* [misc]progress:  [Phase 1 of 3] Setting up.
* * * [misc]progress:  [1/2] Preparing points
* * * [misc]progress:  [2/2] Setting up program.
* [enter]simplify:  Simplifying (/ a (- (acos a)))
* * [misc]simplify:  iters left: 5 (4 enodes)
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* [misc]progress:  [Phase 2 of 3] Improving.
* * [misc]progress:  iteration 1 / 3
* * * [misc]progress:  picking best candidate
* * * * [misc]pick:  Picked  #<alt-event (λ (a) (/ a (- (acos a))))>
* * * [misc]progress:  localizing error
* * * [misc]progress:  generating series expansions
* * * * [misc]progress:  [ 1 / 1 ] generating series at (2)
* [misc]approximate:  Taking taylor expansion of (/ a (- (acos a))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ a (- (acos a))) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos a))) into (/ -1 (acos a))
* [misc]taylor:  Taking taylor expansion of (/ a (- (acos a))) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos a))) into (/ -1 (acos a))
* [misc]backup-simplify:  Simplify (/ -1 (acos a)) into (/ -1 (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ -1 (acos a)) a) into (* -1 (/ a (acos a)))
* [misc]approximate:  Taking taylor expansion of (/ (/ 1 a) (- (acos (/ 1 a)))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 a) (- (acos (/ 1 a)))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 a) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [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 (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos (/ 1 a)))) into (/ -1 (acos (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 a) (- (acos (/ 1 a)))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 a) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [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 (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos (/ 1 a)))) into (/ -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ -1 (acos (/ 1 a))) into (/ -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))))) 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 (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) 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 (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) 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 (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) 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)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) 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)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ -1 (acos (/ 1 a))) (/ 1 (/ 1 a))) into (* -1 (/ a (acos (/ 1 a))))
* [misc]approximate:  Taking taylor expansion of (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 (- a)) in a
* [misc]taylor:  Taking taylor expansion of (- a) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [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 (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ -1 (- (acos (/ -1 a)))) into (/ 1 (acos (/ -1 a)))
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 (- a)) in a
* [misc]taylor:  Taking taylor expansion of (- a) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [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 (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ -1 (- (acos (/ -1 a)))) into (/ 1 (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (acos (/ -1 a))) into (/ 1 (acos (/ -1 a)))
* [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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))))) 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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) 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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) 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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) 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 (- 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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) 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 (- 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)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ 1 (acos (/ -1 a))) (/ 1 (/ 1 (- a)))) into (* -1 (/ a (acos (/ -1 a))))
* * * [misc]progress:  generating rewritten candidates
* * * * [misc]progress:  [ 1 / 1 ] rewriting at (2)
* * * [misc]progress:  simplifying candidates
* * * * [misc]progress:  [ 1 / 19 ] simplifiying candidate #<alt-event (λ (a) (* -1 (/ a (acos a))))>
* [enter]simplify:  Simplifying (* -1 (/ a (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* * [misc]simplify:  iters left: 3 (12 enodes)
* * [misc]simplify:  iters left: 2 (16 enodes)
* * [misc]simplify:  iters left: 1 (18 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 2 / 19 ] simplifiying candidate #<alt-event (λ (a) (* -1 (/ a (acos (/ 1 a)))))>
* [enter]simplify:  Simplifying (* -1 (/ a (acos (/ 1 a))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (16 enodes)
* * [misc]simplify:  iters left: 3 (20 enodes)
* * [misc]simplify:  iters left: 2 (22 enodes)
* * [misc]simplify:  iters left: 1 (23 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos (/ 1 a)))
* * * * [misc]progress:  [ 3 / 19 ] simplifiying candidate #<alt-event (λ (a) (* -1 (/ a (acos (/ -1 a)))))>
* [enter]simplify:  Simplifying (* -1 (/ a (acos (/ -1 a))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* * [misc]simplify:  iters left: 3 (17 enodes)
* * [misc]simplify:  iters left: 2 (19 enodes)
* * [misc]simplify:  iters left: 1 (20 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos (/ -1 a)))
* * * * [misc]progress:  [ 4 / 19 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (/ a (- (acos a))))))>
* [enter]simplify:  Simplifying (expm1 (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (expm1 (/ a (- (acos a))))
* [exit]simplify:  Simplified to (expm1 (/ a (- (acos a))))
* * * * [misc]progress:  [ 5 / 19 ] simplifiying candidate #<alt-delta (λ (a) (expm1 (log1p (/ a (- (acos a))))))>
* [enter]simplify:  Simplifying (log1p (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (log1p (/ a (- (acos a))))
* [exit]simplify:  Simplified to (log1p (/ a (- (acos a))))
* * * * [misc]progress:  [ 6 / 19 ] simplifiying candidate #<alt-delta (λ (a) (pow (/ a (- (acos a))) 1))>
* * * * [misc]progress:  [ 7 / 19 ] simplifiying candidate #<alt-delta (λ (a) (exp (log (/ a (- (acos a))))))>
* [enter]simplify:  Simplifying (log (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* * * * [misc]progress:  [ 8 / 19 ] simplifiying candidate #<alt-delta (λ (a) (log (exp (/ a (- (acos a))))))>
* [enter]simplify:  Simplifying (exp (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* * * * [misc]progress:  [ 9 / 19 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (/ a (- (acos a))))))>
* [enter]simplify:  Simplifying (cbrt (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 10 / 19 ] simplifiying candidate #<alt-delta (λ (a) (cbrt (cube (/ a (- (acos a))))))>
* [enter]simplify:  Simplifying (cube (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* * [misc]simplify:  iters left: 4 (22 enodes)
* * [misc]simplify:  iters left: 3 (36 enodes)
* * [misc]simplify:  iters left: 2 (64 enodes)
* * [misc]simplify:  iters left: 1 (113 enodes)
* [exit]simplify:  Simplified to (cube (/ a (- (acos a))))
* [exit]simplify:  Simplified to (cube (/ a (- (acos a))))
* * * * [misc]progress:  [ 11 / 19 ] simplifiying candidate #<alt-delta (λ (a) (sqr (sqrt (/ a (- (acos a))))))>
* [enter]simplify:  Simplifying (sqrt (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 12 / 19 ] simplifiying candidate #<alt-delta (λ (a) (/ (- a) (- (- (acos a)))))>
* [enter]simplify:  Simplifying (- a)
* * [misc]simplify:  iters left: 2 (2 enodes)
* [exit]simplify:  Simplified to (- a)
* [exit]simplify:  Simplified to (- a)
* [enter]simplify:  Simplifying (- (- (acos a)))
* * [misc]simplify:  iters left: 5 (4 enodes)
* [exit]simplify:  Simplified to (acos a)
* [exit]simplify:  Simplified to (acos a)
* * * * [misc]progress:  [ 13 / 19 ] simplifiying candidate #<alt-delta (λ (a) (* 1 (/ a (- (acos a)))))>
* * * * [misc]progress:  [ 14 / 19 ] simplifiying candidate #<alt-delta (λ (a) (* a (/ 1 (- (acos a)))))>
* [enter]simplify:  Simplifying (/ 1 (- (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (7 enodes)
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* * * * [misc]progress:  [ 15 / 19 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ (- (acos a)) a)))>
* [enter]simplify:  Simplifying (/ (- (acos a)) a)
* * [misc]simplify:  iters left: 5 (4 enodes)
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (- (/ (acos a) a))
* [exit]simplify:  Simplified to (- (/ (acos a) a))
* * * * [misc]progress:  [ 16 / 19 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ a 1) (- (acos a))))>
* [enter]simplify:  Simplifying (/ a 1)
* * [misc]simplify:  iters left: 2 (3 enodes)
* * [misc]simplify:  iters left: 1 (5 enodes)
* [exit]simplify:  Simplified to (/ a 1)
* [exit]simplify:  Simplified to (/ a 1)
* * * * [misc]progress:  [ 17 / 19 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ a -1) (acos a)))>
* [enter]simplify:  Simplifying (/ a -1)
* * [misc]simplify:  iters left: 2 (3 enodes)
* [exit]simplify:  Simplified to (/ a -1)
* [exit]simplify:  Simplified to (/ a -1)
* * * * [misc]progress:  [ 18 / 19 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ a (- 1)) (acos a)))>
* [enter]simplify:  Simplifying (/ a (- 1))
* * [misc]simplify:  iters left: 4 (4 enodes)
* * [misc]simplify:  iters left: 3 (6 enodes)
* [exit]simplify:  Simplified to (/ a (- 1))
* [exit]simplify:  Simplified to (/ a (- 1))
* * * * [misc]progress:  [ 19 / 19 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ a 1) (- (acos a))))>
* [enter]simplify:  Simplifying (/ a 1)
* * [misc]simplify:  iters left: 2 (3 enodes)
* * [misc]simplify:  iters left: 1 (5 enodes)
* [exit]simplify:  Simplified to (/ a 1)
* [exit]simplify:  Simplified to (/ a 1)
* * * [misc]progress:  adding candidates to table
* * [misc]progress:  iteration 2 / 3
* * * [misc]progress:  picking best candidate
* * * * [misc]pick:  Picked  #<alt-delta (λ (a) (log1p (expm1 (/ a (- (acos a))))))>
* * * [misc]progress:  localizing error
* * * [misc]progress:  generating series expansions
* * * * [misc]progress:  [ 1 / 3 ] generating series at (2 1 1)
* [misc]approximate:  Taking taylor expansion of (/ a (- (acos a))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ a (- (acos a))) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos a))) into (/ -1 (acos a))
* [misc]taylor:  Taking taylor expansion of (/ a (- (acos a))) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos a))) into (/ -1 (acos a))
* [misc]backup-simplify:  Simplify (/ -1 (acos a)) into (/ -1 (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ -1 (acos a)) a) into (* -1 (/ a (acos a)))
* [misc]approximate:  Taking taylor expansion of (/ (/ 1 a) (- (acos (/ 1 a)))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 a) (- (acos (/ 1 a)))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 a) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [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 (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos (/ 1 a)))) into (/ -1 (acos (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 a) (- (acos (/ 1 a)))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 a) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [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 (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos (/ 1 a)))) into (/ -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ -1 (acos (/ 1 a))) into (/ -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))))) 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 (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) 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 (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) 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 (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) 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)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) 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)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ -1 (acos (/ 1 a))) (/ 1 (/ 1 a))) into (* -1 (/ a (acos (/ 1 a))))
* [misc]approximate:  Taking taylor expansion of (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 (- a)) in a
* [misc]taylor:  Taking taylor expansion of (- a) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [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 (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ -1 (- (acos (/ -1 a)))) into (/ 1 (acos (/ -1 a)))
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 (- a)) in a
* [misc]taylor:  Taking taylor expansion of (- a) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [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 (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ -1 (- (acos (/ -1 a)))) into (/ 1 (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (acos (/ -1 a))) into (/ 1 (acos (/ -1 a)))
* [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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))))) 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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) 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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) 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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) 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 (- 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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) 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 (- 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)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ 1 (acos (/ -1 a))) (/ 1 (/ 1 (- a)))) into (* -1 (/ a (acos (/ -1 a))))
* * * * [misc]progress:  [ 2 / 3 ] generating series at (2)
* [misc]approximate:  Taking taylor expansion of (log1p (expm1 (/ a (- (acos a))))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (log1p (expm1 (/ a (- (acos a))))) in a
* [misc]backup-simplify:  Simplify (log1p (expm1 (/ a (- (acos a))))) into (log1p (expm1 (* -1 (/ a (acos a)))))
* [misc]taylor:  Taking taylor expansion of (log1p (expm1 (/ a (- (acos a))))) in a
* [misc]backup-simplify:  Simplify (log1p (expm1 (/ a (- (acos a))))) into (log1p (expm1 (* -1 (/ a (acos a)))))
* [misc]backup-simplify:  Simplify (log1p (expm1 (* -1 (/ a (acos a))))) into (log1p (expm1 (* -1 (/ a (acos a)))))
* [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 (log1p (expm1 (* -1 (/ a (acos a))))) into (log1p (expm1 (* -1 (/ a (acos a)))))
* [misc]approximate:  Taking taylor expansion of (log1p (expm1 (/ (/ 1 a) (- (acos (/ 1 a)))))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (log1p (expm1 (/ (/ 1 a) (- (acos (/ 1 a)))))) in a
* [misc]backup-simplify:  Simplify (log1p (expm1 (/ (/ 1 a) (- (acos (/ 1 a)))))) into (log1p (expm1 (/ -1 (* (acos (/ 1 a)) a))))
* [misc]taylor:  Taking taylor expansion of (log1p (expm1 (/ (/ 1 a) (- (acos (/ 1 a)))))) in a
* [misc]backup-simplify:  Simplify (log1p (expm1 (/ (/ 1 a) (- (acos (/ 1 a)))))) into (log1p (expm1 (/ -1 (* (acos (/ 1 a)) a))))
* [misc]backup-simplify:  Simplify (log1p (expm1 (/ -1 (* (acos (/ 1 a)) a)))) into (log1p (expm1 (/ -1 (* (acos (/ 1 a)) a))))
* [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 (log1p (expm1 (/ -1 (* (acos (/ 1 a)) a)))) into (log1p (expm1 (/ -1 (* (acos (/ 1 a)) a))))
* [misc]approximate:  Taking taylor expansion of (log1p (expm1 (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (log1p (expm1 (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))))) in a
* [misc]backup-simplify:  Simplify (log1p (expm1 (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))))) into (log1p (expm1 (/ 1 (* a (acos (/ -1 a))))))
* [misc]taylor:  Taking taylor expansion of (log1p (expm1 (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))))) in a
* [misc]backup-simplify:  Simplify (log1p (expm1 (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))))) into (log1p (expm1 (/ 1 (* a (acos (/ -1 a))))))
* [misc]backup-simplify:  Simplify (log1p (expm1 (/ 1 (* a (acos (/ -1 a)))))) into (log1p (expm1 (/ 1 (* a (acos (/ -1 a))))))
* [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 (log1p (expm1 (/ 1 (* a (acos (/ -1 a)))))) into (log1p (expm1 (/ 1 (* a (acos (/ -1 a))))))
* * * * [misc]progress:  [ 3 / 3 ] generating series at (2 1)
* [misc]approximate:  Taking taylor expansion of (expm1 (/ a (- (acos a)))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (expm1 (/ a (- (acos a)))) in a
* [misc]backup-simplify:  Simplify (expm1 (/ a (- (acos a)))) into (expm1 (* -1 (/ a (acos a))))
* [misc]taylor:  Taking taylor expansion of (expm1 (/ a (- (acos a)))) in a
* [misc]backup-simplify:  Simplify (expm1 (/ a (- (acos a)))) into (expm1 (* -1 (/ a (acos a))))
* [misc]backup-simplify:  Simplify (expm1 (* -1 (/ a (acos a)))) into (expm1 (* -1 (/ a (acos a))))
* [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 (expm1 (* -1 (/ a (acos a)))) into (expm1 (* -1 (/ a (acos a))))
* [misc]approximate:  Taking taylor expansion of (expm1 (/ (/ 1 a) (- (acos (/ 1 a))))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (expm1 (/ (/ 1 a) (- (acos (/ 1 a))))) in a
* [misc]backup-simplify:  Simplify (expm1 (/ (/ 1 a) (- (acos (/ 1 a))))) into (expm1 (/ -1 (* (acos (/ 1 a)) a)))
* [misc]taylor:  Taking taylor expansion of (expm1 (/ (/ 1 a) (- (acos (/ 1 a))))) in a
* [misc]backup-simplify:  Simplify (expm1 (/ (/ 1 a) (- (acos (/ 1 a))))) into (expm1 (/ -1 (* (acos (/ 1 a)) a)))
* [misc]backup-simplify:  Simplify (expm1 (/ -1 (* (acos (/ 1 a)) a))) into (expm1 (/ -1 (* (acos (/ 1 a)) a)))
* [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 (expm1 (/ -1 (* (acos (/ 1 a)) a))) into (expm1 (/ -1 (* (acos (/ 1 a)) a)))
* [misc]approximate:  Taking taylor expansion of (expm1 (/ (/ 1 (- a)) (- (acos (/ 1 (- a)))))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (expm1 (/ (/ 1 (- a)) (- (acos (/ 1 (- a)))))) in a
* [misc]backup-simplify:  Simplify (expm1 (/ (/ 1 (- a)) (- (acos (/ 1 (- a)))))) into (expm1 (/ 1 (* a (acos (/ -1 a)))))
* [misc]taylor:  Taking taylor expansion of (expm1 (/ (/ 1 (- a)) (- (acos (/ 1 (- a)))))) in a
* [misc]backup-simplify:  Simplify (expm1 (/ (/ 1 (- a)) (- (acos (/ 1 (- a)))))) into (expm1 (/ 1 (* a (acos (/ -1 a)))))
* [misc]backup-simplify:  Simplify (expm1 (/ 1 (* a (acos (/ -1 a))))) into (expm1 (/ 1 (* a (acos (/ -1 a)))))
* [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 (expm1 (/ 1 (* a (acos (/ -1 a))))) into (expm1 (/ 1 (* a (acos (/ -1 a)))))
* * * [misc]progress:  generating rewritten candidates
* * * * [misc]progress:  [ 1 / 3 ] rewriting at (2 1 1)
* * * * [misc]progress:  [ 2 / 3 ] rewriting at (2)
* * * * [misc]progress:  [ 3 / 3 ] rewriting at (2 1)
* * * [misc]progress:  simplifying candidates
* * * * [misc]progress:  [ 1 / 45 ] simplifiying candidate #<alt-event (λ (a) (log1p (expm1 (* -1 (/ a (acos a))))))>
* [enter]simplify:  Simplifying (log1p (expm1 (* -1 (/ a (acos a)))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* * [misc]simplify:  iters left: 4 (14 enodes)
* * [misc]simplify:  iters left: 3 (18 enodes)
* * [misc]simplify:  iters left: 2 (20 enodes)
* * [misc]simplify:  iters left: 1 (21 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 2 / 45 ] simplifiying candidate #<alt-event (λ (a) (log1p (expm1 (* -1 (/ a (acos (/ 1 a)))))))>
* [enter]simplify:  Simplifying (log1p (expm1 (* -1 (/ a (acos (/ 1 a))))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* * [misc]simplify:  iters left: 4 (18 enodes)
* * [misc]simplify:  iters left: 3 (22 enodes)
* * [misc]simplify:  iters left: 2 (24 enodes)
* * [misc]simplify:  iters left: 1 (25 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos (/ 1 a)))
* * * * [misc]progress:  [ 3 / 45 ] simplifiying candidate #<alt-event (λ (a) (log1p (expm1 (* -1 (/ a (acos (/ -1 a)))))))>
* [enter]simplify:  Simplifying (log1p (expm1 (* -1 (/ a (acos (/ -1 a))))))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (15 enodes)
* * [misc]simplify:  iters left: 3 (19 enodes)
* * [misc]simplify:  iters left: 2 (21 enodes)
* * [misc]simplify:  iters left: 1 (22 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos (/ -1 a)))
* * * * [misc]progress:  [ 4 / 45 ] simplifiying candidate #<alt-event (λ (a) (log1p (expm1 (* -1 (/ a (acos a))))))>
* [enter]simplify:  Simplifying (log1p (expm1 (* -1 (/ a (acos a)))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* * [misc]simplify:  iters left: 4 (14 enodes)
* * [misc]simplify:  iters left: 3 (18 enodes)
* * [misc]simplify:  iters left: 2 (20 enodes)
* * [misc]simplify:  iters left: 1 (21 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 5 / 45 ] simplifiying candidate #<alt-event (λ (a) (log1p (expm1 (/ -1 (* (acos (/ 1 a)) a)))))>
* [enter]simplify:  Simplifying (log1p (expm1 (/ -1 (* (acos (/ 1 a)) a))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* [exit]simplify:  Simplified to (/ -1 (* (acos (/ 1 a)) a))
* * * * [misc]progress:  [ 6 / 45 ] simplifiying candidate #<alt-event (λ (a) (log1p (expm1 (/ 1 (* a (acos (/ -1 a)))))))>
* [enter]simplify:  Simplifying (log1p (expm1 (/ 1 (* a (acos (/ -1 a))))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 a) (acos (/ -1 a)))
* * * * [misc]progress:  [ 7 / 45 ] simplifiying candidate #<alt-event (λ (a) (log1p (expm1 (* -1 (/ a (acos a))))))>
* [enter]simplify:  Simplifying (log1p (expm1 (* -1 (/ a (acos a)))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* * [misc]simplify:  iters left: 4 (14 enodes)
* * [misc]simplify:  iters left: 3 (18 enodes)
* * [misc]simplify:  iters left: 2 (20 enodes)
* * [misc]simplify:  iters left: 1 (21 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 8 / 45 ] simplifiying candidate #<alt-event (λ (a) (log1p (expm1 (/ -1 (* (acos (/ 1 a)) a)))))>
* [enter]simplify:  Simplifying (log1p (expm1 (/ -1 (* (acos (/ 1 a)) a))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* [exit]simplify:  Simplified to (/ -1 (* (acos (/ 1 a)) a))
* * * * [misc]progress:  [ 9 / 45 ] simplifiying candidate #<alt-event (λ (a) (log1p (expm1 (/ 1 (* a (acos (/ -1 a)))))))>
* [enter]simplify:  Simplifying (log1p (expm1 (/ 1 (* a (acos (/ -1 a))))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 a) (acos (/ -1 a)))
* * * * [misc]progress:  [ 10 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (log1p (expm1 (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (expm1 (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (expm1 (/ a (- (acos a))))
* [exit]simplify:  Simplified to (expm1 (/ a (- (acos a))))
* * * * [misc]progress:  [ 11 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (expm1 (log1p (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (log1p (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (log1p (/ a (- (acos a))))
* [exit]simplify:  Simplified to (log1p (/ a (- (acos a))))
* * * * [misc]progress:  [ 12 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (pow (/ a (- (acos a))) 1))))>
* * * * [misc]progress:  [ 13 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (exp (log (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (log (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* * * * [misc]progress:  [ 14 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (log (exp (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (exp (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* * * * [misc]progress:  [ 15 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (cube (cbrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (cbrt (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 16 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (cbrt (cube (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (cube (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* * [misc]simplify:  iters left: 4 (22 enodes)
* * [misc]simplify:  iters left: 3 (36 enodes)
* * [misc]simplify:  iters left: 2 (64 enodes)
* * [misc]simplify:  iters left: 1 (113 enodes)
* [exit]simplify:  Simplified to (cube (/ a (- (acos a))))
* [exit]simplify:  Simplified to (cube (/ a (- (acos a))))
* * * * [misc]progress:  [ 17 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (sqr (sqrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (sqrt (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 18 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (/ (- a) (- (- (acos a)))))))>
* [enter]simplify:  Simplifying (- a)
* * [misc]simplify:  iters left: 2 (2 enodes)
* [exit]simplify:  Simplified to (- a)
* [exit]simplify:  Simplified to (- a)
* [enter]simplify:  Simplifying (- (- (acos a)))
* * [misc]simplify:  iters left: 5 (4 enodes)
* [exit]simplify:  Simplified to (acos a)
* [exit]simplify:  Simplified to (acos a)
* * * * [misc]progress:  [ 19 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (* 1 (/ a (- (acos a)))))))>
* * * * [misc]progress:  [ 20 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (* a (/ 1 (- (acos a)))))))>
* [enter]simplify:  Simplifying (/ 1 (- (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (7 enodes)
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* * * * [misc]progress:  [ 21 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (/ 1 (/ (- (acos a)) a)))))>
* [enter]simplify:  Simplifying (/ (- (acos a)) a)
* * [misc]simplify:  iters left: 5 (4 enodes)
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (- (/ (acos a) a))
* [exit]simplify:  Simplified to (- (/ (acos a) a))
* * * * [misc]progress:  [ 22 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (/ (/ a 1) (- (acos a))))))>
* [enter]simplify:  Simplifying (/ a 1)
* * [misc]simplify:  iters left: 2 (3 enodes)
* * [misc]simplify:  iters left: 1 (5 enodes)
* [exit]simplify:  Simplified to (/ a 1)
* [exit]simplify:  Simplified to (/ a 1)
* * * * [misc]progress:  [ 23 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (/ (/ a -1) (acos a)))))>
* [enter]simplify:  Simplifying (/ a -1)
* * [misc]simplify:  iters left: 2 (3 enodes)
* [exit]simplify:  Simplified to (/ a -1)
* [exit]simplify:  Simplified to (/ a -1)
* * * * [misc]progress:  [ 24 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (/ (/ a (- 1)) (acos a)))))>
* [enter]simplify:  Simplifying (/ a (- 1))
* * [misc]simplify:  iters left: 4 (4 enodes)
* * [misc]simplify:  iters left: 3 (6 enodes)
* [exit]simplify:  Simplified to (/ a (- 1))
* [exit]simplify:  Simplified to (/ a (- 1))
* * * * [misc]progress:  [ 25 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (/ (/ a 1) (- (acos a))))))>
* [enter]simplify:  Simplifying (/ a 1)
* * [misc]simplify:  iters left: 2 (3 enodes)
* * [misc]simplify:  iters left: 1 (5 enodes)
* [exit]simplify:  Simplified to (/ a 1)
* [exit]simplify:  Simplified to (/ a 1)
* * * * [misc]progress:  [ 26 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log (+ 1 (expm1 (/ a (- (acos a)))))))>
* [enter]simplify:  Simplifying (+ 1 (expm1 (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* [exit]simplify:  Simplified to (+ 1 (expm1 (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (+ 1 (expm1 (/ a (- (acos a)))))
* * * * [misc]progress:  [ 27 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (log1p (expm1 (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (expm1 (log1p (expm1 (/ a (- (acos a))))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* [exit]simplify:  Simplified to (expm1 (/ a (- (acos a))))
* [exit]simplify:  Simplified to (expm1 (/ a (- (acos a))))
* * * * [misc]progress:  [ 28 / 45 ] simplifiying candidate #<alt-delta (λ (a) (expm1 (log1p (log1p (expm1 (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (log1p (log1p (expm1 (/ a (- (acos a))))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* [exit]simplify:  Simplified to (log1p (/ a (- (acos a))))
* [exit]simplify:  Simplified to (log1p (/ a (- (acos a))))
* * * * [misc]progress:  [ 29 / 45 ] simplifiying candidate #<alt-delta (λ (a) (pow (log1p (expm1 (/ a (- (acos a))))) 1))>
* * * * [misc]progress:  [ 30 / 45 ] simplifiying candidate #<alt-delta (λ (a) (exp (log (log1p (expm1 (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (log (log1p (expm1 (/ a (- (acos a))))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* * * * [misc]progress:  [ 31 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log (exp (log1p (expm1 (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (exp (log1p (expm1 (/ a (- (acos a))))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* * * * [misc]progress:  [ 32 / 45 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (log1p (expm1 (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (cbrt (log1p (expm1 (/ a (- (acos a))))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 33 / 45 ] simplifiying candidate #<alt-delta (λ (a) (cbrt (cube (log1p (expm1 (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (cube (log1p (expm1 (/ a (- (acos a))))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (9 enodes)
* * [misc]simplify:  iters left: 4 (18 enodes)
* * [misc]simplify:  iters left: 3 (28 enodes)
* * [misc]simplify:  iters left: 2 (41 enodes)
* * [misc]simplify:  iters left: 1 (74 enodes)
* [exit]simplify:  Simplified to (cube (/ a (- (acos a))))
* [exit]simplify:  Simplified to (cube (/ a (- (acos a))))
* * * * [misc]progress:  [ 34 / 45 ] simplifiying candidate #<alt-delta (λ (a) (sqr (sqrt (log1p (expm1 (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (sqrt (log1p (expm1 (/ a (- (acos a))))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 35 / 45 ] simplifiying candidate #<alt-delta (λ (a) (* 1 (log1p (expm1 (/ a (- (acos a)))))))>
* * * * [misc]progress:  [ 36 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (- (exp (/ a (- (acos a)))) 1)))>
* [enter]simplify:  Simplifying (exp (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* * * * [misc]progress:  [ 37 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (log1p (expm1 (expm1 (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (expm1 (expm1 (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* [exit]simplify:  Simplified to (expm1 (expm1 (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (expm1 (expm1 (/ a (- (acos a)))))
* * * * [misc]progress:  [ 38 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (log1p (expm1 (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (log1p (expm1 (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* * * * [misc]progress:  [ 39 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (pow (expm1 (/ a (- (acos a)))) 1)))>
* * * * [misc]progress:  [ 40 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (exp (log (expm1 (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (log (expm1 (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* [exit]simplify:  Simplified to (log (expm1 (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (log (expm1 (/ a (- (acos a)))))
* * * * [misc]progress:  [ 41 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (log (exp (expm1 (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (exp (expm1 (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* [exit]simplify:  Simplified to (exp (expm1 (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (exp (expm1 (/ a (- (acos a)))))
* * * * [misc]progress:  [ 42 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (cube (cbrt (expm1 (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (cbrt (expm1 (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* [exit]simplify:  Simplified to (cbrt (expm1 (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (cbrt (expm1 (/ a (- (acos a)))))
* * * * [misc]progress:  [ 43 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (cbrt (cube (expm1 (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (cube (expm1 (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* [exit]simplify:  Simplified to (cube (expm1 (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (cube (expm1 (/ a (- (acos a)))))
* * * * [misc]progress:  [ 44 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (sqr (sqrt (expm1 (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (sqrt (expm1 (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* [exit]simplify:  Simplified to (sqrt (expm1 (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (sqrt (expm1 (/ a (- (acos a)))))
* * * * [misc]progress:  [ 45 / 45 ] simplifiying candidate #<alt-delta (λ (a) (log1p (* 1 (expm1 (/ a (- (acos a)))))))>
* * * [misc]progress:  adding candidates to table
* * [misc]progress:  iteration 3 / 3
* * * [misc]progress:  picking best candidate
* * * * [misc]pick:  Picked  #<alt-delta (λ (a) (cube (cbrt (/ a (- (acos a))))))>
* * * [misc]progress:  localizing error
* * * [misc]progress:  generating series expansions
* * * * [misc]progress:  [ 1 / 3 ] generating series at (2)
* [misc]approximate:  Taking taylor expansion of (cube (cbrt (/ a (- (acos a))))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (cube (cbrt (/ a (- (acos a))))) in a
* [misc]backup-simplify:  Simplify (cube (cbrt (/ a (- (acos a))))) into (* -1 (/ a (acos a)))
* [misc]taylor:  Taking taylor expansion of (cube (cbrt (/ a (- (acos a))))) in a
* [misc]backup-simplify:  Simplify (cube (cbrt (/ a (- (acos a))))) into (* -1 (/ a (acos a)))
* [misc]backup-simplify:  Simplify (* -1 (/ a (acos a))) into (* -1 (/ a (acos a)))
* [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 (* -1 (/ a (acos a))) into (* -1 (/ a (acos a)))
* [misc]approximate:  Taking taylor expansion of (cube (cbrt (/ (/ 1 a) (- (acos (/ 1 a)))))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (cube (cbrt (/ (/ 1 a) (- (acos (/ 1 a)))))) in a
* [misc]backup-simplify:  Simplify (cube (cbrt (/ (/ 1 a) (- (acos (/ 1 a)))))) into (/ -1 (* (acos (/ 1 a)) a))
* [misc]taylor:  Taking taylor expansion of (cube (cbrt (/ (/ 1 a) (- (acos (/ 1 a)))))) in a
* [misc]backup-simplify:  Simplify (cube (cbrt (/ (/ 1 a) (- (acos (/ 1 a)))))) into (/ -1 (* (acos (/ 1 a)) a))
* [misc]backup-simplify:  Simplify (/ -1 (* (acos (/ 1 a)) a)) into (/ -1 (* (acos (/ 1 a)) a))
* [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 (/ -1 (* (acos (/ 1 a)) a)) into (/ -1 (* (acos (/ 1 a)) a))
* [misc]approximate:  Taking taylor expansion of (cube (cbrt (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (cube (cbrt (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))))) in a
* [misc]backup-simplify:  Simplify (cube (cbrt (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))))) into (/ 1 (* a (acos (/ -1 a))))
* [misc]taylor:  Taking taylor expansion of (cube (cbrt (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))))) in a
* [misc]backup-simplify:  Simplify (cube (cbrt (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))))) into (/ 1 (* a (acos (/ -1 a))))
* [misc]backup-simplify:  Simplify (/ 1 (* a (acos (/ -1 a)))) into (/ 1 (* a (acos (/ -1 a))))
* [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 (/ 1 (* a (acos (/ -1 a)))) into (/ 1 (* a (acos (/ -1 a))))
* * * * [misc]progress:  [ 2 / 3 ] generating series at (2 1 1)
* [misc]approximate:  Taking taylor expansion of (/ a (- (acos a))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ a (- (acos a))) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos a))) into (/ -1 (acos a))
* [misc]taylor:  Taking taylor expansion of (/ a (- (acos a))) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos a))) into (/ -1 (acos a))
* [misc]backup-simplify:  Simplify (/ -1 (acos a)) into (/ -1 (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ -1 (acos a)) a) into (* -1 (/ a (acos a)))
* [misc]approximate:  Taking taylor expansion of (/ (/ 1 a) (- (acos (/ 1 a)))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 a) (- (acos (/ 1 a)))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 a) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [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 (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos (/ 1 a)))) into (/ -1 (acos (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 a) (- (acos (/ 1 a)))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 a) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [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 (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos (/ 1 a)))) into (/ -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ -1 (acos (/ 1 a))) into (/ -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))))) 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 (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) 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 (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) 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 (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) 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)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) 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)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ -1 (acos (/ 1 a))) (/ 1 (/ 1 a))) into (* -1 (/ a (acos (/ 1 a))))
* [misc]approximate:  Taking taylor expansion of (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 (- a)) in a
* [misc]taylor:  Taking taylor expansion of (- a) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [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 (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ -1 (- (acos (/ -1 a)))) into (/ 1 (acos (/ -1 a)))
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 (- a)) in a
* [misc]taylor:  Taking taylor expansion of (- a) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [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 (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ -1 (- (acos (/ -1 a)))) into (/ 1 (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (acos (/ -1 a))) into (/ 1 (acos (/ -1 a)))
* [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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))))) 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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) 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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) 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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) 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 (- 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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) 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 (- 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)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ 1 (acos (/ -1 a))) (/ 1 (/ 1 (- a)))) into (* -1 (/ a (acos (/ -1 a))))
* * * * [misc]progress:  [ 3 / 3 ] generating series at (2 1)
* [misc]approximate:  Taking taylor expansion of (cbrt (/ a (- (acos a)))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (cbrt (/ a (- (acos a)))) in a
* [misc]backup-simplify:  Simplify (cbrt (/ a (- (acos a)))) into (cbrt (* -1 (/ a (acos a))))
* [misc]taylor:  Taking taylor expansion of (cbrt (/ a (- (acos a)))) in a
* [misc]backup-simplify:  Simplify (cbrt (/ a (- (acos a)))) into (cbrt (* -1 (/ a (acos a))))
* [misc]backup-simplify:  Simplify (cbrt (* -1 (/ a (acos a)))) into (cbrt (* -1 (/ a (acos a))))
* [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 (cbrt (* -1 (/ a (acos a)))) into (cbrt (* -1 (/ a (acos a))))
* [misc]approximate:  Taking taylor expansion of (cbrt (/ (/ 1 a) (- (acos (/ 1 a))))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (cbrt (/ (/ 1 a) (- (acos (/ 1 a))))) in a
* [misc]backup-simplify:  Simplify (cbrt (/ (/ 1 a) (- (acos (/ 1 a))))) into (cbrt (/ -1 (* (acos (/ 1 a)) a)))
* [misc]taylor:  Taking taylor expansion of (cbrt (/ (/ 1 a) (- (acos (/ 1 a))))) in a
* [misc]backup-simplify:  Simplify (cbrt (/ (/ 1 a) (- (acos (/ 1 a))))) into (cbrt (/ -1 (* (acos (/ 1 a)) a)))
* [misc]backup-simplify:  Simplify (cbrt (/ -1 (* (acos (/ 1 a)) a))) into (cbrt (/ -1 (* (acos (/ 1 a)) a)))
* [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 (cbrt (/ -1 (* (acos (/ 1 a)) a))) into (cbrt (/ -1 (* (acos (/ 1 a)) a)))
* [misc]approximate:  Taking taylor expansion of (cbrt (/ (/ 1 (- a)) (- (acos (/ 1 (- a)))))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (cbrt (/ (/ 1 (- a)) (- (acos (/ 1 (- a)))))) in a
* [misc]backup-simplify:  Simplify (cbrt (/ (/ 1 (- a)) (- (acos (/ 1 (- a)))))) into (cbrt (/ 1 (* a (acos (/ -1 a)))))
* [misc]taylor:  Taking taylor expansion of (cbrt (/ (/ 1 (- a)) (- (acos (/ 1 (- a)))))) in a
* [misc]backup-simplify:  Simplify (cbrt (/ (/ 1 (- a)) (- (acos (/ 1 (- a)))))) into (cbrt (/ 1 (* a (acos (/ -1 a)))))
* [misc]backup-simplify:  Simplify (cbrt (/ 1 (* a (acos (/ -1 a))))) into (cbrt (/ 1 (* a (acos (/ -1 a)))))
* [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 (cbrt (/ 1 (* a (acos (/ -1 a))))) into (cbrt (/ 1 (* a (acos (/ -1 a)))))
* * * [misc]progress:  generating rewritten candidates
* * * * [misc]progress:  [ 1 / 3 ] rewriting at (2)
* * * * [misc]progress:  [ 2 / 3 ] rewriting at (2 1 1)
* * * * [misc]progress:  [ 3 / 3 ] rewriting at (2 1)
* * * [misc]progress:  simplifying candidates
* * * * [misc]progress:  [ 1 / 53 ] simplifiying candidate #<alt-event (λ (a) (* -1 (/ a (acos a))))>
* [enter]simplify:  Simplifying (* -1 (/ a (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* * [misc]simplify:  iters left: 3 (12 enodes)
* * [misc]simplify:  iters left: 2 (16 enodes)
* * [misc]simplify:  iters left: 1 (18 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 2 / 53 ] simplifiying candidate #<alt-event (λ (a) (/ -1 (* (acos (/ 1 a)) a)))>
* [enter]simplify:  Simplifying (/ -1 (* (acos (/ 1 a)) a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* [exit]simplify:  Simplified to (/ (/ -1 (acos (/ 1 a))) a)
* * * * [misc]progress:  [ 3 / 53 ] simplifiying candidate #<alt-event (λ (a) (/ 1 (* a (acos (/ -1 a)))))>
* [enter]simplify:  Simplifying (/ 1 (* a (acos (/ -1 a))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 a) (acos (/ -1 a)))
* * * * [misc]progress:  [ 4 / 53 ] simplifiying candidate #<alt-event (λ (a) (cube (cbrt (* -1 (/ a (acos a))))))>
* [enter]simplify:  Simplifying (cube (cbrt (* -1 (/ a (acos a)))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (18 enodes)
* * [misc]simplify:  iters left: 3 (20 enodes)
* * [misc]simplify:  iters left: 2 (24 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 5 / 53 ] simplifiying candidate #<alt-event (λ (a) (cube (cbrt (* -1 (/ a (acos (/ 1 a)))))))>
* [enter]simplify:  Simplifying (cube (cbrt (* -1 (/ a (acos (/ 1 a))))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (16 enodes)
* * [misc]simplify:  iters left: 4 (22 enodes)
* * [misc]simplify:  iters left: 3 (24 enodes)
* * [misc]simplify:  iters left: 2 (28 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos (/ 1 a)))
* * * * [misc]progress:  [ 6 / 53 ] simplifiying candidate #<alt-event (λ (a) (cube (cbrt (* -1 (/ a (acos (/ -1 a)))))))>
* [enter]simplify:  Simplifying (cube (cbrt (* -1 (/ a (acos (/ -1 a))))))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (19 enodes)
* * [misc]simplify:  iters left: 3 (21 enodes)
* * [misc]simplify:  iters left: 2 (25 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos (/ -1 a)))
* * * * [misc]progress:  [ 7 / 53 ] simplifiying candidate #<alt-event (λ (a) (cube (cbrt (* -1 (/ a (acos a))))))>
* [enter]simplify:  Simplifying (cube (cbrt (* -1 (/ a (acos a)))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (18 enodes)
* * [misc]simplify:  iters left: 3 (20 enodes)
* * [misc]simplify:  iters left: 2 (24 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 8 / 53 ] simplifiying candidate #<alt-event (λ (a) (cube (cbrt (/ -1 (* (acos (/ 1 a)) a)))))>
* [enter]simplify:  Simplifying (cube (cbrt (/ -1 (* (acos (/ 1 a)) a))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (16 enodes)
* * [misc]simplify:  iters left: 4 (18 enodes)
* * [misc]simplify:  iters left: 3 (20 enodes)
* [exit]simplify:  Simplified to (/ (/ -1 a) (acos (/ 1 a)))
* * * * [misc]progress:  [ 9 / 53 ] simplifiying candidate #<alt-event (λ (a) (cube (cbrt (/ 1 (* a (acos (/ -1 a)))))))>
* [enter]simplify:  Simplifying (cube (cbrt (/ 1 (* a (acos (/ -1 a))))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (16 enodes)
* * [misc]simplify:  iters left: 4 (18 enodes)
* * [misc]simplify:  iters left: 3 (20 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 a) (acos (/ -1 a)))
* * * * [misc]progress:  [ 10 / 53 ] simplifiying candidate #<alt-delta (λ (a) (log1p (expm1 (cube (cbrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (expm1 (cube (cbrt (/ a (- (acos a))))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (9 enodes)
* * [misc]simplify:  iters left: 4 (11 enodes)
* [exit]simplify:  Simplified to (expm1 (/ a (- (acos a))))
* [exit]simplify:  Simplified to (expm1 (/ a (- (acos a))))
* * * * [misc]progress:  [ 11 / 53 ] simplifiying candidate #<alt-delta (λ (a) (expm1 (log1p (cube (cbrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (log1p (cube (cbrt (/ a (- (acos a))))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (9 enodes)
* * [misc]simplify:  iters left: 4 (11 enodes)
* [exit]simplify:  Simplified to (log1p (/ a (- (acos a))))
* [exit]simplify:  Simplified to (log1p (/ a (- (acos a))))
* * * * [misc]progress:  [ 12 / 53 ] simplifiying candidate #<alt-delta (λ (a) (pow (cbrt (/ a (- (acos a)))) 3))>
* * * * [misc]progress:  [ 13 / 53 ] simplifiying candidate #<alt-delta (λ (a) (pow (cube (cbrt (/ a (- (acos a))))) 1))>
* * * * [misc]progress:  [ 14 / 53 ] simplifiying candidate #<alt-delta (λ (a) (exp (log (cube (cbrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (log (cube (cbrt (/ a (- (acos a))))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (9 enodes)
* * [misc]simplify:  iters left: 4 (17 enodes)
* * [misc]simplify:  iters left: 3 (19 enodes)
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* * * * [misc]progress:  [ 15 / 53 ] simplifiying candidate #<alt-delta (λ (a) (log (exp (cube (cbrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (exp (cube (cbrt (/ a (- (acos a))))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (9 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* * * * [misc]progress:  [ 16 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (cube (cbrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (cbrt (cube (cbrt (/ a (- (acos a))))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (9 enodes)
* * [misc]simplify:  iters left: 4 (14 enodes)
* * [misc]simplify:  iters left: 3 (18 enodes)
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 17 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cbrt (cube (cube (cbrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (cube (cube (cbrt (/ a (- (acos a))))))
* * [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 (51 enodes)
* * [misc]simplify:  iters left: 2 (70 enodes)
* * [misc]simplify:  iters left: 1 (107 enodes)
* [exit]simplify:  Simplified to (cube (/ a (- (acos a))))
* [exit]simplify:  Simplified to (cube (/ a (- (acos a))))
* * * * [misc]progress:  [ 18 / 53 ] simplifiying candidate #<alt-delta (λ (a) (* (cube (cbrt 1)) (cube (cbrt (/ a (- (acos a)))))))>
* [enter]simplify:  Simplifying (cube (cbrt 1))
* * [misc]simplify:  iters left: 2 (3 enodes)
* * [misc]simplify:  iters left: 1 (7 enodes)
* [exit]simplify:  Simplified to 1
* [exit]simplify:  Simplified to 1
* [enter]simplify:  Simplifying (cube (cbrt (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* * * * [misc]progress:  [ 19 / 53 ] simplifiying candidate #<alt-delta (λ (a) (* (cube (cbrt a)) (cube (cbrt (/ 1 (- (acos a)))))))>
* [enter]simplify:  Simplifying (cube (cbrt a))
* * [misc]simplify:  iters left: 2 (3 enodes)
* * [misc]simplify:  iters left: 1 (5 enodes)
* [exit]simplify:  Simplified to a
* [exit]simplify:  Simplified to a
* [enter]simplify:  Simplifying (cube (cbrt (/ 1 (- (acos a)))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* * * * [misc]progress:  [ 20 / 53 ] simplifiying candidate #<alt-delta (λ (a) (* (cube 1) (cube (cbrt (/ a (- (acos a)))))))>
* [enter]simplify:  Simplifying (cube 1)
* * [misc]simplify:  iters left: 1 (2 enodes)
* [exit]simplify:  Simplified to (cube 1)
* [exit]simplify:  Simplified to (cube 1)
* [enter]simplify:  Simplifying (cube (cbrt (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* * * * [misc]progress:  [ 21 / 53 ] simplifiying candidate #<alt-delta (λ (a) (/ (cube (cbrt a)) (cube (cbrt (- (acos a))))))>
* [enter]simplify:  Simplifying (cube (cbrt a))
* * [misc]simplify:  iters left: 2 (3 enodes)
* * [misc]simplify:  iters left: 1 (5 enodes)
* [exit]simplify:  Simplified to a
* [exit]simplify:  Simplified to a
* [enter]simplify:  Simplifying (cube (cbrt (- (acos a))))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (7 enodes)
* * [misc]simplify:  iters left: 3 (9 enodes)
* [exit]simplify:  Simplified to (- (acos a))
* [exit]simplify:  Simplified to (- (acos a))
* * * * [misc]progress:  [ 22 / 53 ] simplifiying candidate #<alt-delta (λ (a) (* (cbrt (/ a (- (acos a)))) (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a)))))))>
* [enter]simplify:  Simplifying (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (7 enodes)
* [exit]simplify:  Simplified to (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a)))))
* * * * [misc]progress:  [ 23 / 53 ] simplifiying candidate #<alt-delta (λ (a) (sqr (sqrt (cube (cbrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (sqrt (cube (cbrt (/ a (- (acos a))))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (9 enodes)
* * [misc]simplify:  iters left: 4 (11 enodes)
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 24 / 53 ] simplifiying candidate #<alt-delta (λ (a) (* 1 (cube (cbrt (/ a (- (acos a)))))))>
* * * * [misc]progress:  [ 25 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (log1p (expm1 (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (expm1 (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (expm1 (/ a (- (acos a))))
* [exit]simplify:  Simplified to (expm1 (/ a (- (acos a))))
* * * * [misc]progress:  [ 26 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (expm1 (log1p (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (log1p (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (log1p (/ a (- (acos a))))
* [exit]simplify:  Simplified to (log1p (/ a (- (acos a))))
* * * * [misc]progress:  [ 27 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (pow (/ a (- (acos a))) 1))))>
* * * * [misc]progress:  [ 28 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (exp (log (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (log (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* * * * [misc]progress:  [ 29 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (log (exp (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (exp (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* * * * [misc]progress:  [ 30 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (cube (cbrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (cbrt (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 31 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (cbrt (cube (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (cube (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* * [misc]simplify:  iters left: 4 (22 enodes)
* * [misc]simplify:  iters left: 3 (36 enodes)
* * [misc]simplify:  iters left: 2 (64 enodes)
* * [misc]simplify:  iters left: 1 (113 enodes)
* [exit]simplify:  Simplified to (cube (/ a (- (acos a))))
* [exit]simplify:  Simplified to (cube (/ a (- (acos a))))
* * * * [misc]progress:  [ 32 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (sqr (sqrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (sqrt (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 33 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (/ (- a) (- (- (acos a)))))))>
* [enter]simplify:  Simplifying (- a)
* * [misc]simplify:  iters left: 2 (2 enodes)
* [exit]simplify:  Simplified to (- a)
* [exit]simplify:  Simplified to (- a)
* [enter]simplify:  Simplifying (- (- (acos a)))
* * [misc]simplify:  iters left: 5 (4 enodes)
* [exit]simplify:  Simplified to (acos a)
* [exit]simplify:  Simplified to (acos a)
* * * * [misc]progress:  [ 34 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (* 1 (/ a (- (acos a)))))))>
* * * * [misc]progress:  [ 35 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (* a (/ 1 (- (acos a)))))))>
* [enter]simplify:  Simplifying (/ 1 (- (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (7 enodes)
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* * * * [misc]progress:  [ 36 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (/ 1 (/ (- (acos a)) a)))))>
* [enter]simplify:  Simplifying (/ (- (acos a)) a)
* * [misc]simplify:  iters left: 5 (4 enodes)
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (- (/ (acos a) a))
* [exit]simplify:  Simplified to (- (/ (acos a) a))
* * * * [misc]progress:  [ 37 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (/ (/ a 1) (- (acos a))))))>
* [enter]simplify:  Simplifying (/ a 1)
* * [misc]simplify:  iters left: 2 (3 enodes)
* * [misc]simplify:  iters left: 1 (5 enodes)
* [exit]simplify:  Simplified to (/ a 1)
* [exit]simplify:  Simplified to (/ a 1)
* * * * [misc]progress:  [ 38 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (/ (/ a -1) (acos a)))))>
* [enter]simplify:  Simplifying (/ a -1)
* * [misc]simplify:  iters left: 2 (3 enodes)
* [exit]simplify:  Simplified to (/ a -1)
* [exit]simplify:  Simplified to (/ a -1)
* * * * [misc]progress:  [ 39 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (/ (/ a (- 1)) (acos a)))))>
* [enter]simplify:  Simplifying (/ a (- 1))
* * [misc]simplify:  iters left: 4 (4 enodes)
* * [misc]simplify:  iters left: 3 (6 enodes)
* [exit]simplify:  Simplified to (/ a (- 1))
* [exit]simplify:  Simplified to (/ a (- 1))
* * * * [misc]progress:  [ 40 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (/ (/ a 1) (- (acos a))))))>
* [enter]simplify:  Simplifying (/ a 1)
* * [misc]simplify:  iters left: 2 (3 enodes)
* * [misc]simplify:  iters left: 1 (5 enodes)
* [exit]simplify:  Simplified to (/ a 1)
* [exit]simplify:  Simplified to (/ a 1)
* * * * [misc]progress:  [ 41 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (log1p (expm1 (cbrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (expm1 (cbrt (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* [exit]simplify:  Simplified to (expm1 (cbrt (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (expm1 (cbrt (/ a (- (acos a)))))
* * * * [misc]progress:  [ 42 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (expm1 (log1p (cbrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (log1p (cbrt (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* [exit]simplify:  Simplified to (log1p (cbrt (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (log1p (cbrt (/ a (- (acos a)))))
* * * * [misc]progress:  [ 43 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (pow (/ a (- (acos a))) 1/3)))>
* * * * [misc]progress:  [ 44 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (pow (cbrt (/ a (- (acos a)))) 1)))>
* * * * [misc]progress:  [ 45 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (exp (log (cbrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (log (cbrt (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* [exit]simplify:  Simplified to (log (cbrt (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (log (cbrt (/ a (- (acos a)))))
* * * * [misc]progress:  [ 46 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (log (exp (cbrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (exp (cbrt (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* [exit]simplify:  Simplified to (exp (cbrt (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (exp (cbrt (/ a (- (acos a)))))
* * * * [misc]progress:  [ 47 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (* (cbrt 1) (cbrt (/ a (- (acos a)))))))>
* [enter]simplify:  Simplifying (cbrt 1)
* * [misc]simplify:  iters left: 1 (2 enodes)
* [exit]simplify:  Simplified to (cbrt 1)
* [exit]simplify:  Simplified to (cbrt 1)
* [enter]simplify:  Simplifying (cbrt (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 48 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (* (cbrt a) (cbrt (/ 1 (- (acos a)))))))>
* [enter]simplify:  Simplifying (cbrt a)
* * [misc]simplify:  iters left: 1 (2 enodes)
* [exit]simplify:  Simplified to (cbrt a)
* [exit]simplify:  Simplified to (cbrt a)
* [enter]simplify:  Simplifying (cbrt (/ 1 (- (acos a))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* [exit]simplify:  Simplified to (cbrt (/ 1 (- (acos a))))
* [exit]simplify:  Simplified to (cbrt (/ 1 (- (acos a))))
* * * * [misc]progress:  [ 49 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (/ (cbrt a) (cbrt (- (acos a))))))>
* [enter]simplify:  Simplifying (cbrt a)
* * [misc]simplify:  iters left: 1 (2 enodes)
* [exit]simplify:  Simplified to (cbrt a)
* [exit]simplify:  Simplified to (cbrt a)
* [enter]simplify:  Simplifying (cbrt (- (acos a)))
* * [misc]simplify:  iters left: 4 (4 enodes)
* [exit]simplify:  Simplified to (cbrt (- (acos a)))
* [exit]simplify:  Simplified to (cbrt (- (acos a)))
* * * * [misc]progress:  [ 50 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cube (cbrt (cbrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (cbrt (cbrt (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* [exit]simplify:  Simplified to (cbrt (cbrt (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (cbrt (cbrt (/ a (- (acos a)))))
* * * * [misc]progress:  [ 51 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (cbrt (cube (cbrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (cube (cbrt (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* * * * [misc]progress:  [ 52 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (sqr (sqrt (cbrt (/ a (- (acos a))))))))>
* [enter]simplify:  Simplifying (sqrt (cbrt (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* [exit]simplify:  Simplified to (sqrt (cbrt (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (sqrt (cbrt (/ a (- (acos a)))))
* * * * [misc]progress:  [ 53 / 53 ] simplifiying candidate #<alt-delta (λ (a) (cube (* 1 (cbrt (/ a (- (acos a)))))))>
* * * [misc]progress:  adding candidates to table
* [misc]progress:  [Phase 3 of 3] Extracting.
* * [misc]regime-changes:  Finding splitpoints for: (#<alt-delta (λ (a) (cube (/ (cbrt a) (cbrt (- (acos a))))))> #<alt-delta (λ (a) (cube (* (cbrt a) (cbrt (/ 1 (- (acos a)))))))> #<alt-delta (λ (a) (cube (sqr (sqrt (cbrt (/ a (- (acos a))))))))> #<alt-delta (λ (a) (cbrt (cube (/ a (- (acos a))))))> #<alt-event (λ (a) (/ a (- (acos a))))> #<alt-delta (λ (a) (cube (cbrt (/ a (- (acos a))))))> #<alt-delta (λ (a) (sqr (sqrt (/ a (- (acos a))))))> #<alt-delta (λ (a) (log1p (expm1 (/ a (- (acos a))))))> #<alt-delta (λ (a) (cube (cube (cbrt (cbrt (/ a (- (acos a))))))))>)
* [misc]regimes:  Found splitpoints: (#s(sp 0 a +inf.0)) , with alts (#<alt-event (λ (a) (/ a (- (acos a))))>)
* [enter]simplify:  Simplifying (cbrt a)
* * [misc]simplify:  iters left: 1 (2 enodes)
* [exit]simplify:  Simplified to (cbrt a)
* [exit]simplify:  Simplified to (cbrt a)
* [enter]simplify:  Simplifying (cbrt (- (acos a)))
* * [misc]simplify:  iters left: 4 (4 enodes)
* [exit]simplify:  Simplified to (cbrt (- (acos a)))
* [exit]simplify:  Simplified to (cbrt (- (acos a)))
* [enter]simplify:  Simplifying (cbrt a)
* * [misc]simplify:  iters left: 1 (2 enodes)
* [exit]simplify:  Simplified to (cbrt a)
* [exit]simplify:  Simplified to (cbrt a)
* [enter]simplify:  Simplifying (cbrt (/ 1 (- (acos a))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* [exit]simplify:  Simplified to (cbrt (/ 1 (- (acos a))))
* [exit]simplify:  Simplified to (cbrt (/ 1 (- (acos a))))
* [enter]simplify:  Simplifying (sqrt (cbrt (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* [exit]simplify:  Simplified to (sqrt (cbrt (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (sqrt (cbrt (/ a (- (acos a)))))
* [enter]simplify:  Simplifying (cube (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* * [misc]simplify:  iters left: 4 (22 enodes)
* * [misc]simplify:  iters left: 3 (36 enodes)
* * [misc]simplify:  iters left: 2 (64 enodes)
* * [misc]simplify:  iters left: 1 (113 enodes)
* [exit]simplify:  Simplified to (cube (/ a (- (acos a))))
* [exit]simplify:  Simplified to (cube (/ a (- (acos a))))
* [enter]simplify:  Simplifying (/ a (- (acos a)))
* * [misc]simplify:  iters left: 5 (4 enodes)
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* [enter]simplify:  Simplifying (cbrt (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* [enter]simplify:  Simplifying (sqrt (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [enter]simplify:  Simplifying (expm1 (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (expm1 (/ a (- (acos a))))
* [exit]simplify:  Simplified to (expm1 (/ a (- (acos a))))
* [enter]simplify:  Simplifying (cbrt (cbrt (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* [exit]simplify:  Simplified to (cbrt (cbrt (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (cbrt (cbrt (/ a (- (acos a)))))