* [misc]progress:  [Phase 1 of 3] Setting up.
* * * [misc]progress:  [1/2] Preparing points
* * * [misc]progress:  [2/2] Setting up program.
* [enter]simplify:  Simplifying (/ (- x y) (* (* x 2.0) y))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (28 enodes)
* * [misc]simplify:  iters left: 3 (44 enodes)
* * [misc]simplify:  iters left: 2 (54 enodes)
* * [misc]simplify:  iters left: 1 (89 enodes)
* [exit]simplify:  Simplified to (/ (/ (- x y) x) (* 2.0 y))
* [misc]progress:  [Phase 2 of 3] Improving.
* * [misc]progress:  iteration 1 / 3
* * * [misc]progress:  picking best candidate
* * * * [misc]pick:  Picked  #<alt-event (λ (x y) (/ (- x y) (* (* x 2.0) y)))>
* * * [misc]progress:  localizing error
* * * [misc]progress:  generating series expansions
* * * * [misc]progress:  [ 1 / 1 ] generating series at (2)
* [misc]approximate:  Taking taylor expansion of (/ (- x y) (* (* x 2.0) y)) in (x y) around 0
* [misc]taylor:  Taking taylor expansion of (/ (- x y) (* (* x 2.0) y)) in y
* [misc]taylor:  Taking taylor expansion of (- x y) in y
* [misc]taylor:  Taking taylor expansion of x in y
* [misc]backup-simplify:  Simplify x into x
* [misc]taylor:  Taking taylor expansion of y in y
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (* (* x 2.0) y) in y
* [misc]taylor:  Taking taylor expansion of (* x 2.0) in y
* [misc]taylor:  Taking taylor expansion of x in y
* [misc]backup-simplify:  Simplify x into x
* [misc]taylor:  Taking taylor expansion of 2.0 in y
* [misc]backup-simplify:  Simplify 2.0 into 2.0
* [misc]taylor:  Taking taylor expansion of y in y
* [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 (+ x 0) into x
* [misc]backup-simplify:  Simplify (* x 2.0) into (* 2.0 x)
* [misc]backup-simplify:  Simplify (* (* 2.0 x) 0) into 0
* [misc]backup-simplify:  Simplify (+ (* x 0) (* 0 2.0)) into 0
* [misc]backup-simplify:  Simplify (+ (* (* 2.0 x) 1) (* 0 0)) into (* 2.0 x)
* [misc]backup-simplify:  Simplify (/ x (* 2.0 x)) into 0.5
* [misc]taylor:  Taking taylor expansion of (/ (- x y) (* (* x 2.0) y)) in x
* [misc]taylor:  Taking taylor expansion of (- x y) in x
* [misc]taylor:  Taking taylor expansion of x in x
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of y in x
* [misc]backup-simplify:  Simplify y into y
* [misc]taylor:  Taking taylor expansion of (* (* x 2.0) y) in x
* [misc]taylor:  Taking taylor expansion of (* x 2.0) in x
* [misc]taylor:  Taking taylor expansion of x in x
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of 2.0 in x
* [misc]backup-simplify:  Simplify 2.0 into 2.0
* [misc]taylor:  Taking taylor expansion of y in x
* [misc]backup-simplify:  Simplify y into y
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (+ 0 (- y)) into (- y)
* [misc]backup-simplify:  Simplify (* 0 2.0) into 0
* [misc]backup-simplify:  Simplify (* 0 y) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 2.0)) into 2.0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 2.0 y)) into (* 2.0 y)
* [misc]backup-simplify:  Simplify (/ (- y) (* 2.0 y)) into -0.5
* [misc]taylor:  Taking taylor expansion of (/ (- x y) (* (* x 2.0) y)) in x
* [misc]taylor:  Taking taylor expansion of (- x y) in x
* [misc]taylor:  Taking taylor expansion of x in x
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of y in x
* [misc]backup-simplify:  Simplify y into y
* [misc]taylor:  Taking taylor expansion of (* (* x 2.0) y) in x
* [misc]taylor:  Taking taylor expansion of (* x 2.0) in x
* [misc]taylor:  Taking taylor expansion of x in x
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of 2.0 in x
* [misc]backup-simplify:  Simplify 2.0 into 2.0
* [misc]taylor:  Taking taylor expansion of y in x
* [misc]backup-simplify:  Simplify y into y
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (+ 0 (- y)) into (- y)
* [misc]backup-simplify:  Simplify (* 0 2.0) into 0
* [misc]backup-simplify:  Simplify (* 0 y) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 1 2.0)) into 2.0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (* 2.0 y)) into (* 2.0 y)
* [misc]backup-simplify:  Simplify (/ (- y) (* 2.0 y)) into -0.5
* [misc]taylor:  Taking taylor expansion of -0.5 in y
* [misc]backup-simplify:  Simplify -0.5 into -0.5
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (* 0 2.0))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 2.0 0) (* 0 y))) into 0
* [misc]backup-simplify:  Simplify (- (/ 1 (* 2.0 y)) (+ (* -0.5 (/ 0 (* 2.0 y))))) into (* 0.5 (/ 1 y))
* [misc]taylor:  Taking taylor expansion of (* 0.5 (/ 1 y)) in y
* [misc]taylor:  Taking taylor expansion of 0.5 in y
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 1 y) in y
* [misc]taylor:  Taking taylor expansion of y in y
* [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 (* 0.5 1) into 0.5
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]backup-simplify:  Simplify -0.5 into -0.5
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 2.0)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 2.0 0) (+ (* 0 0) (* 0 y)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 (* 2.0 y)) (+ (* -0.5 (/ 0 (* 2.0 y))) (* (* 0.5 (/ 1 y)) (/ 0 (* 2.0 y))))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in y
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0.5 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 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 2.0))))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 2.0 0) (+ (* 0 0) (+ (* 0 0) (* 0 y))))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 (* 2.0 y)) (+ (* -0.5 (/ 0 (* 2.0 y))) (* (* 0.5 (/ 1 y)) (/ 0 (* 2.0 y))) (* 0 (/ 0 (* 2.0 y))))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in y
* [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 (+ (* 0.5 0) (+ (* 0 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 0) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 2.0)))))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0 0) (+ (* 2.0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 (* 2.0 y)) (+ (* -0.5 (/ 0 (* 2.0 y))) (* (* 0.5 (/ 1 y)) (/ 0 (* 2.0 y))) (* 0 (/ 0 (* 2.0 y))) (* 0 (/ 0 (* 2.0 y))))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in y
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* -0.5 (* 1 (/ 1 x))) (* 0.5 (* (/ 1 y) 1))) into (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
* [misc]approximate:  Taking taylor expansion of (/ (- (/ 1 x) (/ 1 y)) (* (* (/ 1 x) 2.0) (/ 1 y))) in (x y) around 0
* [misc]taylor:  Taking taylor expansion of (/ (- (/ 1 x) (/ 1 y)) (* (* (/ 1 x) 2.0) (/ 1 y))) in y
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in y
* [misc]taylor:  Taking taylor expansion of (/ 1 x) in y
* [misc]taylor:  Taking taylor expansion of x in y
* [misc]backup-simplify:  Simplify x into x
* [misc]backup-simplify:  Simplify (/ 1 x) into (/ 1 x)
* [misc]taylor:  Taking taylor expansion of (/ 1 y) in y
* [misc]taylor:  Taking taylor expansion of y in y
* [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 x) 2.0) (/ 1 y)) in y
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x) 2.0) in y
* [misc]taylor:  Taking taylor expansion of (/ 1 x) in y
* [misc]taylor:  Taking taylor expansion of x in y
* [misc]backup-simplify:  Simplify x into x
* [misc]backup-simplify:  Simplify (/ 1 x) into (/ 1 x)
* [misc]taylor:  Taking taylor expansion of 2.0 in y
* [misc]backup-simplify:  Simplify 2.0 into 2.0
* [misc]taylor:  Taking taylor expansion of (/ 1 y) in y
* [misc]taylor:  Taking taylor expansion of y in y
* [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 x) 2.0) into (/ 2.0 x)
* [misc]backup-simplify:  Simplify (* (/ 2.0 x) 1) into (/ 2.0 x)
* [misc]backup-simplify:  Simplify (/ -1 (/ 2.0 x)) into (* -0.5 x)
* [misc]taylor:  Taking taylor expansion of (/ (- (/ 1 x) (/ 1 y)) (* (* (/ 1 x) 2.0) (/ 1 y))) in x
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
* [misc]taylor:  Taking taylor expansion of (/ 1 x) in x
* [misc]taylor:  Taking taylor expansion of x in x
* [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 y) in x
* [misc]taylor:  Taking taylor expansion of y in x
* [misc]backup-simplify:  Simplify y into y
* [misc]backup-simplify:  Simplify (/ 1 y) into (/ 1 y)
* [misc]taylor:  Taking taylor expansion of (* (* (/ 1 x) 2.0) (/ 1 y)) in x
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x) 2.0) in x
* [misc]taylor:  Taking taylor expansion of (/ 1 x) in x
* [misc]taylor:  Taking taylor expansion of x in x
* [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 2.0 in x
* [misc]backup-simplify:  Simplify 2.0 into 2.0
* [misc]taylor:  Taking taylor expansion of (/ 1 y) in x
* [misc]taylor:  Taking taylor expansion of y in x
* [misc]backup-simplify:  Simplify y into y
* [misc]backup-simplify:  Simplify (/ 1 y) into (/ 1 y)
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* 1 2.0) into 2.0
* [misc]backup-simplify:  Simplify (* 2.0 (/ 1 y)) into (/ 2.0 y)
* [misc]backup-simplify:  Simplify (/ 1 (/ 2.0 y)) into (* 0.5 y)
* [misc]taylor:  Taking taylor expansion of (/ (- (/ 1 x) (/ 1 y)) (* (* (/ 1 x) 2.0) (/ 1 y))) in x
* [misc]taylor:  Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
* [misc]taylor:  Taking taylor expansion of (/ 1 x) in x
* [misc]taylor:  Taking taylor expansion of x in x
* [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 y) in x
* [misc]taylor:  Taking taylor expansion of y in x
* [misc]backup-simplify:  Simplify y into y
* [misc]backup-simplify:  Simplify (/ 1 y) into (/ 1 y)
* [misc]taylor:  Taking taylor expansion of (* (* (/ 1 x) 2.0) (/ 1 y)) in x
* [misc]taylor:  Taking taylor expansion of (* (/ 1 x) 2.0) in x
* [misc]taylor:  Taking taylor expansion of (/ 1 x) in x
* [misc]taylor:  Taking taylor expansion of x in x
* [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 2.0 in x
* [misc]backup-simplify:  Simplify 2.0 into 2.0
* [misc]taylor:  Taking taylor expansion of (/ 1 y) in x
* [misc]taylor:  Taking taylor expansion of y in x
* [misc]backup-simplify:  Simplify y into y
* [misc]backup-simplify:  Simplify (/ 1 y) into (/ 1 y)
* [misc]backup-simplify:  Simplify (+ 1 0) into 1
* [misc]backup-simplify:  Simplify (* 1 2.0) into 2.0
* [misc]backup-simplify:  Simplify (* 2.0 (/ 1 y)) into (/ 2.0 y)
* [misc]backup-simplify:  Simplify (/ 1 (/ 2.0 y)) into (* 0.5 y)
* [misc]taylor:  Taking taylor expansion of (* 0.5 y) in y
* [misc]taylor:  Taking taylor expansion of 0.5 in y
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of y in y
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0.5 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 1 y)) into (- (/ 1 y))
* [misc]backup-simplify:  Simplify (+ 0 (- (/ 1 y))) into (- (/ 1 y))
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (* 0 2.0)) into 0
* [misc]backup-simplify:  Simplify (+ (* 2.0 0) (* 0 (/ 1 y))) into 0
* [misc]backup-simplify:  Simplify (- (/ (- (/ 1 y)) (/ 2.0 y)) (+ (* (* 0.5 y) (/ 0 (/ 2.0 y))))) into (- 0.5)
* [misc]taylor:  Taking taylor expansion of (- 0.5) in y
* [misc]taylor:  Taking taylor expansion of 0.5 in y
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]backup-simplify:  Simplify (- 0.5) into (- 0.5)
* [misc]backup-simplify:  Simplify (- 0.5) into (- 0.5)
* [misc]backup-simplify:  Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 1 0) (+ (* 0 0) (* 0 2.0))) into 0
* [misc]backup-simplify:  Simplify (+ (* 2.0 0) (+ (* 0 0) (* 0 (/ 1 y)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 (/ 2.0 y)) (+ (* (* 0.5 y) (/ 0 (/ 2.0 y))) (* (- 0.5) (/ 0 (/ 2.0 y))))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in y
* [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 (+ (* 0.5 0) (+ (* 0 1) (* 0 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 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) 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 2.0)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 2.0 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 y))))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 (/ 2.0 y)) (+ (* (* 0.5 y) (/ 0 (/ 2.0 y))) (* (- 0.5) (/ 0 (/ 2.0 y))) (* 0 (/ 0 (/ 2.0 y))))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in y
* [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 (+ (* 0.5 (* (/ 1 y) 1)) (* (- 0.5) (* 1 (/ 1 x)))) into (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
* [misc]approximate:  Taking taylor expansion of (/ (- (/ 1 (- x)) (/ 1 (- y))) (* (* (/ 1 (- x)) 2.0) (/ 1 (- y)))) in (x y) around 0
* [misc]taylor:  Taking taylor expansion of (/ (- (/ 1 (- x)) (/ 1 (- y))) (* (* (/ 1 (- x)) 2.0) (/ 1 (- y)))) in y
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x)) (/ 1 (- y))) in y
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x)) in y
* [misc]taylor:  Taking taylor expansion of (- x) in y
* [misc]taylor:  Taking taylor expansion of x in y
* [misc]backup-simplify:  Simplify x into x
* [misc]backup-simplify:  Simplify (- x) into (- x)
* [misc]backup-simplify:  Simplify (- x) into (- x)
* [misc]backup-simplify:  Simplify (/ 1 (- x)) into (/ -1 x)
* [misc]taylor:  Taking taylor expansion of (/ 1 (- y)) in y
* [misc]taylor:  Taking taylor expansion of (- y) in y
* [misc]taylor:  Taking taylor expansion of y in y
* [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 (- x)) 2.0) (/ 1 (- y))) in y
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x)) 2.0) in y
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x)) in y
* [misc]taylor:  Taking taylor expansion of (- x) in y
* [misc]taylor:  Taking taylor expansion of x in y
* [misc]backup-simplify:  Simplify x into x
* [misc]backup-simplify:  Simplify (- x) into (- x)
* [misc]backup-simplify:  Simplify (- x) into (- x)
* [misc]backup-simplify:  Simplify (/ 1 (- x)) into (/ -1 x)
* [misc]taylor:  Taking taylor expansion of 2.0 in y
* [misc]backup-simplify:  Simplify 2.0 into 2.0
* [misc]taylor:  Taking taylor expansion of (/ 1 (- y)) in y
* [misc]taylor:  Taking taylor expansion of (- y) in y
* [misc]taylor:  Taking taylor expansion of y in y
* [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 (+ 0 1) into 1
* [misc]backup-simplify:  Simplify (* (/ -1 x) 2.0) into (/ -2.0 x)
* [misc]backup-simplify:  Simplify (* (/ -2.0 x) -1) into (/ 2.0 x)
* [misc]backup-simplify:  Simplify (/ 1 (/ 2.0 x)) into (* 0.5 x)
* [misc]taylor:  Taking taylor expansion of (/ (- (/ 1 (- x)) (/ 1 (- y))) (* (* (/ 1 (- x)) 2.0) (/ 1 (- y)))) in x
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x)) (/ 1 (- y))) in x
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x)) in x
* [misc]taylor:  Taking taylor expansion of (- x) in x
* [misc]taylor:  Taking taylor expansion of x in x
* [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 (- y)) in x
* [misc]taylor:  Taking taylor expansion of (- y) in x
* [misc]taylor:  Taking taylor expansion of y in x
* [misc]backup-simplify:  Simplify y into y
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (/ 1 (- y)) into (/ -1 y)
* [misc]taylor:  Taking taylor expansion of (* (* (/ 1 (- x)) 2.0) (/ 1 (- y))) in x
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x)) 2.0) in x
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x)) in x
* [misc]taylor:  Taking taylor expansion of (- x) in x
* [misc]taylor:  Taking taylor expansion of x in x
* [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 2.0 in x
* [misc]backup-simplify:  Simplify 2.0 into 2.0
* [misc]taylor:  Taking taylor expansion of (/ 1 (- y)) in x
* [misc]taylor:  Taking taylor expansion of (- y) in x
* [misc]taylor:  Taking taylor expansion of y in x
* [misc]backup-simplify:  Simplify y into y
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (/ 1 (- y)) into (/ -1 y)
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* -1 2.0) into -2.0
* [misc]backup-simplify:  Simplify (* -2.0 (/ -1 y)) into (/ 2.0 y)
* [misc]backup-simplify:  Simplify (/ -1 (/ 2.0 y)) into (* -0.5 y)
* [misc]taylor:  Taking taylor expansion of (/ (- (/ 1 (- x)) (/ 1 (- y))) (* (* (/ 1 (- x)) 2.0) (/ 1 (- y)))) in x
* [misc]taylor:  Taking taylor expansion of (- (/ 1 (- x)) (/ 1 (- y))) in x
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x)) in x
* [misc]taylor:  Taking taylor expansion of (- x) in x
* [misc]taylor:  Taking taylor expansion of x in x
* [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 (- y)) in x
* [misc]taylor:  Taking taylor expansion of (- y) in x
* [misc]taylor:  Taking taylor expansion of y in x
* [misc]backup-simplify:  Simplify y into y
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (/ 1 (- y)) into (/ -1 y)
* [misc]taylor:  Taking taylor expansion of (* (* (/ 1 (- x)) 2.0) (/ 1 (- y))) in x
* [misc]taylor:  Taking taylor expansion of (* (/ 1 (- x)) 2.0) in x
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x)) in x
* [misc]taylor:  Taking taylor expansion of (- x) in x
* [misc]taylor:  Taking taylor expansion of x in x
* [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 2.0 in x
* [misc]backup-simplify:  Simplify 2.0 into 2.0
* [misc]taylor:  Taking taylor expansion of (/ 1 (- y)) in x
* [misc]taylor:  Taking taylor expansion of (- y) in x
* [misc]taylor:  Taking taylor expansion of y in x
* [misc]backup-simplify:  Simplify y into y
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (/ 1 (- y)) into (/ -1 y)
* [misc]backup-simplify:  Simplify (+ -1 0) into -1
* [misc]backup-simplify:  Simplify (* -1 2.0) into -2.0
* [misc]backup-simplify:  Simplify (* -2.0 (/ -1 y)) into (/ 2.0 y)
* [misc]backup-simplify:  Simplify (/ -1 (/ 2.0 y)) into (* -0.5 y)
* [misc]taylor:  Taking taylor expansion of (* -0.5 y) in y
* [misc]taylor:  Taking taylor expansion of -0.5 in y
* [misc]backup-simplify:  Simplify -0.5 into -0.5
* [misc]taylor:  Taking taylor expansion of y in y
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* -0.5 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 (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ -1 y)) into (/ 1 y)
* [misc]backup-simplify:  Simplify (+ 0 (/ 1 y)) into (/ 1 y)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 y) (/ 0 (- y))))) 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 2.0)) into 0
* [misc]backup-simplify:  Simplify (+ (* -2.0 0) (* 0 (/ -1 y))) into 0
* [misc]backup-simplify:  Simplify (- (/ (/ 1 y) (/ 2.0 y)) (+ (* (* -0.5 y) (/ 0 (/ 2.0 y))))) into 0.5
* [misc]taylor:  Taking taylor expansion of 0.5 in y
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]backup-simplify:  Simplify (+ (* -0.5 1) (* 0 0)) into (- 0.5)
* [misc]backup-simplify:  Simplify (- 0.5) into (- 0.5)
* [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 (- y) into (- y)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 y) (/ 0 (- y))))) 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 (- y) into (- y)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 y) (/ 0 (- y))) (* 0 (/ 0 (- y))))) 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 0) (* 0 2.0))) into 0
* [misc]backup-simplify:  Simplify (+ (* -2.0 0) (+ (* 0 0) (* 0 (/ -1 y)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 (/ 2.0 y)) (+ (* (* -0.5 y) (/ 0 (/ 2.0 y))) (* 0.5 (/ 0 (/ 2.0 y))))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in y
* [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 (+ (* -0.5 0) (+ (* 0 1) (* 0 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 (- 0) into 0
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 y) (/ 0 (- y))) (* 0 (/ 0 (- y))))) 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 (- y) into (- y)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 y) (/ 0 (- y))) (* 0 (/ 0 (- y))) (* 0 (/ 0 (- y))))) 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 2.0)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -2.0 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ -1 y))))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 (/ 2.0 y)) (+ (* (* -0.5 y) (/ 0 (/ 2.0 y))) (* 0.5 (/ 0 (/ 2.0 y))) (* 0 (/ 0 (/ 2.0 y))))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in y
* [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 (+ (* (- 0.5) (* (/ 1 (- y)) 1)) (* 0.5 (* 1 (/ 1 (- x))))) into (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
* * * [misc]progress:  generating rewritten candidates
* * * * [misc]progress:  [ 1 / 1 ] rewriting at (2)
* * * [misc]progress:  simplifying candidates
* * * * [misc]progress:  [ 1 / 25 ] simplifiying candidate #<alt-event (λ (x y) (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))))>
* [enter]simplify:  Simplifying (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (18 enodes)
* * [misc]simplify:  iters left: 4 (22 enodes)
* [exit]simplify:  Simplified to (- (/ 0.5 y) (/ 0.5 x))
* * * * [misc]progress:  [ 2 / 25 ] simplifiying candidate #<alt-event (λ (x y) (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))))>
* [enter]simplify:  Simplifying (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (18 enodes)
* * [misc]simplify:  iters left: 4 (22 enodes)
* [exit]simplify:  Simplified to (- (/ 0.5 y) (/ 0.5 x))
* * * * [misc]progress:  [ 3 / 25 ] simplifiying candidate #<alt-event (λ (x y) (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))))>
* [enter]simplify:  Simplifying (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (18 enodes)
* * [misc]simplify:  iters left: 4 (22 enodes)
* [exit]simplify:  Simplified to (- (/ 0.5 y) (/ 0.5 x))
* * * * [misc]progress:  [ 4 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (pow (/ (- x y) (* (* x 2.0) y)) 1))>
* * * * [misc]progress:  [ 5 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (exp (- (log (- x y)) (log (* (* x 2.0) y)))))>
* [enter]simplify:  Simplifying (- (log (- x y)) (log (* (* x 2.0) y)))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* * [misc]simplify:  iters left: 4 (25 enodes)
* * [misc]simplify:  iters left: 3 (40 enodes)
* * [misc]simplify:  iters left: 2 (50 enodes)
* * [misc]simplify:  iters left: 1 (51 enodes)
* [exit]simplify:  Simplified to (- (log (- x y)) (log (* (* x 2.0) y)))
* [exit]simplify:  Simplified to (- (log (- x y)) (log (* (* x 2.0) y)))
* * * * [misc]progress:  [ 6 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (exp (log (/ (- x y) (* (* x 2.0) y)))))>
* [enter]simplify:  Simplifying (log (/ (- x y) (* (* x 2.0) y)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (17 enodes)
* * [misc]simplify:  iters left: 4 (38 enodes)
* * [misc]simplify:  iters left: 3 (65 enodes)
* * [misc]simplify:  iters left: 2 (90 enodes)
* * [misc]simplify:  iters left: 1 (130 enodes)
* [exit]simplify:  Simplified to (log (/ (/ (- x y) (* 2.0 x)) y))
* [exit]simplify:  Simplified to (log (/ (/ (- x y) (* 2.0 x)) y))
* * * * [misc]progress:  [ 7 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (log (exp (/ (- x y) (* (* x 2.0) y)))))>
* [enter]simplify:  Simplifying (exp (/ (- x y) (* (* x 2.0) y)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* * [misc]simplify:  iters left: 4 (32 enodes)
* * [misc]simplify:  iters left: 3 (48 enodes)
* * [misc]simplify:  iters left: 2 (58 enodes)
* * [misc]simplify:  iters left: 1 (85 enodes)
* [exit]simplify:  Simplified to (exp (/ (/ (- x y) y) (* 2.0 x)))
* [exit]simplify:  Simplified to (exp (/ (/ (- x y) y) (* 2.0 x)))
* * * * [misc]progress:  [ 8 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (cbrt (/ (* (* (- x y) (- x y)) (- x y)) (* (* (* (* x 2.0) y) (* (* x 2.0) y)) (* (* x 2.0) y)))))>
* [enter]simplify:  Simplifying (/ (* (* (- x y) (- x y)) (- x y)) (* (* (* (* x 2.0) y) (* (* x 2.0) y)) (* (* x 2.0) y)))
* * [misc]simplify:  iters left: 6 (11 enodes)
* * [misc]simplify:  iters left: 5 (22 enodes)
* * [misc]simplify:  iters left: 4 (60 enodes)
* * [misc]simplify:  iters left: 3 (162 enodes)
* [exit]simplify:  Simplified to (pow (/ (/ (- x y) (* 2.0 x)) y) 3)
* [exit]simplify:  Simplified to (pow (/ (/ (- x y) (* 2.0 x)) y) 3)
* * * * [misc]progress:  [ 9 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (* (* (cbrt (/ (- x y) (* (* x 2.0) y))) (cbrt (/ (- x y) (* (* x 2.0) y)))) (cbrt (/ (- x y) (* (* x 2.0) y)))))>
* [enter]simplify:  Simplifying (* (cbrt (/ (- x y) (* (* x 2.0) y))) (cbrt (/ (- x y) (* (* x 2.0) y))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* * [misc]simplify:  iters left: 4 (30 enodes)
* * [misc]simplify:  iters left: 3 (46 enodes)
* * [misc]simplify:  iters left: 2 (54 enodes)
* * [misc]simplify:  iters left: 1 (89 enodes)
* [exit]simplify:  Simplified to (* (cbrt (/ (/ (- x y) x) (* 2.0 y))) (cbrt (/ (/ (- x y) x) (* 2.0 y))))
* [exit]simplify:  Simplified to (* (cbrt (/ (/ (- x y) x) (* 2.0 y))) (cbrt (/ (/ (- x y) x) (* 2.0 y))))
* [enter]simplify:  Simplifying (cbrt (/ (- x y) (* (* x 2.0) y)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* * [misc]simplify:  iters left: 4 (29 enodes)
* * [misc]simplify:  iters left: 3 (45 enodes)
* * [misc]simplify:  iters left: 2 (53 enodes)
* * [misc]simplify:  iters left: 1 (88 enodes)
* [exit]simplify:  Simplified to (cbrt (/ (/ (- x y) (* y x)) 2.0))
* [exit]simplify:  Simplified to (cbrt (/ (/ (- x y) (* y x)) 2.0))
* * * * [misc]progress:  [ 10 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (cbrt (* (* (/ (- x y) (* (* x 2.0) y)) (/ (- x y) (* (* x 2.0) y))) (/ (- x y) (* (* x 2.0) y)))))>
* [enter]simplify:  Simplifying (* (* (/ (- x y) (* (* x 2.0) y)) (/ (- x y) (* (* x 2.0) y))) (/ (- x y) (* (* x 2.0) y)))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (20 enodes)
* * [misc]simplify:  iters left: 4 (59 enodes)
* * [misc]simplify:  iters left: 3 (172 enodes)
* [exit]simplify:  Simplified to (pow (/ (/ (- x y) x) (* 2.0 y)) 3)
* [exit]simplify:  Simplified to (pow (/ (/ (- x y) x) (* 2.0 y)) 3)
* * * * [misc]progress:  [ 11 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (* (sqrt (/ (- x y) (* (* x 2.0) y))) (sqrt (/ (- x y) (* (* x 2.0) y)))))>
* [enter]simplify:  Simplifying (sqrt (/ (- x y) (* (* x 2.0) y)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* * [misc]simplify:  iters left: 4 (29 enodes)
* * [misc]simplify:  iters left: 3 (45 enodes)
* * [misc]simplify:  iters left: 2 (53 enodes)
* * [misc]simplify:  iters left: 1 (88 enodes)
* [exit]simplify:  Simplified to (sqrt (/ (/ (- x y) (* y x)) 2.0))
* [exit]simplify:  Simplified to (sqrt (/ (/ (- x y) (* y x)) 2.0))
* [enter]simplify:  Simplifying (sqrt (/ (- x y) (* (* x 2.0) y)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* * [misc]simplify:  iters left: 4 (29 enodes)
* * [misc]simplify:  iters left: 3 (45 enodes)
* * [misc]simplify:  iters left: 2 (53 enodes)
* * [misc]simplify:  iters left: 1 (88 enodes)
* [exit]simplify:  Simplified to (sqrt (/ (/ (- x y) (* y x)) 2.0))
* [exit]simplify:  Simplified to (sqrt (/ (/ (- x y) (* y x)) 2.0))
* * * * [misc]progress:  [ 12 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (/ (- (- x y)) (- (* (* x 2.0) y))))>
* [enter]simplify:  Simplifying (- (- x y))
* * [misc]simplify:  iters left: 4 (4 enodes)
* [exit]simplify:  Simplified to (- (- x y))
* [exit]simplify:  Simplified to (- (- x y))
* [enter]simplify:  Simplifying (- (* (* x 2.0) y))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (23 enodes)
* * [misc]simplify:  iters left: 3 (31 enodes)
* * [misc]simplify:  iters left: 2 (43 enodes)
* * [misc]simplify:  iters left: 1 (47 enodes)
* [exit]simplify:  Simplified to (* (- y) (* 2.0 x))
* [exit]simplify:  Simplified to (* (- y) (* 2.0 x))
* * * * [misc]progress:  [ 13 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (- (/ x (* (* x 2.0) y)) (/ y (* (* x 2.0) y))))>
* [enter]simplify:  Simplifying (/ x (* (* x 2.0) y))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (9 enodes)
* * [misc]simplify:  iters left: 4 (16 enodes)
* * [misc]simplify:  iters left: 3 (24 enodes)
* * [misc]simplify:  iters left: 2 (29 enodes)
* * [misc]simplify:  iters left: 1 (39 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 y) 2.0)
* [exit]simplify:  Simplified to (/ (/ 1 y) 2.0)
* [enter]simplify:  Simplifying (/ y (* (* x 2.0) y))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (9 enodes)
* * [misc]simplify:  iters left: 4 (16 enodes)
* * [misc]simplify:  iters left: 3 (23 enodes)
* * [misc]simplify:  iters left: 2 (26 enodes)
* * [misc]simplify:  iters left: 1 (36 enodes)
* [exit]simplify:  Simplified to (/ 1 (* 2.0 x))
* [exit]simplify:  Simplified to (/ 1 (* 2.0 x))
* * * * [misc]progress:  [ 14 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (* (/ (* (cbrt (- x y)) (cbrt (- x y))) (* x 2.0)) (/ (cbrt (- x y)) y)))>
* [enter]simplify:  Simplifying (/ (* (cbrt (- x y)) (cbrt (- x y))) (* x 2.0))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (16 enodes)
* * [misc]simplify:  iters left: 4 (23 enodes)
* * [misc]simplify:  iters left: 3 (37 enodes)
* * [misc]simplify:  iters left: 2 (44 enodes)
* * [misc]simplify:  iters left: 1 (46 enodes)
* [exit]simplify:  Simplified to (/ (/ (cbrt (- x y)) 2.0) (/ x (cbrt (- x y))))
* [exit]simplify:  Simplified to (/ (/ (cbrt (- x y)) 2.0) (/ x (cbrt (- x y))))
* [enter]simplify:  Simplifying (/ (cbrt (- x y)) y)
* * [misc]simplify:  iters left: 5 (5 enodes)
* [exit]simplify:  Simplified to (/ (cbrt (- x y)) y)
* [exit]simplify:  Simplified to (/ (cbrt (- x y)) y)
* * * * [misc]progress:  [ 15 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (* (/ (sqrt (- x y)) (* x 2.0)) (/ (sqrt (- x y)) y)))>
* [enter]simplify:  Simplifying (/ (sqrt (- x y)) (* x 2.0))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* [exit]simplify:  Simplified to (/ (sqrt (- x y)) (* x 2.0))
* [exit]simplify:  Simplified to (/ (sqrt (- x y)) (* x 2.0))
* [enter]simplify:  Simplifying (/ (sqrt (- x y)) y)
* * [misc]simplify:  iters left: 5 (5 enodes)
* [exit]simplify:  Simplified to (/ (sqrt (- x y)) y)
* [exit]simplify:  Simplified to (/ (sqrt (- x y)) y)
* * * * [misc]progress:  [ 16 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (* (/ 1 (* x 2.0)) (/ (- x y) y)))>
* [enter]simplify:  Simplifying (/ 1 (* x 2.0))
* * [misc]simplify:  iters left: 4 (5 enodes)
* * [misc]simplify:  iters left: 3 (10 enodes)
* [exit]simplify:  Simplified to (/ 1 (* 2.0 x))
* [exit]simplify:  Simplified to (/ 1 (* 2.0 x))
* [enter]simplify:  Simplifying (/ (- x y) y)
* * [misc]simplify:  iters left: 4 (4 enodes)
* * [misc]simplify:  iters left: 3 (7 enodes)
* * [misc]simplify:  iters left: 2 (8 enodes)
* * [misc]simplify:  iters left: 1 (10 enodes)
* [exit]simplify:  Simplified to (/ (- x y) y)
* [exit]simplify:  Simplified to (/ (- x y) y)
* * * * [misc]progress:  [ 17 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (* 1 (/ (- x y) (* (* x 2.0) y))))>
* * * * [misc]progress:  [ 18 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (* (- x y) (/ 1 (* (* x 2.0) y))))>
* [enter]simplify:  Simplifying (/ 1 (* (* x 2.0) y))
* * [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 (26 enodes)
* * [misc]simplify:  iters left: 2 (29 enodes)
* * [misc]simplify:  iters left: 1 (39 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 y) (* 2.0 x))
* [exit]simplify:  Simplified to (/ (/ 1 y) (* 2.0 x))
* * * * [misc]progress:  [ 19 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (/ 1 (/ (* (* x 2.0) y) (- x y))))>
* [enter]simplify:  Simplifying (/ (* (* x 2.0) y) (- x y))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* * [misc]simplify:  iters left: 4 (17 enodes)
* * [misc]simplify:  iters left: 3 (30 enodes)
* * [misc]simplify:  iters left: 2 (48 enodes)
* * [misc]simplify:  iters left: 1 (59 enodes)
* [exit]simplify:  Simplified to (* (/ (* 2.0 x) (- x y)) y)
* [exit]simplify:  Simplified to (* (/ (* 2.0 x) (- x y)) y)
* * * * [misc]progress:  [ 20 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (/ (/ (- x y) (* x 2.0)) y))>
* [enter]simplify:  Simplifying (/ (- x y) (* x 2.0))
* * [misc]simplify:  iters left: 4 (6 enodes)
* * [misc]simplify:  iters left: 3 (12 enodes)
* * [misc]simplify:  iters left: 2 (21 enodes)
* * [misc]simplify:  iters left: 1 (22 enodes)
* [exit]simplify:  Simplified to (/ (- x y) (* 2.0 x))
* [exit]simplify:  Simplified to (/ (- x y) (* 2.0 x))
* * * * [misc]progress:  [ 21 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (/ (* (cbrt (- x y)) (cbrt (- x y))) (/ (* (* x 2.0) y) (cbrt (- x y)))))>
* [enter]simplify:  Simplifying (/ (* (* x 2.0) y) (cbrt (- x y)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* * [misc]simplify:  iters left: 4 (18 enodes)
* * [misc]simplify:  iters left: 3 (25 enodes)
* * [misc]simplify:  iters left: 2 (35 enodes)
* * [misc]simplify:  iters left: 1 (42 enodes)
* [exit]simplify:  Simplified to (/ (* x (* y 2.0)) (cbrt (- x y)))
* [exit]simplify:  Simplified to (/ (* x (* y 2.0)) (cbrt (- x y)))
* * * * [misc]progress:  [ 22 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (/ (sqrt (- x y)) (/ (* (* x 2.0) y) (sqrt (- x y)))))>
* [enter]simplify:  Simplifying (/ (* (* x 2.0) y) (sqrt (- x y)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* * [misc]simplify:  iters left: 4 (18 enodes)
* * [misc]simplify:  iters left: 3 (25 enodes)
* * [misc]simplify:  iters left: 2 (35 enodes)
* * [misc]simplify:  iters left: 1 (42 enodes)
* [exit]simplify:  Simplified to (/ (* x (* y 2.0)) (sqrt (- x y)))
* [exit]simplify:  Simplified to (/ (* x (* y 2.0)) (sqrt (- x y)))
* * * * [misc]progress:  [ 23 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (/ 1 (/ (* (* x 2.0) y) (- x y))))>
* [enter]simplify:  Simplifying (/ (* (* x 2.0) y) (- x y))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* * [misc]simplify:  iters left: 4 (17 enodes)
* * [misc]simplify:  iters left: 3 (30 enodes)
* * [misc]simplify:  iters left: 2 (48 enodes)
* * [misc]simplify:  iters left: 1 (59 enodes)
* [exit]simplify:  Simplified to (* (/ (* 2.0 x) (- x y)) y)
* [exit]simplify:  Simplified to (* (/ (* 2.0 x) (- x y)) y)
* * * * [misc]progress:  [ 24 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (/ (- (pow x 3) (pow y 3)) (* (* (* x 2.0) y) (+ (* x x) (+ (* y y) (* x y))))))>
* [enter]simplify:  Simplifying (* (* (* x 2.0) y) (+ (* x x) (+ (* y y) (* x y))))
* * [misc]simplify:  iters left: 6 (11 enodes)
* * [misc]simplify:  iters left: 5 (27 enodes)
* * [misc]simplify:  iters left: 4 (66 enodes)
* * [misc]simplify:  iters left: 3 (137 enodes)
* * [misc]simplify:  iters left: 2 (294 enodes)
* * [misc]simplify:  iters left: 1 (440 enodes)
* [exit]simplify:  Simplified to (* (+ (* x x) (* y (+ x y))) (* (* 2.0 x) y))
* [exit]simplify:  Simplified to (* (+ (* x x) (* y (+ x y))) (* (* 2.0 x) y))
* * * * [misc]progress:  [ 25 / 25 ] simplifiying candidate #<alt-delta (λ (x y) (/ (- (* x x) (* y y)) (* (* (* x 2.0) y) (+ x y))))>
* [enter]simplify:  Simplifying (* (* (* x 2.0) y) (+ x y))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (18 enodes)
* * [misc]simplify:  iters left: 4 (40 enodes)
* * [misc]simplify:  iters left: 3 (78 enodes)
* * [misc]simplify:  iters left: 2 (97 enodes)
* * [misc]simplify:  iters left: 1 (112 enodes)
* [exit]simplify:  Simplified to (* (* (+ x y) 2.0) (* y x))
* [exit]simplify:  Simplified to (* (* (+ x y) 2.0) (* y x))
* * * [misc]progress:  adding candidates to table
* * [misc]progress:  iteration 2 / 3
* * * [misc]progress:  picking best candidate
* * * * [misc]pick:  Picked  #<alt-delta (λ (x y) (- (/ 0.5 y) (/ 0.5 x)))>
* * * [misc]progress:  localizing error
* * * [misc]progress:  generating series expansions
* * * * [misc]progress:  [ 1 / 1 ] generating series at (2)
* [misc]approximate:  Taking taylor expansion of (- (/ 0.5 y) (/ 0.5 x)) in (y x) around 0
* [misc]taylor:  Taking taylor expansion of (- (/ 0.5 y) (/ 0.5 x)) in x
* [misc]taylor:  Taking taylor expansion of (/ 0.5 y) in x
* [misc]taylor:  Taking taylor expansion of 0.5 in x
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of y in x
* [misc]backup-simplify:  Simplify y into y
* [misc]backup-simplify:  Simplify (/ 0.5 y) into (/ 0.5 y)
* [misc]taylor:  Taking taylor expansion of (/ 0.5 x) in x
* [misc]taylor:  Taking taylor expansion of 0.5 in x
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of x in x
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 0.5 1) into 0.5
* [misc]taylor:  Taking taylor expansion of (- (/ 0.5 y) (/ 0.5 x)) in y
* [misc]taylor:  Taking taylor expansion of (/ 0.5 y) in y
* [misc]taylor:  Taking taylor expansion of 0.5 in y
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of y in y
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 0.5 1) into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 0.5 x) in y
* [misc]taylor:  Taking taylor expansion of 0.5 in y
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of x in y
* [misc]backup-simplify:  Simplify x into x
* [misc]backup-simplify:  Simplify (/ 0.5 x) into (/ 0.5 x)
* [misc]taylor:  Taking taylor expansion of (- (/ 0.5 y) (/ 0.5 x)) in y
* [misc]taylor:  Taking taylor expansion of (/ 0.5 y) in y
* [misc]taylor:  Taking taylor expansion of 0.5 in y
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of y in y
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 0.5 1) into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 0.5 x) in y
* [misc]taylor:  Taking taylor expansion of 0.5 in y
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of x in y
* [misc]backup-simplify:  Simplify x into x
* [misc]backup-simplify:  Simplify (/ 0.5 x) into (/ 0.5 x)
* [misc]backup-simplify:  Simplify (+ 0.5 0) into 0.5
* [misc]taylor:  Taking taylor expansion of 0.5 in x
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* 0.5 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0.5 x)) into (- (* 0.5 (/ 1 x)))
* [misc]backup-simplify:  Simplify (+ 0 (- (* 0.5 (/ 1 x)))) into (- (* 0.5 (/ 1 x)))
* [misc]taylor:  Taking taylor expansion of (- (* 0.5 (/ 1 x))) in x
* [misc]taylor:  Taking taylor expansion of (* 0.5 (/ 1 x)) in x
* [misc]taylor:  Taking taylor expansion of 0.5 in x
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 1 x) in x
* [misc]taylor:  Taking taylor expansion of x in x
* [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 (* 0.5 1) into 0.5
* [misc]backup-simplify:  Simplify (- 0.5) into (- 0.5)
* [misc]backup-simplify:  Simplify (- 0.5) into (- 0.5)
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* 0.5 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 x) (+ (* (/ 0.5 x) (/ 0 x)))) 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 x
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* 0.5 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 1) (+ (* 0.5 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 x) (+ (* (/ 0.5 x) (/ 0 x)) (* 0 (/ 0 x)))) 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 x
* [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 (+ (* 0.5 0) (+ (* 0 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 1) (+ (* 0.5 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 x) (+ (* (/ 0.5 x) (/ 0 x)) (* 0 (/ 0 x)) (* 0 (/ 0 x)))) 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 x
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (* 0.5 (* 1 (/ 1 y))) (* (- 0.5) (* (/ 1 x) 1))) into (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
* [misc]approximate:  Taking taylor expansion of (- (/ 0.5 (/ 1 y)) (/ 0.5 (/ 1 x))) in (y x) around 0
* [misc]taylor:  Taking taylor expansion of (- (/ 0.5 (/ 1 y)) (/ 0.5 (/ 1 x))) in x
* [misc]taylor:  Taking taylor expansion of (/ 0.5 (/ 1 y)) in x
* [misc]taylor:  Taking taylor expansion of 0.5 in x
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 1 y) in x
* [misc]taylor:  Taking taylor expansion of y in x
* [misc]backup-simplify:  Simplify y into y
* [misc]backup-simplify:  Simplify (/ 1 y) into (/ 1 y)
* [misc]backup-simplify:  Simplify (/ 0.5 (/ 1 y)) into (* 0.5 y)
* [misc]taylor:  Taking taylor expansion of (/ 0.5 (/ 1 x)) in x
* [misc]taylor:  Taking taylor expansion of 0.5 in x
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 1 x) in x
* [misc]taylor:  Taking taylor expansion of x in x
* [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 (/ 0.5 1) into 0.5
* [misc]taylor:  Taking taylor expansion of (- (/ 0.5 (/ 1 y)) (/ 0.5 (/ 1 x))) in y
* [misc]taylor:  Taking taylor expansion of (/ 0.5 (/ 1 y)) in y
* [misc]taylor:  Taking taylor expansion of 0.5 in y
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 1 y) in y
* [misc]taylor:  Taking taylor expansion of y in y
* [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 (/ 0.5 1) into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 0.5 (/ 1 x)) in y
* [misc]taylor:  Taking taylor expansion of 0.5 in y
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 1 x) in y
* [misc]taylor:  Taking taylor expansion of x in y
* [misc]backup-simplify:  Simplify x into x
* [misc]backup-simplify:  Simplify (/ 1 x) into (/ 1 x)
* [misc]backup-simplify:  Simplify (/ 0.5 (/ 1 x)) into (* 0.5 x)
* [misc]taylor:  Taking taylor expansion of (- (/ 0.5 (/ 1 y)) (/ 0.5 (/ 1 x))) in y
* [misc]taylor:  Taking taylor expansion of (/ 0.5 (/ 1 y)) in y
* [misc]taylor:  Taking taylor expansion of 0.5 in y
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 1 y) in y
* [misc]taylor:  Taking taylor expansion of y in y
* [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 (/ 0.5 1) into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 0.5 (/ 1 x)) in y
* [misc]taylor:  Taking taylor expansion of 0.5 in y
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 1 x) in y
* [misc]taylor:  Taking taylor expansion of x in y
* [misc]backup-simplify:  Simplify x into x
* [misc]backup-simplify:  Simplify (/ 1 x) into (/ 1 x)
* [misc]backup-simplify:  Simplify (/ 0.5 (/ 1 x)) into (* 0.5 x)
* [misc]backup-simplify:  Simplify (- (* 0.5 x)) into (- (* 0.5 x))
* [misc]backup-simplify:  Simplify (+ 0 (- (* 0.5 x))) into (- (* 0.5 x))
* [misc]taylor:  Taking taylor expansion of (- (* 0.5 x)) in x
* [misc]taylor:  Taking taylor expansion of (* 0.5 x) in x
* [misc]taylor:  Taking taylor expansion of 0.5 in x
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of x in x
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0.5 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x) (/ 0 x)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 (/ 1 x)) (+ (* (* 0.5 x) (/ 0 (/ 1 x))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0.5 0) into 0.5
* [misc]taylor:  Taking taylor expansion of 0.5 in x
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]backup-simplify:  Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
* [misc]backup-simplify:  Simplify (- 0.5) into (- 0.5)
* [misc]backup-simplify:  Simplify (- 0.5) into (- 0.5)
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* 0.5 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x) (/ 0 x)) (* 0 (/ 0 x)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 (/ 1 x)) (+ (* (* 0.5 x) (/ 0 (/ 1 x))) (* 0 (/ 0 (/ 1 x))))) 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 x
* [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 (+ (* 0.5 0) (+ (* 0 1) (* 0 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)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* 0.5 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 x) (/ 0 x)) (* 0 (/ 0 x)) (* 0 (/ 0 x)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 (/ 1 x)) (+ (* (* 0.5 x) (/ 0 (/ 1 x))) (* 0 (/ 0 (/ 1 x))) (* 0 (/ 0 (/ 1 x))))) 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 x
* [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 (+ (* (- 0.5) (* (/ 1 x) 1)) (* 0.5 (* 1 (/ 1 y)))) into (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
* [misc]approximate:  Taking taylor expansion of (- (/ 0.5 (/ 1 (- y))) (/ 0.5 (/ 1 (- x)))) in (y x) around 0
* [misc]taylor:  Taking taylor expansion of (- (/ 0.5 (/ 1 (- y))) (/ 0.5 (/ 1 (- x)))) in x
* [misc]taylor:  Taking taylor expansion of (/ 0.5 (/ 1 (- y))) in x
* [misc]taylor:  Taking taylor expansion of 0.5 in x
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 1 (- y)) in x
* [misc]taylor:  Taking taylor expansion of (- y) in x
* [misc]taylor:  Taking taylor expansion of y in x
* [misc]backup-simplify:  Simplify y into y
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (- y) into (- y)
* [misc]backup-simplify:  Simplify (/ 1 (- y)) into (/ -1 y)
* [misc]backup-simplify:  Simplify (/ 0.5 (/ -1 y)) into (* -0.5 y)
* [misc]taylor:  Taking taylor expansion of (/ 0.5 (/ 1 (- x))) in x
* [misc]taylor:  Taking taylor expansion of 0.5 in x
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x)) in x
* [misc]taylor:  Taking taylor expansion of (- x) in x
* [misc]taylor:  Taking taylor expansion of x in x
* [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 (/ 0.5 -1) into -0.5
* [misc]taylor:  Taking taylor expansion of (- (/ 0.5 (/ 1 (- y))) (/ 0.5 (/ 1 (- x)))) in y
* [misc]taylor:  Taking taylor expansion of (/ 0.5 (/ 1 (- y))) in y
* [misc]taylor:  Taking taylor expansion of 0.5 in y
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 1 (- y)) in y
* [misc]taylor:  Taking taylor expansion of (- y) in y
* [misc]taylor:  Taking taylor expansion of y in y
* [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 (/ 0.5 -1) into -0.5
* [misc]taylor:  Taking taylor expansion of (/ 0.5 (/ 1 (- x))) in y
* [misc]taylor:  Taking taylor expansion of 0.5 in y
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x)) in y
* [misc]taylor:  Taking taylor expansion of (- x) in y
* [misc]taylor:  Taking taylor expansion of x in y
* [misc]backup-simplify:  Simplify x into x
* [misc]backup-simplify:  Simplify (- x) into (- x)
* [misc]backup-simplify:  Simplify (- x) into (- x)
* [misc]backup-simplify:  Simplify (/ 1 (- x)) into (/ -1 x)
* [misc]backup-simplify:  Simplify (/ 0.5 (/ -1 x)) into (* -0.5 x)
* [misc]taylor:  Taking taylor expansion of (- (/ 0.5 (/ 1 (- y))) (/ 0.5 (/ 1 (- x)))) in y
* [misc]taylor:  Taking taylor expansion of (/ 0.5 (/ 1 (- y))) in y
* [misc]taylor:  Taking taylor expansion of 0.5 in y
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 1 (- y)) in y
* [misc]taylor:  Taking taylor expansion of (- y) in y
* [misc]taylor:  Taking taylor expansion of y in y
* [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 (/ 0.5 -1) into -0.5
* [misc]taylor:  Taking taylor expansion of (/ 0.5 (/ 1 (- x))) in y
* [misc]taylor:  Taking taylor expansion of 0.5 in y
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of (/ 1 (- x)) in y
* [misc]taylor:  Taking taylor expansion of (- x) in y
* [misc]taylor:  Taking taylor expansion of x in y
* [misc]backup-simplify:  Simplify x into x
* [misc]backup-simplify:  Simplify (- x) into (- x)
* [misc]backup-simplify:  Simplify (- x) into (- x)
* [misc]backup-simplify:  Simplify (/ 1 (- x)) into (/ -1 x)
* [misc]backup-simplify:  Simplify (/ 0.5 (/ -1 x)) into (* -0.5 x)
* [misc]backup-simplify:  Simplify (- (* -0.5 x)) into (* 0.5 x)
* [misc]backup-simplify:  Simplify (+ 0 (* 0.5 x)) into (* 0.5 x)
* [misc]taylor:  Taking taylor expansion of (* 0.5 x) in x
* [misc]taylor:  Taking taylor expansion of 0.5 in x
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]taylor:  Taking taylor expansion of x in x
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (* 0.5 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x) into (- x)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x) (/ 0 (- x))))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 (/ -1 x)) (+ (* (* -0.5 x) (/ 0 (/ -1 x))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ -0.5 0) into (- 0.5)
* [misc]taylor:  Taking taylor expansion of (- 0.5) in x
* [misc]taylor:  Taking taylor expansion of 0.5 in x
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [misc]backup-simplify:  Simplify (- 0.5) into (- 0.5)
* [misc]backup-simplify:  Simplify (- 0.5) into (- 0.5)
* [misc]backup-simplify:  Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
* [misc]backup-simplify:  Simplify 0.5 into 0.5
* [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) (+ (* -0.5 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x) into (- x)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x) into (- x)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x) (/ 0 (- x))) (* 0 (/ 0 (- x))))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 (/ -1 x)) (+ (* (* -0.5 x) (/ 0 (/ -1 x))) (* 0 (/ 0 (/ -1 x))))) 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 x
* [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 (+ (* 0.5 0) (+ (* 0 1) (* 0 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 (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 -1) (+ (* -0.5 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x) into (- x)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x) into (- x)
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- x) into (- x)
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 x) (/ 0 (- x))) (* 0 (/ 0 (- x))) (* 0 (/ 0 (- x))))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 (/ -1 x)) (+ (* (* -0.5 x) (/ 0 (/ -1 x))) (* 0 (/ 0 (/ -1 x))) (* 0 (/ 0 (/ -1 x))))) 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 x
* [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 (+ (* 0.5 (* (/ 1 (- x)) 1)) (* (- 0.5) (* 1 (/ 1 (- y))))) into (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
* * * [misc]progress:  generating rewritten candidates
* * * * [misc]progress:  [ 1 / 1 ] rewriting at (2)
* * * [misc]progress:  simplifying candidates
* * * * [misc]progress:  [ 1 / 18 ] simplifiying candidate #<alt-event (λ (x y) (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))))>
* [enter]simplify:  Simplifying (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (18 enodes)
* * [misc]simplify:  iters left: 4 (22 enodes)
* [exit]simplify:  Simplified to (- (/ 0.5 y) (/ 0.5 x))
* * * * [misc]progress:  [ 2 / 18 ] simplifiying candidate #<alt-event (λ (x y) (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))))>
* [enter]simplify:  Simplifying (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (18 enodes)
* * [misc]simplify:  iters left: 4 (22 enodes)
* [exit]simplify:  Simplified to (- (/ 0.5 y) (/ 0.5 x))
* * * * [misc]progress:  [ 3 / 18 ] simplifiying candidate #<alt-event (λ (x y) (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))))>
* [enter]simplify:  Simplifying (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (18 enodes)
* * [misc]simplify:  iters left: 4 (22 enodes)
* [exit]simplify:  Simplified to (- (/ 0.5 y) (/ 0.5 x))
* * * * [misc]progress:  [ 4 / 18 ] simplifiying candidate #<alt-delta (λ (x y) (log (/ (exp (/ 0.5 y)) (exp (/ 0.5 x)))))>
* [enter]simplify:  Simplifying (/ (exp (/ 0.5 y)) (exp (/ 0.5 x)))
* * [misc]simplify:  iters left: 5 (8 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* [exit]simplify:  Simplified to (exp (- (/ 0.5 y) (/ 0.5 x)))
* [exit]simplify:  Simplified to (exp (- (/ 0.5 y) (/ 0.5 x)))
* * * * [misc]progress:  [ 5 / 18 ] simplifiying candidate #<alt-delta (λ (x y) (pow (- (/ 0.5 y) (/ 0.5 x)) 1))>
* * * * [misc]progress:  [ 6 / 18 ] simplifiying candidate #<alt-delta (λ (x y) (exp (log (- (/ 0.5 y) (/ 0.5 x)))))>
* [enter]simplify:  Simplifying (log (- (/ 0.5 y) (/ 0.5 x)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* [exit]simplify:  Simplified to (log (- (/ 0.5 y) (/ 0.5 x)))
* [exit]simplify:  Simplified to (log (- (/ 0.5 y) (/ 0.5 x)))
* * * * [misc]progress:  [ 7 / 18 ] simplifiying candidate #<alt-delta (λ (x y) (log (exp (- (/ 0.5 y) (/ 0.5 x)))))>
* [enter]simplify:  Simplifying (exp (- (/ 0.5 y) (/ 0.5 x)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* [exit]simplify:  Simplified to (exp (- (/ 0.5 y) (/ 0.5 x)))
* [exit]simplify:  Simplified to (exp (- (/ 0.5 y) (/ 0.5 x)))
* * * * [misc]progress:  [ 8 / 18 ] simplifiying candidate #<alt-delta (λ (x y) (* (* (cbrt (- (/ 0.5 y) (/ 0.5 x))) (cbrt (- (/ 0.5 y) (/ 0.5 x)))) (cbrt (- (/ 0.5 y) (/ 0.5 x)))))>
* [enter]simplify:  Simplifying (* (cbrt (- (/ 0.5 y) (/ 0.5 x))) (cbrt (- (/ 0.5 y) (/ 0.5 x))))
* * [misc]simplify:  iters left: 6 (8 enodes)
* [exit]simplify:  Simplified to (* (cbrt (- (/ 0.5 y) (/ 0.5 x))) (cbrt (- (/ 0.5 y) (/ 0.5 x))))
* [exit]simplify:  Simplified to (* (cbrt (- (/ 0.5 y) (/ 0.5 x))) (cbrt (- (/ 0.5 y) (/ 0.5 x))))
* [enter]simplify:  Simplifying (cbrt (- (/ 0.5 y) (/ 0.5 x)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* [exit]simplify:  Simplified to (cbrt (- (/ 0.5 y) (/ 0.5 x)))
* [exit]simplify:  Simplified to (cbrt (- (/ 0.5 y) (/ 0.5 x)))
* * * * [misc]progress:  [ 9 / 18 ] simplifiying candidate #<alt-delta (λ (x y) (cbrt (* (* (- (/ 0.5 y) (/ 0.5 x)) (- (/ 0.5 y) (/ 0.5 x))) (- (/ 0.5 y) (/ 0.5 x)))))>
* [enter]simplify:  Simplifying (* (* (- (/ 0.5 y) (/ 0.5 x)) (- (/ 0.5 y) (/ 0.5 x))) (- (/ 0.5 y) (/ 0.5 x)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (9 enodes)
* * [misc]simplify:  iters left: 4 (11 enodes)
* [exit]simplify:  Simplified to (pow (- (/ 0.5 y) (/ 0.5 x)) 3)
* [exit]simplify:  Simplified to (pow (- (/ 0.5 y) (/ 0.5 x)) 3)
* * * * [misc]progress:  [ 10 / 18 ] simplifiying candidate #<alt-delta (λ (x y) (* (sqrt (- (/ 0.5 y) (/ 0.5 x))) (sqrt (- (/ 0.5 y) (/ 0.5 x)))))>
* [enter]simplify:  Simplifying (sqrt (- (/ 0.5 y) (/ 0.5 x)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* [exit]simplify:  Simplified to (sqrt (- (/ 0.5 y) (/ 0.5 x)))
* [exit]simplify:  Simplified to (sqrt (- (/ 0.5 y) (/ 0.5 x)))
* [enter]simplify:  Simplifying (sqrt (- (/ 0.5 y) (/ 0.5 x)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* [exit]simplify:  Simplified to (sqrt (- (/ 0.5 y) (/ 0.5 x)))
* [exit]simplify:  Simplified to (sqrt (- (/ 0.5 y) (/ 0.5 x)))
* * * * [misc]progress:  [ 11 / 18 ] simplifiying candidate #<alt-delta (λ (x y) (/ (- (* 0.5 x) (* y 0.5)) (* y x)))>
* [enter]simplify:  Simplifying (- (* 0.5 x) (* y 0.5))
* * [misc]simplify:  iters left: 4 (6 enodes)
* * [misc]simplify:  iters left: 3 (8 enodes)
* * [misc]simplify:  iters left: 2 (10 enodes)
* * [misc]simplify:  iters left: 1 (11 enodes)
* [exit]simplify:  Simplified to (* 0.5 (- x y))
* [exit]simplify:  Simplified to (* 0.5 (- x y))
* [enter]simplify:  Simplifying (* y x)
* * [misc]simplify:  iters left: 2 (3 enodes)
* * [misc]simplify:  iters left: 1 (4 enodes)
* [exit]simplify:  Simplified to (* x y)
* [exit]simplify:  Simplified to (* x y)
* * * * [misc]progress:  [ 12 / 18 ] simplifiying candidate #<alt-delta (λ (x y) (/ (- (pow (/ 0.5 y) 3) (pow (/ 0.5 x) 3)) (+ (* (/ 0.5 y) (/ 0.5 y)) (+ (* (/ 0.5 x) (/ 0.5 x)) (* (/ 0.5 y) (/ 0.5 x))))))>
* [enter]simplify:  Simplifying (- (pow (/ 0.5 y) 3) (pow (/ 0.5 x) 3))
* * [misc]simplify:  iters left: 5 (9 enodes)
* * [misc]simplify:  iters left: 4 (20 enodes)
* * [misc]simplify:  iters left: 3 (39 enodes)
* * [misc]simplify:  iters left: 2 (66 enodes)
* * [misc]simplify:  iters left: 1 (106 enodes)
* [exit]simplify:  Simplified to (- (pow (/ 0.5 y) 3) (pow (/ 0.5 x) 3))
* [exit]simplify:  Simplified to (- (pow (/ 0.5 y) 3) (pow (/ 0.5 x) 3))
* [enter]simplify:  Simplifying (+ (* (/ 0.5 y) (/ 0.5 y)) (+ (* (/ 0.5 x) (/ 0.5 x)) (* (/ 0.5 y) (/ 0.5 x))))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (26 enodes)
* * [misc]simplify:  iters left: 4 (40 enodes)
* * [misc]simplify:  iters left: 3 (63 enodes)
* * [misc]simplify:  iters left: 2 (97 enodes)
* * [misc]simplify:  iters left: 1 (128 enodes)
* [exit]simplify:  Simplified to (+ (* (/ 0.5 x) (/ 0.5 x)) (* (/ 0.5 y) (+ (/ 0.5 y) (/ 0.5 x))))
* [exit]simplify:  Simplified to (+ (* (/ 0.5 x) (/ 0.5 x)) (* (/ 0.5 y) (+ (/ 0.5 y) (/ 0.5 x))))
* * * * [misc]progress:  [ 13 / 18 ] simplifiying candidate #<alt-delta (λ (x y) (+ (/ 0.5 y) (- (/ 0.5 x))))>
* [enter]simplify:  Simplifying (- (/ 0.5 x))
* * [misc]simplify:  iters left: 4 (4 enodes)
* * [misc]simplify:  iters left: 3 (6 enodes)
* [exit]simplify:  Simplified to (- (/ 0.5 x))
* [exit]simplify:  Simplified to (- (/ 0.5 x))
* * * * [misc]progress:  [ 14 / 18 ] simplifiying candidate #<alt-delta (λ (x y) (* 1 (- (/ 0.5 y) (/ 0.5 x))))>
* * * * [misc]progress:  [ 15 / 18 ] simplifiying candidate #<alt-delta (λ (x y) (/ (- (* (/ 0.5 y) (/ 0.5 y)) (* (/ 0.5 x) (/ 0.5 x))) (+ (/ 0.5 y) (/ 0.5 x))))>
* [enter]simplify:  Simplifying (- (* (/ 0.5 y) (/ 0.5 y)) (* (/ 0.5 x) (/ 0.5 x)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (19 enodes)
* * [misc]simplify:  iters left: 4 (28 enodes)
* * [misc]simplify:  iters left: 3 (45 enodes)
* * [misc]simplify:  iters left: 2 (65 enodes)
* * [misc]simplify:  iters left: 1 (76 enodes)
* [exit]simplify:  Simplified to (* (+ (/ 0.5 y) (/ 0.5 x)) (- (/ 0.5 y) (/ 0.5 x)))
* [exit]simplify:  Simplified to (* (+ (/ 0.5 y) (/ 0.5 x)) (- (/ 0.5 y) (/ 0.5 x)))
* [enter]simplify:  Simplifying (+ (/ 0.5 y) (/ 0.5 x))
* * [misc]simplify:  iters left: 4 (6 enodes)
* * [misc]simplify:  iters left: 3 (7 enodes)
* [exit]simplify:  Simplified to (+ (/ 0.5 x) (/ 0.5 y))
* [exit]simplify:  Simplified to (+ (/ 0.5 x) (/ 0.5 y))
* * * * [misc]progress:  [ 16 / 18 ] simplifiying candidate #<alt-delta (λ (x y) (* (+ (sqrt (/ 0.5 y)) (sqrt (/ 0.5 x))) (- (sqrt (/ 0.5 y)) (sqrt (/ 0.5 x)))))>
* [enter]simplify:  Simplifying (+ (sqrt (/ 0.5 y)) (sqrt (/ 0.5 x)))
* * [misc]simplify:  iters left: 5 (8 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* [exit]simplify:  Simplified to (+ (sqrt (/ 0.5 x)) (sqrt (/ 0.5 y)))
* [exit]simplify:  Simplified to (+ (sqrt (/ 0.5 x)) (sqrt (/ 0.5 y)))
* [enter]simplify:  Simplifying (- (sqrt (/ 0.5 y)) (sqrt (/ 0.5 x)))
* * [misc]simplify:  iters left: 5 (8 enodes)
* [exit]simplify:  Simplified to (- (sqrt (/ 0.5 y)) (sqrt (/ 0.5 x)))
* [exit]simplify:  Simplified to (- (sqrt (/ 0.5 y)) (sqrt (/ 0.5 x)))
* * * * [misc]progress:  [ 17 / 18 ] simplifiying candidate #<alt-delta (λ (x y) (* 1 (- (/ 0.5 y) (/ 0.5 x))))>
* [enter]simplify:  Simplifying (- (/ 0.5 y) (/ 0.5 x))
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (- (/ 0.5 y) (/ 0.5 x))
* [exit]simplify:  Simplified to (- (/ 0.5 y) (/ 0.5 x))
* * * * [misc]progress:  [ 18 / 18 ] simplifiying candidate #<alt-delta (λ (x y) (* 0.5 (- (/ 1 y) (/ 1 x))))>
* [enter]simplify:  Simplifying (- (/ 1 y) (/ 1 x))
* * [misc]simplify:  iters left: 4 (6 enodes)
* * [misc]simplify:  iters left: 3 (8 enodes)
* [exit]simplify:  Simplified to (- (/ 1 y) (/ 1 x))
* [exit]simplify:  Simplified to (- (/ 1 y) (/ 1 x))
* * * [misc]progress:  adding candidates to table
* [misc]progress:  [Phase 3 of 3] Extracting.
* [enter]simplify:  Simplifying (/ 0.5 y)
* * [misc]simplify:  iters left: 2 (3 enodes)
* [exit]simplify:  Simplified to (/ 0.5 y)
* [exit]simplify:  Simplified to (/ 0.5 y)
* [enter]simplify:  Simplifying (/ 0.5 x)
* * [misc]simplify:  iters left: 2 (3 enodes)
* [exit]simplify:  Simplified to (/ 0.5 x)
* [exit]simplify:  Simplified to (/ 0.5 x)