* [misc]progress:  [Phase 1 of 3] Setting up.
* * * [misc]progress:  [1/2] Preparing points
* * * [misc]progress:  [2/2] Setting up program.
* [enter]simplify:  Simplifying (- (atan2 (atan2 a c) a) (log a))
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 a c) a) (log a))
* [misc]progress:  [Phase 2 of 3] Improving.
* * [misc]progress:  iteration 1 / 2
* * * [misc]progress:  picking best candidate
* * * * [misc]pick:  Picked  #<alt-event (λ (a b c d) (- (atan2 (atan2 a c) a) (log a)))>
* * * [misc]progress:  localizing error
* * * [misc]progress:  generating series expansions
* * * * [misc]progress:  [ 1 / 3 ] generating series at (2 1)
* [misc]approximate:  Taking taylor expansion of (atan2 (atan2 a c) a) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]approximate:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]approximate:  Taking taylor expansion of (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* * * * [misc]progress:  [ 2 / 3 ] generating series at (2 1 1)
* [misc]approximate:  Taking taylor expansion of (atan2 a c) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (atan2 a c) in c
* [misc]backup-simplify:  Simplify (atan2 a c) into (atan2 a c)
* [misc]taylor:  Taking taylor expansion of (atan2 a c) in a
* [misc]backup-simplify:  Simplify (atan2 a c) into (atan2 a c)
* [misc]taylor:  Taking taylor expansion of (atan2 a c) in a
* [misc]backup-simplify:  Simplify (atan2 a c) into (atan2 a c)
* [misc]taylor:  Taking taylor expansion of (atan2 a c) in c
* [misc]backup-simplify:  Simplify (atan2 a c) into (atan2 a c)
* [misc]backup-simplify:  Simplify (atan2 a c) into (atan2 a c)
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (atan2 a c) into (atan2 a c)
* [misc]approximate:  Taking taylor expansion of (atan2 (/ 1 a) (/ 1 c)) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (atan2 (/ 1 a) (/ 1 c)) in c
* [misc]backup-simplify:  Simplify (atan2 (/ 1 a) (/ 1 c)) into (atan2 (/ 1 a) (/ 1 c))
* [misc]taylor:  Taking taylor expansion of (atan2 (/ 1 a) (/ 1 c)) in a
* [misc]backup-simplify:  Simplify (atan2 (/ 1 a) (/ 1 c)) into (atan2 (/ 1 a) (/ 1 c))
* [misc]taylor:  Taking taylor expansion of (atan2 (/ 1 a) (/ 1 c)) in a
* [misc]backup-simplify:  Simplify (atan2 (/ 1 a) (/ 1 c)) into (atan2 (/ 1 a) (/ 1 c))
* [misc]taylor:  Taking taylor expansion of (atan2 (/ 1 a) (/ 1 c)) in c
* [misc]backup-simplify:  Simplify (atan2 (/ 1 a) (/ 1 c)) into (atan2 (/ 1 a) (/ 1 c))
* [misc]backup-simplify:  Simplify (atan2 (/ 1 a) (/ 1 c)) into (atan2 (/ 1 a) (/ 1 c))
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (atan2 (/ 1 a) (/ 1 c)) into (atan2 (/ 1 a) (/ 1 c))
* [misc]approximate:  Taking taylor expansion of (atan2 (/ 1 (- a)) (/ 1 (- c))) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (atan2 (/ 1 (- a)) (/ 1 (- c))) in c
* [misc]backup-simplify:  Simplify (atan2 (/ 1 (- a)) (/ 1 (- c))) into (atan2 (/ -1 a) (/ -1 c))
* [misc]taylor:  Taking taylor expansion of (atan2 (/ 1 (- a)) (/ 1 (- c))) in a
* [misc]backup-simplify:  Simplify (atan2 (/ 1 (- a)) (/ 1 (- c))) into (atan2 (/ -1 a) (/ -1 c))
* [misc]taylor:  Taking taylor expansion of (atan2 (/ 1 (- a)) (/ 1 (- c))) in a
* [misc]backup-simplify:  Simplify (atan2 (/ 1 (- a)) (/ 1 (- c))) into (atan2 (/ -1 a) (/ -1 c))
* [misc]taylor:  Taking taylor expansion of (atan2 (/ -1 a) (/ -1 c)) in c
* [misc]backup-simplify:  Simplify (atan2 (/ -1 a) (/ -1 c)) into (atan2 (/ -1 a) (/ -1 c))
* [misc]backup-simplify:  Simplify (atan2 (/ -1 a) (/ -1 c)) into (atan2 (/ -1 a) (/ -1 c))
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (atan2 (/ -1 a) (/ -1 c)) into (atan2 (/ -1 a) (/ -1 c))
* * * * [misc]progress:  [ 3 / 3 ] generating series at (2)
* [misc]approximate:  Taking taylor expansion of (- (atan2 (atan2 a c) a) (log a)) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (- (atan2 (atan2 a c) a) (log a)) in c
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]taylor:  Taking taylor expansion of (log a) in c
* [misc]taylor:  Taking taylor expansion of a in c
* [misc]backup-simplify:  Simplify a into a
* [misc]backup-simplify:  Simplify (log a) into (log a)
* [misc]taylor:  Taking taylor expansion of (- (atan2 (atan2 a c) a) (log a)) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]taylor:  Taking taylor expansion of (log 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 (log 1) into 0
* [misc]taylor:  Taking taylor expansion of (- (atan2 (atan2 a c) a) (log a)) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]taylor:  Taking taylor expansion of (log 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 (log 1) into 0
* [misc]backup-simplify:  Simplify (+ (* (- -1) (log a)) 0) into (log a)
* [misc]backup-simplify:  Simplify (- (log a)) into (- (log a))
* [misc]backup-simplify:  Simplify (+ (atan2 (atan2 a c) a) (- (log a))) into (- (atan2 (atan2 a c) a) (log a))
* [misc]taylor:  Taking taylor expansion of (- (atan2 (atan2 a c) a) (log a)) in c
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]taylor:  Taking taylor expansion of (log a) in c
* [misc]taylor:  Taking taylor expansion of a in c
* [misc]backup-simplify:  Simplify a into a
* [misc]backup-simplify:  Simplify (log a) into (log a)
* [misc]backup-simplify:  Simplify (- (log a)) into (- (log a))
* [misc]backup-simplify:  Simplify (+ (atan2 (atan2 a c) a) (- (log a))) into (- (atan2 (atan2 a c) a) (log a))
* [misc]backup-simplify:  Simplify (- (atan2 (atan2 a c) a) (log a)) into (- (atan2 (atan2 a c) a) (log a))
* [misc]backup-simplify:  Simplify (/ (+ (* 1 (/ (* (pow (* 1 0) 1)) (pow 1 1)))) 1) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (/ (+ (* 1 (/ (* (pow (* 1 0) 1)) (pow a 1)))) 1) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (/ (+ (* -1 (/ (* (pow (* 1 0) 2)) (pow 1 2))) (* 1 (/ (* 1 (pow (* 2 0) 1)) (pow 1 1)))) 2) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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 (/ (* (pow (* 1 0) 2)) (pow a 2))) (* 1 (/ (* 1 (pow (* 2 0) 1)) (pow a 1)))) 2) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (/ (+ (* 2 (/ (* (pow (* 1 0) 3)) (pow 1 3))) (* -3 (/ (* (pow (* 1 0) 1) (pow (* 2 0) 1)) (pow 1 2))) (* 1 (/ (* 1 1 (pow (* 6 0) 1)) (pow 1 1)))) 6) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (atan2 (atan2 a c) a) (log a)) into (- (atan2 (atan2 a c) a) (log a))
* [misc]approximate:  Taking taylor expansion of (- (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) (log (/ 1 a))) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (- (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) (log (/ 1 a))) in c
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]taylor:  Taking taylor expansion of (log (/ 1 a)) in c
* [misc]taylor:  Taking taylor expansion of (/ 1 a) in c
* [misc]taylor:  Taking taylor expansion of a in c
* [misc]backup-simplify:  Simplify a into a
* [misc]backup-simplify:  Simplify (/ 1 a) into (/ 1 a)
* [misc]backup-simplify:  Simplify (log (/ 1 a)) into (log (/ 1 a))
* [misc]taylor:  Taking taylor expansion of (- (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) (log (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]taylor:  Taking taylor expansion of (log (/ 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]backup-simplify:  Simplify (log 1) into 0
* [misc]taylor:  Taking taylor expansion of (- (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) (log (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]taylor:  Taking taylor expansion of (log (/ 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]backup-simplify:  Simplify (log 1) into 0
* [misc]backup-simplify:  Simplify (+ (* (- 1) (log a)) 0) into (- (log a))
* [misc]backup-simplify:  Simplify (- (- (log a))) into (log a)
* [misc]backup-simplify:  Simplify (+ (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) (log a)) into (+ (log a) (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (+ (log a) (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) in c
* [misc]taylor:  Taking taylor expansion of (log a) in c
* [misc]taylor:  Taking taylor expansion of a in c
* [misc]backup-simplify:  Simplify a into a
* [misc]backup-simplify:  Simplify (log a) into (log a)
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]backup-simplify:  Simplify (+ (log a) (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) into (+ (log a) (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)))
* [misc]backup-simplify:  Simplify (+ (log a) (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) into (+ (log a) (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (/ (+ (* 1 (/ (* (pow (* 1 0) 1)) (pow 1 1)))) 1) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (/ (+ (* 1 (/ (* (pow (* 1 0) 1)) (pow a 1)))) 1) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (/ (+ (* -1 (/ (* (pow (* 1 0) 2)) (pow 1 2))) (* 1 (/ (* 1 (pow (* 2 0) 1)) (pow 1 1)))) 2) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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 (/ (* (pow (* 1 0) 2)) (pow a 2))) (* 1 (/ (* 1 (pow (* 2 0) 1)) (pow a 1)))) 2) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (/ (+ (* 2 (/ (* (pow (* 1 0) 3)) (pow 1 3))) (* -3 (/ (* (pow (* 1 0) 1) (pow (* 2 0) 1)) (pow 1 2))) (* 1 (/ (* 1 1 (pow (* 6 0) 1)) (pow 1 1)))) 6) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (+ (log a) (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) into (+ (log a) (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)))
* [misc]approximate:  Taking taylor expansion of (- (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) (log (/ 1 (- a)))) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (- (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) (log (/ 1 (- a)))) in c
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]taylor:  Taking taylor expansion of (log (/ 1 (- a))) in c
* [misc]taylor:  Taking taylor expansion of (/ 1 (- a)) in c
* [misc]taylor:  Taking taylor expansion of (- a) in c
* [misc]taylor:  Taking taylor expansion of a in c
* [misc]backup-simplify:  Simplify a into a
* [misc]backup-simplify:  Simplify (- a) into (- a)
* [misc]backup-simplify:  Simplify (- a) into (- a)
* [misc]backup-simplify:  Simplify (/ 1 (- a)) into (/ -1 a)
* [misc]backup-simplify:  Simplify (log (/ -1 a)) into (log (/ -1 a))
* [misc]taylor:  Taking taylor expansion of (- (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) (log (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]taylor:  Taking taylor expansion of (log (/ 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]backup-simplify:  Simplify (log -1) into (log -1)
* [misc]taylor:  Taking taylor expansion of (- (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) (log (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]taylor:  Taking taylor expansion of (log (/ 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]backup-simplify:  Simplify (log -1) into (log -1)
* [misc]backup-simplify:  Simplify (+ (* (- 1) (log a)) (log -1)) into (- (log -1) (log a))
* [misc]backup-simplify:  Simplify (- (- (log -1) (log a))) into (- (log a) (log -1))
* [misc]backup-simplify:  Simplify (+ (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) (- (log a) (log -1))) into (- (+ (log a) (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (log -1))
* [misc]taylor:  Taking taylor expansion of (- (+ (log a) (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (log -1)) in c
* [misc]taylor:  Taking taylor expansion of (+ (log a) (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) in c
* [misc]taylor:  Taking taylor expansion of (log a) in c
* [misc]taylor:  Taking taylor expansion of a in c
* [misc]backup-simplify:  Simplify a into a
* [misc]backup-simplify:  Simplify (log a) into (log a)
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]taylor:  Taking taylor expansion of (log -1) in c
* [misc]taylor:  Taking taylor expansion of -1 in c
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]backup-simplify:  Simplify (log -1) into (log -1)
* [misc]backup-simplify:  Simplify (+ (log a) (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) into (+ (log a) (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (log -1)) into (- (log -1))
* [misc]backup-simplify:  Simplify (+ (+ (log a) (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (- (log -1))) into (- (+ (log a) (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (log -1))
* [misc]backup-simplify:  Simplify (- (+ (log a) (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (log -1)) into (- (+ (log a) (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (log -1))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (/ (+ (* 1 (/ (* (pow (* 1 0) 1)) (pow -1 1)))) 1) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (/ (+ (* 1 (/ (* (pow (* 1 0) 1)) (pow a 1)))) 1) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (/ (+ (* 1 (/ (* (pow (* 1 0) 1)) (pow -1 1)))) 1) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (/ (+ (* -1 (/ (* (pow (* 1 0) 2)) (pow -1 2))) (* 1 (/ (* 1 (pow (* 2 0) 1)) (pow -1 1)))) 2) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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 (/ (* (pow (* 1 0) 2)) (pow a 2))) (* 1 (/ (* 1 (pow (* 2 0) 1)) (pow a 1)))) 2) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify (/ (+ (* -1 (/ (* (pow (* 1 0) 2)) (pow -1 2))) (* 1 (/ (* 1 (pow (* 2 0) 1)) (pow -1 1)))) 2) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]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 (/ (+ (* 2 (/ (* (pow (* 1 0) 3)) (pow -1 3))) (* -3 (/ (* (pow (* 1 0) 1) (pow (* 2 0) 1)) (pow -1 2))) (* 1 (/ (* 1 1 (pow (* 6 0) 1)) (pow -1 1)))) 6) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ 0 0) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (log a) (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (log -1)) into (- (+ (log a) (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (log -1))
* * * [misc]progress:  generating rewritten candidates
* * * * [misc]progress:  [ 1 / 3 ] rewriting at (2 1)
* * * * [misc]progress:  [ 2 / 3 ] rewriting at (2 1 1)
* * * * [misc]progress:  [ 3 / 3 ] rewriting at (2)
* * * [misc]progress:  simplifying candidates
* * * * [misc]progress:  [ 1 / 36 ] simplifiying candidate #<alt-event (λ (a b c d) (- (atan2 (atan2 a c) a) (log a)))>
* [enter]simplify:  Simplifying (- (atan2 (atan2 a c) a) (log a))
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 a c) a) (log a))
* * * * [misc]progress:  [ 2 / 36 ] simplifiying candidate #<alt-event (λ (a b c d) (- (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) (log a)))>
* [enter]simplify:  Simplifying (- (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) (log a))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) (log a))
* * * * [misc]progress:  [ 3 / 36 ] simplifiying candidate #<alt-event (λ (a b c d) (- (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) (log a)))>
* [enter]simplify:  Simplifying (- (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) (log a))
* * [misc]simplify:  iters left: 6 (9 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) (log a))
* * * * [misc]progress:  [ 4 / 36 ] simplifiying candidate #<alt-event (λ (a b c d) (- (atan2 (atan2 a c) a) (log a)))>
* [enter]simplify:  Simplifying (- (atan2 (atan2 a c) a) (log a))
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 a c) a) (log a))
* * * * [misc]progress:  [ 5 / 36 ] simplifiying candidate #<alt-event (λ (a b c d) (- (atan2 (atan2 (/ 1 a) (/ 1 c)) a) (log a)))>
* [enter]simplify:  Simplifying (- (atan2 (atan2 (/ 1 a) (/ 1 c)) a) (log a))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 (/ 1 a) (/ 1 c)) a) (log a))
* * * * [misc]progress:  [ 6 / 36 ] simplifiying candidate #<alt-event (λ (a b c d) (- (atan2 (atan2 (/ -1 a) (/ -1 c)) a) (log a)))>
* [enter]simplify:  Simplifying (- (atan2 (atan2 (/ -1 a) (/ -1 c)) a) (log a))
* * [misc]simplify:  iters left: 6 (9 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 (/ -1 a) (/ -1 c)) a) (log a))
* * * * [misc]progress:  [ 7 / 36 ] simplifiying candidate #<alt-event (λ (a b c d) (- (atan2 (atan2 a c) a) (log a)))>
* [enter]simplify:  Simplifying (- (atan2 (atan2 a c) a) (log a))
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 a c) a) (log a))
* * * * [misc]progress:  [ 8 / 36 ] simplifiying candidate #<alt-event (λ (a b c d) (+ (log a) (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))))>
* [enter]simplify:  Simplifying (+ (log a) (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* [exit]simplify:  Simplified to (+ (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) (log a))
* * * * [misc]progress:  [ 9 / 36 ] simplifiying candidate #<alt-event (λ (a b c d) (- (+ (log a) (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (log -1)))>
* [enter]simplify:  Simplifying (- (+ (log a) (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (log -1))
* * [misc]simplify:  iters left: 6 (11 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* * [misc]simplify:  iters left: 4 (15 enodes)
* * [misc]simplify:  iters left: 3 (19 enodes)
* * [misc]simplify:  iters left: 2 (20 enodes)
* * [misc]simplify:  iters left: 1 (22 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) (- (log -1) (log a)))
* * * * [misc]progress:  [ 10 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (- (pow (atan2 (atan2 a c) a) 1) (log a)))>
* * * * [misc]progress:  [ 11 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (- (exp (log (atan2 (atan2 a c) a))) (log a)))>
* [enter]simplify:  Simplifying (log (atan2 (atan2 a c) a))
* * [misc]simplify:  iters left: 3 (5 enodes)
* [exit]simplify:  Simplified to (log (atan2 (atan2 a c) a))
* [exit]simplify:  Simplified to (log (atan2 (atan2 a c) a))
* * * * [misc]progress:  [ 12 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (- (log (exp (atan2 (atan2 a c) a))) (log a)))>
* [enter]simplify:  Simplifying (exp (atan2 (atan2 a c) a))
* * [misc]simplify:  iters left: 3 (5 enodes)
* [exit]simplify:  Simplified to (exp (atan2 (atan2 a c) a))
* [exit]simplify:  Simplified to (exp (atan2 (atan2 a c) a))
* * * * [misc]progress:  [ 13 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (- (cube (cbrt (atan2 (atan2 a c) a))) (log a)))>
* [enter]simplify:  Simplifying (cbrt (atan2 (atan2 a c) a))
* * [misc]simplify:  iters left: 3 (5 enodes)
* [exit]simplify:  Simplified to (cbrt (atan2 (atan2 a c) a))
* [exit]simplify:  Simplified to (cbrt (atan2 (atan2 a c) a))
* * * * [misc]progress:  [ 14 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (- (cbrt (cube (atan2 (atan2 a c) a))) (log a)))>
* [enter]simplify:  Simplifying (cube (atan2 (atan2 a c) a))
* * [misc]simplify:  iters left: 3 (5 enodes)
* * [misc]simplify:  iters left: 2 (7 enodes)
* * [misc]simplify:  iters left: 1 (9 enodes)
* [exit]simplify:  Simplified to (cube (atan2 (atan2 a c) a))
* [exit]simplify:  Simplified to (cube (atan2 (atan2 a c) a))
* * * * [misc]progress:  [ 15 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (- (sqr (sqrt (atan2 (atan2 a c) a))) (log a)))>
* [enter]simplify:  Simplifying (sqrt (atan2 (atan2 a c) a))
* * [misc]simplify:  iters left: 3 (5 enodes)
* [exit]simplify:  Simplified to (sqrt (atan2 (atan2 a c) a))
* [exit]simplify:  Simplified to (sqrt (atan2 (atan2 a c) a))
* * * * [misc]progress:  [ 16 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (- (* 1 (atan2 (atan2 a c) a)) (log a)))>
* * * * [misc]progress:  [ 17 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (- (atan2 (pow (atan2 a c) 1) a) (log a)))>
* * * * [misc]progress:  [ 18 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (- (atan2 (exp (log (atan2 a c))) a) (log a)))>
* [enter]simplify:  Simplifying (log (atan2 a c))
* * [misc]simplify:  iters left: 2 (4 enodes)
* [exit]simplify:  Simplified to (log (atan2 a c))
* [exit]simplify:  Simplified to (log (atan2 a c))
* * * * [misc]progress:  [ 19 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (- (atan2 (log (exp (atan2 a c))) a) (log a)))>
* [enter]simplify:  Simplifying (exp (atan2 a c))
* * [misc]simplify:  iters left: 2 (4 enodes)
* [exit]simplify:  Simplified to (exp (atan2 a c))
* [exit]simplify:  Simplified to (exp (atan2 a c))
* * * * [misc]progress:  [ 20 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (- (atan2 (cube (cbrt (atan2 a c))) a) (log a)))>
* [enter]simplify:  Simplifying (cbrt (atan2 a c))
* * [misc]simplify:  iters left: 2 (4 enodes)
* [exit]simplify:  Simplified to (cbrt (atan2 a c))
* [exit]simplify:  Simplified to (cbrt (atan2 a c))
* * * * [misc]progress:  [ 21 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (- (atan2 (cbrt (cube (atan2 a c))) a) (log a)))>
* [enter]simplify:  Simplifying (cube (atan2 a c))
* * [misc]simplify:  iters left: 2 (4 enodes)
* * [misc]simplify:  iters left: 1 (6 enodes)
* [exit]simplify:  Simplified to (cube (atan2 a c))
* [exit]simplify:  Simplified to (cube (atan2 a c))
* * * * [misc]progress:  [ 22 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (- (atan2 (sqr (sqrt (atan2 a c))) a) (log a)))>
* [enter]simplify:  Simplifying (sqrt (atan2 a c))
* * [misc]simplify:  iters left: 2 (4 enodes)
* [exit]simplify:  Simplified to (sqrt (atan2 a c))
* [exit]simplify:  Simplified to (sqrt (atan2 a c))
* * * * [misc]progress:  [ 23 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (- (atan2 (* 1 (atan2 a c)) a) (log a)))>
* * * * [misc]progress:  [ 24 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (exp (atan2 (atan2 a c) a)) a)))>
* [enter]simplify:  Simplifying (/ (exp (atan2 (atan2 a c) a)) a)
* * [misc]simplify:  iters left: 5 (6 enodes)
* [exit]simplify:  Simplified to (/ (exp (atan2 (atan2 a c) a)) a)
* [exit]simplify:  Simplified to (/ (exp (atan2 (atan2 a c) a)) a)
* * * * [misc]progress:  [ 25 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (pow (- (atan2 (atan2 a c) a) (log a)) 1))>
* * * * [misc]progress:  [ 26 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (exp (log (- (atan2 (atan2 a c) a) (log a)))))>
* [enter]simplify:  Simplifying (log (- (atan2 (atan2 a c) a) (log a)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* [exit]simplify:  Simplified to (log (- (atan2 (atan2 a c) a) (log a)))
* [exit]simplify:  Simplified to (log (- (atan2 (atan2 a c) a) (log a)))
* * * * [misc]progress:  [ 27 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (exp (- (atan2 (atan2 a c) a) (log a)))))>
* [enter]simplify:  Simplifying (exp (- (atan2 (atan2 a c) a) (log a)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* [exit]simplify:  Simplified to (/ (exp (atan2 (atan2 a c) a)) a)
* [exit]simplify:  Simplified to (/ (exp (atan2 (atan2 a c) a)) a)
* * * * [misc]progress:  [ 28 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (cube (cbrt (- (atan2 (atan2 a c) a) (log a)))))>
* [enter]simplify:  Simplifying (cbrt (- (atan2 (atan2 a c) a) (log a)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* [exit]simplify:  Simplified to (cbrt (- (atan2 (atan2 a c) a) (log a)))
* [exit]simplify:  Simplified to (cbrt (- (atan2 (atan2 a c) a) (log a)))
* * * * [misc]progress:  [ 29 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (cbrt (cube (- (atan2 (atan2 a c) a) (log a)))))>
* [enter]simplify:  Simplifying (cube (- (atan2 (atan2 a c) a) (log a)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* * [misc]simplify:  iters left: 3 (11 enodes)
* [exit]simplify:  Simplified to (cube (- (atan2 (atan2 a c) a) (log a)))
* [exit]simplify:  Simplified to (cube (- (atan2 (atan2 a c) a) (log a)))
* * * * [misc]progress:  [ 30 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (sqr (sqrt (- (atan2 (atan2 a c) a) (log a)))))>
* [enter]simplify:  Simplifying (sqrt (- (atan2 (atan2 a c) a) (log a)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* [exit]simplify:  Simplified to (sqrt (- (atan2 (atan2 a c) a) (log a)))
* [exit]simplify:  Simplified to (sqrt (- (atan2 (atan2 a c) a) (log a)))
* * * * [misc]progress:  [ 31 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (+ (atan2 (atan2 a c) a) (- (log a))))>
* [enter]simplify:  Simplifying (- (log a))
* * [misc]simplify:  iters left: 3 (3 enodes)
* [exit]simplify:  Simplified to (- (log a))
* [exit]simplify:  Simplified to (- (log a))
* * * * [misc]progress:  [ 32 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (* 1 (- (atan2 (atan2 a c) a) (log a))))>
* * * * [misc]progress:  [ 33 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (/ (- (pow (atan2 (atan2 a c) a) 3) (pow (log a) 3)) (+ (sqr (atan2 (atan2 a c) a)) (+ (sqr (log a)) (* (atan2 (atan2 a c) a) (log a))))))>
* [enter]simplify:  Simplifying (- (pow (atan2 (atan2 a c) a) 3) (pow (log a) 3))
* * [misc]simplify:  iters left: 5 (9 enodes)
* * [misc]simplify:  iters left: 4 (11 enodes)
* * [misc]simplify:  iters left: 3 (15 enodes)
* * [misc]simplify:  iters left: 2 (19 enodes)
* [exit]simplify:  Simplified to (- (cube (atan2 (atan2 a c) a)) (cube (log a)))
* [exit]simplify:  Simplified to (- (cube (atan2 (atan2 a c) a)) (cube (log a)))
* [enter]simplify:  Simplifying (+ (sqr (atan2 (atan2 a c) a)) (+ (sqr (log a)) (* (atan2 (atan2 a c) a) (log a))))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (16 enodes)
* * [misc]simplify:  iters left: 4 (23 enodes)
* * [misc]simplify:  iters left: 3 (27 enodes)
* * [misc]simplify:  iters left: 2 (29 enodes)
* * [misc]simplify:  iters left: 1 (31 enodes)
* [exit]simplify:  Simplified to (+ (* (log a) (log a)) (* (atan2 (atan2 a c) a) (+ (log a) (atan2 (atan2 a c) a))))
* [exit]simplify:  Simplified to (+ (* (log a) (log a)) (* (atan2 (atan2 a c) a) (+ (log a) (atan2 (atan2 a c) a))))
* * * * [misc]progress:  [ 34 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (/ (- (sqr (atan2 (atan2 a c) a)) (sqr (log a))) (+ (atan2 (atan2 a c) a) (log a))))>
* [enter]simplify:  Simplifying (- (sqr (atan2 (atan2 a c) a)) (sqr (log a)))
* * [misc]simplify:  iters left: 5 (8 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* * [misc]simplify:  iters left: 3 (15 enodes)
* * [misc]simplify:  iters left: 2 (23 enodes)
* [exit]simplify:  Simplified to (- (* (atan2 (atan2 a c) a) (atan2 (atan2 a c) a)) (* (log a) (log a)))
* [exit]simplify:  Simplified to (- (* (atan2 (atan2 a c) a) (atan2 (atan2 a c) a)) (* (log a) (log a)))
* [enter]simplify:  Simplifying (+ (atan2 (atan2 a c) a) (log a))
* * [misc]simplify:  iters left: 4 (6 enodes)
* * [misc]simplify:  iters left: 3 (7 enodes)
* [exit]simplify:  Simplified to (+ (log a) (atan2 (atan2 a c) a))
* [exit]simplify:  Simplified to (+ (log a) (atan2 (atan2 a c) a))
* * * * [misc]progress:  [ 35 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (* (+ (sqrt (atan2 (atan2 a c) a)) (sqrt (log a))) (- (sqrt (atan2 (atan2 a c) a)) (sqrt (log a)))))>
* [enter]simplify:  Simplifying (+ (sqrt (atan2 (atan2 a c) a)) (sqrt (log a)))
* * [misc]simplify:  iters left: 5 (8 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* [exit]simplify:  Simplified to (+ (sqrt (atan2 (atan2 a c) a)) (sqrt (log a)))
* [exit]simplify:  Simplified to (+ (sqrt (atan2 (atan2 a c) a)) (sqrt (log a)))
* [enter]simplify:  Simplifying (- (sqrt (atan2 (atan2 a c) a)) (sqrt (log a)))
* * [misc]simplify:  iters left: 5 (8 enodes)
* [exit]simplify:  Simplified to (- (sqrt (atan2 (atan2 a c) a)) (sqrt (log a)))
* [exit]simplify:  Simplified to (- (sqrt (atan2 (atan2 a c) a)) (sqrt (log a)))
* * * * [misc]progress:  [ 36 / 36 ] simplifiying candidate #<alt-delta (λ (a b c d) (* 1 (- (atan2 (atan2 a c) a) (log a))))>
* [enter]simplify:  Simplifying (- (atan2 (atan2 a c) a) (log a))
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 a c) a) (log a))
* [exit]simplify:  Simplified to (- (atan2 (atan2 a c) a) (log a))
* * * [misc]progress:  adding candidates to table
* * [misc]progress:  iteration 2 / 2
* * * [misc]progress:  picking best candidate
* * * * [misc]pick:  Picked  #<alt-delta (λ (a b c d) (log (/ (exp (atan2 (atan2 a c) a)) a)))>
* * * [misc]progress:  localizing error
* * * [misc]progress:  generating series expansions
* * * * [misc]progress:  [ 1 / 4 ] generating series at (2 1 1 1)
* [misc]approximate:  Taking taylor expansion of (atan2 (atan2 a c) a) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]approximate:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]approximate:  Taking taylor expansion of (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* * * * [misc]progress:  [ 2 / 4 ] generating series at (2 1 1)
* [misc]approximate:  Taking taylor expansion of (exp (atan2 (atan2 a c) a)) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 a c) a)) in c
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 a c) a)) into (exp (atan2 (atan2 a c) a))
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 a c) a)) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 a c) a)) into (exp (atan2 (atan2 a c) a))
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 a c) a)) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 a c) a)) into (exp (atan2 (atan2 a c) a))
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 a c) a)) in c
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 a c) a)) into (exp (atan2 (atan2 a c) a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 a c) a)) into (exp (atan2 (atan2 a c) a))
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 a c) a)) (+ (* (/ (pow 0 1) 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 a c) a)) (+ (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 a c) a)) (+ (* (/ (pow 0 2) 2)) (* (/ (pow 0 1) 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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 (* (exp (atan2 (atan2 a c) a)) (+ (* (/ (pow 0 2) 2)) (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 a c) a)) (+ (* (/ (pow 0 3) 6)) (* (/ (pow 0 1) 1) (/ (pow 0 1) 1)) (* (/ (pow 0 1) 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 a c) a)) into (exp (atan2 (atan2 a c) a))
* [misc]approximate:  Taking taylor expansion of (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) in c
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) into (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) into (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) into (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) in c
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) into (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) into (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)))
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (+ (* (/ (pow 0 1) 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (+ (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (+ (* (/ (pow 0 2) 2)) (* (/ (pow 0 1) 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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 (* (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (+ (* (/ (pow 0 2) 2)) (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (+ (* (/ (pow 0 3) 6)) (* (/ (pow 0 1) 1) (/ (pow 0 1) 1)) (* (/ (pow 0 1) 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) into (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)))
* [misc]approximate:  Taking taylor expansion of (exp (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a)))) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a)))) in c
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) into (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)))
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) into (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)))
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) into (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)))
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) in c
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) into (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) into (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)))
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (+ (* (/ (pow 0 1) 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (+ (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (+ (* (/ (pow 0 2) 2)) (* (/ (pow 0 1) 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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 (* (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (+ (* (/ (pow 0 2) 2)) (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (+ (* (/ (pow 0 3) 6)) (* (/ (pow 0 1) 1) (/ (pow 0 1) 1)) (* (/ (pow 0 1) 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) into (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)))
* * * * [misc]progress:  [ 3 / 4 ] generating series at (2 1 1 1 1)
* [misc]approximate:  Taking taylor expansion of (atan2 a c) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (atan2 a c) in c
* [misc]backup-simplify:  Simplify (atan2 a c) into (atan2 a c)
* [misc]taylor:  Taking taylor expansion of (atan2 a c) in a
* [misc]backup-simplify:  Simplify (atan2 a c) into (atan2 a c)
* [misc]taylor:  Taking taylor expansion of (atan2 a c) in a
* [misc]backup-simplify:  Simplify (atan2 a c) into (atan2 a c)
* [misc]taylor:  Taking taylor expansion of (atan2 a c) in c
* [misc]backup-simplify:  Simplify (atan2 a c) into (atan2 a c)
* [misc]backup-simplify:  Simplify (atan2 a c) into (atan2 a c)
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (atan2 a c) into (atan2 a c)
* [misc]approximate:  Taking taylor expansion of (atan2 (/ 1 a) (/ 1 c)) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (atan2 (/ 1 a) (/ 1 c)) in c
* [misc]backup-simplify:  Simplify (atan2 (/ 1 a) (/ 1 c)) into (atan2 (/ 1 a) (/ 1 c))
* [misc]taylor:  Taking taylor expansion of (atan2 (/ 1 a) (/ 1 c)) in a
* [misc]backup-simplify:  Simplify (atan2 (/ 1 a) (/ 1 c)) into (atan2 (/ 1 a) (/ 1 c))
* [misc]taylor:  Taking taylor expansion of (atan2 (/ 1 a) (/ 1 c)) in a
* [misc]backup-simplify:  Simplify (atan2 (/ 1 a) (/ 1 c)) into (atan2 (/ 1 a) (/ 1 c))
* [misc]taylor:  Taking taylor expansion of (atan2 (/ 1 a) (/ 1 c)) in c
* [misc]backup-simplify:  Simplify (atan2 (/ 1 a) (/ 1 c)) into (atan2 (/ 1 a) (/ 1 c))
* [misc]backup-simplify:  Simplify (atan2 (/ 1 a) (/ 1 c)) into (atan2 (/ 1 a) (/ 1 c))
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (atan2 (/ 1 a) (/ 1 c)) into (atan2 (/ 1 a) (/ 1 c))
* [misc]approximate:  Taking taylor expansion of (atan2 (/ 1 (- a)) (/ 1 (- c))) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (atan2 (/ 1 (- a)) (/ 1 (- c))) in c
* [misc]backup-simplify:  Simplify (atan2 (/ 1 (- a)) (/ 1 (- c))) into (atan2 (/ -1 a) (/ -1 c))
* [misc]taylor:  Taking taylor expansion of (atan2 (/ 1 (- a)) (/ 1 (- c))) in a
* [misc]backup-simplify:  Simplify (atan2 (/ 1 (- a)) (/ 1 (- c))) into (atan2 (/ -1 a) (/ -1 c))
* [misc]taylor:  Taking taylor expansion of (atan2 (/ 1 (- a)) (/ 1 (- c))) in a
* [misc]backup-simplify:  Simplify (atan2 (/ 1 (- a)) (/ 1 (- c))) into (atan2 (/ -1 a) (/ -1 c))
* [misc]taylor:  Taking taylor expansion of (atan2 (/ -1 a) (/ -1 c)) in c
* [misc]backup-simplify:  Simplify (atan2 (/ -1 a) (/ -1 c)) into (atan2 (/ -1 a) (/ -1 c))
* [misc]backup-simplify:  Simplify (atan2 (/ -1 a) (/ -1 c)) into (atan2 (/ -1 a) (/ -1 c))
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (atan2 (/ -1 a) (/ -1 c)) into (atan2 (/ -1 a) (/ -1 c))
* * * * [misc]progress:  [ 4 / 4 ] generating series at (2 1)
* [misc]approximate:  Taking taylor expansion of (/ (exp (atan2 (atan2 a c) a)) a) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (/ (exp (atan2 (atan2 a c) a)) a) in c
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 a c) a)) in c
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 a c) a)) into (exp (atan2 (atan2 a c) a))
* [misc]taylor:  Taking taylor expansion of a in c
* [misc]backup-simplify:  Simplify a into a
* [misc]backup-simplify:  Simplify (/ (exp (atan2 (atan2 a c) a)) a) into (/ (exp (atan2 (atan2 a c) a)) a)
* [misc]taylor:  Taking taylor expansion of (/ (exp (atan2 (atan2 a c) a)) a) in a
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 a c) a)) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 a c) a)) into (exp (atan2 (atan2 a c) 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 (/ (exp (atan2 (atan2 a c) a)) 1) into (exp (atan2 (atan2 a c) a))
* [misc]taylor:  Taking taylor expansion of (/ (exp (atan2 (atan2 a c) a)) a) in a
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 a c) a)) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 a c) a)) into (exp (atan2 (atan2 a c) 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 (/ (exp (atan2 (atan2 a c) a)) 1) into (exp (atan2 (atan2 a c) a))
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 a c) a)) in c
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 a c) a) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 a c) a) into (atan2 (atan2 a c) a)
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 a c) a)) into (exp (atan2 (atan2 a c) a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 a c) a)) into (exp (atan2 (atan2 a c) a))
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 a c) a)) (+ (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (exp (atan2 (atan2 a c) a)) (/ 0 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 a c) a)) (+ (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 a c) a)) (+ (* (/ (pow 0 2) 2)) (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (exp (atan2 (atan2 a c) a)) (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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 (* (exp (atan2 (atan2 a c) a)) (+ (* (/ (pow 0 2) 2)) (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 a c) a)) (+ (* (/ (pow 0 3) 6)) (* (/ (pow 0 1) 1) (/ (pow 0 1) 1)) (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (exp (atan2 (atan2 a c) a)) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 a c) a)) (* 1 (/ 1 a))) into (/ (exp (atan2 (atan2 a c) a)) a)
* [misc]approximate:  Taking taylor expansion of (/ (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (/ 1 a)) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (/ (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (/ 1 a)) in c
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) in c
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) into (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (/ 1 a) in c
* [misc]taylor:  Taking taylor expansion of a in c
* [misc]backup-simplify:  Simplify a into a
* [misc]backup-simplify:  Simplify (/ 1 a) into (/ 1 a)
* [misc]backup-simplify:  Simplify (/ (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (/ 1 a)) into (* (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) a)
* [misc]taylor:  Taking taylor expansion of (/ (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (/ 1 a)) in a
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) into (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 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]backup-simplify:  Simplify (/ (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) 1) into (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (/ (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (/ 1 a)) in a
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) into (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 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]backup-simplify:  Simplify (/ (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) 1) into (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) in c
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) into (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) into (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) into (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)))
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (+ (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (/ 0 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (+ (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (+ (* (/ (pow 0 2) 2)) (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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 (* (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (+ (* (/ (pow 0 2) 2)) (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (+ (* (/ (pow 0 3) 6)) (* (/ (pow 0 1) 1) (/ (pow 0 1) 1)) (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) (* 1 (/ 1 a))) into (/ (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) a)
* [misc]approximate:  Taking taylor expansion of (/ (exp (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a)))) (/ 1 (- a))) in (a c) around 0
* [misc]taylor:  Taking taylor expansion of (/ (exp (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a)))) (/ 1 (- a))) in c
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a)))) in c
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) into (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)))
* [misc]taylor:  Taking taylor expansion of (/ 1 (- a)) in c
* [misc]taylor:  Taking taylor expansion of (- a) in c
* [misc]taylor:  Taking taylor expansion of a in c
* [misc]backup-simplify:  Simplify a into a
* [misc]backup-simplify:  Simplify (- a) into (- a)
* [misc]backup-simplify:  Simplify (- a) into (- a)
* [misc]backup-simplify:  Simplify (/ 1 (- a)) into (/ -1 a)
* [misc]backup-simplify:  Simplify (/ (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (/ -1 a)) into (* -1 (* (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) a))
* [misc]taylor:  Taking taylor expansion of (/ (exp (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a)))) (/ 1 (- a))) in a
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) into (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 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]backup-simplify:  Simplify (/ (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) -1) into (* -1 (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))))
* [misc]taylor:  Taking taylor expansion of (/ (exp (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a)))) (/ 1 (- a))) in a
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ 1 (- a)) (/ 1 (- c))) (/ 1 (- a))) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) into (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 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]backup-simplify:  Simplify (/ (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) -1) into (* -1 (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))))
* [misc]taylor:  Taking taylor expansion of (* -1 (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)))) in c
* [misc]taylor:  Taking taylor expansion of -1 in c
* [misc]backup-simplify:  Simplify -1 into -1
* [misc]taylor:  Taking taylor expansion of (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) in c
* [misc]taylor:  Taking taylor expansion of (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) in c
* [misc]backup-simplify:  Simplify (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) into (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))
* [misc]backup-simplify:  Simplify (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) into (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)))
* [misc]backup-simplify:  Simplify (* -1 (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)))) into (* -1 (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))))
* [misc]backup-simplify:  Simplify (* -1 (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)))) into (* -1 (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))))
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (+ (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 -1) (+ (* (* -1 (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)))) (/ 0 -1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (+ (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (* 0 (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (+ (* (/ (pow 0 2) 2)) (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 -1) (+ (* (* -1 (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)))) (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [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 (* (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (+ (* (/ (pow 0 2) 2)) (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify (+ (* -1 0) (+ (* 0 0) (* 0 (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) (+ (* (/ (pow 0 3) 6)) (* (/ (pow 0 1) 1) (/ (pow 0 1) 1)) (* (/ (pow 0 1) 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 -1) (+ (* (* -1 (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)))) (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]taylor:  Taking taylor expansion of 0 in c
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (* -1 (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)))) (* 1 (/ 1 (- a)))) into (/ (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) a)
* * * [misc]progress:  generating rewritten candidates
* * * * [misc]progress:  [ 1 / 4 ] rewriting at (2 1 1 1)
* * * * [misc]progress:  [ 2 / 4 ] rewriting at (2 1 1)
* * * * [misc]progress:  [ 3 / 4 ] rewriting at (2 1 1 1 1)
* * * * [misc]progress:  [ 4 / 4 ] rewriting at (2 1)
* * * [misc]progress:  simplifying candidates
* * * * [misc]progress:  [ 1 / 45 ] simplifiying candidate #<alt-event (λ (a b c d) (log (/ (exp (atan2 (atan2 a c) a)) a)))>
* [enter]simplify:  Simplifying (log (/ (exp (atan2 (atan2 a c) a)) a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 a c) a) (log a))
* * * * [misc]progress:  [ 2 / 45 ] simplifiying candidate #<alt-event (λ (a b c d) (log (/ (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) a)))>
* [enter]simplify:  Simplifying (log (/ (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) a))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) (log a))
* * * * [misc]progress:  [ 3 / 45 ] simplifiying candidate #<alt-event (λ (a b c d) (log (/ (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) a)))>
* [enter]simplify:  Simplifying (log (/ (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) a))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) (log a))
* * * * [misc]progress:  [ 4 / 45 ] simplifiying candidate #<alt-event (λ (a b c d) (log (/ (exp (atan2 (atan2 a c) a)) a)))>
* [enter]simplify:  Simplifying (log (/ (exp (atan2 (atan2 a c) a)) a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 a c) a) (log a))
* * * * [misc]progress:  [ 5 / 45 ] simplifiying candidate #<alt-event (λ (a b c d) (log (/ (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) a)))>
* [enter]simplify:  Simplifying (log (/ (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) a))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) (log a))
* * * * [misc]progress:  [ 6 / 45 ] simplifiying candidate #<alt-event (λ (a b c d) (log (/ (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) a)))>
* [enter]simplify:  Simplifying (log (/ (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) a))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) (log a))
* * * * [misc]progress:  [ 7 / 45 ] simplifiying candidate #<alt-event (λ (a b c d) (log (/ (exp (atan2 (atan2 a c) a)) a)))>
* [enter]simplify:  Simplifying (log (/ (exp (atan2 (atan2 a c) a)) a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 a c) a) (log a))
* * * * [misc]progress:  [ 8 / 45 ] simplifiying candidate #<alt-event (λ (a b c d) (log (/ (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) a)) a)))>
* [enter]simplify:  Simplifying (log (/ (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) a)) a))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 (/ 1 a) (/ 1 c)) a) (log a))
* * * * [misc]progress:  [ 9 / 45 ] simplifiying candidate #<alt-event (λ (a b c d) (log (/ (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) a)) a)))>
* [enter]simplify:  Simplifying (log (/ (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) a)) a))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 (/ -1 a) (/ -1 c)) a) (log a))
* * * * [misc]progress:  [ 10 / 45 ] simplifiying candidate #<alt-event (λ (a b c d) (log (/ (exp (atan2 (atan2 a c) a)) a)))>
* [enter]simplify:  Simplifying (log (/ (exp (atan2 (atan2 a c) a)) a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 a c) a) (log a))
* * * * [misc]progress:  [ 11 / 45 ] simplifiying candidate #<alt-event (λ (a b c d) (log (/ (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) a)))>
* [enter]simplify:  Simplifying (log (/ (exp (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a))) a))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 (/ 1 a) (/ 1 c)) (/ 1 a)) (log a))
* * * * [misc]progress:  [ 12 / 45 ] simplifiying candidate #<alt-event (λ (a b c d) (log (/ (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) a)))>
* [enter]simplify:  Simplifying (log (/ (exp (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a))) a))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 (/ -1 a) (/ -1 c)) (/ -1 a)) (log a))
* * * * [misc]progress:  [ 13 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (exp (pow (atan2 (atan2 a c) a) 1)) a)))>
* * * * [misc]progress:  [ 14 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (exp (exp (log (atan2 (atan2 a c) a)))) a)))>
* [enter]simplify:  Simplifying (log (atan2 (atan2 a c) a))
* * [misc]simplify:  iters left: 3 (5 enodes)
* [exit]simplify:  Simplified to (log (atan2 (atan2 a c) a))
* [exit]simplify:  Simplified to (log (atan2 (atan2 a c) a))
* * * * [misc]progress:  [ 15 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (exp (log (exp (atan2 (atan2 a c) a)))) a)))>
* [enter]simplify:  Simplifying (exp (atan2 (atan2 a c) a))
* * [misc]simplify:  iters left: 3 (5 enodes)
* [exit]simplify:  Simplified to (exp (atan2 (atan2 a c) a))
* [exit]simplify:  Simplified to (exp (atan2 (atan2 a c) a))
* * * * [misc]progress:  [ 16 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (exp (cube (cbrt (atan2 (atan2 a c) a)))) a)))>
* [enter]simplify:  Simplifying (cbrt (atan2 (atan2 a c) a))
* * [misc]simplify:  iters left: 3 (5 enodes)
* [exit]simplify:  Simplified to (cbrt (atan2 (atan2 a c) a))
* [exit]simplify:  Simplified to (cbrt (atan2 (atan2 a c) a))
* * * * [misc]progress:  [ 17 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (exp (cbrt (cube (atan2 (atan2 a c) a)))) a)))>
* [enter]simplify:  Simplifying (cube (atan2 (atan2 a c) a))
* * [misc]simplify:  iters left: 3 (5 enodes)
* * [misc]simplify:  iters left: 2 (7 enodes)
* * [misc]simplify:  iters left: 1 (9 enodes)
* [exit]simplify:  Simplified to (cube (atan2 (atan2 a c) a))
* [exit]simplify:  Simplified to (cube (atan2 (atan2 a c) a))
* * * * [misc]progress:  [ 18 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (exp (sqr (sqrt (atan2 (atan2 a c) a)))) a)))>
* [enter]simplify:  Simplifying (sqrt (atan2 (atan2 a c) a))
* * [misc]simplify:  iters left: 3 (5 enodes)
* [exit]simplify:  Simplified to (sqrt (atan2 (atan2 a c) a))
* [exit]simplify:  Simplified to (sqrt (atan2 (atan2 a c) a))
* * * * [misc]progress:  [ 19 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (exp (* 1 (atan2 (atan2 a c) a))) a)))>
* * * * [misc]progress:  [ 20 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (pow (exp (atan2 (atan2 a c) a)) 1) a)))>
* * * * [misc]progress:  [ 21 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (pow (exp 1) (atan2 (atan2 a c) a)) a)))>
* [enter]simplify:  Simplifying (exp 1)
* * [misc]simplify:  iters left: 1 (2 enodes)
* [exit]simplify:  Simplified to E
* [exit]simplify:  Simplified to E
* * * * [misc]progress:  [ 22 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (exp (log (exp (atan2 (atan2 a c) a)))) a)))>
* [enter]simplify:  Simplifying (log (exp (atan2 (atan2 a c) a)))
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (atan2 (atan2 a c) a)
* [exit]simplify:  Simplified to (atan2 (atan2 a c) a)
* * * * [misc]progress:  [ 23 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (log (exp (exp (atan2 (atan2 a c) a)))) a)))>
* [enter]simplify:  Simplifying (exp (exp (atan2 (atan2 a c) a)))
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (exp (exp (atan2 (atan2 a c) a)))
* [exit]simplify:  Simplified to (exp (exp (atan2 (atan2 a c) a)))
* * * * [misc]progress:  [ 24 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (cube (cbrt (exp (atan2 (atan2 a c) a)))) a)))>
* [enter]simplify:  Simplifying (cbrt (exp (atan2 (atan2 a c) a)))
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (cbrt (exp (atan2 (atan2 a c) a)))
* [exit]simplify:  Simplified to (cbrt (exp (atan2 (atan2 a c) a)))
* * * * [misc]progress:  [ 25 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (cbrt (cube (exp (atan2 (atan2 a c) a)))) a)))>
* [enter]simplify:  Simplifying (cube (exp (atan2 (atan2 a c) a)))
* * [misc]simplify:  iters left: 4 (6 enodes)
* * [misc]simplify:  iters left: 3 (8 enodes)
* * [misc]simplify:  iters left: 2 (12 enodes)
* * [misc]simplify:  iters left: 1 (16 enodes)
* [exit]simplify:  Simplified to (cube (exp (atan2 (atan2 a c) a)))
* [exit]simplify:  Simplified to (cube (exp (atan2 (atan2 a c) a)))
* * * * [misc]progress:  [ 26 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (sqr (sqrt (exp (atan2 (atan2 a c) a)))) a)))>
* [enter]simplify:  Simplifying (sqrt (exp (atan2 (atan2 a c) a)))
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (sqrt (exp (atan2 (atan2 a c) a)))
* [exit]simplify:  Simplified to (sqrt (exp (atan2 (atan2 a c) a)))
* * * * [misc]progress:  [ 27 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (* 1 (exp (atan2 (atan2 a c) a))) a)))>
* * * * [misc]progress:  [ 28 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (exp (atan2 (pow (atan2 a c) 1) a)) a)))>
* * * * [misc]progress:  [ 29 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (exp (atan2 (exp (log (atan2 a c))) a)) a)))>
* [enter]simplify:  Simplifying (log (atan2 a c))
* * [misc]simplify:  iters left: 2 (4 enodes)
* [exit]simplify:  Simplified to (log (atan2 a c))
* [exit]simplify:  Simplified to (log (atan2 a c))
* * * * [misc]progress:  [ 30 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (exp (atan2 (log (exp (atan2 a c))) a)) a)))>
* [enter]simplify:  Simplifying (exp (atan2 a c))
* * [misc]simplify:  iters left: 2 (4 enodes)
* [exit]simplify:  Simplified to (exp (atan2 a c))
* [exit]simplify:  Simplified to (exp (atan2 a c))
* * * * [misc]progress:  [ 31 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (exp (atan2 (cube (cbrt (atan2 a c))) a)) a)))>
* [enter]simplify:  Simplifying (cbrt (atan2 a c))
* * [misc]simplify:  iters left: 2 (4 enodes)
* [exit]simplify:  Simplified to (cbrt (atan2 a c))
* [exit]simplify:  Simplified to (cbrt (atan2 a c))
* * * * [misc]progress:  [ 32 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (exp (atan2 (cbrt (cube (atan2 a c))) a)) a)))>
* [enter]simplify:  Simplifying (cube (atan2 a c))
* * [misc]simplify:  iters left: 2 (4 enodes)
* * [misc]simplify:  iters left: 1 (6 enodes)
* [exit]simplify:  Simplified to (cube (atan2 a c))
* [exit]simplify:  Simplified to (cube (atan2 a c))
* * * * [misc]progress:  [ 33 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (exp (atan2 (sqr (sqrt (atan2 a c))) a)) a)))>
* [enter]simplify:  Simplifying (sqrt (atan2 a c))
* * [misc]simplify:  iters left: 2 (4 enodes)
* [exit]simplify:  Simplified to (sqrt (atan2 a c))
* [exit]simplify:  Simplified to (sqrt (atan2 a c))
* * * * [misc]progress:  [ 34 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (exp (atan2 (* 1 (atan2 a c)) a)) a)))>
* * * * [misc]progress:  [ 35 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (pow (/ (exp (atan2 (atan2 a c) a)) a) 1)))>
* * * * [misc]progress:  [ 36 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (exp (log (/ (exp (atan2 (atan2 a c) a)) a)))))>
* [enter]simplify:  Simplifying (log (/ (exp (atan2 (atan2 a c) a)) a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* [exit]simplify:  Simplified to (- (atan2 (atan2 a c) a) (log a))
* [exit]simplify:  Simplified to (- (atan2 (atan2 a c) a) (log a))
* * * * [misc]progress:  [ 37 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (log (exp (/ (exp (atan2 (atan2 a c) a)) a)))))>
* [enter]simplify:  Simplifying (exp (/ (exp (atan2 (atan2 a c) a)) a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* [exit]simplify:  Simplified to (exp (/ (exp (atan2 (atan2 a c) a)) a))
* [exit]simplify:  Simplified to (exp (/ (exp (atan2 (atan2 a c) a)) a))
* * * * [misc]progress:  [ 38 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (cube (cbrt (/ (exp (atan2 (atan2 a c) a)) a)))))>
* [enter]simplify:  Simplifying (cbrt (/ (exp (atan2 (atan2 a c) a)) a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* [exit]simplify:  Simplified to (cbrt (/ (exp (atan2 (atan2 a c) a)) a))
* [exit]simplify:  Simplified to (cbrt (/ (exp (atan2 (atan2 a c) a)) a))
* * * * [misc]progress:  [ 39 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (cbrt (cube (/ (exp (atan2 (atan2 a c) a)) a)))))>
* [enter]simplify:  Simplifying (cube (/ (exp (atan2 (atan2 a c) a)) a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (22 enodes)
* * [misc]simplify:  iters left: 3 (30 enodes)
* * [misc]simplify:  iters left: 2 (53 enodes)
* * [misc]simplify:  iters left: 1 (72 enodes)
* [exit]simplify:  Simplified to (cube (/ (exp (atan2 (atan2 a c) a)) a))
* [exit]simplify:  Simplified to (cube (/ (exp (atan2 (atan2 a c) a)) a))
* * * * [misc]progress:  [ 40 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (sqr (sqrt (/ (exp (atan2 (atan2 a c) a)) a)))))>
* [enter]simplify:  Simplifying (sqrt (/ (exp (atan2 (atan2 a c) a)) a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* [exit]simplify:  Simplified to (sqrt (/ (exp (atan2 (atan2 a c) a)) a))
* [exit]simplify:  Simplified to (sqrt (/ (exp (atan2 (atan2 a c) a)) a))
* * * * [misc]progress:  [ 41 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ (- (exp (atan2 (atan2 a c) a))) (- a))))>
* [enter]simplify:  Simplifying (- (exp (atan2 (atan2 a c) a)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* [exit]simplify:  Simplified to (- (exp (atan2 (atan2 a c) a)))
* [exit]simplify:  Simplified to (- (exp (atan2 (atan2 a c) a)))
* [enter]simplify:  Simplifying (- a)
* * [misc]simplify:  iters left: 2 (2 enodes)
* [exit]simplify:  Simplified to (- a)
* [exit]simplify:  Simplified to (- a)
* * * * [misc]progress:  [ 42 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (* 1 (/ (exp (atan2 (atan2 a c) a)) a))))>
* * * * [misc]progress:  [ 43 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (* (exp (atan2 (atan2 a c) a)) (/ 1 a))))>
* [enter]simplify:  Simplifying (/ 1 a)
* * [misc]simplify:  iters left: 2 (3 enodes)
* * [misc]simplify:  iters left: 1 (5 enodes)
* [exit]simplify:  Simplified to (/ 1 a)
* [exit]simplify:  Simplified to (/ 1 a)
* * * * [misc]progress:  [ 44 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ 1 (/ a (exp (atan2 (atan2 a c) a))))))>
* [enter]simplify:  Simplifying (/ a (exp (atan2 (atan2 a c) a)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* [exit]simplify:  Simplified to (/ a (exp (atan2 (atan2 a c) a)))
* [exit]simplify:  Simplified to (/ a (exp (atan2 (atan2 a c) a)))
* * * * [misc]progress:  [ 45 / 45 ] simplifiying candidate #<alt-delta (λ (a b c d) (log (/ 1 (/ a (exp (atan2 (atan2 a c) a))))))>
* [enter]simplify:  Simplifying (/ a (exp (atan2 (atan2 a c) a)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* [exit]simplify:  Simplified to (/ a (exp (atan2 (atan2 a c) a)))
* [exit]simplify:  Simplified to (/ a (exp (atan2 (atan2 a c) a)))
* * * [misc]progress:  adding candidates to table
* [misc]progress:  [Phase 3 of 3] Extracting.
* [enter]simplify:  Simplifying (/ (exp (atan2 (atan2 a c) a)) a)
* * [misc]simplify:  iters left: 5 (6 enodes)
* [exit]simplify:  Simplified to (/ (exp (atan2 (atan2 a c) a)) a)
* [exit]simplify:  Simplified to (/ (exp (atan2 (atan2 a c) a)) a)
* [enter]simplify:  Simplifying (log (- (atan2 (atan2 a c) a) (log a)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* [exit]simplify:  Simplified to (log (- (atan2 (atan2 a c) a) (log a)))
* [exit]simplify:  Simplified to (log (- (atan2 (atan2 a c) a) (log a)))
* [enter]simplify:  Simplifying (cube (- (atan2 (atan2 a c) a) (log a)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* * [misc]simplify:  iters left: 3 (11 enodes)
* [exit]simplify:  Simplified to (cube (- (atan2 (atan2 a c) a) (log a)))
* [exit]simplify:  Simplified to (cube (- (atan2 (atan2 a c) a) (log a)))
* [enter]simplify:  Simplifying (cbrt (/ (exp (atan2 (atan2 a c) a)) a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* [exit]simplify:  Simplified to (cbrt (/ (exp (atan2 (atan2 a c) a)) a))
* [exit]simplify:  Simplified to (cbrt (/ (exp (atan2 (atan2 a c) a)) a))