* [misc]progress:  [Phase 1 of 3] Setting up.
* * * [misc]progress:  [1/2] Preparing points
* * * [misc]progress:  [2/2] Setting up program.
* [enter]simplify:  Simplifying (- (- (- (- (+ (+ (* (* x1 x4) (- (+ (+ (- x1) x2) x3) x4)) (* x2 (+ (+ (- x1 x2) x3) x4))) (* x3 (+ (- (+ x1 x2) x3) x4))) (* (* x2 x3) x4)) (* x1 x3)) (* x1 x2)) x4)
* * [misc]simplify:  iters left: 6 (28 enodes)
* * [misc]simplify:  iters left: 5 (71 enodes)
* * [misc]simplify:  iters left: 4 (121 enodes)
* * [misc]simplify:  iters left: 3 (215 enodes)
* * [misc]simplify:  iters left: 2 (372 enodes)
* [exit]simplify:  Simplified to (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4)
* [misc]progress:  [Phase 2 of 3] Improving.
* * [misc]progress:  iteration 1 / 3
* * * [misc]progress:  picking best candidate
* * * * [misc]pick:  Picked  #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* * * [misc]progress:  localizing error
* * * [misc]progress:  generating series expansions
* * * * [misc]progress:  [ 1 / 4 ] generating series at (2 1)
* [misc]approximate:  Taking taylor expansion of (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) in x4
* [misc]taylor:  Taking taylor expansion of (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) in x4
* [misc]taylor:  Taking taylor expansion of (+ x2 (+ (- x1) (- x3 x4))) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1) (- x3 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x4 x1) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (* (- (+ x2 x1) (- x3 x4)) x3) in x4
* [misc]taylor:  Taking taylor expansion of (- (+ x2 x1) (- x3 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (+ x2 x1) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)) in x4
* [misc]taylor:  Taking taylor expansion of (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (- x1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* (+ x2 x3) x1) in x4
* [misc]taylor:  Taking taylor expansion of (+ x2 x3) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) in x3
* [misc]taylor:  Taking taylor expansion of (+ x2 (+ (- x1) (- x3 x4))) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1) (- x3 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x4 x1) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (* (- (+ x2 x1) (- x3 x4)) x3) in x3
* [misc]taylor:  Taking taylor expansion of (- (+ x2 x1) (- x3 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (+ x2 x1) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)) in x3
* [misc]taylor:  Taking taylor expansion of (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (- x1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* (+ x2 x3) x1) in x3
* [misc]taylor:  Taking taylor expansion of (+ x2 x3) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) in x1
* [misc]taylor:  Taking taylor expansion of (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (+ x2 (+ (- x1) (- x3 x4))) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1) (- x3 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x4 x1) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* (- (+ x2 x1) (- x3 x4)) x3) in x1
* [misc]taylor:  Taking taylor expansion of (- (+ x2 x1) (- x3 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (+ x2 x1) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)) in x1
* [misc]taylor:  Taking taylor expansion of (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (- x1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* (+ x2 x3) x1) in x1
* [misc]taylor:  Taking taylor expansion of (+ x2 x3) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x2 (+ (- x1) (- x3 x4))) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (- x1) (- x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x4 x1) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (* (- (+ x2 x1) (- x3 x4)) x3) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ x2 x1) (- x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x2 x1) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)) in x2
* [misc]taylor:  Taking taylor expansion of (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (- x1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* (+ x2 x3) x1) in x2
* [misc]taylor:  Taking taylor expansion of (+ x2 x3) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x2 (+ (- x1) (- x3 x4))) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (- x1) (- x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x4 x1) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (* (- (+ x2 x1) (- x3 x4)) x3) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ x2 x1) (- x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x2 x1) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)) in x2
* [misc]taylor:  Taking taylor expansion of (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (- x1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* (+ x2 x3) x1) in x2
* [misc]taylor:  Taking taylor expansion of (+ x2 x3) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ x3 (- x4)) into (- x3 x4)
* [misc]backup-simplify:  Simplify (+ (- x1) (- x3 x4)) into (- x3 (+ x1 x4))
* [misc]backup-simplify:  Simplify (+ 0 (- x3 (+ x1 x4))) into (- x3 (+ x1 x4))
* [misc]backup-simplify:  Simplify (* x4 x1) into (* x1 x4)
* [misc]backup-simplify:  Simplify (* (- x3 (+ x1 x4)) (* x1 x4)) into (* x1 (* x4 (- x3 (+ x1 x4))))
* [misc]backup-simplify:  Simplify (+ 0 x1) into x1
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ x3 (- x4)) into (- x3 x4)
* [misc]backup-simplify:  Simplify (- (- x3 x4)) into (- x4 x3)
* [misc]backup-simplify:  Simplify (+ x1 (- x4 x3)) into (- (+ x1 x4) x3)
* [misc]backup-simplify:  Simplify (* (- (+ x1 x4) x3) x3) into (* x3 (- (+ x1 x4) x3))
* [misc]backup-simplify:  Simplify (+ (* x1 (* x4 (- x3 (+ x1 x4)))) (* x3 (- (+ x1 x4) x3))) into (- (+ (* x1 x3) (+ (* x4 x3) (* x1 (* x4 x3)))) (+ (* x1 (sqr x4)) (+ (* (sqr x1) x4) (sqr x3))))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x1 0) into x1
* [misc]backup-simplify:  Simplify (+ x3 x4) into (+ x4 x3)
* [misc]backup-simplify:  Simplify (* x3 x4) into (* x4 x3)
* [misc]backup-simplify:  Simplify (- (* x4 x3)) into (- (* x4 x3))
* [misc]backup-simplify:  Simplify (+ (+ x4 x3) (- (* x4 x3))) into (- (+ x4 x3) (* x4 x3))
* [misc]backup-simplify:  Simplify (+ x1 (- (+ x4 x3) (* x4 x3))) into (- (+ x1 (+ x4 x3)) (* x4 x3))
* [misc]backup-simplify:  Simplify (* 0 (- (+ x1 (+ x4 x3)) (* x4 x3))) into 0
* [misc]backup-simplify:  Simplify (+ 0 x3) into x3
* [misc]backup-simplify:  Simplify (* x3 x1) into (* x1 x3)
* [misc]backup-simplify:  Simplify (- (* x1 x3)) into (- (* x1 x3))
* [misc]backup-simplify:  Simplify (+ 0 (- (* x1 x3))) into (- (* x1 x3))
* [misc]backup-simplify:  Simplify (+ (- (+ (* x1 x3) (+ (* x4 x3) (* x1 (* x4 x3)))) (+ (* x1 (sqr x4)) (+ (* (sqr x1) x4) (sqr x3)))) (- (* x1 x3))) into (- (+ (* x4 x3) (* x1 (* x4 x3))) (+ (* x1 (sqr x4)) (+ (* (sqr x1) x4) (sqr x3))))
* [misc]taylor:  Taking taylor expansion of (- (+ (* x4 x3) (* x1 (* x4 x3))) (+ (* x1 (sqr x4)) (+ (* (sqr x1) x4) (sqr x3)))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (* x4 x3) (* x1 (* x4 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (* x1 (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (+ (* x1 (sqr x4)) (+ (* (sqr x1) x4) (sqr x3))) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 (sqr x4)) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (+ (* (sqr x1) x4) (sqr x3)) in x1
* [misc]taylor:  Taking taylor expansion of (* (sqr x1) x4) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (* 0 (* x4 x3)) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 x3) 0) into (* x4 x3)
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (* 0 (sqr x4)) into 0
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (* x3 x3) into (sqr x3)
* [misc]backup-simplify:  Simplify (+ 0 (sqr x3)) into (sqr x3)
* [misc]backup-simplify:  Simplify (+ 0 (sqr x3)) into (sqr x3)
* [misc]backup-simplify:  Simplify (- (sqr x3)) into (- (sqr x3))
* [misc]backup-simplify:  Simplify (+ (* x4 x3) (- (sqr x3))) into (- (* x4 x3) (sqr x3))
* [misc]taylor:  Taking taylor expansion of (- (* x4 x3) (sqr x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x1)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ (* (- x3 (+ x1 x4)) 0) (* 1 (* x1 x4))) into (* x1 x4)
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ (* (- (+ x1 x4) x3) 0) (* 1 x3)) into x3
* [misc]backup-simplify:  Simplify (+ (* x1 x4) x3) into (+ (* x1 x4) x3)
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x3 0) (* 0 x4)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (+ (* 0 -1) (* 1 (- (+ x1 (+ x4 x3)) (* x4 x3)))) into (- (+ x1 (+ x4 x3)) (* x4 x3))
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ (* x3 0) (* 1 x1)) into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (+ (- (+ x1 (+ x4 x3)) (* x4 x3)) (- x1)) into (- (+ x4 x3) (* x4 x3))
* [misc]backup-simplify:  Simplify (+ (+ (* x1 x4) x3) (- (+ x4 x3) (* x4 x3))) into (- (+ (* x1 x4) (+ x4 (* 2 x3))) (* x4 x3))
* [misc]taylor:  Taking taylor expansion of (- (+ (* x1 x4) (+ x4 (* 2 x3))) (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (+ (* x1 x4) (+ x4 (* 2 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (+ x4 (* 2 x3)) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* 2 x3) in x1
* [misc]taylor:  Taking taylor expansion of 2 in x1
* [misc]backup-simplify:  Simplify 2 into 2
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (* 2 x3) into (* 2 x3)
* [misc]backup-simplify:  Simplify (+ x4 (* 2 x3)) into (+ x4 (* 2 x3))
* [misc]backup-simplify:  Simplify (+ 0 (+ x4 (* 2 x3))) into (+ x4 (* 2 x3))
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (- (* x4 x3)) into (- (* x4 x3))
* [misc]backup-simplify:  Simplify (+ (+ x4 (* 2 x3)) (- (* x4 x3))) into (- (+ x4 (* 2 x3)) (* x4 x3))
* [misc]taylor:  Taking taylor expansion of (- (+ x4 (* 2 x3)) (* x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (+ x4 (* 2 x3)) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* 2 x3) in x3
* [misc]taylor:  Taking taylor expansion of 2 in x3
* [misc]backup-simplify:  Simplify 2 into 2
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 2 0) into 0
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 (* x4 x3))) into (* x4 x3)
* [misc]backup-simplify:  Simplify (+ 0 (* x4 x3)) into (* x4 x3)
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x4)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 (sqr x4))) into (sqr x4)
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 0 x4)) into 0
* [misc]backup-simplify:  Simplify (+ (* x3 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (sqr x4) 0) into (sqr x4)
* [misc]backup-simplify:  Simplify (- (sqr x4)) into (- (sqr x4))
* [misc]backup-simplify:  Simplify (+ (* x4 x3) (- (sqr x4))) into (- (* x4 x3) (sqr x4))
* [misc]taylor:  Taking taylor expansion of (- (* x4 x3) (sqr x4)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (- (sqr x4)) into (- (sqr x4))
* [misc]backup-simplify:  Simplify (+ 0 (- (sqr x4))) into (- (sqr x4))
* [misc]taylor:  Taking taylor expansion of (- (sqr x4)) in x4
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (* 0 x1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- x3 (+ x1 x4)) 0) (+ (* 1 0) (* 0 (* x1 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (+ x1 x4) x3) 0) (+ (* 1 0) (* 0 x3))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x3 0) (+ (* 0 0) (* 0 x4))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 -1) (* 0 (- (+ x1 (+ x4 x3)) (* x4 x3))))) into (- 1)
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x3 0) (+ (* 1 0) (* 0 x1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (- 1) 0) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]taylor:  Taking taylor expansion of -1 in x1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]taylor:  Taking taylor expansion of -1 in x3
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]taylor:  Taking taylor expansion of -1 in x4
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 x4)) into x4
* [misc]backup-simplify:  Simplify (+ (* 2 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (* 0 x3))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (* 0 x3))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 (* x4 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (* 0 x4))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 (sqr x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 0 0) (* 1 x4))) into x4
* [misc]backup-simplify:  Simplify (+ (* x3 0) (+ (* 0 0) (* 0 x3))) into 0
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]backup-simplify:  Simplify (+ 0 x4) into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ 0 (- x4)) into (- x4)
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 2 1) (* 0 0)) into 2
* [misc]backup-simplify:  Simplify (+ 0 2) into 2
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ 2 (- x4)) into (- 2 x4)
* [misc]taylor:  Taking taylor expansion of (- 2 x4) in x4
* [misc]taylor:  Taking taylor expansion of 2 in x4
* [misc]backup-simplify:  Simplify 2 into 2
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 2 0) into 2
* [misc]backup-simplify:  Simplify 2 into 2
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x4)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 1) (* 0 0))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]taylor:  Taking taylor expansion of -1 in x4
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (+ (* -1 (sqr (* 1 (* x3 (* 1 1))))) (+ (* 2 (* 1 (* x3 (* 1 x2)))) (* -1 (sqr (* 1 (* 1 (* 1 x2))))))) into (- (* 2 (* x2 x3)) (+ (sqr x2) (sqr x3)))
* [misc]approximate:  Taking taylor expansion of (+ (+ (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) (- (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1)))) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (+ (+ (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) (- (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1)))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) in x4
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x4) (/ 1 x1)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x1)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (- (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1))) in x4
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))) in x4
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1) (/ 1 x2)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1)) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (+ (+ (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) (- (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1)))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) in x3
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x4) (/ 1 x1)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x1)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1))) in x3
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1) (/ 1 x2)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1)) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (+ (+ (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) (- (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1)))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x4) (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (- (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1))) in x1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1) (/ 1 x2)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (+ (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) (- (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x4) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (- (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1))) in x2
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1) (/ 1 x2)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (+ (+ (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) (- (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x4) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (- (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1))) in x2
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1) (/ 1 x2)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* 1 -1) into -1
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]taylor:  Taking taylor expansion of -1 in x1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* (/ 1 x4) (/ 1 x1)) into (/ 1 (* x1 x4))
* [misc]backup-simplify:  Simplify (* 1 (/ 1 (* x1 x4))) into (/ 1 (* x1 x4))
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* 1 (/ 1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (+ (/ 1 (* x1 x4)) (/ 1 x3)) into (+ (/ 1 x3) (/ 1 (* x1 x4)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 x1) 0) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (+ (/ 1 x3) (/ 1 x4)) into (+ (/ 1 x3) (/ 1 x4))
* [misc]backup-simplify:  Simplify (* (/ 1 x3) (/ 1 x4)) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (- (/ 1 (* x4 x3))) into (- (/ 1 (* x4 x3)))
* [misc]backup-simplify:  Simplify (+ (+ (/ 1 x3) (/ 1 x4)) (- (/ 1 (* x4 x3)))) into (- (+ (/ 1 x3) (/ 1 x4)) (/ 1 (* x4 x3)))
* [misc]backup-simplify:  Simplify (+ (/ 1 x1) (- (+ (/ 1 x3) (/ 1 x4)) (/ 1 (* x4 x3)))) into (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ 1 (* x4 x3)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ 1 (* x4 x3)))) (* 0 -1)) into (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ 1 (* x4 x3)))
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* 1 (/ 1 x1)) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (- (/ 1 x1)) into (- (/ 1 x1))
* [misc]backup-simplify:  Simplify (+ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ 1 (* x4 x3))) (- (/ 1 x1))) into (- (+ (/ 1 x3) (/ 1 x4)) (/ 1 (* x4 x3)))
* [misc]backup-simplify:  Simplify (+ (+ (/ 1 x3) (/ 1 (* x1 x4))) (- (+ (/ 1 x3) (/ 1 x4)) (/ 1 (* x4 x3)))) into (- (+ (* 2 (/ 1 x3)) (+ (/ 1 (* x1 x4)) (/ 1 x4))) (/ 1 (* x4 x3)))
* [misc]taylor:  Taking taylor expansion of (- (+ (* 2 (/ 1 x3)) (+ (/ 1 (* x1 x4)) (/ 1 x4))) (/ 1 (* x4 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (* 2 (/ 1 x3)) (+ (/ 1 (* x1 x4)) (/ 1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (* 2 (/ 1 x3)) in x1
* [misc]taylor:  Taking taylor expansion of 2 in x1
* [misc]backup-simplify:  Simplify 2 into 2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (* x1 x4)) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 x4)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (/ 1 (* x4 x3)) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x4) 0) (* 0 (/ 1 x1))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 1 x1)) into (- (/ 1 x1))
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ (/ 1 x3) (- (/ 1 x4))) into (- (/ 1 x3) (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) into (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4)))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4)))) into (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4)))
* [misc]backup-simplify:  Simplify (+ (* 1 0) (* (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ 1 (* x1 x4)))) into (- (/ 1 (* x1 (* x4 x3))) (+ (/ 1 (* (sqr x1) x4)) (/ 1 (* x1 (sqr x4)))))
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x1)) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ (/ 1 x3) (- (/ 1 x4))) into (- (/ 1 x3) (/ 1 x4))
* [misc]backup-simplify:  Simplify (- (- (/ 1 x3) (/ 1 x4))) into (- (/ 1 x4) (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ (/ 1 x1) (- (/ 1 x4) (/ 1 x3))) into (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ (* 1 0) (* (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3)) (/ 1 x3))) into (- (+ (/ 1 (* x4 x3)) (/ 1 (* x1 x3))) (/ 1 (sqr x3)))
* [misc]backup-simplify:  Simplify (+ (- (/ 1 (* x1 (* x4 x3))) (+ (/ 1 (* (sqr x1) x4)) (/ 1 (* x1 (sqr x4))))) (- (+ (/ 1 (* x4 x3)) (/ 1 (* x1 x3))) (/ 1 (sqr x3)))) into (- (+ (/ 1 (* x1 (* x4 x3))) (+ (/ 1 (* x4 x3)) (/ 1 (* x1 x3)))) (+ (/ 1 (* (sqr x1) x4)) (+ (/ 1 (sqr x3)) (/ 1 (* x1 (sqr x4))))))
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x3) 0) (* 0 (/ 1 x4))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ 1 (* x4 x3)))) (* 0 -1))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (+ (* 1 0) (* (/ 1 x3) (/ 1 x1))) into (/ 1 (* x1 x3))
* [misc]backup-simplify:  Simplify (- (/ 1 (* x1 x3))) into (- (/ 1 (* x1 x3)))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 (* x1 x3)))) into (- (/ 1 (* x1 x3)))
* [misc]backup-simplify:  Simplify (+ (- (+ (/ 1 (* x1 (* x4 x3))) (+ (/ 1 (* x4 x3)) (/ 1 (* x1 x3)))) (+ (/ 1 (* (sqr x1) x4)) (+ (/ 1 (sqr x3)) (/ 1 (* x1 (sqr x4)))))) (- (/ 1 (* x1 x3)))) into (- (+ (/ 1 (* x1 (* x4 x3))) (/ 1 (* x4 x3))) (+ (/ 1 (* (sqr x1) x4)) (+ (/ 1 (sqr x3)) (/ 1 (* x1 (sqr x4))))))
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (* x1 (* x4 x3))) (/ 1 (* x4 x3))) (+ (/ 1 (* (sqr x1) x4)) (+ (/ 1 (sqr x3)) (/ 1 (* x1 (sqr x4)))))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (* x1 (* x4 x3))) (/ 1 (* x4 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x1 (* x4 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (* 0 (* x4 x3)) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 (* x4 x3))) into (* x4 x3)
* [misc]backup-simplify:  Simplify (/ 1 (* x4 x3)) into (/ 1 (* x4 x3))
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (/ 1 (* x4 x3)) into (/ 1 (* x4 x3))
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (* (sqr x1) x4)) (+ (/ 1 (sqr x3)) (/ 1 (* x1 (sqr x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (* (sqr x1) x4)) in x1
* [misc]taylor:  Taking taylor expansion of (* (sqr x1) x4) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 0 x4)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 0 0) (* 1 x4))) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (sqr x3)) (/ 1 (* x1 (sqr x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (sqr x3)) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x3 x3) into (sqr x3)
* [misc]backup-simplify:  Simplify (/ 1 (sqr x3)) into (/ 1 (sqr x3))
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x1 (sqr x4))) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 (sqr x4)) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (* 0 (sqr x4)) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x4)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 (sqr x4))) into (sqr x4)
* [misc]backup-simplify:  Simplify (/ 1 (sqr x4)) into (/ 1 (sqr x4))
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 x4))) into (- (/ 1 x4))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of -1 in x3
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x4) 0) (+ (* 0 0) (* 0 (/ 1 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) 0) (* 0 (/ 1 (* x1 x4))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3)) 0) (* 0 (/ 1 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x3) 0) (+ (* 0 0) (* 0 (/ 1 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ 1 (* x4 x3)))) (* 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* (/ 1 x3) 0) (* 0 (/ 1 x1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 (* x4 x3)) 0) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 1) (* 0 0)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 0 0) (+ (* 1 0) (* 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 (sqr x4))) into (/ 1 (sqr x4))
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 (sqr x4))) into (/ 1 (sqr x4))
* [misc]backup-simplify:  Simplify (- (/ 1 (sqr x4))) into (- (/ 1 (sqr x4)))
* [misc]backup-simplify:  Simplify (+ (/ 1 (* x4 x3)) (- (/ 1 (sqr x4)))) into (- (/ 1 (* x4 x3)) (/ 1 (sqr x4)))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (* x4 x3)) (/ 1 (sqr x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (sqr x4)) in x3
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (/ 1 (sqr x4)) into (/ 1 (sqr x4))
* [misc]backup-simplify:  Simplify (* 2 (/ 1 x3)) into (/ 2 x3)
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 x4))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ (/ 2 x3) (/ 1 x4)) into (+ (* 2 (/ 1 x3)) (/ 1 x4))
* [misc]backup-simplify:  Simplify (- (/ 1 (* x4 x3))) into (- (/ 1 (* x4 x3)))
* [misc]backup-simplify:  Simplify (+ (+ (* 2 (/ 1 x3)) (/ 1 x4)) (- (/ 1 (* x4 x3)))) into (- (+ (* 2 (/ 1 x3)) (/ 1 x4)) (/ 1 (* x4 x3)))
* [misc]taylor:  Taking taylor expansion of (- (+ (* 2 (/ 1 x3)) (/ 1 x4)) (/ 1 (* x4 x3))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (* 2 (/ 1 x3)) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (* 2 (/ 1 x3)) in x3
* [misc]taylor:  Taking taylor expansion of 2 in x3
* [misc]backup-simplify:  Simplify 2 into 2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x4) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 x1))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) 0) (+ (* 0 0) (* 0 (/ 1 (* x1 x4)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3)) 0) (+ (* 0 0) (* 0 (/ 1 x3))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x3) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ 1 (* x4 x3)))) (* 0 -1))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* (/ 1 x3) 0) (+ (* 0 0) (* 0 (/ 1 x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (* 0 x3))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 (* x4 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 (* x4 x3))) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 1) (* 0 0))))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 x4))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (* 0 x4))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 (sqr x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (sqr x4)) (/ 0 (sqr x4))))) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 (sqr x3)) 0) into (/ 1 (sqr x3))
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 (sqr x3))) into (/ 1 (sqr x3))
* [misc]backup-simplify:  Simplify (- (/ 1 (sqr x3))) into (- (/ 1 (sqr x3)))
* [misc]backup-simplify:  Simplify (+ (/ 1 (* x4 x3)) (- (/ 1 (sqr x3)))) into (- (/ 1 (* x4 x3)) (/ 1 (sqr x3)))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (* x4 x3)) (/ 1 (sqr x3))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (sqr x3)) in x3
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]taylor:  Taking taylor expansion of -1 in x4
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 2 0) (* 0 (/ 1 x3))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (* 2 1) into 2
* [misc]backup-simplify:  Simplify (+ 2 0) into 2
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ 2 (- (/ 1 x4))) into (- 2 (/ 1 x4))
* [misc]taylor:  Taking taylor expansion of (- 2 (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of 2 in x4
* [misc]backup-simplify:  Simplify 2 into 2
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of -1 in x4
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)) (* 0 (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x4) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 x1)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 (* x1 x4))))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)) (* 0 (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3)) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 x3)))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)) (* 0 (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)) (* 0 (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)) (* 0 (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x3) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 x4)))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ 1 (* x4 x3)))) (* 0 -1)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)) (* 0 (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* (/ 1 x3) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 x1)))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (+ (* 0 0) (* 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))) (* 0 (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 1) (* 0 0)))))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 x4)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* x3 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (sqr x3)) (/ 0 (sqr x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (+ (* 0 0) (* 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 (sqr x4))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (sqr x4)) (/ 0 (sqr x4))) (* 0 (/ 0 (sqr x4))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 2 0) (+ (* 0 0) (* 0 (/ 1 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 x4))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (* 0 x3))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))) (* 0 (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 1) (* 0 0)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 1) (* 0 0))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 1 (sqr x4))) into (- (/ 1 (sqr x4)))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 (sqr x4)))) into (- (/ 1 (sqr x4)))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (sqr x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (sqr x4)) in x4
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 2 0) (* 0 1)) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 1) (* 0 0))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (+ (* -1 (* (/ 1 (/ 1 x4)) (* (/ 1 (/ 1 x3)) (* 1 (/ 1 (/ 1 x2)))))) (+ (* 1 (* (/ 1 (/ 1 x4)) (* (/ 1 (/ 1 x3)) (* (/ 1 (/ 1 x1)) 1)))) (* -1 (* (/ 1 (sqr (/ 1 x4))) (* 1 (* (/ 1 (/ 1 x1)) 1)))))) into (- (* x1 (* x4 x3)) (+ (* x1 (sqr x4)) (* x2 (* x4 x3))))
* [misc]approximate:  Taking taylor expansion of (+ (+ (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) (- (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1))))) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (+ (+ (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) (- (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1))))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) in x4
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x4
* [misc]taylor:  Taking taylor expansion of (- x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x4
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x4
* [misc]taylor:  Taking taylor expansion of (- x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x4)) (/ 1 (- x1))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x4
* [misc]taylor:  Taking taylor expansion of (- x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3))) in x4
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x1))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x4
* [misc]taylor:  Taking taylor expansion of (- x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x4
* [misc]taylor:  Taking taylor expansion of (- x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (- (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1)))) in x4
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x4
* [misc]taylor:  Taking taylor expansion of (- x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))) in x4
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1)) (/ 1 (- x2))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x4
* [misc]taylor:  Taking taylor expansion of (- x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x4
* [misc]taylor:  Taking taylor expansion of (- x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x3))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x4
* [misc]taylor:  Taking taylor expansion of (- x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x4
* [misc]taylor:  Taking taylor expansion of (- x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (+ (+ (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) (- (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1))))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) in x3
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x3
* [misc]taylor:  Taking taylor expansion of (- x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x3
* [misc]taylor:  Taking taylor expansion of (- x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x4)) (/ 1 (- x1))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x3
* [misc]taylor:  Taking taylor expansion of (- x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3))) in x3
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x1))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x3
* [misc]taylor:  Taking taylor expansion of (- x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x3
* [misc]taylor:  Taking taylor expansion of (- x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1)))) in x3
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x3
* [misc]taylor:  Taking taylor expansion of (- x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))) in x3
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1)) (/ 1 (- x2))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x3
* [misc]taylor:  Taking taylor expansion of (- x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x3
* [misc]taylor:  Taking taylor expansion of (- x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x3))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x3
* [misc]taylor:  Taking taylor expansion of (- x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x3
* [misc]taylor:  Taking taylor expansion of (- x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (+ (+ (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) (- (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1))))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) in x1
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x4)) (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3))) in x1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (- (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1)))) in x1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1)) (/ 1 (- x2))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x3))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (+ (+ (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) (- (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1))))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x4)) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3))) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (- (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1)) (/ 1 (- x2))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x3))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (+ (+ (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) (- (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1))))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x4)) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3))) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (- (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1)) (/ 1 (- x2))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x3))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]backup-simplify:  Simplify (- -1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* -1 1) into -1
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]taylor:  Taking taylor expansion of -1 in x1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* (/ -1 x4) (/ -1 x1)) into (/ 1 (* x1 x4))
* [misc]backup-simplify:  Simplify (* -1 (/ 1 (* x1 x4))) into (/ -1 (* x1 x4))
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* -1 (/ -1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (+ (/ -1 (* x1 x4)) (/ 1 x3)) into (- (/ 1 x3) (/ 1 (* x1 x4)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (/ -1 x1) 0) into (- (/ 1 x1))
* [misc]backup-simplify:  Simplify (+ (/ -1 x3) (/ -1 x4)) into (- (+ (/ 1 x3) (/ 1 x4)))
* [misc]backup-simplify:  Simplify (* (/ -1 x3) (/ -1 x4)) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (- (/ 1 (* x4 x3))) into (- (/ 1 (* x4 x3)))
* [misc]backup-simplify:  Simplify (+ (- (+ (/ 1 x3) (/ 1 x4))) (- (/ 1 (* x4 x3)))) into (- (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (/ 1 x4))))
* [misc]backup-simplify:  Simplify (+ (- (/ 1 x1)) (- (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (/ 1 x4))))) into (- (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4)))))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 (- (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4)))))) (* 0 1)) into (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4))))
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* -1 (/ -1 x1)) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (- (/ 1 x1)) into (- (/ 1 x1))
* [misc]backup-simplify:  Simplify (+ (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4)))) (- (/ 1 x1))) into (+ (/ 1 x3) (+ (/ 1 x4) (/ 1 (* x4 x3))))
* [misc]backup-simplify:  Simplify (+ (- (/ 1 x3) (/ 1 (* x1 x4))) (+ (/ 1 x3) (+ (/ 1 x4) (/ 1 (* x4 x3))))) into (- (+ (* 2 (/ 1 x3)) (+ (/ 1 (* x4 x3)) (/ 1 x4))) (/ 1 (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of (- (+ (* 2 (/ 1 x3)) (+ (/ 1 (* x4 x3)) (/ 1 x4))) (/ 1 (* x1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (* 2 (/ 1 x3)) (+ (/ 1 (* x4 x3)) (/ 1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (* 2 (/ 1 x3)) in x1
* [misc]taylor:  Taking taylor expansion of 2 in x1
* [misc]backup-simplify:  Simplify 2 into 2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (* x4 x3)) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (/ 1 (* x4 x3)) into (/ 1 (* x4 x3))
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 x4)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x4) 0) (* 0 (/ -1 x1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ -1 x1)) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (- (/ -1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ (/ -1 x3) (/ 1 x4)) into (- (/ 1 x4) (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ (/ 1 x1) (- (/ 1 x4) (/ 1 x3))) into (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ 0 (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3))) into (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ (* -1 0) (* (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3)) (/ 1 (* x1 x4)))) into (- (+ (/ 1 (* (sqr x1) x4)) (/ 1 (* x1 (sqr x4)))) (/ 1 (* x1 (* x4 x3))))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ -1 x1)) into (- (/ 1 x1))
* [misc]backup-simplify:  Simplify (- (/ -1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ (/ -1 x3) (/ 1 x4)) into (- (/ 1 x4) (/ 1 x3))
* [misc]backup-simplify:  Simplify (- (- (/ 1 x4) (/ 1 x3))) into (- (/ 1 x3) (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) into (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4)))
* [misc]backup-simplify:  Simplify (+ (* -1 0) (* (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ -1 x3))) into (- (+ (/ 1 (* x4 x3)) (/ 1 (* x1 x3))) (/ 1 (sqr x3)))
* [misc]backup-simplify:  Simplify (+ (- (+ (/ 1 (* (sqr x1) x4)) (/ 1 (* x1 (sqr x4)))) (/ 1 (* x1 (* x4 x3)))) (- (+ (/ 1 (* x4 x3)) (/ 1 (* x1 x3))) (/ 1 (sqr x3)))) into (- (+ (/ 1 (* (sqr x1) x4)) (+ (/ 1 (* x4 x3)) (+ (/ 1 (* x1 x3)) (/ 1 (* x1 (sqr x4)))))) (+ (/ 1 (sqr x3)) (/ 1 (* x1 (* x4 x3)))))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x3) 0) (* 0 (/ -1 x4))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 (- (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4)))))) (* 0 1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ -1 x3)) into (- (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ (* -1 0) (* (- (/ 1 x3)) (/ -1 x1))) into (/ 1 (* x1 x3))
* [misc]backup-simplify:  Simplify (- (/ 1 (* x1 x3))) into (- (/ 1 (* x1 x3)))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 (* x1 x3)))) into (- (/ 1 (* x1 x3)))
* [misc]backup-simplify:  Simplify (+ (- (+ (/ 1 (* (sqr x1) x4)) (+ (/ 1 (* x4 x3)) (+ (/ 1 (* x1 x3)) (/ 1 (* x1 (sqr x4)))))) (+ (/ 1 (sqr x3)) (/ 1 (* x1 (* x4 x3))))) (- (/ 1 (* x1 x3)))) into (- (+ (/ 1 (* (sqr x1) x4)) (+ (/ 1 (* x4 x3)) (/ 1 (* x1 (sqr x4))))) (+ (/ 1 (sqr x3)) (/ 1 (* x1 (* x4 x3)))))
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (* (sqr x1) x4)) (+ (/ 1 (* x4 x3)) (/ 1 (* x1 (sqr x4))))) (+ (/ 1 (sqr x3)) (/ 1 (* x1 (* x4 x3))))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (* (sqr x1) x4)) (+ (/ 1 (* x4 x3)) (/ 1 (* x1 (sqr x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (* (sqr x1) x4)) in x1
* [misc]taylor:  Taking taylor expansion of (* (sqr x1) x4) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 0 x4)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 0 0) (* 1 x4))) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (* x4 x3)) (/ 1 (* x1 (sqr x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (/ 1 (* x4 x3)) into (/ 1 (* x4 x3))
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x1 (sqr x4))) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 (sqr x4)) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (* 0 (sqr x4)) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x4)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 (sqr x4))) into (sqr x4)
* [misc]backup-simplify:  Simplify (/ 1 (sqr x4)) into (/ 1 (sqr x4))
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (sqr x3)) (/ 1 (* x1 (* x4 x3)))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (sqr x3)) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x3 x3) into (sqr x3)
* [misc]backup-simplify:  Simplify (/ 1 (sqr x3)) into (/ 1 (sqr x3))
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x1 (* x4 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (* 0 (* x4 x3)) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 (* x4 x3))) into (* x4 x3)
* [misc]backup-simplify:  Simplify (/ 1 (* x4 x3)) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 x4))) into (- (/ 1 x4))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of -1 in x3
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x4) 0) (+ (* 0 0) (* 0 (/ -1 x1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3)) 0) (* 0 (/ 1 (* x1 x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) 0) (* 0 (/ -1 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x3) 0) (+ (* 0 0) (* 0 (/ -1 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 0) (+ (* 0 (- (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4)))))) (* 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* (- (/ 1 x3)) 0) (* 0 (/ -1 x1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 1) (* 0 0)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 0 0) (+ (* 1 0) (* 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 (sqr x4))) into (/ 1 (sqr x4))
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 (sqr x4))) into (/ 1 (sqr x4))
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 (* x4 x3))) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (- (/ 1 (* x4 x3))) into (- (/ 1 (* x4 x3)))
* [misc]backup-simplify:  Simplify (+ (/ 1 (sqr x4)) (- (/ 1 (* x4 x3)))) into (- (/ 1 (sqr x4)) (/ 1 (* x4 x3)))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (sqr x4)) (/ 1 (* x4 x3))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (sqr x4)) in x3
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (/ 1 (sqr x4)) into (/ 1 (sqr x4))
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (* 2 (/ 1 x3)) into (/ 2 x3)
* [misc]backup-simplify:  Simplify (+ (/ 1 (* x4 x3)) (/ 1 x4)) into (+ (/ 1 x4) (/ 1 (* x4 x3)))
* [misc]backup-simplify:  Simplify (+ (/ 2 x3) (+ (/ 1 x4) (/ 1 (* x4 x3)))) into (+ (* 2 (/ 1 x3)) (+ (/ 1 x4) (/ 1 (* x4 x3))))
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 x4))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (+ (* 2 (/ 1 x3)) (+ (/ 1 x4) (/ 1 (* x4 x3)))) 0) into (+ (* 2 (/ 1 x3)) (+ (/ 1 (* x4 x3)) (/ 1 x4)))
* [misc]taylor:  Taking taylor expansion of (+ (* 2 (/ 1 x3)) (+ (/ 1 (* x4 x3)) (/ 1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (* 2 (/ 1 x3)) in x3
* [misc]taylor:  Taking taylor expansion of 2 in x3
* [misc]backup-simplify:  Simplify 2 into 2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (* x4 x3)) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x4) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ -1 x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3)) 0) (+ (* 0 0) (* 0 (/ 1 (* x1 x4)))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) 0) (+ (* 0 0) (* 0 (/ -1 x3))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x3) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ -1 x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 (- (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4)))))) (* 0 1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* (- (/ 1 x3)) 0) (+ (* 0 0) (* 0 (/ -1 x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 1) (* 0 0))))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 x4))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (* 0 x4))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 (sqr x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (sqr x4)) (/ 0 (sqr x4))))) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 (* x4 x3)) 0) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 (* x4 x3))) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (* 0 x3))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 (* x4 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 (sqr x3)) 0) into (/ 1 (sqr x3))
* [misc]backup-simplify:  Simplify (- (/ 1 (sqr x3))) into (- (/ 1 (sqr x3)))
* [misc]backup-simplify:  Simplify (+ (/ 1 (* x4 x3)) (- (/ 1 (sqr x3)))) into (- (/ 1 (* x4 x3)) (/ 1 (sqr x3)))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (* x4 x3)) (/ 1 (sqr x3))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (sqr x3)) in x3
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]taylor:  Taking taylor expansion of -1 in x4
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 2 0) (* 0 (/ 1 x3))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 x4))) into (- (/ 1 x4))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (* 2 1) into 2
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ 2 (/ 1 x4)) into (+ 2 (/ 1 x4))
* [misc]taylor:  Taking taylor expansion of (+ 2 (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of 2 in x4
* [misc]backup-simplify:  Simplify 2 into 2
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of -1 in x4
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))) (* 0 (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))) (* 0 (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x4) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ -1 x1)))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3)) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 (* x1 x4))))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))) (* 0 (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ -1 x3)))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))) (* 0 (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))) (* 0 (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))) (* 0 (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))) (* 0 (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))) (* 0 (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x3) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ -1 x4)))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 (- (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4)))))) (* 0 1)))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))) (* 0 (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* (- (/ 1 x3)) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ -1 x1)))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 1) (* 0 0)))))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 x4)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (+ (* 0 0) (* 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 (sqr x4))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (sqr x4)) (/ 0 (sqr x4))) (* 0 (/ 0 (sqr x4))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x3 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (sqr x3)) (/ 0 (sqr x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (+ (* 0 0) (* 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))) (* 0 (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 2 0) (+ (* 0 0) (* 0 (/ 1 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (* 0 x3))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))) (* 0 (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 x4))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 1) (* 0 0)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 1) (* 0 0))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 (sqr x4)) 0) into (/ 1 (sqr x4))
* [misc]taylor:  Taking taylor expansion of (/ 1 (sqr x4)) in x4
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 2 0) (* 0 1)) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 1) (* 0 0))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x4)) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ (* 1 (* (/ 1 (/ 1 (- x4))) (* (/ 1 (/ 1 (- x3))) (* 1 (/ 1 (/ 1 (- x2))))))) (+ (* -1 (* (/ 1 (/ 1 (- x4))) (* (/ 1 (/ 1 (- x3))) (* (/ 1 (/ 1 (- x1))) 1)))) (* 1 (* (/ 1 (sqr (/ 1 (- x4)))) (* 1 (* (/ 1 (/ 1 (- x1))) 1)))))) into (- (* x1 (* x4 x3)) (+ (* x1 (sqr x4)) (* x2 (* x4 x3))))
* * * * [misc]progress:  [ 2 / 4 ] generating series at (2 1 1)
* [misc]approximate:  Taking taylor expansion of (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) in x4
* [misc]taylor:  Taking taylor expansion of (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) in x4
* [misc]taylor:  Taking taylor expansion of (+ x2 (+ (- x1) (- x3 x4))) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1) (- x3 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x4 x1) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (* (- (+ x2 x1) (- x3 x4)) x3) in x4
* [misc]taylor:  Taking taylor expansion of (- (+ x2 x1) (- x3 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (+ x2 x1) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) in x3
* [misc]taylor:  Taking taylor expansion of (+ x2 (+ (- x1) (- x3 x4))) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1) (- x3 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x4 x1) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (* (- (+ x2 x1) (- x3 x4)) x3) in x3
* [misc]taylor:  Taking taylor expansion of (- (+ x2 x1) (- x3 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (+ x2 x1) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) in x1
* [misc]taylor:  Taking taylor expansion of (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (+ x2 (+ (- x1) (- x3 x4))) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1) (- x3 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x4 x1) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* (- (+ x2 x1) (- x3 x4)) x3) in x1
* [misc]taylor:  Taking taylor expansion of (- (+ x2 x1) (- x3 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (+ x2 x1) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x2 (+ (- x1) (- x3 x4))) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (- x1) (- x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x4 x1) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (* (- (+ x2 x1) (- x3 x4)) x3) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ x2 x1) (- x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x2 x1) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x2 (+ (- x1) (- x3 x4))) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (- x1) (- x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x4 x1) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (* (- (+ x2 x1) (- x3 x4)) x3) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ x2 x1) (- x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x2 x1) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ x3 (- x4)) into (- x3 x4)
* [misc]backup-simplify:  Simplify (+ (- x1) (- x3 x4)) into (- x3 (+ x1 x4))
* [misc]backup-simplify:  Simplify (+ 0 (- x3 (+ x1 x4))) into (- x3 (+ x1 x4))
* [misc]backup-simplify:  Simplify (* x4 x1) into (* x1 x4)
* [misc]backup-simplify:  Simplify (* (- x3 (+ x1 x4)) (* x1 x4)) into (* x1 (* x4 (- x3 (+ x1 x4))))
* [misc]backup-simplify:  Simplify (+ 0 x1) into x1
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ x3 (- x4)) into (- x3 x4)
* [misc]backup-simplify:  Simplify (- (- x3 x4)) into (- x4 x3)
* [misc]backup-simplify:  Simplify (+ x1 (- x4 x3)) into (- (+ x1 x4) x3)
* [misc]backup-simplify:  Simplify (* (- (+ x1 x4) x3) x3) into (* x3 (- (+ x1 x4) x3))
* [misc]backup-simplify:  Simplify (+ (* x1 (* x4 (- x3 (+ x1 x4)))) (* x3 (- (+ x1 x4) x3))) into (- (+ (* x1 x3) (+ (* x4 x3) (* x1 (* x4 x3)))) (+ (* x1 (sqr x4)) (+ (* (sqr x1) x4) (sqr x3))))
* [misc]taylor:  Taking taylor expansion of (- (+ (* x1 x3) (+ (* x4 x3) (* x1 (* x4 x3)))) (+ (* x1 (sqr x4)) (+ (* (sqr x1) x4) (sqr x3)))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (* x1 x3) (+ (* x4 x3) (* x1 (* x4 x3)))) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (+ (* x4 x3) (* x1 (* x4 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (* x1 (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (+ (* x1 (sqr x4)) (+ (* (sqr x1) x4) (sqr x3))) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 (sqr x4)) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (+ (* (sqr x1) x4) (sqr x3)) in x1
* [misc]taylor:  Taking taylor expansion of (* (sqr x1) x4) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* 0 x3) into 0
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (* 0 (* x4 x3)) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 x3) 0) into (* x4 x3)
* [misc]backup-simplify:  Simplify (+ 0 (* x4 x3)) into (* x4 x3)
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (* 0 (sqr x4)) into 0
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (* x3 x3) into (sqr x3)
* [misc]backup-simplify:  Simplify (+ 0 (sqr x3)) into (sqr x3)
* [misc]backup-simplify:  Simplify (+ 0 (sqr x3)) into (sqr x3)
* [misc]backup-simplify:  Simplify (- (sqr x3)) into (- (sqr x3))
* [misc]backup-simplify:  Simplify (+ (* x4 x3) (- (sqr x3))) into (- (* x4 x3) (sqr x3))
* [misc]taylor:  Taking taylor expansion of (- (* x4 x3) (sqr x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x1)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ (* (- x3 (+ x1 x4)) 0) (* 1 (* x1 x4))) into (* x1 x4)
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ (* (- (+ x1 x4) x3) 0) (* 1 x3)) into x3
* [misc]backup-simplify:  Simplify (+ (* x1 x4) x3) into (+ (* x1 x4) x3)
* [misc]taylor:  Taking taylor expansion of (+ (* x1 x4) x3) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (+ 0 x3) into x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 x3)) into x3
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 (* x4 x3))) into (* x4 x3)
* [misc]backup-simplify:  Simplify (+ 0 (* x4 x3)) into (* x4 x3)
* [misc]backup-simplify:  Simplify (+ x3 (* x4 x3)) into (+ (* x4 x3) x3)
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x4)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 (sqr x4))) into (sqr x4)
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 0 x4)) into 0
* [misc]backup-simplify:  Simplify (+ (* x3 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (sqr x4) 0) into (sqr x4)
* [misc]backup-simplify:  Simplify (- (sqr x4)) into (- (sqr x4))
* [misc]backup-simplify:  Simplify (+ (+ (* x4 x3) x3) (- (sqr x4))) into (- (+ (* x4 x3) x3) (sqr x4))
* [misc]taylor:  Taking taylor expansion of (- (+ (* x4 x3) x3) (sqr x4)) in x3
* [misc]taylor:  Taking taylor expansion of (+ (* x4 x3) x3) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (- (sqr x4)) into (- (sqr x4))
* [misc]backup-simplify:  Simplify (+ 0 (- (sqr x4))) into (- (sqr x4))
* [misc]taylor:  Taking taylor expansion of (- (sqr x4)) in x4
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (* 0 x1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- x3 (+ x1 x4)) 0) (+ (* 1 0) (* 0 (* x1 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (+ x1 x4) x3) 0) (+ (* 1 0) (* 0 x3))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]approximate:  Taking taylor expansion of (+ (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) in x4
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x4) (/ 1 x1)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x1)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) in x3
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x4) (/ 1 x1)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x1)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x4) (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x4) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x4) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* (/ 1 x4) (/ 1 x1)) into (/ 1 (* x1 x4))
* [misc]backup-simplify:  Simplify (* 1 (/ 1 (* x1 x4))) into (/ 1 (* x1 x4))
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* 1 (/ 1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (+ (/ 1 (* x1 x4)) (/ 1 x3)) into (+ (/ 1 x3) (/ 1 (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 (* x1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 x4)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x4) 0) (* 0 (/ 1 x1))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 1 x1)) into (- (/ 1 x1))
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ (/ 1 x3) (- (/ 1 x4))) into (- (/ 1 x3) (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) into (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4)))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4)))) into (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4)))
* [misc]backup-simplify:  Simplify (+ (* 1 0) (* (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ 1 (* x1 x4)))) into (- (/ 1 (* x1 (* x4 x3))) (+ (/ 1 (* (sqr x1) x4)) (/ 1 (* x1 (sqr x4)))))
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x1)) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ (/ 1 x3) (- (/ 1 x4))) into (- (/ 1 x3) (/ 1 x4))
* [misc]backup-simplify:  Simplify (- (- (/ 1 x3) (/ 1 x4))) into (- (/ 1 x4) (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ (/ 1 x1) (- (/ 1 x4) (/ 1 x3))) into (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ (* 1 0) (* (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3)) (/ 1 x3))) into (- (+ (/ 1 (* x4 x3)) (/ 1 (* x1 x3))) (/ 1 (sqr x3)))
* [misc]backup-simplify:  Simplify (+ (- (/ 1 (* x1 (* x4 x3))) (+ (/ 1 (* (sqr x1) x4)) (/ 1 (* x1 (sqr x4))))) (- (+ (/ 1 (* x4 x3)) (/ 1 (* x1 x3))) (/ 1 (sqr x3)))) into (- (+ (/ 1 (* x1 (* x4 x3))) (+ (/ 1 (* x4 x3)) (/ 1 (* x1 x3)))) (+ (/ 1 (* (sqr x1) x4)) (+ (/ 1 (sqr x3)) (/ 1 (* x1 (sqr x4))))))
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (* x1 (* x4 x3))) (+ (/ 1 (* x4 x3)) (/ 1 (* x1 x3)))) (+ (/ 1 (* (sqr x1) x4)) (+ (/ 1 (sqr x3)) (/ 1 (* x1 (sqr x4)))))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (* x1 (* x4 x3))) (+ (/ 1 (* x4 x3)) (/ 1 (* x1 x3)))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x1 (* x4 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (* 0 (* x4 x3)) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 (* x4 x3))) into (* x4 x3)
* [misc]backup-simplify:  Simplify (/ 1 (* x4 x3)) into (/ 1 (* x4 x3))
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (* x4 x3)) (/ 1 (* x1 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (/ 1 (* x4 x3)) into (/ 1 (* x4 x3))
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x1 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* 0 x3) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 x3)) into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (* (sqr x1) x4)) (+ (/ 1 (sqr x3)) (/ 1 (* x1 (sqr x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (* (sqr x1) x4)) in x1
* [misc]taylor:  Taking taylor expansion of (* (sqr x1) x4) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 0 x4)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 0 0) (* 1 x4))) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (sqr x3)) (/ 1 (* x1 (sqr x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (sqr x3)) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x3 x3) into (sqr x3)
* [misc]backup-simplify:  Simplify (/ 1 (sqr x3)) into (/ 1 (sqr x3))
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x1 (sqr x4))) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 (sqr x4)) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (* 0 (sqr x4)) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x4)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 (sqr x4))) into (sqr x4)
* [misc]backup-simplify:  Simplify (/ 1 (sqr x4)) into (/ 1 (sqr x4))
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 x4))) into (- (/ 1 x4))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x4)) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x4) 0) (+ (* 0 0) (* 0 (/ 1 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) 0) (* 0 (/ 1 (* x1 x4))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3)) 0) (* 0 (/ 1 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (+ (/ 1 (* x4 x3)) (/ 1 x3)) into (+ (/ 1 x3) (/ 1 (* x4 x3)))
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 1) (* 0 0)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 0 0) (+ (* 1 0) (* 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 (sqr x4))) into (/ 1 (sqr x4))
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 (sqr x4))) into (/ 1 (sqr x4))
* [misc]backup-simplify:  Simplify (- (/ 1 (sqr x4))) into (- (/ 1 (sqr x4)))
* [misc]backup-simplify:  Simplify (+ (+ (/ 1 x3) (/ 1 (* x4 x3))) (- (/ 1 (sqr x4)))) into (- (+ (/ 1 x3) (/ 1 (* x4 x3))) (/ 1 (sqr x4)))
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 (* x4 x3))) (/ 1 (sqr x4))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 (* x4 x3))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (sqr x4)) in x3
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (/ 1 (sqr x4)) into (/ 1 (sqr x4))
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 x4))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 x3) 0) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x4) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 x1))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) 0) (+ (* 0 0) (* 0 (/ 1 (* x1 x4)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3)) 0) (+ (* 0 0) (* 0 (/ 1 x3))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (* 0 x3))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 (* x4 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 x3))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 (* x4 x3)) 0) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 (* x4 x3))) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 1) (* 0 0))))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 x4))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (* 0 x4))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 (sqr x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (sqr x4)) (/ 0 (sqr x4))))) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 (sqr x3)) 0) into (/ 1 (sqr x3))
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 (sqr x3))) into (/ 1 (sqr x3))
* [misc]backup-simplify:  Simplify (- (/ 1 (sqr x3))) into (- (/ 1 (sqr x3)))
* [misc]backup-simplify:  Simplify (+ (/ 1 (* x4 x3)) (- (/ 1 (sqr x3)))) into (- (/ 1 (* x4 x3)) (/ 1 (sqr x3)))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (* x4 x3)) (/ 1 (sqr x3))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (sqr x3)) in x3
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]taylor:  Taking taylor expansion of -1 in x4
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ 1 (/ 1 x4)) into (+ 1 (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ (+ 1 (/ 1 x4)) 0) into (+ 1 (/ 1 x4))
* [misc]taylor:  Taking taylor expansion of (+ 1 (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)) (* 0 (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x4) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 x1)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 (* x1 x4))))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)) (* 0 (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3)) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 x3)))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (+ (* 0 0) (* 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))) (* 0 (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 1) (* 0 0)))))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 x4)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* x3 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (sqr x3)) (/ 0 (sqr x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (+ (* 0 0) (* 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 (sqr x4))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (sqr x4)) (/ 0 (sqr x4))) (* 0 (/ 0 (sqr x4))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 x4))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 1) (* 0 0)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 1) (* 0 0))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (/ 1 (sqr x4))) into (- (/ 1 (sqr x4)))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 (sqr x4)))) into (- (/ 1 (sqr x4)))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (sqr x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (sqr x4)) in x4
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (+ (* -1 (* (/ 1 (/ 1 x4)) (* 1 (* (/ 1 (sqr (/ 1 x1))) 1)))) (+ (* 1 (* (/ 1 (/ 1 x4)) (* (/ 1 (/ 1 x3)) (* (/ 1 (/ 1 x1)) 1)))) (* -1 (* (/ 1 (sqr (/ 1 x4))) (* 1 (* (/ 1 (/ 1 x1)) 1)))))) into (- (* x1 (* x4 x3)) (+ (* x1 (sqr x4)) (* (sqr x1) x4)))
* [misc]approximate:  Taking taylor expansion of (+ (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) in x4
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x4
* [misc]taylor:  Taking taylor expansion of (- x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x4
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x4
* [misc]taylor:  Taking taylor expansion of (- x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x4)) (/ 1 (- x1))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x4
* [misc]taylor:  Taking taylor expansion of (- x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3))) in x4
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x1))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x4
* [misc]taylor:  Taking taylor expansion of (- x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x4
* [misc]taylor:  Taking taylor expansion of (- x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) in x3
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x3
* [misc]taylor:  Taking taylor expansion of (- x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x3
* [misc]taylor:  Taking taylor expansion of (- x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x4)) (/ 1 (- x1))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x3
* [misc]taylor:  Taking taylor expansion of (- x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3))) in x3
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x1))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x3
* [misc]taylor:  Taking taylor expansion of (- x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x3
* [misc]taylor:  Taking taylor expansion of (- x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) in x1
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x4)) (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3))) in x1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x4)) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3))) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x4)) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3))) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* (/ -1 x4) (/ -1 x1)) into (/ 1 (* x1 x4))
* [misc]backup-simplify:  Simplify (* -1 (/ 1 (* x1 x4))) into (/ -1 (* x1 x4))
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* -1 (/ -1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (+ (/ -1 (* x1 x4)) (/ 1 x3)) into (- (/ 1 x3) (/ 1 (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 (* x1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 x4)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x4) 0) (* 0 (/ -1 x1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ -1 x1)) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (- (/ -1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ (/ -1 x3) (/ 1 x4)) into (- (/ 1 x4) (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ (/ 1 x1) (- (/ 1 x4) (/ 1 x3))) into (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ 0 (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3))) into (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ (* -1 0) (* (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3)) (/ 1 (* x1 x4)))) into (- (+ (/ 1 (* (sqr x1) x4)) (/ 1 (* x1 (sqr x4)))) (/ 1 (* x1 (* x4 x3))))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ -1 x1)) into (- (/ 1 x1))
* [misc]backup-simplify:  Simplify (- (/ -1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ (/ -1 x3) (/ 1 x4)) into (- (/ 1 x4) (/ 1 x3))
* [misc]backup-simplify:  Simplify (- (- (/ 1 x4) (/ 1 x3))) into (- (/ 1 x3) (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) into (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4)))
* [misc]backup-simplify:  Simplify (+ (* -1 0) (* (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ -1 x3))) into (- (+ (/ 1 (* x4 x3)) (/ 1 (* x1 x3))) (/ 1 (sqr x3)))
* [misc]backup-simplify:  Simplify (+ (- (+ (/ 1 (* (sqr x1) x4)) (/ 1 (* x1 (sqr x4)))) (/ 1 (* x1 (* x4 x3)))) (- (+ (/ 1 (* x4 x3)) (/ 1 (* x1 x3))) (/ 1 (sqr x3)))) into (- (+ (/ 1 (* (sqr x1) x4)) (+ (/ 1 (* x4 x3)) (+ (/ 1 (* x1 x3)) (/ 1 (* x1 (sqr x4)))))) (+ (/ 1 (sqr x3)) (/ 1 (* x1 (* x4 x3)))))
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (* (sqr x1) x4)) (+ (/ 1 (* x4 x3)) (+ (/ 1 (* x1 x3)) (/ 1 (* x1 (sqr x4)))))) (+ (/ 1 (sqr x3)) (/ 1 (* x1 (* x4 x3))))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (* (sqr x1) x4)) (+ (/ 1 (* x4 x3)) (+ (/ 1 (* x1 x3)) (/ 1 (* x1 (sqr x4)))))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (* (sqr x1) x4)) in x1
* [misc]taylor:  Taking taylor expansion of (* (sqr x1) x4) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 0 x4)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 0 0) (* 1 x4))) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (* x4 x3)) (+ (/ 1 (* x1 x3)) (/ 1 (* x1 (sqr x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (/ 1 (* x4 x3)) into (/ 1 (* x4 x3))
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (* x1 x3)) (/ 1 (* x1 (sqr x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x1 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* 0 x3) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 x3)) into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x1 (sqr x4))) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 (sqr x4)) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (* 0 (sqr x4)) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x4)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 (sqr x4))) into (sqr x4)
* [misc]backup-simplify:  Simplify (/ 1 (sqr x4)) into (/ 1 (sqr x4))
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (sqr x3)) (/ 1 (* x1 (* x4 x3)))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (sqr x3)) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x3 x3) into (sqr x3)
* [misc]backup-simplify:  Simplify (/ 1 (sqr x3)) into (/ 1 (sqr x3))
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x1 (* x4 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (* 0 (* x4 x3)) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 (* x4 x3))) into (* x4 x3)
* [misc]backup-simplify:  Simplify (/ 1 (* x4 x3)) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 x4))) into (- (/ 1 x4))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x4) 0) (+ (* 0 0) (* 0 (/ -1 x1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3)) 0) (* 0 (/ 1 (* x1 x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) 0) (* 0 (/ -1 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 1) (* 0 0)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 0 0) (+ (* 1 0) (* 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 x3) (/ 1 (sqr x4))) into (+ (/ 1 (sqr x4)) (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ 0 (+ (/ 1 (sqr x4)) (/ 1 x3))) into (+ (/ 1 (sqr x4)) (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ 0 (+ (/ 1 (sqr x4)) (/ 1 x3))) into (+ (/ 1 (sqr x4)) (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 (* x4 x3))) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (- (/ 1 (* x4 x3))) into (- (/ 1 (* x4 x3)))
* [misc]backup-simplify:  Simplify (+ (+ (/ 1 (sqr x4)) (/ 1 x3)) (- (/ 1 (* x4 x3)))) into (- (+ (/ 1 (sqr x4)) (/ 1 x3)) (/ 1 (* x4 x3)))
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (sqr x4)) (/ 1 x3)) (/ 1 (* x4 x3))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (sqr x4)) (/ 1 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (sqr x4)) in x3
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (/ 1 (sqr x4)) into (/ 1 (sqr x4))
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 x4))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 x3) 0) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x4) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ -1 x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3)) 0) (+ (* 0 0) (* 0 (/ 1 (* x1 x4)))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) 0) (+ (* 0 0) (* 0 (/ -1 x3))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 1) (* 0 0))))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 x4))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 x3))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (* 0 x4))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 (sqr x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (sqr x4)) (/ 0 (sqr x4))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 (* x4 x3)) 0) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 (* x4 x3))) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (* 0 x3))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 (* x4 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 (sqr x3)) 0) into (/ 1 (sqr x3))
* [misc]backup-simplify:  Simplify (- (/ 1 (sqr x3))) into (- (/ 1 (sqr x3)))
* [misc]backup-simplify:  Simplify (+ (/ 1 (* x4 x3)) (- (/ 1 (sqr x3)))) into (- (/ 1 (* x4 x3)) (/ 1 (sqr x3)))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (* x4 x3)) (/ 1 (sqr x3))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (sqr x3)) in x3
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]taylor:  Taking taylor expansion of -1 in x4
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ 1 (- (/ 1 x4))) into (- 1 (/ 1 x4))
* [misc]taylor:  Taking taylor expansion of (- 1 (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))) (* 0 (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))) (* 0 (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x4) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ -1 x1)))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* (- (+ (/ 1 x1) (/ 1 x4)) (/ 1 x3)) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 (* x1 x4))))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))) (* 0 (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* (- (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ -1 x3)))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 1) (* 0 0)))))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 x4)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (+ (* 0 0) (* 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 (sqr x4))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (sqr x4)) (/ 0 (sqr x4))) (* 0 (/ 0 (sqr x4))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x3 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (sqr x3)) (/ 0 (sqr x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (+ (* 0 0) (* 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))) (* 0 (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 x4))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 1) (* 0 0)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 (sqr x4)) 0) into (/ 1 (sqr x4))
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 1) (* 0 0))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 (sqr x4)) 0) into (/ 1 (sqr x4))
* [misc]taylor:  Taking taylor expansion of (/ 1 (sqr x4)) in x4
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ (* 1 (* (/ 1 (/ 1 (- x4))) (* 1 (* (/ 1 (sqr (/ 1 (- x1)))) 1)))) (+ (* -1 (* (/ 1 (/ 1 (- x4))) (* (/ 1 (/ 1 (- x3))) (* (/ 1 (/ 1 (- x1))) 1)))) (* 1 (* (/ 1 (sqr (/ 1 (- x4)))) (* 1 (* (/ 1 (/ 1 (- x1))) 1)))))) into (- (* x1 (* x4 x3)) (+ (* x1 (sqr x4)) (* (sqr x1) x4)))
* * * * [misc]progress:  [ 3 / 4 ] generating series at (2 1 2 1 2 2)
* [misc]approximate:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in (x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (+ 0 x4) into x4
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 x4)) into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ 1 (- x4)) into (- 1 x4)
* [misc]taylor:  Taking taylor expansion of (- 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 x4))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (+ (* -1 (* x4 x3)) (+ (* 1 (* x4 1)) (* 1 (* 1 x3)))) into (- (+ x4 x3) (* x4 x3))
* [misc]approximate:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in (x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* 1 (/ 1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ 1 (- (/ 1 x4))) into (- 1 (/ 1 x4))
* [misc]taylor:  Taking taylor expansion of (- 1 (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (* 0 (/ 1 x4))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ (* 1 (* 1 (/ 1 (/ 1 x3)))) (+ (* 1 (* (/ 1 (/ 1 x4)) 1)) (* -1 (* (/ 1 (/ 1 x4)) (/ 1 (/ 1 x3)))))) into (- (+ x4 x3) (* x4 x3))
* [misc]approximate:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in (x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* -1 (/ -1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ -1 (- (/ 1 x4))) into (- (+ 1 (/ 1 x4)))
* [misc]taylor:  Taking taylor expansion of (- (+ 1 (/ 1 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (+ 1 (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ -1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (* 0 (/ -1 x4))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (- (/ 1 x4)) 0) into (- (/ 1 x4))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (+ (* -1 (* 1 (/ 1 (/ 1 (- x3))))) (+ (* -1 (* (/ 1 (/ 1 (- x4))) 1)) (* -1 (* (/ 1 (/ 1 (- x4))) (/ 1 (/ 1 (- x3))))))) into (- (+ x4 x3) (* x4 x3))
* * * * [misc]progress:  [ 4 / 4 ] generating series at (2 1 2 1)
* [misc]approximate:  Taking taylor expansion of (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (- x1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (- x1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (- x1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (- x1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (- x1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x1 0) into x1
* [misc]backup-simplify:  Simplify (+ x3 x4) into (+ x4 x3)
* [misc]backup-simplify:  Simplify (* x3 x4) into (* x4 x3)
* [misc]backup-simplify:  Simplify (- (* x4 x3)) into (- (* x4 x3))
* [misc]backup-simplify:  Simplify (+ (+ x4 x3) (- (* x4 x3))) into (- (+ x4 x3) (* x4 x3))
* [misc]backup-simplify:  Simplify (+ x1 (- (+ x4 x3) (* x4 x3))) into (- (+ x1 (+ x4 x3)) (* x4 x3))
* [misc]backup-simplify:  Simplify (* 0 (- (+ x1 (+ x4 x3)) (* x4 x3))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x3 0) (* 0 x4)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (+ (* 0 -1) (* 1 (- (+ x1 (+ x4 x3)) (* x4 x3)))) into (- (+ x1 (+ x4 x3)) (* x4 x3))
* [misc]taylor:  Taking taylor expansion of (- (+ x1 (+ x4 x3)) (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (+ x1 (+ x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (+ x4 x3) into (+ x4 x3)
* [misc]backup-simplify:  Simplify (+ 0 (+ x4 x3)) into (+ x4 x3)
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (- (* x4 x3)) into (- (* x4 x3))
* [misc]backup-simplify:  Simplify (+ (+ x4 x3) (- (* x4 x3))) into (- (+ x4 x3) (* x4 x3))
* [misc]taylor:  Taking taylor expansion of (- (+ x4 x3) (* x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (+ x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x3 0) (+ (* 0 0) (* 0 x4))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 -1) (* 0 (- (+ x1 (+ x4 x3)) (* x4 x3))))) into (- 1)
* [misc]taylor:  Taking taylor expansion of (- 1) in x1
* [misc]taylor:  Taking taylor expansion of 1 in x1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]taylor:  Taking taylor expansion of -1 in x3
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]taylor:  Taking taylor expansion of -1 in x4
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x3
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ 1 (- x4)) into (- 1 x4)
* [misc]taylor:  Taking taylor expansion of (- 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ (* 1 (* 1 (* x3 (* 1 x2)))) (+ (* 1 (* 1 (* 1 (* x1 x2)))) (* -1 (sqr (* 1 (* 1 (* 1 x2))))))) into (- (+ (* x1 x2) (* x2 x3)) (sqr x2))
* [misc]approximate:  Taking taylor expansion of (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))) in x4
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1) (/ 1 x2)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1) (/ 1 x2)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1) (/ 1 x2)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1) (/ 1 x2)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1) (/ 1 x2)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of -1 in x1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 x1) 0) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (+ (/ 1 x3) (/ 1 x4)) into (+ (/ 1 x3) (/ 1 x4))
* [misc]backup-simplify:  Simplify (* (/ 1 x3) (/ 1 x4)) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (- (/ 1 (* x4 x3))) into (- (/ 1 (* x4 x3)))
* [misc]backup-simplify:  Simplify (+ (+ (/ 1 x3) (/ 1 x4)) (- (/ 1 (* x4 x3)))) into (- (+ (/ 1 x3) (/ 1 x4)) (/ 1 (* x4 x3)))
* [misc]backup-simplify:  Simplify (+ (/ 1 x1) (- (+ (/ 1 x3) (/ 1 x4)) (/ 1 (* x4 x3)))) into (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ 1 (* x4 x3)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ 1 (* x4 x3)))) (* 0 -1)) into (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ 1 (* x4 x3)))
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ 1 (* x4 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (/ 1 (* x4 x3)) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x3
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of -1 in x3
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x3) 0) (* 0 (/ 1 x4))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ 1 (* x4 x3)))) (* 0 -1))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ (/ 1 x3) (/ 1 x4)) into (+ (/ 1 x3) (/ 1 x4))
* [misc]backup-simplify:  Simplify (- (/ 1 (* x4 x3))) into (- (/ 1 (* x4 x3)))
* [misc]backup-simplify:  Simplify (+ (+ (/ 1 x3) (/ 1 x4)) (- (/ 1 (* x4 x3)))) into (- (+ (/ 1 x3) (/ 1 x4)) (/ 1 (* x4 x3)))
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (/ 1 (* x4 x3))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ 1 (- (/ 1 x4))) into (- 1 (/ 1 x4))
* [misc]taylor:  Taking taylor expansion of (- 1 (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of -1 in x4
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x1) (/ 0 x1)) (* 0 (/ 0 x1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)) (* 0 (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)) (* 0 (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x3) 0) (+ (* 0 0) (* 0 (/ 1 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (/ 1 (* x4 x3)))) (* 0 -1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 1) (* 0 0))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ (* 1 (* 1 (* (/ 1 (/ 1 x3)) (* 1 (/ 1 (/ 1 x2)))))) (+ (* 1 (* (/ 1 (/ 1 x4)) (* 1 (* 1 (/ 1 (/ 1 x2)))))) (* -1 (* (/ 1 (/ 1 x4)) (* (/ 1 (/ 1 x3)) (* 1 (/ 1 (/ 1 x2)))))))) into (- (+ (* x2 x4) (* x2 x3)) (* x2 (* x4 x3)))
* [misc]approximate:  Taking taylor expansion of (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x4
* [misc]taylor:  Taking taylor expansion of (- x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))) in x4
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1)) (/ 1 (- x2))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x4
* [misc]taylor:  Taking taylor expansion of (- x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x4
* [misc]taylor:  Taking taylor expansion of (- x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x3
* [misc]taylor:  Taking taylor expansion of (- x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))) in x3
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1)) (/ 1 (- x2))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x3
* [misc]taylor:  Taking taylor expansion of (- x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x3
* [misc]taylor:  Taking taylor expansion of (- x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1)) (/ 1 (- x2))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1)) (/ 1 (- x2))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1)) (/ 1 (- x2))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]backup-simplify:  Simplify (- -1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* -1 1) into -1
* [misc]taylor:  Taking taylor expansion of -1 in x1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (/ -1 x1) 0) into (- (/ 1 x1))
* [misc]backup-simplify:  Simplify (+ (/ -1 x3) (/ -1 x4)) into (- (+ (/ 1 x3) (/ 1 x4)))
* [misc]backup-simplify:  Simplify (* (/ -1 x3) (/ -1 x4)) into (/ 1 (* x4 x3))
* [misc]backup-simplify:  Simplify (- (/ 1 (* x4 x3))) into (- (/ 1 (* x4 x3)))
* [misc]backup-simplify:  Simplify (+ (- (+ (/ 1 x3) (/ 1 x4))) (- (/ 1 (* x4 x3)))) into (- (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (/ 1 x4))))
* [misc]backup-simplify:  Simplify (+ (- (/ 1 x1)) (- (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (/ 1 x4))))) into (- (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4)))))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 (- (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4)))))) (* 0 1)) into (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4))))
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (/ 1 (* x4 x3)) into (/ 1 (* x4 x3))
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x3
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of -1 in x3
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x3) 0) (* 0 (/ -1 x4))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 (- (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4)))))) (* 0 1))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ (/ 1 (* x4 x3)) (/ 1 x4)) into (+ (/ 1 x4) (/ 1 (* x4 x3)))
* [misc]backup-simplify:  Simplify (+ (/ 1 x3) (+ (/ 1 x4) (/ 1 (* x4 x3)))) into (+ (/ 1 x3) (+ (/ 1 x4) (/ 1 (* x4 x3))))
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (+ (/ 1 x4) (/ 1 (* x4 x3)))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x4) (/ 1 (* x4 x3))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ 1 (/ 1 x4)) into (+ 1 (/ 1 x4))
* [misc]taylor:  Taking taylor expansion of (+ 1 (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of -1 in x4
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x1) (/ 0 (- x1))) (* 0 (/ 0 (- x1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x4) (/ 0 (- x4))) (* 0 (/ 0 (- x4))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x3) (/ 0 (- x3))) (* 0 (/ 0 (- x3))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x3) 0) (+ (* 0 0) (* 0 (/ -1 x4)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 0) (+ (* 0 (- (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4)))))) (* 0 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x3) (/ 0 x3)))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (* x4 x3)) (/ 0 (* x4 x3))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 1) (* 0 0))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x4) (/ 0 x4)))) into 0
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x4)) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ (* 1 (* 1 (* (/ 1 (/ 1 (- x3))) (* 1 (/ 1 (/ 1 (- x2))))))) (+ (* 1 (* (/ 1 (/ 1 (- x4))) (* 1 (* 1 (/ 1 (/ 1 (- x2))))))) (* 1 (* (/ 1 (/ 1 (- x4))) (* (/ 1 (/ 1 (- x3))) (* 1 (/ 1 (/ 1 (- x2))))))))) into (- (+ (* x2 x4) (* x2 x3)) (* x2 (* x4 x3)))
* * * [misc]progress:  generating rewritten candidates
* * * * [misc]progress:  [ 1 / 4 ] rewriting at (2 1)
* * * * [misc]progress:  [ 2 / 4 ] rewriting at (2 1 1)
* * * * [misc]progress:  [ 3 / 4 ] rewriting at (2 1 2 1 2 2)
* * * * [misc]progress:  [ 4 / 4 ] rewriting at (2 1 2 1)
* * * [misc]progress:  simplifying candidates
* * * * [misc]progress:  [ 1 / 282 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (- (* 2 (* x2 x3)) (+ (sqr x2) (sqr x3))) x4))>
* [enter]simplify:  Simplifying (- (- (* 2 (* x2 x3)) (+ (sqr x2) (sqr x3))) x4)
* * [misc]simplify:  iters left: 6 (11 enodes)
* * [misc]simplify:  iters left: 5 (20 enodes)
* * [misc]simplify:  iters left: 4 (33 enodes)
* * [misc]simplify:  iters left: 3 (57 enodes)
* * [misc]simplify:  iters left: 2 (81 enodes)
* * [misc]simplify:  iters left: 1 (106 enodes)
* [exit]simplify:  Simplified to (- (* (- x2 x3) (- x3 x2)) x4)
* * * * [misc]progress:  [ 2 / 282 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (- (* x1 (* x4 x3)) (+ (* x1 (sqr x4)) (* x2 (* x4 x3)))) x4))>
* [enter]simplify:  Simplifying (- (- (* x1 (* x4 x3)) (+ (* x1 (sqr x4)) (* x2 (* x4 x3)))) x4)
* * [misc]simplify:  iters left: 6 (12 enodes)
* * [misc]simplify:  iters left: 5 (22 enodes)
* * [misc]simplify:  iters left: 4 (35 enodes)
* * [misc]simplify:  iters left: 3 (51 enodes)
* * [misc]simplify:  iters left: 2 (78 enodes)
* * [misc]simplify:  iters left: 1 (121 enodes)
* [exit]simplify:  Simplified to (* x4 (- (* x1 (- x3 x4)) (+ 1 (* x2 x3))))
* * * * [misc]progress:  [ 3 / 282 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (- (* x1 (* x4 x3)) (+ (* x1 (sqr x4)) (* x2 (* x4 x3)))) x4))>
* [enter]simplify:  Simplifying (- (- (* x1 (* x4 x3)) (+ (* x1 (sqr x4)) (* x2 (* x4 x3)))) x4)
* * [misc]simplify:  iters left: 6 (12 enodes)
* * [misc]simplify:  iters left: 5 (22 enodes)
* * [misc]simplify:  iters left: 4 (35 enodes)
* * [misc]simplify:  iters left: 3 (51 enodes)
* * [misc]simplify:  iters left: 2 (78 enodes)
* * [misc]simplify:  iters left: 1 (121 enodes)
* [exit]simplify:  Simplified to (* x4 (- (* x1 (- x3 x4)) (+ 1 (* x2 x3))))
* * * * [misc]progress:  [ 4 / 282 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (+ 0 (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (- (+ 0 (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4)
* * [misc]simplify:  iters left: 6 (16 enodes)
* * [misc]simplify:  iters left: 5 (39 enodes)
* * [misc]simplify:  iters left: 4 (67 enodes)
* * [misc]simplify:  iters left: 3 (106 enodes)
* * [misc]simplify:  iters left: 2 (145 enodes)
* * [misc]simplify:  iters left: 1 (204 enodes)
* [exit]simplify:  Simplified to (- (- (* (- (- x1 (* x4 x3)) (- (- x2 x4) x3)) x2) (* (+ x2 x3) x1)) x4)
* * * * [misc]progress:  [ 5 / 282 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (+ (- (* x1 (* x4 x3)) (+ (* x1 (sqr x4)) (* (sqr x1) x4))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (- (+ (- (* x1 (* x4 x3)) (+ (* x1 (sqr x4)) (* (sqr x1) x4))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4)
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (56 enodes)
* * [misc]simplify:  iters left: 4 (113 enodes)
* * [misc]simplify:  iters left: 3 (218 enodes)
* * [misc]simplify:  iters left: 2 (376 enodes)
* [exit]simplify:  Simplified to (- (* x2 (- (+ (- x1 x2) x4) (- (* x3 x4) x3))) (- (+ (* x1 (+ x3 x2)) x4) (* (* x4 x1) (- x3 (+ x4 x1)))))
* * * * [misc]progress:  [ 6 / 282 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (+ (- (* x1 (* x4 x3)) (+ (* x1 (sqr x4)) (* (sqr x1) x4))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (- (+ (- (* x1 (* x4 x3)) (+ (* x1 (sqr x4)) (* (sqr x1) x4))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4)
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (56 enodes)
* * [misc]simplify:  iters left: 4 (113 enodes)
* * [misc]simplify:  iters left: 3 (218 enodes)
* * [misc]simplify:  iters left: 2 (376 enodes)
* [exit]simplify:  Simplified to (- (* x2 (- (+ (- x1 x2) x4) (- (* x3 x4) x3))) (- (+ (* x1 (+ x3 x2)) x4) (* (* x4 x1) (- x3 (+ x4 x1)))))
* * * * [misc]progress:  [ 7 / 282 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* (+ x2 x3) x1))) x4)
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (62 enodes)
* * [misc]simplify:  iters left: 4 (130 enodes)
* * [misc]simplify:  iters left: 3 (247 enodes)
* * [misc]simplify:  iters left: 2 (489 enodes)
* [exit]simplify:  Simplified to (+ (+ (* x2 (+ (- x1 (- x2 x3)) (- x4 (* x3 x4)))) (* x3 (+ (- x1 x3) (+ x4 x2)))) (- (* (* x1 x4) (+ (- x1) (+ x2 (- x3 x4)))) (+ (* x1 (+ x2 x3)) x4)))
* * * * [misc]progress:  [ 8 / 282 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* (+ x2 x3) x1))) x4)
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (62 enodes)
* * [misc]simplify:  iters left: 4 (130 enodes)
* * [misc]simplify:  iters left: 3 (247 enodes)
* * [misc]simplify:  iters left: 2 (489 enodes)
* [exit]simplify:  Simplified to (+ (+ (* x2 (+ (- x1 (- x2 x3)) (- x4 (* x3 x4)))) (* x3 (+ (- x1 x3) (+ x4 x2)))) (- (* (* x1 x4) (+ (- x1) (+ x2 (- x3 x4)))) (+ (* x1 (+ x2 x3)) x4)))
* * * * [misc]progress:  [ 9 / 282 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* (+ x2 x3) x1))) x4)
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (62 enodes)
* * [misc]simplify:  iters left: 4 (130 enodes)
* * [misc]simplify:  iters left: 3 (247 enodes)
* * [misc]simplify:  iters left: 2 (489 enodes)
* [exit]simplify:  Simplified to (+ (+ (* x2 (+ (- x1 (- x2 x3)) (- x4 (* x3 x4)))) (* x3 (+ (- x1 x3) (+ x4 x2)))) (- (* (* x1 x4) (+ (- x1) (+ x2 (- x3 x4)))) (+ (* x1 (+ x2 x3)) x4)))
* * * * [misc]progress:  [ 10 / 282 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (- (+ (* x1 x2) (* x2 x3)) (sqr x2)) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (- (+ (* x1 x2) (* x2 x3)) (sqr x2)) (* (+ x2 x3) x1))) x4)
* * [misc]simplify:  iters left: 6 (24 enodes)
* * [misc]simplify:  iters left: 5 (53 enodes)
* * [misc]simplify:  iters left: 4 (114 enodes)
* * [misc]simplify:  iters left: 3 (234 enodes)
* * [misc]simplify:  iters left: 2 (460 enodes)
* [exit]simplify:  Simplified to (+ (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2)) (+ (* x3 (+ (- x1 x3) (+ x4 x2))) (- (- (* (- x3 x2) x2) (* x3 x1)) (+ 0 x4))))
* * * * [misc]progress:  [ 11 / 282 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (- (+ (* x2 x4) (* x2 x3)) (* x2 (* x4 x3))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (- (+ (* x2 x4) (* x2 x3)) (* x2 (* x4 x3))) (* (+ x2 x3) x1))) x4)
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (57 enodes)
* * [misc]simplify:  iters left: 4 (120 enodes)
* * [misc]simplify:  iters left: 3 (253 enodes)
* [exit]simplify:  Simplified to (+ (+ (* x3 (+ (+ x4 x2) (- x1 x3))) (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4))) (- (- (* x2 (- (+ x3 x4) (* x3 x4))) (* x1 (+ x2 x3))) x4))
* * * * [misc]progress:  [ 12 / 282 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (- (+ (* x2 x4) (* x2 x3)) (* x2 (* x4 x3))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (- (+ (* x2 x4) (* x2 x3)) (* x2 (* x4 x3))) (* (+ x2 x3) x1))) x4)
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (57 enodes)
* * [misc]simplify:  iters left: 4 (120 enodes)
* * [misc]simplify:  iters left: 3 (253 enodes)
* [exit]simplify:  Simplified to (+ (+ (* x3 (+ (+ x4 x2) (- x1 x3))) (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4))) (- (- (* x2 (- (+ x3 x4) (* x3 x4))) (* x1 (+ x2 x3))) x4))
* * * * [misc]progress:  [ 13 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))
* * [misc]simplify:  iters left: 6 (28 enodes)
* * [misc]simplify:  iters left: 5 (77 enodes)
* * [misc]simplify:  iters left: 4 (169 enodes)
* * [misc]simplify:  iters left: 3 (353 enodes)
* [exit]simplify:  Simplified to (/ (exp (* (* x1 x4) (- x3 (- (- x4 x2) (- x1))))) (/ (/ (pow (exp x1) (+ x2 x3)) (pow (exp x3) (+ (+ x2 x4) (- x1 x3)))) (pow (exp x2) (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))))
* [exit]simplify:  Simplified to (/ (exp (* (* x1 x4) (- x3 (- (- x4 x2) (- x1))))) (/ (/ (pow (exp x1) (+ x2 x3)) (pow (exp x3) (+ (+ x2 x4) (- x1 x3)))) (pow (exp x2) (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))))
* * * * [misc]progress:  [ 14 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (exp (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (exp (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (71 enodes)
* * [misc]simplify:  iters left: 4 (165 enodes)
* * [misc]simplify:  iters left: 3 (358 enodes)
* [exit]simplify:  Simplified to (exp (+ (+ (* (+ (+ x4 x2) (- x1 x3)) x3) (* (* x1 x4) (- x3 (- (- x4 x2) (- x1))))) (- (* (- (+ (- x1 x2) (+ x3 x4)) (* x3 x4)) x2) (* (+ x2 x3) x1))))
* [exit]simplify:  Simplified to (exp (+ (+ (* (+ (+ x4 x2) (- x1 x3)) x3) (* (* x1 x4) (- x3 (- (- x4 x2) (- x1))))) (- (* (- (+ (- x1 x2) (+ x3 x4)) (* x3 x4)) x2) (* (+ x2 x3) x1))))
* * * * [misc]progress:  [ 15 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (exp (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (* (exp (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (72 enodes)
* * [misc]simplify:  iters left: 4 (156 enodes)
* * [misc]simplify:  iters left: 3 (330 enodes)
* [exit]simplify:  Simplified to (exp (+ (- (* x2 (+ (- (+ x3 x1) x2) (- x4 (* x3 x4)))) (- (* (+ x2 x3) x1) (* x3 (+ (+ x4 x2) (- x1 x3))))) (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4))))
* [exit]simplify:  Simplified to (exp (+ (- (* x2 (+ (- (+ x3 x1) x2) (- x4 (* x3 x4)))) (- (* (+ x2 x3) x1) (* x3 (+ (+ x4 x2) (- x1 x3))))) (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4))))
* * * * [misc]progress:  [ 16 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (exp (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3))) (exp (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (* (exp (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3))) (exp (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (68 enodes)
* * [misc]simplify:  iters left: 4 (160 enodes)
* * [misc]simplify:  iters left: 3 (354 enodes)
* [exit]simplify:  Simplified to (exp (+ (- (* x2 (- (+ (+ x3 x4) (- x1 x2)) (* x3 x4))) (- (* (+ x2 x3) x1) (* x3 (+ (+ x4 x2) (- x1 x3))))) (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))))
* [exit]simplify:  Simplified to (exp (+ (- (* x2 (- (+ (+ x3 x4) (- x1 x2)) (* x3 x4))) (- (* (+ x2 x3) x1) (* x3 (+ (+ x4 x2) (- x1 x3))))) (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))))
* * * * [misc]progress:  [ 17 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (pow (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) 1) x4))>
* * * * [misc]progress:  [ 18 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (exp (log (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (log (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (62 enodes)
* * [misc]simplify:  iters left: 4 (125 enodes)
* * [misc]simplify:  iters left: 3 (237 enodes)
* * [misc]simplify:  iters left: 2 (437 enodes)
* [exit]simplify:  Simplified to (log (+ (+ (* x3 (+ (- x2 x3) (+ x1 x4))) (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))) (- (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (* x1 (+ x2 x3)))))
* [exit]simplify:  Simplified to (log (+ (+ (* x3 (+ (- x2 x3) (+ x1 x4))) (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))) (- (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (* x1 (+ x2 x3)))))
* * * * [misc]progress:  [ 19 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (exp (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (exp (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (65 enodes)
* * [misc]simplify:  iters left: 4 (138 enodes)
* * [misc]simplify:  iters left: 3 (305 enodes)
* [exit]simplify:  Simplified to (* (/ (pow (exp x2) (- (+ x3 x4) (* x3 x4))) (/ (pow (exp x1) (+ x2 x3)) (pow (exp x2) (- x1 x2)))) (* (pow (exp x3) (+ (+ x4 x1) (- x2 x3))) (pow (exp (* x1 x4)) (+ (- x1) (+ x2 (- x3 x4))))))
* [exit]simplify:  Simplified to (* (/ (pow (exp x2) (- (+ x3 x4) (* x3 x4))) (/ (pow (exp x1) (+ x2 x3)) (pow (exp x2) (- x1 x2)))) (* (pow (exp x3) (+ (+ x4 x1) (- x2 x3))) (pow (exp (* x1 x4)) (+ (- x1) (+ x2 (- x3 x4))))))
* * * * [misc]progress:  [ 20 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (cube (cbrt (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (cbrt (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (62 enodes)
* * [misc]simplify:  iters left: 4 (125 enodes)
* * [misc]simplify:  iters left: 3 (237 enodes)
* * [misc]simplify:  iters left: 2 (437 enodes)
* [exit]simplify:  Simplified to (cbrt (+ (+ (* x3 (+ (- x2 x3) (+ x1 x4))) (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))) (- (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (* x1 (+ x2 x3)))))
* [exit]simplify:  Simplified to (cbrt (+ (+ (* x3 (+ (- x2 x3) (+ x1 x4))) (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))) (- (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (* x1 (+ x2 x3)))))
* * * * [misc]progress:  [ 21 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (cbrt (cube (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (cube (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (64 enodes)
* * [misc]simplify:  iters left: 4 (141 enodes)
* * [misc]simplify:  iters left: 3 (329 enodes)
* [exit]simplify:  Simplified to (cube (+ (+ (* x3 (+ (+ x4 x2) (- x1 x3))) (* (* x1 x4) (- x3 (- (- x4 x2) (- x1))))) (- (* x2 (+ (+ (- x1 x2) x4) (- x3 (* x3 x4)))) (* x1 (+ x2 x3)))))
* [exit]simplify:  Simplified to (cube (+ (+ (* x3 (+ (+ x4 x2) (- x1 x3))) (* (* x1 x4) (- x3 (- (- x4 x2) (- x1))))) (- (* x2 (+ (+ (- x1 x2) x4) (- x3 (* x3 x4)))) (* x1 (+ x2 x3)))))
* * * * [misc]progress:  [ 22 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (sqr (sqrt (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (sqrt (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (62 enodes)
* * [misc]simplify:  iters left: 4 (125 enodes)
* * [misc]simplify:  iters left: 3 (237 enodes)
* * [misc]simplify:  iters left: 2 (437 enodes)
* [exit]simplify:  Simplified to (sqrt (+ (+ (* x3 (+ (- x2 x3) (+ x1 x4))) (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))) (- (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (* x1 (+ x2 x3)))))
* [exit]simplify:  Simplified to (sqrt (+ (+ (* x3 (+ (- x2 x3) (+ x1 x4))) (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))) (- (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (* x1 (+ x2 x3)))))
* * * * [misc]progress:  [ 23 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (71 enodes)
* * [misc]simplify:  iters left: 5 (194 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* x2 (- (cube (+ x4 x3)) (cube (* x4 x3)))) (+ (* x2 (+ x1 x2)) (sqr x1))) (* (* x2 (- (cube x1) (cube x2))) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))))) (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (* (+ (* x2 (+ x1 x2)) (sqr x1)) (* x1 (+ (cube x3) (cube x2)))))) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ (* x2 (+ x1 x2)) (sqr x1)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))))) (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2))))) (+ (* x4 (+ x4 x3)) (* x3 x3))))))
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* x2 (- (cube (+ x4 x3)) (cube (* x4 x3)))) (+ (* x2 (+ x1 x2)) (sqr x1))) (* (* x2 (- (cube x1) (cube x2))) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))))) (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (* (+ (* x2 (+ x1 x2)) (sqr x1)) (* x1 (+ (cube x3) (cube x2)))))) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ (* x2 (+ x1 x2)) (sqr x1)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))))) (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2))))) (+ (* x4 (+ x4 x3)) (* x3 x3))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (38 enodes)
* * [misc]simplify:  iters left: 5 (105 enodes)
* * [misc]simplify:  iters left: 4 (330 enodes)
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))))
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))))
* * * * [misc]progress:  [ 24 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (69 enodes)
* * [misc]simplify:  iters left: 5 (177 enodes)
* * [misc]simplify:  iters left: 4 (494 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (- x2 x3)) (+ (* (+ (* x2 (+ x2 x1)) (sqr x1)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (- (cube x1) (cube x2))))) (* (* (* x1 (- (* x2 x2) (* x3 x3))) (+ (* x2 (+ x2 x1)) (sqr x1))) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))))) (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1))))) (* (+ (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) x3) (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (+ (* x2 x2) (* (- x1 x2) x1)) (- (cube x3) (cube x4))))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (* (* (* x1 x4) (+ (* x2 x2) (* (- x1 x2) x1))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (* (* (+ (* x2 (+ x2 x1)) (sqr x1)) (- x2 x3)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (- x2 x3)) (+ (* (+ (* x2 (+ x2 x1)) (sqr x1)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (- (cube x1) (cube x2))))) (* (* (* x1 (- (* x2 x2) (* x3 x3))) (+ (* x2 (+ x2 x1)) (sqr x1))) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))))) (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1))))) (* (+ (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) x3) (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (+ (* x2 x2) (* (- x1 x2) x1)) (- (cube x3) (cube x4))))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (* (* (* x1 x4) (+ (* x2 x2) (* (- x1 x2) x1))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (* (* (+ (* x2 (+ x2 x1)) (sqr x1)) (- x2 x3)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (36 enodes)
* * [misc]simplify:  iters left: 5 (93 enodes)
* * [misc]simplify:  iters left: 4 (254 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- x2 x3)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))))) (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- x2 x3)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))))) (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* * * * [misc]progress:  [ 25 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (67 enodes)
* * [misc]simplify:  iters left: 5 (187 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (- (* x2 (* (+ (* (* (- (+ x4 x3) (* x4 x3)) (+ (* x4 x3) (+ x4 x3))) (+ (* x2 (+ x2 x1)) (sqr x1))) (* (- (cube x1) (cube x2)) (+ (* x4 x3) (+ x4 x3)))) (+ (* x3 (- x3 x2)) (* x2 x2)))) (* (+ (* x4 x3) (+ x4 x3)) (* (+ (* x2 (+ x2 x1)) (sqr x1)) (* (+ (cube x3) (cube x2)) x1))))) (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (+ (* x2 (+ x2 x1)) (sqr x1)) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* x4 x3) (+ x4 x3))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (- (* x2 (* (+ (* (* (- (+ x4 x3) (* x4 x3)) (+ (* x4 x3) (+ x4 x3))) (+ (* x2 (+ x2 x1)) (sqr x1))) (* (- (cube x1) (cube x2)) (+ (* x4 x3) (+ x4 x3)))) (+ (* x3 (- x3 x2)) (* x2 x2)))) (* (+ (* x4 x3) (+ x4 x3)) (* (+ (* x2 (+ x2 x1)) (sqr x1)) (* (+ (cube x3) (cube x2)) x1))))) (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (+ (* x2 (+ x2 x1)) (sqr x1)) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* x4 x3) (+ x4 x3))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (34 enodes)
* * [misc]simplify:  iters left: 5 (95 enodes)
* * [misc]simplify:  iters left: 4 (289 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))) (* x2 x2)) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (+ x3 x4) (* x4 x3))))
* [exit]simplify:  Simplified to (* (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))) (* x2 x2)) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (+ x3 x4) (* x4 x3))))
* * * * [misc]progress:  [ 26 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (65 enodes)
* * [misc]simplify:  iters left: 5 (170 enodes)
* * [misc]simplify:  iters left: 4 (479 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) x3) (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4))))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* x2 (+ x2 x1)) (sqr x1)) (* (+ (* x4 x3) (+ x4 x3)) (- x2 x3)))) (* (- (* (* x2 (- x2 x3)) (+ (* (- (cube x1) (cube x2)) (+ (* x4 x3) (+ x4 x3))) (* (+ (* x2 (+ x2 x1)) (sqr x1)) (- (sqr (+ x4 x3)) (* (* x4 x3) (* x4 x3)))))) (* (* (* (- x2 x3) (* x1 (+ x2 x3))) (+ (* x4 x3) (+ x4 x3))) (+ (* x2 (+ x2 x1)) (sqr x1)))) (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) x3) (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4))))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* x2 (+ x2 x1)) (sqr x1)) (* (+ (* x4 x3) (+ x4 x3)) (- x2 x3)))) (* (- (* (* x2 (- x2 x3)) (+ (* (- (cube x1) (cube x2)) (+ (* x4 x3) (+ x4 x3))) (* (+ (* x2 (+ x2 x1)) (sqr x1)) (- (sqr (+ x4 x3)) (* (* x4 x3) (* x4 x3)))))) (* (* (* (- x2 x3) (* x1 (+ x2 x3))) (+ (* x4 x3) (+ x4 x3))) (+ (* x2 (+ x2 x1)) (sqr x1)))) (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (32 enodes)
* * [misc]simplify:  iters left: 5 (83 enodes)
* * [misc]simplify:  iters left: 4 (234 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (+ x3 x4) (* x4 x3)) (- x2 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)))
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (+ x3 x4) (* x4 x3)) (- x2 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)))
* * * * [misc]progress:  [ 27 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (69 enodes)
* * [misc]simplify:  iters left: 5 (193 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (* (- x1 x2) (+ x2 x1))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))) (* (+ x2 x1) (+ (cube x3) (cube x2)))) x1)) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))))
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (* (- x1 x2) (+ x2 x1))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))) (* (+ x2 x1) (+ (cube x3) (cube x2)))) x1)) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (36 enodes)
* * [misc]simplify:  iters left: 5 (102 enodes)
* * [misc]simplify:  iters left: 4 (277 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* * * * [misc]progress:  [ 28 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (67 enodes)
* * [misc]simplify:  iters left: 5 (176 enodes)
* * [misc]simplify:  iters left: 4 (468 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2))))) (- (* (* x2 (- x2 x3)) (+ (* (+ x2 x1) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* (- x1 x2) (+ x2 x1)) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* (* (* (- x2 x3) (* x1 (+ x2 x3))) (+ x2 x1)) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (- (sqr x1) (* x2 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) x3) (* (* (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2)))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (* (+ x4 x3) x4) (* x3 x3)))) (* (* (+ x2 x1) (- x2 x3)) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2))))) (- (* (* x2 (- x2 x3)) (+ (* (+ x2 x1) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* (- x1 x2) (+ x2 x1)) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* (* (* (- x2 x3) (* x1 (+ x2 x3))) (+ x2 x1)) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (- (sqr x1) (* x2 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) x3) (* (* (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2)))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (* (+ x4 x3) x4) (* x3 x3)))) (* (* (+ x2 x1) (- x2 x3)) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (34 enodes)
* * [misc]simplify:  iters left: 5 (90 enodes)
* * [misc]simplify:  iters left: 4 (240 enodes)
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2)))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 (+ x3 x4)) (* x4 x4)))) (* (* (+ x2 x1) (- x2 x3)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))))
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2)))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 (+ x3 x4)) (* x4 x4)))) (* (* (+ x2 x1) (- x2 x3)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))))
* * * * [misc]progress:  [ 29 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (65 enodes)
* * [misc]simplify:  iters left: 5 (186 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2)))) (* (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* (+ (+ x4 x3) (* x4 x3)) (* (- x1 x2) (+ x2 x1))) x2) (* (* x2 (+ x2 x1)) (* (- (+ x4 x3) (* x4 x3)) (+ (+ x4 x3) (* x4 x3)))))) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (* x1 (+ (cube x3) (cube x2))))) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2)))) (* (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* (+ (+ x4 x3) (* x4 x3)) (* (- x1 x2) (+ x2 x1))) x2) (* (* x2 (+ x2 x1)) (* (- (+ x4 x3) (* x4 x3)) (+ (+ x4 x3) (* x4 x3)))))) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (* x1 (+ (cube x3) (cube x2))))) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (32 enodes)
* * [misc]simplify:  iters left: 5 (92 enodes)
* * [misc]simplify:  iters left: 4 (272 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ x2 x1) (+ (+ x3 x4) (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2))) (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* [exit]simplify:  Simplified to (* (* (* (+ x2 x1) (+ (+ x3 x4) (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2))) (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* * * * [misc]progress:  [ 30 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (63 enodes)
* * [misc]simplify:  iters left: 5 (169 enodes)
* * [misc]simplify:  iters left: 4 (458 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ x2 x1) (- x2 x3)) (+ (+ x4 x3) (* x4 x3))) (+ (* x3 (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (+ (* x2 x2) (* (- x1 x2) x1)) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* (- x1 x2) x1))))))) (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1)))) (- (* (* (- x2 x3) x2) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))))) (* (* (- x2 x3) (* (+ x2 x3) x1)) (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3)))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ x2 x1) (- x2 x3)) (+ (+ x4 x3) (* x4 x3))) (+ (* x3 (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (+ (* x2 x2) (* (- x1 x2) x1)) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* (- x1 x2) x1))))))) (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1)))) (- (* (* (- x2 x3) x2) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))))) (* (* (- x2 x3) (* (+ x2 x3) x1)) (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (80 enodes)
* * [misc]simplify:  iters left: 4 (214 enodes)
* [exit]simplify:  Simplified to (* (* (* (* (- x2 x3) (+ x2 x1)) (+ (+ x3 x4) (* x4 x3))) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* [exit]simplify:  Simplified to (* (* (* (* (- x2 x3) (+ x2 x1)) (+ (+ x3 x4) (* x4 x3))) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* * * * [misc]progress:  [ 31 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (65 enodes)
* * [misc]simplify:  iters left: 5 (170 enodes)
* * [misc]simplify:  iters left: 4 (452 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1)))) (- (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) x2) (+ (cube (- x1 x2)) (cube (- (+ x4 x3) (* x4 x3))))) (* (+ (* (- (+ x4 x3) (* x4 x3)) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (- x1 x2) (- x1 x2))) (* x1 (+ (cube x3) (cube x2)))))) (* (+ (* (* x3 (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (+ (* x2 x2) (* (- x1 x2) x1)) (- (cube x3) (cube x4))))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* (- x1 x2) x1)))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (- (+ x4 x3) (* x4 x3)) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (- x1 x2) (- x1 x2))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1)))) (- (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) x2) (+ (cube (- x1 x2)) (cube (- (+ x4 x3) (* x4 x3))))) (* (+ (* (- (+ x4 x3) (* x4 x3)) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (- x1 x2) (- x1 x2))) (* x1 (+ (cube x3) (cube x2)))))) (* (+ (* (* x3 (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (+ (* x2 x2) (* (- x1 x2) x1)) (- (cube x3) (cube x4))))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* (- x1 x2) x1)))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (- (+ x4 x3) (* x4 x3)) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (- x1 x2) (- x1 x2))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (36 enodes)
* * [misc]simplify:  iters left: 5 (93 enodes)
* * [misc]simplify:  iters left: 4 (238 enodes)
* [exit]simplify:  Simplified to (* (* (+ (sqr (- x1 x2)) (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3)))) (- (* x3 x3) (* x2 (- x3 x2)))) (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2))) (* x2 x2)) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* [exit]simplify:  Simplified to (* (* (+ (sqr (- x1 x2)) (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3)))) (- (* x3 x3) (* x2 (- x3 x2)))) (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2))) (* x2 x2)) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* * * * [misc]progress:  [ 32 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (63 enodes)
* * [misc]simplify:  iters left: 5 (153 enodes)
* * [misc]simplify:  iters left: 4 (372 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) x3) (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (- (sqr x1) (* x2 (- x1 x2))) (- (cube x3) (cube x4))))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2))))))) (+ (* (* (- x2 x3) (- x1 x2)) (- x1 x2)) (* (* (- x2 x3) (- (+ x4 x3) (* x4 x3))) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))))) (* (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2))))) (- (* (* x2 (- x2 x3)) (+ (cube (- (+ x4 x3) (* x4 x3))) (cube (- x1 x2)))) (* (* (* x1 (+ x2 x3)) (- x2 x3)) (+ (* (- (+ x4 x3) (* x4 x3)) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (- x1 x2) (- x1 x2)))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) x3) (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (- (sqr x1) (* x2 (- x1 x2))) (- (cube x3) (cube x4))))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2))))))) (+ (* (* (- x2 x3) (- x1 x2)) (- x1 x2)) (* (* (- x2 x3) (- (+ x4 x3) (* x4 x3))) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))))) (* (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2))))) (- (* (* x2 (- x2 x3)) (+ (cube (- (+ x4 x3) (* x4 x3))) (cube (- x1 x2)))) (* (* (* x1 (+ x2 x3)) (- x2 x3)) (+ (* (- (+ x4 x3) (* x4 x3)) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (- x1 x2) (- x1 x2)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (34 enodes)
* * [misc]simplify:  iters left: 5 (81 enodes)
* * [misc]simplify:  iters left: 4 (201 enodes)
* [exit]simplify:  Simplified to (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* (* (* (+ (* x2 x2) (* (- x1 x2) x1)) (+ (* x3 x3) (* x4 (+ x3 x4)))) (- x2 x3)) (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2))))))
* [exit]simplify:  Simplified to (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* (* (* (+ (* x2 x2) (* (- x1 x2) x1)) (+ (* x3 x3) (* x4 (+ x3 x4)))) (- x2 x3)) (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2))))))
* * * * [misc]progress:  [ 33 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (61 enodes)
* * [misc]simplify:  iters left: 5 (159 enodes)
* * [misc]simplify:  iters left: 4 (434 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (- (sqr x1) (* x2 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) x3) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2))))) (+ (* (+ x4 x3) x4) (* x3 x3)))) (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2)))) (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2))))) (- (* (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3)))) (+ (* x3 (- x3 x2)) (* x2 x2))) x2) (* (* (+ (cube x3) (cube x2)) x1) (- (- x1 x2) (- (+ x4 x3) (* x4 x3)))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (- (sqr x1) (* x2 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) x3) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2))))) (+ (* (+ x4 x3) x4) (* x3 x3)))) (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2)))) (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2))))) (- (* (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3)))) (+ (* x3 (- x3 x2)) (* x2 x2))) x2) (* (* (+ (cube x3) (cube x2)) x1) (- (- x1 x2) (- (+ x4 x3) (* x4 x3)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (32 enodes)
* * [misc]simplify:  iters left: 5 (87 enodes)
* * [misc]simplify:  iters left: 4 (224 enodes)
* [exit]simplify:  Simplified to (* (* (* (- (- (- x1 x2) x3) (- x4 (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2))) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* [exit]simplify:  Simplified to (* (* (* (- (- (- x1 x2) x3) (- x4 (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2))) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* * * * [misc]progress:  [ 34 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (59 enodes)
* * [misc]simplify:  iters left: 5 (142 enodes)
* * [misc]simplify:  iters left: 4 (361 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2))))) (- (* x2 (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3)))) (- x2 x3))) (* (* x1 (- (* x2 x2) (* x3 x3))) (- (- x1 x2) (- (+ x4 x3) (* x4 x3)))))) (* (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (- x2 x3)) (+ (* x3 (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (- (sqr x1) (* x2 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2))))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2))))) (- (* x2 (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3)))) (- x2 x3))) (* (* x1 (- (* x2 x2) (* x3 x3))) (- (- x1 x2) (- (+ x4 x3) (* x4 x3)))))) (* (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (- x2 x3)) (+ (* x3 (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (- (sqr x1) (* x2 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (75 enodes)
* * [misc]simplify:  iters left: 4 (181 enodes)
* * [misc]simplify:  iters left: 3 (459 enodes)
* [exit]simplify:  Simplified to (* (* (* (- (- x1 (+ x2 x4)) (- x3 (* x4 x3))) (- x2 x3)) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* [exit]simplify:  Simplified to (* (* (* (- (- x1 (+ x2 x4)) (- x3 (* x4 x3))) (- x2 x3)) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* * * * [misc]progress:  [ 35 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3)))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3))))
* * [misc]simplify:  iters left: 6 (59 enodes)
* * [misc]simplify:  iters left: 5 (157 enodes)
* * [misc]simplify:  iters left: 4 (419 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (+ (* x2 x2) (* (- x1 x2) x1)) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) x3) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* (- x1 x2) x1)))) (+ (* (+ x4 x3) x4) (* x3 x3)))) (+ (+ (* (* (* x1 (+ x2 x3)) x2) (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3))) (* (* x1 (+ x2 x3)) (* x1 (+ x2 x3)))) (sqr (* x2 (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3)))))) (* (- (cube (* x2 (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3)))) (cube (* x1 (+ x2 x3)))) (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (+ (* x2 x2) (* (- x1 x2) x1)) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) x3) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* (- x1 x2) x1)))) (+ (* (+ x4 x3) x4) (* x3 x3)))) (+ (+ (* (* (* x1 (+ x2 x3)) x2) (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3))) (* (* x1 (+ x2 x3)) (* x1 (+ x2 x3)))) (sqr (* x2 (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3)))))) (* (- (cube (* x2 (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3)))) (cube (* x1 (+ x2 x3)))) (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (36 enodes)
* * [misc]simplify:  iters left: 5 (106 enodes)
* * [misc]simplify:  iters left: 4 (269 enodes)
* [exit]simplify:  Simplified to (* (+ (+ (sqr (* x1 (+ x3 x2))) (* (- (+ x3 x4) (- (* x4 x3) (- x1 x2))) (* (* x2 x1) (+ x3 x2)))) (* (* x2 (- (+ x3 x4) (- (* x4 x3) (- x1 x2)))) (* x2 (- (+ x3 x4) (- (* x4 x3) (- x1 x2)))))) (* (+ (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* [exit]simplify:  Simplified to (* (+ (+ (sqr (* x1 (+ x3 x2))) (* (- (+ x3 x4) (- (* x4 x3) (- x1 x2))) (* (* x2 x1) (+ x3 x2)))) (* (* x2 (- (+ x3 x4) (- (* x4 x3) (- x1 x2)))) (* x2 (- (+ x3 x4) (- (* x4 x3) (- x1 x2)))))) (* (+ (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* * * * [misc]progress:  [ 36 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (55 enodes)
* * [misc]simplify:  iters left: 5 (149 enodes)
* * [misc]simplify:  iters left: 4 (397 enodes)
* [exit]simplify:  Simplified to (+ (+ (* (- (sqr (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))))) (* (* (+ x2 x3) x1) (* (+ x2 x3) x1))) (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1))))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1))) (+ (* (+ x2 x3) x1) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3)))))))) (* (+ (* (+ x2 x3) x1) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))))) (* (* x3 (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (+ (* x2 x2) (* (- x1 x2) x1)) (- (cube x3) (cube x4)))))))
* [exit]simplify:  Simplified to (+ (+ (* (- (sqr (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))))) (* (* (+ x2 x3) x1) (* (+ x2 x3) x1))) (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1))))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1))) (+ (* (+ x2 x3) x1) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3)))))))) (* (+ (* (+ x2 x3) x1) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))))) (* (* x3 (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (+ (* x2 x2) (* (- x1 x2) x1)) (- (cube x3) (cube x4)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (32 enodes)
* * [misc]simplify:  iters left: 5 (92 enodes)
* * [misc]simplify:  iters left: 4 (224 enodes)
* [exit]simplify:  Simplified to (* (+ (* x2 (- (+ x3 x4) (- (* x4 x3) (- x1 x2)))) (* (+ x3 x2) x1)) (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2))) (* x2 x2)) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* [exit]simplify:  Simplified to (* (+ (* x2 (- (+ x3 x4) (- (* x4 x3) (- x1 x2)))) (* (+ x3 x2) x1)) (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2))) (* x2 x2)) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* * * * [misc]progress:  [ 37 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (68 enodes)
* * [misc]simplify:  iters left: 5 (188 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* x2 (+ (* x2 (+ x2 x1)) (sqr x1))) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (- (cube x1) (cube x2))) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))))) (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (* (+ (* x2 (+ x2 x1)) (sqr x1)) (* (+ (cube x3) (cube x2)) x1)))) (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)))) (* (* (+ (* x2 (+ x2 x1)) (sqr x1)) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))))) (+ (* (+ x4 x3) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))) x3))))
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* x2 (+ (* x2 (+ x2 x1)) (sqr x1))) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (- (cube x1) (cube x2))) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))))) (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (* (+ (* x2 (+ x2 x1)) (sqr x1)) (* (+ (cube x3) (cube x2)) x1)))) (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)))) (* (* (+ (* x2 (+ x2 x1)) (sqr x1)) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))))) (+ (* (+ x4 x3) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))) x3))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (35 enodes)
* * [misc]simplify:  iters left: 5 (99 enodes)
* * [misc]simplify:  iters left: 4 (285 enodes)
* [exit]simplify:  Simplified to (* (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))) (- (* x3 x3) (* x2 (- x3 x2)))))
* [exit]simplify:  Simplified to (* (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))) (- (* x3 x3) (* x2 (- x3 x2)))))
* * * * [misc]progress:  [ 38 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (65 enodes)
* * [misc]simplify:  iters left: 5 (169 enodes)
* * [misc]simplify:  iters left: 4 (449 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (+ (* x2 (+ x2 x1)) (sqr x1))) (- x2 x3)) (+ (* (+ x4 x3) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (* x3 (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))))) (* (- (* (* x2 (- x2 x3)) (+ (* (- (cube x1) (cube x2)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))) (* (- (cube (+ x4 x3)) (cube (* x4 x3))) (+ (* x2 (+ x2 x1)) (sqr x1))))) (* (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (+ (* x2 (+ x2 x1)) (sqr x1))) (* (- x2 x3) (* x1 (+ x2 x3))))) (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (+ (* x2 (+ x2 x1)) (sqr x1))) (- x2 x3)) (+ (* (+ x4 x3) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (* x3 (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))))) (* (- (* (* x2 (- x2 x3)) (+ (* (- (cube x1) (cube x2)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))) (* (- (cube (+ x4 x3)) (cube (* x4 x3))) (+ (* x2 (+ x2 x1)) (sqr x1))))) (* (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (+ (* x2 (+ x2 x1)) (sqr x1))) (* (- x2 x3) (* x1 (+ x2 x3))))) (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (32 enodes)
* * [misc]simplify:  iters left: 5 (86 enodes)
* * [misc]simplify:  iters left: 4 (242 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))) (- x2 x3))) (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2))) (* x2 x2)) (* (+ x3 x4) (+ (* x2 x2) (* (- x1 x2) x1)))))
* [exit]simplify:  Simplified to (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))) (- x2 x3))) (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2))) (* x2 x2)) (* (+ x3 x4) (+ (* x2 x2) (* (- x1 x2) x1)))))
* * * * [misc]progress:  [ 39 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (64 enodes)
* * [misc]simplify:  iters left: 5 (181 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (+ (* x2 (+ x1 x2)) (sqr x1)) (* (+ (* x4 x3) (+ x4 x3)) (- (+ x4 x3) (* x4 x3)))) (* (+ (* x4 x3) (+ x4 x3)) (- (cube x1) (cube x2))))) x2) (* (* (+ (* x2 (+ x1 x2)) (sqr x1)) (* (+ (* x4 x3) (+ x4 x3)) (+ (cube x3) (cube x2)))) x1))) (* (* (+ (* x2 (+ x1 x2)) (sqr x1)) (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* x4 x3) (+ x4 x3)))) (+ (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) x4) (* x1 (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))) x3))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (+ (* x2 (+ x1 x2)) (sqr x1)) (* (+ (* x4 x3) (+ x4 x3)) (- (+ x4 x3) (* x4 x3)))) (* (+ (* x4 x3) (+ x4 x3)) (- (cube x1) (cube x2))))) x2) (* (* (+ (* x2 (+ x1 x2)) (sqr x1)) (* (+ (* x4 x3) (+ x4 x3)) (+ (cube x3) (cube x2)))) x1))) (* (* (+ (* x2 (+ x1 x2)) (sqr x1)) (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* x4 x3) (+ x4 x3)))) (+ (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) x4) (* x1 (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))) x3))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (31 enodes)
* * [misc]simplify:  iters left: 5 (88 enodes)
* * [misc]simplify:  iters left: 4 (274 enodes)
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- (+ (- x3 x4) (- x1)) x2))) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (+ (+ x3 x4) (* x4 x3))) (- (* x3 x3) (* x2 (- x3 x2)))))
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- (+ (- x3 x4) (- x1)) x2))) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (+ (+ x3 x4) (* x4 x3))) (- (* x3 x3) (* x2 (- x3 x2)))))
* * * * [misc]progress:  [ 40 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (61 enodes)
* * [misc]simplify:  iters left: 5 (162 enodes)
* * [misc]simplify:  iters left: 4 (444 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ (* x4 x3) (+ x4 x3)) (- x2 x3)) (+ (* x2 (+ x2 x1)) (sqr x1))) (+ (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* (* x1 x4) (+ x4 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (* x3 (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))))) (* (- (* (* (- x2 x3) x2) (+ (* (- (sqr (+ x4 x3)) (* (* x4 x3) (* x4 x3))) (+ (* x2 (+ x2 x1)) (sqr x1))) (* (+ (* x4 x3) (+ x4 x3)) (- (cube x1) (cube x2))))) (* (* (+ (* x2 (+ x2 x1)) (sqr x1)) (+ (* x4 x3) (+ x4 x3))) (* (* (- x2 x3) (+ x2 x3)) x1))) (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ (* x4 x3) (+ x4 x3)) (- x2 x3)) (+ (* x2 (+ x2 x1)) (sqr x1))) (+ (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* (* x1 x4) (+ x4 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (* x3 (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))))) (* (- (* (* (- x2 x3) x2) (+ (* (- (sqr (+ x4 x3)) (* (* x4 x3) (* x4 x3))) (+ (* x2 (+ x2 x1)) (sqr x1))) (* (+ (* x4 x3) (+ x4 x3)) (- (cube x1) (cube x2))))) (* (* (+ (* x2 (+ x2 x1)) (sqr x1)) (+ (* x4 x3) (+ x4 x3))) (* (* (- x2 x3) (+ x2 x3)) x1))) (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (28 enodes)
* * [misc]simplify:  iters left: 5 (74 enodes)
* * [misc]simplify:  iters left: 4 (223 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (+ x3 x4) (* x4 x3)) (- x2 x3))) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (+ x3 x4) (* x4 x3)) (- x2 x3))) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* * * * [misc]progress:  [ 41 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (66 enodes)
* * [misc]simplify:  iters left: 5 (187 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ x2 x1)) (+ (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))) (* x3 (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2))))))))) (* (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (- (cube (+ x4 x3)) (cube (* x4 x3))) (* (+ x2 x1) x2)) (* (* x2 (* (+ x2 x1) (- x1 x2))) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))))) (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (* (+ x2 x1) (* (+ (cube x3) (cube x2)) x1))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ x2 x1)) (+ (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))) (* x3 (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2))))))))) (* (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (- (cube (+ x4 x3)) (cube (* x4 x3))) (* (+ x2 x1) x2)) (* (* x2 (* (+ x2 x1) (- x1 x2))) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))))) (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (* (+ x2 x1) (* (+ (cube x3) (cube x2)) x1))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (96 enodes)
* * [misc]simplify:  iters left: 4 (280 enodes)
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2)))) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (* (+ x2 x1) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4)))))
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2)))) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (* (+ x2 x1) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4)))))
* * * * [misc]progress:  [ 42 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (63 enodes)
* * [misc]simplify:  iters left: 5 (168 enodes)
* * [misc]simplify:  iters left: 4 (420 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ x2 x1) (- x2 x3)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))) (+ (* (+ x4 x3) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2)))))) (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) x3) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* x2 (- x1 x2)))))))) (* (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (* x2 (- x2 x3)) (+ (* (+ x2 x1) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (* (- x1 x2) (+ x2 x1))))) (* (* (* (* (+ x2 x3) x1) (- x2 x3)) (+ x2 x1)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ x2 x1) (- x2 x3)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))) (+ (* (+ x4 x3) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2)))))) (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) x3) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* x2 (- x1 x2)))))))) (* (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (* x2 (- x2 x3)) (+ (* (+ x2 x1) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (* (- x1 x2) (+ x2 x1))))) (* (* (* (* (+ x2 x3) x1) (- x2 x3)) (+ x2 x1)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (83 enodes)
* * [misc]simplify:  iters left: 4 (222 enodes)
* [exit]simplify:  Simplified to (* (* (* (* (+ x2 x1) (- x2 x3)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4)))) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2))))) (* (+ x3 x4) (+ (* x2 x2) (* (- x1 x2) x1))))
* [exit]simplify:  Simplified to (* (* (* (* (+ x2 x1) (- x2 x3)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4)))) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2))))) (* (+ x3 x4) (+ (* x2 x2) (* (- x1 x2) x1))))
* * * * [misc]progress:  [ 43 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (62 enodes)
* * [misc]simplify:  iters left: 5 (180 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3)))) (+ (* (+ x4 x3) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))) x3))) (* (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (+ x2 x1) (- (sqr (+ x4 x3)) (sqr (* x4 x3)))) (* (* (- x1 x2) (+ x2 x1)) (+ (* x4 x3) (+ x4 x3))))) x2) (* (* (+ (cube x3) (cube x2)) x1) (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3))))) (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3)))) (+ (* (+ x4 x3) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))) x3))) (* (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (+ x2 x1) (- (sqr (+ x4 x3)) (sqr (* x4 x3)))) (* (* (- x1 x2) (+ x2 x1)) (+ (* x4 x3) (+ x4 x3))))) x2) (* (* (+ (cube x3) (cube x2)) x1) (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3))))) (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (85 enodes)
* * [misc]simplify:  iters left: 4 (248 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ x2 x1) (+ (+ x3 x4) (* x4 x3))) (- (* x3 x3) (* x2 (- x3 x2)))) (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))))
* [exit]simplify:  Simplified to (* (* (* (+ x2 x1) (+ (+ x3 x4) (* x4 x3))) (- (* x3 x3) (* x2 (- x3 x2)))) (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))))
* * * * [misc]progress:  [ 44 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (59 enodes)
* * [misc]simplify:  iters left: 5 (161 enodes)
* * [misc]simplify:  iters left: 4 (422 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ x2 x1)) (+ (* x4 x3) (+ x4 x3))) (+ (* (* (* (* x1 x4) (+ x4 x3)) (- (sqr x1) (* x2 (- x1 x2)))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* x3 (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* x2 (- x1 x2))))))))) (* (- (* (* x2 (- x2 x3)) (* (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3))) (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (* (* x1 (* (- x2 x3) (+ x2 x3))) (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3))))) (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))))))
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ x2 x1)) (+ (* x4 x3) (+ x4 x3))) (+ (* (* (* (* x1 x4) (+ x4 x3)) (- (sqr x1) (* x2 (- x1 x2)))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* x3 (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* x2 (- x1 x2))))))))) (* (- (* (* x2 (- x2 x3)) (* (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3))) (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (* (* x1 (* (- x2 x3) (+ x2 x3))) (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3))))) (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (71 enodes)
* * [misc]simplify:  iters left: 4 (203 enodes)
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- (+ (- x3 x4) (- x1)) x2))) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))) (* (* (- x2 x3) (+ x2 x1)) (+ (+ x3 x4) (* x4 x3))))
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- (+ (- x3 x4) (- x1)) x2))) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))) (* (* (- x2 x3) (+ x2 x1)) (+ (+ x3 x4) (* x4 x3))))
* * * * [misc]progress:  [ 45 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (62 enodes)
* * [misc]simplify:  iters left: 5 (164 enodes)
* * [misc]simplify:  iters left: 4 (425 enodes)
* [exit]simplify:  Simplified to (+ (* (* (- (+ (* (- x1 x2) (- x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3)))) (* (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (+ (* (- x3 x2) x3) (* x2 x2))) (+ (* (* (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2)))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ x4 x3)) (* (* x3 (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* x2 (- x1 x2)))))))) (* (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (* x2 (+ (* (- x3 x2) x3) (* x2 x2))) (+ (cube (- (+ x4 x3) (* x4 x3))) (cube (- x1 x2)))) (* (* (+ (cube x3) (cube x2)) x1) (- (+ (* (- x1 x2) (- x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3)))) (* (- (+ x4 x3) (* x4 x3)) (- x1 x2)))))))
* [exit]simplify:  Simplified to (+ (* (* (- (+ (* (- x1 x2) (- x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3)))) (* (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (+ (* (- x3 x2) x3) (* x2 x2))) (+ (* (* (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2)))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ x4 x3)) (* (* x3 (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* x2 (- x1 x2)))))))) (* (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (* x2 (+ (* (- x3 x2) x3) (* x2 x2))) (+ (cube (- (+ x4 x3) (* x4 x3))) (cube (- x1 x2)))) (* (* (+ (cube x3) (cube x2)) x1) (- (+ (* (- x1 x2) (- x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3)))) (* (- (+ x4 x3) (* x4 x3)) (- x1 x2)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (86 enodes)
* * [misc]simplify:  iters left: 4 (235 enodes)
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (* (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2)))) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- x1 x2)))))
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (* (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2)))) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- x1 x2)))))
* * * * [misc]progress:  [ 46 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (59 enodes)
* * [misc]simplify:  iters left: 5 (145 enodes)
* * [misc]simplify:  iters left: 4 (330 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))) (- (* (* x2 (- x2 x3)) (+ (cube (- (+ x4 x3) (* x4 x3))) (cube (- x1 x2)))) (* (* x1 (- (* x2 x2) (* x3 x3))) (+ (* (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)) (- (+ x4 x3) (* x4 x3))) (* (- x1 x2) (- x1 x2)))))) (* (+ (* (* (- x2 x3) (- (+ x4 x3) (* x4 x3))) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (- x2 x3) (* (- x1 x2) (- x1 x2)))) (+ (* (+ x4 x3) (* (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2)))) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))) (* x3 (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* x2 (- x1 x2))))))))))
* [exit]simplify:  Simplified to (+ (* (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))) (- (* (* x2 (- x2 x3)) (+ (cube (- (+ x4 x3) (* x4 x3))) (cube (- x1 x2)))) (* (* x1 (- (* x2 x2) (* x3 x3))) (+ (* (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)) (- (+ x4 x3) (* x4 x3))) (* (- x1 x2) (- x1 x2)))))) (* (+ (* (* (- x2 x3) (- (+ x4 x3) (* x4 x3))) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (- x2 x3) (* (- x1 x2) (- x1 x2)))) (+ (* (+ x4 x3) (* (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2)))) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))) (* x3 (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* x2 (- x1 x2))))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (72 enodes)
* * [misc]simplify:  iters left: 4 (184 enodes)
* * [misc]simplify:  iters left: 3 (478 enodes)
* [exit]simplify:  Simplified to (* (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (- (* x1 x1) (* x2 (- x1 x2))) (* (- x2 x3) (+ x3 x4)))) (+ (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (- x1 x2) (- x1 x2))))
* [exit]simplify:  Simplified to (* (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (- (* x1 x1) (* x2 (- x1 x2))) (* (- x2 x3) (+ x3 x4)))) (+ (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (- x1 x2) (- x1 x2))))
* * * * [misc]progress:  [ 47 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (58 enodes)
* * [misc]simplify:  iters left: 5 (153 enodes)
* * [misc]simplify:  iters left: 4 (387 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))) (- (* (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3)))) x2) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (* x1 (+ (cube x3) (cube x2))) (+ (- (- x1 x2) (+ x4 x3)) (* x4 x3))))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (- (- x1 x2) (+ x4 x3)) (* x4 x3))) (+ (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))) (* (* x3 (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* x2 (- x1 x2)))))))))
* [exit]simplify:  Simplified to (+ (* (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))) (- (* (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3)))) x2) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (* x1 (+ (cube x3) (cube x2))) (+ (- (- x1 x2) (+ x4 x3)) (* x4 x3))))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (- (- x1 x2) (+ x4 x3)) (* x4 x3))) (+ (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))) (* (* x3 (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* x2 (- x1 x2)))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (80 enodes)
* * [misc]simplify:  iters left: 4 (199 enodes)
* [exit]simplify:  Simplified to (* (* (* (- (- (- x1 x2) x3) (- x4 (* x4 x3))) (- (* x3 x3) (* x2 (- x3 x2)))) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* [exit]simplify:  Simplified to (* (* (* (- (- (- x1 x2) x3) (- x4 (* x4 x3))) (- (* x3 x3) (* x2 (- x3 x2)))) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* * * * [misc]progress:  [ 48 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (55 enodes)
* * [misc]simplify:  iters left: 5 (134 enodes)
* * [misc]simplify:  iters left: 4 (319 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))) (- (* (* (- x2 x3) x2) (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3))))) (* (- (- x1 (+ x2 x4)) (- x3 (* x4 x3))) (* x1 (- (* x2 x2) (* x3 x3)))))) (* (* (- x2 x3) (- (- x1 (+ x2 x4)) (- x3 (* x4 x3)))) (+ (* (+ x4 x3) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2)))))) (* (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* x2 (- x1 x2)))))) x3))))
* [exit]simplify:  Simplified to (+ (* (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))) (- (* (* (- x2 x3) x2) (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3))))) (* (- (- x1 (+ x2 x4)) (- x3 (* x4 x3))) (* x1 (- (* x2 x2) (* x3 x3)))))) (* (* (- x2 x3) (- (- x1 (+ x2 x4)) (- x3 (* x4 x3)))) (+ (* (+ x4 x3) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2)))))) (* (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* x2 (- x1 x2)))))) x3))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (66 enodes)
* * [misc]simplify:  iters left: 4 (162 enodes)
* * [misc]simplify:  iters left: 3 (415 enodes)
* [exit]simplify:  Simplified to (* (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))) (* (- x2 x3) (- (- (- x1 x2) x4) (- x3 (* x4 x3)))))
* [exit]simplify:  Simplified to (* (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))) (* (- x2 x3) (- (- (- x1 x2) x4) (- x3 (* x4 x3)))))
* * * * [misc]progress:  [ 49 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3)))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3))))
* * [misc]simplify:  iters left: 6 (55 enodes)
* * [misc]simplify:  iters left: 5 (149 enodes)
* * [misc]simplify:  iters left: 4 (377 enodes)
* [exit]simplify:  Simplified to (+ (* (- (cube (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))))) (cube (* x1 (+ x2 x3)))) (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))))) (* (+ (+ (sqr (* x1 (+ x2 x3))) (* (* (* x1 (+ x2 x3)) x2) (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))))) (* (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3)))) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3)))))) (+ (* (* (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ x4 x3)) (* (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))) x3))))
* [exit]simplify:  Simplified to (+ (* (- (cube (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))))) (cube (* x1 (+ x2 x3)))) (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))))) (* (+ (+ (sqr (* x1 (+ x2 x3))) (* (* (* x1 (+ x2 x3)) x2) (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))))) (* (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3)))) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3)))))) (+ (* (* (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ x4 x3)) (* (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))) x3))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (32 enodes)
* * [misc]simplify:  iters left: 5 (97 enodes)
* * [misc]simplify:  iters left: 4 (248 enodes)
* [exit]simplify:  Simplified to (* (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (+ (* (* (+ x3 x2) x1) (* (+ x3 x2) x1)) (* (* (* (+ x3 x2) x1) x2) (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))))) (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))
* [exit]simplify:  Simplified to (* (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (+ (* (* (+ x3 x2) x1) (* (+ x3 x2) x1)) (* (* (* (+ x3 x2) x1) x2) (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))))) (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))
* * * * [misc]progress:  [ 50 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (51 enodes)
* * [misc]simplify:  iters left: 5 (141 enodes)
* * [misc]simplify:  iters left: 4 (357 enodes)
* [exit]simplify:  Simplified to (+ (+ (* (* (* (- (sqr x1) (* (- x1 x2) x2)) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))) (- (* (* x2 (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* x2 (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (sqr (* (+ x2 x3) x1)))) (* (* (* (* (* x1 x4) (+ x4 x3)) (- (sqr x1) (* (- x1 x2) x2))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (* x2 (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (+ x2 x3) x1)))) (* (* (* x3 (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* (- x1 x2) x2))))) (+ (* x2 (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (+ x2 x3) x1))))
* [exit]simplify:  Simplified to (+ (+ (* (* (* (- (sqr x1) (* (- x1 x2) x2)) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))) (- (* (* x2 (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* x2 (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (sqr (* (+ x2 x3) x1)))) (* (* (* (* (* x1 x4) (+ x4 x3)) (- (sqr x1) (* (- x1 x2) x2))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (* x2 (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (+ x2 x3) x1)))) (* (* (* x3 (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* (- x1 x2) x2))))) (+ (* x2 (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (+ x2 x3) x1))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (28 enodes)
* * [misc]simplify:  iters left: 5 (83 enodes)
* * [misc]simplify:  iters left: 4 (200 enodes)
* [exit]simplify:  Simplified to (* (+ (* (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (* x2 x2)) (* (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* (+ (- x3 x4) (- x1)) x2)))) (+ (* (+ x3 x2) x1) (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))))
* [exit]simplify:  Simplified to (* (+ (* (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (* x2 x2)) (* (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* (+ (- x3 x4) (- x1)) x2)))) (+ (* (+ x3 x2) x1) (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))))
* * * * [misc]progress:  [ 51 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (69 enodes)
* * [misc]simplify:  iters left: 5 (191 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3))))) (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* x2 (- (cube (+ x4 x3)) (cube (* x4 x3)))) (+ (sqr x1) (* x2 (+ x2 x1)))) (* (* x2 (- (cube x1) (cube x2))) (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))))) (* (* (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (* (+ (sqr x1) (* x2 (+ x2 x1))) (+ (cube x3) (cube x2)))) x1))) (* (+ (* (* (- (* (* (+ x2 x1) (- x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (- x2 x1) (- (cube x3) (cube x4)))) x3) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)))) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- x2 x1))) (+ (* x3 x3) (* x4 (+ x4 x3))))) (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))) (+ (sqr x1) (* x2 (+ x2 x1))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3))))) (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* x2 (- (cube (+ x4 x3)) (cube (* x4 x3)))) (+ (sqr x1) (* x2 (+ x2 x1)))) (* (* x2 (- (cube x1) (cube x2))) (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))))) (* (* (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (* (+ (sqr x1) (* x2 (+ x2 x1))) (+ (cube x3) (cube x2)))) x1))) (* (+ (* (* (- (* (* (+ x2 x1) (- x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (- x2 x1) (- (cube x3) (cube x4)))) x3) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)))) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- x2 x1))) (+ (* x3 x3) (* x4 (+ x4 x3))))) (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))) (+ (sqr x1) (* x2 (+ x2 x1))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (36 enodes)
* * [misc]simplify:  iters left: 5 (101 enodes)
* * [misc]simplify:  iters left: 4 (276 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 (+ x3 x4)) (* x4 x4)) (- x2 x1)) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- (+ (- x3 x4) (- x1)) x2)))) (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 (+ x3 x4)) (* x4 x4)) (- x2 x1)) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- (+ (- x3 x4) (- x1)) x2)))) (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))))
* * * * [misc]progress:  [ 52 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (67 enodes)
* * [misc]simplify:  iters left: 5 (174 enodes)
* * [misc]simplify:  iters left: 4 (421 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (- x2 x3)) (+ (* (+ (sqr x1) (* (+ x2 x1) x2)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (- (cube x1) (cube x2))))) (* (* (* (- x2 x3) (* x1 (+ x2 x3))) (+ (sqr x1) (* (+ x2 x1) x2))) (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))))) (* (+ (* x2 x2) (* (+ (- x1) (- (- x3 x4) x2)) (+ (- x3 x4) (- x1)))) (* (- x2 x1) (+ (* (+ x4 x3) x3) (* x4 x4))))) (* (* (* (- x2 x3) (+ (sqr x1) (* (+ x2 x1) x2))) (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))) (+ (* (* (+ (* x2 x2) (* (+ (- x1) (- (- x3 x4) x2)) (+ (- x3 x4) (- x1)))) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* (+ x4 x3) x3) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) x3) (* (* (* (* x1 x4) (- x2 x1)) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (* (+ x4 x3) x3) (* x4 x4))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (- x2 x3)) (+ (* (+ (sqr x1) (* (+ x2 x1) x2)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (- (cube x1) (cube x2))))) (* (* (* (- x2 x3) (* x1 (+ x2 x3))) (+ (sqr x1) (* (+ x2 x1) x2))) (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))))) (* (+ (* x2 x2) (* (+ (- x1) (- (- x3 x4) x2)) (+ (- x3 x4) (- x1)))) (* (- x2 x1) (+ (* (+ x4 x3) x3) (* x4 x4))))) (* (* (* (- x2 x3) (+ (sqr x1) (* (+ x2 x1) x2))) (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))) (+ (* (* (+ (* x2 x2) (* (+ (- x1) (- (- x3 x4) x2)) (+ (- x3 x4) (- x1)))) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* (+ x4 x3) x3) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) x3) (* (* (* (* x1 x4) (- x2 x1)) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (* (+ x4 x3) x3) (* x4 x4))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (34 enodes)
* * [misc]simplify:  iters left: 5 (89 enodes)
* * [misc]simplify:  iters left: 4 (233 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (- x2 x3)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1)) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (- x2 x3)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1)) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2))))
* * * * [misc]progress:  [ 53 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (65 enodes)
* * [misc]simplify:  iters left: 5 (184 enodes)
* * [misc]simplify:  iters left: 4 (493 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ (+ x4 x3) (* x4 x3)) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (sqr x1) (* x2 (+ x2 x1)))) (+ (* (* x3 (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))))) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* (+ x4 x3) x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (+ (* x3 x3) (* (+ x4 x3) x4)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- x2 x1)))))) (* (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* (- x2 x1) (+ (* x3 x3) (* (+ x4 x3) x4)))) (- (* (+ (* (- (cube x1) (cube x2)) (+ (+ x4 x3) (* x4 x3))) (* (- (* (+ x4 x3) (+ x4 x3)) (sqr (* x4 x3))) (+ (sqr x1) (* x2 (+ x2 x1))))) (+ (* x3 (* (- x3 x2) x2)) (cube x2))) (* (* (+ (sqr x1) (* x2 (+ x2 x1))) (* x1 (+ (cube x3) (cube x2)))) (+ (+ x4 x3) (* x4 x3))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ (+ x4 x3) (* x4 x3)) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (sqr x1) (* x2 (+ x2 x1)))) (+ (* (* x3 (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))))) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* (+ x4 x3) x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (+ (* x3 x3) (* (+ x4 x3) x4)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- x2 x1)))))) (* (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* (- x2 x1) (+ (* x3 x3) (* (+ x4 x3) x4)))) (- (* (+ (* (- (cube x1) (cube x2)) (+ (+ x4 x3) (* x4 x3))) (* (- (* (+ x4 x3) (+ x4 x3)) (sqr (* x4 x3))) (+ (sqr x1) (* x2 (+ x2 x1))))) (+ (* x3 (* (- x3 x2) x2)) (cube x2))) (* (* (+ (sqr x1) (* x2 (+ x2 x1))) (* x1 (+ (cube x3) (cube x2)))) (+ (+ x4 x3) (* x4 x3))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (32 enodes)
* * [misc]simplify:  iters left: 5 (91 enodes)
* * [misc]simplify:  iters left: 4 (271 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (* (+ (* x4 x3) (+ x3 x4)) (+ (* (- x3 x2) x3) (* x2 x2)))) (* (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1)) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2))))
* [exit]simplify:  Simplified to (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (* (+ (* x4 x3) (+ x3 x4)) (+ (* (- x3 x2) x3) (* x2 x2)))) (* (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1)) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2))))
* * * * [misc]progress:  [ 54 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (63 enodes)
* * [misc]simplify:  iters left: 5 (167 enodes)
* * [misc]simplify:  iters left: 4 (416 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (sqr x1) (* x2 (+ x2 x1))) (* (- x2 x3) (+ (+ x4 x3) (* x4 x3)))) (+ (* (* (+ (* x2 x2) (* (+ (- x1) (- (- x3 x4) x2)) (+ (- x3 x4) (- x1)))) x3) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* (+ x4 x3) x3) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (- x2 x1) (+ (* (+ x4 x3) x3) (* x4 x4))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))) (* (* (+ (* x2 x2) (* (+ (- x1) (- (- x3 x4) x2)) (+ (- x3 x4) (- x1)))) (* (- x2 x1) (+ (* (+ x4 x3) x3) (* x4 x4)))) (- (* (* x2 (- x2 x3)) (+ (* (- (* (+ x4 x3) (+ x4 x3)) (sqr (* x4 x3))) (+ (sqr x1) (* x2 (+ x2 x1)))) (* (+ (+ x4 x3) (* x4 x3)) (- (cube x1) (cube x2))))) (* (* (+ (sqr x1) (* x2 (+ x2 x1))) (* (+ (+ x4 x3) (* x4 x3)) (* (+ x2 x3) (- x2 x3)))) x1))))
* [exit]simplify:  Simplified to (+ (* (* (+ (sqr x1) (* x2 (+ x2 x1))) (* (- x2 x3) (+ (+ x4 x3) (* x4 x3)))) (+ (* (* (+ (* x2 x2) (* (+ (- x1) (- (- x3 x4) x2)) (+ (- x3 x4) (- x1)))) x3) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* (+ x4 x3) x3) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (- x2 x1) (+ (* (+ x4 x3) x3) (* x4 x4))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))) (* (* (+ (* x2 x2) (* (+ (- x1) (- (- x3 x4) x2)) (+ (- x3 x4) (- x1)))) (* (- x2 x1) (+ (* (+ x4 x3) x3) (* x4 x4)))) (- (* (* x2 (- x2 x3)) (+ (* (- (* (+ x4 x3) (+ x4 x3)) (sqr (* x4 x3))) (+ (sqr x1) (* x2 (+ x2 x1)))) (* (+ (+ x4 x3) (* x4 x3)) (- (cube x1) (cube x2))))) (* (* (+ (sqr x1) (* x2 (+ x2 x1))) (* (+ (+ x4 x3) (* x4 x3)) (* (+ x2 x3) (- x2 x3)))) x1))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (79 enodes)
* * [misc]simplify:  iters left: 4 (207 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (* (+ (* x4 x3) (+ x3 x4)) (- x2 x3))) (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (* (+ (* x4 x3) (+ x3 x4)) (- x2 x3))) (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* * * * [misc]progress:  [ 55 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (66 enodes)
* * [misc]simplify:  iters left: 5 (185 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3))))) (- (* (+ (* (* x2 (- (sqr x1) (* x2 x2))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))) (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3))))) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (* (+ x2 x1) (* (+ (cube x3) (cube x2)) x1))))) (* (* (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (+ x2 x1)) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (* (- (* (* (+ x2 x1) (- x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (- x2 x1) (- (cube x3) (cube x4)))) x3) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)))) (* (+ (* x3 x3) (* x4 (+ x4 x3))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- x2 x1)))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3))))) (- (* (+ (* (* x2 (- (sqr x1) (* x2 x2))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))) (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3))))) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (* (+ x2 x1) (* (+ (cube x3) (cube x2)) x1))))) (* (* (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (+ x2 x1)) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (* (- (* (* (+ x2 x1) (- x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (- x2 x1) (- (cube x3) (cube x4)))) x3) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)))) (* (+ (* x3 x3) (* x4 (+ x4 x3))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- x2 x1)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (94 enodes)
* * [misc]simplify:  iters left: 4 (262 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2))) (* (* (- (* x3 x3) (* x2 (- x3 x2))) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2))) (* (* (- (* x3 x3) (* x2 (- x3 x2))) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4)))))
* * * * [misc]progress:  [ 56 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (64 enodes)
* * [misc]simplify:  iters left: 5 (168 enodes)
* * [misc]simplify:  iters left: 4 (371 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3)))) (+ (* (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2)))) x3) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 (+ x4 x3)) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (- x2 x1) (+ (* x3 (+ x4 x3)) (* x4 x4))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))) (* (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2)))) (* (- x2 x1) (+ (* x3 (+ x4 x3)) (* x4 x4)))) (- (* (* x2 (- x2 x3)) (+ (* (+ x2 x1) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (- (sqr x1) (* x2 x2)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3)))))) (* (* (* (* x1 (+ x2 x3)) (- x2 x3)) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3)))))))
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3)))) (+ (* (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2)))) x3) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 (+ x4 x3)) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (- x2 x1) (+ (* x3 (+ x4 x3)) (* x4 x4))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))) (* (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2)))) (* (- x2 x1) (+ (* x3 (+ x4 x3)) (* x4 x4)))) (- (* (* x2 (- x2 x3)) (+ (* (+ x2 x1) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (- (sqr x1) (* x2 x2)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3)))))) (* (* (* (* x1 (+ x2 x3)) (- x2 x3)) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (31 enodes)
* * [misc]simplify:  iters left: 5 (82 enodes)
* * [misc]simplify:  iters left: 4 (204 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2))) (* (* (- x2 x3) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2))) (* (* (- x2 x3) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4)))))
* * * * [misc]progress:  [ 57 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (62 enodes)
* * [misc]simplify:  iters left: 5 (178 enodes)
* * [misc]simplify:  iters left: 4 (474 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 x2) (* (- x3 x2) x3)) (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1))) (+ (* (* x3 (+ (* x2 x2) (* (+ (- x1) (- (- x3 x4) x2)) (+ (- x3 x4) (- x1))))) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* (* x1 x4) (- x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3))))))) (* (* (+ (* x2 x2) (* (+ (- x1) (- (- x3 x4) x2)) (+ (- x3 x4) (- x1)))) (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3))))) (- (* (* x2 (+ (* x2 x2) (* (- x3 x2) x3))) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))))) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (* (+ (cube x3) (cube x2)) x1)))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 x2) (* (- x3 x2) x3)) (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1))) (+ (* (* x3 (+ (* x2 x2) (* (+ (- x1) (- (- x3 x4) x2)) (+ (- x3 x4) (- x1))))) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* (* x1 x4) (- x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3))))))) (* (* (+ (* x2 x2) (* (+ (- x1) (- (- x3 x4) x2)) (+ (- x3 x4) (- x1)))) (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3))))) (- (* (* x2 (+ (* x2 x2) (* (- x3 x2) x3))) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))))) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (* (+ (cube x3) (cube x2)) x1)))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (84 enodes)
* * [misc]simplify:  iters left: 4 (233 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (+ (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) (* (- (* x3 x3) (* x2 (- x3 x2))) (* (+ (* x4 x3) (+ x3 x4)) (+ x2 x1))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (+ (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) (* (- (* x3 x3) (* x2 (- x3 x2))) (* (+ (* x4 x3) (+ x3 x4)) (+ x2 x1))))
* * * * [misc]progress:  [ 58 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (60 enodes)
* * [misc]simplify:  iters left: 5 (161 enodes)
* * [misc]simplify:  iters left: 4 (379 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ x2 x1)) (+ (+ x4 x3) (* x4 x3))) (+ (* (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2)))) x3) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- x2 x1))) (+ (* x3 x3) (* x4 (+ x4 x3)))))) (* (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2)))) (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3))))) (- (* (* (- x2 x3) x2) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))))) (* (* (* (+ x2 x3) x1) (- x2 x3)) (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1))))))
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ x2 x1)) (+ (+ x4 x3) (* x4 x3))) (+ (* (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2)))) x3) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- x2 x1))) (+ (* x3 x3) (* x4 (+ x4 x3)))))) (* (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2)))) (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3))))) (- (* (* (- x2 x3) x2) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))))) (* (* (* (+ x2 x3) x1) (- x2 x3)) (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (72 enodes)
* * [misc]simplify:  iters left: 4 (184 enodes)
* * [misc]simplify:  iters left: 3 (472 enodes)
* [exit]simplify:  Simplified to (* (* (* (* (+ (* x4 x3) (+ x3 x4)) (* (+ x2 x1) (- x2 x3))) (+ (* x3 (+ x3 x4)) (* x4 x4))) (- x2 x1)) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* [exit]simplify:  Simplified to (* (* (* (* (+ (* x4 x3) (+ x3 x4)) (* (+ x2 x1) (- x2 x3))) (+ (* x3 (+ x3 x4)) (* x4 x4))) (- x2 x1)) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* * * * [misc]progress:  [ 59 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (62 enodes)
* * [misc]simplify:  iters left: 5 (163 enodes)
* * [misc]simplify:  iters left: 4 (402 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 x2) (* (+ (- x1) (- (- x3 x4) x2)) (+ (- x3 x4) (- x1)))) (* (- x2 x1) (+ (* x3 x3) (* (+ x4 x3) x4)))) (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) x2) (+ (cube (- (+ x4 x3) (* x4 x3))) (cube (- x1 x2)))) (* (+ (* (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)) (- (+ x4 x3) (* x4 x3))) (sqr (- x1 x2))) (* (+ (cube x3) (cube x2)) x1)))) (* (* (+ (* (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)) (- (+ x4 x3) (* x4 x3))) (sqr (- x1 x2))) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (* (+ (* x2 x2) (* (+ (- x1) (- (- x3 x4) x2)) (+ (- x3 x4) (- x1)))) x3) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* x3 x3) (* (+ x4 x3) x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* (* x1 x4) (- x2 x1)) (+ (* x3 x3) (* (+ x4 x3) x4)))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 x2) (* (+ (- x1) (- (- x3 x4) x2)) (+ (- x3 x4) (- x1)))) (* (- x2 x1) (+ (* x3 x3) (* (+ x4 x3) x4)))) (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) x2) (+ (cube (- (+ x4 x3) (* x4 x3))) (cube (- x1 x2)))) (* (+ (* (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)) (- (+ x4 x3) (* x4 x3))) (sqr (- x1 x2))) (* (+ (cube x3) (cube x2)) x1)))) (* (* (+ (* (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)) (- (+ x4 x3) (* x4 x3))) (sqr (- x1 x2))) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (* (+ (* x2 x2) (* (+ (- x1) (- (- x3 x4) x2)) (+ (- x3 x4) (- x1)))) x3) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* x3 x3) (* (+ x4 x3) x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* (* x1 x4) (- x2 x1)) (+ (* x3 x3) (* (+ x4 x3) x4)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (85 enodes)
* * [misc]simplify:  iters left: 4 (221 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2))) (* (+ (* (- x1 x2) (- x1 x2)) (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3)))) (+ (* x3 (- x3 x2)) (* x2 x2))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2))) (* (+ (* (- x1 x2) (- x1 x2)) (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3)))) (+ (* x3 (- x3 x2)) (* x2 x2))))
* * * * [misc]progress:  [ 60 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (60 enodes)
* * [misc]simplify:  iters left: 5 (146 enodes)
* * [misc]simplify:  iters left: 4 (286 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- x2 x3) (- (+ x4 x3) (* x4 x3))) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (- x2 x3) (sqr (- x1 x2)))) (+ (* (* (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* (+ x4 x3) x4))) (* (- x2 x1) (- (cube x3) (cube x4)))) x3) (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))))) (* (* (* (* x1 x4) (- x2 x1)) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (* x3 x3) (* (+ x4 x3) x4))))) (* (- (* (* x2 (- x2 x3)) (+ (cube (- (+ x4 x3) (* x4 x3))) (cube (- x1 x2)))) (* (* (- x2 x3) (* (+ x2 x3) x1)) (+ (* (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)) (- (+ x4 x3) (* x4 x3))) (sqr (- x1 x2))))) (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* (- x2 x1) (+ (* x3 x3) (* (+ x4 x3) x4))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- x2 x3) (- (+ x4 x3) (* x4 x3))) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (- x2 x3) (sqr (- x1 x2)))) (+ (* (* (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* (+ x4 x3) x4))) (* (- x2 x1) (- (cube x3) (cube x4)))) x3) (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))))) (* (* (* (* x1 x4) (- x2 x1)) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (* x3 x3) (* (+ x4 x3) x4))))) (* (- (* (* x2 (- x2 x3)) (+ (cube (- (+ x4 x3) (* x4 x3))) (cube (- x1 x2)))) (* (* (- x2 x3) (* (+ x2 x3) x1)) (+ (* (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)) (- (+ x4 x3) (* x4 x3))) (sqr (- x1 x2))))) (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* (- x2 x1) (+ (* x3 x3) (* (+ x4 x3) x4))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (31 enodes)
* * [misc]simplify:  iters left: 5 (73 enodes)
* * [misc]simplify:  iters left: 4 (170 enodes)
* * [misc]simplify:  iters left: 3 (445 enodes)
* [exit]simplify:  Simplified to (* (+ (* (- x1 x2) (- x1 x2)) (- (sqr (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* (- x2 x3) (* (+ (* x3 (+ x3 x4)) (* x4 x4)) (- x2 x1))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2))))
* [exit]simplify:  Simplified to (* (+ (* (- x1 x2) (- x1 x2)) (- (sqr (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* (- x2 x3) (* (+ (* x3 (+ x3 x4)) (* x4 x4)) (- x2 x1))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2))))
* * * * [misc]progress:  [ 61 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (58 enodes)
* * [misc]simplify:  iters left: 5 (152 enodes)
* * [misc]simplify:  iters left: 4 (352 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 x2) (* (- x3 x2) x3)) (- (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (+ (* (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2)))) x3) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (+ (* x3 x3) (* x4 (+ x4 x3))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- x2 x1)))))) (* (- (* (* (- (sqr (- x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3)))) (+ (* x2 x2) (* (- x3 x2) x3))) x2) (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (* x1 (+ (cube x3) (cube x2))))) (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2)))) (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3)))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 x2) (* (- x3 x2) x3)) (- (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (+ (* (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2)))) x3) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (+ (* x3 x3) (* x4 (+ x4 x3))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- x2 x1)))))) (* (- (* (* (- (sqr (- x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3)))) (+ (* x2 x2) (* (- x3 x2) x3))) x2) (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (* x1 (+ (cube x3) (cube x2))))) (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2)))) (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (79 enodes)
* * [misc]simplify:  iters left: 4 (185 enodes)
* * [misc]simplify:  iters left: 3 (474 enodes)
* [exit]simplify:  Simplified to (* (* (* (- (* x3 x3) (* (- x3 x2) x2)) (- (- (- x1 x2) x4) (- x3 (* x4 x3)))) (* (+ (* x3 (+ x3 x4)) (* x4 x4)) (- x2 x1))) (+ (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* (+ (- x3 x4) (- x1)) x2)) (* x2 x2)))
* [exit]simplify:  Simplified to (* (* (* (- (* x3 x3) (* (- x3 x2) x2)) (- (- (- x1 x2) x4) (- x3 (* x4 x3)))) (* (+ (* x3 (+ x3 x4)) (* x4 x4)) (- x2 x1))) (+ (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* (+ (- x3 x4) (- x1)) x2)) (* x2 x2)))
* * * * [misc]progress:  [ 62 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (135 enodes)
* * [misc]simplify:  iters left: 4 (287 enodes)
* [exit]simplify:  Simplified to (+ (* (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (- x2 x3)) (+ (* x3 (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2)))) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (- x2 x1) (- (cube x3) (cube x4)))))) (* (+ (* x3 x3) (* x4 (+ x4 x3))) (* (* (* x1 x4) (- x2 x1)) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))) (* (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2)))) (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3))))) (- (* (* (- x2 x3) x2) (- (sqr (- x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3))))) (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (* (* x1 (+ x2 x3)) (- x2 x3))))))
* [exit]simplify:  Simplified to (+ (* (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (- x2 x3)) (+ (* x3 (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2)))) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (- x2 x1) (- (cube x3) (cube x4)))))) (* (+ (* x3 x3) (* x4 (+ x4 x3))) (* (* (* x1 x4) (- x2 x1)) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))) (* (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2)))) (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3))))) (- (* (* (- x2 x3) x2) (- (sqr (- x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3))))) (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (* (* x1 (+ x2 x3)) (- x2 x3))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (67 enodes)
* * [misc]simplify:  iters left: 4 (150 enodes)
* * [misc]simplify:  iters left: 3 (365 enodes)
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (* (+ (* x4 x3) (- (- x1 x2) (+ x3 x4))) (- x2 x3)) (* (+ (* x3 (+ x3 x4)) (* x4 x4)) (- x2 x1))))
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (* (+ (* x4 x3) (- (- x1 x2) (+ x3 x4))) (- x2 x3)) (* (+ (* x3 (+ x3 x4)) (* x4 x4)) (- x2 x1))))
* * * * [misc]progress:  [ 63 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3)))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (150 enodes)
* * [misc]simplify:  iters left: 4 (348 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (+ (sqr (* (+ x2 x3) x1)) (* (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))) (* (* x1 x2) (+ x2 x3)))) (* (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))))) (+ (* (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (- x2 x1) (- (cube x3) (cube x4))))) x3) (* (+ (* x3 x3) (* x4 (+ x4 x3))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- x2 x1)))))) (* (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3))))) (- (cube (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))))) (cube (* (+ x2 x3) x1)))))
* [exit]simplify:  Simplified to (+ (* (+ (+ (sqr (* (+ x2 x3) x1)) (* (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))) (* (* x1 x2) (+ x2 x3)))) (* (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))))) (+ (* (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (- x2 x1) (- (cube x3) (cube x4))))) x3) (* (+ (* x3 x3) (* x4 (+ x4 x3))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- x2 x1)))))) (* (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3))))) (- (cube (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))))) (cube (* (+ x2 x3) x1)))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (99 enodes)
* * [misc]simplify:  iters left: 4 (246 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- (+ (- x3 x4) (- x1)) x2)))) (+ (* (* x2 (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3))) (* x2 (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3)))) (+ (* (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3)) (* (* x2 x1) (+ x3 x2))) (* (* (+ x3 x2) x1) (* (+ x3 x2) x1)))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- (+ (- x3 x4) (- x1)) x2)))) (+ (* (* x2 (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3))) (* x2 (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3)))) (+ (* (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3)) (* (* x2 x1) (+ x3 x2))) (* (* (+ x3 x2) x1) (* (+ x3 x2) x1)))))
* * * * [misc]progress:  [ 64 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (142 enodes)
* * [misc]simplify:  iters left: 4 (317 enodes)
* [exit]simplify:  Simplified to (+ (+ (* (- (* (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))))) (sqr (* x1 (+ x2 x3)))) (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3)))))) (* (* (+ (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* x1 (+ x2 x3))) (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))))) (* (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (- x2 x1) (- (cube x3) (cube x4)))) x3))) (* (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* x1 (+ x2 x3))))))
* [exit]simplify:  Simplified to (+ (+ (* (- (* (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))))) (sqr (* x1 (+ x2 x3)))) (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3)))))) (* (* (+ (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* x1 (+ x2 x3))) (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))))) (* (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (- x2 x1) (- (cube x3) (cube x4)))) x3))) (* (* (- x2 x1) (+ (* x3 x3) (* x4 (+ x4 x3)))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (* x2 (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* x1 (+ x2 x3))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (84 enodes)
* * [misc]simplify:  iters left: 4 (195 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2))) (+ (* x2 (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (+ x3 x2) x1)))
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2))) (+ (* x2 (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (+ x3 x2) x1)))
* * * * [misc]progress:  [ 65 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (66 enodes)
* * [misc]simplify:  iters left: 5 (185 enodes)
* * [misc]simplify:  iters left: 4 (470 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* (- (cube x1) (cube x2)) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))) (* (+ (sqr x1) (* (+ x2 x1) x2)) (- (cube (+ x4 x3)) (cube (* x4 x3))))) (+ (* x3 (* (- x3 x2) x2)) (cube x2))) (* (* (* (+ (cube x3) (cube x2)) x1) (+ (sqr x1) (* (+ x2 x1) x2))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))))) (* (* (- x2 x1) (+ x4 x3)) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)))) (* (* (* (+ (* (- x3 x2) x3) (* x2 x2)) (+ (sqr x1) (* (+ x2 x1) x2))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))) (+ (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* x3 (* (- x2 x1) (- (* (+ x4 x3) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (- x2 x1) (+ x4 x3)) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))))
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* (- (cube x1) (cube x2)) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))) (* (+ (sqr x1) (* (+ x2 x1) x2)) (- (cube (+ x4 x3)) (cube (* x4 x3))))) (+ (* x3 (* (- x3 x2) x2)) (cube x2))) (* (* (* (+ (cube x3) (cube x2)) x1) (+ (sqr x1) (* (+ x2 x1) x2))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))))) (* (* (- x2 x1) (+ x4 x3)) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)))) (* (* (* (+ (* (- x3 x2) x3) (* x2 x2)) (+ (sqr x1) (* (+ x2 x1) x2))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))) (+ (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* x3 (* (- x2 x1) (- (* (+ x4 x3) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (- x2 x1) (+ x4 x3)) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (95 enodes)
* * [misc]simplify:  iters left: 4 (263 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))) (* (* (+ x3 x4) (- x2 x1)) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2))))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))) (* (* (+ x3 x4) (- x2 x1)) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2))))))
* * * * [misc]progress:  [ 66 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (63 enodes)
* * [misc]simplify:  iters left: 5 (166 enodes)
* * [misc]simplify:  iters left: 4 (387 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (- (* (* (+ x2 x1) (+ x4 x3)) (- x2 x1)) (* (+ x4 x3) (* (- x3 x4) (- x2 x1)))))) (* (* (* x1 x4) (* (- x2 x1) (+ x4 x3))) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))) (* (* (- x2 x3) (+ (sqr x1) (* (+ x2 x1) x2))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3))))) (* (* (* (- x2 x1) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))) (- (* (* (- x2 x3) x2) (+ (* (+ (sqr x1) (* (+ x2 x1) x2)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3))) (- (cube x1) (cube x2))))) (* (* (* (- x2 x3) (* (+ x2 x3) x1)) (+ (sqr x1) (* (+ x2 x1) x2))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3)))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (- (* (* (+ x2 x1) (+ x4 x3)) (- x2 x1)) (* (+ x4 x3) (* (- x3 x4) (- x2 x1)))))) (* (* (* x1 x4) (* (- x2 x1) (+ x4 x3))) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))) (* (* (- x2 x3) (+ (sqr x1) (* (+ x2 x1) x2))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3))))) (* (* (* (- x2 x1) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))) (- (* (* (- x2 x3) x2) (+ (* (+ (sqr x1) (* (+ x2 x1) x2)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3))) (- (cube x1) (cube x2))))) (* (* (* (- x2 x3) (* (+ x2 x3) x1)) (+ (sqr x1) (* (+ x2 x1) x2))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (82 enodes)
* * [misc]simplify:  iters left: 4 (193 enodes)
* [exit]simplify:  Simplified to (* (* (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (- x2 x3)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))) (* (+ x3 x4) (- x2 x1))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* [exit]simplify:  Simplified to (* (* (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (- x2 x3)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))) (* (+ x3 x4) (- x2 x1))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* * * * [misc]progress:  [ 67 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (62 enodes)
* * [misc]simplify:  iters left: 5 (178 enodes)
* * [misc]simplify:  iters left: 4 (497 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* (+ (sqr x1) (* x2 (+ x2 x1))) (- (sqr (+ x4 x3)) (* (* x4 x3) (* x4 x3)))) (* (- (cube x1) (cube x2)) (+ (* x4 x3) (+ x4 x3)))) (+ (* x3 (* (- x3 x2) x2)) (cube x2))) (* (* x1 (+ (* x4 x3) (+ x4 x3))) (* (+ (sqr x1) (* x2 (+ x2 x1))) (+ (cube x3) (cube x2))))) (* (* (- x2 x1) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))) (* x2 x2)))) (* (* (+ (* x2 x2) (* (- x3 x2) x3)) (* (+ (sqr x1) (* x2 (+ x2 x1))) (+ (* x4 x3) (+ x4 x3)))) (+ (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))) (* x2 x2)) (* x3 (* (- x2 x1) (- (* (+ x4 x3) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (* x1 x4) (* (- x2 x1) (+ x4 x3))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))))
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* (+ (sqr x1) (* x2 (+ x2 x1))) (- (sqr (+ x4 x3)) (* (* x4 x3) (* x4 x3)))) (* (- (cube x1) (cube x2)) (+ (* x4 x3) (+ x4 x3)))) (+ (* x3 (* (- x3 x2) x2)) (cube x2))) (* (* x1 (+ (* x4 x3) (+ x4 x3))) (* (+ (sqr x1) (* x2 (+ x2 x1))) (+ (cube x3) (cube x2))))) (* (* (- x2 x1) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))) (* x2 x2)))) (* (* (+ (* x2 x2) (* (- x3 x2) x3)) (* (+ (sqr x1) (* x2 (+ x2 x1))) (+ (* x4 x3) (+ x4 x3)))) (+ (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))) (* x2 x2)) (* x3 (* (- x2 x1) (- (* (+ x4 x3) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (* x1 x4) (* (- x2 x1) (+ x4 x3))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (84 enodes)
* * [misc]simplify:  iters left: 4 (219 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ x3 x4) (- x2 x1)) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2))))) (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (+ (* x4 x3) (+ x3 x4))) (- (* x3 x3) (* x2 (- x3 x2)))))
* [exit]simplify:  Simplified to (* (* (* (+ x3 x4) (- x2 x1)) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2))))) (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (+ (* x4 x3) (+ x3 x4))) (- (* x3 x3) (* x2 (- x3 x2)))))
* * * * [misc]progress:  [ 68 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (59 enodes)
* * [misc]simplify:  iters left: 5 (159 enodes)
* * [misc]simplify:  iters left: 4 (368 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (sqr x1) (* x2 (+ x2 x1))) (* (- x2 x3) (+ (* x4 x3) (+ x4 x3)))) (+ (* (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2)))) (* x3 (* (- x2 x1) (- (* (+ x4 x3) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (* (* x1 x4) (- x2 x1)) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ x4 x3)))) (* (- (* (* (- x2 x3) x2) (+ (* (+ (sqr x1) (* x2 (+ x2 x1))) (- (sqr (+ x4 x3)) (* (* x4 x3) (* x4 x3)))) (* (+ (* x4 x3) (+ x4 x3)) (- (cube x1) (cube x2))))) (* (* (+ (sqr x1) (* x2 (+ x2 x1))) (* (+ (* x4 x3) (+ x4 x3)) (- (* x2 x2) (* x3 x3)))) x1)) (* (* (- x2 x1) (+ x4 x3)) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2)))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (sqr x1) (* x2 (+ x2 x1))) (* (- x2 x3) (+ (* x4 x3) (+ x4 x3)))) (+ (* (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2)))) (* x3 (* (- x2 x1) (- (* (+ x4 x3) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (* (* x1 x4) (- x2 x1)) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ x4 x3)))) (* (- (* (* (- x2 x3) x2) (+ (* (+ (sqr x1) (* x2 (+ x2 x1))) (- (sqr (+ x4 x3)) (* (* x4 x3) (* x4 x3)))) (* (+ (* x4 x3) (+ x4 x3)) (- (cube x1) (cube x2))))) (* (* (+ (sqr x1) (* x2 (+ x2 x1))) (* (+ (* x4 x3) (+ x4 x3)) (- (* x2 x2) (* x3 x3)))) x1)) (* (* (- x2 x1) (+ x4 x3)) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (70 enodes)
* * [misc]simplify:  iters left: 4 (174 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x4 x3) (+ x3 x4)) (- x2 x3)) (+ (* x2 (+ x2 x1)) (* x1 x1))) (* (* (+ x3 x4) (- x2 x1)) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- (+ (- x3 x4) (- x1)) x2)))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x4 x3) (+ x3 x4)) (- x2 x3)) (+ (* x2 (+ x2 x1)) (* x1 x1))) (* (* (+ x3 x4) (- x2 x1)) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- (+ (- x3 x4) (- x1)) x2)))))
* * * * [misc]progress:  [ 69 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (63 enodes)
* * [misc]simplify:  iters left: 5 (179 enodes)
* * [misc]simplify:  iters left: 4 (441 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* x3 (- (* (+ x4 x3) (* (- x2 x1) (+ x2 x1))) (* (+ x4 x3) (* (- x2 x1) (- x3 x4)))))) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- x2 x1))) (+ x4 x3))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ x2 x1)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))))) (* (* (* (- x2 x1) (+ x4 x3)) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2))))) (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) x2) (+ (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (* (+ x2 x1) (- x1 x2))) (* (+ x2 x1) (- (cube (+ x4 x3)) (cube (* x4 x3)))))) (* (* (* (+ (cube x2) (cube x3)) x1) (+ x2 x1)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* x3 (- (* (+ x4 x3) (* (- x2 x1) (+ x2 x1))) (* (+ x4 x3) (* (- x2 x1) (- x3 x4)))))) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- x2 x1))) (+ x4 x3))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ x2 x1)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))))) (* (* (* (- x2 x1) (+ x4 x3)) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2))))) (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) x2) (+ (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (* (+ x2 x1) (- x1 x2))) (* (+ x2 x1) (- (cube (+ x4 x3)) (cube (* x4 x3)))))) (* (* (* (+ (cube x2) (cube x3)) x1) (+ x2 x1)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (88 enodes)
* * [misc]simplify:  iters left: 4 (229 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 x2) (* (- x3 x2) x3)) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (* (+ x3 x4) (- x2 x1)) (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))) (* x2 x2))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 x2) (* (- x3 x2) x3)) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (* (+ x3 x4) (- x2 x1)) (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))) (* x2 x2))))
* * * * [misc]progress:  [ 70 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (60 enodes)
* * [misc]simplify:  iters left: 5 (160 enodes)
* * [misc]simplify:  iters left: 4 (346 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ x2 x1)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))) (+ (* (+ (* (+ (- x3 x4) (- (- x1) x2)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* x3 (* (- x2 x1) (- (* (+ x2 x1) (+ x4 x3)) (- (* x3 x3) (* x4 x4)))))) (* (* (- x2 x1) (+ x4 x3)) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))) (* (* (* (- x2 x1) (+ x4 x3)) (+ (* (+ (- x3 x4) (- (- x1) x2)) (+ (- x3 x4) (- x1))) (* x2 x2))) (- (* (* (- x2 x3) x2) (+ (* (* (+ x2 x1) (- x1 x2)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))) (* (- (cube (+ x4 x3)) (cube (* x4 x3))) (+ x2 x1)))) (* (* (* (- x2 x3) (* (+ x2 x3) x1)) (+ x2 x1)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))))))
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ x2 x1)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))) (+ (* (+ (* (+ (- x3 x4) (- (- x1) x2)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* x3 (* (- x2 x1) (- (* (+ x2 x1) (+ x4 x3)) (- (* x3 x3) (* x4 x4)))))) (* (* (- x2 x1) (+ x4 x3)) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))) (* (* (* (- x2 x1) (+ x4 x3)) (+ (* (+ (- x3 x4) (- (- x1) x2)) (+ (- x3 x4) (- x1))) (* x2 x2))) (- (* (* (- x2 x3) x2) (+ (* (* (+ x2 x1) (- x1 x2)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))) (* (- (cube (+ x4 x3)) (cube (* x4 x3))) (+ x2 x1)))) (* (* (* (- x2 x3) (* (+ x2 x3) x1)) (+ x2 x1)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (75 enodes)
* * [misc]simplify:  iters left: 4 (170 enodes)
* * [misc]simplify:  iters left: 3 (490 enodes)
* [exit]simplify:  Simplified to (* (+ (* (+ (- x1) (- (- x3 x4) x2)) (* (+ (- x3 x4) (- x1)) (- x2 x1))) (* (* x2 x2) (- x2 x1))) (* (+ (* (* (+ x2 x1) (* x4 x3)) (+ (+ x3 x4) (* x4 x3))) (* (+ x2 x1) (* (+ x3 x4) (+ x3 x4)))) (* (- x2 x3) (+ x3 x4))))
* [exit]simplify:  Simplified to (* (+ (* (+ (- x1) (- (- x3 x4) x2)) (* (+ (- x3 x4) (- x1)) (- x2 x1))) (* (* x2 x2) (- x2 x1))) (* (+ (* (* (+ x2 x1) (* x4 x3)) (+ (+ x3 x4) (* x4 x3))) (* (+ x2 x1) (* (+ x3 x4) (+ x3 x4)))) (* (- x2 x3) (+ x3 x4))))
* * * * [misc]progress:  [ 71 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (59 enodes)
* * [misc]simplify:  iters left: 5 (172 enodes)
* * [misc]simplify:  iters left: 4 (435 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1))) (+ (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))) (* x2 x2)) (* x3 (- (* (+ x4 x3) (* (- x2 x1) (+ x2 x1))) (* (- (* x3 x3) (* x4 x4)) (- x2 x1))))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (* (- x2 x1) (+ x4 x3)))))) (* (- (* (* x2 (+ (* x3 (- x3 x2)) (* x2 x2))) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))))) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (* x1 (+ (cube x3) (cube x2))))) (* (* (- x2 x1) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))) (* x2 x2)))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1))) (+ (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))) (* x2 x2)) (* x3 (- (* (+ x4 x3) (* (- x2 x1) (+ x2 x1))) (* (- (* x3 x3) (* x4 x4)) (- x2 x1))))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (* (- x2 x1) (+ x4 x3)))))) (* (- (* (* x2 (+ (* x3 (- x3 x2)) (* x2 x2))) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))))) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (* x1 (+ (cube x3) (cube x2))))) (* (* (- x2 x1) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))) (* x2 x2)))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (77 enodes)
* * [misc]simplify:  iters left: 4 (205 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* (- x3 x2) x3) (* x2 x2)) (* (+ x2 x1) (+ (+ x3 x4) (* x4 x3)))) (* (* (+ x3 x4) (- x2 x1)) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2))))))
* [exit]simplify:  Simplified to (* (* (+ (* (- x3 x2) x3) (* x2 x2)) (* (+ x2 x1) (+ (+ x3 x4) (* x4 x3)))) (* (* (+ x3 x4) (- x2 x1)) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2))))))
* * * * [misc]progress:  [ 72 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (153 enodes)
* * [misc]simplify:  iters left: 4 (352 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x1) (+ x4 x3)) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (* (- x2 x3) x2) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (* (+ x2 x3) (* (- x2 x3) x1))))) (* (+ (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* x3 (- (* (+ x4 x3) (* (- x2 x1) (+ x2 x1))) (* (- (* x3 x3) (* x4 x4)) (- x2 x1))))) (* (* (* x1 x4) (* (- x2 x1) (+ x4 x3))) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))) (* (* (- x2 x3) (+ x2 x1)) (+ (+ x4 x3) (* x4 x3)))))
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x1) (+ x4 x3)) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (* (- x2 x3) x2) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (* (+ x2 x3) (* (- x2 x3) x1))))) (* (+ (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* x3 (- (* (+ x4 x3) (* (- x2 x1) (+ x2 x1))) (* (- (* x3 x3) (* x4 x4)) (- x2 x1))))) (* (* (* x1 x4) (* (- x2 x1) (+ x4 x3))) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))) (* (* (- x2 x3) (+ x2 x1)) (+ (+ x4 x3) (* x4 x3)))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (63 enodes)
* * [misc]simplify:  iters left: 4 (145 enodes)
* * [misc]simplify:  iters left: 3 (382 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (+ x3 x4) (* x4 x3)) (* (- x2 x3) (+ x2 x1))) (* (+ x3 x4) (- x2 x1))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* [exit]simplify:  Simplified to (* (* (* (+ (+ x3 x4) (* x4 x3)) (* (- x2 x3) (+ x2 x1))) (* (+ x3 x4) (- x2 x1))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* * * * [misc]progress:  [ 73 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (59 enodes)
* * [misc]simplify:  iters left: 5 (157 enodes)
* * [misc]simplify:  iters left: 4 (348 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* (- (* x3 x3) (* x2 (- x3 x2))) x2) (+ (cube (- x1 x2)) (cube (- (+ x4 x3) (* x4 x3))))) (* (+ (- (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3))) (* (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* (- x1 x2) (- x1 x2))) (* x1 (+ (cube x3) (cube x2))))) (* (* (- x2 x1) (+ x4 x3)) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))))) (* (+ (* (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* x3 (* (- x2 x1) (- (* (+ x2 x1) (+ x4 x3)) (- (* x3 x3) (* x4 x4)))))) (* (* (- x2 x1) (+ x4 x3)) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (* (- (* x3 x3) (* x2 (- x3 x2))) (+ (- (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3))) (* (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* (- x1 x2) (- x1 x2))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* (- (* x3 x3) (* x2 (- x3 x2))) x2) (+ (cube (- x1 x2)) (cube (- (+ x4 x3) (* x4 x3))))) (* (+ (- (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3))) (* (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* (- x1 x2) (- x1 x2))) (* x1 (+ (cube x3) (cube x2))))) (* (* (- x2 x1) (+ x4 x3)) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))))) (* (+ (* (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* x3 (* (- x2 x1) (- (* (+ x2 x1) (+ x4 x3)) (- (* x3 x3) (* x4 x4)))))) (* (* (- x2 x1) (+ x4 x3)) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (* (- (* x3 x3) (* x2 (- x3 x2))) (+ (- (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3))) (* (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* (- x1 x2) (- x1 x2))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (78 enodes)
* * [misc]simplify:  iters left: 4 (184 enodes)
* * [misc]simplify:  iters left: 3 (422 enodes)
* [exit]simplify:  Simplified to (* (* (* (* (+ x3 x4) (- x2 x1)) (- (* x3 x3) (* (- x3 x2) x2))) (+ (sqr (- x1 x2)) (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (+ x3 x4) (* x4 x3)))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* [exit]simplify:  Simplified to (* (* (* (* (+ x3 x4) (- x2 x1)) (- (* x3 x3) (* (- x3 x2) x2))) (+ (sqr (- x1 x2)) (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (+ x3 x4) (* x4 x3)))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* * * * [misc]progress:  [ 74 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (138 enodes)
* * [misc]simplify:  iters left: 4 (261 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- x2 x3) (- x1 x2)) (- x1 x2)) (* (* (- x2 x3) (- (+ x4 x3) (* x4 x3))) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (+ (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2))) (* x2 x2)) (* x3 (* (- x2 x1) (- (* (+ x4 x3) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (* (- x2 x1) (+ x4 x3)))))) (* (* (* (- x2 x1) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2))) (* x2 x2))) (- (* (* (- x2 x3) x2) (+ (cube (- x1 x2)) (cube (- (+ x4 x3) (* x4 x3))))) (* (+ (* (- (+ x4 x3) (* x4 x3)) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (- x1 x2) (- x1 x2))) (* (- x2 x3) (* x1 (+ x2 x3)))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- x2 x3) (- x1 x2)) (- x1 x2)) (* (* (- x2 x3) (- (+ x4 x3) (* x4 x3))) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (+ (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2))) (* x2 x2)) (* x3 (* (- x2 x1) (- (* (+ x4 x3) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (* (- x2 x1) (+ x4 x3)))))) (* (* (* (- x2 x1) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2))) (* x2 x2))) (- (* (* (- x2 x3) x2) (+ (cube (- x1 x2)) (cube (- (+ x4 x3) (* x4 x3))))) (* (+ (* (- (+ x4 x3) (* x4 x3)) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (- x1 x2) (- x1 x2))) (* (- x2 x3) (* x1 (+ x2 x3)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (64 enodes)
* * [misc]simplify:  iters left: 4 (133 enodes)
* * [misc]simplify:  iters left: 3 (335 enodes)
* [exit]simplify:  Simplified to (* (+ (* (* (- (+ x3 x4) (* x4 x3)) (- x2 x3)) (- (+ x3 x4) (+ (* x4 x3) (- x1 x2)))) (* (- x1 x2) (* (- x2 x3) (- x1 x2)))) (+ (* (* (+ x3 x4) (- x2 x1)) (* x2 x2)) (* (* (* (+ x3 x4) (- x2 x1)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2)))))
* [exit]simplify:  Simplified to (* (+ (* (* (- (+ x3 x4) (* x4 x3)) (- x2 x3)) (- (+ x3 x4) (+ (* x4 x3) (- x1 x2)))) (* (- x1 x2) (* (- x2 x3) (- x1 x2)))) (+ (* (* (+ x3 x4) (- x2 x1)) (* x2 x2)) (* (* (* (+ x3 x4) (- x2 x1)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2)))))
* * * * [misc]progress:  [ 75 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (55 enodes)
* * [misc]simplify:  iters left: 5 (146 enodes)
* * [misc]simplify:  iters left: 4 (314 enodes)
* [exit]simplify:  Simplified to (+ (* (* (- (* x3 x3) (* x2 (- x3 x2))) (- (- x1 (+ x2 x4)) (- x3 (* x4 x3)))) (+ (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))) (* x2 x2)) (* x3 (* (- x2 x1) (- (* (+ x4 x3) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (- x2 x1) (+ x4 x3)) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))) (* (* (* (- x2 x1) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))) (* x2 x2))) (- (* (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3)))) (- (* x3 x3) (* x2 (- x3 x2)))) x2) (* (- (- x1 (+ x2 x4)) (- x3 (* x4 x3))) (* x1 (+ (cube x3) (cube x2)))))))
* [exit]simplify:  Simplified to (+ (* (* (- (* x3 x3) (* x2 (- x3 x2))) (- (- x1 (+ x2 x4)) (- x3 (* x4 x3)))) (+ (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))) (* x2 x2)) (* x3 (* (- x2 x1) (- (* (+ x4 x3) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (- x2 x1) (+ x4 x3)) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))) (* (* (* (- x2 x1) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))) (* x2 x2))) (- (* (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3)))) (- (* x3 x3) (* x2 (- x3 x2)))) x2) (* (- (- x1 (+ x2 x4)) (- x3 (* x4 x3))) (* x1 (+ (cube x3) (cube x2)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (72 enodes)
* * [misc]simplify:  iters left: 4 (158 enodes)
* * [misc]simplify:  iters left: 3 (371 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* (- x3 x2) x3) (* x2 x2)) (- (+ (* x4 x3) x1) (+ x2 (+ x3 x4)))) (+ (* (* (+ x3 x4) (- x2 x1)) (* x2 x2)) (* (* (* (+ x3 x4) (- x2 x1)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2)))))
* [exit]simplify:  Simplified to (* (* (+ (* (- x3 x2) x3) (* x2 x2)) (- (+ (* x4 x3) x1) (+ x2 (+ x3 x4)))) (+ (* (* (+ x3 x4) (- x2 x1)) (* x2 x2)) (* (* (* (+ x3 x4) (- x2 x1)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2)))))
* * * * [misc]progress:  [ 76 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (127 enodes)
* * [misc]simplify:  iters left: 4 (248 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* x3 (* (- x2 x1) (- (* (+ x4 x3) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (- x2 x1) (+ x4 x3)) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (* (- x2 x3) (- (- (- x1 x2) x3) (- x4 (* x4 x3))))) (* (* (* (- x2 x1) (+ x4 x3)) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (- x2 x3) (* x2 (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3)))))) (* (* x1 (* (- x2 x3) (+ x2 x3))) (- (- (- x1 x2) x3) (- x4 (* x4 x3)))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* x3 (* (- x2 x1) (- (* (+ x4 x3) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (- x2 x1) (+ x4 x3)) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (* (- x2 x3) (- (- (- x1 x2) x3) (- x4 (* x4 x3))))) (* (* (* (- x2 x1) (+ x4 x3)) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (- x2 x3) (* x2 (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3)))))) (* (* x1 (* (- x2 x3) (+ x2 x3))) (- (- (- x1 x2) x3) (- x4 (* x4 x3)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (58 enodes)
* * [misc]simplify:  iters left: 4 (111 enodes)
* * [misc]simplify:  iters left: 3 (243 enodes)
* [exit]simplify:  Simplified to (* (* (- x2 x3) (* (* (+ x3 x4) (- x2 x1)) (- (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* [exit]simplify:  Simplified to (* (* (- x2 x3) (* (* (+ x3 x4) (- x2 x1)) (- (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* * * * [misc]progress:  [ 77 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3)))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (142 enodes)
* * [misc]simplify:  iters left: 4 (313 enodes)
* [exit]simplify:  Simplified to (+ (* (- (cube (* (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3)) x2)) (cube (* x1 (+ x2 x3)))) (* (* (- x2 x1) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))))) (* (+ (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (* (- x2 x1) (- (* (+ x4 x3) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (- x2 x1) (+ x4 x3)) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (+ (+ (* (* (* x1 (+ x2 x3)) x2) (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3))) (* (* x1 (+ x2 x3)) (* x1 (+ x2 x3)))) (sqr (* (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3)) x2)))))
* [exit]simplify:  Simplified to (+ (* (- (cube (* (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3)) x2)) (cube (* x1 (+ x2 x3)))) (* (* (- x2 x1) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))))) (* (+ (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (* (- x2 x1) (- (* (+ x4 x3) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (- x2 x1) (+ x4 x3)) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (+ (+ (* (* (* x1 (+ x2 x3)) x2) (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3))) (* (* x1 (+ x2 x3)) (* x1 (+ x2 x3)))) (sqr (* (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3)) x2)))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (90 enodes)
* * [misc]simplify:  iters left: 4 (209 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ x3 x4) (- x2 x1)) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- (+ (- x3 x4) (- x1)) x2)))) (+ (* (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3)))) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))))) (+ (* (* (* x2 x1) (+ x3 x2)) (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3)))) (sqr (* (+ x3 x2) x1)))))
* [exit]simplify:  Simplified to (* (* (* (+ x3 x4) (- x2 x1)) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- (+ (- x3 x4) (- x1)) x2)))) (+ (* (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3)))) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))))) (+ (* (* (* x2 x1) (+ x3 x2)) (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3)))) (sqr (* (+ x3 x2) x1)))))
* * * * [misc]progress:  [ 78 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (48 enodes)
* * [misc]simplify:  iters left: 5 (134 enodes)
* * [misc]simplify:  iters left: 4 (282 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))) x2) (* (+ x2 x3) x1)) (- (* (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))) x2) (* (+ x2 x3) x1))) (* (* (- x2 x1) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))))) (* (+ (* (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))) x2) (* (+ x2 x3) x1)) (+ (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (* (- x2 x1) (- (* (+ x4 x3) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (* x1 x4) (* (- x2 x1) (+ x4 x3))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))) x2) (* (+ x2 x3) x1)) (- (* (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))) x2) (* (+ x2 x3) x1))) (* (* (- x2 x1) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))))) (* (+ (* (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))) x2) (* (+ x2 x3) x1)) (+ (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (* (- x2 x1) (- (* (+ x4 x3) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (* x1 x4) (* (- x2 x1) (+ x4 x3))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (75 enodes)
* * [misc]simplify:  iters left: 4 (156 enodes)
* * [misc]simplify:  iters left: 3 (405 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* x1 (+ x3 x2)) (* x2 (- (- (+ x3 x1) (- x2 x4)) (* x4 x3)))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2))) (* (+ x3 x4) (- x2 x1)))
* [exit]simplify:  Simplified to (* (* (+ (* x1 (+ x3 x2)) (* x2 (- (- (+ x3 x1) (- x2 x4)) (* x4 x3)))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2))) (* (+ x3 x4) (- x2 x1)))
* * * * [misc]progress:  [ 79 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (67 enodes)
* * [misc]simplify:  iters left: 5 (188 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)))) (- (* (+ (* (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3))) (* (- (cube x1) (cube x2)) x2)) (* (+ (sqr x1) (* x2 (+ x2 x1))) (* (- (cube (+ x4 x3)) (cube (* x4 x3))) x2))) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3))) (* (+ (sqr x1) (* x2 (+ x2 x1))) (* (+ (cube x2) (cube x3)) x1))))) (* (* (+ (sqr x1) (* x2 (+ x2 x1))) (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3))))) (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)))) (- (* (+ (* (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3))) (* (- (cube x1) (cube x2)) x2)) (* (+ (sqr x1) (* x2 (+ x2 x1))) (* (- (cube (+ x4 x3)) (cube (* x4 x3))) x2))) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3))) (* (+ (sqr x1) (* x2 (+ x2 x1))) (* (+ (cube x2) (cube x3)) x1))))) (* (* (+ (sqr x1) (* x2 (+ x2 x1))) (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (sqr (+ x4 x3))))) (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (37 enodes)
* * [misc]simplify:  iters left: 5 (104 enodes)
* * [misc]simplify:  iters left: 4 (291 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* x1 x1) (* x2 (+ x2 x1)))) (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))) (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- (+ (- x3 x4) (- x1)) x2))) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1))))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* x1 x1) (* x2 (+ x2 x1)))) (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))) (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- (+ (- x3 x4) (- x1)) x2))) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1))))))
* * * * [misc]progress:  [ 80 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (64 enodes)
* * [misc]simplify:  iters left: 5 (169 enodes)
* * [misc]simplify:  iters left: 4 (450 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (- x2 x3)) (+ (* (+ (* (+ x2 x1) x1) (* x2 x2)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (- (cube x1) (cube x2))))) (* (* (* (- x2 x3) (* x1 (+ x2 x3))) (+ (* (+ x2 x1) x1) (* x2 x2))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))))) (* (* (* (+ (* (+ x2 x1) x1) (* x2 x2)) (- x2 x3)) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))) (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (- x2 x3)) (+ (* (+ (* (+ x2 x1) x1) (* x2 x2)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (- (cube x1) (cube x2))))) (* (* (* (- x2 x3) (* x1 (+ x2 x3))) (+ (* (+ x2 x1) x1) (* x2 x2))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))))) (* (* (* (+ (* (+ x2 x1) x1) (* x2 x2)) (- x2 x3)) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))) (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (34 enodes)
* * [misc]simplify:  iters left: 5 (91 enodes)
* * [misc]simplify:  iters left: 4 (260 enodes)
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- (+ (- x3 x4) (- x1)) x2))) (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4)))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- x2 x3)) (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))))
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- (+ (- x3 x4) (- x1)) x2))) (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4)))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- x2 x3)) (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))))
* * * * [misc]progress:  [ 81 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (63 enodes)
* * [misc]simplify:  iters left: 5 (181 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (* (* (+ (+ x4 x3) (* x4 x3)) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (sqr x1) (* x2 (+ x2 x1))))) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)))) (- (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (+ (+ x4 x3) (* x4 x3)) (- (cube x1) (cube x2))) (* (* (- (+ x4 x3) (* x4 x3)) (+ (+ x4 x3) (* x4 x3))) (+ (sqr x1) (* x2 (+ x2 x1)))))) x2) (* (* (+ (sqr x1) (* x2 (+ x2 x1))) (* (+ (+ x4 x3) (* x4 x3)) (+ (cube x2) (cube x3)))) x1))))
* [exit]simplify:  Simplified to (+ (* (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (* (* (+ (+ x4 x3) (* x4 x3)) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (sqr x1) (* x2 (+ x2 x1))))) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)))) (- (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (+ (+ x4 x3) (* x4 x3)) (- (cube x1) (cube x2))) (* (* (- (+ x4 x3) (* x4 x3)) (+ (+ x4 x3) (* x4 x3))) (+ (sqr x1) (* x2 (+ x2 x1)))))) x2) (* (* (+ (sqr x1) (* x2 (+ x2 x1))) (* (+ (+ x4 x3) (* x4 x3)) (+ (cube x2) (cube x3)))) x1))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (93 enodes)
* * [misc]simplify:  iters left: 4 (289 enodes)
* [exit]simplify:  Simplified to (* (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4)))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (+ x3 x4) (* x4 x3))))
* [exit]simplify:  Simplified to (* (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4)))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (+ x3 x4) (* x4 x3))))
* * * * [misc]progress:  [ 82 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (60 enodes)
* * [misc]simplify:  iters left: 5 (162 enodes)
* * [misc]simplify:  iters left: 4 (431 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))))) (- (* (* x2 (- x2 x3)) (+ (* (+ (sqr x1) (* (+ x2 x1) x2)) (- (sqr (+ x4 x3)) (* (* x4 x3) (* x4 x3)))) (* (+ (+ x4 x3) (* x4 x3)) (- (cube x1) (cube x2))))) (* (* (* (+ x2 x3) (* (- x2 x3) x1)) (+ (+ x4 x3) (* x4 x3))) (+ (sqr x1) (* (+ x2 x1) x2))))) (* (* (+ (sqr x1) (* (+ x2 x1) x2)) (* (- x2 x3) (+ (+ x4 x3) (* x4 x3)))) (+ (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))))) (- (* (* x2 (- x2 x3)) (+ (* (+ (sqr x1) (* (+ x2 x1) x2)) (- (sqr (+ x4 x3)) (* (* x4 x3) (* x4 x3)))) (* (+ (+ x4 x3) (* x4 x3)) (- (cube x1) (cube x2))))) (* (* (* (+ x2 x3) (* (- x2 x3) x1)) (+ (+ x4 x3) (* x4 x3))) (+ (sqr x1) (* (+ x2 x1) x2))))) (* (* (+ (sqr x1) (* (+ x2 x1) x2)) (* (- x2 x3) (+ (+ x4 x3) (* x4 x3)))) (+ (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (79 enodes)
* * [misc]simplify:  iters left: 4 (229 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (+ x3 x4) (* x4 x3)) (- x2 x3))) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (+ x3 x4) (* x4 x3)) (- x2 x3))) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* * * * [misc]progress:  [ 83 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (64 enodes)
* * [misc]simplify:  iters left: 5 (181 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (* x2 (- (sqr x1) (* x2 x2))) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))) (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3)))))) (* (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (* (+ x2 x1) (+ (cube x3) (cube x2)))) x1)) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))))) (* (* (+ x2 x1) (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (+ (* x2 x2) (* x3 (- x3 x2))))) (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))))
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (* x2 (- (sqr x1) (* x2 x2))) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))) (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3)))))) (* (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (* (+ x2 x1) (+ (cube x3) (cube x2)))) x1)) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))))) (* (* (+ x2 x1) (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (+ (* x2 x2) (* x3 (- x3 x2))))) (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (34 enodes)
* * [misc]simplify:  iters left: 5 (95 enodes)
* * [misc]simplify:  iters left: 4 (286 enodes)
* [exit]simplify:  Simplified to (* (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1))))) (* (* (+ x2 x1) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))))
* [exit]simplify:  Simplified to (* (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1))))) (* (* (+ x2 x1) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))))
* * * * [misc]progress:  [ 84 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (61 enodes)
* * [misc]simplify:  iters left: 5 (162 enodes)
* * [misc]simplify:  iters left: 4 (430 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (* (+ x2 x1) (* x4 x3)) (+ (* x4 x3) (+ x4 x3))) (* (* (+ x4 x3) (+ x2 x1)) (+ x4 x3))) (- x2 x3)) (+ (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))) (* (- (* (* (- x2 x3) x2) (+ (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (* (- x1 x2) (+ x2 x1))) (* (- (cube (+ x4 x3)) (cube (* x4 x3))) (+ x2 x1)))) (* (+ (* (* (+ x2 x1) (* x4 x3)) (+ (* x4 x3) (+ x4 x3))) (* (* (+ x4 x3) (+ x2 x1)) (+ x4 x3))) (* (* x1 (+ x2 x3)) (- x2 x3)))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (* (+ x2 x1) (* x4 x3)) (+ (* x4 x3) (+ x4 x3))) (* (* (+ x4 x3) (+ x2 x1)) (+ x4 x3))) (- x2 x3)) (+ (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))) (* (- (* (* (- x2 x3) x2) (+ (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (* (- x1 x2) (+ x2 x1))) (* (- (cube (+ x4 x3)) (cube (* x4 x3))) (+ x2 x1)))) (* (+ (* (* (+ x2 x1) (* x4 x3)) (+ (* x4 x3) (+ x4 x3))) (* (* (+ x4 x3) (+ x2 x1)) (+ x4 x3))) (* (* x1 (+ x2 x3)) (- x2 x3)))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (31 enodes)
* * [misc]simplify:  iters left: 5 (82 enodes)
* * [misc]simplify:  iters left: 4 (243 enodes)
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1))))) (* (* (+ x2 x1) (- x2 x3)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))))))
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1))))) (* (* (+ x2 x1) (- x2 x3)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))))))
* * * * [misc]progress:  [ 85 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (60 enodes)
* * [misc]simplify:  iters left: 5 (174 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)))) (- (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (* x2 (+ x2 x1)) (* (+ (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3)))) (* (* x2 (- (sqr x1) (* x2 x2))) (+ (+ x4 x3) (* x4 x3))))) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (* x1 (+ (cube x3) (cube x2)))))) (* (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)))) (- (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (* x2 (+ x2 x1)) (* (+ (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3)))) (* (* x2 (- (sqr x1) (* x2 x2))) (+ (+ x4 x3) (* x4 x3))))) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (* x1 (+ (cube x3) (cube x2)))))) (* (* (* (+ (+ x4 x3) (* x4 x3)) (+ x2 x1)) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (84 enodes)
* * [misc]simplify:  iters left: 4 (290 enodes)
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1)))) (+ (* x2 x2) (* (- x3 x2) x3)))
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1)))) (+ (* x2 x2) (* (- x3 x2) x3)))
* * * * [misc]progress:  [ 86 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (57 enodes)
* * [misc]simplify:  iters left: 5 (155 enodes)
* * [misc]simplify:  iters left: 4 (430 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (- x2 x3))) (* (- (* (* x2 (- x2 x3)) (+ (* (+ (+ x4 x3) (* x4 x3)) (- (sqr x1) (* x2 x2))) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (- (+ x4 x3) (* x4 x3))))) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (* x1 (* (+ x2 x3) (- x2 x3))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (- x2 x3))) (* (- (* (* x2 (- x2 x3)) (+ (* (+ (+ x4 x3) (* x4 x3)) (- (sqr x1) (* x2 x2))) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (- (+ x4 x3) (* x4 x3))))) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (* x1 (* (+ x2 x3) (- x2 x3))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (70 enodes)
* * [misc]simplify:  iters left: 4 (224 enodes)
* [exit]simplify:  Simplified to (* (* (* (* (- x2 x3) (+ x2 x1)) (+ (+ x3 x4) (* x4 x3))) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1))))) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))))
* [exit]simplify:  Simplified to (* (* (* (* (- x2 x3) (+ x2 x1)) (+ (+ x3 x4) (* x4 x3))) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1))))) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))))
* * * * [misc]progress:  [ 87 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (59 enodes)
* * [misc]simplify:  iters left: 5 (157 enodes)
* * [misc]simplify:  iters left: 4 (405 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) x2) (+ (cube (- x1 x2)) (cube (- (+ x4 x3) (* x4 x3))))) (* (* x1 (+ (cube x3) (cube x2))) (- (sqr (- (+ x4 x3) (* x4 x3))) (* (- x1 x2) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (- (sqr (- (+ x4 x3) (* x4 x3))) (* (- x1 x2) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))))) (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) x2) (+ (cube (- x1 x2)) (cube (- (+ x4 x3) (* x4 x3))))) (* (* x1 (+ (cube x3) (cube x2))) (- (sqr (- (+ x4 x3) (* x4 x3))) (* (- x1 x2) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (- (sqr (- (+ x4 x3) (* x4 x3))) (* (- x1 x2) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))))) (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (34 enodes)
* * [misc]simplify:  iters left: 5 (87 enodes)
* * [misc]simplify:  iters left: 4 (239 enodes)
* [exit]simplify:  Simplified to (* (+ (* (- (+ (- x3 x4) (- x1)) x2) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (+ (* x2 x2) (* x3 (- x3 x2)))) (- (sqr (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2))))))
* [exit]simplify:  Simplified to (* (+ (* (- (+ (- x3 x4) (- x1)) x2) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (+ (* x2 x2) (* x3 (- x3 x2)))) (- (sqr (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2))))))
* * * * [misc]progress:  [ 88 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (138 enodes)
* * [misc]simplify:  iters left: 4 (316 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))))) (- (* (* (- x2 x3) x2) (+ (cube (- x1 x2)) (cube (- (+ x4 x3) (* x4 x3))))) (* (+ (* (- (+ x4 x3) (* x4 x3)) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (- x1 x2) (- x1 x2))) (* (- (* x2 x2) (* x3 x3)) x1)))) (* (+ (* (- x2 x3) (* (- x1 x2) (- x1 x2))) (* (* (- x2 x3) (- (+ x4 x3) (* x4 x3))) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (+ (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))))) (- (* (* (- x2 x3) x2) (+ (cube (- x1 x2)) (cube (- (+ x4 x3) (* x4 x3))))) (* (+ (* (- (+ x4 x3) (* x4 x3)) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (- x1 x2) (- x1 x2))) (* (- (* x2 x2) (* x3 x3)) x1)))) (* (+ (* (- x2 x3) (* (- x1 x2) (- x1 x2))) (* (* (- x2 x3) (- (+ x4 x3) (* x4 x3))) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (+ (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (31 enodes)
* * [misc]simplify:  iters left: 5 (73 enodes)
* * [misc]simplify:  iters left: 4 (198 enodes)
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- x2 x3)) (+ (* (- (+ x3 x4) (* x4 x3)) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (- x1 x2) (- x1 x2)))))
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- x2 x3)) (+ (* (- (+ x3 x4) (* x4 x3)) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (- x1 x2) (- x1 x2)))))
* * * * [misc]progress:  [ 89 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (55 enodes)
* * [misc]simplify:  iters left: 5 (146 enodes)
* * [misc]simplify:  iters left: 4 (373 enodes)
* [exit]simplify:  Simplified to (+ (* (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2))))) (- (* (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (* (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))) x2)) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (* x1 (+ (cube x3) (cube x2)))))))
* [exit]simplify:  Simplified to (+ (* (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1)))))))) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2))))) (- (* (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (* (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))) x2)) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (* x1 (+ (cube x3) (cube x2)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (81 enodes)
* * [misc]simplify:  iters left: 4 (225 enodes)
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4))) (* (- (+ (* x4 x3) (- x1 x2)) (+ x3 x4)) (+ (* x2 x2) (* x3 (- x3 x2))))))
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4))) (* (- (+ (* x4 x3) (- x1 x2)) (+ x3 x4)) (+ (* x2 x2) (* x3 (- x3 x2))))))
* * * * [misc]progress:  [ 90 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (127 enodes)
* * [misc]simplify:  iters left: 4 (305 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))))) (- (* (* (- x2 x3) x2) (- (* (- x1 x2) (- x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3))))) (* (* (- x2 x3) (* x1 (+ x2 x3))) (- (- x1 x2) (- (+ x4 x3) (* x4 x3)))))) (* (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2)))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (* (- x2 x3) (- (- x1 x2) (- (+ x4 x3) (* x4 x3))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2))))) (- (* (* (- x2 x3) x2) (- (* (- x1 x2) (- x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3))))) (* (* (- x2 x3) (* x1 (+ x2 x3))) (- (- x1 x2) (- (+ x4 x3) (* x4 x3)))))) (* (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- (- x1) x2)))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (* (- x2 x3) (- (- x1 x2) (- (+ x4 x3) (* x4 x3))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (67 enodes)
* * [misc]simplify:  iters left: 4 (178 enodes)
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4))) (* (- (+ (* x4 x3) (- x1 x2)) (+ x3 x4)) (- x2 x3))))
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4))) (* (- (+ (* x4 x3) (- x1 x2)) (+ x3 x4)) (- x2 x3))))
* * * * [misc]progress:  [ 91 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3)))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3))))
* * [misc]simplify:  iters left: 6 (51 enodes)
* * [misc]simplify:  iters left: 5 (141 enodes)
* * [misc]simplify:  iters left: 4 (366 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (- x3 x4) (+ x2 x1)) (- x3 x4))) (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1))))) (- (cube (* x2 (+ (- x1 (- x2 x3)) (- x4 (* x4 x3))))) (cube (* (+ x2 x3) x1)))) (* (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (- x3 x4) (+ x2 x1)) (- x3 x4))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (+ (+ (* (* (+ x2 x3) x1) (* (+ x2 x3) x1)) (* (* (* x1 x2) (+ x2 x3)) (+ (- x1 (- x2 x3)) (- x4 (* x4 x3))))) (* (* x2 (+ (- x1 (- x2 x3)) (- x4 (* x4 x3)))) (* x2 (+ (- x1 (- x2 x3)) (- x4 (* x4 x3))))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (- x3 x4) (+ x2 x1)) (- x3 x4))) (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1))))) (- (cube (* x2 (+ (- x1 (- x2 x3)) (- x4 (* x4 x3))))) (cube (* (+ x2 x3) x1)))) (* (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (- x3 x4) (+ x2 x1)) (- x3 x4))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (+ (+ (* (* (+ x2 x3) x1) (* (+ x2 x3) x1)) (* (* (* x1 x2) (+ x2 x3)) (+ (- x1 (- x2 x3)) (- x4 (* x4 x3))))) (* (* x2 (+ (- x1 (- x2 x3)) (- x4 (* x4 x3)))) (* x2 (+ (- x1 (- x2 x3)) (- x4 (* x4 x3))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (100 enodes)
* * [misc]simplify:  iters left: 4 (286 enodes)
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4)))) (+ (* (* x2 (+ (+ (- x1 x2) x3) (- x4 (* x4 x3)))) (* x2 (+ (+ (- x1 x2) x3) (- x4 (* x4 x3))))) (+ (* (+ (+ (- x1 x2) x3) (- x4 (* x4 x3))) (* (* x2 x1) (+ x3 x2))) (* (* (+ x3 x2) x1) (* (+ x3 x2) x1)))))
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4)))) (+ (* (* x2 (+ (+ (- x1 x2) x3) (- x4 (* x4 x3)))) (* x2 (+ (+ (- x1 x2) x3) (- x4 (* x4 x3))))) (+ (* (+ (+ (- x1 x2) x3) (- x4 (* x4 x3))) (* (* x2 x1) (+ x3 x2))) (* (* (+ x3 x2) x1) (* (+ x3 x2) x1)))))
* * * * [misc]progress:  [ 92 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (47 enodes)
* * [misc]simplify:  iters left: 5 (133 enodes)
* * [misc]simplify:  iters left: 4 (334 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (- x3 x4) (+ x2 x1)) (- x3 x4))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (+ (* x1 (+ x2 x3)) (* x2 (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2))))) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (- x3 x4) (+ x2 x1)) (- x3 x4))) (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1))))) (- (* (* x2 (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* x2 (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (sqr (* x1 (+ x2 x3))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (- x3 x4) (+ x2 x1)) (- x3 x4))) (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))) (+ (* x1 (+ x2 x3)) (* x2 (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2))))) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (- x3 x4) (+ x2 x1)) (- x3 x4))) (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1))))) (- (* (* x2 (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* x2 (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (sqr (* x1 (+ x2 x3))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (85 enodes)
* * [misc]simplify:  iters left: 4 (226 enodes)
* [exit]simplify:  Simplified to (* (+ (* x2 (- (+ x3 x4) (- (* x4 x3) (- x1 x2)))) (* (+ x3 x2) x1)) (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (- x3 x4) (+ x2 x1)) (- x3 x4)))))
* [exit]simplify:  Simplified to (* (+ (* x2 (- (+ x3 x4) (- (* x4 x3) (- x1 x2)))) (* (+ x3 x2) x1)) (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (- x3 x4) (+ x2 x1)) (- x3 x4)))))
* * * * [misc]progress:  [ 93 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (63 enodes)
* * [misc]simplify:  iters left: 5 (184 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ (sqr x1) (* x2 (+ x2 x1))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))))) (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* (* x3 (+ (+ x2 x1) (- x3 x4))) (- (+ x2 x1) (- x3 x4)))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)))) (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* x2 (+ (sqr x1) (* x2 (+ x2 x1)))) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (- (cube x1) (cube x2))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* x1 (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))) (* (+ (sqr x1) (* x2 (+ x2 x1))) (+ (cube x2) (cube x3))))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ (sqr x1) (* x2 (+ x2 x1))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))))) (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* (* x3 (+ (+ x2 x1) (- x3 x4))) (- (+ x2 x1) (- x3 x4)))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)))) (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* x2 (+ (sqr x1) (* x2 (+ x2 x1)))) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (- (cube x1) (cube x2))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* x1 (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))) (* (+ (sqr x1) (* x2 (+ x2 x1))) (+ (cube x2) (cube x3))))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (98 enodes)
* * [misc]simplify:  iters left: 4 (302 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (- (+ (- x3 x4) (- x1)) x2))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (- (+ (- x3 x4) (- x1)) x2))))
* * * * [misc]progress:  [ 94 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (60 enodes)
* * [misc]simplify:  iters left: 5 (165 enodes)
* * [misc]simplify:  iters left: 4 (438 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2))) (- (* (* x2 (- x2 x3)) (+ (* (+ (* (+ x2 x1) x1) (* x2 x2)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3))) (- (cube x1) (cube x2))))) (* (* (* (- x2 x3) (* (+ x2 x3) x1)) (+ (* (+ x2 x1) x1) (* x2 x2))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* (* (* (+ (* (+ x2 x1) x1) (* x2 x2)) (- x2 x3)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3)))) (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* (* x3 (+ (+ x2 x1) (- x3 x4))) (- (+ x2 x1) (- x3 x4)))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2))) (- (* (* x2 (- x2 x3)) (+ (* (+ (* (+ x2 x1) x1) (* x2 x2)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3))) (- (cube x1) (cube x2))))) (* (* (* (- x2 x3) (* (+ x2 x3) x1)) (+ (* (+ x2 x1) x1) (* x2 x2))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* (* (* (+ (* (+ x2 x1) x1) (* x2 x2)) (- x2 x3)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3)))) (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* (* x3 (+ (+ x2 x1) (- x3 x4))) (- (+ x2 x1) (- x3 x4)))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (85 enodes)
* * [misc]simplify:  iters left: 4 (238 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- x2 x3)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- x2 x3)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2))))
* * * * [misc]progress:  [ 95 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (59 enodes)
* * [misc]simplify:  iters left: 5 (177 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)))) (- (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (- (* (+ x4 x3) (+ x4 x3)) (sqr (* x4 x3))) (+ (sqr x1) (* x2 (+ x2 x1)))) (* (- (cube x1) (cube x2)) (+ (+ x4 x3) (* x4 x3))))) x2) (* (* (+ (sqr x1) (* x2 (+ x2 x1))) (+ (+ x4 x3) (* x4 x3))) (* x1 (+ (cube x3) (cube x2)))))) (* (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* x3 (* (+ (+ x2 x1) (- x3 x4)) (- (+ x2 x1) (- x3 x4))))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4)))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ (sqr x1) (* x2 (+ x2 x1))) (+ (+ x4 x3) (* x4 x3))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)))) (- (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (- (* (+ x4 x3) (+ x4 x3)) (sqr (* x4 x3))) (+ (sqr x1) (* x2 (+ x2 x1)))) (* (- (cube x1) (cube x2)) (+ (+ x4 x3) (* x4 x3))))) x2) (* (* (+ (sqr x1) (* x2 (+ x2 x1))) (+ (+ x4 x3) (* x4 x3))) (* x1 (+ (cube x3) (cube x2)))))) (* (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* x3 (* (+ (+ x2 x1) (- x3 x4)) (- (+ x2 x1) (- x3 x4))))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4)))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ (sqr x1) (* x2 (+ x2 x1))) (+ (+ x4 x3) (* x4 x3))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (87 enodes)
* * [misc]simplify:  iters left: 4 (258 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (- (* x3 x3) (* x2 (- x3 x2))) (+ (* x4 x3) (+ x3 x4)))) (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2))))
* [exit]simplify:  Simplified to (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (- (* x3 x3) (* x2 (- x3 x2))) (+ (* x4 x3) (+ x3 x4)))) (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2))))
* * * * [misc]progress:  [ 96 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (158 enodes)
* * [misc]simplify:  iters left: 4 (415 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (- x2 x3)) (+ (* (- (* (+ x4 x3) (+ x4 x3)) (sqr (* x4 x3))) (+ (* (+ x2 x1) x1) (* x2 x2))) (* (- (cube x1) (cube x2)) (+ (+ x4 x3) (* x4 x3))))) (* (* (+ (* (+ x2 x1) x1) (* x2 x2)) (* (+ (+ x4 x3) (* x4 x3)) (- (* x2 x2) (* x3 x3)))) x1)) (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (- (+ (- x1) x3) (+ x4 x2))))) (* (* (* (- x2 x3) (+ (+ x4 x3) (* x4 x3))) (+ (* (+ x2 x1) x1) (* x2 x2))) (+ (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* (+ (+ x2 x1) (- x3 x4)) (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (* (+ (+ x2 x1) (- x3 x4)) x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) x1))))
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (- x2 x3)) (+ (* (- (* (+ x4 x3) (+ x4 x3)) (sqr (* x4 x3))) (+ (* (+ x2 x1) x1) (* x2 x2))) (* (- (cube x1) (cube x2)) (+ (+ x4 x3) (* x4 x3))))) (* (* (+ (* (+ x2 x1) x1) (* x2 x2)) (* (+ (+ x4 x3) (* x4 x3)) (- (* x2 x2) (* x3 x3)))) x1)) (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (- (+ (- x1) x3) (+ x4 x2))))) (* (* (* (- x2 x3) (+ (+ x4 x3) (* x4 x3))) (+ (* (+ x2 x1) x1) (* x2 x2))) (+ (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* (+ (+ x2 x1) (- x3 x4)) (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (* (+ (+ x2 x1) (- x3 x4)) x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) x1))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (73 enodes)
* * [misc]simplify:  iters left: 4 (207 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (* x4 x3) (+ x3 x4)) (- x2 x3))) (+ (+ x2 x1) (- x3 x4))) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2)))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (* x4 x3) (+ x3 x4)) (- x2 x3))) (+ (+ x2 x1) (- x3 x4))) (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2)))))
* * * * [misc]progress:  [ 97 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (60 enodes)
* * [misc]simplify:  iters left: 5 (177 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)))) (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (* (- x1 x2) (+ x2 x1))) (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))))) (* (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (* (+ x2 x1) (* x1 (+ (cube x3) (cube x2))))))) (* (* (* (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ x2 x1)) (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* x3 (* (+ (+ x2 x1) (- x3 x4)) (- (+ x2 x1) (- x3 x4))))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)))) (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (* (- x1 x2) (+ x2 x1))) (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))))) (* (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (* (+ x2 x1) (* x1 (+ (cube x3) (cube x2))))))) (* (* (* (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ x2 x1)) (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* x3 (* (+ (+ x2 x1) (- x3 x4)) (- (+ x2 x1) (- x3 x4))))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (89 enodes)
* * [misc]simplify:  iters left: 4 (289 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4)))) (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (- (+ (- x1) x3) (+ x4 x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4)))) (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (- (+ (- x1) x3) (+ x4 x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2))))
* * * * [misc]progress:  [ 98 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (57 enodes)
* * [misc]simplify:  iters left: 5 (158 enodes)
* * [misc]simplify:  iters left: 4 (436 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ x2 x1)) (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))) (+ (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* (- (+ x2 x1) (- x3 x4)) (* x3 (+ (+ x2 x1) (- x3 x4))))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))) (* (- (* (+ (* (* (* (+ x2 x1) x2) (- x1 x2)) (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))) (* (* (+ x2 x1) x2) (- (cube (+ x4 x3)) (cube (* x4 x3))))) (- x2 x3)) (* (* (* x1 (* (+ x2 x3) (- x2 x3))) (+ x2 x1)) (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))))) (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (- (+ (- x1) x3) (+ x4 x2))))))
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ x2 x1)) (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))) (+ (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* (- (+ x2 x1) (- x3 x4)) (* x3 (+ (+ x2 x1) (- x3 x4))))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))) (* (- (* (+ (* (* (* (+ x2 x1) x2) (- x1 x2)) (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))) (* (* (+ x2 x1) x2) (- (cube (+ x4 x3)) (cube (* x4 x3))))) (- x2 x3)) (* (* (* x1 (* (+ x2 x3) (- x2 x3))) (+ x2 x1)) (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))))) (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (- (+ (- x1) x3) (+ x4 x2))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (76 enodes)
* * [misc]simplify:  iters left: 4 (226 enodes)
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (+ x2 x1)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4)))) (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x1) (- (- x3 x4) x2)))))
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (+ x2 x1)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4)))) (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x1) (- (- x3 x4) x2)))))
* * * * [misc]progress:  [ 99 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (170 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* (* x2 (+ x2 x1)) (- (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (* x4 x3)))) (* (* (* (- x1 x2) (+ x2 x1)) (+ (* x4 x3) (+ x4 x3))) x2)) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (* (+ (cube x2) (cube x3)) x1) (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3))))) (* (+ (+ x2 x1) (- x3 x4)) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))))) (* (* (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3))) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* x3 (- (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (- x3 x4))))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))))
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* (* x2 (+ x2 x1)) (- (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (* x4 x3)))) (* (* (* (- x1 x2) (+ x2 x1)) (+ (* x4 x3) (+ x4 x3))) x2)) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (* (+ (cube x2) (cube x3)) x1) (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3))))) (* (+ (+ x2 x1) (- x3 x4)) (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))))) (* (* (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3))) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2))) (* x3 (- (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (- x3 x4))))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (78 enodes)
* * [misc]simplify:  iters left: 4 (254 enodes)
* [exit]simplify:  Simplified to (* (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (+ x3 x4) (* x4 x3)))))
* [exit]simplify:  Simplified to (* (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (+ x3 x4) (* x4 x3)))))
* * * * [misc]progress:  [ 100 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (53 enodes)
* * [misc]simplify:  iters left: 5 (151 enodes)
* * [misc]simplify:  iters left: 4 (425 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (- (+ (- x1) x3) (+ x4 x2)))) (- (* (* (- x2 x3) x2) (* (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3))) (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (* (* (- x2 x3) (* x1 (+ x2 x3))) (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3)))))) (* (+ (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* (- (+ x2 x1) (- x3 x4)) (* x3 (+ (+ x2 x1) (- x3 x4))))) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (+ (+ x2 x1) (- x3 x4))) (* x1 x4))) (* (* (- x2 x3) (+ x2 x1)) (+ (* x4 x3) (+ x4 x3)))))
* [exit]simplify:  Simplified to (+ (* (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (- (+ (- x1) x3) (+ x4 x2)))) (- (* (* (- x2 x3) x2) (* (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3))) (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (* (* (- x2 x3) (* x1 (+ x2 x3))) (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3)))))) (* (+ (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* (- (+ x2 x1) (- x3 x4)) (* x3 (+ (+ x2 x1) (- x3 x4))))) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (+ (+ x2 x1) (- x3 x4))) (* x1 x4))) (* (* (- x2 x3) (+ x2 x1)) (+ (* x4 x3) (+ x4 x3)))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (64 enodes)
* * [misc]simplify:  iters left: 4 (195 enodes)
* * [misc]simplify:  iters left: 3 (464 enodes)
* [exit]simplify:  Simplified to (* (* (* (* (+ x2 x1) (- x2 x3)) (+ (+ x3 x4) (* x4 x3))) (+ (+ x2 x1) (- x3 x4))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* [exit]simplify:  Simplified to (* (* (* (* (+ x2 x1) (- x2 x3)) (+ (+ x3 x4) (* x4 x3))) (+ (+ x2 x1) (- x3 x4))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* * * * [misc]progress:  [ 101 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (55 enodes)
* * [misc]simplify:  iters left: 5 (153 enodes)
* * [misc]simplify:  iters left: 4 (389 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (- x1 x2) (- x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (* (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* x3 (- (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (- x3 x4))))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))) (* (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x1) (- (- x3 x4) x2)))) (- (* (* x2 (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (cube (- (+ x4 x3) (* x4 x3))) (cube (- x1 x2)))) (* (+ (* (- x1 x2) (- x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (* x1 (+ (cube x3) (cube x2)))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (- x1 x2) (- x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (* (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* x3 (- (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (- x3 x4))))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))) (* (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x1) (- (- x3 x4) x2)))) (- (* (* x2 (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (cube (- (+ x4 x3) (* x4 x3))) (cube (- x1 x2)))) (* (+ (* (- x1 x2) (- x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (* x1 (+ (cube x3) (cube x2)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (81 enodes)
* * [misc]simplify:  iters left: 4 (226 enodes)
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (* x2 x2) (* (- x3 x2) x3))) (+ (* (- x1 x2) (- x1 x2)) (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (+ x3 x4) (* x4 x3)))))))
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (* x2 x2) (* (- x3 x2) x3))) (+ (* (- x1 x2) (- x1 x2)) (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (+ x3 x4) (* x4 x3)))))))
* * * * [misc]progress:  [ 102 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (134 enodes)
* * [misc]simplify:  iters left: 4 (310 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x1) (- (- x3 x4) x2)))) (- (* (* (- x2 x3) x2) (+ (cube (- x1 x2)) (cube (- (+ x4 x3) (* x4 x3))))) (* (* (- x2 x3) (* x1 (+ x2 x3))) (- (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3))) (* (- x1 x2) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))))))) (* (+ (* (* (- x2 x3) (- x1 x2)) (- x1 x2)) (* (* (- x2 x3) (- (+ x4 x3) (* x4 x3))) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (* (+ (+ x2 x1) (- x3 x4)) (- (+ x2 x1) (- x3 x4))))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (+ (* (* x1 x4) (+ x2 x1)) (* (* x1 x4) (- x3 x4)))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x1) (- (- x3 x4) x2)))) (- (* (* (- x2 x3) x2) (+ (cube (- x1 x2)) (cube (- (+ x4 x3) (* x4 x3))))) (* (* (- x2 x3) (* x1 (+ x2 x3))) (- (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3))) (* (- x1 x2) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))))))) (* (+ (* (* (- x2 x3) (- x1 x2)) (- x1 x2)) (* (* (- x2 x3) (- (+ x4 x3) (* x4 x3))) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* x3 (* (+ (+ x2 x1) (- x3 x4)) (- (+ x2 x1) (- x3 x4))))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (+ (* (* x1 x4) (+ x2 x1)) (* (* x1 x4) (- x3 x4)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (67 enodes)
* * [misc]simplify:  iters left: 4 (175 enodes)
* * [misc]simplify:  iters left: 3 (441 enodes)
* [exit]simplify:  Simplified to (* (+ (* (* (- x2 x3) (- x1 x2)) (- x1 x2)) (* (* (- (+ x3 x4) (* x4 x3)) (- x2 x3)) (+ (- x4 (* x4 x3)) (- x3 (- x1 x2))))) (+ (* (+ (- x3 x4) (+ x2 x1)) (* x2 x2)) (* (* (+ (- x3 x4) (+ x2 x1)) (+ (- x3 x4) (- x1))) (+ x3 (- (- x1) (+ x2 x4))))))
* [exit]simplify:  Simplified to (* (+ (* (* (- x2 x3) (- x1 x2)) (- x1 x2)) (* (* (- (+ x3 x4) (* x4 x3)) (- x2 x3)) (+ (- x4 (* x4 x3)) (- x3 (- x1 x2))))) (+ (* (+ (- x3 x4) (+ x2 x1)) (* x2 x2)) (* (* (+ (- x3 x4) (+ x2 x1)) (+ (- x3 x4) (- x1))) (+ x3 (- (- x1) (+ x2 x4))))))
* * * * [misc]progress:  [ 103 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (51 enodes)
* * [misc]simplify:  iters left: 5 (142 enodes)
* * [misc]simplify:  iters left: 4 (371 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* (+ (* x2 x2) (* (- x3 x2) x3)) x2) (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3))))) (* (- (+ (* x4 x3) (- x1 x2)) (+ x4 x3)) (* (+ (cube x3) (cube x2)) x1))) (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (- (+ (- x1) x3) (+ x4 x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)))) (* (* (- (+ (* x4 x3) (- x1 x2)) (+ x4 x3)) (+ (* x2 x2) (* (- x3 x2) x3))) (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* (+ (+ x2 x1) (- x3 x4)) (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* (+ (* x2 x2) (* (- x3 x2) x3)) x2) (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3))))) (* (- (+ (* x4 x3) (- x1 x2)) (+ x4 x3)) (* (+ (cube x3) (cube x2)) x1))) (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (- (+ (- x1) x3) (+ x4 x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)))) (* (* (- (+ (* x4 x3) (- x1 x2)) (+ x4 x3)) (+ (* x2 x2) (* (- x3 x2) x3))) (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* (+ (+ x2 x1) (- x3 x4)) (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (75 enodes)
* * [misc]simplify:  iters left: 4 (199 enodes)
* [exit]simplify:  Simplified to (* (* (* (- (* x3 x3) (* x2 (- x3 x2))) (- (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (+ (+ x2 x1) (- x3 x4))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* [exit]simplify:  Simplified to (* (* (* (- (* x3 x3) (* x2 (- x3 x2))) (- (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (+ (+ x2 x1) (- x3 x4))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* * * * [misc]progress:  [ 104 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (48 enodes)
* * [misc]simplify:  iters left: 5 (123 enodes)
* * [misc]simplify:  iters left: 4 (299 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* x2 (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3)))) (- x2 x3))) (* (* (+ x2 x3) (* (- x2 x3) x1)) (- (- x1 (+ x2 x4)) (- x3 (* x4 x3))))) (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x1) (- (- x3 x4) x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)))) (* (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* (+ (+ x2 x1) (- x3 x4)) (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* x1 x4) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (+ (+ x2 x1) (- x3 x4))))) (* (- (- x1 (+ x2 x4)) (- x3 (* x4 x3))) (- x2 x3))))
* [exit]simplify:  Simplified to (+ (* (- (* x2 (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3)))) (- x2 x3))) (* (* (+ x2 x3) (* (- x2 x3) x1)) (- (- x1 (+ x2 x4)) (- x3 (* x4 x3))))) (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x1) (- (- x3 x4) x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)))) (* (+ (* (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* x2 (+ (- x3 x4) (- x1)))) (* (+ (+ x2 x1) (- x3 x4)) (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* x1 x4) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (+ (+ x2 x1) (- x3 x4))))) (* (- (- x1 (+ x2 x4)) (- x3 (* x4 x3))) (- x2 x3))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (61 enodes)
* * [misc]simplify:  iters left: 4 (154 enodes)
* * [misc]simplify:  iters left: 3 (403 enodes)
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (- (- (- x1 x2) x4) (- x3 (* x4 x3))) (* (- x2 x3) (+ (- x3 x4) (+ x2 x1)))))
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (- (- (- x1 x2) x4) (- x3 (* x4 x3))) (* (- x2 x3) (+ (- x3 x4) (+ x2 x1)))))
* * * * [misc]progress:  [ 105 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3)))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3))))
* * [misc]simplify:  iters left: 6 (47 enodes)
* * [misc]simplify:  iters left: 5 (137 enodes)
* * [misc]simplify:  iters left: 4 (358 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2)))) (* x3 (* (+ (+ x2 x1) (- x3 x4)) (- (+ x2 x1) (- x3 x4))))) (* (* (* (+ (+ x2 x1) (- x3 x4)) x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) x1)) (+ (sqr (* x2 (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3)))) (+ (* (* (* (+ x2 x3) x1) x2) (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3))) (sqr (* (+ x2 x3) x1))))) (* (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2)))) (- (cube (* x2 (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3)))) (cube (* (+ x2 x3) x1)))))
* [exit]simplify:  Simplified to (+ (* (+ (* (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2)))) (* x3 (* (+ (+ x2 x1) (- x3 x4)) (- (+ x2 x1) (- x3 x4))))) (* (* (* (+ (+ x2 x1) (- x3 x4)) x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) x1)) (+ (sqr (* x2 (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3)))) (+ (* (* (* (+ x2 x3) x1) x2) (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3))) (sqr (* (+ x2 x3) x1))))) (* (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2)))) (- (cube (* x2 (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3)))) (cube (* (+ x2 x3) x1)))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (94 enodes)
* * [misc]simplify:  iters left: 4 (254 enodes)
* [exit]simplify:  Simplified to (* (+ (* (* x2 (- (+ (+ x3 x4) (- x1 x2)) (* x4 x3))) (* x2 (- (+ (+ x3 x4) (- x1 x2)) (* x4 x3)))) (+ (* (* (* (+ x3 x2) x1) x2) (- (+ (+ x3 x4) (- x1 x2)) (* x4 x3))) (sqr (* (+ x3 x2) x1)))) (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (- (+ (- x1) x3) (+ x4 x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2))))
* [exit]simplify:  Simplified to (* (+ (* (* x2 (- (+ (+ x3 x4) (- x1 x2)) (* x4 x3))) (* x2 (- (+ (+ x3 x4) (- x1 x2)) (* x4 x3)))) (+ (* (* (* (+ x3 x2) x1) x2) (- (+ (+ x3 x4) (- x1 x2)) (* x4 x3))) (sqr (* (+ x3 x2) x1)))) (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (- (+ (- x1) x3) (+ x4 x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2))))
* * * * [misc]progress:  [ 106 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (43 enodes)
* * [misc]simplify:  iters left: 5 (129 enodes)
* * [misc]simplify:  iters left: 4 (334 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (+ x2 x3) x1) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))))) (+ (* (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2)))) (* (* x3 (+ (+ x2 x1) (- x3 x4))) (- (+ x2 x1) (- x3 x4)))) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (+ (+ x2 x1) (- x3 x4))) (* x1 x4)))) (* (* (- (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3)))) (* (+ x2 x3) x1)) (+ (* (+ x2 x3) x1) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3)))))) (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)))))
* [exit]simplify:  Simplified to (+ (* (+ (* (+ x2 x3) x1) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))))) (+ (* (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2)))) (* (* x3 (+ (+ x2 x1) (- x3 x4))) (- (+ x2 x1) (- x3 x4)))) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (+ (+ x2 x1) (- x3 x4))) (* x1 x4)))) (* (* (- (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3)))) (* (+ x2 x3) x1)) (+ (* (+ x2 x3) x1) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3)))))) (+ (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2))) (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (79 enodes)
* * [misc]simplify:  iters left: 4 (209 enodes)
* [exit]simplify:  Simplified to (* (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2)))) (+ (* x1 (+ x3 x2)) (* x2 (- (+ (+ x3 x4) (- x1 x2)) (* x4 x3)))))
* [exit]simplify:  Simplified to (* (+ (* (+ (+ x2 x1) (- x3 x4)) (* x2 x2)) (* (* (+ (+ x2 x1) (- x3 x4)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2)))) (+ (* x1 (+ x3 x2)) (* x2 (- (+ (+ x3 x4) (- x1 x2)) (* x4 x3)))))
* * * * [misc]progress:  [ 107 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (68 enodes)
* * [misc]simplify:  iters left: 5 (183 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (- (- x2 (- x1)) (- x3 x4)) (* x3 (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))))) (+ (* x1 x1) (* x2 (+ x2 x1))))) (* (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))) (- (- x2 (- x1)) (- x3 x4))) (- (* (+ (* x2 (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ (* x1 x1) (* x2 (+ x2 x1))))) (* (* x2 (- (cube x1) (cube x2))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))))) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (cube x3) (cube x2)) x1))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (- (- x2 (- x1)) (- x3 x4)) (* x3 (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))))) (+ (* x1 x1) (* x2 (+ x2 x1))))) (* (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))) (- (- x2 (- x1)) (- x3 x4))) (- (* (+ (* x2 (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ (* x1 x1) (* x2 (+ x2 x1))))) (* (* x2 (- (cube x1) (cube x2))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))))) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (cube x3) (cube x2)) x1))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (35 enodes)
* * [misc]simplify:  iters left: 5 (93 enodes)
* * [misc]simplify:  iters left: 4 (281 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 (- x1 x2)) (* x2 x2)) (+ (- x2 x3) (- x4 (- x1)))) (+ (* x3 (+ x3 x4)) (* x4 x4))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (sqr (+ x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 (- x1 x2)) (* x2 x2)) (+ (- x2 x3) (- x4 (- x1)))) (+ (* x3 (+ x3 x4)) (* x4 x4))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (sqr (+ x3 x4)))))
* * * * [misc]progress:  [ 108 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (66 enodes)
* * [misc]simplify:  iters left: 5 (166 enodes)
* * [misc]simplify:  iters left: 4 (480 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* (+ x3 x4) x4))) (- (- x2 (- x1)) (- x3 x4))) (- (* (* x2 (- x2 x3)) (+ (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (- (cube x1) (cube x2))) (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (cube (+ x3 x4)) (cube (* x4 x3)))))) (* (* x1 (* (+ x3 x2) (- x2 x3))) (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (+ (* x1 x1) (* x2 (+ x2 x1))))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (- x2 x3) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ (* x3 x3) (* (+ x3 x4) x4)) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (- (* x1 x1) (* x2 (- x1 x2)))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (* x1 x1) (* x2 (- x1 x2))))) (+ (* x3 x3) (* (+ x3 x4) x4))))))
* [exit]simplify:  Simplified to (+ (* (* (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* (+ x3 x4) x4))) (- (- x2 (- x1)) (- x3 x4))) (- (* (* x2 (- x2 x3)) (+ (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (- (cube x1) (cube x2))) (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (cube (+ x3 x4)) (cube (* x4 x3)))))) (* (* x1 (* (+ x3 x2) (- x2 x3))) (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (+ (* x1 x1) (* x2 (+ x2 x1))))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (- x2 x3) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ (* x3 x3) (* (+ x3 x4) x4)) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (- (* x1 x1) (* x2 (- x1 x2)))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (* x1 x1) (* x2 (- x1 x2))))) (+ (* x3 x3) (* (+ x3 x4) x4))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (81 enodes)
* * [misc]simplify:  iters left: 4 (244 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (- x2 x3) (- x4 (- x1))) (+ (sqr x3) (* (+ x3 x4) x4))) (+ (* (- x1 x2) x1) (* x2 x2))) (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (- x2 x3)) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (sqr (+ x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (+ (- x2 x3) (- x4 (- x1))) (+ (sqr x3) (* (+ x3 x4) x4))) (+ (* (- x1 x2) x1) (* x2 x2))) (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (- x2 x3)) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (sqr (+ x3 x4)))))
* * * * [misc]progress:  [ 109 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (64 enodes)
* * [misc]simplify:  iters left: 5 (176 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ (* x1 x1) (* x2 (+ x2 x1))) (+ (* x4 x3) (+ x3 x4)))) (+ (* (- x2 (+ (- x3 x4) (- x1))) (* x3 (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))) (* (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))) (- x2 (+ (- x3 x4) (- x1)))) (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* x2 (+ (* (* (+ (* x4 x3) (+ x3 x4)) (- (+ x3 x4) (* x4 x3))) (+ (* x1 x1) (* x2 (+ x2 x1)))) (* (+ (* x4 x3) (+ x3 x4)) (- (cube x1) (cube x2)))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (* x4 x3) (+ x3 x4)) (+ (cube x3) (cube x2)))) x1))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ (* x1 x1) (* x2 (+ x2 x1))) (+ (* x4 x3) (+ x3 x4)))) (+ (* (- x2 (+ (- x3 x4) (- x1))) (* x3 (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))) (* (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))) (- x2 (+ (- x3 x4) (- x1)))) (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* x2 (+ (* (* (+ (* x4 x3) (+ x3 x4)) (- (+ x3 x4) (* x4 x3))) (+ (* x1 x1) (* x2 (+ x2 x1)))) (* (+ (* x4 x3) (+ x3 x4)) (- (cube x1) (cube x2)))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (* x4 x3) (+ x3 x4)) (+ (cube x3) (cube x2)))) x1))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (31 enodes)
* * [misc]simplify:  iters left: 5 (83 enodes)
* * [misc]simplify:  iters left: 4 (282 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x3) (* (+ x3 x4) x4)) (+ (* (- x1 x2) x1) (* x2 x2))) (- x2 (+ (- x1) (- x3 x4)))) (* (+ (sqr x1) (* x2 (+ x1 x2))) (* (+ (+ x3 x4) (* x3 x4)) (- (sqr x3) (* x2 (- x3 x2))))))
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x3) (* (+ x3 x4) x4)) (+ (* (- x1 x2) x1) (* x2 x2))) (- x2 (+ (- x1) (- x3 x4)))) (* (+ (sqr x1) (* x2 (+ x1 x2))) (* (+ (+ x3 x4) (* x3 x4)) (- (sqr x3) (* x2 (- x3 x2))))))
* * * * [misc]progress:  [ 110 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (62 enodes)
* * [misc]simplify:  iters left: 5 (159 enodes)
* * [misc]simplify:  iters left: 4 (469 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (- x2 x3) (+ (* x4 x3) (+ x3 x4)))) (+ (* (* (- (- x2 (- x1)) (- x3 x4)) x3) (- (* (+ (* x3 x3) (* (+ x3 x4) x4)) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (- (* x1 x1) (* x2 (- x1 x2)))))) (* (* (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* (+ x3 x4) x4))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)))) (* (* (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* (+ x3 x4) x4))) (- (- x2 (- x1)) (- x3 x4))) (- (* (* (- x2 x3) x2) (+ (* (+ (* x4 x3) (+ x3 x4)) (- (cube x1) (cube x2))) (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (* (+ x3 x4) (+ x3 x4)) (sqr (* x4 x3)))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (+ (* x4 x3) (+ x3 x4))) (* x1 (* (+ x3 x2) (- x2 x3)))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (- x2 x3) (+ (* x4 x3) (+ x3 x4)))) (+ (* (* (- (- x2 (- x1)) (- x3 x4)) x3) (- (* (+ (* x3 x3) (* (+ x3 x4) x4)) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (- (* x1 x1) (* x2 (- x1 x2)))))) (* (* (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* (+ x3 x4) x4))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)))) (* (* (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* (+ x3 x4) x4))) (- (- x2 (- x1)) (- x3 x4))) (- (* (* (- x2 x3) x2) (+ (* (+ (* x4 x3) (+ x3 x4)) (- (cube x1) (cube x2))) (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (* (+ x3 x4) (+ x3 x4)) (sqr (* x4 x3)))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (+ (* x4 x3) (+ x3 x4))) (* x1 (* (+ x3 x2) (- x2 x3)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (71 enodes)
* * [misc]simplify:  iters left: 4 (224 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (* (+ (+ x3 x4) (* x3 x4)) (- x2 x3))) (* (+ (sqr x3) (* (+ x3 x4) x4)) (+ (* x1 (- x1 x2)) (* x2 x2)))) (- x2 (+ (- x1) (- x3 x4))))
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (* (+ (+ x3 x4) (* x3 x4)) (- x2 x3))) (* (+ (sqr x3) (* (+ x3 x4) x4)) (+ (* x1 (- x1 x2)) (* x2 x2)))) (- x2 (+ (- x1) (- x3 x4))))
* * * * [misc]progress:  [ 111 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (66 enodes)
* * [misc]simplify:  iters left: 5 (182 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))) (- (- x2 (- x1)) (- x3 x4))) (- (* (+ (* (* x2 (+ x2 x1)) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (* x2 (- (* x1 x1) (* x2 x2))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4))))) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4))) (* (+ x2 x1) (* x1 (+ (cube x3) (cube x2))))))) (* (* (* (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4))) (+ x2 x1)) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (- (- x2 (- x1)) (- x3 x4)) (* x3 (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (+ (* x3 x3) (* x4 (+ x3 x4))) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))) (- (- x2 (- x1)) (- x3 x4))) (- (* (+ (* (* x2 (+ x2 x1)) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (* x2 (- (* x1 x1) (* x2 x2))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4))))) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4))) (* (+ x2 x1) (* x1 (+ (cube x3) (cube x2))))))) (* (* (* (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4))) (+ x2 x1)) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (- (- x2 (- x1)) (- x3 x4)) (* x3 (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (+ (* x3 x3) (* x4 (+ x3 x4))) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (90 enodes)
* * [misc]simplify:  iters left: 4 (271 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x3) (* x4 (+ x3 x4))) (- (- x2 (- x1)) (- x3 x4))) (+ (* x1 (- x1 x2)) (* x2 x2))) (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ x1 x2)) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (sqr (+ x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x3) (* x4 (+ x3 x4))) (- (- x2 (- x1)) (- x3 x4))) (+ (* x1 (- x1 x2)) (* x2 x2))) (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ x1 x2)) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (sqr (+ x3 x4)))))
* * * * [misc]progress:  [ 112 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (64 enodes)
* * [misc]simplify:  iters left: 5 (165 enodes)
* * [misc]simplify:  iters left: 4 (448 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ x2 x1) (- x2 x3)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4)))) (+ (* (* (+ (- x2 x3) (- x4 (- x1))) x3) (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))) (* (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))) (+ (- x2 x3) (- x4 (- x1)))) (- (* (* (- x2 x3) x2) (+ (* (+ x2 x1) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (- (* x1 x1) (* x2 x2)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4)))))) (* (* (* (- x2 x3) (* (+ x3 x2) x1)) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4)))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ x2 x1) (- x2 x3)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4)))) (+ (* (* (+ (- x2 x3) (- x4 (- x1))) x3) (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))) (* (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))) (+ (- x2 x3) (- x4 (- x1)))) (- (* (* (- x2 x3) x2) (+ (* (+ x2 x1) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (- (* x1 x1) (* x2 x2)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4)))))) (* (* (* (- x2 x3) (* (+ x3 x2) x1)) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (31 enodes)
* * [misc]simplify:  iters left: 5 (78 enodes)
* * [misc]simplify:  iters left: 4 (218 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 (+ x3 x4)) (* x4 x4)) (+ (* x1 (- x1 x2)) (* x2 x2))) (- x2 (+ (- x1) (- x3 x4)))) (* (* (- x2 x3) (+ x1 x2)) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (sqr (+ x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 (+ x3 x4)) (* x4 x4)) (+ (* x1 (- x1 x2)) (* x2 x2))) (- x2 (+ (- x1) (- x3 x4)))) (* (* (- x2 x3) (+ x1 x2)) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (sqr (+ x3 x4)))))
* * * * [misc]progress:  [ 113 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (62 enodes)
* * [misc]simplify:  iters left: 5 (175 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1))) (+ (* (- x2 (+ (- x3 x4) (- x1))) (* x3 (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))) (* (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))) (- x2 (+ (- x3 x4) (- x1)))) (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (+ (+ x3 x4) (* x4 x3)) (- (* x1 x1) (* x2 x2))) (* (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1)) (- (+ x3 x4) (* x4 x3))))) x2) (* (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1)) (* x1 (+ (cube x3) (cube x2)))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1))) (+ (* (- x2 (+ (- x3 x4) (- x1))) (* x3 (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))) (* (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))) (- x2 (+ (- x3 x4) (- x1)))) (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (+ (+ x3 x4) (* x4 x3)) (- (* x1 x1) (* x2 x2))) (* (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1)) (- (+ x3 x4) (* x4 x3))))) x2) (* (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1)) (* x1 (+ (cube x3) (cube x2)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (80 enodes)
* * [misc]simplify:  iters left: 4 (247 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 (- x1 x2)) (* x2 x2)) (- (- x2 (- x1)) (- x3 x4))) (+ (sqr x3) (* x4 (+ x3 x4)))) (* (- (sqr x3) (* x2 (- x3 x2))) (* (+ (* x3 x4) (+ x3 x4)) (+ x1 x2))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 (- x1 x2)) (* x2 x2)) (- (- x2 (- x1)) (- x3 x4))) (+ (sqr x3) (* x4 (+ x3 x4)))) (* (- (sqr x3) (* x2 (- x3 x2))) (* (+ (* x3 x4) (+ x3 x4)) (+ x1 x2))))
* * * * [misc]progress:  [ 114 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (60 enodes)
* * [misc]simplify:  iters left: 5 (158 enodes)
* * [misc]simplify:  iters left: 4 (438 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ x2 x1)) (+ (+ x3 x4) (* x4 x3))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))) (* (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))) (- (- x2 (- x1)) (- x3 x4))) (- (* (* (- x2 x3) x2) (* (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1)) (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (* (* (* (+ x3 x2) x1) (- x2 x3)) (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1))))))
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ x2 x1)) (+ (+ x3 x4) (* x4 x3))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))) (* (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))) (- (- x2 (- x1)) (- x3 x4))) (- (* (* (- x2 x3) x2) (* (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1)) (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (* (* (* (+ x3 x2) x1) (- x2 x3)) (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (68 enodes)
* * [misc]simplify:  iters left: 4 (204 enodes)
* [exit]simplify:  Simplified to (* (* (* (* (- x2 x3) (+ x1 x2)) (+ (* x3 x4) (+ x3 x4))) (+ (- x2 x3) (- x4 (- x1)))) (* (+ (sqr x3) (* x4 (+ x3 x4))) (+ (* x1 (- x1 x2)) (* x2 x2))))
* [exit]simplify:  Simplified to (* (* (* (* (- x2 x3) (+ x1 x2)) (+ (* x3 x4) (+ x3 x4))) (+ (- x2 x3) (- x4 (- x1)))) (* (+ (sqr x3) (* x4 (+ x3 x4))) (+ (* x1 (- x1 x2)) (* x2 x2))))
* * * * [misc]progress:  [ 115 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (62 enodes)
* * [misc]simplify:  iters left: 5 (159 enodes)
* * [misc]simplify:  iters left: 4 (460 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* (+ x3 x4) x4))) (- x2 (+ (- x3 x4) (- x1)))) (- (* (* x2 (+ (* x2 x2) (* (- x3 x2) x3))) (+ (cube (- (+ x3 x4) (* x4 x3))) (cube (- x1 x2)))) (* (+ (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3))) (sqr (- x1 x2))) (* x1 (+ (cube x3) (cube x2)))))) (* (* (+ (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3))) (sqr (- x1 x2))) (+ (* x2 x2) (* (- x3 x2) x3))) (+ (* (* (- x2 (+ (- x3 x4) (- x1))) x3) (- (* (+ (* x3 x3) (* (+ x3 x4) x4)) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (- (* x1 x1) (* x2 (- x1 x2)))))) (* (* (* (* x1 x4) (- (* x1 x1) (* x2 (- x1 x2)))) (* (- x2 (+ (- x3 x4) (- x1))) (+ x2 (+ (- x3 x4) (- x1))))) (+ (* x3 x3) (* (+ x3 x4) x4))))))
* [exit]simplify:  Simplified to (+ (* (* (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* (+ x3 x4) x4))) (- x2 (+ (- x3 x4) (- x1)))) (- (* (* x2 (+ (* x2 x2) (* (- x3 x2) x3))) (+ (cube (- (+ x3 x4) (* x4 x3))) (cube (- x1 x2)))) (* (+ (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3))) (sqr (- x1 x2))) (* x1 (+ (cube x3) (cube x2)))))) (* (* (+ (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3))) (sqr (- x1 x2))) (+ (* x2 x2) (* (- x3 x2) x3))) (+ (* (* (- x2 (+ (- x3 x4) (- x1))) x3) (- (* (+ (* x3 x3) (* (+ x3 x4) x4)) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (- (* x1 x1) (* x2 (- x1 x2)))))) (* (* (* (* x1 x4) (- (* x1 x1) (* x2 (- x1 x2)))) (* (- x2 (+ (- x3 x4) (- x1))) (+ x2 (+ (- x3 x4) (- x1))))) (+ (* x3 x3) (* (+ x3 x4) x4))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (81 enodes)
* * [misc]simplify:  iters left: 4 (234 enodes)
* [exit]simplify:  Simplified to (* (- (- x2 (- x1)) (- x3 x4)) (* (* (* (+ (sqr x3) (* x4 (+ x3 x4))) (+ (* x1 (- x1 x2)) (* x2 x2))) (- (sqr x3) (* x2 (- x3 x2)))) (+ (* (- x1 x2) (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4)))))))
* [exit]simplify:  Simplified to (* (- (- x2 (- x1)) (- x3 x4)) (* (* (* (+ (sqr x3) (* x4 (+ x3 x4))) (+ (* x1 (- x1 x2)) (* x2 x2))) (- (sqr x3) (* x2 (- x3 x2)))) (+ (* (- x1 x2) (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4)))))))
* * * * [misc]progress:  [ 116 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (60 enodes)
* * [misc]simplify:  iters left: 5 (142 enodes)
* * [misc]simplify:  iters left: 4 (358 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- x2 x3) (- (+ x3 x4) (* x4 x3))) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (* (- x2 x3) (- x1 x2)) (- x1 x2))) (+ (* (* (+ (- x2 x3) (- x4 (- x1))) x3) (- (* (+ (* x3 x3) (* (+ x3 x4) x4)) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (- (* x1 x1) (* x2 (- x1 x2)))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* (+ x3 x4) x4)))))) (* (- (* (* (- x2 x3) x2) (+ (cube (- (+ x3 x4) (* x4 x3))) (cube (- x1 x2)))) (* (* (* (- x2 x3) (+ x3 x2)) x1) (+ (* (- (+ x3 x4) (* x4 x3)) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (sqr (- x1 x2))))) (* (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* (+ x3 x4) x4))) (+ (- x2 x3) (- x4 (- x1))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- x2 x3) (- (+ x3 x4) (* x4 x3))) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (* (- x2 x3) (- x1 x2)) (- x1 x2))) (+ (* (* (+ (- x2 x3) (- x4 (- x1))) x3) (- (* (+ (* x3 x3) (* (+ x3 x4) x4)) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (- (* x1 x1) (* x2 (- x1 x2)))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* (+ x3 x4) x4)))))) (* (- (* (* (- x2 x3) x2) (+ (cube (- (+ x3 x4) (* x4 x3))) (cube (- x1 x2)))) (* (* (* (- x2 x3) (+ x3 x2)) x1) (+ (* (- (+ x3 x4) (* x4 x3)) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (sqr (- x1 x2))))) (* (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* (+ x3 x4) x4))) (+ (- x2 x3) (- x4 (- x1))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (31 enodes)
* * [misc]simplify:  iters left: 5 (69 enodes)
* * [misc]simplify:  iters left: 4 (183 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x3) (* x4 (+ x3 x4))) (+ (* x1 (- x1 x2)) (* x2 x2))) (- x2 (+ (- x1) (- x3 x4)))) (+ (* (* (- x2 x3) (- (+ x3 x4) (* x3 x4))) (+ (- x4 (* x3 x4)) (- x3 (- x1 x2)))) (* (- x2 x3) (* (- x1 x2) (- x1 x2)))))
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x3) (* x4 (+ x3 x4))) (+ (* x1 (- x1 x2)) (* x2 x2))) (- x2 (+ (- x1) (- x3 x4)))) (+ (* (* (- x2 x3) (- (+ x3 x4) (* x3 x4))) (+ (- x4 (* x3 x4)) (- x3 (- x1 x2)))) (* (- x2 x3) (* (- x1 x2) (- x1 x2)))))
* * * * [misc]progress:  [ 117 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (58 enodes)
* * [misc]simplify:  iters left: 5 (148 enodes)
* * [misc]simplify:  iters left: 4 (418 enodes)
* [exit]simplify:  Simplified to (+ (* (* (- (* x3 x3) (* x2 (- x3 x2))) (- (- (- x1 x2) x3) (- x4 (* x4 x3)))) (+ (* (* (- x2 (+ (- x3 x4) (- x1))) x3) (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* (- x1 x2) x1))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (+ (* x2 x2) (* (- x1 x2) x1)) (+ (* x3 x3) (* x4 (+ x3 x4))))))) (* (- (* (- (sqr (- x1 x2)) (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3)))) (+ (* (* x3 (- x3 x2)) x2) (cube x2))) (* (- (- (- x1 x2) x3) (- x4 (* x4 x3))) (* (+ (cube x3) (cube x2)) x1))) (* (* (+ (* x2 x2) (* (- x1 x2) x1)) (+ (* x3 x3) (* x4 (+ x3 x4)))) (- x2 (+ (- x3 x4) (- x1))))))
* [exit]simplify:  Simplified to (+ (* (* (- (* x3 x3) (* x2 (- x3 x2))) (- (- (- x1 x2) x3) (- x4 (* x4 x3)))) (+ (* (* (- x2 (+ (- x3 x4) (- x1))) x3) (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* (- x1 x2) x1))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (+ (* x2 x2) (* (- x1 x2) x1)) (+ (* x3 x3) (* x4 (+ x3 x4))))))) (* (- (* (- (sqr (- x1 x2)) (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3)))) (+ (* (* x3 (- x3 x2)) x2) (cube x2))) (* (- (- (- x1 x2) x3) (- x4 (* x4 x3))) (* (+ (cube x3) (cube x2)) x1))) (* (* (+ (* x2 x2) (* (- x1 x2) x1)) (+ (* x3 x3) (* x4 (+ x3 x4)))) (- x2 (+ (- x3 x4) (- x1))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (75 enodes)
* * [misc]simplify:  iters left: 4 (200 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x3) (* x4 (+ x3 x4))) (+ (* x1 (- x1 x2)) (* x2 x2))) (- x2 (+ (- x1) (- x3 x4)))) (* (- (sqr x3) (* x2 (- x3 x2))) (- (- (- x1 x2) x4) (- x3 (* x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x3) (* x4 (+ x3 x4))) (+ (* x1 (- x1 x2)) (* x2 x2))) (- x2 (+ (- x1) (- x3 x4)))) (* (- (sqr x3) (* x2 (- x3 x2))) (- (- (- x1 x2) x4) (- x3 (* x3 x4)))))
* * * * [misc]progress:  [ 118 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (131 enodes)
* * [misc]simplify:  iters left: 4 (344 enodes)
* [exit]simplify:  Simplified to (+ (* (* (- (- x1 x2) (- (+ x3 x4) (* x4 x3))) (- x2 x3)) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (- (* x1 x1) (* x2 (- x1 x2)))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))) (* (* (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))) (- (- x2 (- x1)) (- x3 x4))) (- (* x2 (* (* (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))) (- x2 x3)) (- (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (- (- x1 x2) (- (+ x3 x4) (* x4 x3))) (* (+ x3 x2) (* (- x2 x3) x1))))))
* [exit]simplify:  Simplified to (+ (* (* (- (- x1 x2) (- (+ x3 x4) (* x4 x3))) (- x2 x3)) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (- (* x1 x1) (* x2 (- x1 x2)))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))) (* (* (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))) (- (- x2 (- x1)) (- x3 x4))) (- (* x2 (* (* (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))) (- x2 x3)) (- (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (- (- x1 x2) (- (+ x3 x4) (* x4 x3))) (* (+ x3 x2) (* (- x2 x3) x1))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (63 enodes)
* * [misc]simplify:  iters left: 4 (165 enodes)
* * [misc]simplify:  iters left: 3 (453 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (- (- x1 x2) (+ x3 x4)) (* x3 x4)) (- x2 x3)) (* (+ (* x3 (+ x3 x4)) (* x4 x4)) (+ (* x1 (- x1 x2)) (* x2 x2)))) (- (+ (- x2 x3) x4) (- x1)))
* [exit]simplify:  Simplified to (* (* (* (+ (- (- x1 x2) (+ x3 x4)) (* x3 x4)) (- x2 x3)) (* (+ (* x3 (+ x3 x4)) (* x4 x4)) (+ (* x1 (- x1 x2)) (* x2 x2)))) (- (+ (- x2 x3) x4) (- x1)))
* * * * [misc]progress:  [ 119 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3)))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (146 enodes)
* * [misc]simplify:  iters left: 4 (404 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (+ (sqr (* x1 (+ x3 x2))) (* (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))) (* (* x2 x1) (+ x3 x2)))) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))))) (+ (* (* (+ (- x2 x3) (- x4 (- x1))) x3) (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (- (* x1 x1) (* (- x1 x2) x2))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (- (* x1 x1) (* (- x1 x2) x2)) (+ (* x3 x3) (* x4 (+ x3 x4))))))) (* (* (* (- (* x1 x1) (* (- x1 x2) x2)) (+ (* x3 x3) (* x4 (+ x3 x4)))) (+ (- x2 x3) (- x4 (- x1)))) (- (cube (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (cube (* x1 (+ x3 x2))))))
* [exit]simplify:  Simplified to (+ (* (+ (+ (sqr (* x1 (+ x3 x2))) (* (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))) (* (* x2 x1) (+ x3 x2)))) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))))) (+ (* (* (+ (- x2 x3) (- x4 (- x1))) x3) (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (- (* x1 x1) (* (- x1 x2) x2))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (- (* x1 x1) (* (- x1 x2) x2)) (+ (* x3 x3) (* x4 (+ x3 x4))))))) (* (* (* (- (* x1 x1) (* (- x1 x2) x2)) (+ (* x3 x3) (* x4 (+ x3 x4)))) (+ (- x2 x3) (- x4 (- x1)))) (- (cube (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (cube (* x1 (+ x3 x2))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (94 enodes)
* * [misc]simplify:  iters left: 4 (255 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x3) (* x4 (+ x3 x4))) (+ (* x1 (- x1 x2)) (* x2 x2))) (- x2 (+ (- x1) (- x3 x4)))) (+ (* (* x2 (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2))) (* x2 (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2)))) (+ (* (* (* (+ x2 x3) x1) x2) (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2))) (* (* (+ x2 x3) x1) (* (+ x2 x3) x1)))))
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x3) (* x4 (+ x3 x4))) (+ (* x1 (- x1 x2)) (* x2 x2))) (- x2 (+ (- x1) (- x3 x4)))) (+ (* (* x2 (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2))) (* x2 (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2)))) (+ (* (* (* (+ x2 x3) x1) x2) (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2))) (* (* (+ x2 x3) x1) (* (+ x2 x3) x1)))))
* * * * [misc]progress:  [ 120 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (138 enodes)
* * [misc]simplify:  iters left: 4 (374 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3))) (* x2 (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3)))) (sqr (* (+ x3 x2) x1))) (* (* (- (* x1 x1) (* (- x1 x2) x2)) (+ (* x3 x3) (* x4 (+ x3 x4)))) (+ (- x2 x3) (- x4 (- x1))))) (* (+ (* x2 (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3))) (* (+ x3 x2) x1)) (+ (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (- (* x1 x1) (* (- x1 x2) x2))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (- (* x1 x1) (* (- x1 x2) x2)) (+ (* x3 x3) (* x4 (+ x3 x4))))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3))) (* x2 (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3)))) (sqr (* (+ x3 x2) x1))) (* (* (- (* x1 x1) (* (- x1 x2) x2)) (+ (* x3 x3) (* x4 (+ x3 x4)))) (+ (- x2 x3) (- x4 (- x1))))) (* (+ (* x2 (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3))) (* (+ x3 x2) x1)) (+ (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (- (* x1 x1) (* (- x1 x2) x2))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (- (* x1 x1) (* (- x1 x2) x2)) (+ (* x3 x3) (* x4 (+ x3 x4))))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (80 enodes)
* * [misc]simplify:  iters left: 4 (208 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 (- x1 x2)) (* x2 x2)) (- (- x2 (- x1)) (- x3 x4))) (+ (sqr x3) (* x4 (+ x3 x4)))) (+ (* x2 (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2))) (* (+ x2 x3) x1)))
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 (- x1 x2)) (* x2 x2)) (- (- x2 (- x1)) (- x3 x4))) (+ (sqr x3) (* x4 (+ x3 x4)))) (+ (* x2 (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2))) (* (+ x2 x3) x1)))
* * * * [misc]progress:  [ 121 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (65 enodes)
* * [misc]simplify:  iters left: 5 (177 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4))) (+ (* x2 (+ x2 x1)) (* x1 x1)))) (+ (* x3 (* (- x2 (+ (- x3 x4) (- x1))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4)))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (* (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (- x2 (+ (- x3 x4) (- x1)))) (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4))) (* (- (cube x1) (cube x2)) x2)) (* (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ (* x2 (+ x2 x1)) (* x1 x1))) x2))) (* (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4))) (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (* (+ (cube x2) (cube x3)) x1))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4))) (+ (* x2 (+ x2 x1)) (* x1 x1)))) (+ (* x3 (* (- x2 (+ (- x3 x4) (- x1))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4)))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (* (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (- x2 (+ (- x3 x4) (- x1)))) (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4))) (* (- (cube x1) (cube x2)) x2)) (* (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ (* x2 (+ x2 x1)) (* x1 x1))) x2))) (* (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (sqr (+ x3 x4))) (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (* (+ (cube x2) (cube x3)) x1))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (32 enodes)
* * [misc]simplify:  iters left: 5 (87 enodes)
* * [misc]simplify:  iters left: 4 (274 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))) (* (* (+ x3 x4) (- x2 (+ (- x1) (- x3 x4)))) (+ (* x1 (- x1 x2)) (* x2 x2))))
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))) (* (* (+ x3 x4) (- x2 (+ (- x1) (- x3 x4)))) (+ (* x1 (- x1 x2)) (* x2 x2))))
* * * * [misc]progress:  [ 122 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (62 enodes)
* * [misc]simplify:  iters left: 5 (158 enodes)
* * [misc]simplify:  iters left: 4 (432 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (- x2 x3)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4))))) (* (* (* (+ (- x2 x3) (- x4 (- x1))) (+ x3 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))) (- (* (* (- x2 x3) x2) (+ (* (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4))) (- (cube x1) (cube x2))) (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (- (cube (+ x3 x4)) (cube (* x4 x3)))))) (* (* (* x1 (* (+ x3 x2) (- x2 x3))) (+ (* x2 (+ x2 x1)) (* x1 x1))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4)))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (- x2 x3)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4))))) (* (* (* (+ (- x2 x3) (- x4 (- x1))) (+ x3 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))) (- (* (* (- x2 x3) x2) (+ (* (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4))) (- (cube x1) (cube x2))) (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (- (cube (+ x3 x4)) (cube (* x4 x3)))))) (* (* (* x1 (* (+ x3 x2) (- x2 x3))) (+ (* x2 (+ x2 x1)) (* x1 x1))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (74 enodes)
* * [misc]simplify:  iters left: 4 (204 enodes)
* [exit]simplify:  Simplified to (* (* (+ x3 x4) (* (+ (* (- x1 x2) x1) (* x2 x2)) (- (- x2 (- x1)) (- x3 x4)))) (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (- x2 x3)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))))
* [exit]simplify:  Simplified to (* (* (+ x3 x4) (* (+ (* (- x1 x2) x1) (* x2 x2)) (- (- x2 (- x1)) (- x3 x4)))) (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (- x2 x3)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))))
* * * * [misc]progress:  [ 123 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (61 enodes)
* * [misc]simplify:  iters left: 5 (170 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (- x2 (+ (- x3 x4) (- x1)))) (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (- (cube x1) (cube x2)) (+ (+ x3 x4) (* x4 x3))) (* (* (+ (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (+ (* x2 (+ x1 x2)) (* x1 x1))))) x2) (* (* (+ (* x2 (+ x1 x2)) (* x1 x1)) (+ (+ x3 x4) (* x4 x3))) (* x1 (+ (cube x3) (cube x2)))))) (* (* (+ (* x2 (+ x1 x2)) (* x1 x1)) (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (+ x3 x4) (* x4 x3)))) (+ (* x3 (* (- x2 (+ (- x3 x4) (- x1))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4)))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (- x2 (+ (- x3 x4) (- x1)))) (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (- (cube x1) (cube x2)) (+ (+ x3 x4) (* x4 x3))) (* (* (+ (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (+ (* x2 (+ x1 x2)) (* x1 x1))))) x2) (* (* (+ (* x2 (+ x1 x2)) (* x1 x1)) (+ (+ x3 x4) (* x4 x3))) (* x1 (+ (cube x3) (cube x2)))))) (* (* (+ (* x2 (+ x1 x2)) (* x1 x1)) (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (+ x3 x4) (* x4 x3)))) (+ (* x3 (* (- x2 (+ (- x3 x4) (- x1))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4)))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (28 enodes)
* * [misc]simplify:  iters left: 5 (76 enodes)
* * [misc]simplify:  iters left: 4 (234 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (+ x3 x4) (* x3 x4)) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* x3 (- x3 x2)) (* x2 x2))) (* (- (- x2 (- x1)) (- x3 x4)) (* (+ x3 x4) (+ (* x1 (- x1 x2)) (* x2 x2)))))
* [exit]simplify:  Simplified to (* (* (* (+ (+ x3 x4) (* x3 x4)) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* x3 (- x3 x2)) (* x2 x2))) (* (- (- x2 (- x1)) (- x3 x4)) (* (+ x3 x4) (+ (* x1 (- x1 x2)) (* x2 x2)))))
* * * * [misc]progress:  [ 124 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (58 enodes)
* * [misc]simplify:  iters left: 5 (151 enodes)
* * [misc]simplify:  iters left: 4 (415 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (- x2 (+ (- x3 x4) (- x1)))) (- (* (* (- x2 x3) x2) (+ (* (- (sqr (+ x3 x4)) (* (* x4 x3) (* x4 x3))) (+ (* x2 (+ x2 x1)) (* x1 x1))) (* (- (cube x1) (cube x2)) (+ (+ x3 x4) (* x4 x3))))) (* (* (- x2 x3) (* x1 (+ x3 x2))) (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (+ (+ x3 x4) (* x4 x3)))))) (* (* (* (- x2 x3) (+ (+ x3 x4) (* x4 x3))) (+ (* x2 (+ x2 x1)) (* x1 x1))) (+ (* (* (- x2 (+ (- x3 x4) (- x1))) x3) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (- x2 (+ (- x3 x4) (- x1)))) (- (* (* (- x2 x3) x2) (+ (* (- (sqr (+ x3 x4)) (* (* x4 x3) (* x4 x3))) (+ (* x2 (+ x2 x1)) (* x1 x1))) (* (- (cube x1) (cube x2)) (+ (+ x3 x4) (* x4 x3))))) (* (* (- x2 x3) (* x1 (+ x3 x2))) (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (+ (+ x3 x4) (* x4 x3)))))) (* (* (* (- x2 x3) (+ (+ x3 x4) (* x4 x3))) (+ (* x2 (+ x2 x1)) (* x1 x1))) (+ (* (* (- x2 (+ (- x3 x4) (- x1))) x3) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (62 enodes)
* * [misc]simplify:  iters left: 4 (179 enodes)
* * [misc]simplify:  iters left: 3 (490 enodes)
* [exit]simplify:  Simplified to (* (* (* (* (- x2 x3) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x1) (* (+ x1 x2) x2))) (+ (- x2 x3) (- x4 (- x1)))) (* (+ x3 x4) (+ (* (- x1 x2) x1) (* x2 x2))))
* [exit]simplify:  Simplified to (* (* (* (* (- x2 x3) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x1) (* (+ x1 x2) x2))) (+ (- x2 x3) (- x4 (- x1)))) (* (+ x3 x4) (+ (* (- x1 x2) x1) (* x2 x2))))
* * * * [misc]progress:  [ 125 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (63 enodes)
* * [misc]simplify:  iters left: 5 (176 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4)))) x3) (- (- x2 (- x1)) (- x3 x4))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* x2 x2) (* x3 (- x3 x2))) (* (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))) (+ x2 x1)))) (* (* (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (- (- x2 (- x1)) (- x3 x4))) (- (* (+ (* (* x2 (+ x2 x1)) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (* x2 (- (* x1 x1) (* x2 x2))) (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))))) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (* (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))) (+ x2 x1)) (* (+ (cube x2) (cube x3)) x1)))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4)))) x3) (- (- x2 (- x1)) (- x3 x4))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* x2 x2) (* x3 (- x3 x2))) (* (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))) (+ x2 x1)))) (* (* (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (- (- x2 (- x1)) (- x3 x4))) (- (* (+ (* (* x2 (+ x2 x1)) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (* x2 (- (* x1 x1) (* x2 x2))) (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))))) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (* (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))) (+ x2 x1)) (* (+ (cube x2) (cube x3)) x1)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (84 enodes)
* * [misc]simplify:  iters left: 4 (254 enodes)
* [exit]simplify:  Simplified to (* (* (* (- (sqr x3) (* x2 (- x3 x2))) (+ x1 x2)) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (* (+ (* x1 (- x1 x2)) (* x2 x2)) (- x2 (+ (- x1) (- x3 x4)))) (+ x3 x4)))
* [exit]simplify:  Simplified to (* (* (* (- (sqr x3) (* x2 (- x3 x2))) (+ x1 x2)) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (* (+ (* x1 (- x1 x2)) (* x2 x2)) (- x2 (+ (- x1) (- x3 x4)))) (+ x3 x4)))
* * * * [misc]progress:  [ 126 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (60 enodes)
* * [misc]simplify:  iters left: 5 (157 enodes)
* * [misc]simplify:  iters left: 4 (403 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ x2 x1)) (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (- (* x1 x1) (* x2 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))))) (* (* (* (- (- x2 (- x1)) (- x3 x4)) (+ x3 x4)) (- (* x1 x1) (* x2 (- x1 x2)))) (- (* (* x2 (- x2 x3)) (+ (* (- (* x1 x1) (* x2 x2)) (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))) (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ x2 x1)))) (* (* (* (* (- x2 x3) (+ x3 x2)) x1) (+ x2 x1)) (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))))))
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ x2 x1)) (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (- (* x1 x1) (* x2 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))))) (* (* (* (- (- x2 (- x1)) (- x3 x4)) (+ x3 x4)) (- (* x1 x1) (* x2 (- x1 x2)))) (- (* (* x2 (- x2 x3)) (+ (* (- (* x1 x1) (* x2 x2)) (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))) (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ x2 x1)))) (* (* (* (* (- x2 x3) (+ x3 x2)) x1) (+ x2 x1)) (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (71 enodes)
* * [misc]simplify:  iters left: 4 (190 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ x1 x2) (- x2 x3)) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (+ x3 x4) (* (+ (* (- x1 x2) x1) (* x2 x2)) (- x2 (+ (- x1) (- x3 x4))))))
* [exit]simplify:  Simplified to (* (* (* (+ x1 x2) (- x2 x3)) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (+ x3 x4) (* (+ (* (- x1 x2) x1) (* x2 x2)) (- x2 (+ (- x1) (- x3 x4))))))
* * * * [misc]progress:  [ 127 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (59 enodes)
* * [misc]simplify:  iters left: 5 (169 enodes)
* * [misc]simplify:  iters left: 4 (490 enodes)
* [exit]simplify:  Simplified to (+ (* (* (- (* x3 x3) (* x2 (- x3 x2))) (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1))) (+ (* (* (+ (- x2 x3) (- x4 (- x1))) x3) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (- (* (* x2 (- (* x3 x3) (* x2 (- x3 x2)))) (* (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1)) (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1)) (* x1 (+ (cube x2) (cube x3))))) (* (* (+ x3 x4) (+ (- x2 x3) (- x4 (- x1)))) (+ (* x2 x2) (* x1 (- x1 x2))))))
* [exit]simplify:  Simplified to (+ (* (* (- (* x3 x3) (* x2 (- x3 x2))) (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1))) (+ (* (* (+ (- x2 x3) (- x4 (- x1))) x3) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (- (* (* x2 (- (* x3 x3) (* x2 (- x3 x2)))) (* (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1)) (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1)) (* x1 (+ (cube x2) (cube x3))))) (* (* (+ x3 x4) (+ (- x2 x3) (- x4 (- x1)))) (+ (* x2 x2) (* x1 (- x1 x2))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (73 enodes)
* * [misc]simplify:  iters left: 4 (219 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4)))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ x3 x4)) (+ (* (- x1 x2) x1) (* x2 x2))))
* [exit]simplify:  Simplified to (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4)))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ x3 x4)) (+ (* (- x1 x2) x1) (* x2 x2))))
* * * * [misc]progress:  [ 128 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (150 enodes)
* * [misc]simplify:  iters left: 4 (403 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2)))) (- (- x2 (- x1)) (- x3 x4))) (- (* (* (- x2 x3) x2) (* (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1)) (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (* (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1)) (* (+ x3 x2) (* (- x2 x3) x1))))) (* (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (- (* x1 x1) (* x2 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4))) (* (* (+ x2 x1) (- x2 x3)) (+ (+ x3 x4) (* x4 x3)))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2)))) (- (- x2 (- x1)) (- x3 x4))) (- (* (* (- x2 x3) x2) (* (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1)) (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (* (* (+ (+ x3 x4) (* x4 x3)) (+ x2 x1)) (* (+ x3 x2) (* (- x2 x3) x1))))) (* (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (- (* x1 x1) (* x2 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4))) (* (* (+ x2 x1) (- x2 x3)) (+ (+ x3 x4) (* x4 x3)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (59 enodes)
* * [misc]simplify:  iters left: 4 (159 enodes)
* * [misc]simplify:  iters left: 3 (405 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (+ x3 x4) (* x3 x4)) (* (- x2 x3) (+ x1 x2))) (+ x3 x4)) (* (+ (* (- x1 x2) x1) (* x2 x2)) (- x2 (+ (- x1) (- x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (+ (+ x3 x4) (* x3 x4)) (* (- x2 x3) (+ x1 x2))) (+ x3 x4)) (* (+ (* (- x1 x2) x1) (* x2 x2)) (- x2 (+ (- x1) (- x3 x4)))))
* * * * [misc]progress:  [ 129 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (59 enodes)
* * [misc]simplify:  iters left: 5 (153 enodes)
* * [misc]simplify:  iters left: 4 (397 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) x2) (+ (cube (- x1 x2)) (cube (- (+ x3 x4) (* x4 x3))))) (* (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (* x1 (+ (cube x2) (cube x3))))) (* (* (- x2 (+ (- x3 x4) (- x1))) (+ x3 x4)) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (+ (* (* (- x2 (+ (- x3 x4) (- x1))) x3) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* x2 x2) (* x3 (- x3 x2))) (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) x2) (+ (cube (- x1 x2)) (cube (- (+ x3 x4) (* x4 x3))))) (* (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (* x1 (+ (cube x2) (cube x3))))) (* (* (- x2 (+ (- x3 x4) (- x1))) (+ x3 x4)) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (+ (* (* (- x2 (+ (- x3 x4) (- x1))) x3) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* x2 x2) (* x3 (- x3 x2))) (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (74 enodes)
* * [misc]simplify:  iters left: 4 (197 enodes)
* * [misc]simplify:  iters left: 3 (455 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* (- x1 x2) x1) (* x2 x2)) (- (+ (- x2 x3) x4) (- x1))) (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ x3 x4))) (- (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))) (* (- (+ x3 x4) (+ (* x3 x4) (- x1 x2))) (- x1 x2))))
* [exit]simplify:  Simplified to (* (* (* (+ (* (- x1 x2) x1) (* x2 x2)) (- (+ (- x2 x3) x4) (- x1))) (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ x3 x4))) (- (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))) (* (- (+ x3 x4) (+ (* x3 x4) (- x1 x2))) (- x1 x2))))
* * * * [misc]progress:  [ 130 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (134 enodes)
* * [misc]simplify:  iters left: 4 (313 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- x2 x3) (- x1 x2)) (- x1 x2)) (* (* (- x2 x3) (- (+ x3 x4) (* x4 x3))) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (* (* (- (- x2 (- x1)) (- x3 x4)) (+ x3 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))) (- (* (* x2 (- x2 x3)) (+ (cube (- x1 x2)) (cube (- (+ x3 x4) (* x4 x3))))) (* (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (* (+ x3 x2) (* (- x2 x3) x1))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- x2 x3) (- x1 x2)) (- x1 x2)) (* (* (- x2 x3) (- (+ x3 x4) (* x4 x3))) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (* (* (- (- x2 (- x1)) (- x3 x4)) (+ x3 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))) (- (* (* x2 (- x2 x3)) (+ (cube (- x1 x2)) (cube (- (+ x3 x4) (* x4 x3))))) (* (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (* (+ x3 x2) (* (- x2 x3) x1))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (60 enodes)
* * [misc]simplify:  iters left: 4 (146 enodes)
* * [misc]simplify:  iters left: 3 (351 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* (- x1 x2) x1) (* x2 x2)) (+ (- (- x2 x3) (- x1)) x4)) (* (- x2 x3) (+ x3 x4))) (- (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))) (- (* (- x1 x2) (- (+ x3 x4) (* x3 x4))) (sqr (- x1 x2)))))
* [exit]simplify:  Simplified to (* (* (* (+ (* (- x1 x2) x1) (* x2 x2)) (+ (- (- x2 x3) (- x1)) x4)) (* (- x2 x3) (+ x3 x4))) (- (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))) (- (* (- x1 x2) (- (+ x3 x4) (* x3 x4))) (sqr (- x1 x2)))))
* * * * [misc]progress:  [ 131 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (55 enodes)
* * [misc]simplify:  iters left: 5 (142 enodes)
* * [misc]simplify:  iters left: 4 (363 enodes)
* [exit]simplify:  Simplified to (+ (* (* (- (* x3 x3) (* x2 (- x3 x2))) (- (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (- (* x1 x1) (* x2 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (+ x3 x4) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (* x1 x1) (* x2 (- x1 x2)))))))) (* (* (* (- (- x2 (- x1)) (- x3 x4)) (+ x3 x4)) (- (* x1 x1) (* x2 (- x1 x2)))) (- (* (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3)))) x2) (- (* x3 x3) (* x2 (- x3 x2)))) (* (- (- x1 x2) (- (+ x3 x4) (* x4 x3))) (* (+ (cube x3) (cube x2)) x1)))))
* [exit]simplify:  Simplified to (+ (* (* (- (* x3 x3) (* x2 (- x3 x2))) (- (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (- (* x1 x1) (* x2 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (+ x3 x4) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (* x1 x1) (* x2 (- x1 x2)))))))) (* (* (* (- (- x2 (- x1)) (- x3 x4)) (+ x3 x4)) (- (* x1 x1) (* x2 (- x1 x2)))) (- (* (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3)))) x2) (- (* x3 x3) (* x2 (- x3 x2)))) (* (- (- x1 x2) (- (+ x3 x4) (* x4 x3))) (* (+ (cube x3) (cube x2)) x1)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (68 enodes)
* * [misc]simplify:  iters left: 4 (171 enodes)
* * [misc]simplify:  iters left: 3 (397 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (- (- x1 x2) (+ x3 x4)) (* x3 x4)) (- x2 (+ (- x1) (- x3 x4)))) (* (+ x3 x4) (+ (* (- x1 x2) x1) (* x2 x2)))) (- (sqr x3) (* (- x3 x2) x2)))
* [exit]simplify:  Simplified to (* (* (* (+ (- (- x1 x2) (+ x3 x4)) (* x3 x4)) (- x2 (+ (- x1) (- x3 x4)))) (* (+ x3 x4) (+ (* (- x1 x2) x1) (* x2 x2)))) (- (sqr x3) (* (- x3 x2) x2)))
* * * * [misc]progress:  [ 132 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (123 enodes)
* * [misc]simplify:  iters left: 4 (302 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (- (* x1 x1) (* x2 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2)))))) (* (- x2 x3) (- (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* (* (- (- x2 (- x1)) (- x3 x4)) (+ x3 x4)) (- (* x1 x1) (* x2 (- x1 x2)))) (- (* x2 (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3)))) (- x2 x3))) (* (* (+ x3 x2) (* (- x2 x3) x1)) (- (- x1 x2) (- (+ x3 x4) (* x4 x3)))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (- (* x1 x1) (* x2 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2)))))) (* (- x2 x3) (- (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* (* (- (- x2 (- x1)) (- x3 x4)) (+ x3 x4)) (- (* x1 x1) (* x2 (- x1 x2)))) (- (* x2 (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3)))) (- x2 x3))) (* (* (+ x3 x2) (* (- x2 x3) x1)) (- (- x1 x2) (- (+ x3 x4) (* x4 x3)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (54 enodes)
* * [misc]simplify:  iters left: 4 (126 enodes)
* * [misc]simplify:  iters left: 3 (305 enodes)
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (+ x3 x4)) (- (+ (- x1 x2) (* x3 x4)) (+ x3 x4))) (* (+ (* (- x1 x2) x1) (* x2 x2)) (- (+ (- x2 x3) x4) (- x1))))
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (+ x3 x4)) (- (+ (- x1 x2) (* x3 x4)) (+ x3 x4))) (* (+ (* (- x1 x2) x1) (* x2 x2)) (- (+ (- x2 x3) x4) (- x1))))
* * * * [misc]progress:  [ 133 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3)))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (138 enodes)
* * [misc]simplify:  iters left: 4 (369 enodes)
* [exit]simplify:  Simplified to (+ (* (- (cube (* (+ (+ (- x1 x2) x3) (- x4 (* x4 x3))) x2)) (cube (* (+ x3 x2) x1))) (* (* (+ x3 x4) (- (- x2 (- x1)) (- x3 x4))) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (+ x3 x4) (* (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))))) (+ (+ (* (* (* (+ x3 x2) x1) x2) (+ (+ (- x1 x2) x3) (- x4 (* x4 x3)))) (* (* (+ x3 x2) x1) (* (+ x3 x2) x1))) (sqr (* (+ (+ (- x1 x2) x3) (- x4 (* x4 x3))) x2)))))
* [exit]simplify:  Simplified to (+ (* (- (cube (* (+ (+ (- x1 x2) x3) (- x4 (* x4 x3))) x2)) (cube (* (+ x3 x2) x1))) (* (* (+ x3 x4) (- (- x2 (- x1)) (- x3 x4))) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (+ x3 x4) (* (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))))) (+ (+ (* (* (* (+ x3 x2) x1) x2) (+ (+ (- x1 x2) x3) (- x4 (* x4 x3)))) (* (* (+ x3 x2) x1) (* (+ x3 x2) x1))) (sqr (* (+ (+ (- x1 x2) x3) (- x4 (* x4 x3))) x2)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (85 enodes)
* * [misc]simplify:  iters left: 4 (218 enodes)
* [exit]simplify:  Simplified to (* (* (+ x3 x4) (* (- (sqr x1) (* (- x1 x2) x2)) (- x2 (+ (- x1) (- x3 x4))))) (+ (* (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2))))) (+ (* (* (* (+ x2 x3) x1) x2) (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (sqr (* (+ x2 x3) x1)))))
* [exit]simplify:  Simplified to (* (* (+ x3 x4) (* (- (sqr x1) (* (- x1 x2) x2)) (- x2 (+ (- x1) (- x3 x4))))) (+ (* (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2))))) (+ (* (* (* (+ x2 x3) x1) x2) (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (sqr (* (+ x2 x3) x1)))))
* * * * [misc]progress:  [ 134 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (48 enodes)
* * [misc]simplify:  iters left: 5 (130 enodes)
* * [misc]simplify:  iters left: 4 (334 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (- (+ x3 x4) (- (* x4 x3) (- x1 x2))) x2) (* x1 (+ x3 x2))) (- (* (- (+ x3 x4) (- (* x4 x3) (- x1 x2))) x2) (* x1 (+ x3 x2)))) (* (* (- x2 (+ (- x3 x4) (- x1))) (+ x3 x4)) (- (* x1 x1) (* x2 (- x1 x2))))) (* (+ (* (- (+ x3 x4) (- (* x4 x3) (- x1 x2))) x2) (* x1 (+ x3 x2))) (+ (* (* (- x2 (+ (- x3 x4) (- x1))) x3) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (- (* x1 x1) (* x2 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (- (+ x3 x4) (- (* x4 x3) (- x1 x2))) x2) (* x1 (+ x3 x2))) (- (* (- (+ x3 x4) (- (* x4 x3) (- x1 x2))) x2) (* x1 (+ x3 x2)))) (* (* (- x2 (+ (- x3 x4) (- x1))) (+ x3 x4)) (- (* x1 x1) (* x2 (- x1 x2))))) (* (+ (* (- (+ x3 x4) (- (* x4 x3) (- x1 x2))) x2) (* x1 (+ x3 x2))) (+ (* (* (- x2 (+ (- x3 x4) (- x1))) x3) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (- (* x1 x1) (* x2 (- x1 x2))) (- (* x3 x3) (* x4 x4))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (71 enodes)
* * [misc]simplify:  iters left: 4 (169 enodes)
* * [misc]simplify:  iters left: 3 (444 enodes)
* [exit]simplify:  Simplified to (* (+ (* (+ x2 x3) x1) (* x2 (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2)))) (* (* (+ x3 x4) (- x2 (+ (- x1) (- x3 x4)))) (+ (* (- x1 x2) x1) (* x2 x2))))
* [exit]simplify:  Simplified to (* (+ (* (+ x2 x3) x1) (* x2 (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2)))) (* (* (+ x3 x4) (- x2 (+ (- x1) (- x3 x4)))) (+ (* (- x1 x2) x1) (* x2 x2))))
* * * * [misc]progress:  [ 135 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (66 enodes)
* * [misc]simplify:  iters left: 5 (180 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* x2 (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (- (cube (+ x3 x4)) (cube (* x4 x3))))) (* (* x2 (- (cube x1) (cube x2))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))))) (+ (* x3 (- x3 x2)) (* x2 x2))) (* (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (+ (* x2 (+ x2 x1)) (* x1 x1))) (* x1 (+ (cube x3) (cube x2))))) (* (- (- x2 (- x1)) (- x3 x4)) (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1)))) (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (+ (* x3 (- x3 x2)) (* x2 x2)))) (+ (* x3 (* (- (- x2 (- x1)) (- x3 x4)) (- (* (- (* x2 x2) (* x1 x1)) (+ (* x3 x3) (* x4 (+ x3 x4)))) (* (- x2 x1) (- (cube x3) (cube x4)))))) (* (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))))))
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* x2 (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (- (cube (+ x3 x4)) (cube (* x4 x3))))) (* (* x2 (- (cube x1) (cube x2))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))))) (+ (* x3 (- x3 x2)) (* x2 x2))) (* (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (+ (* x2 (+ x2 x1)) (* x1 x1))) (* x1 (+ (cube x3) (cube x2))))) (* (- (- x2 (- x1)) (- x3 x4)) (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1)))) (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (+ (* x3 (- x3 x2)) (* x2 x2)))) (+ (* x3 (* (- (- x2 (- x1)) (- x3 x4)) (- (* (- (* x2 x2) (* x1 x1)) (+ (* x3 x3) (* x4 (+ x3 x4)))) (* (- x2 x1) (- (cube x3) (cube x4)))))) (* (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (89 enodes)
* * [misc]simplify:  iters left: 4 (240 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (- (sqr x3) (* x2 (- x3 x2)))) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (sqr (+ x3 x4)))) (* (* (+ (* x4 (+ x3 x4)) (sqr x3)) (- (- x2 (- x1)) (- x3 x4))) (- x2 x1)))
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (- (sqr x3) (* x2 (- x3 x2)))) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (sqr (+ x3 x4)))) (* (* (+ (* x4 (+ x3 x4)) (sqr x3)) (- (- x2 (- x1)) (- x3 x4))) (- x2 x1)))
* * * * [misc]progress:  [ 136 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (64 enodes)
* * [misc]simplify:  iters left: 5 (163 enodes)
* * [misc]simplify:  iters left: 4 (419 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* (- x2 x3) x2) (+ (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ (* x2 (+ x2 x1)) (* x1 x1))) (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (- (cube x1) (cube x2))))) (* (* (* (* (+ x3 x2) x1) (- x2 x3)) (+ (* x2 (+ x2 x1)) (* x1 x1))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))))) (* (+ (- x2 x3) (- x4 (- x1))) (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- x2 x1)))) (* (+ (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* (+ x3 x4) x3) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))))) (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (- x2 x3)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* (- x2 x3) x2) (+ (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ (* x2 (+ x2 x1)) (* x1 x1))) (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (- (cube x1) (cube x2))))) (* (* (* (* (+ x3 x2) x1) (- x2 x3)) (+ (* x2 (+ x2 x1)) (* x1 x1))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))))) (* (+ (- x2 x3) (- x4 (- x1))) (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- x2 x1)))) (* (+ (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* (+ x3 x4) x3) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))))) (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (- x2 x3)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (31 enodes)
* * [misc]simplify:  iters left: 5 (77 enodes)
* * [misc]simplify:  iters left: 4 (187 enodes)
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (sqr (+ x3 x4)))) (* (+ (* x4 (+ x3 x4)) (sqr x3)) (* (- x2 x1) (- x2 (+ (- x1) (- x3 x4))))))
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (sqr (+ x3 x4)))) (* (+ (* x4 (+ x3 x4)) (sqr x3)) (* (- x2 x1) (- x2 (+ (- x1) (- x3 x4))))))
* * * * [misc]progress:  [ 137 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (62 enodes)
* * [misc]simplify:  iters left: 5 (173 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* (+ (* (+ (* x4 x3) (+ x3 x4)) (- (cube x1) (cube x2))) (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (- (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (* x4 x3))))) (+ (* x2 x2) (* x3 (- x3 x2)))) x2) (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (* (+ (* x4 x3) (+ x3 x4)) (+ (cube x2) (cube x3)))) x1)) (* (- x2 (+ (- x3 x4) (- x1))) (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1)))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (+ (* x4 x3) (+ x3 x4)))) (+ (* (* (- x2 (+ (- x3 x4) (- x1))) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* x4 (+ x3 x4)))) (* (- x2 x1) (- (cube x3) (cube x4))))) x3) (* (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1)) (* (* (- x2 (+ (- x3 x4) (- x1))) (+ x2 (+ (- x3 x4) (- x1)))) (* x1 x4))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* (+ (* (+ (* x4 x3) (+ x3 x4)) (- (cube x1) (cube x2))) (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (- (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (* x4 x3))))) (+ (* x2 x2) (* x3 (- x3 x2)))) x2) (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (* (+ (* x4 x3) (+ x3 x4)) (+ (cube x2) (cube x3)))) x1)) (* (- x2 (+ (- x3 x4) (- x1))) (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1)))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (+ (* x4 x3) (+ x3 x4)))) (+ (* (* (- x2 (+ (- x3 x4) (- x1))) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* x4 (+ x3 x4)))) (* (- x2 x1) (- (cube x3) (cube x4))))) x3) (* (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1)) (* (* (- x2 (+ (- x3 x4) (- x1))) (+ x2 (+ (- x3 x4) (- x1)))) (* x1 x4))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (79 enodes)
* * [misc]simplify:  iters left: 4 (216 enodes)
* [exit]simplify:  Simplified to (* (* (* (- x2 x1) (+ (- x2 x3) (- x4 (- x1)))) (+ (* x4 (+ x3 x4)) (sqr x3))) (* (* (+ (* x3 x4) (+ x3 x4)) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (sqr x1) (* x2 (+ x1 x2)))))
* [exit]simplify:  Simplified to (* (* (* (- x2 x1) (+ (- x2 x3) (- x4 (- x1)))) (+ (* x4 (+ x3 x4)) (sqr x3))) (* (* (+ (* x3 x4) (+ x3 x4)) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (sqr x1) (* x2 (+ x1 x2)))))
* * * * [misc]progress:  [ 138 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (60 enodes)
* * [misc]simplify:  iters left: 5 (156 enodes)
* * [misc]simplify:  iters left: 4 (398 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- (- x2 (- x1)) (- x3 x4)) (- x2 x1)) (+ (* (+ x3 x4) x3) (* x4 x4))) (- (* (* (- x2 x3) x2) (+ (* (- (cube x1) (cube x2)) (+ (* x4 x3) (+ x3 x4))) (* (* (+ (* x4 x3) (+ x3 x4)) (- (+ x3 x4) (* x4 x3))) (+ (* x2 (+ x2 x1)) (* x1 x1))))) (* x1 (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (* (+ (* x4 x3) (+ x3 x4)) (* (- x2 x3) (+ x3 x2))))))) (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (* (- x2 x3) (+ (* x4 x3) (+ x3 x4)))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* (+ x3 x4) x3) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))))))))
* [exit]simplify:  Simplified to (+ (* (* (* (- (- x2 (- x1)) (- x3 x4)) (- x2 x1)) (+ (* (+ x3 x4) x3) (* x4 x4))) (- (* (* (- x2 x3) x2) (+ (* (- (cube x1) (cube x2)) (+ (* x4 x3) (+ x3 x4))) (* (* (+ (* x4 x3) (+ x3 x4)) (- (+ x3 x4) (* x4 x3))) (+ (* x2 (+ x2 x1)) (* x1 x1))))) (* x1 (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (* (+ (* x4 x3) (+ x3 x4)) (* (- x2 x3) (+ x3 x2))))))) (* (* (+ (* x2 (+ x2 x1)) (* x1 x1)) (* (- x2 x3) (+ (* x4 x3) (+ x3 x4)))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* (+ x3 x4) x3) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (67 enodes)
* * [misc]simplify:  iters left: 4 (173 enodes)
* [exit]simplify:  Simplified to (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (* (+ (* x3 x4) (+ x3 x4)) (- x2 x3))) (* (* (+ (- x2 x3) (- x4 (- x1))) (+ (* x4 (+ x3 x4)) (sqr x3))) (- x2 x1)))
* [exit]simplify:  Simplified to (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (* (+ (* x3 x4) (+ x3 x4)) (- x2 x3))) (* (* (+ (- x2 x3) (- x4 (- x1))) (+ (* x4 (+ x3 x4)) (sqr x3))) (- x2 x1)))
* * * * [misc]progress:  [ 139 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (63 enodes)
* * [misc]simplify:  iters left: 5 (174 enodes)
* * [misc]simplify:  iters left: 4 (465 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* (+ (- x2 x3) (- x4 (- x1))) x3) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* (+ x3 x4) x3) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))))) (* (* (+ x2 x1) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4))))) (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (* (+ (- x2 x3) (- x4 (- x1))) (- x2 x1))) (- (* (+ (* (* x2 (+ x2 x1)) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (* (* x2 (- x1 x2)) (+ x2 x1)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4))))) (- (* x3 x3) (* x2 (- x3 x2)))) (* (* (* (+ (cube x3) (cube x2)) x1) (+ x2 x1)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* (+ (- x2 x3) (- x4 (- x1))) x3) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* (+ x3 x4) x3) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))))) (* (* (+ x2 x1) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4))))) (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (* (+ (- x2 x3) (- x4 (- x1))) (- x2 x1))) (- (* (+ (* (* x2 (+ x2 x1)) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (* (* x2 (- x1 x2)) (+ x2 x1)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4))))) (- (* x3 x3) (* x2 (- x3 x2)))) (* (* (* (+ (cube x3) (cube x2)) x1) (+ x2 x1)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (82 enodes)
* * [misc]simplify:  iters left: 4 (231 enodes)
* [exit]simplify:  Simplified to (* (* (* (- (sqr x3) (* x2 (- x3 x2))) (+ x1 x2)) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (* x4 (+ x3 x4)) (sqr x3))) (- x2 x1)))
* [exit]simplify:  Simplified to (* (* (* (- (sqr x3) (* x2 (- x3 x2))) (+ x1 x2)) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (* x4 (+ x3 x4)) (sqr x3))) (- x2 x1)))
* * * * [misc]progress:  [ 140 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (60 enodes)
* * [misc]simplify:  iters left: 5 (155 enodes)
* * [misc]simplify:  iters left: 4 (381 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ x2 x1) (- x2 x3)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* (+ x3 x4) x3) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))))))) (* (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- (- x2 (- x1)) (- x3 x4))) (- x2 x1)) (- (* (* x2 (- x2 x3)) (+ (* (- (* x1 x1) (* x2 x2)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))) (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ x2 x1)))) (* (* (* (- x2 x3) (* x1 (+ x3 x2))) (+ x2 x1)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ x2 x1) (- x2 x3)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* (+ x3 x4) x3) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))))))) (* (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- (- x2 (- x1)) (- x3 x4))) (- x2 x1)) (- (* (* x2 (- x2 x3)) (+ (* (- (* x1 x1) (* x2 x2)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))) (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ x2 x1)))) (* (* (* (- x2 x3) (* x1 (+ x3 x2))) (+ x2 x1)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (68 enodes)
* * [misc]simplify:  iters left: 4 (159 enodes)
* * [misc]simplify:  iters left: 3 (373 enodes)
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (+ x1 x2)) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (* (+ (* x4 (+ x3 x4)) (sqr x3)) (- x2 (+ (- x1) (- x3 x4)))) (- x2 x1)))
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (+ x1 x2)) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (* (+ (* x4 (+ x3 x4)) (sqr x3)) (- x2 (+ (- x1) (- x3 x4)))) (- x2 x1)))
* * * * [misc]progress:  [ 141 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (59 enodes)
* * [misc]simplify:  iters left: 5 (167 enodes)
* * [misc]simplify:  iters left: 4 (447 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ (* x4 x3) (+ x3 x4)) (+ x2 x1))) (+ (* (* (- (- x2 (- x1)) (- x3 x4)) x3) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* (+ x3 x4) x3) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))))) (* (- (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) x2) (* (* (+ (* x4 x3) (+ x3 x4)) (+ x2 x1)) (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (* (* (+ (* x4 x3) (+ x3 x4)) (+ x2 x1)) (* x1 (+ (cube x2) (cube x3))))) (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- (- x2 (- x1)) (- x3 x4))) (- x2 x1))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ (* x4 x3) (+ x3 x4)) (+ x2 x1))) (+ (* (* (- (- x2 (- x1)) (- x3 x4)) x3) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* (+ x3 x4) x3) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))))) (* (- (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) x2) (* (* (+ (* x4 x3) (+ x3 x4)) (+ x2 x1)) (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (* (* (+ (* x4 x3) (+ x3 x4)) (+ x2 x1)) (* x1 (+ (cube x2) (cube x3))))) (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- (- x2 (- x1)) (- x3 x4))) (- x2 x1))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (72 enodes)
* * [misc]simplify:  iters left: 4 (199 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4)))) (* (* (- x2 x1) (- x2 (+ (- x1) (- x3 x4)))) (+ (* x4 (+ x3 x4)) (sqr x3))))
* [exit]simplify:  Simplified to (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4)))) (* (* (- x2 x1) (- x2 (+ (- x1) (- x3 x4)))) (+ (* x4 (+ x3 x4)) (sqr x3))))
* * * * [misc]progress:  [ 142 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (148 enodes)
* * [misc]simplify:  iters left: 4 (368 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 (+ (- x3 x4) (- x1))) (- x2 x1)) (+ (* (+ x3 x4) x3) (* x4 x4))) (- (* (* x2 (- x2 x3)) (* (* (+ (* x4 x3) (+ x3 x4)) (+ x2 x1)) (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (* (* (+ (* x4 x3) (+ x3 x4)) (+ x2 x1)) (* (* x1 (+ x3 x2)) (- x2 x3))))) (* (+ (* (* x3 (- x2 (+ (- x3 x4) (- x1)))) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* (+ x3 x4) x3) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)))) (* (* (- x2 x3) (+ x2 x1)) (+ (* x4 x3) (+ x3 x4)))))
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 (+ (- x3 x4) (- x1))) (- x2 x1)) (+ (* (+ x3 x4) x3) (* x4 x4))) (- (* (* x2 (- x2 x3)) (* (* (+ (* x4 x3) (+ x3 x4)) (+ x2 x1)) (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (* (* (+ (* x4 x3) (+ x3 x4)) (+ x2 x1)) (* (* x1 (+ x3 x2)) (- x2 x3))))) (* (+ (* (* x3 (- x2 (+ (- x3 x4) (- x1)))) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* (+ x3 x4) x3) (* x4 x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* (+ x3 x4) x3) (* x4 x4)) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)))) (* (* (- x2 x3) (+ x2 x1)) (+ (* x4 x3) (+ x3 x4)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (58 enodes)
* * [misc]simplify:  iters left: 4 (139 enodes)
* * [misc]simplify:  iters left: 3 (325 enodes)
* [exit]simplify:  Simplified to (* (* (* (- x2 x1) (- (+ (- x2 x3) x4) (- x1))) (+ (* x4 (+ x3 x4)) (sqr x3))) (* (* (- x2 x3) (+ x1 x2)) (+ (+ x3 x4) (* x3 x4))))
* [exit]simplify:  Simplified to (* (* (* (- x2 x1) (- (+ (- x2 x3) x4) (- x1))) (+ (* x4 (+ x3 x4)) (sqr x3))) (* (* (- x2 x3) (+ x1 x2)) (+ (+ x3 x4) (* x3 x4))))
* * * * [misc]progress:  [ 143 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (59 enodes)
* * [misc]simplify:  iters left: 5 (152 enodes)
* * [misc]simplify:  iters left: 4 (365 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (- (* x3 x3) (* x2 (- x3 x2)))) (+ (cube (- x1 x2)) (cube (- (+ x3 x4) (* x4 x3))))) (* (+ (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- x1 x2))) (* x1 (+ (cube x2) (cube x3))))) (* (* (- x2 (+ (- x3 x4) (- x1))) (- x2 x1)) (+ (* x3 x3) (* x4 (+ x3 x4))))) (* (+ (* (* x3 (- x2 (+ (- x3 x4) (- x1)))) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* x4 (+ x3 x4)))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1)) (* (* x1 x4) (* (- x2 (+ (- x3 x4) (- x1))) (+ x2 (+ (- x3 x4) (- x1))))))) (* (- (* x3 x3) (* x2 (- x3 x2))) (+ (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- x1 x2))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (- (* x3 x3) (* x2 (- x3 x2)))) (+ (cube (- x1 x2)) (cube (- (+ x3 x4) (* x4 x3))))) (* (+ (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- x1 x2))) (* x1 (+ (cube x2) (cube x3))))) (* (* (- x2 (+ (- x3 x4) (- x1))) (- x2 x1)) (+ (* x3 x3) (* x4 (+ x3 x4))))) (* (+ (* (* x3 (- x2 (+ (- x3 x4) (- x1)))) (- (* (* (- x2 x1) (+ x2 x1)) (+ (* x3 x3) (* x4 (+ x3 x4)))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1)) (* (* x1 x4) (* (- x2 (+ (- x3 x4) (- x1))) (+ x2 (+ (- x3 x4) (- x1))))))) (* (- (* x3 x3) (* x2 (- x3 x2))) (+ (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- x1 x2))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (73 enodes)
* * [misc]simplify:  iters left: 4 (178 enodes)
* * [misc]simplify:  iters left: 3 (375 enodes)
* [exit]simplify:  Simplified to (* (* (- x2 x1) (- x2 (+ (- x1) (- x3 x4)))) (* (+ (sqr (- x1 x2)) (* (- (+ x3 x4) (* x3 x4)) (- (- (+ x3 x4) (* x3 x4)) (- x1 x2)))) (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* x4 (+ x3 x4)) (sqr x3)))))
* [exit]simplify:  Simplified to (* (* (- x2 x1) (- x2 (+ (- x1) (- x3 x4)))) (* (+ (sqr (- x1 x2)) (* (- (+ x3 x4) (* x3 x4)) (- (- (+ x3 x4) (* x3 x4)) (- x1 x2)))) (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* x4 (+ x3 x4)) (sqr x3)))))
* * * * [misc]progress:  [ 144 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (133 enodes)
* * [misc]simplify:  iters left: 4 (287 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- x2 x3) (- (+ x3 x4) (* x4 x3))) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (* (- x2 x3) (- x1 x2)) (- x1 x2))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* x3 x3) (* x4 (+ x3 x4)))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))))) (* (* (+ (* x3 x3) (* x4 (+ x3 x4))) (* (- (- x2 (- x1)) (- x3 x4)) (- x2 x1))) (- (* (* x2 (- x2 x3)) (+ (cube (- x1 x2)) (cube (- (+ x3 x4) (* x4 x3))))) (* (+ (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- x1 x2))) (* (+ x3 x2) (* (- x2 x3) x1))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- x2 x3) (- (+ x3 x4) (* x4 x3))) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (* (- x2 x3) (- x1 x2)) (- x1 x2))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* x3 x3) (* x4 (+ x3 x4)))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* x3 x3) (* x4 (+ x3 x4))) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))))) (* (* (+ (* x3 x3) (* x4 (+ x3 x4))) (* (- (- x2 (- x1)) (- x3 x4)) (- x2 x1))) (- (* (* x2 (- x2 x3)) (+ (cube (- x1 x2)) (cube (- (+ x3 x4) (* x4 x3))))) (* (+ (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- x1 x2))) (* (+ x3 x2) (* (- x2 x3) x1))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (59 enodes)
* * [misc]simplify:  iters left: 4 (127 enodes)
* * [misc]simplify:  iters left: 3 (266 enodes)
* [exit]simplify:  Simplified to (* (+ (* (* (- x2 x3) (- x1 x2)) (- x1 x2)) (* (* (- (+ x3 x4) (* x3 x4)) (- x2 x3)) (- (+ x3 x4) (+ (* x3 x4) (- x1 x2))))) (* (- x2 x1) (* (+ (* x4 (+ x3 x4)) (sqr x3)) (- (- x2 (- x3 x4)) (- x1)))))
* [exit]simplify:  Simplified to (* (+ (* (* (- x2 x3) (- x1 x2)) (- x1 x2)) (* (* (- (+ x3 x4) (* x3 x4)) (- x2 x3)) (- (+ x3 x4) (+ (* x3 x4) (- x1 x2))))) (* (- x2 x1) (* (+ (* x4 (+ x3 x4)) (sqr x3)) (- (- x2 (- x3 x4)) (- x1)))))
* * * * [misc]progress:  [ 145 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (55 enodes)
* * [misc]simplify:  iters left: 5 (141 enodes)
* * [misc]simplify:  iters left: 4 (333 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (- (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (+ (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (* (- (* x2 x2) (* x1 x1)) (+ (* x3 x3) (* (+ x3 x4) x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))))) (* (* (+ (- x2 x3) (- x4 (- x1))) (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1))) (- (* (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3)))) x2) (+ (* x3 (- x3 x2)) (* x2 x2))) (* (- (- x1 x2) (- (+ x3 x4) (* x4 x3))) (* (+ (cube x3) (cube x2)) x1)))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (- (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (+ (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (* (- (* x2 x2) (* x1 x1)) (+ (* x3 x3) (* (+ x3 x4) x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))))) (* (* (+ (- x2 x3) (- x4 (- x1))) (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1))) (- (* (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3)))) x2) (+ (* x3 (- x3 x2)) (* x2 x2))) (* (- (- x1 x2) (- (+ x3 x4) (* x4 x3))) (* (+ (cube x3) (cube x2)) x1)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (67 enodes)
* * [misc]simplify:  iters left: 4 (152 enodes)
* * [misc]simplify:  iters left: 3 (317 enodes)
* [exit]simplify:  Simplified to (* (* (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (- x2 x3) (- x4 (- x1)))) (* (+ (* x4 (+ x3 x4)) (sqr x3)) (- x2 x1))) (+ (* (- x3 x2) x3) (* x2 x2)))
* [exit]simplify:  Simplified to (* (* (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (- x2 x3) (- x4 (- x1)))) (* (+ (* x4 (+ x3 x4)) (sqr x3)) (- x2 x1))) (+ (* (- x3 x2) x3) (* x2 x2)))
* * * * [misc]progress:  [ 146 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (122 enodes)
* * [misc]simplify:  iters left: 4 (276 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (* (- (* x2 x2) (* x1 x1)) (+ (* x3 x3) (* (+ x3 x4) x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))))) (* (- x2 x3) (- (+ (* x4 x3) (- x1 x2)) (+ x3 x4)))) (* (* (+ (- x2 x3) (- x4 (- x1))) (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1))) (- (* x2 (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3)))) (- x2 x3))) (* (* (- x2 x3) (* (+ x3 x2) x1)) (- (+ (* x4 x3) (- x1 x2)) (+ x3 x4))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (* (- (* x2 x2) (* x1 x1)) (+ (* x3 x3) (* (+ x3 x4) x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))))) (* (- x2 x3) (- (+ (* x4 x3) (- x1 x2)) (+ x3 x4)))) (* (* (+ (- x2 x3) (- x4 (- x1))) (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1))) (- (* x2 (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3)))) (- x2 x3))) (* (* (- x2 x3) (* (+ x3 x2) x1)) (- (+ (* x4 x3) (- x1 x2)) (+ x3 x4))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (53 enodes)
* * [misc]simplify:  iters left: 4 (107 enodes)
* * [misc]simplify:  iters left: 3 (231 enodes)
* [exit]simplify:  Simplified to (* (* (- x2 x1) (* (+ (* x4 (+ x3 x4)) (sqr x3)) (- (- x2 (- x3 x4)) (- x1)))) (* (- (- x1 (+ x4 x2)) (- x3 (* x3 x4))) (- x2 x3)))
* [exit]simplify:  Simplified to (* (* (- x2 x1) (* (+ (* x4 (+ x3 x4)) (sqr x3)) (- (- x2 (- x3 x4)) (- x1)))) (* (- (- x1 (+ x4 x2)) (- x3 (* x3 x4))) (- x2 x3)))
* * * * [misc]progress:  [ 147 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3)))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (137 enodes)
* * [misc]simplify:  iters left: 4 (347 enodes)
* [exit]simplify:  Simplified to (+ (* (- (cube (* (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3)) x2)) (cube (* (+ x3 x2) x1))) (* (* (- x2 (+ (- x3 x4) (- x1))) (+ (* x3 x3) (* (+ x3 x4) x4))) (- x2 x1))) (* (+ (* (* x3 (- x2 (+ (- x3 x4) (- x1)))) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* x3 x3) (* (+ x3 x4) x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))))) (+ (+ (* (* (* (+ x3 x2) x1) x2) (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3))) (* (* (+ x3 x2) x1) (* (+ x3 x2) x1))) (sqr (* (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3)) x2)))))
* [exit]simplify:  Simplified to (+ (* (- (cube (* (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3)) x2)) (cube (* (+ x3 x2) x1))) (* (* (- x2 (+ (- x3 x4) (- x1))) (+ (* x3 x3) (* (+ x3 x4) x4))) (- x2 x1))) (* (+ (* (* x3 (- x2 (+ (- x3 x4) (- x1)))) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* x3 x3) (* (+ x3 x4) x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))))) (+ (+ (* (* (* (+ x3 x2) x1) x2) (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3))) (* (* (+ x3 x2) x1) (* (+ x3 x2) x1))) (sqr (* (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3)) x2)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (86 enodes)
* * [misc]simplify:  iters left: 4 (205 enodes)
* * [misc]simplify:  iters left: 3 (484 enodes)
* [exit]simplify:  Simplified to (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (* x4 (+ x3 x4)) (sqr x3)) (- x2 x1))) (+ (* (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2))))) (+ (* (* (+ x2 x3) (* x1 x2)) (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (sqr (* (+ x2 x3) x1)))))
* [exit]simplify:  Simplified to (* (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (* x4 (+ x3 x4)) (sqr x3)) (- x2 x1))) (+ (* (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2))))) (+ (* (* (+ x2 x3) (* x1 x2)) (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (sqr (* (+ x2 x3) x1)))))
* * * * [misc]progress:  [ 148 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (48 enodes)
* * [misc]simplify:  iters left: 5 (129 enodes)
* * [misc]simplify:  iters left: 4 (308 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3)) x2) (* x1 (+ x3 x2))) (* (+ (* (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3)) x2) (* x1 (+ x3 x2))) (* (* (- (- x2 (- x1)) (- x3 x4)) (+ (* x3 x3) (* (+ x3 x4) x4))) (- x2 x1)))) (* (+ (* (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3)) x2) (* x1 (+ x3 x2))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (- (* x2 x2) (* x1 x1)) (+ (* x3 x3) (* (+ x3 x4) x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))))))
* [exit]simplify:  Simplified to (+ (* (- (* (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3)) x2) (* x1 (+ x3 x2))) (* (+ (* (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3)) x2) (* x1 (+ x3 x2))) (* (* (- (- x2 (- x1)) (- x3 x4)) (+ (* x3 x3) (* (+ x3 x4) x4))) (- x2 x1)))) (* (+ (* (- (+ (- x1 x2) (+ x3 x4)) (* x4 x3)) x2) (* x1 (+ x3 x2))) (+ (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (- (* x2 x2) (* x1 x1)) (+ (* x3 x3) (* (+ x3 x4) x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (+ (* x3 x3) (* (+ x3 x4) x4)) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (70 enodes)
* * [misc]simplify:  iters left: 4 (152 enodes)
* * [misc]simplify:  iters left: 3 (320 enodes)
* [exit]simplify:  Simplified to (* (+ (* (+ x2 x3) x1) (* x2 (- (+ (- x1 x2) (+ x3 x4)) (* x3 x4)))) (* (* (- x2 x1) (+ (- (- x2 x3) (- x1)) x4)) (+ (* x4 (+ x3 x4)) (sqr x3))))
* [exit]simplify:  Simplified to (* (+ (* (+ x2 x3) x1) (* x2 (- (+ (- x1 x2) (+ x3 x4)) (* x3 x4)))) (* (* (- x2 x1) (+ (- (- x2 x3) (- x1)) x4)) (+ (* x4 (+ x3 x4)) (sqr x3))))
* * * * [misc]progress:  [ 149 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (63 enodes)
* * [misc]simplify:  iters left: 5 (174 enodes)
* * [misc]simplify:  iters left: 4 (484 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (+ (* (* (+ x3 x4) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))) (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ x2 x1) (* (+ x3 x4) (- x2 x1))) (* (* (+ x3 x4) (- x2 x1)) (- x3 x4)))))) (* (- (* (+ (* (- (cube x1) (cube x2)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ (* x1 x1) (* x2 (+ x2 x1))))) (+ (* x3 (* (- x3 x2) x2)) (cube x2))) (* (* (* (+ (cube x2) (cube x3)) x1) (+ (* x1 x1) (* x2 (+ x2 x1)))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4))))) (* (* (+ x3 x4) (- x2 x1)) (- (- x2 (- x1)) (- x3 x4)))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (+ (* (* (+ x3 x4) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))) (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ x2 x1) (* (+ x3 x4) (- x2 x1))) (* (* (+ x3 x4) (- x2 x1)) (- x3 x4)))))) (* (- (* (+ (* (- (cube x1) (cube x2)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ (* x1 x1) (* x2 (+ x2 x1))))) (+ (* x3 (* (- x3 x2) x2)) (cube x2))) (* (* (* (+ (cube x2) (cube x3)) x1) (+ (* x1 x1) (* x2 (+ x2 x1)))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4))))) (* (* (+ x3 x4) (- x2 x1)) (- (- x2 (- x1)) (- x3 x4)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (83 enodes)
* * [misc]simplify:  iters left: 4 (235 enodes)
* [exit]simplify:  Simplified to (* (* (* (- x2 x1) (+ x3 x4)) (- x2 (+ (- x1) (- x3 x4)))) (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (sqr (+ x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (- x2 x1) (+ x3 x4)) (- x2 (+ (- x1) (- x3 x4)))) (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (sqr (+ x3 x4)))))
* * * * [misc]progress:  [ 150 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (60 enodes)
* * [misc]simplify:  iters left: 5 (155 enodes)
* * [misc]simplify:  iters left: 4 (373 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (- x2 x3)) (+ (* (- (cube x1) (cube x2)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ (* x1 x1) (* (+ x2 x1) x2))))) (* (* (* (* (- x2 x3) (+ x3 x2)) x1) (+ (* x1 x1) (* (+ x2 x1) x2))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4))))) (* (* (+ x3 x4) (- x2 x1)) (- (- x2 (- x1)) (- x3 x4)))) (* (+ (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (* x1 x4) (* (+ x3 x4) (- x2 x1)))) (* (* (- (- x2 (- x1)) (- x3 x4)) x3) (* (- x2 x1) (- (* (+ x2 x1) (+ x3 x4)) (- (* x3 x3) (* x4 x4)))))) (* (* (- x2 x3) (+ (* x1 x1) (* (+ x2 x1) x2))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (- x2 x3)) (+ (* (- (cube x1) (cube x2)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ (* x1 x1) (* (+ x2 x1) x2))))) (* (* (* (* (- x2 x3) (+ x3 x2)) x1) (+ (* x1 x1) (* (+ x2 x1) x2))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4))))) (* (* (+ x3 x4) (- x2 x1)) (- (- x2 (- x1)) (- x3 x4)))) (* (+ (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (* x1 x4) (* (+ x3 x4) (- x2 x1)))) (* (* (- (- x2 (- x1)) (- x3 x4)) x3) (* (- x2 x1) (- (* (+ x2 x1) (+ x3 x4)) (- (* x3 x3) (* x4 x4)))))) (* (* (- x2 x3) (+ (* x1 x1) (* (+ x2 x1) x2))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (70 enodes)
* * [misc]simplify:  iters left: 4 (171 enodes)
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (sqr (+ x3 x4)))) (* (* (- x2 x1) (+ x3 x4)) (- x2 (+ (- x1) (- x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (sqr (+ x3 x4)))) (* (* (- x2 x1) (+ x3 x4)) (- x2 (+ (- x1) (- x3 x4)))))
* * * * [misc]progress:  [ 151 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (59 enodes)
* * [misc]simplify:  iters left: 5 (167 enodes)
* * [misc]simplify:  iters left: 4 (458 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* (* x1 x4) (* (+ x3 x4) (- x2 x1))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (* (- x2 x1) (- (* (+ x3 x4) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (+ (+ x3 x4) (* x4 x3))) (+ (* x2 x2) (* (- x3 x2) x3)))) (* (* (* (+ x3 x4) (- x2 x1)) (+ (- x2 x3) (- x4 (- x1)))) (- (* (+ (* (* (+ (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (+ (* x1 x1) (* x2 (+ x2 x1)))) (* (+ (+ x3 x4) (* x4 x3)) (- (cube x1) (cube x2)))) (+ (cube x2) (* x3 (* (- x3 x2) x2)))) (* (* x1 (+ (+ x3 x4) (* x4 x3))) (* (+ (cube x3) (cube x2)) (+ (* x1 x1) (* x2 (+ x2 x1))))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* (* x1 x4) (* (+ x3 x4) (- x2 x1))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (* (- x2 x1) (- (* (+ x3 x4) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (+ (+ x3 x4) (* x4 x3))) (+ (* x2 x2) (* (- x3 x2) x3)))) (* (* (* (+ x3 x4) (- x2 x1)) (+ (- x2 x3) (- x4 (- x1)))) (- (* (+ (* (* (+ (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (+ (* x1 x1) (* x2 (+ x2 x1)))) (* (+ (+ x3 x4) (* x4 x3)) (- (cube x1) (cube x2)))) (+ (cube x2) (* x3 (* (- x3 x2) x2)))) (* (* x1 (+ (+ x3 x4) (* x4 x3))) (* (+ (cube x3) (cube x2)) (+ (* x1 x1) (* x2 (+ x2 x1))))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (72 enodes)
* * [misc]simplify:  iters left: 4 (200 enodes)
* [exit]simplify:  Simplified to (* (* (* (- x2 x1) (+ x3 x4)) (- x2 (+ (- x1) (- x3 x4)))) (* (+ (* x2 x2) (* x3 (- x3 x2))) (* (+ (sqr x1) (* x2 (+ x1 x2))) (+ (+ x3 x4) (* x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (- x2 x1) (+ x3 x4)) (- x2 (+ (- x1) (- x3 x4)))) (* (+ (* x2 x2) (* x3 (- x3 x2))) (* (+ (sqr x1) (* x2 (+ x1 x2))) (+ (+ x3 x4) (* x3 x4)))))
* * * * [misc]progress:  [ 152 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (148 enodes)
* * [misc]simplify:  iters left: 4 (351 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ x3 x4) (- x2 x1)) (+ (- x2 x3) (- x4 (- x1)))) (- (* (* (- x2 x3) x2) (+ (* (- (cube x1) (cube x2)) (+ (+ x3 x4) (* x4 x3))) (* (* (- (+ x3 x4) (* x4 x3)) (+ (+ x3 x4) (* x4 x3))) (+ (* x1 x1) (* x2 (+ x2 x1)))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (+ (+ x3 x4) (* x4 x3))) (* (* x1 (+ x3 x2)) (- x2 x3))))) (* (+ (* (* (+ x3 x4) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))))) (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (* (- x2 x1) (- (* (+ x3 x4) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (- x2 x3) (+ (+ x3 x4) (* x4 x3))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ x3 x4) (- x2 x1)) (+ (- x2 x3) (- x4 (- x1)))) (- (* (* (- x2 x3) x2) (+ (* (- (cube x1) (cube x2)) (+ (+ x3 x4) (* x4 x3))) (* (* (- (+ x3 x4) (* x4 x3)) (+ (+ x3 x4) (* x4 x3))) (+ (* x1 x1) (* x2 (+ x2 x1)))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (+ (+ x3 x4) (* x4 x3))) (* (* x1 (+ x3 x2)) (- x2 x3))))) (* (+ (* (* (+ x3 x4) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))))) (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (* (- x2 x1) (- (* (+ x3 x4) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (- x2 x3) (+ (+ x3 x4) (* x4 x3))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (58 enodes)
* * [misc]simplify:  iters left: 4 (140 enodes)
* * [misc]simplify:  iters left: 3 (468 enodes)
* [exit]simplify:  Simplified to (* (* (- x2 x3) (+ (* x1 (+ x1 x2)) (* x2 x2))) (* (* (+ (+ x3 x4) (* x3 x4)) (* (- x2 x1) (+ x3 x4))) (- (+ (- x2 x3) x4) (- x1))))
* [exit]simplify:  Simplified to (* (* (- x2 x3) (+ (* x1 (+ x1 x2)) (* x2 x2))) (* (* (+ (+ x3 x4) (* x3 x4)) (* (- x2 x1) (+ x3 x4))) (- (+ (- x2 x3) x4) (- x1))))
* * * * [misc]progress:  [ 153 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (60 enodes)
* * [misc]simplify:  iters left: 5 (168 enodes)
* * [misc]simplify:  iters left: 4 (434 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (+ (* x2 x2) (* (- x3 x2) x3))) (+ (* (+ x2 x1) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))) (* (+ x2 x1) (- x1 x2))))) (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))) (* (* (+ x2 x1) x1) (+ (cube x3) (cube x2))))) (* (* (+ x3 x4) (- x2 x1)) (+ (- x2 x3) (- x4 (- x1))))) (* (+ (* (* (+ x3 x4) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))) (* (* (+ (- x2 x3) (- x4 (- x1))) x3) (- (* (+ x2 x1) (* (+ x3 x4) (- x2 x1))) (* (* (+ x3 x4) (- x2 x1)) (- x3 x4))))) (* (* (+ x2 x1) (+ (* x2 x2) (* (- x3 x2) x3))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (+ (* x2 x2) (* (- x3 x2) x3))) (+ (* (+ x2 x1) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))) (* (+ x2 x1) (- x1 x2))))) (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))) (* (* (+ x2 x1) x1) (+ (cube x3) (cube x2))))) (* (* (+ x3 x4) (- x2 x1)) (+ (- x2 x3) (- x4 (- x1))))) (* (+ (* (* (+ x3 x4) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))) (* (* (+ (- x2 x3) (- x4 (- x1))) x3) (- (* (+ x2 x1) (* (+ x3 x4) (- x2 x1))) (* (* (+ x3 x4) (- x2 x1)) (- x3 x4))))) (* (* (+ x2 x1) (+ (* x2 x2) (* (- x3 x2) x3))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (76 enodes)
* * [misc]simplify:  iters left: 4 (203 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ x1 x2)) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))))) (* (* (- x2 x1) (+ x3 x4)) (+ (- x2 x3) (- x4 (- x1)))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ x1 x2)) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))))) (* (* (- x2 x1) (+ x3 x4)) (+ (- x2 x3) (- x4 (- x1)))))
* * * * [misc]progress:  [ 154 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (147 enodes)
* * [misc]simplify:  iters left: 4 (322 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* (- x2 x3) x2) (+ (* (+ x2 x1) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (* (- x1 x2) (+ x2 x1)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))))) (* (* (* (* x1 (+ x3 x2)) (- x2 x3)) (+ x2 x1)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))))) (* (* (+ x3 x4) (- x2 x1)) (- x2 (+ (- x3 x4) (- x1))))) (* (+ (* (* (* (- x2 x1) (+ x2 (+ (- x3 x4) (- x1)))) (* (- x2 (+ (- x3 x4) (- x1))) (* x1 x4))) (+ x3 x4)) (* (* (- x2 (+ (- x3 x4) (- x1))) x3) (* (- x2 x1) (- (* (+ x3 x4) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (- x2 x3) (+ x2 x1)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* (- x2 x3) x2) (+ (* (+ x2 x1) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (* (- x1 x2) (+ x2 x1)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))))))) (* (* (* (* x1 (+ x3 x2)) (- x2 x3)) (+ x2 x1)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))))) (* (* (+ x3 x4) (- x2 x1)) (- x2 (+ (- x3 x4) (- x1))))) (* (+ (* (* (* (- x2 x1) (+ x2 (+ (- x3 x4) (- x1)))) (* (- x2 (+ (- x3 x4) (- x1))) (* x1 x4))) (+ x3 x4)) (* (* (- x2 (+ (- x3 x4) (- x1))) x3) (* (- x2 x1) (- (* (+ x3 x4) (+ x2 x1)) (- (* x3 x3) (* x4 x4)))))) (* (* (- x2 x3) (+ x2 x1)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (61 enodes)
* * [misc]simplify:  iters left: 4 (137 enodes)
* * [misc]simplify:  iters left: 3 (420 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ x1 x2) (* (- x2 x1) (+ x3 x4))) (- x2 (+ (- x1) (- x3 x4)))) (* (- x2 x3) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))))
* [exit]simplify:  Simplified to (* (* (* (+ x1 x2) (* (- x2 x1) (+ x3 x4))) (- x2 (+ (- x1) (- x3 x4)))) (* (- x2 x3) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))))
* * * * [misc]progress:  [ 155 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (161 enodes)
* * [misc]simplify:  iters left: 4 (390 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ x3 x4) (- x2 x1)) (- (- x2 (- x1)) (- x3 x4))) (- (* (* (- (* x3 x3) (* x2 (- x3 x2))) x2) (* (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4))) (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* x1 (+ (* x4 x3) (+ x3 x4))) (* (+ (cube x3) (cube x2)) (+ x2 x1))))) (* (+ (* (* (+ x3 x4) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))) (* (* (- (- x2 (- x1)) (- x3 x4)) x3) (- (* (+ x2 x1) (* (+ x3 x4) (- x2 x1))) (* (* (+ x3 x4) (- x2 x1)) (- x3 x4))))) (* (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4))) (- (* x3 x3) (* x2 (- x3 x2))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ x3 x4) (- x2 x1)) (- (- x2 (- x1)) (- x3 x4))) (- (* (* (- (* x3 x3) (* x2 (- x3 x2))) x2) (* (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4))) (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* x1 (+ (* x4 x3) (+ x3 x4))) (* (+ (cube x3) (cube x2)) (+ x2 x1))))) (* (+ (* (* (+ x3 x4) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))) (* (* (- (- x2 (- x1)) (- x3 x4)) x3) (- (* (+ x2 x1) (* (+ x3 x4) (- x2 x1))) (* (* (+ x3 x4) (- x2 x1)) (- x3 x4))))) (* (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4))) (- (* x3 x3) (* x2 (- x3 x2))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (65 enodes)
* * [misc]simplify:  iters left: 4 (171 enodes)
* [exit]simplify:  Simplified to (* (* (* (- x2 x1) (+ x3 x4)) (- x2 (+ (- x1) (- x3 x4)))) (* (* (+ x1 x2) (+ (* x3 x4) (+ x3 x4))) (- (sqr x3) (* x2 (- x3 x2)))))
* [exit]simplify:  Simplified to (* (* (* (- x2 x1) (+ x3 x4)) (- x2 (+ (- x1) (- x3 x4)))) (* (* (+ x1 x2) (+ (* x3 x4) (+ x3 x4))) (- (sqr x3) (* x2 (- x3 x2)))))
* * * * [misc]progress:  [ 156 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (51 enodes)
* * [misc]simplify:  iters left: 5 (139 enodes)
* * [misc]simplify:  iters left: 4 (312 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ x2 x1)) (+ (* x4 x3) (+ x3 x4))) (+ (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (* (* x1 x4) (- x2 x1)) (+ x3 x4))) (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (* (+ x2 x1) (* (+ x3 x4) (- x2 x1))) (* (* (+ x3 x4) (- x2 x1)) (- x3 x4)))))) (* (* (* (+ x3 x4) (- x2 x1)) (+ (- x2 x3) (- x4 (- x1)))) (- (* (* (- x2 x3) x2) (* (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4))) (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x2) (* (- x2 x3) x1))))))
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ x2 x1)) (+ (* x4 x3) (+ x3 x4))) (+ (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (* (* x1 x4) (- x2 x1)) (+ x3 x4))) (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (* (+ x2 x1) (* (+ x3 x4) (- x2 x1))) (* (* (+ x3 x4) (- x2 x1)) (- x3 x4)))))) (* (* (* (+ x3 x4) (- x2 x1)) (+ (- x2 x3) (- x4 (- x1)))) (- (* (* (- x2 x3) x2) (* (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4))) (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x2) (* (- x2 x3) x1))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (19 enodes)
* * [misc]simplify:  iters left: 5 (49 enodes)
* * [misc]simplify:  iters left: 4 (118 enodes)
* * [misc]simplify:  iters left: 3 (308 enodes)
* [exit]simplify:  Simplified to (* (* (* (- x2 x1) (+ x3 x4)) (- x2 (+ (- x1) (- x3 x4)))) (* (+ (* x3 x4) (+ x3 x4)) (* (+ x1 x2) (- x2 x3))))
* [exit]simplify:  Simplified to (* (* (* (- x2 x1) (+ x3 x4)) (- x2 (+ (- x1) (- x3 x4)))) (* (+ (* x3 x4) (+ x3 x4)) (* (+ x1 x2) (- x2 x3))))
* * * * [misc]progress:  [ 157 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (146 enodes)
* * [misc]simplify:  iters left: 4 (332 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) x2) (+ (cube (- (+ x3 x4) (* x4 x3))) (cube (- x1 x2)))) (* (+ (* (- x1 x2) (- x1 x2)) (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3)))) (* x1 (+ (cube x3) (cube x2))))) (* (* (+ x3 x4) (- x2 x1)) (+ (- x2 x3) (- x4 (- x1))))) (* (+ (* (* (+ x3 x4) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))))) (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (* (- x2 x1) (* (+ x2 x1) (+ x3 x4))) (* (* (+ x3 x4) (- x2 x1)) (- x3 x4))))) (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (- x1 x2) (- x1 x2)) (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3)))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* (+ (* x2 x2) (* x3 (- x3 x2))) x2) (+ (cube (- (+ x3 x4) (* x4 x3))) (cube (- x1 x2)))) (* (+ (* (- x1 x2) (- x1 x2)) (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3)))) (* x1 (+ (cube x3) (cube x2))))) (* (* (+ x3 x4) (- x2 x1)) (+ (- x2 x3) (- x4 (- x1))))) (* (+ (* (* (+ x3 x4) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))))) (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (* (- x2 x1) (* (+ x2 x1) (+ x3 x4))) (* (* (+ x3 x4) (- x2 x1)) (- x3 x4))))) (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (- x1 x2) (- x1 x2)) (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (66 enodes)
* * [misc]simplify:  iters left: 4 (153 enodes)
* * [misc]simplify:  iters left: 3 (364 enodes)
* [exit]simplify:  Simplified to (* (- (+ (* (- x1 x2) (- x1 x2)) (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4)))) (* (- (+ x3 x4) (* x3 x4)) (- x1 x2))) (* (* (* (- x2 x1) (+ x3 x4)) (+ (- x2 x3) (- x4 (- x1)))) (+ (* x2 x2) (* (- x3 x2) x3))))
* [exit]simplify:  Simplified to (* (- (+ (* (- x1 x2) (- x1 x2)) (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4)))) (* (- (+ x3 x4) (* x3 x4)) (- x1 x2))) (* (* (* (- x2 x1) (+ x3 x4)) (+ (- x2 x3) (- x4 (- x1)))) (+ (* x2 x2) (* (- x3 x2) x3))))
* * * * [misc]progress:  [ 158 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (125 enodes)
* * [misc]simplify:  iters left: 4 (226 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ x3 x4) (- x2 x1)) (- (- x2 (- x1)) (- x3 x4))) (- (* (* x2 (- x2 x3)) (+ (cube (- (+ x3 x4) (* x4 x3))) (cube (- x1 x2)))) (* (* (- x2 x3) (* (+ x3 x2) x1)) (+ (* (- x1 x2) (- x1 x2)) (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3))))))) (* (+ (* (* (+ x3 x4) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))) (* (* (- (- x2 (- x1)) (- x3 x4)) x3) (* (- x2 x1) (- (* (+ x2 x1) (+ x3 x4)) (- (* x3 x3) (* x4 x4)))))) (+ (* (* (- x2 x3) (- (+ x3 x4) (* x4 x3))) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (- x2 x3) (* (- x1 x2) (- x1 x2))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ x3 x4) (- x2 x1)) (- (- x2 (- x1)) (- x3 x4))) (- (* (* x2 (- x2 x3)) (+ (cube (- (+ x3 x4) (* x4 x3))) (cube (- x1 x2)))) (* (* (- x2 x3) (* (+ x3 x2) x1)) (+ (* (- x1 x2) (- x1 x2)) (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3))))))) (* (+ (* (* (+ x3 x4) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))) (* (* (- (- x2 (- x1)) (- x3 x4)) x3) (* (- x2 x1) (- (* (+ x2 x1) (+ x3 x4)) (- (* x3 x3) (* x4 x4)))))) (+ (* (* (- x2 x3) (- (+ x3 x4) (* x4 x3))) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (- x2 x3) (* (- x1 x2) (- x1 x2))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (50 enodes)
* * [misc]simplify:  iters left: 4 (98 enodes)
* * [misc]simplify:  iters left: 3 (188 enodes)
* [exit]simplify:  Simplified to (* (* (* (- x2 x1) (+ x3 x4)) (- x2 (+ (- x1) (- x3 x4)))) (+ (* (- x1 x2) (* (- x2 x3) (- x1 x2))) (* (* (- (+ x3 x4) (* x3 x4)) (- x2 x3)) (- (+ x3 x4) (+ (* x3 x4) (- x1 x2))))))
* [exit]simplify:  Simplified to (* (* (* (- x2 x1) (+ x3 x4)) (- x2 (+ (- x1) (- x3 x4)))) (+ (* (- x1 x2) (* (- x2 x3) (- x1 x2))) (* (* (- (+ x3 x4) (* x3 x4)) (- x2 x3)) (- (+ x3 x4) (+ (* x3 x4) (- x1 x2))))))
* * * * [misc]progress:  [ 159 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (135 enodes)
* * [misc]simplify:  iters left: 4 (296 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (* (* x1 x4) (+ x3 x4)) (- x2 x1))) (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ x2 x1) (* (+ x3 x4) (- x2 x1))) (* (* (+ x3 x4) (- x2 x1)) (- x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x4 x3))) (- (* x3 x3) (* x2 (- x3 x2))))) (* (- (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x4 x3))) (- (* x3 x3) (* x2 (- x3 x2))))) (* (* (+ (cube x2) (cube x3)) x1) (- (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* (+ x3 x4) (- x2 x1)) (- (- x2 (- x1)) (- x3 x4)))))
* [exit]simplify:  Simplified to (+ (* (+ (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (* (* x1 x4) (+ x3 x4)) (- x2 x1))) (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (+ x2 x1) (* (+ x3 x4) (- x2 x1))) (* (* (+ x3 x4) (- x2 x1)) (- x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x4 x3))) (- (* x3 x3) (* x2 (- x3 x2))))) (* (- (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x4 x3))) (- (* x3 x3) (* x2 (- x3 x2))))) (* (* (+ (cube x2) (cube x3)) x1) (- (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* (+ x3 x4) (- x2 x1)) (- (- x2 (- x1)) (- x3 x4)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (60 enodes)
* * [misc]simplify:  iters left: 4 (119 enodes)
* * [misc]simplify:  iters left: 3 (291 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* x2 x2) (* (- x3 x2) x3)) (- (+ (- x2 x3) x4) (- x1))) (* (* (- x2 x1) (+ x3 x4)) (- (- x1 x2) (- (+ x3 x4) (* x3 x4)))))
* [exit]simplify:  Simplified to (* (* (+ (* x2 x2) (* (- x3 x2) x3)) (- (+ (- x2 x3) x4) (- x1))) (* (* (- x2 x1) (+ x3 x4)) (- (- x1 x2) (- (+ x3 x4) (* x3 x4)))))
* * * * [misc]progress:  [ 160 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (47 enodes)
* * [misc]simplify:  iters left: 5 (113 enodes)
* * [misc]simplify:  iters left: 4 (214 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (- (- x1 x2) (+ x3 x4)) (* x4 x3)) (- x2 x3)) (+ (* (* (+ x3 x4) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))))) (* (* (+ (- x2 x3) (- x4 (- x1))) x3) (* (- x2 x1) (- (* (+ x3 x4) (+ x2 x1)) (- (* x3 x3) (* x4 x4))))))) (* (* (* (+ x3 x4) (- x2 x1)) (+ (- x2 x3) (- x4 (- x1)))) (- (* (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3)))) (- x2 x3)) x2) (* (* (* x1 (+ x3 x2)) (- x2 x3)) (+ (- (- x1 x2) (+ x3 x4)) (* x4 x3))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (- (- x1 x2) (+ x3 x4)) (* x4 x3)) (- x2 x3)) (+ (* (* (+ x3 x4) (- x2 x1)) (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))))) (* (* (+ (- x2 x3) (- x4 (- x1))) x3) (* (- x2 x1) (- (* (+ x3 x4) (+ x2 x1)) (- (* x3 x3) (* x4 x4))))))) (* (* (* (+ x3 x4) (- x2 x1)) (+ (- x2 x3) (- x4 (- x1)))) (- (* (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3)))) (- x2 x3)) x2) (* (* (* x1 (+ x3 x2)) (- x2 x3)) (+ (- (- x1 x2) (+ x3 x4)) (* x4 x3))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (19 enodes)
* * [misc]simplify:  iters left: 5 (44 enodes)
* * [misc]simplify:  iters left: 4 (80 enodes)
* * [misc]simplify:  iters left: 3 (190 enodes)
* * [misc]simplify:  iters left: 2 (474 enodes)
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (* (- x2 x1) (+ x3 x4))) (- x2 (+ (- x1) (- x3 x4)))) (- (- x1 x2) (- (+ x3 x4) (* x3 x4))))
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (* (- x2 x1) (+ x3 x4))) (- x2 (+ (- x1) (- x3 x4)))) (- (- x1 x2) (- (+ x3 x4) (* x3 x4))))
* * * * [misc]progress:  [ 161 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3)))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3))))
* * [misc]simplify:  iters left: 6 (48 enodes)
* * [misc]simplify:  iters left: 5 (129 enodes)
* * [misc]simplify:  iters left: 4 (287 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ x3 x4) (- x2 x1)) (- x2 (+ (- x3 x4) (- x1)))) (- (cube (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (cube (* (+ x3 x2) x1)))) (* (+ (* (* (+ x3 x4) (- x2 x1)) (* (+ x2 (+ (- x3 x4) (- x1))) (* (- x2 (+ (- x3 x4) (- x1))) (* x1 x4)))) (* (* (- x2 (+ (- x3 x4) (- x1))) x3) (- (* (* (+ x2 x1) (+ x3 x4)) (- x2 x1)) (* (* (+ x3 x4) (- x2 x1)) (- x3 x4))))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (+ (* (* (* (+ x3 x2) x1) x2) (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (sqr (* (+ x3 x2) x1))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ x3 x4) (- x2 x1)) (- x2 (+ (- x3 x4) (- x1)))) (- (cube (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (cube (* (+ x3 x2) x1)))) (* (+ (* (* (+ x3 x4) (- x2 x1)) (* (+ x2 (+ (- x3 x4) (- x1))) (* (- x2 (+ (- x3 x4) (- x1))) (* x1 x4)))) (* (* (- x2 (+ (- x3 x4) (- x1))) x3) (- (* (* (+ x2 x1) (+ x3 x4)) (- x2 x1)) (* (* (+ x3 x4) (- x2 x1)) (- x3 x4))))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (+ (* (* (* (+ x3 x2) x1) x2) (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (sqr (* (+ x3 x2) x1))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (77 enodes)
* * [misc]simplify:  iters left: 4 (180 enodes)
* * [misc]simplify:  iters left: 3 (459 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (* (- x2 x1) (+ x3 x4)) (- (- x2 (- x1)) (- x3 x4))) (* (+ x2 x3) x1)) (+ (* (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) x2) (* (+ x2 x3) x1))) (* (* (* (- x2 x1) (+ x3 x4)) (- (- x2 (- x1)) (- x3 x4))) (sqr (* (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) x2))))
* [exit]simplify:  Simplified to (+ (* (* (* (* (- x2 x1) (+ x3 x4)) (- (- x2 (- x1)) (- x3 x4))) (* (+ x2 x3) x1)) (+ (* (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) x2) (* (+ x2 x3) x1))) (* (* (* (- x2 x1) (+ x3 x4)) (- (- x2 (- x1)) (- x3 x4))) (sqr (* (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) x2))))
* * * * [misc]progress:  [ 162 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (43 enodes)
* * [misc]simplify:  iters left: 5 (120 enodes)
* * [misc]simplify:  iters left: 4 (246 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* (+ x3 x4) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))) (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (* (+ x3 x4) (+ x2 x1)) (- x2 x1)) (* (* (+ x3 x4) (- x2 x1)) (- x3 x4))))) (+ (* x1 (+ x3 x2)) (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))))) (* (* (+ (* x1 (+ x3 x2)) (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* (+ x3 x4) (- x2 x1)) (- (- x2 (- x1)) (- x3 x4)))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (* x1 (+ x3 x2)))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* (+ x3 x4) (- x2 x1)) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4))) (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (* (* (+ x3 x4) (+ x2 x1)) (- x2 x1)) (* (* (+ x3 x4) (- x2 x1)) (- x3 x4))))) (+ (* x1 (+ x3 x2)) (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))))) (* (* (+ (* x1 (+ x3 x2)) (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* (+ x3 x4) (- x2 x1)) (- (- x2 (- x1)) (- x3 x4)))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (* x1 (+ x3 x2)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (21 enodes)
* * [misc]simplify:  iters left: 5 (61 enodes)
* * [misc]simplify:  iters left: 4 (125 enodes)
* * [misc]simplify:  iters left: 3 (269 enodes)
* [exit]simplify:  Simplified to (* (+ (* (+ x2 x3) x1) (* (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) x2)) (* (* (- x2 x1) (+ x3 x4)) (- (+ (- x2 x3) x4) (- x1))))
* [exit]simplify:  Simplified to (* (+ (* (+ x2 x3) x1) (* (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) x2)) (* (* (- x2 x1) (+ x3 x4)) (- (+ (- x2 x3) x4) (- x1))))
* * * * [misc]progress:  [ 163 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (64 enodes)
* * [misc]simplify:  iters left: 5 (177 enodes)
* * [misc]simplify:  iters left: 4 (496 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4))) (- (- x2 (- x1)) (- x3 x4))) (- (* (+ (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (- (cube x1) (cube x2)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4))))) (+ (cube x2) (* x3 (* (- x3 x2) x2)))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (cube x3) (cube x2)) x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))))) (* (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* x1 x1) (* x2 (+ x2 x1)))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)) (* x3 (* (- (cube (+ x2 x1)) (cube (- x3 x4))) (- (- x2 (- x1)) (- x3 x4)))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4))) (- (- x2 (- x1)) (- x3 x4))) (- (* (+ (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (- (cube x1) (cube x2)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4))))) (+ (cube x2) (* x3 (* (- x3 x2) x2)))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (cube x3) (cube x2)) x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))))) (* (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* x1 x1) (* x2 (+ x2 x1)))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)) (* x3 (* (- (cube (+ x2 x1)) (cube (- x3 x4))) (- (- x2 (- x1)) (- x3 x4)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (34 enodes)
* * [misc]simplify:  iters left: 5 (92 enodes)
* * [misc]simplify:  iters left: 4 (262 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* (+ (+ x1 x2) (- x3 x4)) (- x3 x4)) (sqr (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))) (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))))
* [exit]simplify:  Simplified to (* (* (+ (* (+ (+ x1 x2) (- x3 x4)) (- x3 x4)) (sqr (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))) (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))))
* * * * [misc]progress:  [ 164 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (61 enodes)
* * [misc]simplify:  iters left: 5 (158 enodes)
* * [misc]simplify:  iters left: 4 (408 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4))) (- (- x2 (- x1)) (- x3 x4))) (- (* (* (- x2 x3) x2) (+ (* (- (cube x1) (cube x2)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))) (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ (* x1 (+ x2 x1)) (* x2 x2))))) (* (* (* (+ x3 x2) (* (- x2 x3) x1)) (+ (* x1 (+ x2 x1)) (* x2 x2))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))))) (* (* (* (- x2 x3) (+ (* x1 (+ x2 x1)) (* x2 x2))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))) (+ (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4)))) (* (* (- (- x2 (- x1)) (- x3 x4)) x3) (- (cube (+ x2 x1)) (cube (- x3 x4)))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4))) (- (- x2 (- x1)) (- x3 x4))) (- (* (* (- x2 x3) x2) (+ (* (- (cube x1) (cube x2)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))) (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ (* x1 (+ x2 x1)) (* x2 x2))))) (* (* (* (+ x3 x2) (* (- x2 x3) x1)) (+ (* x1 (+ x2 x1)) (* x2 x2))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))))) (* (* (* (- x2 x3) (+ (* x1 (+ x2 x1)) (* x2 x2))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))) (+ (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4)))) (* (* (- (- x2 (- x1)) (- x3 x4)) x3) (- (cube (+ x2 x1)) (cube (- x3 x4)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (31 enodes)
* * [misc]simplify:  iters left: 5 (79 enodes)
* * [misc]simplify:  iters left: 4 (204 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* (- x3 x4) (+ (+ x1 x2) (- x3 x4))) (sqr (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))) (* (* (- x2 x3) (+ (* x1 (+ x1 x2)) (* x2 x2))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))))
* [exit]simplify:  Simplified to (* (* (+ (* (- x3 x4) (+ (+ x1 x2) (- x3 x4))) (sqr (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))) (* (* (- x2 x3) (+ (* x1 (+ x1 x2)) (* x2 x2))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))))
* * * * [misc]progress:  [ 165 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (60 enodes)
* * [misc]simplify:  iters left: 5 (170 enodes)
* * [misc]simplify:  iters left: 4 (496 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* (+ (* x2 x2) (* (- x3 x2) x3)) x2) (+ (* (+ (* x1 (+ x2 x1)) (* x2 x2)) (- (* (+ x3 x4) (+ x3 x4)) (sqr (* x4 x3)))) (* (+ (+ x3 x4) (* x4 x3)) (- (cube x1) (cube x2))))) (* (* (+ (* x1 (+ x2 x1)) (* x2 x2)) (* (+ (cube x3) (cube x2)) (+ (+ x3 x4) (* x4 x3)))) x1)) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- (- x2 (- x1)) (- x3 x4)))) (* (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)) (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* x2 x2) (* (- x3 x2) x3)) (* (+ (* x1 (+ x2 x1)) (* x2 x2)) (+ (+ x3 x4) (* x4 x3))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* (+ (* x2 x2) (* (- x3 x2) x3)) x2) (+ (* (+ (* x1 (+ x2 x1)) (* x2 x2)) (- (* (+ x3 x4) (+ x3 x4)) (sqr (* x4 x3)))) (* (+ (+ x3 x4) (* x4 x3)) (- (cube x1) (cube x2))))) (* (* (+ (* x1 (+ x2 x1)) (* x2 x2)) (* (+ (cube x3) (cube x2)) (+ (+ x3 x4) (* x4 x3)))) x1)) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- (- x2 (- x1)) (- x3 x4)))) (* (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)) (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (+ (* x2 x2) (* (- x3 x2) x3)) (* (+ (* x1 (+ x2 x1)) (* x2 x2)) (+ (+ x3 x4) (* x4 x3))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (81 enodes)
* * [misc]simplify:  iters left: 4 (234 enodes)
* [exit]simplify:  Simplified to (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (* (- (sqr x3) (* x2 (- x3 x2))) (+ (+ x3 x4) (* x3 x4)))) (* (+ (* (- x3 x4) (+ (- x3 x4) (+ x1 x2))) (sqr (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))))
* [exit]simplify:  Simplified to (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (* (- (sqr x3) (* x2 (- x3 x2))) (+ (+ x3 x4) (* x3 x4)))) (* (+ (* (- x3 x4) (+ (- x3 x4) (+ x1 x2))) (sqr (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))))
* * * * [misc]progress:  [ 166 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (57 enodes)
* * [misc]simplify:  iters left: 5 (151 enodes)
* * [misc]simplify:  iters left: 4 (397 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ (+ x3 x4) (* x4 x3))) (+ (* x1 (+ x2 x1)) (* x2 x2))) (+ (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4))))) (* x3 (* (- (cube (+ x2 x1)) (cube (- x3 x4))) (- (- x2 (- x1)) (- x3 x4)))))) (* (- (* (* x2 (- x2 x3)) (+ (* (- (cube x1) (cube x2)) (+ (+ x3 x4) (* x4 x3))) (* (* (- (+ x3 x4) (* x4 x3)) (+ (+ x3 x4) (* x4 x3))) (+ (* x1 (+ x2 x1)) (* x2 x2))))) (* (* (* (- x2 x3) (* x1 (+ x3 x2))) (+ (* x1 (+ x2 x1)) (* x2 x2))) (+ (+ x3 x4) (* x4 x3)))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- (- x2 (- x1)) (- x3 x4)))))
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ (+ x3 x4) (* x4 x3))) (+ (* x1 (+ x2 x1)) (* x2 x2))) (+ (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4))))) (* x3 (* (- (cube (+ x2 x1)) (cube (- x3 x4))) (- (- x2 (- x1)) (- x3 x4)))))) (* (- (* (* x2 (- x2 x3)) (+ (* (- (cube x1) (cube x2)) (+ (+ x3 x4) (* x4 x3))) (* (* (- (+ x3 x4) (* x4 x3)) (+ (+ x3 x4) (* x4 x3))) (+ (* x1 (+ x2 x1)) (* x2 x2))))) (* (* (* (- x2 x3) (* x1 (+ x3 x2))) (+ (* x1 (+ x2 x1)) (* x2 x2))) (+ (+ x3 x4) (* x4 x3)))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- (- x2 (- x1)) (- x3 x4)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (67 enodes)
* * [misc]simplify:  iters left: 4 (185 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 (+ x1 x2)) (* x2 x2)) (* (+ (+ x3 x4) (* x3 x4)) (- x2 x3))) (+ (* (+ (+ x1 x2) (- x3 x4)) (- x3 x4)) (sqr (+ x1 x2)))) (- x2 (+ (- x1) (- x3 x4))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 (+ x1 x2)) (* x2 x2)) (* (+ (+ x3 x4) (* x3 x4)) (- x2 x3))) (+ (* (+ (+ x1 x2) (- x3 x4)) (- x3 x4)) (sqr (+ x1 x2)))) (- x2 (+ (- x1) (- x3 x4))))
* * * * [misc]progress:  [ 167 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (61 enodes)
* * [misc]simplify:  iters left: 5 (170 enodes)
* * [misc]simplify:  iters left: 4 (472 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (+ (- x2 x3) (- x4 (- x1)))) (- (* (* (- (* x3 x3) (* x2 (- x3 x2))) x2) (+ (* (+ x2 x1) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (* (- x1 x2) (+ x2 x1))))) (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (* (* (+ x2 x1) x1) (+ (cube x2) (cube x3)))))) (* (* (* (+ x2 x1) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))))) (+ (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1))))) (* x3 (* (- (cube (+ x2 x1)) (cube (- x3 x4))) (+ (- x2 x3) (- x4 (- x1))))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (+ (- x2 x3) (- x4 (- x1)))) (- (* (* (- (* x3 x3) (* x2 (- x3 x2))) x2) (+ (* (+ x2 x1) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (* (- x1 x2) (+ x2 x1))))) (* (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (* (* (+ x2 x1) x1) (+ (cube x2) (cube x3)))))) (* (* (* (+ x2 x1) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))))) (+ (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1))))) (* x3 (* (- (cube (+ x2 x1)) (cube (- x3 x4))) (+ (- x2 x3) (- x4 (- x1))))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (31 enodes)
* * [misc]simplify:  iters left: 5 (83 enodes)
* * [misc]simplify:  iters left: 4 (260 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* (- x3 x4) (+ (+ x1 x2) (- x3 x4))) (* (+ x1 x2) (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))) (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ x1 x2)) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (sqr (+ x3 x4)))))
* [exit]simplify:  Simplified to (* (* (+ (* (- x3 x4) (+ (+ x1 x2) (- x3 x4))) (* (+ x1 x2) (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))) (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ x1 x2)) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (sqr (+ x3 x4)))))
* * * * [misc]progress:  [ 168 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (57 enodes)
* * [misc]simplify:  iters left: 5 (149 enodes)
* * [misc]simplify:  iters left: 4 (386 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ x2 x1) (- x2 x3)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))))) (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)) (* x3 (* (- (cube (+ x2 x1)) (cube (- x3 x4))) (+ (- x2 x3) (- x4 (- x1))))))) (* (- (* (+ (* (* (+ x2 x1) x2) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (* (* (+ x2 x1) x2) (- x1 x2)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))))) (- x2 x3)) (* (* (* (- x2 x3) (* x1 (+ x3 x2))) (+ x2 x1)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (+ (- x2 x3) (- x4 (- x1))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ x2 x1) (- x2 x3)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))))) (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)) (* x3 (* (- (cube (+ x2 x1)) (cube (- x3 x4))) (+ (- x2 x3) (- x4 (- x1))))))) (* (- (* (+ (* (* (+ x2 x1) x2) (- (cube (+ x3 x4)) (cube (* x4 x3)))) (* (* (* (+ x2 x1) x2) (- x1 x2)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))))) (- x2 x3)) (* (* (* (- x2 x3) (* x1 (+ x3 x2))) (+ x2 x1)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (+ (- x2 x3) (- x4 (- x1))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (68 enodes)
* * [misc]simplify:  iters left: 4 (194 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ x1 x2) (- x2 x3)) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (sqr (+ x3 x4)))) (* (+ (* (- x3 x4) (+ (- x3 x4) (+ x1 x2))) (* (+ x1 x2) (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (+ x1 x2) (- x2 x3)) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (sqr (+ x3 x4)))) (* (+ (* (- x3 x4) (+ (- x3 x4) (+ x1 x2))) (* (+ x1 x2) (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))))
* * * * [misc]progress:  [ 169 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (57 enodes)
* * [misc]simplify:  iters left: 5 (163 enodes)
* * [misc]simplify:  iters left: 4 (474 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4))) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)) (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (cube (+ x2 x1)) (cube (- x3 x4)))))) (* (- (* (* x2 (+ (* x3 (- x3 x2)) (* x2 x2))) (* (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4))) (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* (+ (cube x3) (cube x2)) x1) (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (+ (- x2 x3) (- x4 (- x1))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4))) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)) (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (cube (+ x2 x1)) (cube (- x3 x4)))))) (* (- (* (* x2 (+ (* x3 (- x3 x2)) (* x2 x2))) (* (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4))) (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* (+ (cube x3) (cube x2)) x1) (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (+ (- x2 x3) (- x4 (- x1))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (72 enodes)
* * [misc]simplify:  iters left: 4 (225 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (+ (* (- x3 x4) (+ (- x3 x4) (+ x1 x2))) (* (+ x1 x2) (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (+ (* (- x3 x4) (+ (- x3 x4) (+ x1 x2))) (* (+ x1 x2) (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))))
* * * * [misc]progress:  [ 170 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (53 enodes)
* * [misc]simplify:  iters left: 5 (142 enodes)
* * [misc]simplify:  iters left: 4 (369 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- x2 (+ (- x3 x4) (- x1)))) (- (* (* x2 (- x2 x3)) (* (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4))) (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* x1 (* (+ x3 x2) (- x2 x3))) (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4)))))) (* (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)) (* x3 (* (- (cube (+ x2 x1)) (cube (- x3 x4))) (- x2 (+ (- x3 x4) (- x1)))))) (* (* (+ x2 x1) (- x2 x3)) (+ (* x4 x3) (+ x3 x4)))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- x2 (+ (- x3 x4) (- x1)))) (- (* (* x2 (- x2 x3)) (* (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4))) (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (* (* x1 (* (+ x3 x2) (- x2 x3))) (* (+ x2 x1) (+ (* x4 x3) (+ x3 x4)))))) (* (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)) (* x3 (* (- (cube (+ x2 x1)) (cube (- x3 x4))) (- x2 (+ (- x3 x4) (- x1)))))) (* (* (+ x2 x1) (- x2 x3)) (+ (* x4 x3) (+ x3 x4)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (56 enodes)
* * [misc]simplify:  iters left: 4 (163 enodes)
* * [misc]simplify:  iters left: 3 (429 enodes)
* [exit]simplify:  Simplified to (* (* (* (* (+ x1 x2) (- x2 x3)) (+ (+ x3 x4) (* x3 x4))) (- (- x2 (- x3 x4)) (- x1))) (+ (* (- x3 x4) (+ (+ x1 x2) (- x3 x4))) (* (+ x1 x2) (+ x1 x2))))
* [exit]simplify:  Simplified to (* (* (* (* (+ x1 x2) (- x2 x3)) (+ (+ x3 x4) (* x3 x4))) (- (- x2 (- x3 x4)) (- x1))) (+ (* (- x3 x4) (+ (+ x1 x2) (- x3 x4))) (* (+ x1 x2) (+ x1 x2))))
* * * * [misc]progress:  [ 171 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (146 enodes)
* * [misc]simplify:  iters left: 4 (362 enodes)
* [exit]simplify:  Simplified to (+ (* (* (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (* (* x1 x4) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))))) (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (cube (+ x2 x1)) (cube (- x3 x4)))))) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (+ (- x2 x3) (- x4 (- x1)))) (- (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) x2) (+ (cube (- (+ x3 x4) (* x4 x3))) (cube (- x1 x2)))) (* (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (* x1 (+ (cube x3) (cube x2)))))))
* [exit]simplify:  Simplified to (+ (* (* (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (* (* x1 x4) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))))) (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (cube (+ x2 x1)) (cube (- x3 x4)))))) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (+ (- x2 x3) (- x4 (- x1)))) (- (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) x2) (+ (cube (- (+ x3 x4) (* x4 x3))) (cube (- x1 x2)))) (* (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (* x1 (+ (cube x3) (cube x2)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (31 enodes)
* * [misc]simplify:  iters left: 5 (75 enodes)
* * [misc]simplify:  iters left: 4 (184 enodes)
* * [misc]simplify:  iters left: 3 (401 enodes)
* [exit]simplify:  Simplified to (* (- (+ (* (- x1 x2) (- x1 x2)) (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4)))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ (* (+ (- x3 x4) (+ x1 x2)) (- x3 x4)) (sqr (+ x1 x2))) (* (+ (- (- x2 x3) (- x1)) x4) (+ (* (- x3 x2) x3) (* x2 x2)))))
* [exit]simplify:  Simplified to (* (- (+ (* (- x1 x2) (- x1 x2)) (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4)))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ (* (+ (- x3 x4) (+ x1 x2)) (- x3 x4)) (sqr (+ x1 x2))) (* (+ (- (- x2 x3) (- x1)) x4) (+ (* (- x3 x2) x3) (* x2 x2)))))
* * * * [misc]progress:  [ 172 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (125 enodes)
* * [misc]simplify:  iters left: 4 (270 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (- x3 x4) (+ x2 x1)) (- x3 x4))) (- (- x2 (- x1)) (- x3 x4))) (- (* (* x2 (- x2 x3)) (+ (cube (- x1 x2)) (cube (- (+ x3 x4) (* x4 x3))))) (* (* (- (* x2 x2) (* x3 x3)) x1) (- (+ (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- x1 x2))) (* (- x1 x2) (- (+ x3 x4) (* x4 x3))))))) (* (+ (* (- x2 x3) (* (- x1 x2) (- x1 x2))) (* (* (- x2 x3) (- (+ x3 x4) (* x4 x3))) (+ (- x4 (* x4 x3)) (- x3 (- x1 x2))))) (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (- x3 x4) (+ x2 x1)) (- x3 x4))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)) (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (cube (+ x2 x1)) (cube (- x3 x4)))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (- x3 x4) (+ x2 x1)) (- x3 x4))) (- (- x2 (- x1)) (- x3 x4))) (- (* (* x2 (- x2 x3)) (+ (cube (- x1 x2)) (cube (- (+ x3 x4) (* x4 x3))))) (* (* (- (* x2 x2) (* x3 x3)) x1) (- (+ (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- x1 x2))) (* (- x1 x2) (- (+ x3 x4) (* x4 x3))))))) (* (+ (* (- x2 x3) (* (- x1 x2) (- x1 x2))) (* (* (- x2 x3) (- (+ x3 x4) (* x4 x3))) (+ (- x4 (* x4 x3)) (- x3 (- x1 x2))))) (+ (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (- x3 x4) (+ x2 x1)) (- x3 x4))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)) (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (cube (+ x2 x1)) (cube (- x3 x4)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (59 enodes)
* * [misc]simplify:  iters left: 4 (143 enodes)
* * [misc]simplify:  iters left: 3 (365 enodes)
* [exit]simplify:  Simplified to (* (+ (* (- x1 x2) (- x1 x2)) (- (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (* (+ (- x3 x4) (+ x1 x2)) (- x3 x4)) (sqr (+ x1 x2))) (* (- x2 x3) (- x2 (+ (- x1) (- x3 x4))))))
* [exit]simplify:  Simplified to (* (+ (* (- x1 x2) (- x1 x2)) (- (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (* (+ (- x3 x4) (+ x1 x2)) (- x3 x4)) (sqr (+ x1 x2))) (* (- x2 x3) (- x2 (+ (- x1) (- x3 x4))))))
* * * * [misc]progress:  [ 173 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (135 enodes)
* * [misc]simplify:  iters left: 4 (334 enodes)
* [exit]simplify:  Simplified to (+ (* (* (- (- x1 (+ x3 x2)) (- x4 (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1))))) (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (cube (+ x2 x1)) (cube (- x3 x4)))))) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (- (- x2 (- x1)) (- x3 x4))) (- (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) x2) (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3))))) (* (* (+ (cube x2) (cube x3)) x1) (- (- x1 (+ x3 x2)) (- x4 (* x4 x3)))))))
* [exit]simplify:  Simplified to (+ (* (* (- (- x1 (+ x3 x2)) (- x4 (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1))))) (* (* x3 (- (- x2 (- x1)) (- x3 x4))) (- (cube (+ x2 x1)) (cube (- x3 x4)))))) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1)))) (- (- x2 (- x1)) (- x3 x4))) (- (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) x2) (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3))))) (* (* (+ (cube x2) (cube x3)) x1) (- (- x1 (+ x3 x2)) (- x4 (* x4 x3)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (69 enodes)
* * [misc]simplify:  iters left: 4 (170 enodes)
* * [misc]simplify:  iters left: 3 (417 enodes)
* [exit]simplify:  Simplified to (* (* (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- (sqr x3) (* x2 (- x3 x2)))) (- x2 (+ (- x1) (- x3 x4)))) (+ (* (+ (- x3 x4) (+ x1 x2)) (- x3 x4)) (sqr (+ x1 x2))))
* [exit]simplify:  Simplified to (* (* (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- (sqr x3) (* x2 (- x3 x2)))) (- x2 (+ (- x1) (- x3 x4)))) (+ (* (+ (- x3 x4) (+ x1 x2)) (- x3 x4)) (sqr (+ x1 x2))))
* * * * [misc]progress:  [ 174 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (48 enodes)
* * [misc]simplify:  iters left: 5 (114 enodes)
* * [misc]simplify:  iters left: 4 (259 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3)))) (- x2 x3)) x2) (* (* (- x2 x3) (* (+ x3 x2) x1)) (- (- x1 (+ x2 x4)) (- x3 (* x4 x3))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- x2 (+ (- x3 x4) (- x1))))) (* (+ (* (* x1 x4) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))))) (* x3 (* (- (cube (+ x2 x1)) (cube (- x3 x4))) (- x2 (+ (- x3 x4) (- x1)))))) (* (- (- x1 (+ x2 x4)) (- x3 (* x4 x3))) (- x2 x3))))
* [exit]simplify:  Simplified to (+ (* (- (* (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3)))) (- x2 x3)) x2) (* (* (- x2 x3) (* (+ x3 x2) x1)) (- (- x1 (+ x2 x4)) (- x3 (* x4 x3))))) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- x2 (+ (- x3 x4) (- x1))))) (* (+ (* (* x1 x4) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))))) (* x3 (* (- (cube (+ x2 x1)) (cube (- x3 x4))) (- x2 (+ (- x3 x4) (- x1)))))) (* (- (- x1 (+ x2 x4)) (- x3 (* x4 x3))) (- x2 x3))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (53 enodes)
* * [misc]simplify:  iters left: 4 (121 enodes)
* * [misc]simplify:  iters left: 3 (333 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* (+ (- x3 x4) (+ x1 x2)) (- x3 x4)) (sqr (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))
* [exit]simplify:  Simplified to (* (* (+ (* (+ (- x3 x4) (+ x1 x2)) (- x3 x4)) (sqr (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * * * [misc]progress:  [ 175 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3)))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3))))
* * [misc]simplify:  iters left: 6 (47 enodes)
* * [misc]simplify:  iters left: 5 (128 enodes)
* * [misc]simplify:  iters left: 4 (321 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* x1 x4) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (* (- x2 (+ (- x3 x4) (- x1))) (+ x2 (+ (- x3 x4) (- x1)))))) (* (* x3 (- x2 (+ (- x3 x4) (- x1)))) (- (cube (+ x2 x1)) (cube (- x3 x4))))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (+ (* (* (* (+ x3 x2) x1) x2) (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (sqr (* (+ x3 x2) x1))))) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- x2 (+ (- x3 x4) (- x1)))) (- (cube (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (cube (* (+ x3 x2) x1)))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* x1 x4) (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (* (- x2 (+ (- x3 x4) (- x1))) (+ x2 (+ (- x3 x4) (- x1)))))) (* (* x3 (- x2 (+ (- x3 x4) (- x1)))) (- (cube (+ x2 x1)) (cube (- x3 x4))))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (+ (* (* (* (+ x3 x2) x1) x2) (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (sqr (* (+ x3 x2) x1))))) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (+ x2 x1) (- x3 x4)))) (- x2 (+ (- x3 x4) (- x1)))) (- (cube (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (cube (* (+ x3 x2) x1)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (87 enodes)
* * [misc]simplify:  iters left: 4 (239 enodes)
* [exit]simplify:  Simplified to (* (+ (* (* x2 (- (+ (+ x3 x4) (- x1 x2)) (* x3 x4))) (* x2 (- (+ (+ x3 x4) (- x1 x2)) (* x3 x4)))) (+ (* (* (* (+ x2 x3) x1) x2) (- (+ (+ x3 x4) (- x1 x2)) (* x3 x4))) (sqr (* (+ x2 x3) x1)))) (* (+ (* (- x3 x4) (+ (+ x1 x2) (- x3 x4))) (sqr (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))))
* [exit]simplify:  Simplified to (* (+ (* (* x2 (- (+ (+ x3 x4) (- x1 x2)) (* x3 x4))) (* x2 (- (+ (+ x3 x4) (- x1 x2)) (* x3 x4)))) (+ (* (* (* (+ x2 x3) x1) x2) (- (+ (+ x3 x4) (- x1 x2)) (* x3 x4))) (sqr (* (+ x2 x3) x1)))) (* (+ (* (- x3 x4) (+ (+ x1 x2) (- x3 x4))) (sqr (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))))
* * * * [misc]progress:  [ 176 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (43 enodes)
* * [misc]simplify:  iters left: 5 (120 enodes)
* * [misc]simplify:  iters left: 4 (296 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* x1 (+ x3 x2)) (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (+ (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4)))) (* (* x3 (- x2 (+ (- x3 x4) (- x1)))) (- (cube (+ x2 x1)) (cube (- x3 x4)))))) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4))) (- x2 (+ (- x3 x4) (- x1)))) (* (+ (* x1 (+ x3 x2)) (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (* x1 (+ x3 x2))))))
* [exit]simplify:  Simplified to (+ (* (+ (* x1 (+ x3 x2)) (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (+ (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4)))) (* (* x3 (- x2 (+ (- x3 x4) (- x1)))) (- (cube (+ x2 x1)) (cube (- x3 x4)))))) (* (* (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4))) (- x2 (+ (- x3 x4) (- x1)))) (* (+ (* x1 (+ x3 x2)) (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3))))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x4 x3)))) (* x1 (+ x3 x2))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (71 enodes)
* * [misc]simplify:  iters left: 4 (180 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* (+ (- x3 x4) (+ x1 x2)) (- x3 x4)) (sqr (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))) (+ (* (+ x2 x3) x1) (* x2 (- (+ (+ x3 x4) (- x1 x2)) (* x3 x4)))))
* [exit]simplify:  Simplified to (* (* (+ (* (+ (- x3 x4) (+ x1 x2)) (- x3 x4)) (sqr (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4)))) (+ (* (+ x2 x3) x1) (* x2 (- (+ (+ x3 x4) (- x1 x2)) (* x3 x4)))))
* * * * [misc]progress:  [ 177 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (60 enodes)
* * [misc]simplify:  iters left: 5 (173 enodes)
* * [misc]simplify:  iters left: 4 (484 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- x2 (+ (- x3 x4) (- x1))) (* x3 (+ (+ x2 x1) (- x3 x4)))) (- (+ x2 x1) (- x3 x4))) (* x1 (* (* (+ (+ x2 x1) (- x3 x4)) (+ x2 (+ (- x3 x4) (- x1)))) (* (- x2 (+ (- x3 x4) (- x1))) x4)))) (* (* (+ (* x1 (+ x2 x1)) (* x2 x2)) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4))))) (* (* (- x2 (+ (- x3 x4) (- x1))) (+ (+ x2 x1) (- x3 x4))) (- (* (+ (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ (* x1 (+ x2 x1)) (* x2 x2))) (* (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4))) (- (cube x1) (cube x2)))) (+ (* x3 (* (- x3 x2) x2)) (cube x2))) (* (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4))) (* (+ (* x1 (+ x2 x1)) (* x2 x2)) (* (+ (cube x3) (cube x2)) x1))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- x2 (+ (- x3 x4) (- x1))) (* x3 (+ (+ x2 x1) (- x3 x4)))) (- (+ x2 x1) (- x3 x4))) (* x1 (* (* (+ (+ x2 x1) (- x3 x4)) (+ x2 (+ (- x3 x4) (- x1)))) (* (- x2 (+ (- x3 x4) (- x1))) x4)))) (* (* (+ (* x1 (+ x2 x1)) (* x2 x2)) (- (* x3 x3) (* x2 (- x3 x2)))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4))))) (* (* (- x2 (+ (- x3 x4) (- x1))) (+ (+ x2 x1) (- x3 x4))) (- (* (+ (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ (* x1 (+ x2 x1)) (* x2 x2))) (* (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4))) (- (cube x1) (cube x2)))) (+ (* x3 (* (- x3 x2) x2)) (cube x2))) (* (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4))) (* (+ (* x1 (+ x2 x1)) (* x2 x2)) (* (+ (cube x3) (cube x2)) x1))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (86 enodes)
* * [misc]simplify:  iters left: 4 (250 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (+ (* (- x3 x2) x3) (* x2 x2))) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (sqr (+ x3 x4)))) (* (+ (+ x1 x2) (- x3 x4)) (- x2 (+ (- x1) (- x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (+ (* (- x3 x2) x3) (* x2 x2))) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (sqr (+ x3 x4)))) (* (+ (+ x1 x2) (- x3 x4)) (- x2 (+ (- x1) (- x3 x4)))))
* * * * [misc]progress:  [ 178 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (57 enodes)
* * [misc]simplify:  iters left: 5 (154 enodes)
* * [misc]simplify:  iters left: 4 (398 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ (* x1 x1) (* x2 (+ x2 x1)))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))) (+ (* (+ (- x2 x3) (- x4 (- x1))) (* (* x3 (+ (+ x2 x1) (- x3 x4))) (- (+ x2 x1) (- x3 x4)))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))) (* (* (+ (- x2 x3) (- x4 (- x1))) (+ (+ x2 x1) (- x3 x4))) (- (* (* (- x2 x3) x2) (+ (* (- (cube x1) (cube x2)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))) (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (cube (+ x3 x4)) (cube (* x4 x3)))))) (* (* (* (- x2 x3) (* x1 (+ x3 x2))) (+ (* x1 x1) (* x2 (+ x2 x1)))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))))))
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ (* x1 x1) (* x2 (+ x2 x1)))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))) (+ (* (+ (- x2 x3) (- x4 (- x1))) (* (* x3 (+ (+ x2 x1) (- x3 x4))) (- (+ x2 x1) (- x3 x4)))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))) (* (* (+ (- x2 x3) (- x4 (- x1))) (+ (+ x2 x1) (- x3 x4))) (- (* (* (- x2 x3) x2) (+ (* (- (cube x1) (cube x2)) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))) (* (+ (* x1 x1) (* x2 (+ x2 x1))) (- (cube (+ x3 x4)) (cube (* x4 x3)))))) (* (* (* (- x2 x3) (* x1 (+ x3 x2))) (+ (* x1 x1) (* x2 (+ x2 x1)))) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (* (+ x3 x4) (+ x3 x4)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (73 enodes)
* * [misc]simplify:  iters left: 4 (180 enodes)
* [exit]simplify:  Simplified to (* (* (+ (+ x1 x2) (- x3 x4)) (- (- x2 (- x1)) (- x3 x4))) (* (* (- x2 x3) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (sqr (+ x3 x4)))))
* [exit]simplify:  Simplified to (* (* (+ (+ x1 x2) (- x3 x4)) (- (- x2 (- x1)) (- x3 x4))) (* (* (- x2 x3) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (sqr (+ x3 x4)))))
* * * * [misc]progress:  [ 179 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (166 enodes)
* * [misc]simplify:  iters left: 4 (456 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* (- (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (* x4 x3))) (+ (* x1 x1) (* x2 (+ x2 x1)))) (* (- (cube x1) (cube x2)) (+ (* x4 x3) (+ x3 x4)))) (+ (cube x2) (* (* (- x3 x2) x3) x2))) (* (* x1 (+ (* x1 x1) (* x2 (+ x2 x1)))) (* (+ (cube x2) (cube x3)) (+ (* x4 x3) (+ x3 x4))))) (* (+ (- x2 x3) (- x4 (- x1))) (+ (+ x2 x1) (- x3 x4)))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (* x4 x3) (+ x3 x4)) (+ (* x2 x2) (* (- x3 x2) x3)))) (+ (* x3 (* (+ (- x2 x3) (- x4 (- x1))) (* (+ (+ x2 x1) (- x3 x4)) (- (+ x2 x1) (- x3 x4))))) (* (* (+ (+ x2 x1) (- x3 x4)) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)))))
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* (- (* (+ x3 x4) (+ x3 x4)) (* (* x4 x3) (* x4 x3))) (+ (* x1 x1) (* x2 (+ x2 x1)))) (* (- (cube x1) (cube x2)) (+ (* x4 x3) (+ x3 x4)))) (+ (cube x2) (* (* (- x3 x2) x3) x2))) (* (* x1 (+ (* x1 x1) (* x2 (+ x2 x1)))) (* (+ (cube x2) (cube x3)) (+ (* x4 x3) (+ x3 x4))))) (* (+ (- x2 x3) (- x4 (- x1))) (+ (+ x2 x1) (- x3 x4)))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (* x4 x3) (+ x3 x4)) (+ (* x2 x2) (* (- x3 x2) x3)))) (+ (* x3 (* (+ (- x2 x3) (- x4 (- x1))) (* (+ (+ x2 x1) (- x3 x4)) (- (+ x2 x1) (- x3 x4))))) (* (* (+ (+ x2 x1) (- x3 x4)) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x1 x4)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (75 enodes)
* * [misc]simplify:  iters left: 4 (215 enodes)
* [exit]simplify:  Simplified to (* (* (+ (+ x1 x2) (- x3 x4)) (- (- x2 (- x1)) (- x3 x4))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (+ x3 x4) (* x3 x4))))
* [exit]simplify:  Simplified to (* (* (+ (+ x1 x2) (- x3 x4)) (- (- x2 (- x1)) (- x3 x4))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (+ x3 x4) (* x3 x4))))
* * * * [misc]progress:  [ 180 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (53 enodes)
* * [misc]simplify:  iters left: 5 (147 enodes)
* * [misc]simplify:  iters left: 4 (373 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* (- x2 x3) x2) (+ (* (- (cube x1) (cube x2)) (+ (* x4 x3) (+ x3 x4))) (* (+ (* x1 (+ x2 x1)) (* x2 x2)) (* (- (+ x3 x4) (* x4 x3)) (+ (* x4 x3) (+ x3 x4)))))) (* (* (- x2 x3) (* (+ x3 x2) x1)) (* (+ (* x1 (+ x2 x1)) (* x2 x2)) (+ (* x4 x3) (+ x3 x4))))) (* (- x2 (+ (- x3 x4) (- x1))) (+ (+ x2 x1) (- x3 x4)))) (* (+ (* (* x3 (- x2 (+ (- x3 x4) (- x1)))) (* (- (+ x2 x1) (- x3 x4)) (+ (+ x2 x1) (- x3 x4)))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (+ (+ x2 x1) (- x3 x4)))) (* (* (+ (* x4 x3) (+ x3 x4)) (- x2 x3)) (+ (* x1 (+ x2 x1)) (* x2 x2)))))
* [exit]simplify:  Simplified to (+ (* (- (* (* (- x2 x3) x2) (+ (* (- (cube x1) (cube x2)) (+ (* x4 x3) (+ x3 x4))) (* (+ (* x1 (+ x2 x1)) (* x2 x2)) (* (- (+ x3 x4) (* x4 x3)) (+ (* x4 x3) (+ x3 x4)))))) (* (* (- x2 x3) (* (+ x3 x2) x1)) (* (+ (* x1 (+ x2 x1)) (* x2 x2)) (+ (* x4 x3) (+ x3 x4))))) (* (- x2 (+ (- x3 x4) (- x1))) (+ (+ x2 x1) (- x3 x4)))) (* (+ (* (* x3 (- x2 (+ (- x3 x4) (- x1)))) (* (- (+ x2 x1) (- x3 x4)) (+ (+ x2 x1) (- x3 x4)))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (+ (+ x2 x1) (- x3 x4)))) (* (* (+ (* x4 x3) (+ x3 x4)) (- x2 x3)) (+ (* x1 (+ x2 x1)) (* x2 x2)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (61 enodes)
* * [misc]simplify:  iters left: 4 (161 enodes)
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x1) (* x2 (+ x1 x2)))) (* (+ (+ x1 x2) (- x3 x4)) (- x2 (+ (- x1) (- x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x1) (* x2 (+ x1 x2)))) (* (+ (+ x1 x2) (- x3 x4)) (- x2 (+ (- x1) (- x3 x4)))))
* * * * [misc]progress:  [ 181 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (57 enodes)
* * [misc]simplify:  iters left: 5 (166 enodes)
* * [misc]simplify:  iters left: 4 (446 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ x2 x1) (+ (* (- x3 x2) x3) (* x2 x2))) (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))))) (+ (* (+ (- x2 x3) (- x4 (- x1))) (* (* x3 (+ (+ x2 x1) (- x3 x4))) (- (+ x2 x1) (- x3 x4)))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))) (* (* (+ (- x2 x3) (- x4 (- x1))) (+ (+ x2 x1) (- x3 x4))) (- (* (* (+ (* (- x3 x2) x3) (* x2 x2)) x2) (+ (* (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (- (* x1 x1) (* x2 x2))) (* (+ x2 x1) (- (cube (+ x3 x4)) (cube (* x4 x3)))))) (* (+ (* (+ x2 x1) (sqr (+ x3 x4))) (* (* (+ x2 x1) (* x4 x3)) (+ (+ x3 x4) (* x4 x3)))) (* (+ (cube x3) (cube x2)) x1)))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ x2 x1) (+ (* (- x3 x2) x3) (* x2 x2))) (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))))) (+ (* (+ (- x2 x3) (- x4 (- x1))) (* (* x3 (+ (+ x2 x1) (- x3 x4))) (- (+ x2 x1) (- x3 x4)))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))) (* (* (+ (- x2 x3) (- x4 (- x1))) (+ (+ x2 x1) (- x3 x4))) (- (* (* (+ (* (- x3 x2) x3) (* x2 x2)) x2) (+ (* (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (- (* x1 x1) (* x2 x2))) (* (+ x2 x1) (- (cube (+ x3 x4)) (cube (* x4 x3)))))) (* (+ (* (+ x2 x1) (sqr (+ x3 x4))) (* (* (+ x2 x1) (* x4 x3)) (+ (+ x3 x4) (* x4 x3)))) (* (+ (cube x3) (cube x2)) x1)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (77 enodes)
* * [misc]simplify:  iters left: 4 (225 enodes)
* [exit]simplify:  Simplified to (* (* (+ (+ x1 x2) (- x3 x4)) (+ (- x2 x3) (- x4 (- x1)))) (* (* (+ x1 x2) (+ (* x2 x2) (* (- x3 x2) x3))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))))))
* [exit]simplify:  Simplified to (* (* (+ (+ x1 x2) (- x3 x4)) (+ (- x2 x3) (- x4 (- x1)))) (* (* (+ x1 x2) (+ (* x2 x2) (* (- x3 x2) x3))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))))))
* * * * [misc]progress:  [ 182 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (53 enodes)
* * [misc]simplify:  iters left: 5 (145 enodes)
* * [misc]simplify:  iters left: 4 (379 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x3 x4) (* (+ x2 x1) (+ x3 x4))) (* (* (+ x2 x1) (* x4 x3)) (+ (+ x3 x4) (* x4 x3)))) (- x2 x3)) (+ (* (* (- (- x2 (- x1)) (- x3 x4)) (* x3 (+ (+ x2 x1) (- x3 x4)))) (- (+ x2 x1) (- x3 x4))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (+ (+ x2 x1) (- x3 x4))))) (* (* (- (- x2 (- x1)) (- x3 x4)) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (- x2 x3)) (+ (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ x2 x1)) (* (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (- (* x1 x1) (* x2 x2))))) (* (+ (* (+ x3 x4) (* (+ x2 x1) (+ x3 x4))) (* (* (+ x2 x1) (* x4 x3)) (+ (+ x3 x4) (* x4 x3)))) (* x1 (* (+ x3 x2) (- x2 x3)))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (+ x3 x4) (* (+ x2 x1) (+ x3 x4))) (* (* (+ x2 x1) (* x4 x3)) (+ (+ x3 x4) (* x4 x3)))) (- x2 x3)) (+ (* (* (- (- x2 (- x1)) (- x3 x4)) (* x3 (+ (+ x2 x1) (- x3 x4)))) (- (+ x2 x1) (- x3 x4))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (+ (+ x2 x1) (- x3 x4))))) (* (* (- (- x2 (- x1)) (- x3 x4)) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (- x2 x3)) (+ (* (- (cube (+ x3 x4)) (cube (* x4 x3))) (+ x2 x1)) (* (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (* x4 x3) (+ x3 x4)))) (- (* x1 x1) (* x2 x2))))) (* (+ (* (+ x3 x4) (* (+ x2 x1) (+ x3 x4))) (* (* (+ x2 x1) (* x4 x3)) (+ (+ x3 x4) (* x4 x3)))) (* x1 (* (+ x3 x2) (- x2 x3)))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (62 enodes)
* * [misc]simplify:  iters left: 4 (159 enodes)
* * [misc]simplify:  iters left: 3 (365 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ x1 x2) (- x2 x3)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))) (* (+ (+ x1 x2) (- x3 x4)) (- (+ (- x2 x3) x4) (- x1))))
* [exit]simplify:  Simplified to (* (* (* (+ x1 x2) (- x2 x3)) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))) (* (+ (+ x1 x2) (- x3 x4)) (- (+ (- x2 x3) x4) (- x1))))
* * * * [misc]progress:  [ 183 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (53 enodes)
* * [misc]simplify:  iters left: 5 (159 enodes)
* * [misc]simplify:  iters left: 4 (471 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (* (* (+ (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (+ x2 x1)) (* (+ (+ x3 x4) (* x4 x3)) (* (+ x2 x1) (- x1 x2))))) (* (+ (+ x3 x4) (* x4 x3)) (* (* x1 (+ x2 x1)) (+ (cube x2) (cube x3))))) (* (- (- x2 (- x1)) (- x3 x4)) (+ (+ x2 x1) (- x3 x4)))) (* (+ (* (* (- (- x2 (- x1)) (- x3 x4)) x3) (* (- (+ x2 x1) (- x3 x4)) (+ (+ x2 x1) (- x3 x4)))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4)))) (* (* (+ x2 x1) (+ (+ x3 x4) (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2)))))
* [exit]simplify:  Simplified to (+ (* (- (* (* x2 (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (* (* (+ (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (+ x2 x1)) (* (+ (+ x3 x4) (* x4 x3)) (* (+ x2 x1) (- x1 x2))))) (* (+ (+ x3 x4) (* x4 x3)) (* (* x1 (+ x2 x1)) (+ (cube x2) (cube x3))))) (* (- (- x2 (- x1)) (- x3 x4)) (+ (+ x2 x1) (- x3 x4)))) (* (+ (* (* (- (- x2 (- x1)) (- x3 x4)) x3) (* (- (+ x2 x1) (- x3 x4)) (+ (+ x2 x1) (- x3 x4)))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4)))) (* (* (+ x2 x1) (+ (+ x3 x4) (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (66 enodes)
* * [misc]simplify:  iters left: 4 (214 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x4) (+ x3 x4)) (+ x1 x2)) (- (sqr x3) (* x2 (- x3 x2)))) (* (+ (+ x1 x2) (- x3 x4)) (- x2 (+ (- x1) (- x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x4) (+ x3 x4)) (+ x1 x2)) (- (sqr x3) (* x2 (- x3 x2)))) (* (+ (+ x1 x2) (- x3 x4)) (- x2 (+ (- x1) (- x3 x4)))))
* * * * [misc]progress:  [ 184 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (48 enodes)
* * [misc]simplify:  iters left: 5 (137 enodes)
* * [misc]simplify:  iters left: 4 (375 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* (- x2 x3) x2) (+ (* (- (* x1 x1) (* x2 x2)) (+ (+ x3 x4) (* x4 x3))) (* (+ x2 x1) (- (sqr (+ x3 x4)) (* (* x4 x3) (* x4 x3)))))) (* (* (* x1 (+ x3 x2)) (- x2 x3)) (* (+ x2 x1) (+ (+ x3 x4) (* x4 x3))))) (* (+ (- x2 x3) (- x4 (- x1))) (+ (+ x2 x1) (- x3 x4)))) (* (* (* (+ x2 x1) (+ (+ x3 x4) (* x4 x3))) (- x2 x3)) (+ (* (+ (- x2 x3) (- x4 (- x1))) (* (+ (+ x2 x1) (- x3 x4)) (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* (- x2 x3) x2) (+ (* (- (* x1 x1) (* x2 x2)) (+ (+ x3 x4) (* x4 x3))) (* (+ x2 x1) (- (sqr (+ x3 x4)) (* (* x4 x3) (* x4 x3)))))) (* (* (* x1 (+ x3 x2)) (- x2 x3)) (* (+ x2 x1) (+ (+ x3 x4) (* x4 x3))))) (* (+ (- x2 x3) (- x4 (- x1))) (+ (+ x2 x1) (- x3 x4)))) (* (* (* (+ x2 x1) (+ (+ x3 x4) (* x4 x3))) (- x2 x3)) (+ (* (+ (- x2 x3) (- x4 (- x1))) (* (+ (+ x2 x1) (- x3 x4)) (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (19 enodes)
* * [misc]simplify:  iters left: 5 (50 enodes)
* * [misc]simplify:  iters left: 4 (140 enodes)
* * [misc]simplify:  iters left: 3 (353 enodes)
* [exit]simplify:  Simplified to (* (* (- x2 x3) (+ (+ x1 x2) (- x3 x4))) (* (+ (- x2 x3) (- x4 (- x1))) (* (+ (* x3 x4) (+ x3 x4)) (+ x1 x2))))
* [exit]simplify:  Simplified to (* (* (- x2 x3) (+ (+ x1 x2) (- x3 x4))) (* (+ (- x2 x3) (- x4 (- x1))) (* (+ (* x3 x4) (+ x3 x4)) (+ x1 x2))))
* * * * [misc]progress:  [ 185 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (142 enodes)
* * [misc]simplify:  iters left: 4 (352 enodes)
* [exit]simplify:  Simplified to (+ (* (* (- (* x3 x3) (* x2 (- x3 x2))) (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2))))) (+ (* (* (- x2 (+ (- x3 x4) (- x1))) (- (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (- x3 x4)))) x3) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))) (* (- (* (* x2 (- (* x3 x3) (* x2 (- x3 x2)))) (+ (cube (- x1 x2)) (cube (- (+ x3 x4) (* x4 x3))))) (* (* (+ (cube x2) (cube x3)) x1) (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))))) (* (- x2 (+ (- x3 x4) (- x1))) (+ (+ x2 x1) (- x3 x4)))))
* [exit]simplify:  Simplified to (+ (* (* (- (* x3 x3) (* x2 (- x3 x2))) (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2))))) (+ (* (* (- x2 (+ (- x3 x4) (- x1))) (- (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (- x3 x4)))) x3) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))) (* (- (* (* x2 (- (* x3 x3) (* x2 (- x3 x2)))) (+ (cube (- x1 x2)) (cube (- (+ x3 x4) (* x4 x3))))) (* (* (+ (cube x2) (cube x3)) x1) (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))))) (* (- x2 (+ (- x3 x4) (- x1))) (+ (+ x2 x1) (- x3 x4)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (69 enodes)
* * [misc]simplify:  iters left: 4 (169 enodes)
* * [misc]simplify:  iters left: 3 (335 enodes)
* [exit]simplify:  Simplified to (* (+ (* (- x1 x2) (- x1 x2)) (* (- (+ x3 x4) (+ (* x3 x4) (- x1 x2))) (- (+ x3 x4) (* x3 x4)))) (* (+ (- x3 x4) (+ x1 x2)) (* (- (sqr x3) (* (- x3 x2) x2)) (- (+ (- x2 x3) x4) (- x1)))))
* [exit]simplify:  Simplified to (* (+ (* (- x1 x2) (- x1 x2)) (* (- (+ x3 x4) (+ (* x3 x4) (- x1 x2))) (- (+ x3 x4) (* x3 x4)))) (* (+ (- x3 x4) (+ x1 x2)) (* (- (sqr x3) (* (- x3 x2) x2)) (- (+ (- x2 x3) x4) (- x1)))))
* * * * [misc]progress:  [ 186 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (48 enodes)
* * [misc]simplify:  iters left: 5 (121 enodes)
* * [misc]simplify:  iters left: 4 (265 enodes)
* [exit]simplify:  Simplified to (+ (* (* (- x2 (+ (- x3 x4) (- x1))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (- x2 x3)) (+ (cube (- (+ x3 x4) (* x4 x3))) (cube (- x1 x2)))) (* (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (* (+ x3 x2) (* (- x2 x3) x1))))) (* (+ (* (* (- x2 x3) (- x1 x2)) (- x1 x2)) (* (* (- x2 x3) (- (+ x3 x4) (* x4 x3))) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (+ (* (- x2 (+ (- x3 x4) (- x1))) (* (- (+ x2 x1) (- x3 x4)) (* x3 (+ (+ x2 x1) (- x3 x4))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))))
* [exit]simplify:  Simplified to (+ (* (* (- x2 (+ (- x3 x4) (- x1))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (- x2 x3)) (+ (cube (- (+ x3 x4) (* x4 x3))) (cube (- x1 x2)))) (* (- (* (- (+ x3 x4) (* x4 x3)) (- (+ x3 x4) (* x4 x3))) (* (- x1 x2) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (* (+ x3 x2) (* (- x2 x3) x1))))) (* (+ (* (* (- x2 x3) (- x1 x2)) (- x1 x2)) (* (* (- x2 x3) (- (+ x3 x4) (* x4 x3))) (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (+ (* (- x2 (+ (- x3 x4) (- x1))) (* (- (+ x2 x1) (- x3 x4)) (* x3 (+ (+ x2 x1) (- x3 x4))))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (53 enodes)
* * [misc]simplify:  iters left: 4 (116 enodes)
* * [misc]simplify:  iters left: 3 (213 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (- x3 x4) (+ x1 x2)) (- x2 x3)) (- (+ (- x2 x3) x4) (- x1))) (- (+ (* (- x1 x2) (- x1 x2)) (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4)))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (+ (- x3 x4) (+ x1 x2)) (- x2 x3)) (- (+ (- x2 x3) x4) (- x1))) (- (+ (* (- x1 x2) (- x1 x2)) (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4)))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4)))))
* * * * [misc]progress:  [ 187 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (48 enodes)
* * [misc]simplify:  iters left: 5 (131 enodes)
* * [misc]simplify:  iters left: 4 (327 enodes)
* [exit]simplify:  Simplified to (+ (* (* (- (- x2 (- x1)) (- x3 x4)) (+ (+ x2 x1) (- x3 x4))) (- (* (* (- (* x3 x3) (* x2 (- x3 x2))) x2) (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3))))) (* (* (+ (cube x2) (cube x3)) x1) (- (- (- x1 x2) x3) (- x4 (* x4 x3)))))) (* (+ (* x3 (* (- (- x2 (- x1)) (- x3 x4)) (* (- (+ x2 x1) (- x3 x4)) (+ (+ x2 x1) (- x3 x4))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (+ (+ x2 x1) (- x3 x4)))) (* (- (* x3 x3) (* x2 (- x3 x2))) (- (- (- x1 x2) x3) (- x4 (* x4 x3))))))
* [exit]simplify:  Simplified to (+ (* (* (- (- x2 (- x1)) (- x3 x4)) (+ (+ x2 x1) (- x3 x4))) (- (* (* (- (* x3 x3) (* x2 (- x3 x2))) x2) (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3))))) (* (* (+ (cube x2) (cube x3)) x1) (- (- (- x1 x2) x3) (- x4 (* x4 x3)))))) (* (+ (* x3 (* (- (- x2 (- x1)) (- x3 x4)) (* (- (+ x2 x1) (- x3 x4)) (+ (+ x2 x1) (- x3 x4))))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (+ (+ x2 x1) (- x3 x4)))) (* (- (* x3 x3) (* x2 (- x3 x2))) (- (- (- x1 x2) x3) (- x4 (* x4 x3))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (63 enodes)
* * [misc]simplify:  iters left: 4 (134 enodes)
* * [misc]simplify:  iters left: 3 (278 enodes)
* [exit]simplify:  Simplified to (* (* (- (- (- x1 x3) x2) (- x4 (* x3 x4))) (- (sqr x3) (* (- x3 x2) x2))) (* (- (+ x2 x3) (- x4 x1)) (- (+ (- x2 x3) x4) (- x1))))
* [exit]simplify:  Simplified to (* (* (- (- (- x1 x3) x2) (- x4 (* x3 x4))) (- (sqr x3) (* (- x3 x2) x2))) (* (- (+ x2 x3) (- x4 x1)) (- (+ (- x2 x3) x4) (- x1))))
* * * * [misc]progress:  [ 188 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (43 enodes)
* * [misc]simplify:  iters left: 5 (109 enodes)
* * [misc]simplify:  iters left: 4 (246 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* x4 x3) (- (- x1 x2) (+ x3 x4))) (- x2 x3)) (+ (* (* (- x2 (+ (- x3 x4) (- x1))) (- (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (- x3 x4)))) x3) (* x1 (* (* (+ (+ x2 x1) (- x3 x4)) (+ x2 (+ (- x3 x4) (- x1)))) (* (- x2 (+ (- x3 x4) (- x1))) x4))))) (* (- (* (- x2 x3) (* x2 (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3)))))) (* (* (- x2 x3) (* (+ x3 x2) x1)) (+ (* x4 x3) (- (- x1 x2) (+ x3 x4))))) (* (- x2 (+ (- x3 x4) (- x1))) (+ (+ x2 x1) (- x3 x4)))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* x4 x3) (- (- x1 x2) (+ x3 x4))) (- x2 x3)) (+ (* (* (- x2 (+ (- x3 x4) (- x1))) (- (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (- x3 x4)))) x3) (* x1 (* (* (+ (+ x2 x1) (- x3 x4)) (+ x2 (+ (- x3 x4) (- x1)))) (* (- x2 (+ (- x3 x4) (- x1))) x4))))) (* (- (* (- x2 x3) (* x2 (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3)))))) (* (* (- x2 x3) (* (+ x3 x2) x1)) (+ (* x4 x3) (- (- x1 x2) (+ x3 x4))))) (* (- x2 (+ (- x3 x4) (- x1))) (+ (+ x2 x1) (- x3 x4)))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (19 enodes)
* * [misc]simplify:  iters left: 5 (47 enodes)
* * [misc]simplify:  iters left: 4 (97 enodes)
* * [misc]simplify:  iters left: 3 (202 enodes)
* * [misc]simplify:  iters left: 2 (493 enodes)
* [exit]simplify:  Simplified to (* (+ x4 (- (- x2 x3) (- x1))) (* (* (+ (- x3 x4) (+ x1 x2)) (- x2 x3)) (+ (- (- x1 x2) (+ x3 x4)) (* x3 x4))))
* [exit]simplify:  Simplified to (* (+ x4 (- (- x2 x3) (- x1))) (* (* (+ (- x3 x4) (+ x1 x2)) (- x2 x3)) (+ (- (- x1 x2) (+ x3 x4)) (* x3 x4))))
* * * * [misc]progress:  [ 189 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3)))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3))))
* * [misc]simplify:  iters left: 6 (43 enodes)
* * [misc]simplify:  iters left: 5 (124 enodes)
* * [misc]simplify:  iters left: 4 (311 enodes)
* [exit]simplify:  Simplified to (+ (* (- (cube (* x2 (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (cube (* x1 (+ x3 x2)))) (* (- (- x2 (- x1)) (- x3 x4)) (+ (+ x2 x1) (- x3 x4)))) (* (+ (+ (sqr (* x1 (+ x3 x2))) (* (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (* (* x2 x1) (+ x3 x2)))) (* (* x2 (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* x2 (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2))))) (+ (* (- (- x2 (- x1)) (- x3 x4)) (* (* x3 (+ (+ x2 x1) (- x3 x4))) (- (+ x2 x1) (- x3 x4)))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))))
* [exit]simplify:  Simplified to (+ (* (- (cube (* x2 (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2)))) (cube (* x1 (+ x3 x2)))) (* (- (- x2 (- x1)) (- x3 x4)) (+ (+ x2 x1) (- x3 x4)))) (* (+ (+ (sqr (* x1 (+ x3 x2))) (* (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (* (* x2 x1) (+ x3 x2)))) (* (* x2 (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* x2 (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2))))) (+ (* (- (- x2 (- x1)) (- x3 x4)) (* (* x3 (+ (+ x2 x1) (- x3 x4))) (- (+ x2 x1) (- x3 x4)))) (* (* (* x1 x4) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (+ (+ x2 x1) (- x3 x4))))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (81 enodes)
* * [misc]simplify:  iters left: 4 (209 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ (+ x1 x2) (- x3 x4)) (- x2 (+ (- x1) (- x3 x4)))) (* (+ x2 x3) x1)) (+ (* (+ x2 x3) x1) (* (- (+ x3 x4) (- (* x3 x4) (- x1 x2))) x2))) (* (sqr (* (- (+ x3 x4) (- (* x3 x4) (- x1 x2))) x2)) (* (+ (+ x1 x2) (- x3 x4)) (- x2 (+ (- x1) (- x3 x4))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ (+ x1 x2) (- x3 x4)) (- x2 (+ (- x1) (- x3 x4)))) (* (+ x2 x3) x1)) (+ (* (+ x2 x3) x1) (* (- (+ x3 x4) (- (* x3 x4) (- x1 x2))) x2))) (* (sqr (* (- (+ x3 x4) (- (* x3 x4) (- x1 x2))) x2)) (* (+ (+ x1 x2) (- x3 x4)) (- x2 (+ (- x1) (- x3 x4))))))
* * * * [misc]progress:  [ 190 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1))))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (38 enodes)
* * [misc]simplify:  iters left: 5 (115 enodes)
* * [misc]simplify:  iters left: 4 (277 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 (+ (- x3 x4) (- x1))) (+ (+ x2 x1) (- x3 x4))) (+ (* x2 (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (+ x3 x2) x1))) (- (* x2 (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (+ x3 x2) x1))) (* (+ (* (* (- x2 (+ (- x3 x4) (- x1))) x3) (* (- (+ x2 x1) (- x3 x4)) (+ (+ x2 x1) (- x3 x4)))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (+ (+ x2 x1) (- x3 x4)))) (+ (* x2 (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (+ x3 x2) x1))))
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 (+ (- x3 x4) (- x1))) (+ (+ x2 x1) (- x3 x4))) (+ (* x2 (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (+ x3 x2) x1))) (- (* x2 (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (+ x3 x2) x1))) (* (+ (* (* (- x2 (+ (- x3 x4) (- x1))) x3) (* (- (+ x2 x1) (- x3 x4)) (+ (+ x2 x1) (- x3 x4)))) (* (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* x1 x4)) (+ (+ x2 x1) (- x3 x4)))) (+ (* x2 (+ (- (+ x3 x4) (* x4 x3)) (- x1 x2))) (* (+ x3 x2) x1))))
* [enter]simplify:  Simplifying (* (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (21 enodes)
* * [misc]simplify:  iters left: 5 (65 enodes)
* * [misc]simplify:  iters left: 4 (147 enodes)
* * [misc]simplify:  iters left: 3 (372 enodes)
* [exit]simplify:  Simplified to (* (+ (* (+ x2 x3) x1) (* (- (+ x3 x4) (- (* x3 x4) (- x1 x2))) x2)) (* (+ (- x3 x4) (+ x1 x2)) (- x2 (+ (- x1) (- x3 x4)))))
* [exit]simplify:  Simplified to (* (+ (* (+ x2 x3) x1) (* (- (+ x3 x4) (- (* x3 x4) (- x1 x2))) x2)) (* (+ (- x3 x4) (+ x1 x2)) (- x2 (+ (- x1) (- x3 x4)))))
* * * * [misc]progress:  [ 191 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (59 enodes)
* * [misc]simplify:  iters left: 5 (162 enodes)
* * [misc]simplify:  iters left: 4 (472 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ (* x2 (+ x1 x2)) (sqr x1)) (- (sqr x3) (* x2 (- x3 x2)))) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))))) (* (+ (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (+ x2 (- x3 x4)) (- x1)) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4))))) (sqr (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))))) (- (* (+ (* (- (cube (+ x3 x4)) (cube (* x3 x4))) (+ (* x2 (+ x1 x2)) (sqr x1))) (* (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (* (+ x3 x4) (+ x3 x4))) (- (cube x1) (cube x2)))) (+ (cube x2) (* (* (- x3 x2) x3) x2))) (* (* (* (+ (cube x3) (cube x2)) x1) (+ (* x2 (+ x1 x2)) (sqr x1))) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (* (+ x3 x4) (+ x3 x4)))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ (* x2 (+ x1 x2)) (sqr x1)) (- (sqr x3) (* x2 (- x3 x2)))) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))))) (* (+ (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (+ x2 (- x3 x4)) (- x1)) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4))))) (sqr (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))))) (- (* (+ (* (- (cube (+ x3 x4)) (cube (* x3 x4))) (+ (* x2 (+ x1 x2)) (sqr x1))) (* (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (* (+ x3 x4) (+ x3 x4))) (- (cube x1) (cube x2)))) (+ (cube x2) (* (* (- x3 x2) x3) x2))) (* (* (* (+ (cube x3) (cube x2)) x1) (+ (* x2 (+ x1 x2)) (sqr x1))) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (* (+ x3 x4) (+ x3 x4)))))))
* [enter]simplify:  Simplifying (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (37 enodes)
* * [misc]simplify:  iters left: 5 (102 enodes)
* * [misc]simplify:  iters left: 4 (289 enodes)
* [exit]simplify:  Simplified to (* (+ (sqr (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))) (- (* (* (- (+ x1 x2) (- x3 x4)) x3) (* (- (+ x1 x2) (- x3 x4)) x3)) (* (- (+ x2 x3) (- x4 (- x1))) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4)))))) (* (* (+ (* x2 (+ x1 x2)) (sqr x1)) (+ (* x2 x2) (* (- x3 x2) x3))) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))))))
* [exit]simplify:  Simplified to (* (+ (sqr (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))) (- (* (* (- (+ x1 x2) (- x3 x4)) x3) (* (- (+ x1 x2) (- x3 x4)) x3)) (* (- (+ x2 x3) (- x4 (- x1))) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4)))))) (* (* (+ (* x2 (+ x1 x2)) (sqr x1)) (+ (* x2 x2) (* (- x3 x2) x3))) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))))))
* * * * [misc]progress:  [ 192 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (143 enodes)
* * [misc]simplify:  iters left: 4 (371 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ (* x2 (+ x1 x2)) (sqr x1))) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ x2 (- x1)) (- x3 x4)))))) (* (+ (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (+ x2 (- x1)) (- x3 x4)) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4))))) (sqr (* (* x1 x4) (+ (+ x2 (- x1)) (- x3 x4))))) (- (* (* x2 (- x2 x3)) (+ (* (- (cube (+ x3 x4)) (cube (* x3 x4))) (+ (* x2 (+ x1 x2)) (sqr x1))) (* (- (cube x1) (cube x2)) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))))) (* (* (* (- x2 x3) (* (+ x2 x3) x1)) (+ (* x2 (+ x1 x2)) (sqr x1))) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))))))
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x3) (+ (* x2 (+ x1 x2)) (sqr x1))) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ x2 (- x1)) (- x3 x4)))))) (* (+ (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (+ x2 (- x1)) (- x3 x4)) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4))))) (sqr (* (* x1 x4) (+ (+ x2 (- x1)) (- x3 x4))))) (- (* (* x2 (- x2 x3)) (+ (* (- (cube (+ x3 x4)) (cube (* x3 x4))) (+ (* x2 (+ x1 x2)) (sqr x1))) (* (- (cube x1) (cube x2)) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))))) (* (* (* (- x2 x3) (* (+ x2 x3) x1)) (+ (* x2 (+ x1 x2)) (sqr x1))) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))))))
* [enter]simplify:  Simplifying (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (34 enodes)
* * [misc]simplify:  iters left: 5 (89 enodes)
* * [misc]simplify:  iters left: 4 (239 enodes)
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (+ (* x2 (+ x1 x2)) (sqr x1))) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))) (+ (sqr (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))))))
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (+ (* x2 (+ x1 x2)) (sqr x1))) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))) (+ (sqr (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))))))
* * * * [misc]progress:  [ 193 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (55 enodes)
* * [misc]simplify:  iters left: 5 (155 enodes)
* * [misc]simplify:  iters left: 4 (474 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2)))) (* (* (+ (* x3 x4) (+ x3 x4)) (+ (* x2 (+ x1 x2)) (sqr x1))) (+ (* (- x3 x2) x3) (* x2 x2)))) (* (+ (sqr (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))))) (- (* (+ (* (+ (* x3 x4) (+ x3 x4)) (- (cube x1) (cube x2))) (* (* (- (+ x3 x4) (* x3 x4)) (+ (* x3 x4) (+ x3 x4))) (+ (* x2 (+ x1 x2)) (sqr x1)))) (+ (* (* (- x3 x2) x3) x2) (cube x2))) (* (* (* (+ (cube x2) (cube x3)) x1) (+ (* x3 x4) (+ x3 x4))) (+ (* x2 (+ x1 x2)) (sqr x1))))))
* [exit]simplify:  Simplified to (+ (* (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2)))) (* (* (+ (* x3 x4) (+ x3 x4)) (+ (* x2 (+ x1 x2)) (sqr x1))) (+ (* (- x3 x2) x3) (* x2 x2)))) (* (+ (sqr (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))))) (- (* (+ (* (+ (* x3 x4) (+ x3 x4)) (- (cube x1) (cube x2))) (* (* (- (+ x3 x4) (* x3 x4)) (+ (* x3 x4) (+ x3 x4))) (+ (* x2 (+ x1 x2)) (sqr x1)))) (+ (* (* (- x3 x2) x3) x2) (cube x2))) (* (* (* (+ (cube x2) (cube x3)) x1) (+ (* x3 x4) (+ x3 x4))) (+ (* x2 (+ x1 x2)) (sqr x1))))))
* [enter]simplify:  Simplifying (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (91 enodes)
* * [misc]simplify:  iters left: 4 (280 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ (+ x3 x4) (* x3 x4)) (+ (* x2 (+ x1 x2)) (sqr x1)))) (+ (sqr (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))))))
* [exit]simplify:  Simplified to (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ (+ x3 x4) (* x3 x4)) (+ (* x2 (+ x1 x2)) (sqr x1)))) (+ (sqr (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))))))
* * * * [misc]progress:  [ 194 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (136 enodes)
* * [misc]simplify:  iters left: 4 (367 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 (+ x1 x2)) (sqr x1)) (* (+ (* x3 x4) (+ x3 x4)) (- x2 x3))) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))))) (* (- (* (* (- x2 x3) x2) (+ (* (- (cube x1) (cube x2)) (+ (* x3 x4) (+ x3 x4))) (* (+ (* x2 (+ x1 x2)) (sqr x1)) (* (- (+ x3 x4) (* x3 x4)) (+ (* x3 x4) (+ x3 x4)))))) (* (* (- x2 x3) (* (+ x2 x3) x1)) (* (+ (* x3 x4) (+ x3 x4)) (+ (* x2 (+ x1 x2)) (sqr x1))))) (+ (sqr (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))) (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (+ (- x3 x4) x2) (- x1)) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4))))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 (+ x1 x2)) (sqr x1)) (* (+ (* x3 x4) (+ x3 x4)) (- x2 x3))) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))))) (* (- (* (* (- x2 x3) x2) (+ (* (- (cube x1) (cube x2)) (+ (* x3 x4) (+ x3 x4))) (* (+ (* x2 (+ x1 x2)) (sqr x1)) (* (- (+ x3 x4) (* x3 x4)) (+ (* x3 x4) (+ x3 x4)))))) (* (* (- x2 x3) (* (+ x2 x3) x1)) (* (+ (* x3 x4) (+ x3 x4)) (+ (* x2 (+ x1 x2)) (sqr x1))))) (+ (sqr (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))) (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (+ (- x3 x4) x2) (- x1)) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4))))))))
* [enter]simplify:  Simplifying (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (78 enodes)
* * [misc]simplify:  iters left: 4 (211 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* x2 (+ x1 x2)) (sqr x1)) (* (+ (+ x3 x4) (* x3 x4)) (- x2 x3))) (+ (sqr (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))))))
* [exit]simplify:  Simplified to (* (* (+ (* x2 (+ x1 x2)) (sqr x1)) (* (+ (+ x3 x4) (* x3 x4)) (- x2 x3))) (+ (sqr (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))))))
* * * * [misc]progress:  [ 195 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (56 enodes)
* * [misc]simplify:  iters left: 5 (155 enodes)
* * [misc]simplify:  iters left: 4 (474 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ x1 x2) (+ (* (- x3 x2) x3) (* x2 x2))) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))))) (* (+ (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (+ x2 (- x3 x4)) (- x1)) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4))))) (sqr (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))))) (- (* (* (+ (* (- x3 x2) x3) (* x2 x2)) x2) (+ (* (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4)))) (* (- x1 x2) (+ x1 x2))) (* (+ x1 x2) (- (cube (+ x3 x4)) (cube (* x3 x4)))))) (* (+ (* (sqr (+ x3 x4)) (+ x1 x2)) (* (* (+ x1 x2) (* x3 x4)) (+ (+ x3 x4) (* x3 x4)))) (* x1 (+ (cube x3) (cube x2)))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ x1 x2) (+ (* (- x3 x2) x3) (* x2 x2))) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))))) (* (+ (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (+ x2 (- x3 x4)) (- x1)) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4))))) (sqr (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))))) (- (* (* (+ (* (- x3 x2) x3) (* x2 x2)) x2) (+ (* (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4)))) (* (- x1 x2) (+ x1 x2))) (* (+ x1 x2) (- (cube (+ x3 x4)) (cube (* x3 x4)))))) (* (+ (* (sqr (+ x3 x4)) (+ x1 x2)) (* (* (+ x1 x2) (* x3 x4)) (+ (+ x3 x4) (* x3 x4)))) (* x1 (+ (cube x3) (cube x2)))))))
* [enter]simplify:  Simplifying (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (34 enodes)
* * [misc]simplify:  iters left: 5 (93 enodes)
* * [misc]simplify:  iters left: 4 (246 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 x2) (* (- x3 x2) x3)) (+ x1 x2)) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (+ (sqr (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 x2) (* (- x3 x2) x3)) (+ x1 x2)) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (+ (sqr (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))))))
* * * * [misc]progress:  [ 196 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (134 enodes)
* * [misc]simplify:  iters left: 4 (365 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (* (+ x3 x4) (+ x1 x2)) (+ x3 x4)) (* (* (+ x1 x2) (* x3 x4)) (+ (* x3 x4) (+ x3 x4)))) (- x2 x3)) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))))) (* (- (* (* x2 (- x2 x3)) (+ (* (- (sqr x1) (* x2 x2)) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))))) (* (- (cube (+ x3 x4)) (cube (* x3 x4))) (+ x1 x2)))) (* (* (* x1 (+ x2 x3)) (- x2 x3)) (+ (* (* (+ x3 x4) (+ x1 x2)) (+ x3 x4)) (* (* (+ x1 x2) (* x3 x4)) (+ (* x3 x4) (+ x3 x4)))))) (+ (sqr (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1))))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (* (+ x3 x4) (+ x1 x2)) (+ x3 x4)) (* (* (+ x1 x2) (* x3 x4)) (+ (* x3 x4) (+ x3 x4)))) (- x2 x3)) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))))) (* (- (* (* x2 (- x2 x3)) (+ (* (- (sqr x1) (* x2 x2)) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))))) (* (- (cube (+ x3 x4)) (cube (* x3 x4))) (+ x1 x2)))) (* (* (* x1 (+ x2 x3)) (- x2 x3)) (+ (* (* (+ x3 x4) (+ x1 x2)) (+ x3 x4)) (* (* (+ x1 x2) (* x3 x4)) (+ (* x3 x4) (+ x3 x4)))))) (+ (sqr (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1))))))))
* [enter]simplify:  Simplifying (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (78 enodes)
* * [misc]simplify:  iters left: 4 (208 enodes)
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (+ x1 x2)) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (+ (sqr (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))))))
* [exit]simplify:  Simplified to (* (* (* (- x2 x3) (+ x1 x2)) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (+ (sqr (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))))))
* * * * [misc]progress:  [ 197 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (148 enodes)
* * [misc]simplify:  iters left: 4 (452 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ (+ x3 x4) (* x3 x4)) (+ x1 x2)) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))))) (* (- (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) x2) (+ (* (- (sqr (+ x3 x4)) (* (* x3 x4) (* x3 x4))) (+ x1 x2)) (* (+ (+ x3 x4) (* x3 x4)) (* (- x1 x2) (+ x1 x2))))) (* (* x1 (+ (cube x2) (cube x3))) (* (+ (+ x3 x4) (* x3 x4)) (+ x1 x2)))) (+ (sqr (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1)))))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ (+ x3 x4) (* x3 x4)) (+ x1 x2)) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))))) (* (- (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) x2) (+ (* (- (sqr (+ x3 x4)) (* (* x3 x4) (* x3 x4))) (+ x1 x2)) (* (+ (+ x3 x4) (* x3 x4)) (* (- x1 x2) (+ x1 x2))))) (* (* x1 (+ (cube x2) (cube x3))) (* (+ (+ x3 x4) (* x3 x4)) (+ x1 x2)))) (+ (sqr (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1)))))))))
* [enter]simplify:  Simplifying (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (82 enodes)
* * [misc]simplify:  iters left: 4 (257 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* (- x3 x2) x3) (* x2 x2)) (* (+ (* x3 x4) (+ x3 x4)) (+ x1 x2))) (+ (sqr (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4))))))
* [exit]simplify:  Simplified to (* (* (+ (* (- x3 x2) x3) (* x2 x2)) (* (+ (* x3 x4) (+ x3 x4)) (+ x1 x2))) (+ (sqr (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4))))))
* * * * [misc]progress:  [ 198 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (48 enodes)
* * [misc]simplify:  iters left: 5 (127 enodes)
* * [misc]simplify:  iters left: 4 (352 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))))) (* (* (+ (+ x3 x4) (* x3 x4)) (+ x1 x2)) (- x2 x3))) (* (- (* (* x2 (- x2 x3)) (+ (* (* (- x1 x2) (+ x1 x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (* (* x3 x4) (* x3 x4)))))) (* (* (- x2 x3) (* x1 (+ x2 x3))) (* (+ (+ x3 x4) (* x3 x4)) (+ x1 x2)))) (+ (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (+ x2 (- x3 x4)) (- x1)) (* (* (* x1 x3) x4) (- (+ x1 x2) (- x3 x4))))) (sqr (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))))))
* [exit]simplify:  Simplified to (+ (* (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))))) (* (* (+ (+ x3 x4) (* x3 x4)) (+ x1 x2)) (- x2 x3))) (* (- (* (* x2 (- x2 x3)) (+ (* (* (- x1 x2) (+ x1 x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (* (* x3 x4) (* x3 x4)))))) (* (* (- x2 x3) (* x1 (+ x2 x3))) (* (+ (+ x3 x4) (* x3 x4)) (+ x1 x2)))) (+ (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (+ x2 (- x3 x4)) (- x1)) (* (* (* x1 x3) x4) (- (+ x1 x2) (- x3 x4))))) (sqr (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))))))
* [enter]simplify:  Simplifying (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (67 enodes)
* * [misc]simplify:  iters left: 4 (192 enodes)
* [exit]simplify:  Simplified to (* (+ (sqr (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))))) (* (* (+ x1 x2) (- x2 x3)) (+ (* x3 x4) (+ x3 x4))))
* [exit]simplify:  Simplified to (* (+ (sqr (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))))) (* (* (+ x1 x2) (- x2 x3)) (+ (* x3 x4) (+ x3 x4))))
* * * * [misc]progress:  [ 199 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (51 enodes)
* * [misc]simplify:  iters left: 5 (131 enodes)
* * [misc]simplify:  iters left: 4 (323 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (- (- (+ x3 x4) (* x3 x4)) (- x1 x2)) (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- x1 x2))) (- (sqr x3) (* x2 (- x3 x2)))) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))))) (* (- (* (* x2 (- (sqr x3) (* x2 (- x3 x2)))) (+ (cube (- (+ x3 x4) (* x3 x4))) (cube (- x1 x2)))) (* (* (+ (cube x3) (cube x2)) x1) (+ (* (- (- (+ x3 x4) (* x3 x4)) (- x1 x2)) (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- x1 x2))))) (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1))) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1))))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (- (- (+ x3 x4) (* x3 x4)) (- x1 x2)) (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- x1 x2))) (- (sqr x3) (* x2 (- x3 x2)))) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))))) (* (- (* (* x2 (- (sqr x3) (* x2 (- x3 x2)))) (+ (cube (- (+ x3 x4) (* x3 x4))) (cube (- x1 x2)))) (* (* (+ (cube x3) (cube x2)) x1) (+ (* (- (- (+ x3 x4) (* x3 x4)) (- x1 x2)) (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- x1 x2))))) (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1))) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1))))))))
* [enter]simplify:  Simplifying (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (34 enodes)
* * [misc]simplify:  iters left: 5 (85 enodes)
* * [misc]simplify:  iters left: 4 (212 enodes)
* [exit]simplify:  Simplified to (* (* (- (sqr x3) (* x2 (- x3 x2))) (+ (sqr (- x1 x2)) (* (- (- (+ x3 x4) (* x3 x4)) (- x1 x2)) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))) (- (* (* (- (+ x1 x2) (- x3 x4)) x3) (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (- x3 x4) (+ x2 (- x1))) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4)))))))
* [exit]simplify:  Simplified to (* (* (- (sqr x3) (* x2 (- x3 x2))) (+ (sqr (- x1 x2)) (* (- (- (+ x3 x4) (* x3 x4)) (- x1 x2)) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))) (- (* (* (- (+ x1 x2) (- x3 x4)) x3) (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (- x3 x4) (+ x2 (- x1))) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4)))))))
* * * * [misc]progress:  [ 200 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (47 enodes)
* * [misc]simplify:  iters left: 5 (110 enodes)
* * [misc]simplify:  iters left: 4 (244 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (sqr (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))))) (- (* (* (- x2 x3) x2) (+ (cube (- x1 x2)) (cube (- (+ x3 x4) (* x3 x4))))) (* (* (* (- x2 x3) (+ x2 x3)) x1) (+ (* (- (- (+ x3 x4) (* x3 x4)) (- x1 x2)) (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- x1 x2)))))) (* (+ (* (* (- x2 x3) (- (+ x3 x4) (* x3 x4))) (- (- (+ x3 x4) (* x3 x4)) (- x1 x2))) (* (- x2 x3) (* (- x1 x2) (- x1 x2)))) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))))))
* [exit]simplify:  Simplified to (+ (* (+ (sqr (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))))) (- (* (* (- x2 x3) x2) (+ (cube (- x1 x2)) (cube (- (+ x3 x4) (* x3 x4))))) (* (* (* (- x2 x3) (+ x2 x3)) x1) (+ (* (- (- (+ x3 x4) (* x3 x4)) (- x1 x2)) (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- x1 x2)))))) (* (+ (* (* (- x2 x3) (- (+ x3 x4) (* x3 x4))) (- (- (+ x3 x4) (* x3 x4)) (- x1 x2))) (* (- x2 x3) (* (- x1 x2) (- x1 x2)))) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))))))
* [enter]simplify:  Simplifying (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (70 enodes)
* * [misc]simplify:  iters left: 4 (170 enodes)
* * [misc]simplify:  iters left: 3 (445 enodes)
* [exit]simplify:  Simplified to (* (+ (* (* (- x2 x3) (- (+ x3 x4) (* x3 x4))) (- (- (+ x3 x4) (* x3 x4)) (- x1 x2))) (* (sqr (- x1 x2)) (- x2 x3))) (+ (sqr (* (* x1 x4) (- (+ (- x1) (+ x2 x3)) x4))) (* (* (+ (+ x4 x1) (- x2 x3)) x3) (- (* (+ (+ x4 x1) (- x2 x3)) x3) (* (* x1 x4) (- (+ (- x1) (+ x2 x3)) x4))))))
* [exit]simplify:  Simplified to (* (+ (* (* (- x2 x3) (- (+ x3 x4) (* x3 x4))) (- (- (+ x3 x4) (* x3 x4)) (- x1 x2))) (* (sqr (- x1 x2)) (- x2 x3))) (+ (sqr (* (* x1 x4) (- (+ (- x1) (+ x2 x3)) x4))) (* (* (+ (+ x4 x1) (- x2 x3)) x3) (- (* (+ (+ x4 x1) (- x2 x3)) x3) (* (* x1 x4) (- (+ (- x1) (+ x2 x3)) x4))))))
* * * * [misc]progress:  [ 201 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (47 enodes)
* * [misc]simplify:  iters left: 5 (120 enodes)
* * [misc]simplify:  iters left: 4 (313 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (sqr (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))) (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (- x3 x4) (+ x2 (- x1))) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4)))))) (- (* x2 (* (- (* (- x1 x2) (- x1 x2)) (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4)))) (+ (* (- x3 x2) x3) (* x2 x2)))) (* (* (+ (cube x2) (cube x3)) x1) (+ (* x3 x4) (- (- x1 x2) (+ x3 x4)))))) (* (* (+ (* (- x3 x2) x3) (* x2 x2)) (+ (* x3 x4) (- (- x1 x2) (+ x3 x4)))) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))))))
* [exit]simplify:  Simplified to (+ (* (+ (sqr (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))) (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (- x3 x4) (+ x2 (- x1))) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4)))))) (- (* x2 (* (- (* (- x1 x2) (- x1 x2)) (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4)))) (+ (* (- x3 x2) x3) (* x2 x2)))) (* (* (+ (cube x2) (cube x3)) x1) (+ (* x3 x4) (- (- x1 x2) (+ x3 x4)))))) (* (* (+ (* (- x3 x2) x3) (* x2 x2)) (+ (* x3 x4) (- (- x1 x2) (+ x3 x4)))) (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))))))
* [enter]simplify:  Simplifying (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (79 enodes)
* * [misc]simplify:  iters left: 4 (196 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (- (+ (* x3 x4) (- x1 x2)) (+ x3 x4))) (+ (sqr (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))))))
* [exit]simplify:  Simplified to (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) (- (+ (* x3 x4) (- x1 x2)) (+ x3 x4))) (+ (sqr (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))))))
* * * * [misc]progress:  [ 202 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (43 enodes)
* * [misc]simplify:  iters left: 5 (99 enodes)
* * [misc]simplify:  iters left: 4 (235 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (- (* (* (- x2 x3) x2) (- (* (- x1 x2) (- x1 x2)) (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- x2 x3) (* x1 (+ x2 x3))))) (+ (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (+ (- x1) (- x3 x4)) x2) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4))))) (sqr (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))))))
* [exit]simplify:  Simplified to (+ (* (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (- (* (* (- x2 x3) x2) (- (* (- x1 x2) (- x1 x2)) (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- x2 x3) (* x1 (+ x2 x3))))) (+ (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (+ (- x1) (- x3 x4)) x2) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4))))) (sqr (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))))))
* [enter]simplify:  Simplifying (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (64 enodes)
* * [misc]simplify:  iters left: 4 (152 enodes)
* * [misc]simplify:  iters left: 3 (432 enodes)
* [exit]simplify:  Simplified to (* (+ (sqr (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))) (- (* (* (+ (+ x4 x2) (- x1 x3)) x3) (* (+ (+ x4 x2) (- x1 x3)) x3)) (* (+ (+ x2 (- x3 x4)) (- x1)) (* (* (* x3 x1) x4) (+ (+ x4 x2) (- x1 x3)))))) (* (- x2 x3) (- (- x1 (+ x4 x2)) (- x3 (* x3 x4)))))
* [exit]simplify:  Simplified to (* (+ (sqr (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))) (- (* (* (+ (+ x4 x2) (- x1 x3)) x3) (* (+ (+ x4 x2) (- x1 x3)) x3)) (* (+ (+ x2 (- x3 x4)) (- x1)) (* (* (* x3 x1) x4) (+ (+ x4 x2) (- x1 x3)))))) (* (- x2 x3) (- (- x1 (+ x4 x2)) (- x3 (* x3 x4)))))
* * * * [misc]progress:  [ 203 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3)))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3))))
* * [misc]simplify:  iters left: 6 (41 enodes)
* * [misc]simplify:  iters left: 5 (113 enodes)
* * [misc]simplify:  iters left: 4 (303 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4)))) (+ (* (* x2 (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2))) (* x2 (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2)))) (+ (* (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2)) (* (* x1 x2) (+ x2 x3))) (sqr (* x1 (+ x2 x3)))))) (* (- (cube (* x2 (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2)))) (cube (* x1 (+ x2 x3)))) (+ (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (- (+ (+ x2 x3) (- x1)) x4) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4))))) (sqr (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4))))))
* [exit]simplify:  Simplified to (+ (* (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4)))) (+ (* (* x2 (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2))) (* x2 (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2)))) (+ (* (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2)) (* (* x1 x2) (+ x2 x3))) (sqr (* x1 (+ x2 x3)))))) (* (- (cube (* x2 (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2)))) (cube (* x1 (+ x2 x3)))) (+ (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (- (+ (+ x2 x3) (- x1)) x4) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4))))) (sqr (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4))))))
* [enter]simplify:  Simplifying (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (32 enodes)
* * [misc]simplify:  iters left: 5 (97 enodes)
* * [misc]simplify:  iters left: 4 (248 enodes)
* [exit]simplify:  Simplified to (* (+ (sqr (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2))))) (+ (* (* (+ x2 x3) x1) (* (+ x2 x3) x1)) (* (* (* (+ x2 x3) x1) x2) (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))))) (+ (sqr (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))))))
* [exit]simplify:  Simplified to (* (+ (sqr (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2))))) (+ (* (* (+ x2 x3) x1) (* (+ x2 x3) x1)) (* (* (* (+ x2 x3) x1) x2) (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))))) (+ (sqr (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))))))
* * * * [misc]progress:  [ 204 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1))))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* [enter]simplify:  Simplifying (+ (* (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (37 enodes)
* * [misc]simplify:  iters left: 5 (105 enodes)
* * [misc]simplify:  iters left: 4 (278 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (sqr (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))) (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (- x3 x4) (+ x2 (- x1))) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4)))))) (* (- (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x3 x4)))) (* x1 (+ x2 x3))) (+ (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x3 x4)))) (* x1 (+ x2 x3))))) (* (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))))) (+ (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x3 x4)))) (* x1 (+ x2 x3)))))
* [exit]simplify:  Simplified to (+ (* (+ (sqr (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))) (- (sqr (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (- x3 x4) (+ x2 (- x1))) (* (* (* x1 x4) x3) (- (+ x1 x2) (- x3 x4)))))) (* (- (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x3 x4)))) (* x1 (+ x2 x3))) (+ (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x3 x4)))) (* x1 (+ x2 x3))))) (* (+ (cube (* (- (+ x1 x2) (- x3 x4)) x3)) (cube (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))))) (+ (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x3 x4)))) (* x1 (+ x2 x3)))))
* [enter]simplify:  Simplifying (* (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (28 enodes)
* * [misc]simplify:  iters left: 5 (81 enodes)
* * [misc]simplify:  iters left: 4 (218 enodes)
* [exit]simplify:  Simplified to (* (+ (* x1 (+ x2 x3)) (* x2 (+ (+ (- x1 x2) x3) (- x4 (* x3 x4))))) (+ (sqr (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))))))
* [exit]simplify:  Simplified to (* (+ (* x1 (+ x2 x3)) (* x2 (+ (+ (- x1 x2) x3) (- x4 (* x3 x4))))) (+ (sqr (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (- (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))))))
* * * * [misc]progress:  [ 205 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (55 enodes)
* * [misc]simplify:  iters left: 5 (152 enodes)
* * [misc]simplify:  iters left: 4 (424 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1))) (* (- (+ x1 x2) (- x3 x4)) x3)) (- (* (+ (* (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (* x3 x4) (+ x3 x4)))) (- (cube x1) (cube x2))) (* (- (cube (+ x3 x4)) (cube (* x3 x4))) (+ (sqr x1) (* x2 (+ x1 x2))))) (+ (cube x2) (* x3 (* (- x3 x2) x2)))) (* (* (* (+ (cube x2) (cube x3)) x1) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))))))) (* (* (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))) (- (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1))) (* (- (+ x1 x2) (- x3 x4)) x3))) (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (* x3 x4) (+ x3 x4)))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1))) (* (- (+ x1 x2) (- x3 x4)) x3)) (- (* (+ (* (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (* x3 x4) (+ x3 x4)))) (- (cube x1) (cube x2))) (* (- (cube (+ x3 x4)) (cube (* x3 x4))) (+ (sqr x1) (* x2 (+ x1 x2))))) (+ (cube x2) (* x3 (* (- x3 x2) x2)))) (* (* (* (+ (cube x2) (cube x3)) x1) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))))))) (* (* (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))) (- (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1))) (* (- (+ x1 x2) (- x3 x4)) x3))) (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (* x3 x4) (+ x3 x4)))))))
* [enter]simplify:  Simplifying (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (86 enodes)
* * [misc]simplify:  iters left: 4 (243 enodes)
* [exit]simplify:  Simplified to (* (- (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))) (* x3 (- (+ x1 x2) (- x3 x4)))) (* (* (+ (* x2 x2) (* (- x3 x2) x3)) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))))
* [exit]simplify:  Simplified to (* (- (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))) (* x3 (- (+ x1 x2) (- x3 x4)))) (* (* (+ (* x2 x2) (* (- x3 x2) x3)) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))))
* * * * [misc]progress:  [ 206 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (133 enodes)
* * [misc]simplify:  iters left: 4 (332 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3)) (- (* (* x2 (- x2 x3)) (+ (* (- (cube x1) (cube x2)) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (* x2 (+ x1 x2))) (- (cube (+ x3 x4)) (cube (* x3 x4)))))) (* (* (* (+ x2 x3) (* (- x2 x3) x1)) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))))) (* (* (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (- x2 x3)) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))) (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))))) (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3))))
* [exit]simplify:  Simplified to (+ (* (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3)) (- (* (* x2 (- x2 x3)) (+ (* (- (cube x1) (cube x2)) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (* x2 (+ x1 x2))) (- (cube (+ x3 x4)) (cube (* x3 x4)))))) (* (* (* (+ x2 x3) (* (- x2 x3) x1)) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))))) (* (* (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (- x2 x3)) (+ (sqr (+ x3 x4)) (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))))) (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))))) (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3))))
* [enter]simplify:  Simplifying (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (73 enodes)
* * [misc]simplify:  iters left: 4 (192 enodes)
* [exit]simplify:  Simplified to (* (- (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4)) (* x3 (- (+ x1 x2) (- x3 x4)))) (* (* (- x2 x3) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (* (+ x3 x4) (+ x3 x4)))))
* [exit]simplify:  Simplified to (* (- (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4)) (* x3 (- (+ x1 x2) (- x3 x4)))) (* (* (- x2 x3) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (* (+ x3 x4) (+ x3 x4)))))
* * * * [misc]progress:  [ 207 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (51 enodes)
* * [misc]simplify:  iters left: 5 (145 enodes)
* * [misc]simplify:  iters left: 4 (440 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (* x3 (- x3 x2)) (* x2 x2))) (* (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))) (- (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2))) (* (- (+ x1 x2) (- x3 x4)) x3)))) (* (- (* (+ (* (* (+ (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))) (+ (sqr x1) (* x2 (+ x1 x2)))) (* (- (cube x1) (cube x2)) (+ (+ x3 x4) (* x3 x4)))) (+ (cube x2) (* (* x3 (- x3 x2)) x2))) (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (cube x3) (cube x2)) x1))) (- (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2))) (* (- (+ x1 x2) (- x3 x4)) x3))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (* x3 (- x3 x2)) (* x2 x2))) (* (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))) (- (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2))) (* (- (+ x1 x2) (- x3 x4)) x3)))) (* (- (* (+ (* (* (+ (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))) (+ (sqr x1) (* x2 (+ x1 x2)))) (* (- (cube x1) (cube x2)) (+ (+ x3 x4) (* x3 x4)))) (+ (cube x2) (* (* x3 (- x3 x2)) x2))) (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (+ (cube x3) (cube x2)) x1))) (- (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2))) (* (- (+ x1 x2) (- x3 x4)) x3))))
* [enter]simplify:  Simplifying (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (29 enodes)
* * [misc]simplify:  iters left: 5 (75 enodes)
* * [misc]simplify:  iters left: 4 (211 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x4) (+ x3 x4)) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* (- x3 x2) x3) (* x2 x2))) (- (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4)) (* x3 (- (+ x1 x2) (- x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x4) (+ x3 x4)) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* (- x3 x2) x3) (* x2 x2))) (- (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4)) (* x3 (- (+ x1 x2) (- x3 x4)))))
* * * * [misc]progress:  [ 208 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (48 enodes)
* * [misc]simplify:  iters left: 5 (126 enodes)
* * [misc]simplify:  iters left: 4 (319 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3)) (- (* (* x2 (- x2 x3)) (+ (* (- (cube x1) (cube x2)) (+ (+ x3 x4) (* x3 x4))) (* (* (+ (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))) (+ (sqr x1) (* x2 (+ x1 x2)))))) (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (* (+ (+ x3 x4) (* x3 x4)) (* (- x2 x3) (+ x2 x3)))) x1))) (* (* (* (* (+ (+ x3 x4) (* x3 x4)) (- x2 x3)) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1)))))) (- (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3))))
* [exit]simplify:  Simplified to (+ (* (- (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3)) (- (* (* x2 (- x2 x3)) (+ (* (- (cube x1) (cube x2)) (+ (+ x3 x4) (* x3 x4))) (* (* (+ (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))) (+ (sqr x1) (* x2 (+ x1 x2)))))) (* (* (+ (sqr x1) (* x2 (+ x1 x2))) (* (+ (+ x3 x4) (* x3 x4)) (* (- x2 x3) (+ x2 x3)))) x1))) (* (* (* (* (+ (+ x3 x4) (* x3 x4)) (- x2 x3)) (+ (sqr x1) (* x2 (+ x1 x2)))) (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1)))))) (- (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3))))
* [enter]simplify:  Simplifying (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (61 enodes)
* * [misc]simplify:  iters left: 4 (167 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x4) (+ x3 x4)) (- x2 x3)) (+ (sqr x1) (* x2 (+ x1 x2)))) (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* x3 (- (+ x1 x2) (- x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x4) (+ x3 x4)) (- x2 x3)) (+ (sqr x1) (* x2 (+ x1 x2)))) (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* x3 (- (+ x1 x2) (- x3 x4)))))
* * * * [misc]progress:  [ 209 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (52 enodes)
* * [misc]simplify:  iters left: 5 (145 enodes)
* * [misc]simplify:  iters left: 4 (431 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3)) (- (* (* x2 (- (sqr x3) (* x2 (- x3 x2)))) (+ (* (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4))) (- (sqr x1) (* x2 x2))) (* (+ x1 x2) (- (cube (+ x3 x4)) (cube (* x3 x4)))))) (* (* (* (+ x1 x2) x1) (+ (cube x2) (cube x3))) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))))) (* (* (* (+ x1 x2) (- (sqr x3) (* x2 (- x3 x2)))) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3)) (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))))))
* [exit]simplify:  Simplified to (+ (* (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3)) (- (* (* x2 (- (sqr x3) (* x2 (- x3 x2)))) (+ (* (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4))) (- (sqr x1) (* x2 x2))) (* (+ x1 x2) (- (cube (+ x3 x4)) (cube (* x3 x4)))))) (* (* (* (+ x1 x2) x1) (+ (cube x2) (cube x3))) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))))) (* (* (* (+ x1 x2) (- (sqr x3) (* x2 (- x3 x2)))) (+ (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3)) (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))))))
* [enter]simplify:  Simplifying (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (77 enodes)
* * [misc]simplify:  iters left: 4 (231 enodes)
* [exit]simplify:  Simplified to (* (- (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))) (* x3 (- (+ x1 x2) (- x3 x4)))) (* (* (+ x1 x2) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))))))
* [exit]simplify:  Simplified to (* (- (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))) (* x3 (- (+ x1 x2) (- x3 x4)))) (* (* (+ x1 x2) (+ (* x3 (- x3 x2)) (* x2 x2))) (+ (* (+ x3 x4) (+ x3 x4)) (* (* x3 x4) (+ (* x3 x4) (+ x3 x4))))))
* * * * [misc]progress:  [ 210 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (48 enodes)
* * [misc]simplify:  iters left: 5 (124 enodes)
* * [misc]simplify:  iters left: 4 (315 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2))) (* (- (+ x1 x2) (- x3 x4)) x3)) (- (* (* x2 (- x2 x3)) (+ (* (* (+ x1 x2) (- x1 x2)) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (- (cube (+ x3 x4)) (cube (* x3 x4))) (+ x1 x2)))) (* (+ (* (* (+ x1 x2) (+ x3 x4)) (+ x3 x4)) (* (* (+ x1 x2) (* x3 x4)) (+ (+ x3 x4) (* x3 x4)))) (* (- x2 x3) (* x1 (+ x2 x3)))))) (* (* (+ (* (* (+ x1 x2) (+ x3 x4)) (+ x3 x4)) (* (* (+ x1 x2) (* x3 x4)) (+ (+ x3 x4) (* x3 x4)))) (- x2 x3)) (* (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))) (- (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2))) (* (- (+ x1 x2) (- x3 x4)) x3)))))
* [exit]simplify:  Simplified to (+ (* (- (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2))) (* (- (+ x1 x2) (- x3 x4)) x3)) (- (* (* x2 (- x2 x3)) (+ (* (* (+ x1 x2) (- x1 x2)) (+ (* (* x3 x4) (+ (+ x3 x4) (* x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (- (cube (+ x3 x4)) (cube (* x3 x4))) (+ x1 x2)))) (* (+ (* (* (+ x1 x2) (+ x3 x4)) (+ x3 x4)) (* (* (+ x1 x2) (* x3 x4)) (+ (+ x3 x4) (* x3 x4)))) (* (- x2 x3) (* x1 (+ x2 x3)))))) (* (* (+ (* (* (+ x1 x2) (+ x3 x4)) (+ x3 x4)) (* (* (+ x1 x2) (* x3 x4)) (+ (+ x3 x4) (* x3 x4)))) (- x2 x3)) (* (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))) (- (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2))) (* (- (+ x1 x2) (- x3 x4)) x3)))))
* [enter]simplify:  Simplifying (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (62 enodes)
* * [misc]simplify:  iters left: 4 (179 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* (+ x1 x2) (* (+ x3 x4) (+ x3 x4))) (* (* (+ x1 x2) (* x3 x4)) (+ (* x3 x4) (+ x3 x4)))) (- x2 x3)) (- (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))) (* x3 (- (+ x1 x2) (- x3 x4)))))
* [exit]simplify:  Simplified to (* (* (+ (* (+ x1 x2) (* (+ x3 x4) (+ x3 x4))) (* (* (+ x1 x2) (* x3 x4)) (+ (* x3 x4) (+ x3 x4)))) (- x2 x3)) (- (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))) (* x3 (- (+ x1 x2) (- x3 x4)))))
* * * * [misc]progress:  [ 211 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (48 enodes)
* * [misc]simplify:  iters left: 5 (138 enodes)
* * [misc]simplify:  iters left: 4 (410 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (* x1 x4) (+ (+ x2 (- x1)) (- x3 x4))) (* (- (+ x1 x2) (- x3 x4)) x3)) (- (* (* x2 (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (* (- (+ x3 x4) (* x3 x4)) (+ (* x3 x4) (+ x3 x4))) (+ x1 x2)) (* (- (sqr x1) (* x2 x2)) (+ (* x3 x4) (+ x3 x4))))) (* (+ (* x3 x4) (+ x3 x4)) (* (* (+ x1 x2) x1) (+ (cube x2) (cube x3)))))) (* (* (* (+ (* x3 x4) (+ x3 x4)) (+ x1 x2)) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ x2 (- x1)) (- x3 x4)))) (- (* (* x1 x4) (+ (+ x2 (- x1)) (- x3 x4))) (* (- (+ x1 x2) (- x3 x4)) x3)))))
* [exit]simplify:  Simplified to (+ (* (- (* (* x1 x4) (+ (+ x2 (- x1)) (- x3 x4))) (* (- (+ x1 x2) (- x3 x4)) x3)) (- (* (* x2 (+ (* x2 x2) (* x3 (- x3 x2)))) (+ (* (* (- (+ x3 x4) (* x3 x4)) (+ (* x3 x4) (+ x3 x4))) (+ x1 x2)) (* (- (sqr x1) (* x2 x2)) (+ (* x3 x4) (+ x3 x4))))) (* (+ (* x3 x4) (+ x3 x4)) (* (* (+ x1 x2) x1) (+ (cube x2) (cube x3)))))) (* (* (* (+ (* x3 x4) (+ x3 x4)) (+ x1 x2)) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ x2 (- x1)) (- x3 x4)))) (- (* (* x1 x4) (+ (+ x2 (- x1)) (- x3 x4))) (* (- (+ x1 x2) (- x3 x4)) x3)))))
* [enter]simplify:  Simplifying (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (66 enodes)
* * [misc]simplify:  iters left: 4 (211 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x4) (+ x3 x4)) (+ x1 x2)) (+ (* x2 x2) (* (- x3 x2) x3))) (- (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2))) (* x3 (- (+ x1 x2) (- x3 x4)))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x4) (+ x3 x4)) (+ x1 x2)) (+ (* x2 x2) (* (- x3 x2) x3))) (- (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2))) (* x3 (- (+ x1 x2) (- x3 x4)))))
* * * * [misc]progress:  [ 212 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (43 enodes)
* * [misc]simplify:  iters left: 5 (116 enodes)
* * [misc]simplify:  iters left: 4 (292 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ x1 x2) (* (+ (* x3 x4) (+ x3 x4)) (- x2 x3))) (* (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))) (- (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3)))) (* (- (* (* x2 (- x2 x3)) (+ (* (+ x1 x2) (* (- (+ x3 x4) (* x3 x4)) (+ (* x3 x4) (+ x3 x4)))) (* (+ (* x3 x4) (+ x3 x4)) (- (sqr x1) (* x2 x2))))) (* (* (+ (* x3 x4) (+ x3 x4)) (+ x1 x2)) (* (* x1 (+ x2 x3)) (- x2 x3)))) (- (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3))))
* [exit]simplify:  Simplified to (+ (* (* (+ x1 x2) (* (+ (* x3 x4) (+ x3 x4)) (- x2 x3))) (* (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))) (- (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3)))) (* (- (* (* x2 (- x2 x3)) (+ (* (+ x1 x2) (* (- (+ x3 x4) (* x3 x4)) (+ (* x3 x4) (+ x3 x4)))) (* (+ (* x3 x4) (+ x3 x4)) (- (sqr x1) (* x2 x2))))) (* (* (+ (* x3 x4) (+ x3 x4)) (+ x1 x2)) (* (* x1 (+ x2 x3)) (- x2 x3)))) (- (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3))))
* [enter]simplify:  Simplifying (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (22 enodes)
* * [misc]simplify:  iters left: 5 (50 enodes)
* * [misc]simplify:  iters left: 4 (152 enodes)
* * [misc]simplify:  iters left: 3 (339 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* x3 x4) (+ x3 x4)) (* (+ x1 x2) (- x2 x3))) (- (* (* x1 x4) (+ (- x1) (+ x2 (- x3 x4)))) (* x3 (- (+ x1 x2) (- x3 x4)))))
* [exit]simplify:  Simplified to (* (* (+ (* x3 x4) (+ x3 x4)) (* (+ x1 x2) (- x2 x3))) (- (* (* x1 x4) (+ (- x1) (+ x2 (- x3 x4)))) (* x3 (- (+ x1 x2) (- x3 x4)))))
* * * * [misc]progress:  [ 213 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (47 enodes)
* * [misc]simplify:  iters left: 5 (121 enodes)
* * [misc]simplify:  iters left: 4 (301 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))) (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3))) (* (- (sqr x3) (* x2 (- x3 x2))) (+ (sqr (- x1 x2)) (- (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))) (* (- (+ x3 x4) (* x3 x4)) (- x1 x2)))))) (* (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3)) (- (* (* x2 (- (sqr x3) (* x2 (- x3 x2)))) (+ (cube (- x1 x2)) (cube (- (+ x3 x4) (* x3 x4))))) (* (* (+ (cube x2) (cube x3)) x1) (+ (sqr (- x1 x2)) (- (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))) (* (- (+ x3 x4) (* x3 x4)) (- x1 x2))))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))) (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3))) (* (- (sqr x3) (* x2 (- x3 x2))) (+ (sqr (- x1 x2)) (- (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))) (* (- (+ x3 x4) (* x3 x4)) (- x1 x2)))))) (* (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3)) (- (* (* x2 (- (sqr x3) (* x2 (- x3 x2)))) (+ (cube (- x1 x2)) (cube (- (+ x3 x4) (* x3 x4))))) (* (* (+ (cube x2) (cube x3)) x1) (+ (sqr (- x1 x2)) (- (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))) (* (- (+ x3 x4) (* x3 x4)) (- x1 x2))))))))
* [enter]simplify:  Simplifying (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (30 enodes)
* * [misc]simplify:  iters left: 5 (69 enodes)
* * [misc]simplify:  iters left: 4 (171 enodes)
* * [misc]simplify:  iters left: 3 (361 enodes)
* [exit]simplify:  Simplified to (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (- (* (* x1 x4) (- x3 (- (- x4 x2) (- x1)))) (* x3 (+ (+ x2 x4) (- x1 x3))))))
* [exit]simplify:  Simplified to (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (- (* (* x1 x4) (- x3 (- (- x4 x2) (- x1)))) (* x3 (+ (+ x2 x4) (- x1 x3))))))
* * * * [misc]progress:  [ 214 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (- x2 x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (43 enodes)
* * [misc]simplify:  iters left: 5 (100 enodes)
* * [misc]simplify:  iters left: 4 (194 enodes)
* * [misc]simplify:  iters left: 3 (457 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (+ (+ x4 x2) (- x1 x3)) x3) (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))) (* (- (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))) (* (+ (+ x4 x2) (- x1 x3)) x3)) (+ (* (- x2 x3) (sqr (- x1 x2))) (* (* (- x2 x3) (- (+ x3 x4) (* x3 x4))) (+ (- x4 (* x3 x4)) (+ (- x3 x1) x2)))))) (* (- (* (* x2 (- x2 x3)) (+ (cube (- (+ x3 x4) (* x3 x4))) (cube (- x1 x2)))) (* (* (* x1 (+ x2 x3)) (- x2 x3)) (- (+ (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))) (sqr (- x1 x2))) (* (- (+ x3 x4) (* x3 x4)) (- x1 x2))))) (- (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))) (* (+ (+ x4 x2) (- x1 x3)) x3))))
* [exit]simplify:  Simplified to (+ (* (+ (* (+ (+ x4 x2) (- x1 x3)) x3) (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))) (* (- (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))) (* (+ (+ x4 x2) (- x1 x3)) x3)) (+ (* (- x2 x3) (sqr (- x1 x2))) (* (* (- x2 x3) (- (+ x3 x4) (* x3 x4))) (+ (- x4 (* x3 x4)) (+ (- x3 x1) x2)))))) (* (- (* (* x2 (- x2 x3)) (+ (cube (- (+ x3 x4) (* x3 x4))) (cube (- x1 x2)))) (* (* (* x1 (+ x2 x3)) (- x2 x3)) (- (+ (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))) (sqr (- x1 x2))) (* (- (+ x3 x4) (* x3 x4)) (- x1 x2))))) (- (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))) (* (+ (+ x4 x2) (- x1 x3)) x3))))
* [enter]simplify:  Simplifying (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (53 enodes)
* * [misc]simplify:  iters left: 4 (119 enodes)
* * [misc]simplify:  iters left: 3 (252 enodes)
* * [misc]simplify:  iters left: 2 (499 enodes)
* [exit]simplify:  Simplified to (* (+ (* (- x2 x3) (sqr (- x1 x2))) (* (* (- x2 x3) (- (+ x3 x4) (* x3 x4))) (- (+ x3 x4) (+ (- x1 x2) (* x3 x4))))) (- (* (* x1 x4) (- x3 (- (- x4 x2) (- x1)))) (* x3 (+ (- x1 x3) (+ x4 x2)))))
* [exit]simplify:  Simplified to (* (+ (* (- x2 x3) (sqr (- x1 x2))) (* (* (- x2 x3) (- (+ x3 x4) (* x3 x4))) (- (+ x3 x4) (+ (- x1 x2) (* x3 x4))))) (- (* (* x1 x4) (- x3 (- (- x4 x2) (- x1)))) (* x3 (+ (- x1 x3) (+ x4 x2)))))
* * * * [misc]progress:  [ 215 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (43 enodes)
* * [misc]simplify:  iters left: 5 (110 enodes)
* * [misc]simplify:  iters left: 4 (268 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))) (* (- (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1))) (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* x3 x4) (- (- x1 x2) (+ x3 x4)))))) (* (- (* x2 (* (- (sqr (- x1 x2)) (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4)))) (+ (* x2 x2) (* x3 (- x3 x2))))) (* (+ (* x3 x4) (- (- x1 x2) (+ x3 x4))) (* (+ (cube x2) (cube x3)) x1))) (- (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1))) (* (- (+ x1 x2) (- x3 x4)) x3))))
* [exit]simplify:  Simplified to (+ (* (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1)))) (* (- (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1))) (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* x3 x4) (- (- x1 x2) (+ x3 x4)))))) (* (- (* x2 (* (- (sqr (- x1 x2)) (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4)))) (+ (* x2 x2) (* x3 (- x3 x2))))) (* (+ (* x3 x4) (- (- x1 x2) (+ x3 x4))) (* (+ (cube x2) (cube x3)) x1))) (- (* (* x1 x4) (+ (+ (- x3 x4) x2) (- x1))) (* (- (+ x1 x2) (- x3 x4)) x3))))
* [enter]simplify:  Simplifying (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (63 enodes)
* * [misc]simplify:  iters left: 4 (147 enodes)
* * [misc]simplify:  iters left: 3 (317 enodes)
* [exit]simplify:  Simplified to (* (* (- (sqr x3) (* (- x3 x2) x2)) (- (- x1 (+ x4 x2)) (- x3 (* x3 x4)))) (- (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))) (* x3 (+ (+ x4 x1) (- x2 x3)))))
* [exit]simplify:  Simplified to (* (* (- (sqr x3) (* (- x3 x2) x2)) (- (- x1 (+ x4 x2)) (- x3 (* x3 x4)))) (- (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))) (* x3 (+ (+ x4 x1) (- x2 x3)))))
* * * * [misc]progress:  [ 216 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))>
* [enter]simplify:  Simplifying (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- x2 x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (38 enodes)
* * [misc]simplify:  iters left: 5 (88 enodes)
* * [misc]simplify:  iters left: 4 (182 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ x2 (- x1)) (- x3 x4)))) (* (- (* (* x1 x4) (+ (+ x2 (- x1)) (- x3 x4))) (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (- (- x1 x2) (+ x3 x4)) (* x3 x4)) (- x2 x3)))) (* (- (* (* (- x2 x3) x2) (- (sqr (- x1 x2)) (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))))) (* (+ (- (- x1 x2) (+ x3 x4)) (* x3 x4)) (* x1 (- (* x2 x2) (sqr x3))))) (- (* (* x1 x4) (+ (+ x2 (- x1)) (- x3 x4))) (* (- (+ x1 x2) (- x3 x4)) x3))))
* [exit]simplify:  Simplified to (+ (* (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (+ x2 (- x1)) (- x3 x4)))) (* (- (* (* x1 x4) (+ (+ x2 (- x1)) (- x3 x4))) (* (- (+ x1 x2) (- x3 x4)) x3)) (* (+ (- (- x1 x2) (+ x3 x4)) (* x3 x4)) (- x2 x3)))) (* (- (* (* (- x2 x3) x2) (- (sqr (- x1 x2)) (* (- (+ x3 x4) (* x3 x4)) (- (+ x3 x4) (* x3 x4))))) (* (+ (- (- x1 x2) (+ x3 x4)) (* x3 x4)) (* x1 (- (* x2 x2) (sqr x3))))) (- (* (* x1 x4) (+ (+ x2 (- x1)) (- x3 x4))) (* (- (+ x1 x2) (- x3 x4)) x3))))
* [enter]simplify:  Simplifying (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (22 enodes)
* * [misc]simplify:  iters left: 5 (47 enodes)
* * [misc]simplify:  iters left: 4 (99 enodes)
* * [misc]simplify:  iters left: 3 (208 enodes)
* * [misc]simplify:  iters left: 2 (340 enodes)
* * [misc]simplify:  iters left: 1 (483 enodes)
* [exit]simplify:  Simplified to (* (* (- x2 x3) (- (- x1 (+ x4 x2)) (- x3 (* x3 x4)))) (- (* (* x1 x4) (+ (- x1) (- (+ x2 x3) x4))) (* x3 (+ (+ x1 x4) (- x2 x3)))))
* [exit]simplify:  Simplified to (* (* (- x2 x3) (- (- x1 (+ x4 x2)) (- x3 (* x3 x4)))) (- (* (* x1 x4) (+ (- x1) (- (+ x2 x3) x4))) (* x3 (+ (+ x1 x4) (- x2 x3)))))
* * * * [misc]progress:  [ 217 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3)))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))) x4))>
* [enter]simplify:  Simplifying (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 3) (pow (* (+ x2 x3) x1) 3))))
* * [misc]simplify:  iters left: 6 (37 enodes)
* * [misc]simplify:  iters left: 5 (103 enodes)
* * [misc]simplify:  iters left: 4 (231 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (sqr (* (- (+ (- x1 x2) (+ x3 x4)) (* x3 x4)) x2)) (+ (* (* x1 (+ x2 x3)) (* x1 (+ x2 x3))) (* (- (+ (- x1 x2) (+ x3 x4)) (* x3 x4)) (* (* x1 x2) (+ x2 x3))))) (- (sqr (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (* (- (+ x1 x2) (- x3 x4)) x3)))) (* (- (cube (* (- (+ (- x1 x2) (+ x3 x4)) (* x3 x4)) x2)) (cube (* x1 (+ x2 x3)))) (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3))))
* [exit]simplify:  Simplified to (+ (* (+ (sqr (* (- (+ (- x1 x2) (+ x3 x4)) (* x3 x4)) x2)) (+ (* (* x1 (+ x2 x3)) (* x1 (+ x2 x3))) (* (- (+ (- x1 x2) (+ x3 x4)) (* x3 x4)) (* (* x1 x2) (+ x2 x3))))) (- (sqr (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))) (* (* (- (+ x1 x2) (- x3 x4)) x3) (* (- (+ x1 x2) (- x3 x4)) x3)))) (* (- (cube (* (- (+ (- x1 x2) (+ x3 x4)) (* x3 x4)) x2)) (cube (* x1 (+ x2 x3)))) (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3))))
* [enter]simplify:  Simplifying (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (+ (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (+ (sqr (* (+ x2 x3) x1)) (* (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (28 enodes)
* * [misc]simplify:  iters left: 5 (80 enodes)
* * [misc]simplify:  iters left: 4 (174 enodes)
* * [misc]simplify:  iters left: 3 (365 enodes)
* [exit]simplify:  Simplified to (* (- (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1)))) (* x3 (+ (+ x4 x2) (- x1 x3)))) (+ (+ (* (* (+ x2 x3) x1) (* (+ x2 x3) x1)) (* (+ (+ x3 (- x1 x2)) (- x4 (* x3 x4))) (* (+ x2 x3) (* x1 x2)))) (* (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x3 x4)))) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x3 x4)))))))
* [exit]simplify:  Simplified to (* (- (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1)))) (* x3 (+ (+ x4 x2) (- x1 x3)))) (+ (+ (* (* (+ x2 x3) x1) (* (+ x2 x3) x1)) (* (+ (+ x3 (- x1 x2)) (- x4 (* x3 x4))) (* (+ x2 x3) (* x1 x2)))) (* (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x3 x4)))) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x3 x4)))))))
* * * * [misc]progress:  [ 218 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1))))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* [enter]simplify:  Simplifying (+ (* (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (32 enodes)
* * [misc]simplify:  iters left: 5 (94 enodes)
* * [misc]simplify:  iters left: 4 (192 enodes)
* [exit]simplify:  Simplified to (* (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3)) (+ (* (- (* (+ (+ (- x1 x2) x3) (- x4 (* x3 x4))) x2) (* (+ x2 x3) x1)) (+ (* (+ x2 x3) x1) (* (+ (+ (- x1 x2) x3) (- x4 (* x3 x4))) x2))) (* (+ (* (+ x2 x3) x1) (* (+ (+ (- x1 x2) x3) (- x4 (* x3 x4))) x2)) (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))))))
* [exit]simplify:  Simplified to (* (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* (- (+ x1 x2) (- x3 x4)) x3)) (+ (* (- (* (+ (+ (- x1 x2) x3) (- x4 (* x3 x4))) x2) (* (+ x2 x3) x1)) (+ (* (+ x2 x3) x1) (* (+ (+ (- x1 x2) x3) (- x4 (* x3 x4))) x2))) (* (+ (* (+ x2 x3) x1) (* (+ (+ (- x1 x2) x3) (- x4 (* x3 x4))) x2)) (+ (* (- (+ x1 x2) (- x3 x4)) x3) (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))))))
* [enter]simplify:  Simplifying (* (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (24 enodes)
* * [misc]simplify:  iters left: 5 (64 enodes)
* * [misc]simplify:  iters left: 4 (137 enodes)
* * [misc]simplify:  iters left: 3 (273 enodes)
* * [misc]simplify:  iters left: 2 (496 enodes)
* [exit]simplify:  Simplified to (* (+ (* x2 (+ (- (+ x1 x4) x2) (- x3 (* x3 x4)))) (* x1 (+ x2 x3))) (- (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))) (* x3 (+ (+ x4 x2) (- x1 x3)))))
* [exit]simplify:  Simplified to (* (+ (* x2 (+ (- (+ x1 x4) x2) (- x3 (* x3 x4)))) (* x1 (+ x2 x3))) (- (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))) (* x3 (+ (+ x4 x2) (- x1 x3)))))
* * * * [misc]progress:  [ 219 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (pow (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) 3) (pow (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)) 3)) (+ (sqr (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3))) (- (sqr (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))) x4))>
* [enter]simplify:  Simplifying (+ (pow (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) 3) (pow (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)) 3))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (63 enodes)
* * [misc]simplify:  iters left: 4 (122 enodes)
* * [misc]simplify:  iters left: 3 (220 enodes)
* * [misc]simplify:  iters left: 2 (407 enodes)
* [exit]simplify:  Simplified to (+ (cube (- (* (+ (- (+ x1 x4) x2) (- x3 (* x3 x4))) x2) (* (+ x2 x3) x1))) (cube (+ (* x3 (+ (- x2 x3) (+ x1 x4))) (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2)))))
* [exit]simplify:  Simplified to (+ (cube (- (* (+ (- (+ x1 x4) x2) (- x3 (* x3 x4))) x2) (* (+ x2 x3) x1))) (cube (+ (* x3 (+ (- x2 x3) (+ x1 x4))) (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2)))))
* [enter]simplify:  Simplifying (+ (sqr (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3))) (- (sqr (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (28 enodes)
* * [misc]simplify:  iters left: 5 (67 enodes)
* * [misc]simplify:  iters left: 4 (143 enodes)
* * [misc]simplify:  iters left: 3 (327 enodes)
* [exit]simplify:  Simplified to (- (+ (sqr (- (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (* (+ x2 x3) x1))) (* (+ (* x3 (+ (+ x4 x1) (- x2 x3))) (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))) (+ (* x3 (+ (+ x4 x1) (- x2 x3))) (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))))) (* (- (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (* (+ x2 x3) x1)) (+ (* x3 (+ (+ x4 x1) (- x2 x3))) (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))))))
* [exit]simplify:  Simplified to (- (+ (sqr (- (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (* (+ x2 x3) x1))) (* (+ (* x3 (+ (+ x4 x1) (- x2 x3))) (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))) (+ (* x3 (+ (+ x4 x1) (- x2 x3))) (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))))) (* (- (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))) (* (+ x2 x3) x1)) (+ (* x3 (+ (+ x4 x1) (- x2 x3))) (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))))))
* * * * [misc]progress:  [ 220 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (* 1 (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* * * * [misc]progress:  [ 221 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (- (sqr (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3))) (sqr (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) (- (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* [enter]simplify:  Simplifying (- (sqr (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3))) (sqr (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))))
* * [misc]simplify:  iters left: 6 (26 enodes)
* * [misc]simplify:  iters left: 5 (64 enodes)
* * [misc]simplify:  iters left: 4 (140 enodes)
* * [misc]simplify:  iters left: 3 (329 enodes)
* [exit]simplify:  Simplified to (- (* (+ (* x3 (+ (+ x2 x4) (- x1 x3))) (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))) (+ (* x3 (+ (+ x2 x4) (- x1 x3))) (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2)))) (sqr (- (* x2 (+ (+ (- x1 x2) x4) (- x3 (* x3 x4)))) (* (+ x2 x3) x1))))
* [exit]simplify:  Simplified to (- (* (+ (* x3 (+ (+ x2 x4) (- x1 x3))) (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))) (+ (* x3 (+ (+ x2 x4) (- x1 x3))) (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2)))) (sqr (- (* x2 (+ (+ (- x1 x2) x4) (- x3 (* x3 x4)))) (* (+ x2 x3) x1))))
* [enter]simplify:  Simplifying (- (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (24 enodes)
* * [misc]simplify:  iters left: 5 (61 enodes)
* * [misc]simplify:  iters left: 4 (123 enodes)
* * [misc]simplify:  iters left: 3 (222 enodes)
* * [misc]simplify:  iters left: 2 (351 enodes)
* * [misc]simplify:  iters left: 1 (468 enodes)
* [exit]simplify:  Simplified to (- (+ (* x3 (+ (- x1 x3) (+ x4 x2))) (* (* x1 x4) (+ (- x1) (+ (- x2 x4) x3)))) (- (* x2 (+ (+ (- x1 x2) x4) (- x3 (* x3 x4)))) (* x1 (+ x2 x3))))
* [exit]simplify:  Simplified to (- (+ (* x3 (+ (- x1 x3) (+ x4 x2))) (* (* x1 x4) (+ (- x1) (+ (- x2 x4) x3)))) (- (* x2 (+ (+ (- x1 x2) x4) (- x3 (* x3 x4)))) (* x1 (+ x2 x3))))
* * * * [misc]progress:  [ 222 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (* 1 (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* [enter]simplify:  Simplifying (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (24 enodes)
* * [misc]simplify:  iters left: 5 (61 enodes)
* * [misc]simplify:  iters left: 4 (124 enodes)
* * [misc]simplify:  iters left: 3 (236 enodes)
* * [misc]simplify:  iters left: 2 (436 enodes)
* [exit]simplify:  Simplified to (+ (+ (* x3 (+ (- x1 x3) (+ x4 x2))) (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* x1 (+ x2 x3))))
* [exit]simplify:  Simplified to (+ (+ (* x3 (+ (- x1 x3) (+ x4 x2))) (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* x1 (+ x2 x3))))
* * * * [misc]progress:  [ 223 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (- (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))))
* * [misc]simplify:  iters left: 6 (21 enodes)
* * [misc]simplify:  iters left: 5 (54 enodes)
* * [misc]simplify:  iters left: 4 (104 enodes)
* * [misc]simplify:  iters left: 3 (185 enodes)
* * [misc]simplify:  iters left: 2 (287 enodes)
* * [misc]simplify:  iters left: 1 (367 enodes)
* [exit]simplify:  Simplified to (+ (+ (* x3 (+ (- x1 x3) (+ x4 x2))) (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))) (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))))
* [exit]simplify:  Simplified to (+ (+ (* x3 (+ (- x1 x3) (+ x4 x2))) (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))) (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))))
* * * * [misc]progress:  [ 224 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* x2 (- x1 x2))) (- (* x2 (- (+ x3 x4) (* x3 x4))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* x2 (- x1 x2)))
* * [misc]simplify:  iters left: 6 (17 enodes)
* * [misc]simplify:  iters left: 5 (35 enodes)
* * [misc]simplify:  iters left: 4 (70 enodes)
* * [misc]simplify:  iters left: 3 (129 enodes)
* * [misc]simplify:  iters left: 2 (206 enodes)
* * [misc]simplify:  iters left: 1 (255 enodes)
* [exit]simplify:  Simplified to (+ (+ (* x3 (- (+ x1 x4) (- x3 x2))) (* (- x1 x2) x2)) (* (* x1 x4) (+ (- (+ x2 x3) x4) (- x1))))
* [exit]simplify:  Simplified to (+ (+ (* x3 (- (+ x1 x4) (- x3 x2))) (* (- x1 x2) x2)) (* (* x1 x4) (+ (- (+ x2 x3) x4) (- x1))))
* * * * [misc]progress:  [ 225 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (- x1 x2) x2)) (- (* (- (+ x3 x4) (* x3 x4)) x2) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* (- x1 x2) x2))
* * [misc]simplify:  iters left: 6 (17 enodes)
* * [misc]simplify:  iters left: 5 (35 enodes)
* * [misc]simplify:  iters left: 4 (70 enodes)
* * [misc]simplify:  iters left: 3 (129 enodes)
* * [misc]simplify:  iters left: 2 (206 enodes)
* * [misc]simplify:  iters left: 1 (255 enodes)
* [exit]simplify:  Simplified to (+ (+ (* x3 (- (+ x1 x4) (- x3 x2))) (* (- x1 x2) x2)) (* (* x1 x4) (+ (- (+ x2 x3) x4) (- x1))))
* [exit]simplify:  Simplified to (+ (+ (* x3 (- (+ x1 x4) (- x3 x2))) (* (- x1 x2) x2)) (* (* x1 x4) (+ (- (+ x2 x3) x4) (- x1))))
* * * * [misc]progress:  [ 226 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (+ (* (- (+ x2 x1) (- x3 x4)) x3) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))>
* [enter]simplify:  Simplifying (+ (* (- (+ x2 x1) (- x3 x4)) x3) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (18 enodes)
* * [misc]simplify:  iters left: 5 (45 enodes)
* * [misc]simplify:  iters left: 4 (90 enodes)
* * [misc]simplify:  iters left: 3 (160 enodes)
* * [misc]simplify:  iters left: 2 (240 enodes)
* * [misc]simplify:  iters left: 1 (334 enodes)
* [exit]simplify:  Simplified to (- (* x2 (- (- x1 (* x3 x4)) (- (- x2 x3) x4))) (- (* (+ x2 x3) x1) (* x3 (+ (- x2 x3) (+ x1 x4)))))
* [exit]simplify:  Simplified to (- (* x2 (- (- x1 (* x3 x4)) (- (- x2 x3) x4))) (- (* (+ x2 x3) x1) (* x3 (+ (- x2 x3) (+ x1 x4)))))
* * * * [misc]progress:  [ 227 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ x2 x3) x1)) x4))>
* [enter]simplify:  Simplifying (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))))
* * [misc]simplify:  iters left: 6 (21 enodes)
* * [misc]simplify:  iters left: 5 (54 enodes)
* * [misc]simplify:  iters left: 4 (104 enodes)
* * [misc]simplify:  iters left: 3 (185 enodes)
* * [misc]simplify:  iters left: 2 (287 enodes)
* * [misc]simplify:  iters left: 1 (367 enodes)
* [exit]simplify:  Simplified to (+ (+ (* x3 (+ (- x1 x3) (+ x4 x2))) (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))) (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))))
* [exit]simplify:  Simplified to (+ (+ (* x3 (+ (- x1 x3) (+ x4 x2))) (* (* x1 x4) (- (+ x3 (- x1)) (- x4 x2)))) (* x2 (- (+ x3 x4) (- (* x3 x4) (- x1 x2)))))
* * * * [misc]progress:  [ 228 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)) (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3))) x4))>
* * * * [misc]progress:  [ 229 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (log (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3)))
* * [misc]simplify:  iters left: 6 (16 enodes)
* * [misc]simplify:  iters left: 5 (37 enodes)
* * [misc]simplify:  iters left: 4 (84 enodes)
* * [misc]simplify:  iters left: 3 (180 enodes)
* * [misc]simplify:  iters left: 2 (323 enodes)
* * [misc]simplify:  iters left: 1 (439 enodes)
* [exit]simplify:  Simplified to (* (pow (/ (exp (- x3 x1)) (exp (- x4 x2))) (* x1 x4)) (pow (exp x3) (- (+ x1 x4) (- x3 x2))))
* [exit]simplify:  Simplified to (* (pow (/ (exp (- x3 x1)) (exp (- x4 x2))) (* x1 x4)) (pow (exp x3) (- (+ x1 x4) (- x3 x2))))
* * * * [misc]progress:  [ 230 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (pow (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) 1) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* * * * [misc]progress:  [ 231 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (exp (log (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (log (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))
* * [misc]simplify:  iters left: 6 (15 enodes)
* * [misc]simplify:  iters left: 5 (30 enodes)
* * [misc]simplify:  iters left: 4 (62 enodes)
* * [misc]simplify:  iters left: 3 (117 enodes)
* * [misc]simplify:  iters left: 2 (192 enodes)
* * [misc]simplify:  iters left: 1 (241 enodes)
* [exit]simplify:  Simplified to (log (+ (* x3 (- (+ x4 x2) (- x3 x1))) (* (* x1 x4) (- x3 (- (- x4 x2) (- x1))))))
* [exit]simplify:  Simplified to (log (+ (* x3 (- (+ x4 x2) (- x3 x1))) (* (* x1 x4) (- x3 (- (- x4 x2) (- x1))))))
* * * * [misc]progress:  [ 232 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (log (exp (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (exp (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))
* * [misc]simplify:  iters left: 6 (15 enodes)
* * [misc]simplify:  iters left: 5 (33 enodes)
* * [misc]simplify:  iters left: 4 (74 enodes)
* * [misc]simplify:  iters left: 3 (165 enodes)
* * [misc]simplify:  iters left: 2 (319 enodes)
* * [misc]simplify:  iters left: 1 (498 enodes)
* [exit]simplify:  Simplified to (exp (+ (* x3 (- (+ x4 x2) (- x3 x1))) (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))))
* [exit]simplify:  Simplified to (exp (+ (* x3 (- (+ x4 x2) (- x3 x1))) (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))))
* * * * [misc]progress:  [ 233 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (cube (cbrt (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (cbrt (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))
* * [misc]simplify:  iters left: 6 (15 enodes)
* * [misc]simplify:  iters left: 5 (30 enodes)
* * [misc]simplify:  iters left: 4 (62 enodes)
* * [misc]simplify:  iters left: 3 (117 enodes)
* * [misc]simplify:  iters left: 2 (192 enodes)
* * [misc]simplify:  iters left: 1 (241 enodes)
* [exit]simplify:  Simplified to (cbrt (+ (* x3 (- (+ x4 x2) (- x3 x1))) (* (* x1 x4) (- x3 (- (- x4 x2) (- x1))))))
* [exit]simplify:  Simplified to (cbrt (+ (* x3 (- (+ x4 x2) (- x3 x1))) (* (* x1 x4) (- x3 (- (- x4 x2) (- x1))))))
* * * * [misc]progress:  [ 234 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (cbrt (cube (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (cube (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))
* * [misc]simplify:  iters left: 6 (15 enodes)
* * [misc]simplify:  iters left: 5 (32 enodes)
* * [misc]simplify:  iters left: 4 (74 enodes)
* * [misc]simplify:  iters left: 3 (193 enodes)
* [exit]simplify:  Simplified to (cube (+ (* x3 (+ (+ x4 x1) (- x2 x3))) (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))))
* [exit]simplify:  Simplified to (cube (+ (* x3 (+ (+ x4 x1) (- x2 x3))) (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))))
* * * * [misc]progress:  [ 235 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (sqr (sqrt (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (sqrt (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)))
* * [misc]simplify:  iters left: 6 (15 enodes)
* * [misc]simplify:  iters left: 5 (30 enodes)
* * [misc]simplify:  iters left: 4 (62 enodes)
* * [misc]simplify:  iters left: 3 (117 enodes)
* * [misc]simplify:  iters left: 2 (192 enodes)
* * [misc]simplify:  iters left: 1 (241 enodes)
* [exit]simplify:  Simplified to (sqrt (+ (* x3 (- (+ x4 x2) (- x3 x1))) (* (* x1 x4) (- x3 (- (- x4 x2) (- x1))))))
* [exit]simplify:  Simplified to (sqrt (+ (* x3 (- (+ x4 x2) (- x3 x1))) (* (* x1 x4) (- x3 (- (- x4 x2) (- x1))))))
* * * * [misc]progress:  [ 236 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (/ (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3)))
* * [misc]simplify:  iters left: 6 (40 enodes)
* * [misc]simplify:  iters left: 5 (97 enodes)
* * [misc]simplify:  iters left: 4 (241 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) x3) (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (- (sqr x1) (* x2 (- x1 x2))) (- (cube x3) (cube x4))))) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2)))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) x3) (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (- (sqr x1) (* x2 (- x1 x2))) (- (cube x3) (cube x4))))) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2)))))))
* [enter]simplify:  Simplifying (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (58 enodes)
* * [misc]simplify:  iters left: 4 (140 enodes)
* * [misc]simplify:  iters left: 3 (335 enodes)
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ (* x2 x2) (* (- x1 x2) x1)) (+ (* x3 x3) (* (+ x3 x4) x4))))
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ (* x2 x2) (* (- x1 x2) x1)) (+ (* x3 x3) (* (+ x3 x4) x4))))
* * * * [misc]progress:  [ 237 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (/ (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4)))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3)))
* * [misc]simplify:  iters left: 6 (36 enodes)
* * [misc]simplify:  iters left: 5 (89 enodes)
* * [misc]simplify:  iters left: 4 (200 enodes)
* * [misc]simplify:  iters left: 3 (480 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 x2) (* (- x1 x2) x1)) (* (* x1 x4) (+ x4 x3))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (* x3 (- (sqr (+ (- x3 x4) (- x1))) (* (+ (- x3 x4) (- (- x1) x2)) x2))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* (- x1 x2) x1))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (* x2 x2) (* (- x1 x2) x1)) (* (* x1 x4) (+ x4 x3))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (* x3 (- (sqr (+ (- x3 x4) (- x1))) (* (+ (- x3 x4) (- (- x1) x2)) x2))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* (- x1 x2) x1))))))
* [enter]simplify:  Simplifying (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4)))
* * [misc]simplify:  iters left: 6 (19 enodes)
* * [misc]simplify:  iters left: 5 (49 enodes)
* * [misc]simplify:  iters left: 4 (120 enodes)
* * [misc]simplify:  iters left: 3 (266 enodes)
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (* (+ x3 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))
* * * * [misc]progress:  [ 238 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (/ (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3)))
* * [misc]simplify:  iters left: 6 (37 enodes)
* * [misc]simplify:  iters left: 5 (90 enodes)
* * [misc]simplify:  iters left: 4 (176 enodes)
* * [misc]simplify:  iters left: 3 (427 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x1) x3) (- (* (+ x2 x1) (+ (* x3 (+ x4 x3)) (* x4 x4))) (- (cube x3) (cube x4)))) (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* (* x1 x4) (- x2 x1)) (+ (* x3 (+ x4 x3)) (* x4 x4)))))
* [exit]simplify:  Simplified to (+ (* (* (* (- x2 x1) x3) (- (* (+ x2 x1) (+ (* x3 (+ x4 x3)) (* x4 x4))) (- (cube x3) (cube x4)))) (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))))) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* (* x1 x4) (- x2 x1)) (+ (* x3 (+ x4 x3)) (* x4 x4)))))
* [enter]simplify:  Simplifying (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))))
* * [misc]simplify:  iters left: 6 (20 enodes)
* * [misc]simplify:  iters left: 5 (50 enodes)
* * [misc]simplify:  iters left: 4 (110 enodes)
* * [misc]simplify:  iters left: 3 (248 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* x3 (+ x3 x4)) (* x4 x4)) (- x2 x1)) (+ (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* (+ (- x3 x4) (- x1)) x2)) (* x2 x2)))
* [exit]simplify:  Simplified to (* (* (+ (* x3 (+ x3 x4)) (* x4 x4)) (- x2 x1)) (+ (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* (+ (- x3 x4) (- x1)) x2)) (* x2 x2)))
* * * * [misc]progress:  [ 239 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (/ (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4)))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3)))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (82 enodes)
* * [misc]simplify:  iters left: 4 (136 enodes)
* * [misc]simplify:  iters left: 3 (345 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* x3 (* (* (- x2 x1) (+ x4 x3)) (- (+ x2 x1) (- x3 x4))))) (* (* (* x1 x4) (* (- x2 x1) (+ x4 x3))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))
* [exit]simplify:  Simplified to (+ (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* x3 (* (* (- x2 x1) (+ x4 x3)) (- (+ x2 x1) (- x3 x4))))) (* (* (* x1 x4) (* (- x2 x1) (+ x4 x3))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))
* [enter]simplify:  Simplifying (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- x2 x1) (+ x3 x4)))
* * [misc]simplify:  iters left: 6 (16 enodes)
* * [misc]simplify:  iters left: 5 (41 enodes)
* * [misc]simplify:  iters left: 4 (68 enodes)
* * [misc]simplify:  iters left: 3 (149 enodes)
* * [misc]simplify:  iters left: 2 (310 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ x3 x4) (- x2 x1)) (+ (- x3 x4) (- x1))) (- x3 (- (+ x2 x4) (- x1)))) (* (+ x3 x4) (* (- x2 x1) (* x2 x2))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ x3 x4) (- x2 x1)) (+ (- x3 x4) (- x1))) (- x3 (- (+ x2 x4) (- x1)))) (* (+ x3 x4) (* (- x2 x1) (* x2 x2))))
* * * * [misc]progress:  [ 240 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (/ (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4)))))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3)))
* * [misc]simplify:  iters left: 6 (31 enodes)
* * [misc]simplify:  iters left: 5 (72 enodes)
* * [misc]simplify:  iters left: 4 (155 enodes)
* * [misc]simplify:  iters left: 3 (445 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (* (* x1 x4) (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4)))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))
* [exit]simplify:  Simplified to (+ (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* x3 (- (cube (+ x2 x1)) (cube (- x3 x4))))) (* (* (* x1 x4) (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (+ x2 x1) (- x3 x4)) (- x3 x4)))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))
* [enter]simplify:  Simplifying (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4)))))
* * [misc]simplify:  iters left: 6 (19 enodes)
* * [misc]simplify:  iters left: 5 (48 enodes)
* * [misc]simplify:  iters left: 4 (131 enodes)
* * [misc]simplify:  iters left: 3 (378 enodes)
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (- x3 x4) (+ x2 x1)) (- x3 x4))))
* [exit]simplify:  Simplified to (* (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)) (+ (* (+ x2 x1) (+ x2 x1)) (* (+ (- x3 x4) (+ x2 x1)) (- x3 x4))))
* * * * [misc]progress:  [ 241 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (/ (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4)))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (68 enodes)
* * [misc]simplify:  iters left: 4 (155 enodes)
* * [misc]simplify:  iters left: 3 (451 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* (* (- (+ x2 x1) (- x3 x4)) x3) (+ (+ x2 x1) (- x3 x4)))) (* (* x1 (* (+ (+ x2 x1) (- x3 x4)) x4)) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))
* [exit]simplify:  Simplified to (+ (* (+ (* x2 x2) (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1))))) (* (* (- (+ x2 x1) (- x3 x4)) x3) (+ (+ x2 x1) (- x3 x4)))) (* (* x1 (* (+ (+ x2 x1) (- x3 x4)) x4)) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))
* [enter]simplify:  Simplifying (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (+ (+ x2 x1) (- x3 x4)))
* * [misc]simplify:  iters left: 6 (15 enodes)
* * [misc]simplify:  iters left: 5 (42 enodes)
* * [misc]simplify:  iters left: 4 (108 enodes)
* * [misc]simplify:  iters left: 3 (250 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (- x3 x4) (+ x2 x1)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2))) (* (+ (- x3 x4) (+ x2 x1)) (* x2 x2)))
* [exit]simplify:  Simplified to (+ (* (* (+ (- x3 x4) (+ x2 x1)) (+ (- x3 x4) (- x1))) (+ (- x3 x4) (- (- x1) x2))) (* (+ (- x3 x4) (+ x2 x1)) (* x2 x2)))
* * * * [misc]progress:  [ 242 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (/ (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3)))
* * [misc]simplify:  iters left: 6 (37 enodes)
* * [misc]simplify:  iters left: 5 (86 enodes)
* * [misc]simplify:  iters left: 4 (229 enodes)
* [exit]simplify:  Simplified to (+ (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (* x1 x4) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))))))
* [exit]simplify:  Simplified to (+ (* (* x3 (+ (- x2 x3) (- x4 (- x1)))) (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (* x1 x4) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))))))
* [enter]simplify:  Simplifying (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))))
* * [misc]simplify:  iters left: 6 (20 enodes)
* * [misc]simplify:  iters left: 5 (46 enodes)
* * [misc]simplify:  iters left: 4 (124 enodes)
* * [misc]simplify:  iters left: 3 (328 enodes)
* [exit]simplify:  Simplified to (* (* (- (sqr x1) (* (- x1 x2) x2)) (+ (- x2 x3) (- x4 (- x1)))) (+ (* x3 (+ x3 x4)) (* x4 x4)))
* [exit]simplify:  Simplified to (* (* (- (sqr x1) (* (- x1 x2) x2)) (+ (- x2 x3) (- x4 (- x1)))) (+ (* x3 (+ x3 x4)) (* x4 x4)))
* * * * [misc]progress:  [ 243 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (/ (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4)))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3)))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (78 enodes)
* * [misc]simplify:  iters left: 4 (193 enodes)
* * [misc]simplify:  iters left: 3 (451 enodes)
* [exit]simplify:  Simplified to (+ (* (* x3 (+ (- (- x2 x3) (- x1)) x4)) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (- (* x1 x1) (* (- x1 x2) x2)) (- (* x3 x3) (* x4 x4))))) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (* (* x1 x4) (+ x3 x4)) (- (* x1 x1) (* (- x1 x2) x2)))))
* [exit]simplify:  Simplified to (+ (* (* x3 (+ (- (- x2 x3) (- x1)) x4)) (- (* (+ x3 x4) (+ (cube x2) (cube x1))) (* (- (* x1 x1) (* (- x1 x2) x2)) (- (* x3 x3) (* x4 x4))))) (* (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (* (* x1 x4) (+ x3 x4)) (- (* x1 x1) (* (- x1 x2) x2)))))
* [enter]simplify:  Simplifying (* (- x2 (+ (- x1) (- x3 x4))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4)))
* * [misc]simplify:  iters left: 6 (16 enodes)
* * [misc]simplify:  iters left: 5 (37 enodes)
* * [misc]simplify:  iters left: 4 (82 enodes)
* * [misc]simplify:  iters left: 3 (182 enodes)
* [exit]simplify:  Simplified to (* (* (+ x3 x4) (- (+ (- x2 x3) x4) (- x1))) (+ (* (- x1 x2) x1) (* x2 x2)))
* [exit]simplify:  Simplified to (* (* (+ x3 x4) (- (+ (- x2 x3) x4) (- x1))) (+ (* (- x1 x2) x1) (* x2 x2)))
* * * * [misc]progress:  [ 244 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (/ (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (- x2 x1) (- (pow x3 3) (pow x4 3)))) x3)))
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (77 enodes)
* * [misc]simplify:  iters left: 4 (165 enodes)
* * [misc]simplify:  iters left: 3 (414 enodes)
* [exit]simplify:  Simplified to (+ (* (* x3 (+ (- (- x2 x3) (- x1)) x4)) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* x3 x3) (* (+ x3 x4) x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (* (* x1 x4) (- x2 x1)) (+ (* x3 x3) (* (+ x3 x4) x4))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))))
* [exit]simplify:  Simplified to (+ (* (* x3 (+ (- (- x2 x3) (- x1)) x4)) (- (* (* (+ x2 x1) (- x2 x1)) (+ (* x3 x3) (* (+ x3 x4) x4))) (* (- x2 x1) (- (cube x3) (cube x4))))) (* (* (* (* x1 x4) (- x2 x1)) (+ (* x3 x3) (* (+ x3 x4) x4))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))))
* [enter]simplify:  Simplifying (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))))
* * [misc]simplify:  iters left: 6 (16 enodes)
* * [misc]simplify:  iters left: 5 (36 enodes)
* * [misc]simplify:  iters left: 4 (65 enodes)
* * [misc]simplify:  iters left: 3 (96 enodes)
* * [misc]simplify:  iters left: 2 (178 enodes)
* * [misc]simplify:  iters left: 1 (364 enodes)
* [exit]simplify:  Simplified to (* (* (- x2 x1) (+ x4 (- (- x2 x3) (- x1)))) (+ (* x4 (+ x3 x4)) (sqr x3)))
* [exit]simplify:  Simplified to (* (* (- x2 x1) (+ x4 (- (- x2 x3) (- x1)))) (+ (* x4 (+ x3 x4)) (sqr x3)))
* * * * [misc]progress:  [ 245 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (/ (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4)))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (* (- x2 x1) (+ x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (* (- (sqr x2) (sqr x1)) (+ x3 x4)) (* (- x2 x1) (- (sqr x3) (sqr x4)))) x3)))
* * [misc]simplify:  iters left: 6 (28 enodes)
* * [misc]simplify:  iters left: 5 (68 enodes)
* * [misc]simplify:  iters left: 4 (115 enodes)
* * [misc]simplify:  iters left: 3 (294 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (* x1 x4) (- x2 x1)) (+ x3 x4)) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (* (* (* (+ x3 x4) (- x2 x1)) (- (+ x2 x1) (- x3 x4))) (- x2 (+ (- x3 x4) (- x1)))) x3))
* [exit]simplify:  Simplified to (+ (* (* (* (* x1 x4) (- x2 x1)) (+ x3 x4)) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* (* (* (* (+ x3 x4) (- x2 x1)) (- (+ x2 x1) (- x3 x4))) (- x2 (+ (- x3 x4) (- x1)))) x3))
* [enter]simplify:  Simplifying (* (- x2 (+ (- x1) (- x3 x4))) (* (- x2 x1) (+ x3 x4)))
* * [misc]simplify:  iters left: 6 (12 enodes)
* * [misc]simplify:  iters left: 5 (27 enodes)
* * [misc]simplify:  iters left: 4 (35 enodes)
* * [misc]simplify:  iters left: 3 (61 enodes)
* * [misc]simplify:  iters left: 2 (150 enodes)
* * [misc]simplify:  iters left: 1 (364 enodes)
* [exit]simplify:  Simplified to (* (* (- x2 x1) (+ x3 x4)) (+ (- (- x2 x3) (- x1)) x4))
* [exit]simplify:  Simplified to (* (* (- x2 x1) (+ x3 x4)) (+ (- (- x2 x3) (- x1)) x4))
* * * * [misc]progress:  [ 246 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (/ (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3))) (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4)))))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4))))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (pow (+ x2 x1) 3) (pow (- x3 x4) 3)) x3)))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (59 enodes)
* * [misc]simplify:  iters left: 4 (133 enodes)
* * [misc]simplify:  iters left: 3 (345 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* x1 x4) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1))))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x3 (* (- (cube (+ x2 x1)) (cube (- x3 x4))) (+ (- (- x2 x3) (- x1)) x4))))
* [exit]simplify:  Simplified to (+ (* (* (* x1 x4) (+ (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (+ (- x3 x4) (+ x2 x1))))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))) (* x3 (* (- (cube (+ x2 x1)) (cube (- x3 x4))) (+ (- (- x2 x3) (- x1)) x4))))
* [enter]simplify:  Simplifying (* (- x2 (+ (- x1) (- x3 x4))) (+ (sqr (+ x2 x1)) (+ (sqr (- x3 x4)) (* (+ x2 x1) (- x3 x4)))))
* * [misc]simplify:  iters left: 6 (15 enodes)
* * [misc]simplify:  iters left: 5 (34 enodes)
* * [misc]simplify:  iters left: 4 (76 enodes)
* * [misc]simplify:  iters left: 3 (189 enodes)
* * [misc]simplify:  iters left: 2 (455 enodes)
* [exit]simplify:  Simplified to (* (+ (* (- x3 x4) (+ (- x3 x4) (+ x1 x2))) (sqr (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4))))
* [exit]simplify:  Simplified to (* (+ (* (- x3 x4) (+ (- x3 x4) (+ x1 x2))) (sqr (+ x1 x2))) (- x2 (+ (- x1) (- x3 x4))))
* * * * [misc]progress:  [ 247 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (/ (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3))) (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4)))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (+ (* (* (- (sqr x2) (sqr (+ (- x1) (- x3 x4)))) (* x4 x1)) (+ (+ x2 x1) (- x3 x4))) (* (- x2 (+ (- x1) (- x3 x4))) (* (- (sqr (+ x2 x1)) (sqr (- x3 x4))) x3)))
* * [misc]simplify:  iters left: 6 (22 enodes)
* * [misc]simplify:  iters left: 5 (54 enodes)
* * [misc]simplify:  iters left: 4 (126 enodes)
* * [misc]simplify:  iters left: 3 (355 enodes)
* [exit]simplify:  Simplified to (+ (* (- (- x2 (- x1)) (- x3 x4)) (* x3 (- (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (- x3 x4))))) (* (* (* x1 x4) (+ (- x3 x4) (+ x2 x1))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))))
* [exit]simplify:  Simplified to (+ (* (- (- x2 (- x1)) (- x3 x4)) (* x3 (- (* (+ x2 x1) (+ x2 x1)) (* (- x3 x4) (- x3 x4))))) (* (* (* x1 x4) (+ (- x3 x4) (+ x2 x1))) (- (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))))))
* [enter]simplify:  Simplifying (* (- x2 (+ (- x1) (- x3 x4))) (+ (+ x2 x1) (- x3 x4)))
* * [misc]simplify:  iters left: 6 (11 enodes)
* * [misc]simplify:  iters left: 5 (28 enodes)
* * [misc]simplify:  iters left: 4 (51 enodes)
* * [misc]simplify:  iters left: 3 (78 enodes)
* * [misc]simplify:  iters left: 2 (174 enodes)
* * [misc]simplify:  iters left: 1 (378 enodes)
* [exit]simplify:  Simplified to (* (+ (- x3 x4) (+ x1 x2)) (+ x4 (- (- x2 x3) (- x1))))
* [exit]simplify:  Simplified to (* (+ (- x3 x4) (+ x1 x2)) (+ x4 (- (- x2 x3) (- x1))))
* * * * [misc]progress:  [ 248 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (/ (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3)) (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3))))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (+ (pow (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) 3) (pow (* (- (+ x2 x1) (- x3 x4)) x3) 3))
* * [misc]simplify:  iters left: 6 (17 enodes)
* * [misc]simplify:  iters left: 5 (34 enodes)
* * [misc]simplify:  iters left: 4 (80 enodes)
* * [misc]simplify:  iters left: 3 (181 enodes)
* * [misc]simplify:  iters left: 2 (438 enodes)
* [exit]simplify:  Simplified to (+ (cube (* (+ (- x1 x3) (+ x4 x2)) x3)) (cube (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))))
* [exit]simplify:  Simplified to (+ (cube (* (+ (- x1 x3) (+ x4 x2)) x3)) (cube (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1))))))
* [enter]simplify:  Simplifying (+ (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (sqr (* (- (+ x2 x1) (- x3 x4)) x3)) (* (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3))))
* * [misc]simplify:  iters left: 6 (18 enodes)
* * [misc]simplify:  iters left: 5 (45 enodes)
* * [misc]simplify:  iters left: 4 (111 enodes)
* * [misc]simplify:  iters left: 3 (310 enodes)
* [exit]simplify:  Simplified to (+ (sqr (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))) (* (* (+ (+ x2 x4) (- x1 x3)) x3) (- (* (+ (+ x2 x4) (- x1 x3)) x3) (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))))))
* [exit]simplify:  Simplified to (+ (sqr (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1)))) (* (* (+ (+ x2 x4) (- x1 x3)) x3) (- (* (+ (+ x2 x4) (- x1 x3)) x3) (* (* x1 x4) (+ (+ x2 (- x3 x4)) (- x1))))))
* * * * [misc]progress:  [ 249 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (* 1 (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* * * * [misc]progress:  [ 250 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (/ (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3))) (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (- (sqr (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (* (- (+ x2 x1) (- x3 x4)) x3)))
* * [misc]simplify:  iters left: 6 (16 enodes)
* * [misc]simplify:  iters left: 5 (41 enodes)
* * [misc]simplify:  iters left: 4 (86 enodes)
* * [misc]simplify:  iters left: 3 (198 enodes)
* [exit]simplify:  Simplified to (* (- (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2)) (* (+ (+ x4 x2) (- x1 x3)) x3)) (+ (* (+ (+ x4 x2) (- x1 x3)) x3) (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))))
* [exit]simplify:  Simplified to (* (- (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2)) (* (+ (+ x4 x2) (- x1 x3)) x3)) (+ (* (+ (+ x4 x2) (- x1 x3)) x3) (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))))
* [enter]simplify:  Simplifying (- (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3))
* * [misc]simplify:  iters left: 6 (14 enodes)
* * [misc]simplify:  iters left: 5 (28 enodes)
* * [misc]simplify:  iters left: 4 (60 enodes)
* * [misc]simplify:  iters left: 3 (115 enodes)
* * [misc]simplify:  iters left: 2 (190 enodes)
* * [misc]simplify:  iters left: 1 (239 enodes)
* [exit]simplify:  Simplified to (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* x3 (+ (- x2 x3) (+ x1 x4))))
* [exit]simplify:  Simplified to (- (* (* x1 x4) (+ (- x3 x4) (+ x2 (- x1)))) (* x3 (+ (- x2 x3) (+ x1 x4))))
* * * * [misc]progress:  [ 251 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (- (+ x2 x1) (- x3 x4)) x3) (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (- (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* * * * [misc]progress:  [ 252 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (log (/ (exp (+ x3 x4)) (exp (* x3 x4)))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (/ (exp (+ x3 x4)) (exp (* x3 x4)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (15 enodes)
* * [misc]simplify:  iters left: 3 (22 enodes)
* * [misc]simplify:  iters left: 2 (32 enodes)
* * [misc]simplify:  iters left: 1 (40 enodes)
* [exit]simplify:  Simplified to (exp (- (+ x4 x3) (* x4 x3)))
* [exit]simplify:  Simplified to (exp (- (+ x4 x3) (* x4 x3)))
* * * * [misc]progress:  [ 253 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (pow (- (+ x3 x4) (* x3 x4)) 1))) (* (+ x2 x3) x1))) x4))>
* * * * [misc]progress:  [ 254 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (exp (log (- (+ x3 x4) (* x3 x4)))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (log (- (+ x3 x4) (* x3 x4)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* * [misc]simplify:  iters left: 3 (11 enodes)
* * [misc]simplify:  iters left: 2 (15 enodes)
* * [misc]simplify:  iters left: 1 (16 enodes)
* [exit]simplify:  Simplified to (log (- (+ x4 x3) (* x4 x3)))
* [exit]simplify:  Simplified to (log (- (+ x4 x3) (* x4 x3)))
* * * * [misc]progress:  [ 255 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (log (exp (- (+ x3 x4) (* x3 x4)))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (exp (- (+ x3 x4) (* x3 x4)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* * [misc]simplify:  iters left: 3 (22 enodes)
* * [misc]simplify:  iters left: 2 (32 enodes)
* * [misc]simplify:  iters left: 1 (40 enodes)
* [exit]simplify:  Simplified to (exp (- (+ x4 x3) (* x4 x3)))
* [exit]simplify:  Simplified to (exp (- (+ x4 x3) (* x4 x3)))
* * * * [misc]progress:  [ 256 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (cube (cbrt (- (+ x3 x4) (* x3 x4)))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (cbrt (- (+ x3 x4) (* x3 x4)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* * [misc]simplify:  iters left: 3 (11 enodes)
* * [misc]simplify:  iters left: 2 (15 enodes)
* * [misc]simplify:  iters left: 1 (16 enodes)
* [exit]simplify:  Simplified to (cbrt (- (+ x4 x3) (* x4 x3)))
* [exit]simplify:  Simplified to (cbrt (- (+ x4 x3) (* x4 x3)))
* * * * [misc]progress:  [ 257 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (cbrt (cube (- (+ x3 x4) (* x3 x4)))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (cube (- (+ x3 x4) (* x3 x4)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (12 enodes)
* * [misc]simplify:  iters left: 3 (21 enodes)
* * [misc]simplify:  iters left: 2 (38 enodes)
* * [misc]simplify:  iters left: 1 (65 enodes)
* [exit]simplify:  Simplified to (cube (- (+ x4 x3) (* x4 x3)))
* [exit]simplify:  Simplified to (cube (- (+ x4 x3) (* x4 x3)))
* * * * [misc]progress:  [ 258 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (sqr (sqrt (- (+ x3 x4) (* x3 x4)))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (sqrt (- (+ x3 x4) (* x3 x4)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* * [misc]simplify:  iters left: 3 (11 enodes)
* * [misc]simplify:  iters left: 2 (15 enodes)
* * [misc]simplify:  iters left: 1 (16 enodes)
* [exit]simplify:  Simplified to (sqrt (- (+ x4 x3) (* x4 x3)))
* [exit]simplify:  Simplified to (sqrt (- (+ x4 x3) (* x4 x3)))
* * * * [misc]progress:  [ 259 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (/ (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))
* * [misc]simplify:  iters left: 5 (8 enodes)
* * [misc]simplify:  iters left: 4 (12 enodes)
* * [misc]simplify:  iters left: 3 (20 enodes)
* * [misc]simplify:  iters left: 2 (40 enodes)
* * [misc]simplify:  iters left: 1 (78 enodes)
* [exit]simplify:  Simplified to (- (cube (+ x4 x3)) (cube (* x4 x3)))
* [exit]simplify:  Simplified to (- (cube (+ x4 x3)) (cube (* x4 x3)))
* [enter]simplify:  Simplifying (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (21 enodes)
* * [misc]simplify:  iters left: 4 (40 enodes)
* * [misc]simplify:  iters left: 3 (79 enodes)
* * [misc]simplify:  iters left: 2 (165 enodes)
* * [misc]simplify:  iters left: 1 (239 enodes)
* [exit]simplify:  Simplified to (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))
* [exit]simplify:  Simplified to (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))
* * * * [misc]progress:  [ 260 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (+ (+ x3 x4) (- (* x3 x4))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (- (* x3 x4))
* * [misc]simplify:  iters left: 4 (4 enodes)
* * [misc]simplify:  iters left: 3 (9 enodes)
* * [misc]simplify:  iters left: 2 (10 enodes)
* * [misc]simplify:  iters left: 1 (11 enodes)
* [exit]simplify:  Simplified to (* x3 (- x4))
* [exit]simplify:  Simplified to (* x3 (- x4))
* * * * [misc]progress:  [ 261 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (* 1 (- (+ x3 x4) (* x3 x4))))) (* (+ x2 x3) x1))) x4))>
* * * * [misc]progress:  [ 262 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (/ (- (sqr (+ x3 x4)) (sqr (* x3 x4))) (+ (+ x3 x4) (* x3 x4))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (- (sqr (+ x3 x4)) (sqr (* x3 x4)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (17 enodes)
* * [misc]simplify:  iters left: 3 (37 enodes)
* * [misc]simplify:  iters left: 2 (99 enodes)
* * [misc]simplify:  iters left: 1 (289 enodes)
* [exit]simplify:  Simplified to (* (- (+ x4 x3) (* x4 x3)) (+ (* x4 x3) (+ x4 x3)))
* [exit]simplify:  Simplified to (* (- (+ x4 x3) (* x4 x3)) (+ (* x4 x3) (+ x4 x3)))
* [enter]simplify:  Simplifying (+ (+ x3 x4) (* x3 x4))
* * [misc]simplify:  iters left: 4 (5 enodes)
* * [misc]simplify:  iters left: 3 (9 enodes)
* * [misc]simplify:  iters left: 2 (15 enodes)
* * [misc]simplify:  iters left: 1 (23 enodes)
* [exit]simplify:  Simplified to (+ (* x4 x3) (+ x4 x3))
* [exit]simplify:  Simplified to (+ (* x4 x3) (+ x4 x3))
* * * * [misc]progress:  [ 263 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (* (+ (sqrt (+ x3 x4)) (sqrt (* x3 x4))) (- (sqrt (+ x3 x4)) (sqrt (* x3 x4)))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (+ (sqrt (+ x3 x4)) (sqrt (* x3 x4)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* [exit]simplify:  Simplified to (+ (sqrt (* x4 x3)) (sqrt (+ x4 x3)))
* [exit]simplify:  Simplified to (+ (sqrt (* x4 x3)) (sqrt (+ x4 x3)))
* [enter]simplify:  Simplifying (- (sqrt (+ x3 x4)) (sqrt (* x3 x4)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* [exit]simplify:  Simplified to (- (sqrt (+ x4 x3)) (sqrt (* x4 x3)))
* [exit]simplify:  Simplified to (- (sqrt (+ x4 x3)) (sqrt (* x4 x3)))
* * * * [misc]progress:  [ 264 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* x2 (+ (- x1 x2) (+ x3 (- x4 (* x3 x4))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (- x4 (* x3 x4))
* * [misc]simplify:  iters left: 4 (4 enodes)
* * [misc]simplify:  iters left: 3 (5 enodes)
* [exit]simplify:  Simplified to (- x4 (* x3 x4))
* [exit]simplify:  Simplified to (- x4 (* x3 x4))
* * * * [misc]progress:  [ 265 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (pow (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) 1) (* (+ x2 x3) x1))) x4))>
* * * * [misc]progress:  [ 266 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (exp (log (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (log (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))))
* * [misc]simplify:  iters left: 6 (11 enodes)
* * [misc]simplify:  iters left: 5 (30 enodes)
* * [misc]simplify:  iters left: 4 (51 enodes)
* * [misc]simplify:  iters left: 3 (77 enodes)
* * [misc]simplify:  iters left: 2 (104 enodes)
* * [misc]simplify:  iters left: 1 (167 enodes)
* [exit]simplify:  Simplified to (log (* x2 (- (- (+ x1 x4) (- x2 x3)) (* x3 x4))))
* [exit]simplify:  Simplified to (log (* x2 (- (- (+ x1 x4) (- x2 x3)) (* x3 x4))))
* * * * [misc]progress:  [ 267 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (log (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))))
* * [misc]simplify:  iters left: 6 (11 enodes)
* * [misc]simplify:  iters left: 5 (29 enodes)
* * [misc]simplify:  iters left: 4 (55 enodes)
* * [misc]simplify:  iters left: 3 (96 enodes)
* * [misc]simplify:  iters left: 2 (161 enodes)
* * [misc]simplify:  iters left: 1 (262 enodes)
* [exit]simplify:  Simplified to (pow (exp x2) (- (+ x4 (- x1 x2)) (- (* x3 x4) x3)))
* [exit]simplify:  Simplified to (pow (exp x2) (- (+ x4 (- x1 x2)) (- (* x3 x4) x3)))
* * * * [misc]progress:  [ 268 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (cube (cbrt (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (cbrt (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))))
* * [misc]simplify:  iters left: 6 (11 enodes)
* * [misc]simplify:  iters left: 5 (27 enodes)
* * [misc]simplify:  iters left: 4 (47 enodes)
* * [misc]simplify:  iters left: 3 (73 enodes)
* * [misc]simplify:  iters left: 2 (102 enodes)
* * [misc]simplify:  iters left: 1 (148 enodes)
* [exit]simplify:  Simplified to (cbrt (* x2 (- (+ x4 (- x1 x2)) (- (* x3 x4) x3))))
* [exit]simplify:  Simplified to (cbrt (* x2 (- (+ x4 (- x1 x2)) (- (* x3 x4) x3))))
* * * * [misc]progress:  [ 269 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (cbrt (cube (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (cube (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))))
* * [misc]simplify:  iters left: 6 (11 enodes)
* * [misc]simplify:  iters left: 5 (32 enodes)
* * [misc]simplify:  iters left: 4 (68 enodes)
* * [misc]simplify:  iters left: 3 (151 enodes)
* * [misc]simplify:  iters left: 2 (460 enodes)
* [exit]simplify:  Simplified to (cube (* x2 (+ (+ x4 (- x1 x2)) (- x3 (* x3 x4)))))
* [exit]simplify:  Simplified to (cube (* x2 (+ (+ x4 (- x1 x2)) (- x3 (* x3 x4)))))
* * * * [misc]progress:  [ 270 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (sqr (sqrt (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (sqrt (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))))
* * [misc]simplify:  iters left: 6 (11 enodes)
* * [misc]simplify:  iters left: 5 (27 enodes)
* * [misc]simplify:  iters left: 4 (47 enodes)
* * [misc]simplify:  iters left: 3 (73 enodes)
* * [misc]simplify:  iters left: 2 (102 enodes)
* * [misc]simplify:  iters left: 1 (148 enodes)
* [exit]simplify:  Simplified to (sqrt (* x2 (- (+ x4 (- x1 x2)) (- (* x3 x4) x3))))
* [exit]simplify:  Simplified to (sqrt (* x2 (- (+ x4 (- x1 x2)) (- (* x3 x4) x3))))
* * * * [misc]progress:  [ 271 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* 1 (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* (+ x2 x3) x1))) x4))>
* * * * [misc]progress:  [ 272 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (+ (* x2 (- x1 x2)) (* x2 (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (* x2 (- x1 x2))
* * [misc]simplify:  iters left: 4 (4 enodes)
* * [misc]simplify:  iters left: 3 (5 enodes)
* [exit]simplify:  Simplified to (* x2 (- x1 x2))
* [exit]simplify:  Simplified to (* x2 (- x1 x2))
* [enter]simplify:  Simplifying (* x2 (- (+ x3 x4) (* x3 x4)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (19 enodes)
* * [misc]simplify:  iters left: 3 (24 enodes)
* * [misc]simplify:  iters left: 2 (28 enodes)
* * [misc]simplify:  iters left: 1 (34 enodes)
* [exit]simplify:  Simplified to (* (- (+ x3 x4) (* x4 x3)) x2)
* [exit]simplify:  Simplified to (* (- (+ x3 x4) (* x4 x3)) x2)
* * * * [misc]progress:  [ 273 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (+ (* (- x1 x2) x2) (* (- (+ x3 x4) (* x3 x4)) x2)) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (* (- x1 x2) x2)
* * [misc]simplify:  iters left: 4 (4 enodes)
* * [misc]simplify:  iters left: 3 (5 enodes)
* [exit]simplify:  Simplified to (* (- x1 x2) x2)
* [exit]simplify:  Simplified to (* (- x1 x2) x2)
* [enter]simplify:  Simplifying (* (- (+ x3 x4) (* x3 x4)) x2)
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (19 enodes)
* * [misc]simplify:  iters left: 3 (24 enodes)
* * [misc]simplify:  iters left: 2 (28 enodes)
* * [misc]simplify:  iters left: 1 (34 enodes)
* [exit]simplify:  Simplified to (* x2 (- (+ x4 x3) (* x4 x3)))
* [exit]simplify:  Simplified to (* x2 (- (+ x4 x3) (* x4 x3)))
* * * * [misc]progress:  [ 274 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 1) (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (* x2 1)
* * [misc]simplify:  iters left: 2 (3 enodes)
* * [misc]simplify:  iters left: 1 (5 enodes)
* [exit]simplify:  Simplified to x2
* [exit]simplify:  Simplified to x2
* * * * [misc]progress:  [ 275 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (* x2 1) (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (* x2 1)
* * [misc]simplify:  iters left: 2 (3 enodes)
* * [misc]simplify:  iters left: 1 (5 enodes)
* [exit]simplify:  Simplified to x2
* [exit]simplify:  Simplified to x2
* * * * [misc]progress:  [ 276 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (/ (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4)))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3)))))
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (65 enodes)
* * [misc]simplify:  iters left: 4 (151 enodes)
* * [misc]simplify:  iters left: 3 (350 enodes)
* [exit]simplify:  Simplified to (+ (* (* (- (cube x1) (cube x2)) x2) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4)))) (* (+ (* (sqr x1) x2) (* (* x2 x2) (+ x1 x2))) (- (cube (+ x3 x4)) (cube (* x4 x3)))))
* [exit]simplify:  Simplified to (+ (* (* (- (cube x1) (cube x2)) x2) (+ (* (* x4 x3) (+ (+ x3 x4) (* x4 x3))) (sqr (+ x3 x4)))) (* (+ (* (sqr x1) x2) (* (* x2 x2) (+ x1 x2))) (- (cube (+ x3 x4)) (cube (* x4 x3)))))
* * * * [misc]progress:  [ 277 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (/ (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4))))))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (58 enodes)
* * [misc]simplify:  iters left: 4 (133 enodes)
* * [misc]simplify:  iters left: 3 (313 enodes)
* [exit]simplify:  Simplified to (+ (* (* x2 (+ (* x4 x3) (+ x3 x4))) (- (cube x1) (cube x2))) (* (+ (* (* x2 x2) (+ x1 x2)) (* x2 (sqr x1))) (* (- (+ x3 x4) (* x4 x3)) (+ (* x4 x3) (+ x3 x4)))))
* [exit]simplify:  Simplified to (+ (* (* x2 (+ (* x4 x3) (+ x3 x4))) (- (cube x1) (cube x2))) (* (+ (* (* x2 x2) (+ x1 x2)) (* x2 (sqr x1))) (* (- (+ x3 x4) (* x4 x3)) (+ (* x4 x3) (+ x3 x4)))))
* * * * [misc]progress:  [ 278 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (/ (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4)))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3)))))
* * [misc]simplify:  iters left: 6 (23 enodes)
* * [misc]simplify:  iters left: 5 (58 enodes)
* * [misc]simplify:  iters left: 4 (122 enodes)
* * [misc]simplify:  iters left: 3 (343 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ x1 x2) x2) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (+ (* x2 (* (* (+ x4 x3) (- x1 x2)) (* (+ x4 x3) (+ x1 x2)))) (* (* x2 (* x4 x3)) (* (+ (* x4 x3) (+ x4 x3)) (* (+ x1 x2) (- x1 x2))))))
* [exit]simplify:  Simplified to (+ (* (* (+ x1 x2) x2) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (+ (* x2 (* (* (+ x4 x3) (- x1 x2)) (* (+ x4 x3) (+ x1 x2)))) (* (* x2 (* x4 x3)) (* (+ (* x4 x3) (+ x4 x3)) (* (+ x1 x2) (- x1 x2))))))
* * * * [misc]progress:  [ 279 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (/ (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4))))))
* * [misc]simplify:  iters left: 6 (18 enodes)
* * [misc]simplify:  iters left: 5 (50 enodes)
* * [misc]simplify:  iters left: 4 (110 enodes)
* * [misc]simplify:  iters left: 3 (283 enodes)
* [exit]simplify:  Simplified to (+ (* (* x2 (+ x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (+ (* x4 x3) (+ x4 x3)))) (* x2 (* (+ (* x4 x3) (+ x4 x3)) (* (- x1 x2) (+ x1 x2)))))
* [exit]simplify:  Simplified to (+ (* (* x2 (+ x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (+ (* x4 x3) (+ x4 x3)))) (* x2 (* (+ (* x4 x3) (+ x4 x3)) (* (- x1 x2) (+ x1 x2)))))
* * * * [misc]progress:  [ 280 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (/ (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3))) (+ (sqr (- x1 x2)) (- (sqr (- (+ x3 x4) (* x3 x4))) (* (- x1 x2) (- (+ x3 x4) (* x3 x4)))))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (* x2 (+ (pow (- x1 x2) 3) (pow (- (+ x3 x4) (* x3 x4)) 3)))
* * [misc]simplify:  iters left: 6 (13 enodes)
* * [misc]simplify:  iters left: 5 (27 enodes)
* * [misc]simplify:  iters left: 4 (34 enodes)
* * [misc]simplify:  iters left: 3 (54 enodes)
* * [misc]simplify:  iters left: 2 (125 enodes)
* * [misc]simplify:  iters left: 1 (211 enodes)
* [exit]simplify:  Simplified to (* x2 (+ (cube (- x1 x2)) (cube (- (+ x4 x3) (* x4 x3)))))
* [exit]simplify:  Simplified to (* x2 (+ (cube (- x1 x2)) (cube (- (+ x4 x3) (* x4 x3)))))
* * * * [misc]progress:  [ 281 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (/ (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4))))) (- (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) x4))>
* [enter]simplify:  Simplifying (* x2 (- (sqr (- x1 x2)) (sqr (- (+ x3 x4) (* x3 x4)))))
* * [misc]simplify:  iters left: 6 (12 enodes)
* * [misc]simplify:  iters left: 5 (22 enodes)
* * [misc]simplify:  iters left: 4 (38 enodes)
* * [misc]simplify:  iters left: 3 (97 enodes)
* * [misc]simplify:  iters left: 2 (180 enodes)
* * [misc]simplify:  iters left: 1 (387 enodes)
* [exit]simplify:  Simplified to (* x2 (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3)))))
* [exit]simplify:  Simplified to (* x2 (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x3 x4) (* x4 x3)))))
* * * * [misc]progress:  [ 282 / 282 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (+ (+ (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) (* (- (+ x2 x1) (- x3 x4)) x3)) (- (* (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) x2) (* (+ x2 x3) x1))) x4))>
* * * [misc]progress:  adding candidates to table
* * [misc]progress:  iteration 2 / 3
* * * [misc]progress:  picking best candidate
* * * * [misc]pick:  Picked  #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* * * [misc]progress:  localizing error
* * * [misc]progress:  generating series expansions
* * * * [misc]progress:  [ 1 / 4 ] generating series at (2 1 1 2 1)
* [misc]approximate:  Taking taylor expansion of (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) in x4
* [misc]taylor:  Taking taylor expansion of (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (- x1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (+ x1 (- x2)) into (- x1 x2)
* [misc]backup-simplify:  Simplify (+ x3 0) into x3
* [misc]backup-simplify:  Simplify (* x3 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x3 0) into x3
* [misc]backup-simplify:  Simplify (+ (- x1 x2) x3) into (- (+ x1 x3) x2)
* [misc]backup-simplify:  Simplify (* x2 (- (+ x1 x3) x2)) into (* (- (+ x1 x3) x2) x2)
* [misc]backup-simplify:  Simplify (exp (* (- (+ x1 x3) x2) x2)) into (exp (* (- (+ x1 x3) x2) x2))
* [misc]taylor:  Taking taylor expansion of (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) in x3
* [misc]taylor:  Taking taylor expansion of (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (- x1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (+ x1 (- x2)) into (- x1 x2)
* [misc]backup-simplify:  Simplify (+ 0 x4) into x4
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]backup-simplify:  Simplify (+ (- x1 x2) x4) into (- (+ x1 x4) x2)
* [misc]backup-simplify:  Simplify (* x2 (- (+ x1 x4) x2)) into (* x2 (- (+ x1 x4) x2))
* [misc]backup-simplify:  Simplify (exp (* x2 (- (+ x1 x4) x2))) into (exp (* x2 (- (+ x1 x4) x2)))
* [misc]taylor:  Taking taylor expansion of (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (- x1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (+ 0 (- x2)) into (- x2)
* [misc]backup-simplify:  Simplify (+ x3 x4) into (+ x4 x3)
* [misc]backup-simplify:  Simplify (* x3 x4) into (* x4 x3)
* [misc]backup-simplify:  Simplify (- (* x4 x3)) into (- (* x4 x3))
* [misc]backup-simplify:  Simplify (+ (+ x4 x3) (- (* x4 x3))) into (- (+ x4 x3) (* x4 x3))
* [misc]backup-simplify:  Simplify (+ (- x2) (- (+ x4 x3) (* x4 x3))) into (- (+ x4 x3) (+ (* x4 x3) x2))
* [misc]backup-simplify:  Simplify (* x2 (- (+ x4 x3) (+ (* x4 x3) x2))) into (* x2 (- (+ x4 x3) (+ (* x4 x3) x2)))
* [misc]backup-simplify:  Simplify (exp (* x2 (- (+ x4 x3) (+ (* x4 x3) x2)))) into (exp (* x2 (- (+ x4 x3) (+ (* x4 x3) x2))))
* [misc]taylor:  Taking taylor expansion of (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (- x1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x1 0) into x1
* [misc]backup-simplify:  Simplify (+ x3 x4) into (+ x4 x3)
* [misc]backup-simplify:  Simplify (* x3 x4) into (* x4 x3)
* [misc]backup-simplify:  Simplify (- (* x4 x3)) into (- (* x4 x3))
* [misc]backup-simplify:  Simplify (+ (+ x4 x3) (- (* x4 x3))) into (- (+ x4 x3) (* x4 x3))
* [misc]backup-simplify:  Simplify (+ x1 (- (+ x4 x3) (* x4 x3))) into (- (+ x1 (+ x4 x3)) (* x4 x3))
* [misc]backup-simplify:  Simplify (* 0 (- (+ x1 (+ x4 x3)) (* x4 x3))) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x3 0) (* 0 x4)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (+ (* 0 -1) (* 1 (- (+ x1 (+ x4 x3)) (* x4 x3)))) into (- (+ x1 (+ x4 x3)) (* x4 x3))
* [misc]backup-simplify:  Simplify (exp 0) into 1
* [misc]taylor:  Taking taylor expansion of (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (- x1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (+ x3 x4) (* x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x1 0) into x1
* [misc]backup-simplify:  Simplify (+ x3 x4) into (+ x4 x3)
* [misc]backup-simplify:  Simplify (* x3 x4) into (* x4 x3)
* [misc]backup-simplify:  Simplify (- (* x4 x3)) into (- (* x4 x3))
* [misc]backup-simplify:  Simplify (+ (+ x4 x3) (- (* x4 x3))) into (- (+ x4 x3) (* x4 x3))
* [misc]backup-simplify:  Simplify (+ x1 (- (+ x4 x3) (* x4 x3))) into (- (+ x1 (+ x4 x3)) (* x4 x3))
* [misc]backup-simplify:  Simplify (* 0 (- (+ x1 (+ x4 x3)) (* x4 x3))) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x3 0) (* 0 x4)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (+ (* 0 -1) (* 1 (- (+ x1 (+ x4 x3)) (* x4 x3)))) into (- (+ x1 (+ x4 x3)) (* x4 x3))
* [misc]backup-simplify:  Simplify (exp 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of 1 in x3
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* (exp 0) (+ (* (/ (pow (- (+ x1 (+ x4 x3)) (* x4 x3)) 1) 1)))) into (- (+ x1 (+ x4 x3)) (* x4 x3))
* [misc]taylor:  Taking taylor expansion of (- (+ x1 (+ x4 x3)) (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (+ x1 (+ x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (+ x4 x3) into (+ x4 x3)
* [misc]backup-simplify:  Simplify (+ 0 (+ x4 x3)) into (+ x4 x3)
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (- (* x4 x3)) into (- (* x4 x3))
* [misc]backup-simplify:  Simplify (+ (+ x4 x3) (- (* x4 x3))) into (- (+ x4 x3) (* x4 x3))
* [misc]taylor:  Taking taylor expansion of (- (+ x4 x3) (* x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (+ x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x3 0) (+ (* 0 0) (* 0 x4))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 -1) (* 0 (- (+ x1 (+ x4 x3)) (* x4 x3))))) into (- 1)
* [misc]backup-simplify:  Simplify (* (exp 0) (+ (* (/ (pow (- (+ x1 (+ x4 x3)) (* x4 x3)) 2) 2)) (* (/ (pow (- 1) 1) 1)))) into (- (+ (* 1/2 (sqr x4)) (+ (* x4 x3) (+ (* 1/2 (* (sqr x4) (sqr x3))) (+ (* 1/2 (sqr x3)) (+ (* 1/2 (sqr x1)) (+ (* x1 x3) (* x1 x4))))))) (+ 1 (+ (* x4 (sqr x3)) (+ (* (sqr x4) x3) (* x1 (* x4 x3))))))
* [misc]taylor:  Taking taylor expansion of (- (+ (* 1/2 (sqr x4)) (+ (* x4 x3) (+ (* 1/2 (* (sqr x4) (sqr x3))) (+ (* 1/2 (sqr x3)) (+ (* 1/2 (sqr x1)) (+ (* x1 x3) (* x1 x4))))))) (+ 1 (+ (* x4 (sqr x3)) (+ (* (sqr x4) x3) (* x1 (* x4 x3)))))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (* 1/2 (sqr x4)) (+ (* x4 x3) (+ (* 1/2 (* (sqr x4) (sqr x3))) (+ (* 1/2 (sqr x3)) (+ (* 1/2 (sqr x1)) (+ (* x1 x3) (* x1 x4))))))) in x1
* [misc]taylor:  Taking taylor expansion of (* 1/2 (sqr x4)) in x1
* [misc]taylor:  Taking taylor expansion of 1/2 in x1
* [misc]backup-simplify:  Simplify 1/2 into 1/2
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (+ (* x4 x3) (+ (* 1/2 (* (sqr x4) (sqr x3))) (+ (* 1/2 (sqr x3)) (+ (* 1/2 (sqr x1)) (+ (* x1 x3) (* x1 x4)))))) in x1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (+ (* 1/2 (* (sqr x4) (sqr x3))) (+ (* 1/2 (sqr x3)) (+ (* 1/2 (sqr x1)) (+ (* x1 x3) (* x1 x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (* 1/2 (* (sqr x4) (sqr x3))) in x1
* [misc]taylor:  Taking taylor expansion of 1/2 in x1
* [misc]backup-simplify:  Simplify 1/2 into 1/2
* [misc]taylor:  Taking taylor expansion of (* (sqr x4) (sqr x3)) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (+ (* 1/2 (sqr x3)) (+ (* 1/2 (sqr x1)) (+ (* x1 x3) (* x1 x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (* 1/2 (sqr x3)) in x1
* [misc]taylor:  Taking taylor expansion of 1/2 in x1
* [misc]backup-simplify:  Simplify 1/2 into 1/2
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (+ (* 1/2 (sqr x1)) (+ (* x1 x3) (* x1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (* 1/2 (sqr x1)) in x1
* [misc]taylor:  Taking taylor expansion of 1/2 in x1
* [misc]backup-simplify:  Simplify 1/2 into 1/2
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (* x1 x3) (* x1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (* x1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (+ 1 (+ (* x4 (sqr x3)) (+ (* (sqr x4) x3) (* x1 (* x4 x3))))) in x1
* [misc]taylor:  Taking taylor expansion of 1 in x1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (* x4 (sqr x3)) (+ (* (sqr x4) x3) (* x1 (* x4 x3)))) in x1
* [misc]taylor:  Taking taylor expansion of (* x4 (sqr x3)) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (+ (* (sqr x4) x3) (* x1 (* x4 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (* (sqr x4) x3) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (* x1 (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (* 1/2 (sqr x4)) into (* 1/2 (sqr x4))
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (* x3 x3) into (sqr x3)
* [misc]backup-simplify:  Simplify (* (sqr x4) (sqr x3)) into (* (sqr x4) (sqr x3))
* [misc]backup-simplify:  Simplify (* 1/2 (* (sqr x4) (sqr x3))) into (* 1/2 (* (sqr x4) (sqr x3)))
* [misc]backup-simplify:  Simplify (* x3 x3) into (sqr x3)
* [misc]backup-simplify:  Simplify (* 1/2 (sqr x3)) into (* 1/2 (sqr x3))
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* 1/2 0) into 0
* [misc]backup-simplify:  Simplify (* 0 x3) into 0
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 1/2 (sqr x3)) 0) into (* 1/2 (sqr x3))
* [misc]backup-simplify:  Simplify (+ (* 1/2 (* (sqr x4) (sqr x3))) (* 1/2 (sqr x3))) into (+ (* 1/2 (* (sqr x4) (sqr x3))) (* 1/2 (sqr x3)))
* [misc]backup-simplify:  Simplify (+ (* x4 x3) (+ (* 1/2 (* (sqr x4) (sqr x3))) (* 1/2 (sqr x3)))) into (+ (* x4 x3) (+ (* 1/2 (* (sqr x4) (sqr x3))) (* 1/2 (sqr x3))))
* [misc]backup-simplify:  Simplify (+ (* 1/2 (sqr x4)) (+ (* x4 x3) (+ (* 1/2 (* (sqr x4) (sqr x3))) (* 1/2 (sqr x3))))) into (+ (* 1/2 (sqr x4)) (+ (* x4 x3) (+ (* 1/2 (* (sqr x4) (sqr x3))) (* 1/2 (sqr x3)))))
* [misc]backup-simplify:  Simplify (* x3 x3) into (sqr x3)
* [misc]backup-simplify:  Simplify (* x4 (sqr x3)) into (* x4 (sqr x3))
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (* (sqr x4) x3) into (* (sqr x4) x3)
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (* 0 (* x4 x3)) into 0
* [misc]backup-simplify:  Simplify (+ (* (sqr x4) x3) 0) into (* (sqr x4) x3)
* [misc]backup-simplify:  Simplify (+ (* x4 (sqr x3)) (* (sqr x4) x3)) into (+ (* x4 (sqr x3)) (* (sqr x4) x3))
* [misc]backup-simplify:  Simplify (+ 1 (+ (* x4 (sqr x3)) (* (sqr x4) x3))) into (+ (* x4 (sqr x3)) (+ 1 (* (sqr x4) x3)))
* [misc]backup-simplify:  Simplify (- (+ (* x4 (sqr x3)) (+ 1 (* (sqr x4) x3)))) into (- (+ (* x4 (sqr x3)) (+ 1 (* (sqr x4) x3))))
* [misc]backup-simplify:  Simplify (+ (+ (* 1/2 (sqr x4)) (+ (* x4 x3) (+ (* 1/2 (* (sqr x4) (sqr x3))) (* 1/2 (sqr x3))))) (- (+ (* x4 (sqr x3)) (+ 1 (* (sqr x4) x3))))) into (- (+ (* 1/2 (sqr x4)) (+ (* x4 x3) (+ (* 1/2 (* (sqr x4) (sqr x3))) (* 1/2 (sqr x3))))) (+ (* x4 (sqr x3)) (+ 1 (* (sqr x4) x3))))
* [misc]taylor:  Taking taylor expansion of (- (+ (* 1/2 (sqr x4)) (+ (* x4 x3) (+ (* 1/2 (* (sqr x4) (sqr x3))) (* 1/2 (sqr x3))))) (+ (* x4 (sqr x3)) (+ 1 (* (sqr x4) x3)))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (* 1/2 (sqr x4)) (+ (* x4 x3) (+ (* 1/2 (* (sqr x4) (sqr x3))) (* 1/2 (sqr x3))))) in x3
* [misc]taylor:  Taking taylor expansion of (* 1/2 (sqr x4)) in x3
* [misc]taylor:  Taking taylor expansion of 1/2 in x3
* [misc]backup-simplify:  Simplify 1/2 into 1/2
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (+ (* x4 x3) (+ (* 1/2 (* (sqr x4) (sqr x3))) (* 1/2 (sqr x3)))) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (* 1/2 (* (sqr x4) (sqr x3))) (* 1/2 (sqr x3))) in x3
* [misc]taylor:  Taking taylor expansion of (* 1/2 (* (sqr x4) (sqr x3))) in x3
* [misc]taylor:  Taking taylor expansion of 1/2 in x3
* [misc]backup-simplify:  Simplify 1/2 into 1/2
* [misc]taylor:  Taking taylor expansion of (* (sqr x4) (sqr x3)) in x3
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* 1/2 (sqr x3)) in x3
* [misc]taylor:  Taking taylor expansion of 1/2 in x3
* [misc]backup-simplify:  Simplify 1/2 into 1/2
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (* x4 (sqr x3)) (+ 1 (* (sqr x4) x3))) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 (sqr x3)) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ 1 (* (sqr x4) x3)) in x3
* [misc]taylor:  Taking taylor expansion of 1 in x3
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* (sqr x4) x3) in x3
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (* 1/2 (sqr x4)) into (* 1/2 (sqr x4))
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* (sqr x4) 0) into 0
* [misc]backup-simplify:  Simplify (* 1/2 0) into 0
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* 1/2 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 1/2 (sqr x4)) 0) into (* 1/2 (sqr x4))
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (* (sqr x4) 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ (* 1/2 (sqr x4)) -1) into (- (* 1/2 (sqr x4)) 1)
* [misc]taylor:  Taking taylor expansion of (- (* 1/2 (sqr x4)) 1) in x4
* [misc]taylor:  Taking taylor expansion of (* 1/2 (sqr x4)) in x4
* [misc]taylor:  Taking taylor expansion of 1/2 in x4
* [misc]backup-simplify:  Simplify 1/2 into 1/2
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* 1/2 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x3)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x3
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ (* 1 (* 1 (* 1 (* x1 x2)))) (+ (* -1 (sqr (* 1 (* 1 (* 1 x2))))) 1)) into (- (+ (* x1 x2) 1) (sqr x2))
* [misc]approximate:  Taking taylor expansion of (exp (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))))) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (exp (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))))) in x4
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))) in x4
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1) (/ 1 x2)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (* (/ 1 x3) 1) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (- (/ 1 x3)) into (- (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ 1 (- (/ 1 x3))) into (- 1 (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ 0 (- 1 (/ 1 x3))) into (- 1 (/ 1 x3))
* [misc]backup-simplify:  Simplify (* (/ 1 x2) (- 1 (/ 1 x3))) into (/ (- 1 (/ 1 x3)) x2)
* [misc]backup-simplify:  Simplify (exp (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))))) into (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2))
* [misc]taylor:  Taking taylor expansion of (exp (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))))) in x3
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1) (/ 1 x2)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* 1 (/ 1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ 1 (- (/ 1 x4))) into (- 1 (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ 0 (- 1 (/ 1 x4))) into (- 1 (/ 1 x4))
* [misc]backup-simplify:  Simplify (* (/ 1 x2) (- 1 (/ 1 x4))) into (/ (- 1 (/ 1 x4)) x2)
* [misc]backup-simplify:  Simplify (exp (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))))) into (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2))
* [misc]taylor:  Taking taylor expansion of (exp (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))))) in x1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1) (/ 1 x2)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* (/ 1 x2) 1) into (/ 1 x2)
* [misc]backup-simplify:  Simplify (exp (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))))) into (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2))
* [misc]taylor:  Taking taylor expansion of (exp (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))))) in x2
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1) (/ 1 x2)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* 1 -1) into -1
* [misc]backup-simplify:  Simplify (exp (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))))) into (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2))
* [misc]taylor:  Taking taylor expansion of (exp (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))))) in x2
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1) (/ 1 x2)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* 1 -1) into -1
* [misc]backup-simplify:  Simplify (exp (* (/ 1 x2) (+ (- (/ 1 x1) (/ 1 x2)) (- (+ (/ 1 x3) (/ 1 x4)) (* (/ 1 x3) (/ 1 x4)))))) into (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2))
* [misc]taylor:  Taking taylor expansion of (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2)) in x1
* [misc]taylor:  Taking taylor expansion of (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2) in x1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 (* x4 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (/ 1 (* x4 x3)) into (/ 1 (* x4 x3))
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2)) into (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2))
* [misc]taylor:  Taking taylor expansion of (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2)) in x3
* [misc]taylor:  Taking taylor expansion of (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2) in x3
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 (* x4 x3))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ 1 (- (/ 1 x4))) into (- 1 (/ 1 x4))
* [misc]backup-simplify:  Simplify (/ (- 1 (/ 1 x4)) x2) into (/ (- 1 (/ 1 x4)) x2)
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2)) into (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2))
* [misc]taylor:  Taking taylor expansion of (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2)) in x4
* [misc]taylor:  Taking taylor expansion of (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2) in x4
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 (* x4 x3))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x4
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* 0 x3) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 x3)) into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (- (/ 1 x3)) into (- (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ 1 (- (/ 1 x3))) into (- 1 (/ 1 x3))
* [misc]backup-simplify:  Simplify (/ (- 1 (/ 1 x3)) x2) into (/ (- 1 (/ 1 x3)) x2)
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2)) into (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2))
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2)) into (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2))
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2)) into (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2))
* [misc]approximate:  Taking taylor expansion of (exp (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))))) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (exp (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))))) in x4
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x4
* [misc]taylor:  Taking taylor expansion of (- x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))) in x4
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1)) (/ 1 (- x2))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x4
* [misc]taylor:  Taking taylor expansion of (- x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x4
* [misc]taylor:  Taking taylor expansion of (- x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (* (/ -1 x3) -1) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (- (/ 1 x3)) into (- (/ 1 x3))
* [misc]backup-simplify:  Simplify (+ -1 (- (/ 1 x3))) into (- (+ (/ 1 x3) 1))
* [misc]backup-simplify:  Simplify (+ 0 (- (+ (/ 1 x3) 1))) into (- (+ (/ 1 x3) 1))
* [misc]backup-simplify:  Simplify (* (/ -1 x2) (- (+ (/ 1 x3) 1))) into (/ (+ (/ 1 x3) 1) x2)
* [misc]backup-simplify:  Simplify (exp (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))))) into (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) x2)))
* [misc]taylor:  Taking taylor expansion of (exp (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))))) in x3
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x3
* [misc]taylor:  Taking taylor expansion of (- x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))) in x3
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1)) (/ 1 (- x2))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x3
* [misc]taylor:  Taking taylor expansion of (- x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x3
* [misc]taylor:  Taking taylor expansion of (- x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* -1 (/ -1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (- (/ 1 x4)) into (- (/ 1 x4))
* [misc]backup-simplify:  Simplify (+ -1 (- (/ 1 x4))) into (- (+ 1 (/ 1 x4)))
* [misc]backup-simplify:  Simplify (+ 0 (- (+ 1 (/ 1 x4)))) into (- (+ 1 (/ 1 x4)))
* [misc]backup-simplify:  Simplify (* (/ -1 x2) (- (+ 1 (/ 1 x4)))) into (/ (+ 1 (/ 1 x4)) x2)
* [misc]backup-simplify:  Simplify (exp (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))))) into (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) x2)))
* [misc]taylor:  Taking taylor expansion of (exp (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))))) in x1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1)) (/ 1 (- x2))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* (/ -1 x2) -1) into (/ 1 x2)
* [misc]backup-simplify:  Simplify (exp (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))))) into (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) x2)))
* [misc]taylor:  Taking taylor expansion of (exp (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))))) in x2
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1)) (/ 1 (- x2))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]backup-simplify:  Simplify (- -1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* -1 1) into -1
* [misc]backup-simplify:  Simplify (exp (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))))) into (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) x2)))
* [misc]taylor:  Taking taylor expansion of (exp (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))))) in x2
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1)) (/ 1 (- x2))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]backup-simplify:  Simplify (- -1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* -1 1) into -1
* [misc]backup-simplify:  Simplify (exp (* (/ 1 (- x2)) (+ (- (/ 1 (- x1)) (/ 1 (- x2))) (- (+ (/ 1 (- x3)) (/ 1 (- x4))) (* (/ 1 (- x3)) (/ 1 (- x4))))))) into (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) x2)))
* [misc]taylor:  Taking taylor expansion of (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) x2))) in x1
* [misc]taylor:  Taking taylor expansion of (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) x2)) in x1
* [misc]taylor:  Taking taylor expansion of -1 in x1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]taylor:  Taking taylor expansion of (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) x2) in x1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3))))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 (* x4 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x4 x3) into (* x4 x3)
* [misc]backup-simplify:  Simplify (/ 1 (* x4 x3)) into (/ 1 (* x4 x3))
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (/ -1 x2) into (/ -1 x2)
* [misc]backup-simplify:  Simplify (* -1 (/ -1 x2)) into (/ 1 x2)
* [misc]backup-simplify:  Simplify (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) x2))) into (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4))))) x2)))
* [misc]taylor:  Taking taylor expansion of (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4))))) x2))) in x3
* [misc]taylor:  Taking taylor expansion of (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4))))) x2)) in x3
* [misc]taylor:  Taking taylor expansion of -1 in x3
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]taylor:  Taking taylor expansion of (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4))))) x2) in x3
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4))))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (+ (/ 1 x4) 0) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (+ 1 (/ 1 x4)) into (+ 1 (/ 1 x4))
* [misc]backup-simplify:  Simplify (- (+ 1 (/ 1 x4))) into (- (+ 1 (/ 1 x4)))
* [misc]backup-simplify:  Simplify (+ 0 (- (+ 1 (/ 1 x4)))) into (- (+ 1 (/ 1 x4)))
* [misc]backup-simplify:  Simplify (/ (- (+ 1 (/ 1 x4))) x2) into (* -1 (/ (+ 1 (/ 1 x4)) x2))
* [misc]backup-simplify:  Simplify (* -1 (* -1 (/ (+ 1 (/ 1 x4)) x2))) into (/ (+ 1 (/ 1 x4)) x2)
* [misc]backup-simplify:  Simplify (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4))))) x2))) into (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) x2)))
* [misc]taylor:  Taking taylor expansion of (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) x2))) in x4
* [misc]taylor:  Taking taylor expansion of (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) x2)) in x4
* [misc]taylor:  Taking taylor expansion of -1 in x4
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]taylor:  Taking taylor expansion of (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) x2) in x4
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3))))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 (* x4 x3))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 (* x4 x3)) in x4
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* 0 x3) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 x3)) into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (+ 1 (/ 1 x3)) into (+ (/ 1 x3) 1)
* [misc]backup-simplify:  Simplify (+ 0 (+ (/ 1 x3) 1)) into (+ (/ 1 x3) 1)
* [misc]backup-simplify:  Simplify (- (+ (/ 1 x3) 1)) into (- (+ (/ 1 x3) 1))
* [misc]backup-simplify:  Simplify (+ 0 (- (+ (/ 1 x3) 1))) into (- (+ (/ 1 x3) 1))
* [misc]backup-simplify:  Simplify (/ (- (+ (/ 1 x3) 1)) x2) into (* -1 (/ (+ (/ 1 x3) 1) x2))
* [misc]backup-simplify:  Simplify (* -1 (* -1 (/ (+ (/ 1 x3) 1) x2))) into (/ (+ (/ 1 x3) 1) x2)
* [misc]backup-simplify:  Simplify (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) x2))) into (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4))))) x2)))
* [misc]backup-simplify:  Simplify (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4))))) x2))) into (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) x2)))
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 x4) (+ (/ 1 x1) (/ 1 (* x4 x3)))))) x2))) into (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4))))) x2)))
* * * * [misc]progress:  [ 2 / 4 ] generating series at (2 1 1 1 2)
* [misc]approximate:  Taking taylor expansion of (exp (* (- (+ x2 x1) (- x3 x4)) x3)) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (exp (* (- (+ x2 x1) (- x3 x4)) x3)) in x4
* [misc]taylor:  Taking taylor expansion of (* (- (+ x2 x1) (- x3 x4)) x3) in x4
* [misc]taylor:  Taking taylor expansion of (- (+ x2 x1) (- x3 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (+ x2 x1) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (+ x2 x1) into (+ x1 x2)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x3 0) into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (+ (+ x1 x2) (- x3)) into (- (+ x1 x2) x3)
* [misc]backup-simplify:  Simplify (* (- (+ x1 x2) x3) x3) into (* (- (+ x1 x2) x3) x3)
* [misc]backup-simplify:  Simplify (exp (* (- (+ x1 x2) x3) x3)) into (exp (* (- (+ x1 x2) x3) x3))
* [misc]taylor:  Taking taylor expansion of (exp (* (- (+ x2 x1) (- x3 x4)) x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* (- (+ x2 x1) (- x3 x4)) x3) in x3
* [misc]taylor:  Taking taylor expansion of (- (+ x2 x1) (- x3 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (+ x2 x1) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ x2 x1) into (+ x1 x2)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ 0 (- x4)) into (- x4)
* [misc]backup-simplify:  Simplify (- (- x4)) into x4
* [misc]backup-simplify:  Simplify (+ (+ x1 x2) x4) into (+ x1 (+ x2 x4))
* [misc]backup-simplify:  Simplify (* (+ x1 (+ x2 x4)) 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ (* (+ x1 (+ x2 x4)) 1) (* -1 0)) into (+ x1 (+ x2 x4))
* [misc]backup-simplify:  Simplify (exp 0) into 1
* [misc]taylor:  Taking taylor expansion of (exp (* (- (+ x2 x1) (- x3 x4)) x3)) in x1
* [misc]taylor:  Taking taylor expansion of (* (- (+ x2 x1) (- x3 x4)) x3) in x1
* [misc]taylor:  Taking taylor expansion of (- (+ x2 x1) (- x3 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (+ x2 x1) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (+ x2 0) into x2
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ x3 (- x4)) into (- x3 x4)
* [misc]backup-simplify:  Simplify (- (- x3 x4)) into (- x4 x3)
* [misc]backup-simplify:  Simplify (+ x2 (- x4 x3)) into (- (+ x2 x4) x3)
* [misc]backup-simplify:  Simplify (* (- (+ x2 x4) x3) x3) into (* (- (+ x2 x4) x3) x3)
* [misc]backup-simplify:  Simplify (exp (* (- (+ x2 x4) x3) x3)) into (exp (* (- (+ x2 x4) x3) x3))
* [misc]taylor:  Taking taylor expansion of (exp (* (- (+ x2 x1) (- x3 x4)) x3)) in x2
* [misc]taylor:  Taking taylor expansion of (* (- (+ x2 x1) (- x3 x4)) x3) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ x2 x1) (- x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x2 x1) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (+ 0 x1) into x1
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ x3 (- x4)) into (- x3 x4)
* [misc]backup-simplify:  Simplify (- (- x3 x4)) into (- x4 x3)
* [misc]backup-simplify:  Simplify (+ x1 (- x4 x3)) into (- (+ x1 x4) x3)
* [misc]backup-simplify:  Simplify (* (- (+ x1 x4) x3) x3) into (* x3 (- (+ x1 x4) x3))
* [misc]backup-simplify:  Simplify (exp (* x3 (- (+ x1 x4) x3))) into (exp (* x3 (- (+ x1 x4) x3)))
* [misc]taylor:  Taking taylor expansion of (exp (* (- (+ x2 x1) (- x3 x4)) x3)) in x2
* [misc]taylor:  Taking taylor expansion of (* (- (+ x2 x1) (- x3 x4)) x3) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ x2 x1) (- x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x2 x1) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (+ 0 x1) into x1
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ x3 (- x4)) into (- x3 x4)
* [misc]backup-simplify:  Simplify (- (- x3 x4)) into (- x4 x3)
* [misc]backup-simplify:  Simplify (+ x1 (- x4 x3)) into (- (+ x1 x4) x3)
* [misc]backup-simplify:  Simplify (* (- (+ x1 x4) x3) x3) into (* x3 (- (+ x1 x4) x3))
* [misc]backup-simplify:  Simplify (exp (* x3 (- (+ x1 x4) x3))) into (exp (* x3 (- (+ x1 x4) x3)))
* [misc]taylor:  Taking taylor expansion of (exp (* x3 (- (+ x1 x4) x3))) in x1
* [misc]taylor:  Taking taylor expansion of (* x3 (- (+ x1 x4) x3)) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (- (+ x1 x4) x3) in x1
* [misc]taylor:  Taking taylor expansion of (+ x1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (+ 0 x4) into x4
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (+ x4 (- x3)) into (- x4 x3)
* [misc]backup-simplify:  Simplify (* x3 (- x4 x3)) into (* x3 (- x4 x3))
* [misc]backup-simplify:  Simplify (exp (* x3 (- x4 x3))) into (exp (* x3 (- x4 x3)))
* [misc]taylor:  Taking taylor expansion of (exp (* x3 (- x4 x3))) in x3
* [misc]taylor:  Taking taylor expansion of (* x3 (- x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ (* 0 -1) (* 1 x4)) into x4
* [misc]backup-simplify:  Simplify (exp 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ (* (- (+ x1 x4) x3) 0) (* 1 x3)) into x3
* [misc]backup-simplify:  Simplify (* (exp (* x3 (- (+ x1 x4) x3))) (+ (* (/ (pow x3 1) 1)))) into (* (exp (* x3 (- (+ x1 x4) x3))) x3)
* [misc]taylor:  Taking taylor expansion of (* (exp (* x3 (- (+ x1 x4) x3))) x3) in x1
* [misc]taylor:  Taking taylor expansion of (exp (* x3 (- (+ x1 x4) x3))) in x1
* [misc]taylor:  Taking taylor expansion of (* x3 (- (+ x1 x4) x3)) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (- (+ x1 x4) x3) in x1
* [misc]taylor:  Taking taylor expansion of (+ x1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (+ 0 x4) into x4
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (+ x4 (- x3)) into (- x4 x3)
* [misc]backup-simplify:  Simplify (* x3 (- x4 x3)) into (* x3 (- x4 x3))
* [misc]backup-simplify:  Simplify (exp (* x3 (- x4 x3))) into (exp (* x3 (- x4 x3)))
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* (exp (* x3 (- x4 x3))) x3) into (* x3 (exp (* x3 (- x4 x3))))
* [misc]taylor:  Taking taylor expansion of (* x3 (exp (* x3 (- x4 x3)))) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (exp (* x3 (- x4 x3))) in x3
* [misc]taylor:  Taking taylor expansion of (* x3 (- x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ (* 0 -1) (* 1 x4)) into x4
* [misc]backup-simplify:  Simplify (exp 0) into 1
* [misc]backup-simplify:  Simplify (* 0 1) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ (* x3 1) (* 0 (- x4 x3))) into x3
* [misc]backup-simplify:  Simplify (* (exp (* x3 (- x4 x3))) (+ (* (/ (pow x3 1) 1)))) into (* x3 (exp (* x3 (- x4 x3))))
* [misc]taylor:  Taking taylor expansion of (* x3 (exp (* x3 (- x4 x3)))) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (exp (* x3 (- x4 x3))) in x3
* [misc]taylor:  Taking taylor expansion of (* x3 (- x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ (* 0 -1) (* 1 x4)) into x4
* [misc]backup-simplify:  Simplify (exp 0) into 1
* [misc]backup-simplify:  Simplify (* 0 1) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp 0) (+ (* (/ (pow x4 1) 1)))) into x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (+ x1 x4) x3) 0) (+ (* 1 0) (* 0 x3))) into 0
* [misc]backup-simplify:  Simplify (* (exp (* x3 (- (+ x1 x4) x3))) (+ (* (/ (pow x3 2) 2)) (* (/ (pow 0 1) 1)))) into (* 1/2 (* (exp (* x3 (- (+ x1 x4) x3))) (sqr x3)))
* [misc]taylor:  Taking taylor expansion of (* 1/2 (* (exp (* x3 (- (+ x1 x4) x3))) (sqr x3))) in x1
* [misc]taylor:  Taking taylor expansion of 1/2 in x1
* [misc]backup-simplify:  Simplify 1/2 into 1/2
* [misc]taylor:  Taking taylor expansion of (* (exp (* x3 (- (+ x1 x4) x3))) (sqr x3)) in x1
* [misc]taylor:  Taking taylor expansion of (exp (* x3 (- (+ x1 x4) x3))) in x1
* [misc]taylor:  Taking taylor expansion of (* x3 (- (+ x1 x4) x3)) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (- (+ x1 x4) x3) in x1
* [misc]taylor:  Taking taylor expansion of (+ x1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (+ 0 x4) into x4
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (+ x4 (- x3)) into (- x4 x3)
* [misc]backup-simplify:  Simplify (* x3 (- x4 x3)) into (* x3 (- x4 x3))
* [misc]backup-simplify:  Simplify (exp (* x3 (- x4 x3))) into (exp (* x3 (- x4 x3)))
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (* x3 x3) into (sqr x3)
* [misc]backup-simplify:  Simplify (* (exp (* x3 (- x4 x3))) (sqr x3)) into (* (sqr x3) (exp (* x3 (- x4 x3))))
* [misc]backup-simplify:  Simplify (* 1/2 (* (sqr x3) (exp (* x3 (- x4 x3))))) into (* 1/2 (* (sqr x3) (exp (* x3 (- x4 x3)))))
* [misc]taylor:  Taking taylor expansion of (* 1/2 (* (sqr x3) (exp (* x3 (- x4 x3))))) in x3
* [misc]taylor:  Taking taylor expansion of 1/2 in x3
* [misc]backup-simplify:  Simplify 1/2 into 1/2
* [misc]taylor:  Taking taylor expansion of (* (sqr x3) (exp (* x3 (- x4 x3)))) in x3
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (exp (* x3 (- x4 x3))) in x3
* [misc]taylor:  Taking taylor expansion of (* x3 (- x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ (* 0 -1) (* 1 x4)) into x4
* [misc]backup-simplify:  Simplify (exp 0) into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* 0 1) into 0
* [misc]backup-simplify:  Simplify (* 1/2 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ (* x3 1) (* 0 (- x4 x3))) into x3
* [misc]backup-simplify:  Simplify (* (exp (* x3 (- x4 x3))) (+ (* (/ (pow x3 1) 1)))) into (* x3 (exp (* x3 (- x4 x3))))
* [misc]backup-simplify:  Simplify (+ (* (exp (* x3 (- x4 x3))) 0) (* (* x3 (exp (* x3 (- x4 x3)))) x3)) into (* (sqr x3) (exp (* x3 (- x4 x3))))
* [misc]taylor:  Taking taylor expansion of (* (sqr x3) (exp (* x3 (- x4 x3)))) in x3
* [misc]taylor:  Taking taylor expansion of (sqr x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (exp (* x3 (- x4 x3))) in x3
* [misc]taylor:  Taking taylor expansion of (* x3 (- x4 x3)) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x4 0) into x4
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ (* 0 -1) (* 1 x4)) into x4
* [misc]backup-simplify:  Simplify (exp 0) into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* 0 1) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]approximate:  Taking taylor expansion of (exp (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (exp (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) in x4
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x1)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (- -1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (* 1 (/ 1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (exp (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) into (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3))
* [misc]taylor:  Taking taylor expansion of (exp (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) in x3
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x1)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (* -1 1) into -1
* [misc]backup-simplify:  Simplify (exp (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) into (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3))
* [misc]taylor:  Taking taylor expansion of (exp (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* 1 (/ 1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (exp (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) into (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3))
* [misc]taylor:  Taking taylor expansion of (exp (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) in x2
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* 1 (/ 1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (exp (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) into (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3))
* [misc]taylor:  Taking taylor expansion of (exp (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) in x2
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* 1 (/ 1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (exp (* (- (+ (/ 1 x2) (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) (/ 1 x3))) into (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3))
* [misc]taylor:  Taking taylor expansion of (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3)) in x1
* [misc]taylor:  Taking taylor expansion of (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3) in x1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3)) into (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3))
* [misc]taylor:  Taking taylor expansion of (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3)) in x3
* [misc]taylor:  Taking taylor expansion of (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3) in x3
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (/ -1 1) into -1
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3)) into (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3))
* [misc]taylor:  Taking taylor expansion of (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3)) in x4
* [misc]taylor:  Taking taylor expansion of (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3) in x4
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3)) into (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3))
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3)) into (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3))
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3)) into (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3))
* [misc]approximate:  Taking taylor expansion of (exp (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (exp (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) in x4
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3))) in x4
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x1))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x4
* [misc]taylor:  Taking taylor expansion of (- x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x4
* [misc]taylor:  Taking taylor expansion of (- x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]backup-simplify:  Simplify (- -1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (* -1 (/ -1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (exp (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) into (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3)))
* [misc]taylor:  Taking taylor expansion of (exp (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) in x3
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3))) in x3
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x1))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x3
* [misc]taylor:  Taking taylor expansion of (- x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x3
* [misc]taylor:  Taking taylor expansion of (- x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (- -1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (* 1 -1) into -1
* [misc]backup-simplify:  Simplify (exp (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) into (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3)))
* [misc]taylor:  Taking taylor expansion of (exp (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) in x1
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3))) in x1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* -1 (/ -1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (exp (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) into (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3)))
* [misc]taylor:  Taking taylor expansion of (exp (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) in x2
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3))) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* -1 (/ -1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (exp (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) into (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3)))
* [misc]taylor:  Taking taylor expansion of (exp (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) in x2
* [misc]taylor:  Taking taylor expansion of (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3))) in x2
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* -1 (/ -1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (exp (* (- (+ (/ 1 (- x2)) (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) (/ 1 (- x3)))) into (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3)))
* [misc]taylor:  Taking taylor expansion of (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3))) in x1
* [misc]taylor:  Taking taylor expansion of (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3)) in x1
* [misc]taylor:  Taking taylor expansion of -1 in x1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]taylor:  Taking taylor expansion of (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3) in x1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (/ -1 x3) into (/ -1 x3)
* [misc]backup-simplify:  Simplify (* -1 (/ -1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3))) into (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3)))
* [misc]taylor:  Taking taylor expansion of (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3))) in x3
* [misc]taylor:  Taking taylor expansion of (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3)) in x3
* [misc]taylor:  Taking taylor expansion of -1 in x3
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]taylor:  Taking taylor expansion of (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3) in x3
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (* -1 1) into -1
* [misc]backup-simplify:  Simplify (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3))) into (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3)))
* [misc]taylor:  Taking taylor expansion of (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3))) in x4
* [misc]taylor:  Taking taylor expansion of (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3)) in x4
* [misc]taylor:  Taking taylor expansion of -1 in x4
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]taylor:  Taking taylor expansion of (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3) in x4
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (/ -1 x3) into (/ -1 x3)
* [misc]backup-simplify:  Simplify (* -1 (/ -1 x3)) into (/ 1 x3)
* [misc]backup-simplify:  Simplify (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3))) into (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3)))
* [misc]backup-simplify:  Simplify (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3))) into (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3)))
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3))) into (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3)))
* * * * [misc]progress:  [ 3 / 4 ] generating series at (2 1 1 2 2)
* [misc]approximate:  Taking taylor expansion of (exp (* (+ x2 x3) x1)) in (x2 x3 x1) around 0
* [misc]taylor:  Taking taylor expansion of (exp (* (+ x2 x3) x1)) in x1
* [misc]taylor:  Taking taylor expansion of (* (+ x2 x3) x1) in x1
* [misc]taylor:  Taking taylor expansion of (+ x2 x3) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ x2 x3) into (+ x2 x3)
* [misc]backup-simplify:  Simplify (* (+ x2 x3) 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (+ x2 x3) 1) (* 0 0)) into (+ x2 x3)
* [misc]backup-simplify:  Simplify (exp 0) into 1
* [misc]taylor:  Taking taylor expansion of (exp (* (+ x2 x3) x1)) in x3
* [misc]taylor:  Taking taylor expansion of (* (+ x2 x3) x1) in x3
* [misc]taylor:  Taking taylor expansion of (+ x2 x3) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (+ x2 0) into x2
* [misc]backup-simplify:  Simplify (* x2 x1) into (* x1 x2)
* [misc]backup-simplify:  Simplify (exp (* x1 x2)) into (exp (* x1 x2))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ x2 x3) x1)) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ x2 x3) x1) in x2
* [misc]taylor:  Taking taylor expansion of (+ x2 x3) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (+ 0 x3) into x3
* [misc]backup-simplify:  Simplify (* x3 x1) into (* x1 x3)
* [misc]backup-simplify:  Simplify (exp (* x1 x3)) into (exp (* x1 x3))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ x2 x3) x1)) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ x2 x3) x1) in x2
* [misc]taylor:  Taking taylor expansion of (+ x2 x3) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (+ 0 x3) into x3
* [misc]backup-simplify:  Simplify (* x3 x1) into (* x1 x3)
* [misc]backup-simplify:  Simplify (exp (* x1 x3)) into (exp (* x1 x3))
* [misc]taylor:  Taking taylor expansion of (exp (* x1 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x1 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x1 1) (* 0 0)) into x1
* [misc]backup-simplify:  Simplify (exp 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ (* x3 0) (* 1 x1)) into x1
* [misc]backup-simplify:  Simplify (* (exp (* x1 x3)) (+ (* (/ (pow x1 1) 1)))) into (* (exp (* x1 x3)) x1)
* [misc]taylor:  Taking taylor expansion of (* (exp (* x1 x3)) x1) in x3
* [misc]taylor:  Taking taylor expansion of (exp (* x1 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x1 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x1 1) (* 0 0)) into x1
* [misc]backup-simplify:  Simplify (exp 0) into 1
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (* 1 x1) into x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp 0) (+ (* (/ (pow x1 1) 1)))) into x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x3 0) (+ (* 1 0) (* 0 x1))) into 0
* [misc]backup-simplify:  Simplify (* (exp (* x1 x3)) (+ (* (/ (pow x1 2) 2)) (* (/ (pow 0 1) 1)))) into (* 1/2 (* (exp (* x1 x3)) (sqr x1)))
* [misc]taylor:  Taking taylor expansion of (* 1/2 (* (exp (* x1 x3)) (sqr x1))) in x3
* [misc]taylor:  Taking taylor expansion of 1/2 in x3
* [misc]backup-simplify:  Simplify 1/2 into 1/2
* [misc]taylor:  Taking taylor expansion of (* (exp (* x1 x3)) (sqr x1)) in x3
* [misc]taylor:  Taking taylor expansion of (exp (* x1 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (* x1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* x1 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x1 1) (* 0 0)) into x1
* [misc]backup-simplify:  Simplify (exp 0) into 1
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (* x1 x1) into (sqr x1)
* [misc]backup-simplify:  Simplify (* 1 (sqr x1)) into (sqr x1)
* [misc]backup-simplify:  Simplify (* 1/2 (sqr x1)) into (* 1/2 (sqr x1))
* [misc]taylor:  Taking taylor expansion of (* 1/2 (sqr x1)) in x1
* [misc]taylor:  Taking taylor expansion of 1/2 in x1
* [misc]backup-simplify:  Simplify 1/2 into 1/2
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* 1/2 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp 0) (+ (* (/ (pow x1 1) 1)))) into x1
* [misc]backup-simplify:  Simplify (+ (* 1 0) (* x1 x1)) into (sqr x1)
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* x1 0) (+ (* 0 1) (* 0 0))) into 0
* [misc]backup-simplify:  Simplify (* (exp 0) (+ (* (/ (pow x1 2) 2)) (* (/ (pow 0 1) 1)))) into (* 1/2 (sqr x1))
* [misc]taylor:  Taking taylor expansion of (* 1/2 (sqr x1)) in x1
* [misc]taylor:  Taking taylor expansion of 1/2 in x1
* [misc]backup-simplify:  Simplify 1/2 into 1/2
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* 1/2 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]approximate:  Taking taylor expansion of (exp (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1))) in (x2 x3 x1) around 0
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1))) in x1
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (+ (/ 1 x2) (/ 1 x3)) into (+ (/ 1 x2) (/ 1 x3))
* [misc]backup-simplify:  Simplify (* (+ (/ 1 x2) (/ 1 x3)) 1) into (+ (/ 1 x2) (/ 1 x3))
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1))) into (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1))) in x3
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1)) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (* 1 (/ 1 x1)) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1))) into (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* 1 (/ 1 x1)) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1))) into (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* 1 (/ 1 x1)) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 x2) (/ 1 x3)) (/ 1 x1))) into (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))
* [misc]taylor:  Taking taylor expansion of (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1)) in x3
* [misc]taylor:  Taking taylor expansion of (/ (+ (/ 1 x2) (/ 1 x3)) x1) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1)) into (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))
* [misc]taylor:  Taking taylor expansion of (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ (+ (/ 1 x2) (/ 1 x3)) x1) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ (/ 1 x2) (/ 1 x3)) into (+ (/ 1 x2) (/ 1 x3))
* [misc]backup-simplify:  Simplify (/ (+ (/ 1 x2) (/ 1 x3)) 1) into (+ (/ 1 x2) (/ 1 x3))
* [misc]backup-simplify:  Simplify (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1)) into (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))
* [misc]backup-simplify:  Simplify (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1)) into (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1)) into (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))
* [misc]approximate:  Taking taylor expansion of (exp (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1)))) in (x2 x3 x1) around 0
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1)))) in x1
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x3))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]backup-simplify:  Simplify (+ (/ -1 x2) (/ -1 x3)) into (- (+ (/ 1 x2) (/ 1 x3)))
* [misc]backup-simplify:  Simplify (* (- (+ (/ 1 x2) (/ 1 x3))) -1) into (+ (/ 1 x2) (/ 1 x3))
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1)))) into (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1)))) in x3
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x3))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x3
* [misc]taylor:  Taking taylor expansion of (- x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x3
* [misc]taylor:  Taking taylor expansion of (- x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (* -1 (/ -1 x1)) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1)))) into (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x3))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* -1 (/ -1 x1)) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1)))) into (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (/ 1 (- x3))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* -1 (/ -1 x1)) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 (- x2)) (/ 1 (- x3))) (/ 1 (- x1)))) into (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))
* [misc]taylor:  Taking taylor expansion of (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1)) in x3
* [misc]taylor:  Taking taylor expansion of (/ (+ (/ 1 x2) (/ 1 x3)) x1) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1)) into (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))
* [misc]taylor:  Taking taylor expansion of (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ (+ (/ 1 x2) (/ 1 x3)) x1) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ (/ 1 x2) (/ 1 x3)) into (+ (/ 1 x2) (/ 1 x3))
* [misc]backup-simplify:  Simplify (/ (+ (/ 1 x2) (/ 1 x3)) 1) into (+ (/ 1 x2) (/ 1 x3))
* [misc]backup-simplify:  Simplify (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1)) into (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))
* [misc]backup-simplify:  Simplify (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1)) into (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1)) into (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))
* * * * [misc]progress:  [ 4 / 4 ] generating series at (2 1 1 1 1)
* [misc]approximate:  Taking taylor expansion of (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) in x4
* [misc]taylor:  Taking taylor expansion of (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) in x4
* [misc]taylor:  Taking taylor expansion of (+ x2 (+ (- x1) (- x3 x4))) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1) (- x3 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x4 x1) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ x3 0) into x3
* [misc]backup-simplify:  Simplify (+ (- x1) x3) into (- x3 x1)
* [misc]backup-simplify:  Simplify (+ x2 (- x3 x1)) into (- (+ x2 x3) x1)
* [misc]backup-simplify:  Simplify (* 0 x1) into 0
* [misc]backup-simplify:  Simplify (* (- (+ x2 x3) x1) 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 x1)) into x1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ (* (- (+ x2 x3) x1) x1) (* -1 0)) into (- (+ (* x1 x2) (* x1 x3)) (sqr x1))
* [misc]backup-simplify:  Simplify (exp 0) into 1
* [misc]taylor:  Taking taylor expansion of (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) in x3
* [misc]taylor:  Taking taylor expansion of (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) in x3
* [misc]taylor:  Taking taylor expansion of (+ x2 (+ (- x1) (- x3 x4))) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1) (- x3 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x4 x1) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ 0 (- x4)) into (- x4)
* [misc]backup-simplify:  Simplify (+ (- x1) (- x4)) into (- (+ x1 x4))
* [misc]backup-simplify:  Simplify (+ x2 (- (+ x1 x4))) into (- x2 (+ x1 x4))
* [misc]backup-simplify:  Simplify (* x4 x1) into (* x1 x4)
* [misc]backup-simplify:  Simplify (* (- x2 (+ x1 x4)) (* x1 x4)) into (* x1 (* (- x2 (+ x1 x4)) x4))
* [misc]backup-simplify:  Simplify (exp (* x1 (* (- x2 (+ x1 x4)) x4))) into (exp (* x1 (* (- x2 (+ x1 x4)) x4)))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) in x1
* [misc]taylor:  Taking taylor expansion of (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (+ x2 (+ (- x1) (- x3 x4))) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of (+ (- x1) (- x3 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x4 x1) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ x3 (- x4)) into (- x3 x4)
* [misc]backup-simplify:  Simplify (+ 0 (- x3 x4)) into (- x3 x4)
* [misc]backup-simplify:  Simplify (+ x2 (- x3 x4)) into (- (+ x2 x3) x4)
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (* (- (+ x2 x3) x4) 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x4 1) (* 0 0)) into x4
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ (* (- (+ x2 x3) x4) x4) (* -1 0)) into (- (+ (* x2 x4) (* x4 x3)) (sqr x4))
* [misc]backup-simplify:  Simplify (exp 0) into 1
* [misc]taylor:  Taking taylor expansion of (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x2 (+ (- x1) (- x3 x4))) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (- x1) (- x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x4 x1) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ x3 (- x4)) into (- x3 x4)
* [misc]backup-simplify:  Simplify (+ (- x1) (- x3 x4)) into (- x3 (+ x1 x4))
* [misc]backup-simplify:  Simplify (+ 0 (- x3 (+ x1 x4))) into (- x3 (+ x1 x4))
* [misc]backup-simplify:  Simplify (* x4 x1) into (* x1 x4)
* [misc]backup-simplify:  Simplify (* (- x3 (+ x1 x4)) (* x1 x4)) into (* x1 (* x4 (- x3 (+ x1 x4))))
* [misc]backup-simplify:  Simplify (exp (* x1 (* x4 (- x3 (+ x1 x4))))) into (exp (* x1 (* x4 (- x3 (+ x1 x4)))))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (+ x2 (+ (- x1) (- x3 x4))) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (+ (- x1) (- x3 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- x3 x4) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (* x4 x1) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ x3 (- x4)) into (- x3 x4)
* [misc]backup-simplify:  Simplify (+ (- x1) (- x3 x4)) into (- x3 (+ x1 x4))
* [misc]backup-simplify:  Simplify (+ 0 (- x3 (+ x1 x4))) into (- x3 (+ x1 x4))
* [misc]backup-simplify:  Simplify (* x4 x1) into (* x1 x4)
* [misc]backup-simplify:  Simplify (* (- x3 (+ x1 x4)) (* x1 x4)) into (* x1 (* x4 (- x3 (+ x1 x4))))
* [misc]backup-simplify:  Simplify (exp (* x1 (* x4 (- x3 (+ x1 x4))))) into (exp (* x1 (* x4 (- x3 (+ x1 x4)))))
* [misc]taylor:  Taking taylor expansion of (exp (* x1 (* x4 (- x3 (+ x1 x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 (* x4 (- x3 (+ x1 x4)))) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x4 (- x3 (+ x1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (- x3 (+ x1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (+ x1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (+ 0 x4) into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ x3 (- x4)) into (- x3 x4)
* [misc]backup-simplify:  Simplify (* x4 (- x3 x4)) into (* (- x3 x4) x4)
* [misc]backup-simplify:  Simplify (* 0 (* (- x3 x4) x4)) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ (* x4 -1) (* 0 (- x3 x4))) into (- x4)
* [misc]backup-simplify:  Simplify (+ (* 0 (- x4)) (* 1 (* (- x3 x4) x4))) into (- (* x4 x3) (sqr x4))
* [misc]backup-simplify:  Simplify (exp 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x3
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of 1 in x4
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ (* x4 0) (* 0 x1)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ (* (- x3 (+ x1 x4)) 0) (* 1 (* x1 x4))) into (* x1 x4)
* [misc]backup-simplify:  Simplify (* (exp (* x1 (* x4 (- x3 (+ x1 x4))))) (+ (* (/ (pow (* x1 x4) 1) 1)))) into (* x1 (* (exp (* x1 (* x4 (- x3 (+ x1 x4))))) x4))
* [misc]taylor:  Taking taylor expansion of (* x1 (* (exp (* x1 (* x4 (- x3 (+ x1 x4))))) x4)) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* (exp (* x1 (* x4 (- x3 (+ x1 x4))))) x4) in x1
* [misc]taylor:  Taking taylor expansion of (exp (* x1 (* x4 (- x3 (+ x1 x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 (* x4 (- x3 (+ x1 x4)))) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x4 (- x3 (+ x1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (- x3 (+ x1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (+ x1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (+ 0 x4) into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ x3 (- x4)) into (- x3 x4)
* [misc]backup-simplify:  Simplify (* x4 (- x3 x4)) into (* (- x3 x4) x4)
* [misc]backup-simplify:  Simplify (* 0 (* (- x3 x4) x4)) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ (* x4 -1) (* 0 (- x3 x4))) into (- x4)
* [misc]backup-simplify:  Simplify (+ (* 0 (- x4)) (* 1 (* (- x3 x4) x4))) into (- (* x4 x3) (sqr x4))
* [misc]backup-simplify:  Simplify (exp 0) into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* 1 x4) into x4
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp 0) (+ (* (/ (pow (- (* x4 x3) (sqr x4)) 1) 1)))) into (- (* x4 x3) (sqr x4))
* [misc]taylor:  Taking taylor expansion of (- (* x4 x3) (sqr x4)) in x3
* [misc]taylor:  Taking taylor expansion of (* x4 x3) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* x4 0) into 0
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (- (sqr x4)) into (- (sqr x4))
* [misc]backup-simplify:  Simplify (+ 0 (- (sqr x4))) into (- (sqr x4))
* [misc]taylor:  Taking taylor expansion of (- (sqr x4)) in x4
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* x4 0) (+ (* 0 0) (* 0 x1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- x3 (+ x1 x4)) 0) (+ (* 1 0) (* 0 (* x1 x4)))) into 0
* [misc]backup-simplify:  Simplify (* (exp (* x1 (* x4 (- x3 (+ x1 x4))))) (+ (* (/ (pow (* x1 x4) 2) 2)) (* (/ (pow 0 1) 1)))) into (* 1/2 (* (sqr x1) (* (exp (* x1 (* x4 (- x3 (+ x1 x4))))) (sqr x4))))
* [misc]taylor:  Taking taylor expansion of (* 1/2 (* (sqr x1) (* (exp (* x1 (* x4 (- x3 (+ x1 x4))))) (sqr x4)))) in x1
* [misc]taylor:  Taking taylor expansion of 1/2 in x1
* [misc]backup-simplify:  Simplify 1/2 into 1/2
* [misc]taylor:  Taking taylor expansion of (* (sqr x1) (* (exp (* x1 (* x4 (- x3 (+ x1 x4))))) (sqr x4))) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* (exp (* x1 (* x4 (- x3 (+ x1 x4))))) (sqr x4)) in x1
* [misc]taylor:  Taking taylor expansion of (exp (* x1 (* x4 (- x3 (+ x1 x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (* x1 (* x4 (- x3 (+ x1 x4)))) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x4 (- x3 (+ x1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of (- x3 (+ x1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]taylor:  Taking taylor expansion of (+ x1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (+ 0 x4) into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (+ x3 (- x4)) into (- x3 x4)
* [misc]backup-simplify:  Simplify (* x4 (- x3 x4)) into (* (- x3 x4) x4)
* [misc]backup-simplify:  Simplify (* 0 (* (- x3 x4) x4)) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ (* x4 -1) (* 0 (- x3 x4))) into (- x4)
* [misc]backup-simplify:  Simplify (+ (* 0 (- x4)) (* 1 (* (- x3 x4) x4))) into (- (* x4 x3) (sqr x4))
* [misc]backup-simplify:  Simplify (exp 0) into 1
* [misc]taylor:  Taking taylor expansion of (sqr x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* x4 x4) into (sqr x4)
* [misc]backup-simplify:  Simplify (* 1 (sqr x4)) into (sqr x4)
* [misc]backup-simplify:  Simplify (* 0 (sqr x4)) into 0
* [misc]backup-simplify:  Simplify (* 1/2 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp 0) (+ (* (/ (pow (- (* x4 x3) (sqr x4)) 1) 1)))) into (- (* x4 x3) (sqr x4))
* [misc]backup-simplify:  Simplify (+ (* 1 0) (* (- (* x4 x3) (sqr x4)) x4)) into (- (* (sqr x4) x3) (pow x4 3))
* [misc]backup-simplify:  Simplify (+ (* 0 (- (* (sqr x4) x3) (pow x4 3))) (* 1 x4)) into x4
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]approximate:  Taking taylor expansion of (exp (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1)))) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1)))) in x4
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x4) (/ 1 x1)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (* 1 (/ 1 x1)) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (* -1 (/ 1 x1)) into (/ -1 x1)
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1)))) into (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1)))) in x3
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x4) (/ 1 x1)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (* (/ 1 x4) (/ 1 x1)) into (/ 1 (* x1 x4))
* [misc]backup-simplify:  Simplify (* 1 (/ 1 (* x1 x4))) into (/ 1 (* x1 x4))
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1)))) into (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1)))) in x1
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x4) (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (* (/ 1 x4) 1) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (* -1 (/ 1 x4)) into (/ -1 x4)
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1)))) into (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x4) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* (/ 1 x4) (/ 1 x1)) into (/ 1 (* x1 x4))
* [misc]backup-simplify:  Simplify (* 1 (/ 1 (* x1 x4))) into (/ 1 (* x1 x4))
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1)))) into (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x3) (/ 1 x4)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x4) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* (/ 1 x4) (/ 1 x1)) into (/ 1 (* x1 x4))
* [misc]backup-simplify:  Simplify (* 1 (/ 1 (* x1 x4))) into (/ 1 (* x1 x4))
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 x2) (+ (- (/ 1 x1)) (- (/ 1 x3) (/ 1 x4)))) (* (/ 1 x4) (/ 1 x1)))) into (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* x1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 x4)) into x4
* [misc]backup-simplify:  Simplify (/ -1 x4) into (/ -1 x4)
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4))) into (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (* x1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* x1 x4) into (* x1 x4)
* [misc]backup-simplify:  Simplify (/ 1 (* x1 x4)) into (/ 1 (* x1 x4))
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4))) into (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* x1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (* x1 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x1 1) (* 0 0)) into x1
* [misc]backup-simplify:  Simplify (/ -1 x1) into (/ -1 x1)
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4))) into (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4)))
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4))) into (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4))) into (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4)))
* [misc]approximate:  Taking taylor expansion of (exp (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1))))) in (x2 x1 x3 x4) around 0
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1))))) in x4
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x4
* [misc]taylor:  Taking taylor expansion of (- x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x4
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x4
* [misc]taylor:  Taking taylor expansion of (- x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x4
* [misc]taylor:  Taking taylor expansion of (- x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x4)) (/ 1 (- x1))) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x4
* [misc]taylor:  Taking taylor expansion of (- x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]backup-simplify:  Simplify (- -1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (* -1 (/ -1 x1)) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (* 1 (/ 1 x1)) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1))))) into (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1))))) in x3
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x3
* [misc]taylor:  Taking taylor expansion of (- x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x3
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x3
* [misc]taylor:  Taking taylor expansion of (- x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x3
* [misc]taylor:  Taking taylor expansion of (- x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x4)) (/ 1 (- x1))) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x3
* [misc]taylor:  Taking taylor expansion of (- x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (* (/ -1 x4) (/ -1 x1)) into (/ 1 (* x1 x4))
* [misc]backup-simplify:  Simplify (* -1 (/ 1 (* x1 x4))) into (/ -1 (* x1 x4))
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1))))) into (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1))))) in x1
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x1
* [misc]taylor:  Taking taylor expansion of (- x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x4)) (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]backup-simplify:  Simplify (- -1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (* (/ -1 x4) -1) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (* 1 (/ 1 x4)) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1))))) into (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1))))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x4)) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* (/ -1 x4) (/ -1 x1)) into (/ 1 (* x1 x4))
* [misc]backup-simplify:  Simplify (* -1 (/ 1 (* x1 x4))) into (/ -1 (* x1 x4))
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1))))) into (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of (exp (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1))))) in x2
* [misc]taylor:  Taking taylor expansion of (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4)))) in x2
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x3)) (/ 1 (- x4))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x3)) in x2
* [misc]taylor:  Taking taylor expansion of (- x3) in x2
* [misc]taylor:  Taking taylor expansion of x3 in x2
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (- x3) into (- x3)
* [misc]backup-simplify:  Simplify (/ 1 (- x3)) into (/ -1 x3)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x4)) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x4)) in x2
* [misc]taylor:  Taking taylor expansion of (- x4) in x2
* [misc]taylor:  Taking taylor expansion of x4 in x2
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (- x4) into (- x4)
* [misc]backup-simplify:  Simplify (/ 1 (- x4)) into (/ -1 x4)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* (/ -1 x4) (/ -1 x1)) into (/ 1 (* x1 x4))
* [misc]backup-simplify:  Simplify (* -1 (/ 1 (* x1 x4))) into (/ -1 (* x1 x4))
* [misc]backup-simplify:  Simplify (exp (* (+ (/ 1 (- x2)) (+ (- (/ 1 (- x1))) (- (/ 1 (- x3)) (/ 1 (- x4))))) (* (/ 1 (- x4)) (/ 1 (- x1))))) into (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4))) in x1
* [misc]taylor:  Taking taylor expansion of (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) in x1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x1
* [misc]taylor:  Taking taylor expansion of x3 in x1
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (* x1 x4) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x4 in x1
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* 0 x4) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 x4)) into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4))) into (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4))) in x3
* [misc]taylor:  Taking taylor expansion of (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) in x3
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (/ 1 x4) into (/ 1 x4)
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x3
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x3
* [misc]taylor:  Taking taylor expansion of x2 in x3
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x3
* [misc]taylor:  Taking taylor expansion of x3 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* x1 x4) in x3
* [misc]taylor:  Taking taylor expansion of x1 in x3
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x4 in x3
* [misc]backup-simplify:  Simplify x4 into x4
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (+ 0 -1) into -1
* [misc]backup-simplify:  Simplify (* x1 x4) into (* x1 x4)
* [misc]backup-simplify:  Simplify (/ -1 (* x1 x4)) into (/ -1 (* x1 x4))
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4))) into (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4))) in x4
* [misc]taylor:  Taking taylor expansion of (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) in x4
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x1) (/ 1 x4)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (/ 1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (+ (/ 1 x2) (/ 1 x3)) in x4
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x4
* [misc]taylor:  Taking taylor expansion of x2 in x4
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x3) in x4
* [misc]taylor:  Taking taylor expansion of x3 in x4
* [misc]backup-simplify:  Simplify x3 into x3
* [misc]backup-simplify:  Simplify (/ 1 x3) into (/ 1 x3)
* [misc]taylor:  Taking taylor expansion of (* x1 x4) in x4
* [misc]taylor:  Taking taylor expansion of x1 in x4
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of x4 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* x1 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x1 1) (* 0 0)) into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4))) into (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4)))
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4))) into (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4)))
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x3
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in x4
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4))) into (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4)))
* * * [misc]progress:  generating rewritten candidates
* * * * [misc]progress:  [ 1 / 4 ] rewriting at (2 1 1 2 1)
* * * * [misc]progress:  [ 2 / 4 ] rewriting at (2 1 1 1 2)
* * * * [misc]progress:  [ 3 / 4 ] rewriting at (2 1 1 2 2)
* * * * [misc]progress:  [ 4 / 4 ] rewriting at (2 1 1 1 1)
* * * [misc]progress:  simplifying candidates
* * * * [misc]progress:  [ 1 / 50 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (- (+ (* x1 x2) 1) (sqr x2)) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (- (+ (* x1 x2) 1) (sqr x2)) (exp (* (+ x2 x3) x1))))) x4)
* * [misc]simplify:  iters left: 6 (28 enodes)
* * [misc]simplify:  iters left: 5 (70 enodes)
* * [misc]simplify:  iters left: 4 (155 enodes)
* * [misc]simplify:  iters left: 3 (330 enodes)
* [exit]simplify:  Simplified to (+ (+ (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4)) (* x3 (+ (+ x4 x2) (- x1 x3)))) (- (log (+ 1 (* x2 (- x1 x2)))) (+ (* (+ x2 x3) x1) x4)))
* * * * [misc]progress:  [ 2 / 50 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2)) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (/ (- (+ (/ 1 x3) (+ (/ 1 x1) (/ 1 x4))) (+ (/ 1 x2) (/ 1 (* x4 x3)))) x2)) (exp (* (+ x2 x3) x1))))) x4)
* * [misc]simplify:  iters left: 6 (36 enodes)
* * [misc]simplify:  iters left: 5 (83 enodes)
* * [misc]simplify:  iters left: 4 (181 enodes)
* * [misc]simplify:  iters left: 3 (371 enodes)
* [exit]simplify:  Simplified to (+ (- (/ (- (+ (+ (/ 1 x3) (/ 1 x4)) (- (/ 1 x1) (/ 1 x2))) (/ (/ 1 x4) x3)) x2) (+ (* x1 (+ x2 x3)) x4)) (+ (* x3 (+ (+ x2 x4) (- x1 x3))) (* (* x1 x4) (- (+ (+ x2 x3) (- x1)) x4))))
* * * * [misc]progress:  [ 3 / 50 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4))))) x2))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* -1 (/ (- (/ 1 x2) (+ (/ 1 x3) (+ (/ 1 (* x4 x3)) (+ (/ 1 x1) (/ 1 x4))))) x2))) (exp (* (+ x2 x3) x1))))) x4)
* * [misc]simplify:  iters left: 6 (38 enodes)
* * [misc]simplify:  iters left: 5 (90 enodes)
* * [misc]simplify:  iters left: 4 (187 enodes)
* * [misc]simplify:  iters left: 3 (378 enodes)
* [exit]simplify:  Simplified to (+ (+ (* x3 (+ (+ x2 x4) (- x1 x3))) (* (* x1 x4) (- x3 (- (- x4 x2) (- x1))))) (- (/ (- (- (- (/ 1 x2) (/ 1 x3)) (/ 1 (* x3 x4))) (+ (/ 1 x4) (/ 1 x1))) (/ x2 -1)) (+ (* (+ x2 x3) x1) x4)))
* * * * [misc]progress:  [ 4 / 50 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) 1) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) 1) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4)
* * [misc]simplify:  iters left: 6 (27 enodes)
* * [misc]simplify:  iters left: 5 (71 enodes)
* * [misc]simplify:  iters left: 4 (148 enodes)
* * [misc]simplify:  iters left: 3 (269 enodes)
* * [misc]simplify:  iters left: 2 (455 enodes)
* [exit]simplify:  Simplified to (- (+ (* (+ (+ (- x3 x4) (- x1)) x2) (* x1 x4)) (* (+ (- x1 (- x2 x4)) (- x3 (* x3 x4))) x2)) (+ (* (+ x2 x3) x1) x4))
* * * * [misc]progress:  [ 5 / 50 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (/ (- (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4))) (/ 1 x3)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4)
* * [misc]simplify:  iters left: 6 (36 enodes)
* * [misc]simplify:  iters left: 5 (88 enodes)
* * [misc]simplify:  iters left: 4 (183 enodes)
* * [misc]simplify:  iters left: 3 (372 enodes)
* [exit]simplify:  Simplified to (+ (+ (/ (+ (+ (/ 1 x2) (/ 1 x4)) (- (/ 1 x1) (/ 1 x3))) x3) (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2))) (- (* x2 (+ (- (+ x3 x4) (* x3 x4)) (- x1 x2))) (+ x4 (* x1 (+ x2 x3)))))
* * * * [misc]progress:  [ 6 / 50 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3)))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* -1 (/ (- (/ 1 x3) (+ (/ 1 x2) (+ (/ 1 x1) (/ 1 x4)))) x3)))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4)
* * [misc]simplify:  iters left: 6 (38 enodes)
* * [misc]simplify:  iters left: 5 (96 enodes)
* * [misc]simplify:  iters left: 4 (191 enodes)
* * [misc]simplify:  iters left: 3 (383 enodes)
* [exit]simplify:  Simplified to (+ (- (* (* x1 x4) (+ (- x1) (+ x2 (- x3 x4)))) (/ (- (- (/ 1 x3) (/ 1 x1)) (+ (/ 1 x2) (/ 1 x4))) x3)) (- (* x2 (- (+ (+ x3 x4) (- x1 x2)) (* x3 x4))) (+ x4 (* x1 (+ x2 x3)))))
* * * * [misc]progress:  [ 7 / 50 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) 1))) x4))>
* [enter]simplify:  Simplifying (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) 1))) x4)
* * [misc]simplify:  iters left: 6 (28 enodes)
* * [misc]simplify:  iters left: 5 (76 enodes)
* * [misc]simplify:  iters left: 4 (165 enodes)
* * [misc]simplify:  iters left: 3 (355 enodes)
* [exit]simplify:  Simplified to (+ (+ (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1)))) (* x3 (+ (+ x4 x1) (- x2 x3)))) (- (* (+ (- (+ x3 x1) x2) (- x4 (* x3 x4))) x2) (+ x4 (log 1))))
* * * * [misc]progress:  [ 8 / 50 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))))) x4))>
* [enter]simplify:  Simplifying (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))))) x4)
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (84 enodes)
* * [misc]simplify:  iters left: 4 (175 enodes)
* * [misc]simplify:  iters left: 3 (381 enodes)
* [exit]simplify:  Simplified to (+ (+ (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2)) (* x3 (- (+ x1 x2) (- x3 x4)))) (- (* (+ (- x1 (- x2 x4)) (- x3 (* x3 x4))) x2) (+ (/ (+ (/ 1 x3) (/ 1 x2)) x1) x4)))
* * * * [misc]progress:  [ 9 / 50 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))))) x4))>
* [enter]simplify:  Simplifying (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (/ (+ (/ 1 x2) (/ 1 x3)) x1))))) x4)
* * [misc]simplify:  iters left: 6 (33 enodes)
* * [misc]simplify:  iters left: 5 (84 enodes)
* * [misc]simplify:  iters left: 4 (175 enodes)
* * [misc]simplify:  iters left: 3 (381 enodes)
* [exit]simplify:  Simplified to (+ (+ (* (* x1 x4) (+ (+ (- x1) (- x3 x4)) x2)) (* x3 (- (+ x1 x2) (- x3 x4)))) (- (* (+ (- x1 (- x2 x4)) (- x3 (* x3 x4))) x2) (+ (/ (+ (/ 1 x3) (/ 1 x2)) x1) x4)))
* * * * [misc]progress:  [ 10 / 50 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (log (* (* 1 (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (- (log (* (* 1 (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4)
* * [misc]simplify:  iters left: 6 (25 enodes)
* * [misc]simplify:  iters left: 5 (66 enodes)
* * [misc]simplify:  iters left: 4 (145 enodes)
* * [misc]simplify:  iters left: 3 (261 enodes)
* * [misc]simplify:  iters left: 2 (432 enodes)
* [exit]simplify:  Simplified to (+ (- (* x2 (+ (+ x4 (- x1 x2)) (- x3 (* x4 x3)))) (* x1 (+ x2 x3))) (- (* (- (+ x1 x2) (- x3 x4)) x3) x4))
* * * * [misc]progress:  [ 11 / 50 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (log (* (* (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (- (log (* (* (exp (/ (- (+ (/ 1 x2) (/ 1 x3)) (+ (/ 1 x1) (/ 1 x4))) (* x1 x4))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4)
* * [misc]simplify:  iters left: 6 (35 enodes)
* * [misc]simplify:  iters left: 5 (91 enodes)
* * [misc]simplify:  iters left: 4 (203 enodes)
* * [misc]simplify:  iters left: 3 (390 enodes)
* [exit]simplify:  Simplified to (+ (+ (* x3 (+ (+ x4 x1) (- x2 x3))) (/ (- (- (/ 1 x3) (/ 1 x1)) (- (/ 1 x4) (/ 1 x2))) (* x4 x1))) (- (* (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))) x2) (+ (* x1 (+ x3 x2)) x4)))
* * * * [misc]progress:  [ 12 / 50 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (log (* (* (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (- (log (* (* (exp (/ (- (+ (/ 1 x1) (/ 1 x4)) (+ (/ 1 x2) (/ 1 x3))) (* x1 x4))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4)
* * [misc]simplify:  iters left: 6 (35 enodes)
* * [misc]simplify:  iters left: 5 (91 enodes)
* * [misc]simplify:  iters left: 4 (203 enodes)
* * [misc]simplify:  iters left: 3 (390 enodes)
* [exit]simplify:  Simplified to (+ (+ (* x3 (+ (+ x2 x4) (- x1 x3))) (/ (- (- (/ 1 x4) (/ 1 x2)) (- (/ 1 x3) (/ 1 x1))) (* x4 x1))) (- (* (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))) x2) (+ (* x1 (+ x3 x2)) x4)))
* * * * [misc]progress:  [ 13 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (pow (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) 1) (exp (* (+ x2 x3) x1))))) x4))>
* * * * [misc]progress:  [ 14 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (pow (exp x2) (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (exp x2)
* * [misc]simplify:  iters left: 1 (2 enodes)
* [exit]simplify:  Simplified to (exp x2)
* [exit]simplify:  Simplified to (exp x2)
* * * * [misc]progress:  [ 15 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (* (exp (* x2 (- x1 x2))) (exp (* x2 (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (exp (* x2 (- x1 x2)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (8 enodes)
* [exit]simplify:  Simplified to (pow (exp x2) (- x1 x2))
* [exit]simplify:  Simplified to (pow (exp x2) (- x1 x2))
* [enter]simplify:  Simplifying (exp (* x2 (- (+ x3 x4) (* x3 x4))))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* * [misc]simplify:  iters left: 4 (22 enodes)
* * [misc]simplify:  iters left: 3 (33 enodes)
* * [misc]simplify:  iters left: 2 (52 enodes)
* * [misc]simplify:  iters left: 1 (73 enodes)
* [exit]simplify:  Simplified to (pow (exp x2) (- (+ x3 x4) (* x4 x3)))
* [exit]simplify:  Simplified to (pow (exp x2) (- (+ x3 x4) (* x4 x3)))
* * * * [misc]progress:  [ 16 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (* (exp (* (- x1 x2) x2)) (exp (* (- (+ x3 x4) (* x3 x4)) x2))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (exp (* (- x1 x2) x2))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (8 enodes)
* * [misc]simplify:  iters left: 3 (11 enodes)
* [exit]simplify:  Simplified to (exp (* (- x1 x2) x2))
* [exit]simplify:  Simplified to (exp (* (- x1 x2) x2))
* [enter]simplify:  Simplifying (exp (* (- (+ x3 x4) (* x3 x4)) x2))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* * [misc]simplify:  iters left: 4 (28 enodes)
* * [misc]simplify:  iters left: 3 (46 enodes)
* * [misc]simplify:  iters left: 2 (69 enodes)
* * [misc]simplify:  iters left: 1 (84 enodes)
* [exit]simplify:  Simplified to (pow (exp x2) (- (+ x4 x3) (* x4 x3)))
* [exit]simplify:  Simplified to (pow (exp x2) (- (+ x4 x3) (* x4 x3)))
* * * * [misc]progress:  [ 17 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (log (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (log (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))))
* * [misc]simplify:  iters left: 6 (12 enodes)
* * [misc]simplify:  iters left: 5 (30 enodes)
* * [misc]simplify:  iters left: 4 (58 enodes)
* * [misc]simplify:  iters left: 3 (101 enodes)
* * [misc]simplify:  iters left: 2 (174 enodes)
* * [misc]simplify:  iters left: 1 (310 enodes)
* [exit]simplify:  Simplified to (* x2 (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3)))
* [exit]simplify:  Simplified to (* x2 (- (+ (- x1 x2) (+ x4 x3)) (* x4 x3)))
* * * * [misc]progress:  [ 18 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (log (exp (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (exp (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))))
* * [misc]simplify:  iters left: 6 (12 enodes)
* * [misc]simplify:  iters left: 5 (30 enodes)
* * [misc]simplify:  iters left: 4 (56 enodes)
* * [misc]simplify:  iters left: 3 (99 enodes)
* * [misc]simplify:  iters left: 2 (166 enodes)
* * [misc]simplify:  iters left: 1 (284 enodes)
* [exit]simplify:  Simplified to (pow (exp (pow (exp x2) (- x1 x2))) (pow (exp x2) (- (+ x3 x4) (* x3 x4))))
* [exit]simplify:  Simplified to (pow (exp (pow (exp x2) (- x1 x2))) (pow (exp x2) (- (+ x3 x4) (* x3 x4))))
* * * * [misc]progress:  [ 19 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (cube (cbrt (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (cbrt (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))))
* * [misc]simplify:  iters left: 6 (12 enodes)
* * [misc]simplify:  iters left: 5 (30 enodes)
* * [misc]simplify:  iters left: 4 (56 enodes)
* * [misc]simplify:  iters left: 3 (97 enodes)
* * [misc]simplify:  iters left: 2 (166 enodes)
* * [misc]simplify:  iters left: 1 (263 enodes)
* [exit]simplify:  Simplified to (cbrt (pow (exp x2) (- (- (+ x1 x4) (- x2 x3)) (* x3 x4))))
* [exit]simplify:  Simplified to (cbrt (pow (exp x2) (- (- (+ x1 x4) (- x2 x3)) (* x3 x4))))
* * * * [misc]progress:  [ 20 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (cbrt (cube (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (cube (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))))
* * [misc]simplify:  iters left: 6 (12 enodes)
* * [misc]simplify:  iters left: 5 (32 enodes)
* * [misc]simplify:  iters left: 4 (62 enodes)
* * [misc]simplify:  iters left: 3 (117 enodes)
* * [misc]simplify:  iters left: 2 (245 enodes)
* [exit]simplify:  Simplified to (exp (* (+ (+ x3 (- x1 x2)) (- x4 (* x3 x4))) (+ x2 (+ x2 x2))))
* [exit]simplify:  Simplified to (exp (* (+ (+ x3 (- x1 x2)) (- x4 (* x3 x4))) (+ x2 (+ x2 x2))))
* * * * [misc]progress:  [ 21 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (sqr (sqrt (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (sqrt (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))))
* * [misc]simplify:  iters left: 6 (12 enodes)
* * [misc]simplify:  iters left: 5 (30 enodes)
* * [misc]simplify:  iters left: 4 (56 enodes)
* * [misc]simplify:  iters left: 3 (97 enodes)
* * [misc]simplify:  iters left: 2 (166 enodes)
* * [misc]simplify:  iters left: 1 (263 enodes)
* [exit]simplify:  Simplified to (sqrt (pow (exp x2) (- (- (+ x1 x4) (- x2 x3)) (* x3 x4))))
* [exit]simplify:  Simplified to (sqrt (pow (exp x2) (- (- (+ x1 x4) (- x2 x3)) (* x3 x4))))
* * * * [misc]progress:  [ 22 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (* 1 (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))))) (exp (* (+ x2 x3) x1))))) x4))>
* * * * [misc]progress:  [ 23 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (pow (/ (exp (+ x2 x1)) (exp (- x3 x4))) x3)) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* * * * [misc]progress:  [ 24 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (pow (exp (- (+ x2 x1) (- x3 x4))) x3)) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* * * * [misc]progress:  [ 25 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (pow (exp (* (- (+ x2 x1) (- x3 x4)) x3)) 1)) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* * * * [misc]progress:  [ 26 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (pow (exp (- (+ x2 x1) (- x3 x4))) x3)) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (exp (- (+ x2 x1) (- x3 x4)))
* * [misc]simplify:  iters left: 5 (8 enodes)
* * [misc]simplify:  iters left: 4 (16 enodes)
* * [misc]simplify:  iters left: 3 (34 enodes)
* * [misc]simplify:  iters left: 2 (55 enodes)
* * [misc]simplify:  iters left: 1 (94 enodes)
* [exit]simplify:  Simplified to (exp (- (+ x4 x2) (- x3 x1)))
* [exit]simplify:  Simplified to (exp (- (+ x4 x2) (- x3 x1)))
* * * * [misc]progress:  [ 27 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (log (exp (* (- (+ x2 x1) (- x3 x4)) x3))))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (log (exp (* (- (+ x2 x1) (- x3 x4)) x3)))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (18 enodes)
* * [misc]simplify:  iters left: 4 (48 enodes)
* * [misc]simplify:  iters left: 3 (104 enodes)
* * [misc]simplify:  iters left: 2 (173 enodes)
* * [misc]simplify:  iters left: 1 (253 enodes)
* [exit]simplify:  Simplified to (* x3 (- (+ x1 x2) (- x3 x4)))
* [exit]simplify:  Simplified to (* x3 (- (+ x1 x2) (- x3 x4)))
* * * * [misc]progress:  [ 28 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (log (exp (exp (* (- (+ x2 x1) (- x3 x4)) x3))))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (exp (exp (* (- (+ x2 x1) (- x3 x4)) x3)))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (18 enodes)
* * [misc]simplify:  iters left: 4 (46 enodes)
* * [misc]simplify:  iters left: 3 (94 enodes)
* * [misc]simplify:  iters left: 2 (163 enodes)
* * [misc]simplify:  iters left: 1 (208 enodes)
* [exit]simplify:  Simplified to (exp (pow (exp x3) (- (+ x1 x4) (- x3 x2))))
* [exit]simplify:  Simplified to (exp (pow (exp x3) (- (+ x1 x4) (- x3 x2))))
* * * * [misc]progress:  [ 29 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (cube (cbrt (exp (* (- (+ x2 x1) (- x3 x4)) x3))))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (cbrt (exp (* (- (+ x2 x1) (- x3 x4)) x3)))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (18 enodes)
* * [misc]simplify:  iters left: 4 (46 enodes)
* * [misc]simplify:  iters left: 3 (94 enodes)
* * [misc]simplify:  iters left: 2 (159 enodes)
* * [misc]simplify:  iters left: 1 (204 enodes)
* [exit]simplify:  Simplified to (cbrt (pow (exp x3) (+ (+ x1 x4) (- x2 x3))))
* [exit]simplify:  Simplified to (cbrt (pow (exp x3) (+ (+ x1 x4) (- x2 x3))))
* * * * [misc]progress:  [ 30 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (cbrt (cube (exp (* (- (+ x2 x1) (- x3 x4)) x3))))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (cube (exp (* (- (+ x2 x1) (- x3 x4)) x3)))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (20 enodes)
* * [misc]simplify:  iters left: 4 (52 enodes)
* * [misc]simplify:  iters left: 3 (110 enodes)
* * [misc]simplify:  iters left: 2 (243 enodes)
* [exit]simplify:  Simplified to (exp (* (+ (- x1 x3) (+ x4 x2)) (+ (+ x3 x3) x3)))
* [exit]simplify:  Simplified to (exp (* (+ (- x1 x3) (+ x4 x2)) (+ (+ x3 x3) x3)))
* * * * [misc]progress:  [ 31 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (sqr (sqrt (exp (* (- (+ x2 x1) (- x3 x4)) x3))))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (sqrt (exp (* (- (+ x2 x1) (- x3 x4)) x3)))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (18 enodes)
* * [misc]simplify:  iters left: 4 (46 enodes)
* * [misc]simplify:  iters left: 3 (94 enodes)
* * [misc]simplify:  iters left: 2 (159 enodes)
* * [misc]simplify:  iters left: 1 (204 enodes)
* [exit]simplify:  Simplified to (sqrt (pow (exp x3) (+ (+ x1 x4) (- x2 x3))))
* [exit]simplify:  Simplified to (sqrt (pow (exp x3) (+ (+ x1 x4) (- x2 x3))))
* * * * [misc]progress:  [ 32 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (* 1 (exp (* (- (+ x2 x1) (- x3 x4)) x3)))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* * * * [misc]progress:  [ 33 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (pow (exp (+ x2 x3)) x1)))) x4))>
* * * * [misc]progress:  [ 34 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (pow (exp (* (+ x2 x3) x1)) 1)))) x4))>
* * * * [misc]progress:  [ 35 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (pow (exp (+ x2 x3)) x1)))) x4))>
* [enter]simplify:  Simplifying (exp (+ x2 x3))
* * [misc]simplify:  iters left: 3 (4 enodes)
* * [misc]simplify:  iters left: 2 (8 enodes)
* * [misc]simplify:  iters left: 1 (9 enodes)
* [exit]simplify:  Simplified to (exp (+ x3 x2))
* [exit]simplify:  Simplified to (exp (+ x3 x2))
* * * * [misc]progress:  [ 36 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (log (exp (* (+ x2 x3) x1))))))) x4))>
* [enter]simplify:  Simplifying (log (exp (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* * [misc]simplify:  iters left: 4 (25 enodes)
* * [misc]simplify:  iters left: 3 (37 enodes)
* * [misc]simplify:  iters left: 2 (59 enodes)
* * [misc]simplify:  iters left: 1 (77 enodes)
* [exit]simplify:  Simplified to (* x1 (+ x3 x2))
* [exit]simplify:  Simplified to (* x1 (+ x3 x2))
* * * * [misc]progress:  [ 37 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (log (exp (exp (* (+ x2 x3) x1))))))) x4))>
* [enter]simplify:  Simplifying (exp (exp (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* * [misc]simplify:  iters left: 4 (23 enodes)
* * [misc]simplify:  iters left: 3 (31 enodes)
* * [misc]simplify:  iters left: 2 (53 enodes)
* [exit]simplify:  Simplified to (exp (pow (exp x1) (+ x3 x2)))
* [exit]simplify:  Simplified to (exp (pow (exp x1) (+ x3 x2)))
* * * * [misc]progress:  [ 38 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (cube (cbrt (exp (* (+ x2 x3) x1))))))) x4))>
* [enter]simplify:  Simplifying (cbrt (exp (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* * [misc]simplify:  iters left: 4 (23 enodes)
* * [misc]simplify:  iters left: 3 (31 enodes)
* * [misc]simplify:  iters left: 2 (49 enodes)
* [exit]simplify:  Simplified to (cbrt (pow (exp x1) (+ x3 x2)))
* [exit]simplify:  Simplified to (cbrt (pow (exp x1) (+ x3 x2)))
* * * * [misc]progress:  [ 39 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (cbrt (cube (exp (* (+ x2 x3) x1))))))) x4))>
* [enter]simplify:  Simplifying (cube (exp (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (29 enodes)
* * [misc]simplify:  iters left: 3 (55 enodes)
* * [misc]simplify:  iters left: 2 (119 enodes)
* * [misc]simplify:  iters left: 1 (259 enodes)
* [exit]simplify:  Simplified to (pow (exp (+ x3 x2)) (+ x1 (+ x1 x1)))
* [exit]simplify:  Simplified to (pow (exp (+ x3 x2)) (+ x1 (+ x1 x1)))
* * * * [misc]progress:  [ 40 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (sqrt (exp (* (+ x2 x3) x1))))))) x4))>
* [enter]simplify:  Simplifying (sqrt (exp (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* * [misc]simplify:  iters left: 4 (23 enodes)
* * [misc]simplify:  iters left: 3 (31 enodes)
* * [misc]simplify:  iters left: 2 (49 enodes)
* [exit]simplify:  Simplified to (sqrt (pow (exp x1) (+ x3 x2)))
* [exit]simplify:  Simplified to (sqrt (pow (exp x1) (+ x3 x2)))
* * * * [misc]progress:  [ 41 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (* 1 (exp (* (+ x2 x3) x1)))))) x4))>
* * * * [misc]progress:  [ 42 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (pow (exp (+ x2 (+ (- x1) (- x3 x4)))) (* x4 x1)) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* * * * [misc]progress:  [ 43 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (pow (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) 1) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* * * * [misc]progress:  [ 44 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (pow (exp (+ x2 (+ (- x1) (- x3 x4)))) (* x4 x1)) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (exp (+ x2 (+ (- x1) (- x3 x4))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (17 enodes)
* * [misc]simplify:  iters left: 4 (35 enodes)
* * [misc]simplify:  iters left: 3 (66 enodes)
* * [misc]simplify:  iters left: 2 (98 enodes)
* * [misc]simplify:  iters left: 1 (119 enodes)
* [exit]simplify:  Simplified to (* (exp (- x3 x4)) (exp (- x2 x1)))
* [exit]simplify:  Simplified to (* (exp (- x3 x4)) (exp (- x2 x1)))
* * * * [misc]progress:  [ 45 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (log (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (log (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))))
* * [misc]simplify:  iters left: 6 (12 enodes)
* * [misc]simplify:  iters left: 5 (22 enodes)
* * [misc]simplify:  iters left: 4 (41 enodes)
* * [misc]simplify:  iters left: 3 (84 enodes)
* * [misc]simplify:  iters left: 2 (142 enodes)
* * [misc]simplify:  iters left: 1 (194 enodes)
* [exit]simplify:  Simplified to (* (* x1 x4) (- (- x3 x1) (- x4 x2)))
* [exit]simplify:  Simplified to (* (* x1 x4) (- (- x3 x1) (- x4 x2)))
* * * * [misc]progress:  [ 46 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (log (exp (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (exp (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))))
* * [misc]simplify:  iters left: 6 (12 enodes)
* * [misc]simplify:  iters left: 5 (22 enodes)
* * [misc]simplify:  iters left: 4 (41 enodes)
* * [misc]simplify:  iters left: 3 (92 enodes)
* * [misc]simplify:  iters left: 2 (167 enodes)
* * [misc]simplify:  iters left: 1 (218 enodes)
* [exit]simplify:  Simplified to (exp (pow (* (exp (- x3 x4)) (/ (exp x2) (exp x1))) (* x1 x4)))
* [exit]simplify:  Simplified to (exp (pow (* (exp (- x3 x4)) (/ (exp x2) (exp x1))) (* x1 x4)))
* * * * [misc]progress:  [ 47 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (cube (cbrt (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (cbrt (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))))
* * [misc]simplify:  iters left: 6 (12 enodes)
* * [misc]simplify:  iters left: 5 (22 enodes)
* * [misc]simplify:  iters left: 4 (41 enodes)
* * [misc]simplify:  iters left: 3 (92 enodes)
* * [misc]simplify:  iters left: 2 (167 enodes)
* * [misc]simplify:  iters left: 1 (218 enodes)
* [exit]simplify:  Simplified to (cbrt (pow (* (exp (- x3 x4)) (/ (exp x2) (exp x1))) (* x1 x4)))
* [exit]simplify:  Simplified to (cbrt (pow (* (exp (- x3 x4)) (/ (exp x2) (exp x1))) (* x1 x4)))
* * * * [misc]progress:  [ 48 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (cbrt (cube (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (cube (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))))
* * [misc]simplify:  iters left: 6 (12 enodes)
* * [misc]simplify:  iters left: 5 (24 enodes)
* * [misc]simplify:  iters left: 4 (47 enodes)
* * [misc]simplify:  iters left: 3 (112 enodes)
* * [misc]simplify:  iters left: 2 (254 enodes)
* [exit]simplify:  Simplified to (exp (* (+ (- x3 x4) (+ x2 (- x1))) (* (+ 2 1) (* x1 x4))))
* [exit]simplify:  Simplified to (exp (* (+ (- x3 x4) (+ x2 (- x1))) (* (+ 2 1) (* x1 x4))))
* * * * [misc]progress:  [ 49 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (sqr (sqrt (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* [enter]simplify:  Simplifying (sqrt (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))))
* * [misc]simplify:  iters left: 6 (12 enodes)
* * [misc]simplify:  iters left: 5 (22 enodes)
* * [misc]simplify:  iters left: 4 (41 enodes)
* * [misc]simplify:  iters left: 3 (92 enodes)
* * [misc]simplify:  iters left: 2 (167 enodes)
* * [misc]simplify:  iters left: 1 (218 enodes)
* [exit]simplify:  Simplified to (sqrt (pow (* (exp (- x3 x4)) (/ (exp x2) (exp x1))) (* x1 x4)))
* [exit]simplify:  Simplified to (sqrt (pow (* (exp (- x3 x4)) (/ (exp x2) (exp x1))) (* x1 x4)))
* * * * [misc]progress:  [ 50 / 50 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (* 1 (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1)))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>
* * * [misc]progress:  adding candidates to table
* * [misc]progress:  iteration 3 / 3
* * * [misc]progress:  picking best candidate
* * * * [misc]pick:  Picked  #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* * * [misc]progress:  localizing error
* * * [misc]progress:  generating series expansions
* * * * [misc]progress:  [ 1 / 4 ] generating series at (2 1 2 1 2 1 2)
* [misc]approximate:  Taking taylor expansion of (- (sqr x1) (* x2 x1)) in (x1 x2) around 0
* [misc]taylor:  Taking taylor expansion of (- (sqr x1) (* x2 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (* x2 x1) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- (sqr x1) (* x2 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x2 x1) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (sqr x1) (* x2 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x2 x1) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* x2 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* x2 1) (* 0 0)) into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (+ 0 (- x2)) into (- x2)
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (+ (* x2 0) (+ (* 0 1) (* 0 0))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x2
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 1) (* 0 0)))) into 0
* [misc]backup-simplify:  Simplify (+ (* x2 0) (+ (* 0 0) (+ (* 0 1) (* 0 0)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 1) (* 0 0))))) into 0
* [misc]backup-simplify:  Simplify (+ (* x2 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 1) (* 0 0))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* -1 (* x2 x1)) (* 1 (sqr (* 1 x1)))) into (- (sqr x1) (* x1 x2))
* [misc]approximate:  Taking taylor expansion of (- (sqr (/ 1 x1)) (* (/ 1 x2) (/ 1 x1))) in (x1 x2) around 0
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 x1)) (* (/ 1 x2) (/ 1 x1))) in x2
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 x1)) (* (/ 1 x2) (/ 1 x1))) in x1
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 x1)) (* (/ 1 x2) (/ 1 x1))) in x1
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (* 1 1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x2
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (* 0 1)) into 0
* [misc]backup-simplify:  Simplify (* (/ 1 x2) 1) into (/ 1 x2)
* [misc]backup-simplify:  Simplify (- (/ 1 x2)) into (- (/ 1 x2))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 x2))) into (- (/ 1 x2))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x2)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x2) (/ 0 x2)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x2) 0) (* 0 1)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x2) (/ 0 x2)) (* 0 (/ 0 x2)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x2) 0) (+ (* 0 0) (* 0 1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x2) (/ 0 x2)) (* 0 (/ 0 x2)) (* 0 (/ 0 x2)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x2) 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 1 (sqr (* 1 (/ 1 (/ 1 x1))))) (* -1 (* (/ 1 (/ 1 x2)) (/ 1 (/ 1 x1))))) into (- (sqr x1) (* x1 x2))
* [misc]approximate:  Taking taylor expansion of (- (sqr (/ 1 (- x1))) (* (/ 1 (- x2)) (/ 1 (- x1)))) in (x1 x2) around 0
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 (- x1))) (* (/ 1 (- x2)) (/ 1 (- x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 (- x1))) (* (/ 1 (- x2)) (/ 1 (- x1)))) in x1
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 (- x1))) (* (/ 1 (- x2)) (/ 1 (- x1)))) in x1
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]backup-simplify:  Simplify (* -1 -1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x2
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (* 0 -1)) into 0
* [misc]backup-simplify:  Simplify (* (/ -1 x2) -1) into (/ 1 x2)
* [misc]backup-simplify:  Simplify (- (/ 1 x2)) into (- (/ 1 x2))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 x2))) into (- (/ 1 x2))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x2)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 0) (* 0 -1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x2) (/ 0 (- x2))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x2) 0) (* 0 -1)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x2) (/ 0 (- x2))) (* 0 (/ 0 (- x2))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x2) 0) (+ (* 0 0) (* 0 -1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x2) (/ 0 (- x2))) (* 0 (/ 0 (- x2))) (* 0 (/ 0 (- x2))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x2) 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 1 (sqr (* 1 (/ 1 (/ 1 (- x1)))))) (* -1 (* (/ 1 (/ 1 (- x2))) (/ 1 (/ 1 (- x1)))))) into (- (sqr x1) (* x1 x2))
* * * * [misc]progress:  [ 2 / 4 ] generating series at (2 1 1 2 1 2 1 2)
* [misc]approximate:  Taking taylor expansion of (- (sqr x1) (* x2 x1)) in (x1 x2) around 0
* [misc]taylor:  Taking taylor expansion of (- (sqr x1) (* x2 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (* x2 x1) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- (sqr x1) (* x2 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x2 x1) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (sqr x1) (* x2 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x2 x1) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* x2 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* x2 1) (* 0 0)) into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (+ 0 (- x2)) into (- x2)
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (+ (* x2 0) (+ (* 0 1) (* 0 0))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x2
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 1) (* 0 0)))) into 0
* [misc]backup-simplify:  Simplify (+ (* x2 0) (+ (* 0 0) (+ (* 0 1) (* 0 0)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 1) (* 0 0))))) into 0
* [misc]backup-simplify:  Simplify (+ (* x2 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 1) (* 0 0))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* -1 (* x2 x1)) (* 1 (sqr (* 1 x1)))) into (- (sqr x1) (* x1 x2))
* [misc]approximate:  Taking taylor expansion of (- (sqr (/ 1 x1)) (* (/ 1 x2) (/ 1 x1))) in (x1 x2) around 0
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 x1)) (* (/ 1 x2) (/ 1 x1))) in x2
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 x1)) (* (/ 1 x2) (/ 1 x1))) in x1
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 x1)) (* (/ 1 x2) (/ 1 x1))) in x1
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (* 1 1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x2
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (* 0 1)) into 0
* [misc]backup-simplify:  Simplify (* (/ 1 x2) 1) into (/ 1 x2)
* [misc]backup-simplify:  Simplify (- (/ 1 x2)) into (- (/ 1 x2))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 x2))) into (- (/ 1 x2))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x2)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x2) (/ 0 x2)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x2) 0) (* 0 1)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x2) (/ 0 x2)) (* 0 (/ 0 x2)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x2) 0) (+ (* 0 0) (* 0 1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x2) (/ 0 x2)) (* 0 (/ 0 x2)) (* 0 (/ 0 x2)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x2) 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 1 (sqr (* 1 (/ 1 (/ 1 x1))))) (* -1 (* (/ 1 (/ 1 x2)) (/ 1 (/ 1 x1))))) into (- (sqr x1) (* x1 x2))
* [misc]approximate:  Taking taylor expansion of (- (sqr (/ 1 (- x1))) (* (/ 1 (- x2)) (/ 1 (- x1)))) in (x1 x2) around 0
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 (- x1))) (* (/ 1 (- x2)) (/ 1 (- x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 (- x1))) (* (/ 1 (- x2)) (/ 1 (- x1)))) in x1
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 (- x1))) (* (/ 1 (- x2)) (/ 1 (- x1)))) in x1
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]backup-simplify:  Simplify (* -1 -1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x2
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (* 0 -1)) into 0
* [misc]backup-simplify:  Simplify (* (/ -1 x2) -1) into (/ 1 x2)
* [misc]backup-simplify:  Simplify (- (/ 1 x2)) into (- (/ 1 x2))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 x2))) into (- (/ 1 x2))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x2)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 0) (* 0 -1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x2) (/ 0 (- x2))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x2) 0) (* 0 -1)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x2) (/ 0 (- x2))) (* 0 (/ 0 (- x2))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x2) 0) (+ (* 0 0) (* 0 -1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x2) (/ 0 (- x2))) (* 0 (/ 0 (- x2))) (* 0 (/ 0 (- x2))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x2) 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 1 (sqr (* 1 (/ 1 (/ 1 (- x1)))))) (* -1 (* (/ 1 (/ 1 (- x2))) (/ 1 (/ 1 (- x1)))))) into (- (sqr x1) (* x1 x2))
* * * * [misc]progress:  [ 3 / 4 ] generating series at (2 1 1 1 1 2 2 1 2 1 2)
* [misc]approximate:  Taking taylor expansion of (- (sqr x1) (* x2 x1)) in (x1 x2) around 0
* [misc]taylor:  Taking taylor expansion of (- (sqr x1) (* x2 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (* x2 x1) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- (sqr x1) (* x2 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x2 x1) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (sqr x1) (* x2 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x2 x1) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* x2 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* x2 1) (* 0 0)) into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (+ 0 (- x2)) into (- x2)
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (+ (* x2 0) (+ (* 0 1) (* 0 0))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x2
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 1) (* 0 0)))) into 0
* [misc]backup-simplify:  Simplify (+ (* x2 0) (+ (* 0 0) (+ (* 0 1) (* 0 0)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 1) (* 0 0))))) into 0
* [misc]backup-simplify:  Simplify (+ (* x2 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 1) (* 0 0))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* -1 (* x2 x1)) (* 1 (sqr (* 1 x1)))) into (- (sqr x1) (* x1 x2))
* [misc]approximate:  Taking taylor expansion of (- (sqr (/ 1 x1)) (* (/ 1 x2) (/ 1 x1))) in (x1 x2) around 0
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 x1)) (* (/ 1 x2) (/ 1 x1))) in x2
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 x1)) (* (/ 1 x2) (/ 1 x1))) in x1
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 x1)) (* (/ 1 x2) (/ 1 x1))) in x1
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (* 1 1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x2
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (* 0 1)) into 0
* [misc]backup-simplify:  Simplify (* (/ 1 x2) 1) into (/ 1 x2)
* [misc]backup-simplify:  Simplify (- (/ 1 x2)) into (- (/ 1 x2))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 x2))) into (- (/ 1 x2))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x2)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x2) (/ 0 x2)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x2) 0) (* 0 1)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x2) (/ 0 x2)) (* 0 (/ 0 x2)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x2) 0) (+ (* 0 0) (* 0 1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x2) (/ 0 x2)) (* 0 (/ 0 x2)) (* 0 (/ 0 x2)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x2) 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 1 (sqr (* 1 (/ 1 (/ 1 x1))))) (* -1 (* (/ 1 (/ 1 x2)) (/ 1 (/ 1 x1))))) into (- (sqr x1) (* x1 x2))
* [misc]approximate:  Taking taylor expansion of (- (sqr (/ 1 (- x1))) (* (/ 1 (- x2)) (/ 1 (- x1)))) in (x1 x2) around 0
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 (- x1))) (* (/ 1 (- x2)) (/ 1 (- x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 (- x1))) (* (/ 1 (- x2)) (/ 1 (- x1)))) in x1
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 (- x1))) (* (/ 1 (- x2)) (/ 1 (- x1)))) in x1
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]backup-simplify:  Simplify (* -1 -1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x2
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (* 0 -1)) into 0
* [misc]backup-simplify:  Simplify (* (/ -1 x2) -1) into (/ 1 x2)
* [misc]backup-simplify:  Simplify (- (/ 1 x2)) into (- (/ 1 x2))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 x2))) into (- (/ 1 x2))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x2)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 0) (* 0 -1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x2) (/ 0 (- x2))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x2) 0) (* 0 -1)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x2) (/ 0 (- x2))) (* 0 (/ 0 (- x2))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x2) 0) (+ (* 0 0) (* 0 -1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x2) (/ 0 (- x2))) (* 0 (/ 0 (- x2))) (* 0 (/ 0 (- x2))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x2) 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 1 (sqr (* 1 (/ 1 (/ 1 (- x1)))))) (* -1 (* (/ 1 (/ 1 (- x2))) (/ 1 (/ 1 (- x1)))))) into (- (sqr x1) (* x1 x2))
* * * * [misc]progress:  [ 4 / 4 ] generating series at (2 1 1 1 1 1 2 1 2)
* [misc]approximate:  Taking taylor expansion of (- (sqr x1) (* x2 x1)) in (x1 x2) around 0
* [misc]taylor:  Taking taylor expansion of (- (sqr x1) (* x2 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (* x2 x1) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]taylor:  Taking taylor expansion of (- (sqr x1) (* x2 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x2 x1) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (sqr x1) (* x2 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (sqr x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* x2 x1) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0 0) into 0
* [misc]backup-simplify:  Simplify (* x2 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 1) (* 1 0)) into 0
* [misc]backup-simplify:  Simplify (+ (* x2 1) (* 0 0)) into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (+ 0 (- x2)) into (- x2)
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 1) (* 0 0))) into 1
* [misc]backup-simplify:  Simplify (+ (* x2 0) (+ (* 0 1) (* 0 0))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x2
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 1) (* 0 0)))) into 0
* [misc]backup-simplify:  Simplify (+ (* x2 0) (+ (* 0 0) (+ (* 0 1) (* 0 0)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 1) (* 0 0))))) into 0
* [misc]backup-simplify:  Simplify (+ (* x2 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 1) (* 0 0))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* -1 (* x2 x1)) (* 1 (sqr (* 1 x1)))) into (- (sqr x1) (* x1 x2))
* [misc]approximate:  Taking taylor expansion of (- (sqr (/ 1 x1)) (* (/ 1 x2) (/ 1 x1))) in (x1 x2) around 0
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 x1)) (* (/ 1 x2) (/ 1 x1))) in x2
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (/ 1 x1)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (/ 1 x1) into (/ 1 x1)
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 x1)) (* (/ 1 x2) (/ 1 x1))) in x1
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 x1)) (* (/ 1 x2) (/ 1 x1))) in x1
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x2) (/ 1 x1)) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (/ 1 x2) into (/ 1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (* 1 1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x2
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (* 0 1)) into 0
* [misc]backup-simplify:  Simplify (* (/ 1 x2) 1) into (/ 1 x2)
* [misc]backup-simplify:  Simplify (- (/ 1 x2)) into (- (/ 1 x2))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 x2))) into (- (/ 1 x2))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x2)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x2) (/ 0 x2)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x2) 0) (* 0 1)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x2) (/ 0 x2)) (* 0 (/ 0 x2)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x2) 0) (+ (* 0 0) (* 0 1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x2) (/ 0 x2)) (* 0 (/ 0 x2)) (* 0 (/ 0 x2)))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ 1 x2) 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 1 (sqr (* 1 (/ 1 (/ 1 x1))))) (* -1 (* (/ 1 (/ 1 x2)) (/ 1 (/ 1 x1))))) into (- (sqr x1) (* x1 x2))
* [misc]approximate:  Taking taylor expansion of (- (sqr (/ 1 (- x1))) (* (/ 1 (- x2)) (/ 1 (- x1)))) in (x1 x2) around 0
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 (- x1))) (* (/ 1 (- x2)) (/ 1 (- x1)))) in x2
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (/ 1 (- x1))) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x2
* [misc]taylor:  Taking taylor expansion of (- x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x2
* [misc]taylor:  Taking taylor expansion of (- x1) in x2
* [misc]taylor:  Taking taylor expansion of x1 in x2
* [misc]backup-simplify:  Simplify x1 into x1
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (- x1) into (- x1)
* [misc]backup-simplify:  Simplify (/ 1 (- x1)) into (/ -1 x1)
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 (- x1))) (* (/ 1 (- x2)) (/ 1 (- x1)))) in x1
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (sqr (/ 1 (- x1))) (* (/ 1 (- x2)) (/ 1 (- x1)))) in x1
* [misc]taylor:  Taking taylor expansion of (sqr (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x2)) (/ 1 (- x1))) in x1
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x2)) in x1
* [misc]taylor:  Taking taylor expansion of (- x2) in x1
* [misc]taylor:  Taking taylor expansion of x2 in x1
* [misc]backup-simplify:  Simplify x2 into x2
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (/ 1 (- x2)) into (/ -1 x2)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x1)) in x1
* [misc]taylor:  Taking taylor expansion of (- x1) in x1
* [misc]taylor:  Taking taylor expansion of x1 in x1
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]backup-simplify:  Simplify (* -1 -1) into 1
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]taylor:  Taking taylor expansion of 1 in x2
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (* 0 -1)) into 0
* [misc]backup-simplify:  Simplify (* (/ -1 x2) -1) into (/ 1 x2)
* [misc]backup-simplify:  Simplify (- (/ 1 x2)) into (- (/ 1 x2))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 x2))) into (- (/ 1 x2))
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x2)) in x2
* [misc]taylor:  Taking taylor expansion of (/ 1 x2) in x2
* [misc]taylor:  Taking taylor expansion of x2 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 0) (* 0 -1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x2) (/ 0 (- x2))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x2) 0) (* 0 -1)) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x2) (/ 0 (- x2))) (* 0 (/ 0 (- x2))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x2) 0) (+ (* 0 0) (* 0 -1))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x2) into (- x2)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x2) (/ 0 (- x2))) (* 0 (/ 0 (- x2))) (* 0 (/ 0 (- x2))))) into 0
* [misc]backup-simplify:  Simplify (+ (* (/ -1 x2) 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in x2
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 1 (sqr (* 1 (/ 1 (/ 1 (- x1)))))) (* -1 (* (/ 1 (/ 1 (- x2))) (/ 1 (/ 1 (- x1)))))) into (- (sqr x1) (* x1 x2))
* * * [misc]progress:  generating rewritten candidates
* * * * [misc]progress:  [ 1 / 4 ] rewriting at (2 1 2 1 2 1 2)
* * * * [misc]progress:  [ 2 / 4 ] rewriting at (2 1 1 2 1 2 1 2)
* * * * [misc]progress:  [ 3 / 4 ] rewriting at (2 1 1 1 1 2 2 1 2 1 2)
* * * * [misc]progress:  [ 4 / 4 ] rewriting at (2 1 1 1 1 1 2 1 2)
* * * [misc]progress:  simplifying candidates
* * * * [misc]progress:  [ 1 / 64 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4)
* * [misc]simplify:  iters left: 6 (77 enodes)
* * [misc]simplify:  iters left: 5 (213 enodes)
* [exit]simplify:  Simplified to (- (/ (+ (* (- (* (* (+ (* (+ x2 x1) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))) (* (+ x2 x1) (- x1 x2)))) (+ (* x3 (- x3 x2)) (* x2 x2))) x2) (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))) (* (+ x2 x1) (* x1 (+ (cube x3) (cube x2)))))) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))))))) x4)
* * * * [misc]progress:  [ 2 / 64 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4)
* * [misc]simplify:  iters left: 6 (77 enodes)
* * [misc]simplify:  iters left: 5 (213 enodes)
* [exit]simplify:  Simplified to (- (/ (+ (* (- (* (* (+ (* (+ x2 x1) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))) (* (+ x2 x1) (- x1 x2)))) (+ (* x3 (- x3 x2)) (* x2 x2))) x2) (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))) (* (+ x2 x1) (* x1 (+ (cube x3) (cube x2)))))) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))))))) x4)
* * * * [misc]progress:  [ 3 / 64 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4)
* * [misc]simplify:  iters left: 6 (77 enodes)
* * [misc]simplify:  iters left: 5 (213 enodes)
* [exit]simplify:  Simplified to (- (/ (+ (* (- (* (* (+ (* (+ x2 x1) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))) (* (+ x2 x1) (- x1 x2)))) (+ (* x3 (- x3 x2)) (* x2 x2))) x2) (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))) (* (+ x2 x1) (* x1 (+ (cube x3) (cube x2)))))) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))))))) x4)
* * * * [misc]progress:  [ 4 / 64 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4)
* * [misc]simplify:  iters left: 6 (77 enodes)
* * [misc]simplify:  iters left: 5 (212 enodes)
* [exit]simplify:  Simplified to (- (/ (+ (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* (- (* (+ (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (* (+ x2 x1) (- x1 x2))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3))))) (+ (* x3 (- x3 x2)) (* x2 x2))) (* (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3))) (* (+ x2 x1) (* x1 (+ (cube x3) (cube x2)))))) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3))))))) x4)
* * * * [misc]progress:  [ 5 / 64 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4)
* * [misc]simplify:  iters left: 6 (77 enodes)
* * [misc]simplify:  iters left: 5 (212 enodes)
* [exit]simplify:  Simplified to (- (/ (+ (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* (- (* (+ (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (* (+ x2 x1) (- x1 x2))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3))))) (+ (* x3 (- x3 x2)) (* x2 x2))) (* (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3))) (* (+ x2 x1) (* x1 (+ (cube x3) (cube x2)))))) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3))))))) x4)
* * * * [misc]progress:  [ 6 / 64 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4)
* * [misc]simplify:  iters left: 6 (77 enodes)
* * [misc]simplify:  iters left: 5 (212 enodes)
* [exit]simplify:  Simplified to (- (/ (+ (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* (- (* (+ (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (* (+ x2 x1) (- x1 x2))) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3))))) (+ (* x3 (- x3 x2)) (* x2 x2))) (* (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3))) (* (+ x2 x1) (* x1 (+ (cube x3) (cube x2)))))) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))) (* (+ x4 x3) (+ x4 x3))))))) x4)
* * * * [misc]progress:  [ 7 / 64 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4)
* * [misc]simplify:  iters left: 6 (75 enodes)
* * [misc]simplify:  iters left: 5 (202 enodes)
* [exit]simplify:  Simplified to (- (/ (+ (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (- (* (+ (* (* x2 (* (- x1 x2) (+ x2 x1))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))) (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3))))) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (* (+ x2 x1) (* (+ (cube x2) (cube x3)) x1))))) (* (+ (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2))))) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4))))) x3)) (* (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (+ x2 x1)) (+ (* x2 x2) (* x3 (- x3 x2)))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (+ x2 x1)) (+ (* x2 x2) (* x3 (- x3 x2)))))) x4)
* * * * [misc]progress:  [ 8 / 64 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4)
* * [misc]simplify:  iters left: 6 (75 enodes)
* * [misc]simplify:  iters left: 5 (202 enodes)
* [exit]simplify:  Simplified to (- (/ (+ (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (- (* (+ (* (* x2 (* (- x1 x2) (+ x2 x1))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))) (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3))))) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (* (+ x2 x1) (* (+ (cube x2) (cube x3)) x1))))) (* (+ (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2))))) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4))))) x3)) (* (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (+ x2 x1)) (+ (* x2 x2) (* x3 (- x3 x2)))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (+ x2 x1)) (+ (* x2 x2) (* x3 (- x3 x2)))))) x4)
* * * * [misc]progress:  [ 9 / 64 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4)
* * [misc]simplify:  iters left: 6 (75 enodes)
* * [misc]simplify:  iters left: 5 (202 enodes)
* [exit]simplify:  Simplified to (- (/ (+ (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (- (* (+ (* (* x2 (* (- x1 x2) (+ x2 x1))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))) (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3))))) (+ (* x2 x2) (* x3 (- x3 x2)))) (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (* (+ x2 x1) (* (+ (cube x2) (cube x3)) x1))))) (* (+ (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2))))) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4))))) x3)) (* (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (+ x2 x1)) (+ (* x2 x2) (* x3 (- x3 x2)))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (+ x2 x1)) (+ (* x2 x2) (* x3 (- x3 x2)))))) x4)
* * * * [misc]progress:  [ 10 / 64 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4)
* * [misc]simplify:  iters left: 6 (76 enodes)
* * [misc]simplify:  iters left: 5 (209 enodes)
* [exit]simplify:  Simplified to (- (/ (+ (* (+ (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x4 (+ x4 x3)) (* x3 x3)))) (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) x3) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))) (+ x2 x1))) (* (- (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (* (- x1 x2) (+ x2 x1))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))))) (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (* (+ x2 x1) (* x1 (+ (cube x2) (cube x3)))))) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x4 (+ x4 x3)) (* x3 x3)))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x4 (+ x4 x3)) (* x3 x3)))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))) (+ x2 x1)))) x4)
* * * * [misc]progress:  [ 11 / 64 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4)
* * [misc]simplify:  iters left: 6 (76 enodes)
* * [misc]simplify:  iters left: 5 (209 enodes)
* [exit]simplify:  Simplified to (- (/ (+ (* (+ (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x4 (+ x4 x3)) (* x3 x3)))) (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) x3) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))) (+ x2 x1))) (* (- (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (* (- x1 x2) (+ x2 x1))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))))) (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (* (+ x2 x1) (* x1 (+ (cube x2) (cube x3)))))) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x4 (+ x4 x3)) (* x3 x3)))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x4 (+ x4 x3)) (* x3 x3)))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))) (+ x2 x1)))) x4)
* * * * [misc]progress:  [ 12 / 64 ] simplifiying candidate #<alt-event (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4)
* * [misc]simplify:  iters left: 6 (76 enodes)
* * [misc]simplify:  iters left: 5 (209 enodes)
* [exit]simplify:  Simplified to (- (/ (+ (* (+ (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x4 (+ x4 x3)) (* x3 x3)))) (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) x3) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))) (+ x2 x1))) (* (- (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (* (- x1 x2) (+ x2 x1))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))))) (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3))) (* (+ x2 x1) (* x1 (+ (cube x2) (cube x3)))))) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x4 (+ x4 x3)) (* x3 x3)))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x4 (+ x4 x3)) (* x3 x3)))) (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (sqr (+ x4 x3)))) (+ x2 x1)))) x4)
* * * * [misc]progress:  [ 13 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (log (/ (exp (sqr x1)) (exp (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (/ (exp (sqr x1)) (exp (* x2 x1)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* * [misc]simplify:  iters left: 3 (17 enodes)
* * [misc]simplify:  iters left: 2 (19 enodes)
* [exit]simplify:  Simplified to (pow (exp x1) (- x1 x2))
* [exit]simplify:  Simplified to (pow (exp x1) (- x1 x2))
* * * * [misc]progress:  [ 14 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (pow (- (sqr x1) (* x2 x1)) 1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* * * * [misc]progress:  [ 15 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (exp (log (- (sqr x1) (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (log (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (8 enodes)
* * [misc]simplify:  iters left: 3 (10 enodes)
* * [misc]simplify:  iters left: 2 (14 enodes)
* * [misc]simplify:  iters left: 1 (15 enodes)
* [exit]simplify:  Simplified to (log (* x1 (- x1 x2)))
* [exit]simplify:  Simplified to (log (* x1 (- x1 x2)))
* * * * [misc]progress:  [ 16 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (log (exp (- (sqr x1) (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (exp (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (11 enodes)
* * [misc]simplify:  iters left: 3 (18 enodes)
* * [misc]simplify:  iters left: 2 (20 enodes)
* [exit]simplify:  Simplified to (pow (exp x1) (- x1 x2))
* [exit]simplify:  Simplified to (pow (exp x1) (- x1 x2))
* * * * [misc]progress:  [ 17 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (cube (cbrt (- (sqr x1) (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (cbrt (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (8 enodes)
* * [misc]simplify:  iters left: 3 (10 enodes)
* * [misc]simplify:  iters left: 2 (11 enodes)
* [exit]simplify:  Simplified to (cbrt (* x1 (- x1 x2)))
* [exit]simplify:  Simplified to (cbrt (* x1 (- x1 x2)))
* * * * [misc]progress:  [ 18 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (cbrt (cube (- (sqr x1) (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (cube (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* * [misc]simplify:  iters left: 3 (14 enodes)
* * [misc]simplify:  iters left: 2 (22 enodes)
* * [misc]simplify:  iters left: 1 (29 enodes)
* [exit]simplify:  Simplified to (cube (* x1 (- x1 x2)))
* [exit]simplify:  Simplified to (cube (* x1 (- x1 x2)))
* * * * [misc]progress:  [ 19 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (sqr (sqrt (- (sqr x1) (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (sqrt (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (8 enodes)
* * [misc]simplify:  iters left: 3 (10 enodes)
* * [misc]simplify:  iters left: 2 (11 enodes)
* [exit]simplify:  Simplified to (sqrt (* x1 (- x1 x2)))
* [exit]simplify:  Simplified to (sqrt (* x1 (- x1 x2)))
* * * * [misc]progress:  [ 20 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (/ (- (pow (sqr x1) 3) (pow (* x2 x1) 3)) (+ (sqr (sqr x1)) (+ (sqr (* x2 x1)) (* (sqr x1) (* x2 x1)))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (pow (sqr x1) 3) (pow (* x2 x1) 3))
* * [misc]simplify:  iters left: 5 (8 enodes)
* * [misc]simplify:  iters left: 4 (12 enodes)
* * [misc]simplify:  iters left: 3 (21 enodes)
* * [misc]simplify:  iters left: 2 (37 enodes)
* * [misc]simplify:  iters left: 1 (52 enodes)
* [exit]simplify:  Simplified to (* (cube x1) (- (cube x1) (cube x2)))
* [exit]simplify:  Simplified to (* (cube x1) (- (cube x1) (cube x2)))
* [enter]simplify:  Simplifying (+ (sqr (sqr x1)) (+ (sqr (* x2 x1)) (* (sqr x1) (* x2 x1))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (20 enodes)
* * [misc]simplify:  iters left: 4 (35 enodes)
* * [misc]simplify:  iters left: 3 (63 enodes)
* * [misc]simplify:  iters left: 2 (102 enodes)
* * [misc]simplify:  iters left: 1 (132 enodes)
* [exit]simplify:  Simplified to (+ (* (cube x1) (+ x1 x2)) (* (* x2 x1) (* x2 x1)))
* [exit]simplify:  Simplified to (+ (* (cube x1) (+ x1 x2)) (* (* x2 x1) (* x2 x1)))
* * * * [misc]progress:  [ 21 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (+ (sqr x1) (- (* x2 x1)))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (* x2 x1))
* * [misc]simplify:  iters left: 4 (4 enodes)
* * [misc]simplify:  iters left: 3 (9 enodes)
* * [misc]simplify:  iters left: 2 (10 enodes)
* * [misc]simplify:  iters left: 1 (11 enodes)
* [exit]simplify:  Simplified to (* x2 (- x1))
* [exit]simplify:  Simplified to (* x2 (- x1))
* * * * [misc]progress:  [ 22 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (* 1 (- (sqr x1) (* x2 x1)))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* * * * [misc]progress:  [ 23 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (/ (- (sqr (sqr x1)) (sqr (* x2 x1))) (+ (sqr x1) (* x2 x1)))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (sqr (sqr x1)) (sqr (* x2 x1)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (16 enodes)
* * [misc]simplify:  iters left: 3 (27 enodes)
* * [misc]simplify:  iters left: 2 (44 enodes)
* * [misc]simplify:  iters left: 1 (74 enodes)
* [exit]simplify:  Simplified to (* (* (- x1 x2) x1) (* x1 (+ x1 x2)))
* [exit]simplify:  Simplified to (* (* (- x1 x2) x1) (* x1 (+ x1 x2)))
* [enter]simplify:  Simplifying (+ (sqr x1) (* x2 x1))
* * [misc]simplify:  iters left: 4 (5 enodes)
* * [misc]simplify:  iters left: 3 (8 enodes)
* * [misc]simplify:  iters left: 2 (12 enodes)
* [exit]simplify:  Simplified to (* x1 (+ x1 x2))
* [exit]simplify:  Simplified to (* x1 (+ x1 x2))
* * * * [misc]progress:  [ 24 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (* (+ x1 (sqrt (* x2 x1))) (- x1 (sqrt (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ x1 (sqrt (* x2 x1)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (7 enodes)
* [exit]simplify:  Simplified to (+ x1 (sqrt (* x2 x1)))
* [exit]simplify:  Simplified to (+ x1 (sqrt (* x2 x1)))
* [enter]simplify:  Simplifying (- x1 (sqrt (* x2 x1)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (- x1 (sqrt (* x2 x1)))
* [exit]simplify:  Simplified to (- x1 (sqrt (* x2 x1)))
* * * * [misc]progress:  [ 25 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (* x1 (- x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- x1 x2)
* * [misc]simplify:  iters left: 2 (3 enodes)
* [exit]simplify:  Simplified to (- x1 x2)
* [exit]simplify:  Simplified to (- x1 x2)
* * * * [misc]progress:  [ 26 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (log (/ (exp (sqr x1)) (exp (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (/ (exp (sqr x1)) (exp (* x2 x1)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* * [misc]simplify:  iters left: 3 (17 enodes)
* * [misc]simplify:  iters left: 2 (19 enodes)
* [exit]simplify:  Simplified to (pow (exp x1) (- x1 x2))
* [exit]simplify:  Simplified to (pow (exp x1) (- x1 x2))
* * * * [misc]progress:  [ 27 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (pow (- (sqr x1) (* x2 x1)) 1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* * * * [misc]progress:  [ 28 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (exp (log (- (sqr x1) (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (log (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (8 enodes)
* * [misc]simplify:  iters left: 3 (10 enodes)
* * [misc]simplify:  iters left: 2 (14 enodes)
* * [misc]simplify:  iters left: 1 (15 enodes)
* [exit]simplify:  Simplified to (log (* x1 (- x1 x2)))
* [exit]simplify:  Simplified to (log (* x1 (- x1 x2)))
* * * * [misc]progress:  [ 29 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (log (exp (- (sqr x1) (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (exp (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (11 enodes)
* * [misc]simplify:  iters left: 3 (18 enodes)
* * [misc]simplify:  iters left: 2 (20 enodes)
* [exit]simplify:  Simplified to (pow (exp x1) (- x1 x2))
* [exit]simplify:  Simplified to (pow (exp x1) (- x1 x2))
* * * * [misc]progress:  [ 30 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (cube (cbrt (- (sqr x1) (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (cbrt (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (8 enodes)
* * [misc]simplify:  iters left: 3 (10 enodes)
* * [misc]simplify:  iters left: 2 (11 enodes)
* [exit]simplify:  Simplified to (cbrt (* x1 (- x1 x2)))
* [exit]simplify:  Simplified to (cbrt (* x1 (- x1 x2)))
* * * * [misc]progress:  [ 31 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (cbrt (cube (- (sqr x1) (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (cube (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* * [misc]simplify:  iters left: 3 (14 enodes)
* * [misc]simplify:  iters left: 2 (22 enodes)
* * [misc]simplify:  iters left: 1 (29 enodes)
* [exit]simplify:  Simplified to (cube (* x1 (- x1 x2)))
* [exit]simplify:  Simplified to (cube (* x1 (- x1 x2)))
* * * * [misc]progress:  [ 32 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (sqr (sqrt (- (sqr x1) (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (sqrt (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (8 enodes)
* * [misc]simplify:  iters left: 3 (10 enodes)
* * [misc]simplify:  iters left: 2 (11 enodes)
* [exit]simplify:  Simplified to (sqrt (* x1 (- x1 x2)))
* [exit]simplify:  Simplified to (sqrt (* x1 (- x1 x2)))
* * * * [misc]progress:  [ 33 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (/ (- (pow (sqr x1) 3) (pow (* x2 x1) 3)) (+ (sqr (sqr x1)) (+ (sqr (* x2 x1)) (* (sqr x1) (* x2 x1)))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (pow (sqr x1) 3) (pow (* x2 x1) 3))
* * [misc]simplify:  iters left: 5 (8 enodes)
* * [misc]simplify:  iters left: 4 (12 enodes)
* * [misc]simplify:  iters left: 3 (21 enodes)
* * [misc]simplify:  iters left: 2 (37 enodes)
* * [misc]simplify:  iters left: 1 (52 enodes)
* [exit]simplify:  Simplified to (* (cube x1) (- (cube x1) (cube x2)))
* [exit]simplify:  Simplified to (* (cube x1) (- (cube x1) (cube x2)))
* [enter]simplify:  Simplifying (+ (sqr (sqr x1)) (+ (sqr (* x2 x1)) (* (sqr x1) (* x2 x1))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (20 enodes)
* * [misc]simplify:  iters left: 4 (35 enodes)
* * [misc]simplify:  iters left: 3 (63 enodes)
* * [misc]simplify:  iters left: 2 (102 enodes)
* * [misc]simplify:  iters left: 1 (132 enodes)
* [exit]simplify:  Simplified to (+ (* (cube x1) (+ x1 x2)) (* (* x2 x1) (* x2 x1)))
* [exit]simplify:  Simplified to (+ (* (cube x1) (+ x1 x2)) (* (* x2 x1) (* x2 x1)))
* * * * [misc]progress:  [ 34 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (+ (sqr x1) (- (* x2 x1)))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (* x2 x1))
* * [misc]simplify:  iters left: 4 (4 enodes)
* * [misc]simplify:  iters left: 3 (9 enodes)
* * [misc]simplify:  iters left: 2 (10 enodes)
* * [misc]simplify:  iters left: 1 (11 enodes)
* [exit]simplify:  Simplified to (* x2 (- x1))
* [exit]simplify:  Simplified to (* x2 (- x1))
* * * * [misc]progress:  [ 35 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (* 1 (- (sqr x1) (* x2 x1)))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* * * * [misc]progress:  [ 36 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (/ (- (sqr (sqr x1)) (sqr (* x2 x1))) (+ (sqr x1) (* x2 x1)))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (sqr (sqr x1)) (sqr (* x2 x1)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (16 enodes)
* * [misc]simplify:  iters left: 3 (27 enodes)
* * [misc]simplify:  iters left: 2 (44 enodes)
* * [misc]simplify:  iters left: 1 (74 enodes)
* [exit]simplify:  Simplified to (* (* (- x1 x2) x1) (* x1 (+ x1 x2)))
* [exit]simplify:  Simplified to (* (* (- x1 x2) x1) (* x1 (+ x1 x2)))
* [enter]simplify:  Simplifying (+ (sqr x1) (* x2 x1))
* * [misc]simplify:  iters left: 4 (5 enodes)
* * [misc]simplify:  iters left: 3 (8 enodes)
* * [misc]simplify:  iters left: 2 (12 enodes)
* [exit]simplify:  Simplified to (* x1 (+ x1 x2))
* [exit]simplify:  Simplified to (* x1 (+ x1 x2))
* * * * [misc]progress:  [ 37 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (* (+ x1 (sqrt (* x2 x1))) (- x1 (sqrt (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ x1 (sqrt (* x2 x1)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (7 enodes)
* [exit]simplify:  Simplified to (+ x1 (sqrt (* x2 x1)))
* [exit]simplify:  Simplified to (+ x1 (sqrt (* x2 x1)))
* [enter]simplify:  Simplifying (- x1 (sqrt (* x2 x1)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (- x1 (sqrt (* x2 x1)))
* [exit]simplify:  Simplified to (- x1 (sqrt (* x2 x1)))
* * * * [misc]progress:  [ 38 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (* x1 (- x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- x1 x2)
* * [misc]simplify:  iters left: 2 (3 enodes)
* [exit]simplify:  Simplified to (- x1 x2)
* [exit]simplify:  Simplified to (- x1 x2)
* * * * [misc]progress:  [ 39 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (log (/ (exp (sqr x1)) (exp (* x2 x1))))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (/ (exp (sqr x1)) (exp (* x2 x1)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* * [misc]simplify:  iters left: 3 (17 enodes)
* * [misc]simplify:  iters left: 2 (19 enodes)
* [exit]simplify:  Simplified to (pow (exp x1) (- x1 x2))
* [exit]simplify:  Simplified to (pow (exp x1) (- x1 x2))
* * * * [misc]progress:  [ 40 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (pow (- (sqr x1) (* x2 x1)) 1)) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* * * * [misc]progress:  [ 41 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (exp (log (- (sqr x1) (* x2 x1))))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (log (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (8 enodes)
* * [misc]simplify:  iters left: 3 (10 enodes)
* * [misc]simplify:  iters left: 2 (14 enodes)
* * [misc]simplify:  iters left: 1 (15 enodes)
* [exit]simplify:  Simplified to (log (* x1 (- x1 x2)))
* [exit]simplify:  Simplified to (log (* x1 (- x1 x2)))
* * * * [misc]progress:  [ 42 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (log (exp (- (sqr x1) (* x2 x1))))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (exp (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (11 enodes)
* * [misc]simplify:  iters left: 3 (18 enodes)
* * [misc]simplify:  iters left: 2 (20 enodes)
* [exit]simplify:  Simplified to (pow (exp x1) (- x1 x2))
* [exit]simplify:  Simplified to (pow (exp x1) (- x1 x2))
* * * * [misc]progress:  [ 43 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (cube (cbrt (- (sqr x1) (* x2 x1))))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (cbrt (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (8 enodes)
* * [misc]simplify:  iters left: 3 (10 enodes)
* * [misc]simplify:  iters left: 2 (11 enodes)
* [exit]simplify:  Simplified to (cbrt (* x1 (- x1 x2)))
* [exit]simplify:  Simplified to (cbrt (* x1 (- x1 x2)))
* * * * [misc]progress:  [ 44 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (cbrt (cube (- (sqr x1) (* x2 x1))))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (cube (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* * [misc]simplify:  iters left: 3 (14 enodes)
* * [misc]simplify:  iters left: 2 (22 enodes)
* * [misc]simplify:  iters left: 1 (29 enodes)
* [exit]simplify:  Simplified to (cube (* x1 (- x1 x2)))
* [exit]simplify:  Simplified to (cube (* x1 (- x1 x2)))
* * * * [misc]progress:  [ 45 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (sqr (sqrt (- (sqr x1) (* x2 x1))))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (sqrt (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (8 enodes)
* * [misc]simplify:  iters left: 3 (10 enodes)
* * [misc]simplify:  iters left: 2 (11 enodes)
* [exit]simplify:  Simplified to (sqrt (* x1 (- x1 x2)))
* [exit]simplify:  Simplified to (sqrt (* x1 (- x1 x2)))
* * * * [misc]progress:  [ 46 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (/ (- (pow (sqr x1) 3) (pow (* x2 x1) 3)) (+ (sqr (sqr x1)) (+ (sqr (* x2 x1)) (* (sqr x1) (* x2 x1)))))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (pow (sqr x1) 3) (pow (* x2 x1) 3))
* * [misc]simplify:  iters left: 5 (8 enodes)
* * [misc]simplify:  iters left: 4 (12 enodes)
* * [misc]simplify:  iters left: 3 (21 enodes)
* * [misc]simplify:  iters left: 2 (37 enodes)
* * [misc]simplify:  iters left: 1 (52 enodes)
* [exit]simplify:  Simplified to (* (cube x1) (- (cube x1) (cube x2)))
* [exit]simplify:  Simplified to (* (cube x1) (- (cube x1) (cube x2)))
* [enter]simplify:  Simplifying (+ (sqr (sqr x1)) (+ (sqr (* x2 x1)) (* (sqr x1) (* x2 x1))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (20 enodes)
* * [misc]simplify:  iters left: 4 (35 enodes)
* * [misc]simplify:  iters left: 3 (63 enodes)
* * [misc]simplify:  iters left: 2 (102 enodes)
* * [misc]simplify:  iters left: 1 (132 enodes)
* [exit]simplify:  Simplified to (+ (* (cube x1) (+ x1 x2)) (* (* x2 x1) (* x2 x1)))
* [exit]simplify:  Simplified to (+ (* (cube x1) (+ x1 x2)) (* (* x2 x1) (* x2 x1)))
* * * * [misc]progress:  [ 47 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (+ (sqr x1) (- (* x2 x1)))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (* x2 x1))
* * [misc]simplify:  iters left: 4 (4 enodes)
* * [misc]simplify:  iters left: 3 (9 enodes)
* * [misc]simplify:  iters left: 2 (10 enodes)
* * [misc]simplify:  iters left: 1 (11 enodes)
* [exit]simplify:  Simplified to (* x2 (- x1))
* [exit]simplify:  Simplified to (* x2 (- x1))
* * * * [misc]progress:  [ 48 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (* 1 (- (sqr x1) (* x2 x1)))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* * * * [misc]progress:  [ 49 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (/ (- (sqr (sqr x1)) (sqr (* x2 x1))) (+ (sqr x1) (* x2 x1)))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (sqr (sqr x1)) (sqr (* x2 x1)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (16 enodes)
* * [misc]simplify:  iters left: 3 (27 enodes)
* * [misc]simplify:  iters left: 2 (44 enodes)
* * [misc]simplify:  iters left: 1 (74 enodes)
* [exit]simplify:  Simplified to (* (* (- x1 x2) x1) (* x1 (+ x1 x2)))
* [exit]simplify:  Simplified to (* (* (- x1 x2) x1) (* x1 (+ x1 x2)))
* [enter]simplify:  Simplifying (+ (sqr x1) (* x2 x1))
* * [misc]simplify:  iters left: 4 (5 enodes)
* * [misc]simplify:  iters left: 3 (8 enodes)
* * [misc]simplify:  iters left: 2 (12 enodes)
* [exit]simplify:  Simplified to (* x1 (+ x1 x2))
* [exit]simplify:  Simplified to (* x1 (+ x1 x2))
* * * * [misc]progress:  [ 50 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (* (+ x1 (sqrt (* x2 x1))) (- x1 (sqrt (* x2 x1))))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ x1 (sqrt (* x2 x1)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (7 enodes)
* [exit]simplify:  Simplified to (+ x1 (sqrt (* x2 x1)))
* [exit]simplify:  Simplified to (+ x1 (sqrt (* x2 x1)))
* [enter]simplify:  Simplifying (- x1 (sqrt (* x2 x1)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (- x1 (sqrt (* x2 x1)))
* [exit]simplify:  Simplified to (- x1 (sqrt (* x2 x1)))
* * * * [misc]progress:  [ 51 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (* x1 (- x1 x2))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- x1 x2)
* * [misc]simplify:  iters left: 2 (3 enodes)
* [exit]simplify:  Simplified to (- x1 x2)
* [exit]simplify:  Simplified to (- x1 x2)
* * * * [misc]progress:  [ 52 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (log (/ (exp (sqr x1)) (exp (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (/ (exp (sqr x1)) (exp (* x2 x1)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* * [misc]simplify:  iters left: 3 (17 enodes)
* * [misc]simplify:  iters left: 2 (19 enodes)
* [exit]simplify:  Simplified to (pow (exp x1) (- x1 x2))
* [exit]simplify:  Simplified to (pow (exp x1) (- x1 x2))
* * * * [misc]progress:  [ 53 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (pow (- (sqr x1) (* x2 x1)) 1)) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* * * * [misc]progress:  [ 54 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (exp (log (- (sqr x1) (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (log (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (8 enodes)
* * [misc]simplify:  iters left: 3 (10 enodes)
* * [misc]simplify:  iters left: 2 (14 enodes)
* * [misc]simplify:  iters left: 1 (15 enodes)
* [exit]simplify:  Simplified to (log (* x1 (- x1 x2)))
* [exit]simplify:  Simplified to (log (* x1 (- x1 x2)))
* * * * [misc]progress:  [ 55 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (log (exp (- (sqr x1) (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (exp (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (11 enodes)
* * [misc]simplify:  iters left: 3 (18 enodes)
* * [misc]simplify:  iters left: 2 (20 enodes)
* [exit]simplify:  Simplified to (pow (exp x1) (- x1 x2))
* [exit]simplify:  Simplified to (pow (exp x1) (- x1 x2))
* * * * [misc]progress:  [ 56 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (cube (cbrt (- (sqr x1) (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (cbrt (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (8 enodes)
* * [misc]simplify:  iters left: 3 (10 enodes)
* * [misc]simplify:  iters left: 2 (11 enodes)
* [exit]simplify:  Simplified to (cbrt (* x1 (- x1 x2)))
* [exit]simplify:  Simplified to (cbrt (* x1 (- x1 x2)))
* * * * [misc]progress:  [ 57 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (cbrt (cube (- (sqr x1) (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (cube (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* * [misc]simplify:  iters left: 3 (14 enodes)
* * [misc]simplify:  iters left: 2 (22 enodes)
* * [misc]simplify:  iters left: 1 (29 enodes)
* [exit]simplify:  Simplified to (cube (* x1 (- x1 x2)))
* [exit]simplify:  Simplified to (cube (* x1 (- x1 x2)))
* * * * [misc]progress:  [ 58 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (sqr (sqrt (- (sqr x1) (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (sqrt (- (sqr x1) (* x2 x1)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (8 enodes)
* * [misc]simplify:  iters left: 3 (10 enodes)
* * [misc]simplify:  iters left: 2 (11 enodes)
* [exit]simplify:  Simplified to (sqrt (* x1 (- x1 x2)))
* [exit]simplify:  Simplified to (sqrt (* x1 (- x1 x2)))
* * * * [misc]progress:  [ 59 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (/ (- (pow (sqr x1) 3) (pow (* x2 x1) 3)) (+ (sqr (sqr x1)) (+ (sqr (* x2 x1)) (* (sqr x1) (* x2 x1)))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (pow (sqr x1) 3) (pow (* x2 x1) 3))
* * [misc]simplify:  iters left: 5 (8 enodes)
* * [misc]simplify:  iters left: 4 (12 enodes)
* * [misc]simplify:  iters left: 3 (21 enodes)
* * [misc]simplify:  iters left: 2 (37 enodes)
* * [misc]simplify:  iters left: 1 (52 enodes)
* [exit]simplify:  Simplified to (* (cube x1) (- (cube x1) (cube x2)))
* [exit]simplify:  Simplified to (* (cube x1) (- (cube x1) (cube x2)))
* [enter]simplify:  Simplifying (+ (sqr (sqr x1)) (+ (sqr (* x2 x1)) (* (sqr x1) (* x2 x1))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (20 enodes)
* * [misc]simplify:  iters left: 4 (35 enodes)
* * [misc]simplify:  iters left: 3 (63 enodes)
* * [misc]simplify:  iters left: 2 (102 enodes)
* * [misc]simplify:  iters left: 1 (132 enodes)
* [exit]simplify:  Simplified to (+ (* (cube x1) (+ x1 x2)) (* (* x2 x1) (* x2 x1)))
* [exit]simplify:  Simplified to (+ (* (cube x1) (+ x1 x2)) (* (* x2 x1) (* x2 x1)))
* * * * [misc]progress:  [ 60 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (+ (sqr x1) (- (* x2 x1)))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (* x2 x1))
* * [misc]simplify:  iters left: 4 (4 enodes)
* * [misc]simplify:  iters left: 3 (9 enodes)
* * [misc]simplify:  iters left: 2 (10 enodes)
* * [misc]simplify:  iters left: 1 (11 enodes)
* [exit]simplify:  Simplified to (* x2 (- x1))
* [exit]simplify:  Simplified to (* x2 (- x1))
* * * * [misc]progress:  [ 61 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (* 1 (- (sqr x1) (* x2 x1)))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* * * * [misc]progress:  [ 62 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (/ (- (sqr (sqr x1)) (sqr (* x2 x1))) (+ (sqr x1) (* x2 x1)))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- (sqr (sqr x1)) (sqr (* x2 x1)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (16 enodes)
* * [misc]simplify:  iters left: 3 (27 enodes)
* * [misc]simplify:  iters left: 2 (44 enodes)
* * [misc]simplify:  iters left: 1 (74 enodes)
* [exit]simplify:  Simplified to (* (* (- x1 x2) x1) (* x1 (+ x1 x2)))
* [exit]simplify:  Simplified to (* (* (- x1 x2) x1) (* x1 (+ x1 x2)))
* [enter]simplify:  Simplifying (+ (sqr x1) (* x2 x1))
* * [misc]simplify:  iters left: 4 (5 enodes)
* * [misc]simplify:  iters left: 3 (8 enodes)
* * [misc]simplify:  iters left: 2 (12 enodes)
* [exit]simplify:  Simplified to (* x1 (+ x1 x2))
* [exit]simplify:  Simplified to (* x1 (+ x1 x2))
* * * * [misc]progress:  [ 63 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (* (+ x1 (sqrt (* x2 x1))) (- x1 (sqrt (* x2 x1))))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (+ x1 (sqrt (* x2 x1)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (7 enodes)
* [exit]simplify:  Simplified to (+ x1 (sqrt (* x2 x1)))
* [exit]simplify:  Simplified to (+ x1 (sqrt (* x2 x1)))
* [enter]simplify:  Simplifying (- x1 (sqrt (* x2 x1)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (- x1 (sqrt (* x2 x1)))
* [exit]simplify:  Simplified to (- x1 (sqrt (* x2 x1)))
* * * * [misc]progress:  [ 64 / 64 ] simplifiying candidate #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (* x1 (- x1 x2))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))>
* [enter]simplify:  Simplifying (- x1 x2)
* * [misc]simplify:  iters left: 2 (3 enodes)
* [exit]simplify:  Simplified to (- x1 x2)
* [exit]simplify:  Simplified to (- x1 x2)
* * * [misc]progress:  adding candidates to table
* [misc]progress:  [Phase 3 of 3] Extracting.
* * [misc]regime-changes:  Finding splitpoints for: (#<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2))))) (- (* x2 (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3)))) (- x2 x3))) (* (* x1 (- (* x2 x2) (* x3 x3))) (- (- x1 x2) (- (+ x4 x3) (* x4 x3)))))) (* (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (- x2 x3)) (+ (* x3 (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (- (sqr x1) (* x2 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2)))))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))> #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (* (* (+ x2 x1) (- x2 x3)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))) (+ (* (+ x4 x3) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2)))))) (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) x3) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* x2 (- x1 x2)))))))) (* (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (* x2 (- x2 x3)) (+ (* (+ x2 x1) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (* (- x1 x2) (+ x2 x1))))) (* (* (* (* (+ x2 x3) x1) (- x2 x3)) (+ x2 x1)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))> #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))> #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))> #<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))> #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))) x4))> #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (* (* (+ x2 x1) (- x2 x3)) (+ (+ x4 x3) (* x4 x3))) (+ (* x3 (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (+ (* x2 x2) (* (- x1 x2) x1)) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* (- x1 x2) x1))))))) (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1)))) (- (* (* (- x2 x3) x2) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))))) (* (* (- x2 x3) (* (+ x2 x3) x1)) (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))> #<alt-delta (λ (x1 x2 x3 x4) (- (log (exp (+ (- (* x2 (- (+ (+ x3 x4) (- x1 x2)) (* x3 x4))) (- (* (+ x2 x3) x1) (* x3 (+ (+ x4 x2) (- x1 x3))))) (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1))))))) x4))> #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1)))) (- (* (* (+ (* x3 (- x3 x2)) (* x2 x2)) x2) (+ (cube (- x1 x2)) (cube (- (+ x4 x3) (* x4 x3))))) (* (+ (* (- (+ x4 x3) (* x4 x3)) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (- x1 x2) (- x1 x2))) (* x1 (+ (cube x3) (cube x2)))))) (* (+ (* (* x3 (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (+ (* x2 x2) (* (- x1 x2) x1)) (- (cube x3) (cube x4))))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* (- x1 x2) x1)))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (- (+ x4 x3) (* x4 x3)) (- (- (+ x4 x3) (* x4 x3)) (- x1 x2))) (* (- x1 x2) (- x1 x2)))))) (* (* (+ (sqr (- x1 x2)) (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3)))) (- (* x3 x3) (* x2 (- x3 x2)))) (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2))) (* x2 x2)) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))) x4))> #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* x2 (+ (* x2 (+ x2 x1)) (sqr x1))) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (- (cube x1) (cube x2))) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))))) (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (* (+ (* x2 (+ x2 x1)) (sqr x1)) (* (+ (cube x3) (cube x2)) x1)))) (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)))) (* (* (+ (* x2 (+ x2 x1)) (sqr x1)) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))))) (+ (* (+ x4 x3) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))) x3)))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))> #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))> #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (- (sqr x1) (* x2 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) x3) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2))))) (+ (* (+ x4 x3) x4) (* x3 x3)))) (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2)))) (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2))))) (- (* (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3)))) (+ (* x3 (- x3 x2)) (* x2 x2))) x2) (* (* (+ (cube x3) (cube x2)) x1) (- (- x1 x2) (- (+ x4 x3) (* x4 x3))))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (- (- x1 x2) (- (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))) x4))> #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (* (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (+ (* x2 (+ x2 x1)) (sqr x1))) (- x2 x3)) (+ (* (+ x4 x3) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (* x3 (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))))) (* (- (* (* x2 (- x2 x3)) (+ (* (- (cube x1) (cube x2)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))) (* (- (cube (+ x4 x3)) (cube (* x4 x3))) (+ (* x2 (+ x2 x1)) (sqr x1))))) (* (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (+ (* x2 (+ x2 x1)) (sqr x1))) (* (- x2 x3) (* x1 (+ x2 x3))))) (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))))) (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))) (- x2 x3))) (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2))) (* x2 x2)) (* (+ x3 x4) (+ (* x2 x2) (* (- x1 x2) x1)))))) x4))> #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (* (* (- x2 x3) (+ x2 x1)) (+ (* x4 x3) (+ x4 x3))) (+ (* (* (* (* x1 x4) (+ x4 x3)) (- (sqr x1) (* x2 (- x1 x2)))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* x3 (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* x2 (- x1 x2))))))))) (* (- (* (* x2 (- x2 x3)) (* (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3))) (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (* (* x1 (* (- x2 x3) (+ x2 x3))) (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3))))) (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))) x4))> #<alt-delta (λ (x1 x2 x3 x4) (- (/ (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))) x4))>)
* [misc]regimes:  Found splitpoints: (#s(sp 0 x1 +inf.0)) , with alts (#<alt-delta (λ (x1 x2 x3 x4) (- (log (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))) x4))>)
* [enter]simplify:  Simplifying (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2))))) (- (* x2 (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3)))) (- x2 x3))) (* (* x1 (- (* x2 x2) (* x3 x3))) (- (- x1 x2) (- (+ x4 x3) (* x4 x3))))))
* * [misc]simplify:  iters left: 6 (36 enodes)
* * [misc]simplify:  iters left: 5 (76 enodes)
* * [misc]simplify:  iters left: 4 (156 enodes)
* * [misc]simplify:  iters left: 3 (419 enodes)
* [exit]simplify:  Simplified to (* (- (* (* (- x2 x3) x2) (- (* (- x1 x2) (- x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3))))) (* (* (- x2 x3) (* (+ x3 x2) x1)) (- (+ (- x1 x2) (* x4 x3)) (+ x4 x3)))) (* (- (* (+ (- x1) (- x3 x4)) (+ (- x1) (- x3 x4))) (* (+ (- (- x1) x2) (- x3 x4)) x2)) (* (+ (sqr x4) (* x3 (+ x4 x3))) (- (sqr x1) (* (- x1 x2) x2)))))
* [exit]simplify:  Simplified to (* (- (* (* (- x2 x3) x2) (- (* (- x1 x2) (- x1 x2)) (* (- (+ x4 x3) (* x4 x3)) (- (+ x4 x3) (* x4 x3))))) (* (* (- x2 x3) (* (+ x3 x2) x1)) (- (+ (- x1 x2) (* x4 x3)) (+ x4 x3)))) (* (- (* (+ (- x1) (- x3 x4)) (+ (- x1) (- x3 x4))) (* (+ (- (- x1) x2) (- x3 x4)) x2)) (* (+ (sqr x4) (* x3 (+ x4 x3))) (- (sqr x1) (* (- x1 x2) x2)))))
* [enter]simplify:  Simplifying (* (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (- x2 x3)) (+ (* x3 (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (- (sqr x1) (* x2 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2)))))))
* * [misc]simplify:  iters left: 6 (44 enodes)
* * [misc]simplify:  iters left: 5 (119 enodes)
* * [misc]simplify:  iters left: 4 (284 enodes)
* [exit]simplify:  Simplified to (+ (* (* (- (+ (* x4 x3) (- x1 x2)) (+ x4 x3)) (* (- x2 x3) x3)) (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (- (* x1 x1) (* (- x1 x2) x2)) (- (cube x3) (cube x4)))) (- (+ (sqr x2) (* (+ (- x1) (- x3 x4)) (+ (- x1) (- x3 x4)))) (* x2 (+ (- x1) (- x3 x4)))))) (* (* (* (* (- (+ (* x4 x3) (- x1 x2)) (+ x4 x3)) (- x2 x3)) x1) (* (+ (cube x2) (cube (+ (- x1) (- x3 x4)))) (* x4 (+ (* x4 (+ x4 x3)) (* x3 x3))))) (- (* x1 x1) (* (- x1 x2) x2))))
* [exit]simplify:  Simplified to (+ (* (* (- (+ (* x4 x3) (- x1 x2)) (+ x4 x3)) (* (- x2 x3) x3)) (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (- (* x1 x1) (* (- x1 x2) x2)) (- (cube x3) (cube x4)))) (- (+ (sqr x2) (* (+ (- x1) (- x3 x4)) (+ (- x1) (- x3 x4)))) (* x2 (+ (- x1) (- x3 x4)))))) (* (* (* (* (- (+ (* x4 x3) (- x1 x2)) (+ x4 x3)) (- x2 x3)) x1) (* (+ (cube x2) (cube (+ (- x1) (- x3 x4)))) (* x4 (+ (* x4 (+ x4 x3)) (* x3 x3))))) (- (* x1 x1) (* (- x1 x2) x2))))
* [enter]simplify:  Simplifying (* (* (* (+ x2 x1) (- x2 x3)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3))))) (+ (* (+ x4 x3) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2)))))) (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) x3) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* x2 (- x1 x2))))))))
* * [misc]simplify:  iters left: 6 (45 enodes)
* * [misc]simplify:  iters left: 5 (118 enodes)
* * [misc]simplify:  iters left: 4 (302 enodes)
* [exit]simplify:  Simplified to (* (+ (* (* (+ x4 x3) (* (* x4 x1) (- (sqr x1) (* x2 (- x1 x2))))) (+ (cube (+ (- x1) (- x3 x4))) (cube x2))) (* (- (* (+ x4 x3) (+ (cube x2) (cube x1))) (* (- (sqr x1) (* x2 (- x1 x2))) (* (+ x4 x3) (- x3 x4)))) (+ (* x3 (* x2 x2)) (* (* x3 (+ (- x1) (- x3 x4))) (- (+ (- x1) (- x3 x4)) x2))))) (* (+ (* (+ (* x3 x4) (+ x4 x3)) (* x3 x4)) (* (+ x4 x3) (+ x4 x3))) (* (+ x1 x2) (- x2 x3))))
* [exit]simplify:  Simplified to (* (+ (* (* (+ x4 x3) (* (* x4 x1) (- (sqr x1) (* x2 (- x1 x2))))) (+ (cube (+ (- x1) (- x3 x4))) (cube x2))) (* (- (* (+ x4 x3) (+ (cube x2) (cube x1))) (* (- (sqr x1) (* x2 (- x1 x2))) (* (+ x4 x3) (- x3 x4)))) (+ (* x3 (* x2 x2)) (* (* x3 (+ (- x1) (- x3 x4))) (- (+ (- x1) (- x3 x4)) x2))))) (* (+ (* (+ (* x3 x4) (+ x4 x3)) (* x3 x4)) (* (+ x4 x3) (+ x4 x3))) (* (+ x1 x2) (- x2 x3))))
* [enter]simplify:  Simplifying (* (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (* x2 (- x2 x3)) (+ (* (+ x2 x1) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))) (* (- x1 x2) (+ x2 x1))))) (* (* (* (* (+ x2 x3) x1) (- x2 x3)) (+ x2 x1)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (* x4 x3) (+ x4 x3)))))))
* * [misc]simplify:  iters left: 6 (42 enodes)
* * [misc]simplify:  iters left: 5 (131 enodes)
* * [misc]simplify:  iters left: 4 (374 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* x2 x2) (* (- (+ (- x1) (- x3 x4)) x2) (+ (- x1) (- x3 x4)))) (* (+ x4 x3) (- (* x1 x1) (* x2 (- x1 x2))))) (- (* (* x2 (* (- x2 x3) (+ x1 x2))) (+ (* (- x1 x2) (+ (sqr (+ x4 x3)) (* (+ (* x3 x4) (+ x4 x3)) (* x3 x4)))) (- (cube (+ x4 x3)) (cube (* x3 x4))))) (* (* (* (+ x3 x2) (+ x1 x2)) (* x1 (- x2 x3))) (+ (sqr (+ x4 x3)) (* (+ (* x3 x4) (+ x4 x3)) (* x3 x4))))))
* [exit]simplify:  Simplified to (* (* (+ (* x2 x2) (* (- (+ (- x1) (- x3 x4)) x2) (+ (- x1) (- x3 x4)))) (* (+ x4 x3) (- (* x1 x1) (* x2 (- x1 x2))))) (- (* (* x2 (* (- x2 x3) (+ x1 x2))) (+ (* (- x1 x2) (+ (sqr (+ x4 x3)) (* (+ (* x3 x4) (+ x4 x3)) (* x3 x4)))) (- (cube (+ x4 x3)) (cube (* x3 x4))))) (* (* (* (+ x3 x2) (+ x1 x2)) (* x1 (- x2 x3))) (+ (sqr (+ x4 x3)) (* (+ (* x3 x4) (+ x4 x3)) (* x3 x4))))))
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ x3 x4)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (sqr x3) (sqr x4)))) x3))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (- (* (* x2 (+ (* (- (pow x1 3) (pow x2 3)) (+ (+ x3 x4) (* x3 x4))) (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (- x2 x3)) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (61 enodes)
* * [misc]simplify:  iters left: 5 (162 enodes)
* * [misc]simplify:  iters left: 4 (444 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ (* x4 x3) (+ x4 x3)) (- x2 x3)) (+ (* x2 (+ x2 x1)) (sqr x1))) (+ (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* (* x1 x4) (+ x4 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (* x3 (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))))) (* (- (* (* (- x2 x3) x2) (+ (* (- (sqr (+ x4 x3)) (* (* x4 x3) (* x4 x3))) (+ (* x2 (+ x2 x1)) (sqr x1))) (* (+ (* x4 x3) (+ x4 x3)) (- (cube x1) (cube x2))))) (* (* (+ (* x2 (+ x2 x1)) (sqr x1)) (+ (* x4 x3) (+ x4 x3))) (* (* (- x2 x3) (+ x2 x3)) x1))) (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ (* x4 x3) (+ x4 x3)) (- x2 x3)) (+ (* x2 (+ x2 x1)) (sqr x1))) (+ (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* (* x1 x4) (+ x4 x3)) (+ (* x2 x2) (* x1 (- x1 x2))))) (* (* x3 (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))))) (* (- (* (* (- x2 x3) x2) (+ (* (- (sqr (+ x4 x3)) (* (* x4 x3) (* x4 x3))) (+ (* x2 (+ x2 x1)) (sqr x1))) (* (+ (* x4 x3) (+ x4 x3)) (- (cube x1) (cube x2))))) (* (* (+ (* x2 (+ x2 x1)) (sqr x1)) (+ (* x4 x3) (+ x4 x3))) (* (* (- x2 x3) (+ x2 x3)) x1))) (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ x3 x4))) (* (* (+ (sqr x1) (+ (sqr x2) (* x1 x2))) (+ (+ x3 x4) (* x3 x4))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (28 enodes)
* * [misc]simplify:  iters left: 5 (74 enodes)
* * [misc]simplify:  iters left: 4 (223 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (+ x3 x4) (* x4 x3)) (- x2 x3))) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* [exit]simplify:  Simplified to (* (* (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (+ x3 x4) (* x4 x3)) (- x2 x3))) (* (+ x3 x4) (- (* x1 x1) (* x2 (- x1 x2))))) (- (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 x2)) (* (+ (- x3 x4) (- x1)) x2)))
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (69 enodes)
* * [misc]simplify:  iters left: 5 (193 enodes)
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (* (- x1 x2) (+ x2 x1))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))) (* (+ x2 x1) (+ (cube x3) (cube x2)))) x1)) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))))
* [exit]simplify:  Simplified to (+ (* (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* x2 (+ x2 x1)) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (* (- x1 x2) (+ x2 x1))) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* (* (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))) (* (+ x2 x1) (+ (cube x3) (cube x2)))) x1)) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (* (+ x2 x1) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (36 enodes)
* * [misc]simplify:  iters left: 5 (102 enodes)
* * [misc]simplify:  iters left: 4 (277 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x2 x2) (* x3 (- x3 x2))) (+ x2 x1)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))) (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* [enter]simplify:  Simplifying (* (* (exp (* (+ x2 (+ (- x1) (- x3 x4))) (* x4 x1))) (exp (* (- (+ x2 x1) (- x3 x4)) x3))) (/ (exp (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (exp (* (+ x2 x3) x1))))
* * [misc]simplify:  iters left: 6 (28 enodes)
* * [misc]simplify:  iters left: 5 (77 enodes)
* * [misc]simplify:  iters left: 4 (169 enodes)
* * [misc]simplify:  iters left: 3 (353 enodes)
* [exit]simplify:  Simplified to (/ (exp (* (* x1 x4) (- x3 (- (- x4 x2) (- x1))))) (/ (/ (pow (exp x1) (+ x2 x3)) (pow (exp x3) (+ (+ x2 x4) (- x1 x3)))) (pow (exp x2) (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))))
* [exit]simplify:  Simplified to (/ (exp (* (* x1 x4) (- x3 (- (- x4 x2) (- x1))))) (/ (/ (pow (exp x1) (+ x2 x3)) (pow (exp x3) (+ (+ x2 x4) (- x1 x3)))) (pow (exp x2) (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))))
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (sqr (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4))))) (sqr (* (+ x2 x3) x1)))))
* * [misc]simplify:  iters left: 6 (55 enodes)
* * [misc]simplify:  iters left: 5 (149 enodes)
* * [misc]simplify:  iters left: 4 (397 enodes)
* [exit]simplify:  Simplified to (+ (+ (* (- (sqr (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))))) (* (* (+ x2 x3) x1) (* (+ x2 x3) x1))) (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1))))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1))) (+ (* (+ x2 x3) x1) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3)))))))) (* (+ (* (+ x2 x3) x1) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))))) (* (* x3 (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (+ (* x2 x2) (* (- x1 x2) x1)) (- (cube x3) (cube x4)))))))
* [exit]simplify:  Simplified to (+ (+ (* (- (sqr (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))))) (* (* (+ x2 x3) x1) (* (+ x2 x3) x1))) (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1))))) (* (* (* x1 x4) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1))) (+ (* (+ x2 x3) x1) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3)))))))) (* (+ (* (+ x2 x3) x1) (* x2 (+ (+ x3 (- x1 x2)) (- x4 (* x4 x3))))) (* (* x3 (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (+ (* x2 x2) (* (- x1 x2) x1)) (- (cube x3) (cube x4)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (+ (* x2 (+ (- x1 x2) (- (+ x3 x4) (* x3 x4)))) (* (+ x2 x3) x1)))
* * [misc]simplify:  iters left: 6 (32 enodes)
* * [misc]simplify:  iters left: 5 (92 enodes)
* * [misc]simplify:  iters left: 4 (224 enodes)
* [exit]simplify:  Simplified to (* (+ (* x2 (- (+ x3 x4) (- (* x4 x3) (- x1 x2)))) (* (+ x3 x2) x1)) (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2))) (* x2 x2)) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* [exit]simplify:  Simplified to (* (+ (* x2 (- (+ x3 x4) (- (* x4 x3) (- x1 x2)))) (* (+ x3 x2) x1)) (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2))) (* x2 x2)) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* [enter]simplify:  Simplifying (* (* (* (+ x2 x1) (- x2 x3)) (+ (+ x4 x3) (* x4 x3))) (+ (* x3 (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (+ (* x2 x2) (* (- x1 x2) x1)) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)))) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* (- x1 x2) x1)))))))
* * [misc]simplify:  iters left: 6 (44 enodes)
* * [misc]simplify:  iters left: 5 (125 enodes)
* * [misc]simplify:  iters left: 4 (342 enodes)
* [exit]simplify:  Simplified to (+ (* (* (* (+ (* x3 x4) (+ x4 x3)) (* (+ x1 x2) (- x2 x3))) x3) (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (sqr x3))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* (- x1 x2) x1)))) (- (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (+ (- x3 x4) (- x1)) x2)))) (* (+ x1 x2) (* (* (* (+ (* x3 x4) (+ x4 x3)) (- x2 x3)) (+ (* (+ x4 x3) x4) (sqr x3))) (* (* (+ (* x2 x2) (* (- x1 x2) x1)) (* x4 x1)) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))))
* [exit]simplify:  Simplified to (+ (* (* (* (+ (* x3 x4) (+ x4 x3)) (* (+ x1 x2) (- x2 x3))) x3) (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (sqr x3))) (* (- (cube x3) (cube x4)) (+ (* x2 x2) (* (- x1 x2) x1)))) (- (+ (* x2 x2) (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1)))) (* (+ (- x3 x4) (- x1)) x2)))) (* (+ x1 x2) (* (* (* (+ (* x3 x4) (+ x4 x3)) (- x2 x3)) (+ (* (+ x4 x3) x4) (sqr x3))) (* (* (+ (* x2 x2) (* (- x1 x2) x1)) (* x4 x1)) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))))))
* [enter]simplify:  Simplifying (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (+ (* x2 x2) (* (- x1 x2) x1)))) (- (* (* (- x2 x3) x2) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))))) (* (* (- x2 x3) (* (+ x2 x3) x1)) (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))))))
* * [misc]simplify:  iters left: 6 (37 enodes)
* * [misc]simplify:  iters left: 5 (103 enodes)
* * [misc]simplify:  iters left: 4 (311 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x3) (* (+ x4 x3) x4)) (+ (* x1 (- x1 x2)) (* x2 x2))) (+ (- (* (+ (- x1) (- x3 x4)) (+ (- x1) (- x3 x4))) (* (+ (- x1) (- x3 x4)) x2)) (* x2 x2))) (- (* (* (- x2 x3) x2) (* (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))) (* (+ x1 x2) (+ (+ x4 x3) (* x4 x3))))) (* (* (- x2 x3) (+ x3 x2)) (* (* x1 (+ x1 x2)) (+ (+ x4 x3) (* x4 x3))))))
* [exit]simplify:  Simplified to (* (* (* (+ (* x3 x3) (* (+ x4 x3) x4)) (+ (* x1 (- x1 x2)) (* x2 x2))) (+ (- (* (+ (- x1) (- x3 x4)) (+ (- x1) (- x3 x4))) (* (+ (- x1) (- x3 x4)) x2)) (* x2 x2))) (- (* (* (- x2 x3) x2) (* (+ (- x1 x2) (- (+ x4 x3) (* x4 x3))) (* (+ x1 x2) (+ (+ x4 x3) (* x4 x3))))) (* (* (- x2 x3) (+ x3 x2)) (* (* x1 (+ x1 x2)) (+ (+ x4 x3) (* x4 x3))))))
* [enter]simplify:  Simplifying (+ (- (* x2 (- (+ (+ x3 x4) (- x1 x2)) (* x3 x4))) (- (* (+ x2 x3) x1) (* x3 (+ (+ x4 x2) (- x1 x3))))) (* (* x1 x4) (- (+ x2 x3) (- x4 (- x1)))))
* * [misc]simplify:  iters left: 6 (24 enodes)
* * [misc]simplify:  iters left: 5 (57 enodes)
* * [misc]simplify:  iters left: 4 (121 enodes)
* * [misc]simplify:  iters left: 3 (200 enodes)
* * [misc]simplify:  iters left: 2 (301 enodes)
* * [misc]simplify:  iters left: 1 (466 enodes)
* [exit]simplify:  Simplified to (- (+ (* x2 (- (- (+ x3 x1) (- x2 x4)) (* x4 x3))) (* (+ x3 (+ (- x2 x4) (- x1))) (* x4 x1))) (- (* (+ x3 x2) x1) (* (+ (+ x1 x2) (- x4 x3)) x3)))
* [exit]simplify:  Simplified to (- (+ (* x2 (- (- (+ x3 x1) (- x2 x4)) (* x4 x3))) (* (+ x3 (+ (- x2 x4) (- x1))) (* x4 x1))) (- (* (+ x3 x2) x1) (* (+ (+ x1 x2) (- x4 x3)) x3)))
* [enter]simplify:  Simplifying (* (+ (sqr (- x1 x2)) (* (- (- (+ x3 x4) (* x4 x3)) (- x1 x2)) (- (+ x3 x4) (* x4 x3)))) (- (* x3 x3) (* x2 (- x3 x2))))
* * [misc]simplify:  iters left: 6 (17 enodes)
* * [misc]simplify:  iters left: 5 (31 enodes)
* * [misc]simplify:  iters left: 4 (64 enodes)
* * [misc]simplify:  iters left: 3 (160 enodes)
* * [misc]simplify:  iters left: 2 (343 enodes)
* [exit]simplify:  Simplified to (* (+ (* (- (+ x3 x4) (* x4 x3)) (+ (+ x2 (- x3 x1)) (- x4 (* x4 x3)))) (* (- x1 x2) (- x1 x2))) (- (* x3 x3) (* (- x3 x2) x2)))
* [exit]simplify:  Simplified to (* (+ (* (- (+ x3 x4) (* x4 x3)) (+ (+ x2 (- x3 x1)) (- x4 (* x4 x3)))) (* (- x1 x2) (- x1 x2))) (- (* x3 x3) (* (- x3 x2) x2)))
* [enter]simplify:  Simplifying (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2))) (* x2 x2)) (* (- (* x1 x1) (* x2 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4)))))
* * [misc]simplify:  iters left: 6 (22 enodes)
* * [misc]simplify:  iters left: 5 (58 enodes)
* * [misc]simplify:  iters left: 4 (125 enodes)
* * [misc]simplify:  iters left: 3 (239 enodes)
* * [misc]simplify:  iters left: 2 (454 enodes)
* [exit]simplify:  Simplified to (* (+ (+ (* (+ (- x1) (- x3 x4)) (- x1)) (* x2 x2)) (* (+ (- x1) (- x3 x4)) (- (- x3 x4) x2))) (* (- (sqr x1) (* (- x1 x2) x2)) (+ (* (+ x4 x3) x3) (sqr x4))))
* [exit]simplify:  Simplified to (* (+ (+ (* (+ (- x1) (- x3 x4)) (- x1)) (* x2 x2)) (* (+ (- x1) (- x3 x4)) (- (- x3 x4) x2))) (* (- (sqr x1) (* (- x1 x2) x2)) (+ (* (+ x4 x3) x3) (sqr x4))))
* [enter]simplify:  Simplifying (* (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* x2 (+ (* x2 (+ x2 x1)) (sqr x1))) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* x2 (- (cube x1) (cube x2))) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))))))) (* (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (* (+ (* x2 (+ x2 x1)) (sqr x1)) (* (+ (cube x3) (cube x2)) x1)))) (* (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))))
* * [misc]simplify:  iters left: 6 (48 enodes)
* * [misc]simplify:  iters left: 5 (137 enodes)
* * [misc]simplify:  iters left: 4 (400 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ x3 (- x1)) (+ x4 x2))) (sqr x2)) (* (+ x4 x3) (+ (sqr x2) (* (- x1 x2) x1)))) (+ (* (+ (* (+ (* x3 x4) (+ x4 x3)) (* x3 x4)) (* (+ x4 x3) (+ x4 x3))) (* (+ (* x3 (- x3 x2)) (sqr x2)) (* (- (cube x1) (cube x2)) x2))) (- (* (+ (* (+ x1 x2) (sqr x2)) (* (* x1 x1) x2)) (* (+ (* x3 (- x3 x2)) (sqr x2)) (- (cube (+ x4 x3)) (cube (* x3 x4))))) (* (+ (* (+ (* x3 x4) (+ x4 x3)) (* x3 x4)) (* (+ x4 x3) (+ x4 x3))) (* (* x1 (+ (cube x2) (cube x3))) (+ (* x1 x1) (* (+ x1 x2) x2)))))))
* [exit]simplify:  Simplified to (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ x3 (- x1)) (+ x4 x2))) (sqr x2)) (* (+ x4 x3) (+ (sqr x2) (* (- x1 x2) x1)))) (+ (* (+ (* (+ (* x3 x4) (+ x4 x3)) (* x3 x4)) (* (+ x4 x3) (+ x4 x3))) (* (+ (* x3 (- x3 x2)) (sqr x2)) (* (- (cube x1) (cube x2)) x2))) (- (* (+ (* (+ x1 x2) (sqr x2)) (* (* x1 x1) x2)) (* (+ (* x3 (- x3 x2)) (sqr x2)) (- (cube (+ x4 x3)) (cube (* x3 x4))))) (* (+ (* (+ (* x3 x4) (+ x4 x3)) (* x3 x4)) (* (+ x4 x3) (+ x4 x3))) (* (* x1 (+ (cube x2) (cube x3))) (+ (* x1 x1) (* (+ x1 x2) x2)))))))
* [enter]simplify:  Simplifying (* (* (+ (* x2 (+ x2 x1)) (sqr x1)) (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (sqr (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))))) (+ (* (+ x4 x3) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2)))))) (* (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (+ (* x2 x2) (* x1 (- x1 x2)))))) x3)))
* * [misc]simplify:  iters left: 6 (48 enodes)
* * [misc]simplify:  iters left: 5 (136 enodes)
* * [misc]simplify:  iters left: 4 (390 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ x4 x3) (* (+ (cube (+ (- x3 x4) (- x1))) (cube x2)) (* (* x4 x1) (+ (* (- x1 x2) x1) (* x2 x2))))) (* (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (* (+ (* x2 x2) (* (- x3 x2) x3)) (+ (* x2 (+ x1 x2)) (sqr x1))))) (* (* (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (* (- x3 x4) (+ x4 x3)) (+ (* (- x1 x2) x1) (* x2 x2)))) x3) (* (* (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (* (+ (* x2 x2) (* (- x3 x2) x3)) (+ (* x2 (+ x1 x2)) (sqr x1)))) (+ (* x2 x2) (* (+ (- x3 x4) (- (- x1) x2)) (+ (- x3 x4) (- x1)))))))
* [exit]simplify:  Simplified to (+ (* (* (+ x4 x3) (* (+ (cube (+ (- x3 x4) (- x1))) (cube x2)) (* (* x4 x1) (+ (* (- x1 x2) x1) (* x2 x2))))) (* (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (* (+ (* x2 x2) (* (- x3 x2) x3)) (+ (* x2 (+ x1 x2)) (sqr x1))))) (* (* (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (* (- x3 x4) (+ x4 x3)) (+ (* (- x1 x2) x1) (* x2 x2)))) x3) (* (* (+ (* (+ x4 x3) (+ x4 x3)) (* (* x4 x3) (+ (+ x4 x3) (* x4 x3)))) (* (+ (* x2 x2) (* (- x3 x2) x3)) (+ (* x2 (+ x1 x2)) (sqr x1)))) (+ (* x2 x2) (* (+ (- x3 x4) (- (- x1) x2)) (+ (- x3 x4) (- x1)))))))
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3))))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (+ x3 x4) (* x3 x4))) (* (+ x1 x2) (- (sqr (+ x3 x4)) (sqr (* x3 x4)))))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (* (+ (pow x2 3) (pow x3 3)) x1)))))
* * [misc]simplify:  iters left: 6 (65 enodes)
* * [misc]simplify:  iters left: 5 (186 enodes)
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2)))) (* (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* (+ (+ x4 x3) (* x4 x3)) (* (- x1 x2) (+ x2 x1))) x2) (* (* x2 (+ x2 x1)) (* (- (+ x4 x3) (* x4 x3)) (+ (+ x4 x3) (* x4 x3)))))) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (* x1 (+ (cube x3) (cube x2))))) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))))
* [exit]simplify:  Simplified to (+ (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* x4 (+ x4 x3)) (* x3 x3))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2))) x3) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (+ (* x2 x2) (* x1 (- x1 x2))))))) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2)))) (* (- (* (+ (* x3 (- x3 x2)) (* x2 x2)) (+ (* (* (+ (+ x4 x3) (* x4 x3)) (* (- x1 x2) (+ x2 x1))) x2) (* (* x2 (+ x2 x1)) (* (- (+ x4 x3) (* x4 x3)) (+ (+ x4 x3) (* x4 x3)))))) (* (* (+ x2 x1) (+ (+ x4 x3) (* x4 x3))) (* x1 (+ (cube x3) (cube x2))))) (* (+ (* (+ (- x3 x4) (- x1)) (- (+ (- x3 x4) (- x1)) x2)) (* x2 x2)) (* (+ (* x4 (+ x4 x3)) (* x3 x3)) (+ (* x2 x2) (* x1 (- x1 x2)))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (+ x3 x4) (* x3 x4))) (+ (sqr x2) (- (sqr x3) (* x2 x3)))))
* * [misc]simplify:  iters left: 6 (32 enodes)
* * [misc]simplify:  iters left: 5 (92 enodes)
* * [misc]simplify:  iters left: 4 (272 enodes)
* [exit]simplify:  Simplified to (* (* (* (+ x2 x1) (+ (+ x3 x4) (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2))) (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* [exit]simplify:  Simplified to (* (* (* (+ x2 x1) (+ (+ x3 x4) (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2))) (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x1) (- (- x3 x4) x2)))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 x3) (* x4 (+ x3 x4))))))
* [enter]simplify:  Simplifying (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (- (sqr x1) (* x2 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) x3) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2))))) (+ (* (+ x4 x3) x4) (* x3 x3)))) (* (- (- x1 x2) (- (+ x4 x3) (* x4 x3))) (+ (* x3 (- x3 x2)) (* x2 x2))))
* * [misc]simplify:  iters left: 6 (46 enodes)
* * [misc]simplify:  iters left: 5 (123 enodes)
* * [misc]simplify:  iters left: 4 (277 enodes)
* [exit]simplify:  Simplified to (* (+ (* (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (* x1 x1) (* (- x1 x2) x2)) (- (cube x3) (cube x4)))) (* x3 (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* (+ (- x3 x4) (- x1)) x2)))) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (+ (* x3 x3) (* x4 (+ x3 x4)))) (* (- (* x1 x1) (* (- x1 x2) x2)) (* x4 x1)))) (* (+ (* x2 x2) (* (- x3 x2) x3)) (+ (* x3 x4) (- (- x1 x2) (+ x3 x4)))))
* [exit]simplify:  Simplified to (* (+ (* (- (* (+ (* x3 x3) (* x4 (+ x3 x4))) (+ (cube x2) (cube x1))) (* (- (* x1 x1) (* (- x1 x2) x2)) (- (cube x3) (cube x4)))) (* x3 (- (+ (* x2 x2) (sqr (+ (- x3 x4) (- x1)))) (* (+ (- x3 x4) (- x1)) x2)))) (* (* (+ (cube x2) (cube (+ (- x3 x4) (- x1)))) (+ (* x3 x3) (* x4 (+ x3 x4)))) (* (- (* x1 x1) (* (- x1 x2) x2)) (* x4 x1)))) (* (+ (* x2 x2) (* (- x3 x2) x3)) (+ (* x3 x4) (- (- x1 x2) (+ x3 x4)))))
* [enter]simplify:  Simplifying (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2))))) (- (* (* (- (* (- x1 x2) (- x1 x2)) (sqr (- (+ x4 x3) (* x4 x3)))) (+ (* x3 (- x3 x2)) (* x2 x2))) x2) (* (* (+ (cube x3) (cube x2)) x1) (- (- x1 x2) (- (+ x4 x3) (* x4 x3))))))
* * [misc]simplify:  iters left: 6 (40 enodes)
* * [misc]simplify:  iters left: 5 (91 enodes)
* * [misc]simplify:  iters left: 4 (190 enodes)
* * [misc]simplify:  iters left: 3 (456 enodes)
* [exit]simplify:  Simplified to (* (* (+ (* (+ (- (- x3 x4) x2) (- x1)) (+ (- x1) (- x3 x4))) (* x2 x2)) (* (+ (* x3 x3) (* (+ x4 x3) x4)) (- (sqr x1) (* (- x1 x2) x2)))) (* (+ (* x4 x3) (- (- x1 x2) (+ x4 x3))) (- (* (+ (cube x2) (* (- x3 x2) (* x3 x2))) (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* (+ (cube x3) (cube x2)) x1))))
* [exit]simplify:  Simplified to (* (* (+ (* (+ (- (- x3 x4) x2) (- x1)) (+ (- x1) (- x3 x4))) (* x2 x2)) (* (+ (* x3 x3) (* (+ x4 x3) x4)) (- (sqr x1) (* (- x1 x2) x2)))) (* (+ (* x4 x3) (- (- x1 x2) (+ x4 x3))) (- (* (+ (cube x2) (* (- x3 x2) (* x3 x2))) (+ (- x1 x2) (- (+ x4 x3) (* x4 x3)))) (* (+ (cube x3) (cube x2)) x1))))
* [enter]simplify:  Simplifying (* (+ (* x1 x1) (* x2 (+ x2 x1))) (* (+ (sqr (+ x3 x4)) (* (* x4 x3) (+ (+ x3 x4) (* x4 x3)))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (17 enodes)
* * [misc]simplify:  iters left: 5 (42 enodes)
* * [misc]simplify:  iters left: 4 (105 enodes)
* * [misc]simplify:  iters left: 3 (253 enodes)
* [exit]simplify:  Simplified to (* (+ (* (+ (+ x3 x4) (* x4 x3)) (* x4 x3)) (sqr (+ x3 x4))) (* (+ (* x1 x1) (* x2 (+ x1 x2))) (- x2 x3)))
* [exit]simplify:  Simplified to (* (+ (* (+ (+ x3 x4) (* x4 x3)) (* x4 x3)) (sqr (+ x3 x4))) (* (+ (* x1 x1) (* x2 (+ x1 x2))) (- x2 x3)))
* [enter]simplify:  Simplifying (* (+ (* (+ (- x3 x4) (- x1)) (+ (- x1) (- (- x3 x4) x2))) (* x2 x2)) (* (+ x3 x4) (+ (* x2 x2) (* (- x1 x2) x1))))
* * [misc]simplify:  iters left: 6 (18 enodes)
* * [misc]simplify:  iters left: 5 (46 enodes)
* * [misc]simplify:  iters left: 4 (142 enodes)
* * [misc]simplify:  iters left: 3 (331 enodes)
* [exit]simplify:  Simplified to (* (+ (* (- x3 (- (+ x2 x4) (- x1))) (+ (- x1) (- x3 x4))) (* x2 x2)) (* (+ (* (- x1 x2) x1) (* x2 x2)) (+ x4 x3)))
* [exit]simplify:  Simplified to (* (+ (* (- x3 (- (+ x2 x4) (- x1))) (+ (- x1) (- x3 x4))) (* x2 x2)) (* (+ (* (- x1 x2) x1) (* x2 x2)) (+ x4 x3)))
* [enter]simplify:  Simplifying (* (* (* (- x2 x3) (+ x2 x1)) (+ (* x4 x3) (+ x4 x3))) (+ (* (* (* (* x1 x4) (+ x4 x3)) (- (sqr x1) (* x2 (- x1 x2)))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (* x3 (* (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1)))) (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (- (* x3 x3) (* x4 x4)) (- (sqr x1) (* x2 (- x1 x2)))))))))
* * [misc]simplify:  iters left: 6 (42 enodes)
* * [misc]simplify:  iters left: 5 (123 enodes)
* * [misc]simplify:  iters left: 4 (307 enodes)
* [exit]simplify:  Simplified to (* (+ (* (+ (cube (+ (- x1) (- x3 x4))) (cube x2)) (* (* (+ x4 x3) (* x1 x4)) (- (sqr x1) (* (- x1 x2) x2)))) (* (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (* (- x3 x4) (+ x4 x3)) (- (sqr x1) (* (- x1 x2) x2)))) (+ (* (* x3 x2) (- x2 (+ (- x1) (- x3 x4)))) (* (* x3 (+ (- x1) (- x3 x4))) (+ (- x1) (- x3 x4)))))) (* (+ (+ x4 x3) (* x4 x3)) (* (- x2 x3) (+ x2 x1))))
* [exit]simplify:  Simplified to (* (+ (* (+ (cube (+ (- x1) (- x3 x4))) (cube x2)) (* (* (+ x4 x3) (* x1 x4)) (- (sqr x1) (* (- x1 x2) x2)))) (* (- (* (+ x4 x3) (+ (cube x1) (cube x2))) (* (* (- x3 x4) (+ x4 x3)) (- (sqr x1) (* (- x1 x2) x2)))) (+ (* (* x3 x2) (- x2 (+ (- x1) (- x3 x4)))) (* (* x3 (+ (- x1) (- x3 x4))) (+ (- x1) (- x3 x4)))))) (* (+ (+ x4 x3) (* x4 x3)) (* (- x2 x3) (+ x2 x1))))
* [enter]simplify:  Simplifying (* (- (* (* x2 (- x2 x3)) (* (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3))) (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2)))) (* (* x1 (* (- x2 x3) (+ x2 x3))) (* (+ x2 x1) (+ (* x4 x3) (+ x4 x3))))) (* (* (- (sqr x1) (* x2 (- x1 x2))) (+ x4 x3)) (- (+ (sqr (+ (- x3 x4) (- x1))) (* x2 x2)) (* x2 (+ (- x3 x4) (- x1))))))
* * [misc]simplify:  iters left: 6 (35 enodes)
* * [misc]simplify:  iters left: 5 (103 enodes)
* * [misc]simplify:  iters left: 4 (268 enodes)
* [exit]simplify:  Simplified to (* (- (* (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2)) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x1 x2)) (* x2 (- x2 x3)))) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x1 x2)) (* x1 (* (+ x3 x2) (- x2 x3))))) (* (* (- (* x1 x1) (* x2 (- x1 x2))) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- x2 (+ (- x3 x4) (- x1)))))))
* [exit]simplify:  Simplified to (* (- (* (+ (- (+ x4 x3) (* x4 x3)) (- x1 x2)) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x1 x2)) (* x2 (- x2 x3)))) (* (* (+ (+ x4 x3) (* x4 x3)) (+ x1 x2)) (* x1 (* (+ x3 x2) (- x2 x3))))) (* (* (- (* x1 x1) (* x2 (- x1 x2))) (+ x4 x3)) (+ (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (- x2 (+ (- x3 x4) (- x1)))))))
* [enter]simplify:  Simplifying (+ (* (+ (* (* (+ (pow x2 3) (pow (+ (- x1) (- x3 x4)) 3)) (* x4 x1)) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (- (* (+ (pow x2 3) (pow x1 3)) (+ (sqr x3) (+ (sqr x4) (* x3 x4)))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (- (pow x3 3) (pow x4 3)))) x3))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3))) (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (- (* (* x2 (+ (* (- (sqr x1) (sqr x2)) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (+ x1 x2) (- (pow (+ x3 x4) 3) (pow (* x3 x4) 3))))) (- x2 x3)) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (* (- (sqr x2) (sqr x3)) x1)))))
* * [misc]simplify:  iters left: 6 (67 enodes)
* * [misc]simplify:  iters left: 5 (176 enodes)
* * [misc]simplify:  iters left: 4 (468 enodes)
* [exit]simplify:  Simplified to (+ (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2))))) (- (* (* x2 (- x2 x3)) (+ (* (+ x2 x1) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* (- x1 x2) (+ x2 x1)) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* (* (* (- x2 x3) (* x1 (+ x2 x3))) (+ x2 x1)) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (- (sqr x1) (* x2 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) x3) (* (* (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2)))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (* (+ x4 x3) x4) (* x3 x3)))) (* (* (+ x2 x1) (- x2 x3)) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))))))
* [exit]simplify:  Simplified to (+ (* (* (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2)) (* (+ (* (+ x4 x3) x4) (* x3 x3)) (- (sqr x1) (* x2 (- x1 x2))))) (- (* (* x2 (- x2 x3)) (+ (* (+ x2 x1) (- (cube (+ x4 x3)) (cube (* x4 x3)))) (* (* (- x1 x2) (+ x2 x1)) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* (* (* (- x2 x3) (* x1 (+ x2 x3))) (+ x2 x1)) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3)))))) (* (+ (* (* (- (* (+ (cube x1) (cube x2)) (+ (* (+ x4 x3) x4) (* x3 x3))) (* (- (sqr x1) (* x2 (- x1 x2))) (- (cube x3) (cube x4)))) (+ (- (sqr (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- x1)))) (* x2 x2))) x3) (* (* (* (* x1 x4) (- (sqr x1) (* x2 (- x1 x2)))) (+ (cube x2) (cube (+ (- x3 x4) (- x1))))) (+ (* (+ x4 x3) x4) (* x3 x3)))) (* (* (+ x2 x1) (- x2 x3)) (+ (* (* x4 x3) (+ (+ x4 x3) (* x4 x3))) (* (+ x4 x3) (+ x4 x3))))))
* [enter]simplify:  Simplifying (* (* (+ (sqr x2) (- (sqr (+ (- x1) (- x3 x4))) (* x2 (+ (- x1) (- x3 x4))))) (* (+ (sqr x2) (- (sqr x1) (* x2 x1))) (+ (sqr x3) (+ (sqr x4) (* x3 x4))))) (* (* (+ x1 x2) (+ (sqr (+ x3 x4)) (+ (sqr (* x3 x4)) (* (+ x3 x4) (* x3 x4))))) (- x2 x3)))
* * [misc]simplify:  iters left: 6 (34 enodes)
* * [misc]simplify:  iters left: 5 (90 enodes)
* * [misc]simplify:  iters left: 4 (240 enodes)
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2)))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 (+ x3 x4)) (* x4 x4)))) (* (* (+ x2 x1) (- x2 x3)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))))
* [exit]simplify:  Simplified to (* (* (- (* (+ (- x3 x4) (- x1)) (+ (- x3 x4) (- x1))) (* x2 (+ (- x3 x4) (- (- x1) x2)))) (* (+ (* x2 x2) (* x1 (- x1 x2))) (+ (* x3 (+ x3 x4)) (* x4 x4)))) (* (* (+ x2 x1) (- x2 x3)) (+ (* (* x4 x3) (+ (* x4 x3) (+ x3 x4))) (* (+ x3 x4) (+ x3 x4)))))