* [misc]progress:  [Phase 1 of 3] Setting up.
* * * [misc]progress:  [1/2] Preparing points
* * * * [misc]points:  Sampling 256 additional inputs, on iter 0 have 0 / 256
* * * * [misc]points:  Computing exacts on every 16 of 256 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts on every 8 of 256 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts on every 4 of 256 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts on every 2 of 256 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts for 256 points
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 129 additional inputs, on iter 1 have 127 / 256
* * * * [misc]points:  Computing exacts on every 8 of 129 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts on every 4 of 129 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts on every 2 of 129 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts for 129 points
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 72 additional inputs, on iter 2 have 184 / 256
* * * * [misc]points:  Computing exacts on every 4 of 72 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts on every 2 of 72 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts for 72 points
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 42 additional inputs, on iter 3 have 214 / 256
* * * * [misc]points:  Computing exacts on every 2 of 42 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts for 42 points
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 16 additional inputs, on iter 4 have 240 / 256
* * * * [misc]points:  Computing exacts for 16 points
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 11 additional inputs, on iter 5 have 245 / 256
* * * * [misc]points:  Computing exacts for 11 points
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 8 additional inputs, on iter 6 have 248 / 256
* * * * [misc]points:  Computing exacts for 8 points
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 6 additional inputs, on iter 7 have 250 / 256
* * * * [misc]points:  Computing exacts for 6 points
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 5 additional inputs, on iter 8 have 251 / 256
* * * * [misc]points:  Computing exacts for 5 points
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 4 additional inputs, on iter 9 have 252 / 256
* * * * [misc]points:  Computing exacts for 4 points
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 4 additional inputs, on iter 10 have 252 / 256
* * * * [misc]points:  Computing exacts for 4 points
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 4 additional inputs, on iter 11 have 252 / 256
* * * * [misc]points:  Computing exacts for 4 points
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 4 additional inputs, on iter 12 have 254 / 256
* * * * [misc]points:  Computing exacts for 4 points
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [exit]points:  Sampled 256 points with exact outputs
* * * [misc]progress:  [2/2] Setting up program.
* [misc]progress:  [Phase 2 of 3] Improving.
* [enter]simplify:  Simplifying (/ a (- (acos a)))
* * [misc]simplify:  iters left: 5 (4 enodes)
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* * [misc]progress:  iteration 1 / 4
* * * [misc]progress:  picking best candidate
* [misc]none:  Fresh alts: 1
* [misc]none:  All alts: 1
* [misc]none:  Fresh alt: (λ (a) (/ a (- (acos a))))
* [misc]none:  Fresh alt indexes
* [misc]none:  (λ (a) (/ a (- (acos a)))): 0
* [misc]none:  Best fresh alt per point
* [misc]none:  (-1.5896307370952378e-24): 0
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* [misc]none:  (-5.100815418059268e-90): 0
* [misc]none:  (6.009493492582987e-296): 0
* [misc]none:  (-1.157925061166081e-58): 0
* [misc]none:  All alt indexes
* [misc]none:  (λ (a) (/ a (- (acos a)))): 0
* [misc]none:  Best alt per point
* [misc]none:  (-1.5896307370952378e-24): 0
* [misc]none:  (-2.381600975603585e-126): 0
* [misc]none:  (1.1078263738557817e-173): 0
* [misc]none:  (-4.8901493658439805e-257): 0
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* [misc]none:  (2.7441626242764893e-109): 0
* [misc]none:  (-1.2184545386686845e-292): 0
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* [misc]none:  (1.4517955555700533e-57): 0
* [misc]none:  (-6.624186711279531e-158): 0
* [misc]none:  (-2.28428829200312e-74): 0
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* [misc]none:  (-5.9357220490245764e-15): 0
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* [misc]none:  (-8.397564680171817e-171): 0
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* [misc]none:  (7.700703882618771e-282): 0
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* [misc]none:  (-7.706007717334245e-133): 0
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* [misc]none:  (-1.2153695779764702e-107): 0
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* [misc]none:  (1.2154965615643017e-95): 0
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* [misc]none:  (-1.7028093168367145e-212): 0
* [misc]none:  (-3.61122588585932e-122): 0
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* [misc]none:  (1.2926844442603449e-272): 0
* [misc]none:  (-4.994865514247891e-53): 0
* [misc]none:  (8.02593234133885e-135): 0
* [misc]none:  (-3.2452411716841134e-254): 0
* [misc]none:  (4.693484541613577e-225): 0
* [misc]none:  (-6.27613587070019e-241): 0
* [misc]none:  (1.488087021136329e-285): 0
* [misc]none:  (1.9700593229138827e-50): 0
* [misc]none:  (-7.343076758450515e-245): 0
* [misc]none:  (1.6501972239963874e-258): 0
* [misc]none:  (-1.9062985237621918e-44): 0
* [misc]none:  (-7.188940579708169e-182): 0
* [misc]none:  (-3.5617683302613897e-208): 0
* [misc]none:  (3.049268063166789e-38): 0
* [misc]none:  (-3.2414750156447513e-81): 0
* [misc]none:  (-9.695048812228804e-33): 0
* [misc]none:  (-3.468803990975246e-114): 0
* [misc]none:  (-1.4358426706351876e-229): 0
* [misc]none:  (-1.367452993894295e-129): 0
* [misc]none:  (3.388041199273477e-265): 0
* [misc]none:  (3.7476721237841876e-281): 0
* [misc]none:  (4.811543151950025e-33): 0
* [misc]none:  (-9.85118113779452e-207): 0
* [misc]none:  (1.7265727720717877e-65): 0
* [misc]none:  (6.525431496731668e-64): 0
* [misc]none:  (2.704077310435608e-253): 0
* [misc]none:  (2.7511202385052856e-18): 0
* [misc]none:  (3.82956155404422e-299): 0
* [misc]none:  (-8.2157022007629e-58): 0
* [misc]none:  (-8.347536812100916e-44): 0
* [misc]none:  (-2.710750607360271e-260): 0
* [misc]none:  (4.296582624822391e-200): 0
* [misc]none:  (-2.8582758774924267e-140): 0
* [misc]none:  (9.139158849230913e-305): 0
* [misc]none:  (6.683383915725252e-271): 0
* [misc]none:  (1.830961252259433e-59): 0
* [misc]none:  (-1.7614646333235536e-68): 0
* [misc]none:  (4.068667347744151e-179): 0
* [misc]none:  (-2.7764650204569527e-216): 0
* [misc]none:  (-3.81685776062912e-89): 0
* [misc]none:  (3.853952974089327e-228): 0
* [misc]none:  (-5.100815418059268e-90): 0
* [misc]none:  (6.009493492582987e-296): 0
* [misc]none:  (-1.157925061166081e-58): 0
* [misc]none:  Picked alt (λ (a) (/ a (- (acos a))))
* * * * [misc]pick:  Picked  #<alt-event (λ (a) (/ a (- (acos a))))>
* * * [misc]progress:  localizing error
* * * [misc]progress:  generating rewritten candidates
* * * * [misc]progress:  [ 1 / 1 ] rewriting at (2)
* * * [misc]progress:  generating series expansions
* * * * [misc]progress:  [ 1 / 1 ] generating series at (2)
* [misc]approximate:  Taking taylor expansion of (/ a (- (acos a))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ a (- (acos a))) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos a))) into (/ -1 (acos a))
* [misc]taylor:  Taking taylor expansion of (/ a (- (acos a))) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos a))) into (/ -1 (acos a))
* [misc]backup-simplify:  Simplify (/ -1 (acos a)) into (/ -1 (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos a))) (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ -1 (acos a)) a) into (* -1 (/ a (acos a)))
* [misc]approximate:  Taking taylor expansion of (/ (/ 1 a) (- (acos (/ 1 a)))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 a) (- (acos (/ 1 a)))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 a) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos (/ 1 a)))) into (/ -1 (acos (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 a) (- (acos (/ 1 a)))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 a) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos (/ 1 a)))) into (/ -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ -1 (acos (/ 1 a))) into (/ -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ 1 a)))) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ -1 (acos (/ 1 (/ 1 a)))) (/ 1 (/ 1 a))) into (* -1 (/ a (acos a)))
* [misc]approximate:  Taking taylor expansion of (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 (- a)) in a
* [misc]taylor:  Taking taylor expansion of (- a) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ -1 (- (acos (/ -1 a)))) into (/ 1 (acos (/ -1 a)))
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 (- a)) (- (acos (/ 1 (- a))))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 (- a)) in a
* [misc]taylor:  Taking taylor expansion of (- a) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ -1 (- (acos (/ -1 a)))) into (/ 1 (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (acos (/ -1 a))) into (/ 1 (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (/ 0 (- (acos (/ -1 a)))) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ 1 (acos (/ -1 (/ 1 (- a))))) (/ 1 (/ 1 (- a)))) into (* -1 (/ a (acos a)))
* * * [misc]progress:  simplifying candidates
* * * * [misc]progress:  [ 1 / 23 ] simplifiying candidate #<alt-delta (λ (a) (pow (/ a (- (acos a))) 1))>
* * * * [misc]progress:  [ 2 / 23 ] simplifiying candidate #<alt-delta (λ (a) (exp (log (/ a (- (acos a))))))>
* [enter]simplify:  Simplifying (log (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* * [misc]simplify:  iters left: 3 (11 enodes)
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* * * * [misc]progress:  [ 3 / 23 ] simplifiying candidate #<alt-delta (λ (a) (log (exp (/ a (- (acos a))))))>
* [enter]simplify:  Simplifying (exp (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* * * * [misc]progress:  [ 4 / 23 ] simplifiying candidate #<alt-delta (λ (a) (* (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a))))) (cbrt (/ a (- (acos a))))))>
* [enter]simplify:  Simplifying (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* [exit]simplify:  Simplified to (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a)))))
* [enter]simplify:  Simplifying (cbrt (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 5 / 23 ] simplifiying candidate #<alt-delta (λ (a) (cbrt (* (* (/ a (- (acos a))) (/ a (- (acos a)))) (/ a (- (acos a))))))>
* [enter]simplify:  Simplifying (* (* (/ a (- (acos a))) (/ a (- (acos a)))) (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (31 enodes)
* * [misc]simplify:  iters left: 3 (60 enodes)
* * [misc]simplify:  iters left: 2 (121 enodes)
* * [misc]simplify:  iters left: 1 (254 enodes)
* [exit]simplify:  Simplified to (/ (* (/ a (acos a)) (/ a (acos a))) (/ (- (acos a)) a))
* [exit]simplify:  Simplified to (/ (* (/ a (acos a)) (/ a (acos a))) (/ (- (acos a)) a))
* * * * [misc]progress:  [ 6 / 23 ] simplifiying candidate #<alt-delta (λ (a) (* (sqrt (/ a (- (acos a)))) (sqrt (/ a (- (acos a))))))>
* [enter]simplify:  Simplifying (sqrt (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [enter]simplify:  Simplifying (sqrt (/ a (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 7 / 23 ] simplifiying candidate #<alt-delta (λ (a) (/ (- a) (- (- (acos a)))))>
* [enter]simplify:  Simplifying (- a)
* * [misc]simplify:  iters left: 2 (2 enodes)
* [exit]simplify:  Simplified to (- a)
* [exit]simplify:  Simplified to (- a)
* [enter]simplify:  Simplifying (- (- (acos a)))
* * [misc]simplify:  iters left: 5 (4 enodes)
* [exit]simplify:  Simplified to (acos a)
* [exit]simplify:  Simplified to (acos a)
* * * * [misc]progress:  [ 8 / 23 ] simplifiying candidate #<alt-delta (λ (a) (* 1 (/ a (- (acos a)))))>
* * * * [misc]progress:  [ 9 / 23 ] simplifiying candidate #<alt-delta (λ (a) (* a (/ 1 (- (acos a)))))>
* [enter]simplify:  Simplifying (/ 1 (- (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (7 enodes)
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* * * * [misc]progress:  [ 10 / 23 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ (- (acos a)) a)))>
* [enter]simplify:  Simplifying (/ (- (acos a)) a)
* * [misc]simplify:  iters left: 5 (4 enodes)
* * [misc]simplify:  iters left: 4 (6 enodes)
* [exit]simplify:  Simplified to (/ (- (acos a)) a)
* [exit]simplify:  Simplified to (/ (- (acos a)) a)
* * * * [misc]progress:  [ 11 / 23 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ a (* (cbrt (- (acos a))) (cbrt (- (acos a))))) (cbrt (- (acos a)))))>
* [enter]simplify:  Simplifying (/ a (* (cbrt (- (acos a))) (cbrt (- (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* [exit]simplify:  Simplified to (/ (/ a (cbrt (- (acos a)))) (cbrt (- (acos a))))
* [exit]simplify:  Simplified to (/ (/ a (cbrt (- (acos a)))) (cbrt (- (acos a))))
* * * * [misc]progress:  [ 12 / 23 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ a (sqrt (- (acos a)))) (sqrt (- (acos a)))))>
* [enter]simplify:  Simplifying (/ a (sqrt (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (/ a (sqrt (- (acos a))))
* [exit]simplify:  Simplified to (/ a (sqrt (- (acos a))))
* * * * [misc]progress:  [ 13 / 23 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ a 1) (- (acos a))))>
* [enter]simplify:  Simplifying (/ a 1)
* * [misc]simplify:  iters left: 2 (3 enodes)
* * [misc]simplify:  iters left: 1 (5 enodes)
* [exit]simplify:  Simplified to a
* [exit]simplify:  Simplified to a
* * * * [misc]progress:  [ 14 / 23 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ a -1) (acos a)))>
* [enter]simplify:  Simplifying (/ a -1)
* * [misc]simplify:  iters left: 2 (3 enodes)
* [exit]simplify:  Simplified to (/ a -1)
* [exit]simplify:  Simplified to (/ a -1)
* * * * [misc]progress:  [ 15 / 23 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ a (- (* (cbrt (acos a)) (cbrt (acos a))))) (cbrt (acos a))))>
* [enter]simplify:  Simplifying (/ a (- (* (cbrt (acos a)) (cbrt (acos a)))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (9 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* [exit]simplify:  Simplified to (/ (/ a (cbrt (acos a))) (- (cbrt (acos a))))
* [exit]simplify:  Simplified to (/ (/ a (cbrt (acos a))) (- (cbrt (acos a))))
* * * * [misc]progress:  [ 16 / 23 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ a (- (sqrt (acos a)))) (sqrt (acos a))))>
* [enter]simplify:  Simplifying (/ a (- (sqrt (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (/ a (- (sqrt (acos a))))
* [exit]simplify:  Simplified to (/ a (- (sqrt (acos a))))
* * * * [misc]progress:  [ 17 / 23 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ a (- 1)) (acos a)))>
* [enter]simplify:  Simplifying (/ a (- 1))
* * [misc]simplify:  iters left: 4 (4 enodes)
* * [misc]simplify:  iters left: 3 (6 enodes)
* [exit]simplify:  Simplified to (/ a (- 1))
* [exit]simplify:  Simplified to (/ a (- 1))
* * * * [misc]progress:  [ 18 / 23 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ a (* (cbrt (acos a)) (cbrt (acos a)))) (- (cbrt (acos a)))))>
* [enter]simplify:  Simplifying (/ a (* (cbrt (acos a)) (cbrt (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* * [misc]simplify:  iters left: 5 (7 enodes)
* [exit]simplify:  Simplified to (/ a (* (cbrt (acos a)) (cbrt (acos a))))
* [exit]simplify:  Simplified to (/ a (* (cbrt (acos a)) (cbrt (acos a))))
* * * * [misc]progress:  [ 19 / 23 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ a (sqrt (acos a))) (- (sqrt (acos a)))))>
* [enter]simplify:  Simplifying (/ a (sqrt (acos a)))
* * [misc]simplify:  iters left: 4 (4 enodes)
* [exit]simplify:  Simplified to (/ a (sqrt (acos a)))
* [exit]simplify:  Simplified to (/ a (sqrt (acos a)))
* * * * [misc]progress:  [ 20 / 23 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ a 1) (- (acos a))))>
* [enter]simplify:  Simplifying (/ a 1)
* * [misc]simplify:  iters left: 2 (3 enodes)
* * [misc]simplify:  iters left: 1 (5 enodes)
* [exit]simplify:  Simplified to a
* [exit]simplify:  Simplified to a
* * * * [misc]progress:  [ 21 / 23 ] simplifiying candidate #<alt-event (λ (a) (* -1 (/ a (acos a))))>
* [enter]simplify:  Simplifying (* -1 (/ a (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* * [misc]simplify:  iters left: 3 (14 enodes)
* * [misc]simplify:  iters left: 2 (16 enodes)
* * [misc]simplify:  iters left: 1 (18 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 22 / 23 ] simplifiying candidate #<alt-event (λ (a) (* -1 (/ a (acos a))))>
* [enter]simplify:  Simplifying (* -1 (/ a (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* * [misc]simplify:  iters left: 3 (14 enodes)
* * [misc]simplify:  iters left: 2 (16 enodes)
* * [misc]simplify:  iters left: 1 (18 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 23 / 23 ] simplifiying candidate #<alt-event (λ (a) (* -1 (/ a (acos a))))>
* [enter]simplify:  Simplifying (* -1 (/ a (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* * [misc]simplify:  iters left: 3 (14 enodes)
* * [misc]simplify:  iters left: 2 (16 enodes)
* * [misc]simplify:  iters left: 1 (18 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * [misc]progress:  adding candidates to table
* * [misc]progress:  iteration 2 / 4
* * * [misc]progress:  picking best candidate
* [misc]none:  Fresh alts: 4
* [misc]none:  All alts: 5
* [misc]none:  Fresh alt: (λ (a) (* (sqrt (/ a (- (acos a)))) (sqrt (/ a (- (acos a))))))
* [misc]none:  Fresh alt: (λ (a) (cbrt (/ (* (/ a (acos a)) (/ a (acos a))) (/ (- (acos a)) a))))
* [misc]none:  Non-fresh alt: (λ (a) (/ a (- (acos a))))
* [misc]none:  Fresh alt: (λ (a) (* (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a))))) (cbrt (/ a (- (acos a))))))
* [misc]none:  Fresh alt: (λ (a) (/ 1 (/ (- (acos a)) a)))
* [misc]none:  Fresh alt indexes
* [misc]none:  (λ (a) (* (sqrt (/ a (- (acos a)))) (sqrt (/ a (- (acos a)))))): 0
* [misc]none:  (λ (a) (cbrt (/ (* (/ a (acos a)) (/ a (acos a))) (/ (- (acos a)) a)))): 1
* [misc]none:  (λ (a) (* (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a))))) (cbrt (/ a (- (acos a)))))): 2
* [misc]none:  (λ (a) (/ 1 (/ (- (acos a)) a))): 3
* [misc]none:  Best fresh alt per point
* [misc]none:  (-1.5896307370952378e-24): 0
* [misc]none:  (-2.381600975603585e-126): 0
* [misc]none:  (1.1078263738557817e-173): 3
* [misc]none:  (-4.8901493658439805e-257): 0
* [misc]none:  (-1.086848415384618e-149): 3
* [misc]none:  (1.5400917624685415e-295): 3
* [misc]none:  (1.389009890486587e-304): 3
* [misc]none:  (-0.07645769362495446): 0
* [misc]none:  (3.5836534998638334e-135): 3
* [misc]none:  (5.874263446950659e-136): 3
* [misc]none:  (-4.6360422655231974e-215): 0
* [misc]none:  (1.3639040980897921e-39): 1
* [misc]none:  (2.4497413502625085e-301): 3
* [misc]none:  (1.9836536473017196e-256): 3
* [misc]none:  (2.7441626242764893e-109): 3
* [misc]none:  (-1.2184545386686845e-292): 0
* [misc]none:  (-4.164360616471795e-297): 0
* [misc]none:  (1.1330111314315052e-297): 3
* [misc]none:  (6.333415879143823e-203): 3
* [misc]none:  (-1.1408068010697186e-09): 0
* [misc]none:  (6.534790094984563e-249): 2
* [misc]none:  (-6.136769236604219e-245): 0
* [misc]none:  (-1.5184287807448694e-256): 0
* [misc]none:  (9.20482191500962e-294): 3
* [misc]none:  (6.826390525782658e-164): 3
* [misc]none:  (1.4517955555700533e-57): 1
* [misc]none:  (-6.624186711279531e-158): 3
* [misc]none:  (-2.28428829200312e-74): 1
* [misc]none:  (6.319063013887454e-198): 3
* [misc]none:  (4.013577168037153e-101): 1
* [misc]none:  (-5.9357220490245764e-15): 0
* [misc]none:  (-1.423411965411883e-294): 3
* [misc]none:  (1.5130621813503031e-75): 1
* [misc]none:  (-3.3795898713138266e-300): 0
* [misc]none:  (-8.397564680171817e-171): 0
* [misc]none:  (-5.030258942894069e-286): 0
* [misc]none:  (7.700703882618771e-282): 3
* [misc]none:  (-4.182069781177431e-143): 3
* [misc]none:  (3.8976396927163173e-162): 3
* [misc]none:  (-4.334942407090635e-248): 0
* [misc]none:  (-5.434332993935807e-16): 0
* [misc]none:  (9.422179697047065e-164): 3
* [misc]none:  (2.0152844845402166e-297): 3
* [misc]none:  (8.604490187894414e-112): 2
* [misc]none:  (1.1753499799973743e-97): 1
* [misc]none:  (-1.4789327900215312e-68): 0
* [misc]none:  (1.7699153793529457e-292): 3
* [misc]none:  (-1.4258769564549258e-208): 0
* [misc]none:  (-7.278263595880122e-193): 3
* [misc]none:  (-2.126351281480013e-88): 0
* [misc]none:  (4.1993878019740277e-286): 2
* [misc]none:  (-0.00023602766722364432): 1
* [misc]none:  (-4.006330508771236e-123): 3
* [misc]none:  (1.3228826725861251e-83): 3
* [misc]none:  (-1.319380347151282e-215): 0
* [misc]none:  (1.1326695724237201e-117): 3
* [misc]none:  (2.0115496002781107e-145): 3
* [misc]none:  (-2.7349284820526125e-289): 0
* [misc]none:  (1.8862750447266752e-53): 1
* [misc]none:  (3.0319757073152243e-73): 1
* [misc]none:  (3.46946296425657e-151): 3
* [misc]none:  (-1.5345220119867362e-54): 0
* [misc]none:  (4.4617997614332734e-49): 1
* [misc]none:  (-4.576042298933677e-291): 3
* [misc]none:  (5.1841759100413795e-161): 3
* [misc]none:  (6.821311827045434e-30): 1
* [misc]none:  (-1.9929766413300646e-81): 0
* [misc]none:  (2.6830861914889714e-191): 3
* [misc]none:  (-1.9739730389420339e-53): 3
* [misc]none:  (-1.3992932767813926e-176): 0
* [misc]none:  (2.5419285128257477e-50): 1
* [misc]none:  (-5.652687215490466e-220): 0
* [misc]none:  (-5.689324367802329e-246): 3
* [misc]none:  (-4.3909971879838963e-305): 2
* [misc]none:  (1.1909630224861144e-308): 2
* [misc]none:  (-2.930048407292739e-56): 0
* [misc]none:  (-6.427869387517747e-307): 0
* [misc]none:  (9.212199844523645e-229): 3
* [misc]none:  (-1.2461956087023843e-38): 0
* [misc]none:  (3.003386221248247e-77): 1
* [misc]none:  (7.613990227232114e-101): 3
* [misc]none:  (1.4369290385678577e-161): 2
* [misc]none:  (-1.8419406107088546e-16): 0
* [misc]none:  (2.3887736368263357e-225): 3
* [misc]none:  (-6.168974554229468e-230): 3
* [misc]none:  (2.116370076668309e-191): 2
* [misc]none:  (-1.1883563404969162e-50): 3
* [misc]none:  (-6.903597812238514e-236): 0
* [misc]none:  (1.1142271720543672e-206): 2
* [misc]none:  (2.8003106991789085e-69): 2
* [misc]none:  (-3.912955183972641e-245): 0
* [misc]none:  (5.515506992492392e-277): 3
* [misc]none:  (2.595646488837273e-219): 3
* [misc]none:  (-1.0403226659956264e-12): 1
* [misc]none:  (3.108236652528406e-297): 2
* [misc]none:  (7.181266914182018e-165): 3
* [misc]none:  (-4.054936013280633e-214): 3
* [misc]none:  (-5.931595524156171e-137): 3
* [misc]none:  (1.1353295840851429e-96): 3
* [misc]none:  (-1.9487210599798821e-283): 3
* [misc]none:  (2.347768069961951e-79): 3
* [misc]none:  (7.595028648060239e-286): 3
* [misc]none:  (-1.7004214918492403e-195): 2
* [misc]none:  (-2.9451802210491167e-226): 2
* [misc]none:  (4.5690448860660455e-67): 3
* [misc]none:  (-4.213852294319719e-45): 0
* [misc]none:  (1.0832199703372366e-253): 3
* [misc]none:  (-1.028098363509014e-206): 0
* [misc]none:  (3.934156464498665e-121): 3
* [misc]none:  (-2.030003858554109e-299): 3
* [misc]none:  (0.0005921945720183679): 1
* [misc]none:  (2.8115284450926948e-120): 3
* [misc]none:  (-1.4914047823213697e-303): 0
* [misc]none:  (-5.51972060484157e-206): 0
* [misc]none:  (-2.222084476892157e-27): 1
* [misc]none:  (2.9394468165964015e-257): 3
* [misc]none:  (3.271929098149761e-144): 3
* [misc]none:  (3.0718166030691505e-80): 3
* [misc]none:  (6.604350361119279e-291): 3
* [misc]none:  (3.861477555295976e-66): 1
* [misc]none:  (7.835819247789118e-215): 3
* [misc]none:  (-1.7331826939437403e-32): 1
* [misc]none:  (1.5041078345043152e-175): 3
* [misc]none:  (-7.5213132710662e-74): 0
* [misc]none:  (3.0457736919219457e-222): 3
* [misc]none:  (-1.1587029546828107e-151): 0
* [misc]none:  (-2.4216252182489007e-26): 1
* [misc]none:  (-1.4390028162741748e-46): 0
* [misc]none:  (8.124998850854922e-91): 1
* [misc]none:  (-5.655718042216706e-88): 0
* [misc]none:  (3.19314088639968e-300): 3
* [misc]none:  (-2.460746881557577e-120): 3
* [misc]none:  (2.6209483109511002e-99): 1
* [misc]none:  (-1.184307734105162e-152): 3
* [misc]none:  (3.9436987604242746e-188): 3
* [misc]none:  (1.2987545615858837e-229): 3
* [misc]none:  (1.3556558330338219e-279): 3
* [misc]none:  (5.600091178152213e-210): 3
* [misc]none:  (7.360949206952843e-212): 2
* [misc]none:  (-4.623471500501843e-242): 3
* [misc]none:  (2.924154450481512e-86): 1
* [misc]none:  (1.1766044207630259e-195): 2
* [misc]none:  (-0.014763539181529813): 0
* [misc]none:  (-2.5295585364629736e-253): 0
* [misc]none:  (3.125863179986306e-134): 3
* [misc]none:  (-8.950192398328319e-216): 0
* [misc]none:  (-1.7783570294902284e-29): 0
* [misc]none:  (4.319230432601922e-289): 2
* [misc]none:  (6.0910080487156845e-145): 3
* [misc]none:  (-3.2028793163485514e-267): 0
* [misc]none:  (-5.767560760391122e-80): 0
* [misc]none:  (3.087465078472461e-297): 3
* [misc]none:  (1.8641835944090122e-68): 1
* [misc]none:  (2.9298628929536803e-07): 3
* [misc]none:  (2.112352033422511e-76): 1
* [misc]none:  (-1.4985268459995148e-46): 3
* [misc]none:  (5.682432409793209e-103): 3
* [misc]none:  (3.763740454339611e-154): 3
* [misc]none:  (2.337605690906294e-85): 3
* [misc]none:  (-4.885442056107934e-227): 0
* [misc]none:  (-3.356284453668777e-114): 0
* [misc]none:  (1.939469755263449e-274): 3
* [misc]none:  (2.0558821145728443e-244): 2
* [misc]none:  (7.118304679887613e-64): 3
* [misc]none:  (2.3966615634258388e-54): 1
* [misc]none:  (-5.628195320915282e-68): 1
* [misc]none:  (-3.2549065076282373e-223): 2
* [misc]none:  (-2.9085637996437565e-109): 3
* [misc]none:  (-6.751934028520499e-153): 3
* [misc]none:  (1.0609576781328471e-51): 1
* [misc]none:  (-2.9598382711916395e-27): 0
* [misc]none:  (1.9357477509582754e-93): 1
* [misc]none:  (-3.868414697676859e-187): 3
* [misc]none:  (-0.00034026123764188893): 3
* [misc]none:  (-6.976081079926557e-283): 3
* [misc]none:  (-3.37039684741933e-178): 0
* [misc]none:  (-2.4597612805403014e-225): 0
* [misc]none:  (2.0217918620332625e-85): 3
* [misc]none:  (5.6334012743355e-180): 3
* [misc]none:  (2.872174301870785e-238): 3
* [misc]none:  (-7.645827496994951e-25): 0
* [misc]none:  (2.885576028912994e-235): 3
* [misc]none:  (-4.494398935743406e-151): 0
* [misc]none:  (2.7377399598585416e-269): 2
* [misc]none:  (1.2391428993123195e-53): 3
* [misc]none:  (-9.565609472547322e-124): 3
* [misc]none:  (-7.966969819213301e-111): 0
* [misc]none:  (5.834035641946906e-257): 3
* [misc]none:  (-2.0517902863946083e-102): 0
* [misc]none:  (-1.7127652241866663e-27): 0
* [misc]none:  (2.1519168903719224e-48): 1
* [misc]none:  (-1.933548091484468e-204): 0
* [misc]none:  (-1.9108430739228874e-168): 3
* [misc]none:  (2.467422452934927e-37): 1
* [misc]none:  (5.976566162781828e-262): 2
* [misc]none:  (-4.452114039611652e-132): 3
* [misc]none:  (1.638426277474575e-287): 3
* [misc]none:  (-1.0864842934460505e-25): 0
* [misc]none:  (-1.142257873712315e-49): 0
* [misc]none:  (-3.0074667053035266e-198): 0
* [misc]none:  (7.549936203493533e-264): 3
* [misc]none:  (-7.706007717334245e-133): 0
* [misc]none:  (-1.917715355857765e-213): 0
* [misc]none:  (-1.2153695779764702e-107): 0
* [misc]none:  (-5.6718708555151934e-182): 0
* [misc]none:  (-4.077199751463202e-279): 3
* [misc]none:  (1.2154965615643017e-95): 1
* [misc]none:  (1.7054753386147003e-193): 3
* [misc]none:  (1.0400546097675973e-191): 3
* [misc]none:  (-1.7028093168367145e-212): 3
* [misc]none:  (-3.61122588585932e-122): 0
* [misc]none:  (-4.1072671632900297e-249): 0
* [misc]none:  (1.2926844442603449e-272): 2
* [misc]none:  (-4.994865514247891e-53): 0
* [misc]none:  (8.02593234133885e-135): 3
* [misc]none:  (-3.2452411716841134e-254): 3
* [misc]none:  (4.693484541613577e-225): 3
* [misc]none:  (-6.27613587070019e-241): 3
* [misc]none:  (1.488087021136329e-285): 3
* [misc]none:  (1.9700593229138827e-50): 1
* [misc]none:  (-7.343076758450515e-245): 3
* [misc]none:  (1.6501972239963874e-258): 3
* [misc]none:  (-1.9062985237621918e-44): 3
* [misc]none:  (-7.188940579708169e-182): 0
* [misc]none:  (-3.5617683302613897e-208): 0
* [misc]none:  (3.049268063166789e-38): 1
* [misc]none:  (-3.2414750156447513e-81): 0
* [misc]none:  (-9.695048812228804e-33): 0
* [misc]none:  (-3.468803990975246e-114): 0
* [misc]none:  (-1.4358426706351876e-229): 0
* [misc]none:  (-1.367452993894295e-129): 0
* [misc]none:  (3.388041199273477e-265): 3
* [misc]none:  (3.7476721237841876e-281): 3
* [misc]none:  (4.811543151950025e-33): 3
* [misc]none:  (-9.85118113779452e-207): 0
* [misc]none:  (1.7265727720717877e-65): 2
* [misc]none:  (6.525431496731668e-64): 1
* [misc]none:  (2.704077310435608e-253): 3
* [misc]none:  (2.7511202385052856e-18): 3
* [misc]none:  (3.82956155404422e-299): 3
* [misc]none:  (-8.2157022007629e-58): 1
* [misc]none:  (-8.347536812100916e-44): 0
* [misc]none:  (-2.710750607360271e-260): 0
* [misc]none:  (4.296582624822391e-200): 3
* [misc]none:  (-2.8582758774924267e-140): 0
* [misc]none:  (9.139158849230913e-305): 3
* [misc]none:  (6.683383915725252e-271): 3
* [misc]none:  (1.830961252259433e-59): 1
* [misc]none:  (-1.7614646333235536e-68): 0
* [misc]none:  (4.068667347744151e-179): 3
* [misc]none:  (-2.7764650204569527e-216): 0
* [misc]none:  (-3.81685776062912e-89): 0
* [misc]none:  (3.853952974089327e-228): 3
* [misc]none:  (-5.100815418059268e-90): 0
* [misc]none:  (6.009493492582987e-296): 3
* [misc]none:  (-1.157925061166081e-58): 0
* [misc]none:  All alt indexes
* [misc]none:  (λ (a) (* (sqrt (/ a (- (acos a)))) (sqrt (/ a (- (acos a)))))): 0
* [misc]none:  (λ (a) (cbrt (/ (* (/ a (acos a)) (/ a (acos a))) (/ (- (acos a)) a)))): 1
* [misc]none:  (λ (a) (/ a (- (acos a)))): 2
* [misc]none:  (λ (a) (* (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a))))) (cbrt (/ a (- (acos a)))))): 3
* [misc]none:  (λ (a) (/ 1 (/ (- (acos a)) a))): 4
* [misc]none:  Best alt per point
* [misc]none:  (-1.5896307370952378e-24): 0
* [misc]none:  (-2.381600975603585e-126): 0
* [misc]none:  (1.1078263738557817e-173): 2
* [misc]none:  (-4.8901493658439805e-257): 0
* [misc]none:  (-1.086848415384618e-149): 2
* [misc]none:  (1.5400917624685415e-295): 2
* [misc]none:  (1.389009890486587e-304): 2
* [misc]none:  (-0.07645769362495446): 0
* [misc]none:  (3.5836534998638334e-135): 2
* [misc]none:  (5.874263446950659e-136): 4
* [misc]none:  (-4.6360422655231974e-215): 0
* [misc]none:  (1.3639040980897921e-39): 1
* [misc]none:  (2.4497413502625085e-301): 2
* [misc]none:  (1.9836536473017196e-256): 2
* [misc]none:  (2.7441626242764893e-109): 2
* [misc]none:  (-1.2184545386686845e-292): 0
* [misc]none:  (-4.164360616471795e-297): 0
* [misc]none:  (1.1330111314315052e-297): 2
* [misc]none:  (6.333415879143823e-203): 2
* [misc]none:  (-1.1408068010697186e-09): 0
* [misc]none:  (6.534790094984563e-249): 3
* [misc]none:  (-6.136769236604219e-245): 0
* [misc]none:  (-1.5184287807448694e-256): 0
* [misc]none:  (9.20482191500962e-294): 2
* [misc]none:  (6.826390525782658e-164): 2
* [misc]none:  (1.4517955555700533e-57): 1
* [misc]none:  (-6.624186711279531e-158): 2
* [misc]none:  (-2.28428829200312e-74): 1
* [misc]none:  (6.319063013887454e-198): 4
* [misc]none:  (4.013577168037153e-101): 2
* [misc]none:  (-5.9357220490245764e-15): 0
* [misc]none:  (-1.423411965411883e-294): 4
* [misc]none:  (1.5130621813503031e-75): 1
* [misc]none:  (-3.3795898713138266e-300): 0
* [misc]none:  (-8.397564680171817e-171): 0
* [misc]none:  (-5.030258942894069e-286): 0
* [misc]none:  (7.700703882618771e-282): 2
* [misc]none:  (-4.182069781177431e-143): 4
* [misc]none:  (3.8976396927163173e-162): 2
* [misc]none:  (-4.334942407090635e-248): 0
* [misc]none:  (-5.434332993935807e-16): 2
* [misc]none:  (9.422179697047065e-164): 2
* [misc]none:  (2.0152844845402166e-297): 4
* [misc]none:  (8.604490187894414e-112): 2
* [misc]none:  (1.1753499799973743e-97): 1
* [misc]none:  (-1.4789327900215312e-68): 0
* [misc]none:  (1.7699153793529457e-292): 2
* [misc]none:  (-1.4258769564549258e-208): 0
* [misc]none:  (-7.278263595880122e-193): 2
* [misc]none:  (-2.126351281480013e-88): 0
* [misc]none:  (4.1993878019740277e-286): 2
* [misc]none:  (-0.00023602766722364432): 1
* [misc]none:  (-4.006330508771236e-123): 2
* [misc]none:  (1.3228826725861251e-83): 2
* [misc]none:  (-1.319380347151282e-215): 0
* [misc]none:  (1.1326695724237201e-117): 2
* [misc]none:  (2.0115496002781107e-145): 2
* [misc]none:  (-2.7349284820526125e-289): 2
* [misc]none:  (1.8862750447266752e-53): 2
* [misc]none:  (3.0319757073152243e-73): 1
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* [misc]none:  (-1.5345220119867362e-54): 0
* [misc]none:  (4.4617997614332734e-49): 1
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* [misc]none:  (5.1841759100413795e-161): 2
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* [misc]none:  (-1.9929766413300646e-81): 0
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* [misc]none:  (-1.9739730389420339e-53): 2
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* [misc]none:  (-5.652687215490466e-220): 0
* [misc]none:  (-5.689324367802329e-246): 2
* [misc]none:  (-4.3909971879838963e-305): 2
* [misc]none:  (1.1909630224861144e-308): 2
* [misc]none:  (-2.930048407292739e-56): 2
* [misc]none:  (-6.427869387517747e-307): 0
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* [misc]none:  (-1.2461956087023843e-38): 0
* [misc]none:  (3.003386221248247e-77): 1
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* [misc]none:  (1.4369290385678577e-161): 2
* [misc]none:  (-1.8419406107088546e-16): 0
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* [misc]none:  (-1.7004214918492403e-195): 2
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* [misc]none:  (4.5690448860660455e-67): 2
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* [misc]none:  (3.934156464498665e-121): 2
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* [misc]none:  (3.271929098149761e-144): 2
* [misc]none:  (3.0718166030691505e-80): 2
* [misc]none:  (6.604350361119279e-291): 2
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* [misc]none:  (-1.1587029546828107e-151): 0
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* [misc]none:  (2.6209483109511002e-99): 2
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* [misc]none:  (-4.623471500501843e-242): 2
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* [misc]none:  (-3.868414697676859e-187): 2
* [misc]none:  (-0.00034026123764188893): 4
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* [misc]none:  (2.872174301870785e-238): 2
* [misc]none:  (-7.645827496994951e-25): 0
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* [misc]none:  (-4.494398935743406e-151): 0
* [misc]none:  (2.7377399598585416e-269): 2
* [misc]none:  (1.2391428993123195e-53): 4
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* [misc]none:  (2.467422452934927e-37): 2
* [misc]none:  (5.976566162781828e-262): 3
* [misc]none:  (-4.452114039611652e-132): 2
* [misc]none:  (1.638426277474575e-287): 4
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* [misc]none:  (7.549936203493533e-264): 2
* [misc]none:  (-7.706007717334245e-133): 0
* [misc]none:  (-1.917715355857765e-213): 0
* [misc]none:  (-1.2153695779764702e-107): 0
* [misc]none:  (-5.6718708555151934e-182): 0
* [misc]none:  (-4.077199751463202e-279): 2
* [misc]none:  (1.2154965615643017e-95): 1
* [misc]none:  (1.7054753386147003e-193): 2
* [misc]none:  (1.0400546097675973e-191): 2
* [misc]none:  (-1.7028093168367145e-212): 4
* [misc]none:  (-3.61122588585932e-122): 0
* [misc]none:  (-4.1072671632900297e-249): 0
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* [misc]none:  (-4.994865514247891e-53): 0
* [misc]none:  (8.02593234133885e-135): 4
* [misc]none:  (-3.2452411716841134e-254): 2
* [misc]none:  (4.693484541613577e-225): 2
* [misc]none:  (-6.27613587070019e-241): 2
* [misc]none:  (1.488087021136329e-285): 4
* [misc]none:  (1.9700593229138827e-50): 1
* [misc]none:  (-7.343076758450515e-245): 4
* [misc]none:  (1.6501972239963874e-258): 2
* [misc]none:  (-1.9062985237621918e-44): 4
* [misc]none:  (-7.188940579708169e-182): 0
* [misc]none:  (-3.5617683302613897e-208): 0
* [misc]none:  (3.049268063166789e-38): 1
* [misc]none:  (-3.2414750156447513e-81): 0
* [misc]none:  (-9.695048812228804e-33): 0
* [misc]none:  (-3.468803990975246e-114): 0
* [misc]none:  (-1.4358426706351876e-229): 0
* [misc]none:  (-1.367452993894295e-129): 0
* [misc]none:  (3.388041199273477e-265): 2
* [misc]none:  (3.7476721237841876e-281): 2
* [misc]none:  (4.811543151950025e-33): 2
* [misc]none:  (-9.85118113779452e-207): 0
* [misc]none:  (1.7265727720717877e-65): 3
* [misc]none:  (6.525431496731668e-64): 1
* [misc]none:  (2.704077310435608e-253): 2
* [misc]none:  (2.7511202385052856e-18): 2
* [misc]none:  (3.82956155404422e-299): 2
* [misc]none:  (-8.2157022007629e-58): 1
* [misc]none:  (-8.347536812100916e-44): 0
* [misc]none:  (-2.710750607360271e-260): 0
* [misc]none:  (4.296582624822391e-200): 2
* [misc]none:  (-2.8582758774924267e-140): 2
* [misc]none:  (9.139158849230913e-305): 2
* [misc]none:  (6.683383915725252e-271): 2
* [misc]none:  (1.830961252259433e-59): 1
* [misc]none:  (-1.7614646333235536e-68): 0
* [misc]none:  (4.068667347744151e-179): 2
* [misc]none:  (-2.7764650204569527e-216): 0
* [misc]none:  (-3.81685776062912e-89): 0
* [misc]none:  (3.853952974089327e-228): 2
* [misc]none:  (-5.100815418059268e-90): 0
* [misc]none:  (6.009493492582987e-296): 2
* [misc]none:  (-1.157925061166081e-58): 0
* [misc]none:  Picked alt (λ (a) (/ 1 (/ (- (acos a)) a)))
* * * * [misc]pick:  Picked  #<alt-delta (λ (a) (/ 1 (/ (- (acos a)) a)))>
* * * [misc]progress:  localizing error
* * * [misc]progress:  generating rewritten candidates
* * * * [misc]progress:  [ 1 / 2 ] rewriting at (2 2)
* * * * [misc]progress:  [ 2 / 2 ] rewriting at (2)
* * * [misc]progress:  generating series expansions
* * * * [misc]progress:  [ 1 / 2 ] generating series at (2 2)
* [misc]approximate:  Taking taylor expansion of (/ (- (acos a)) a) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ (- (acos a)) a) in a
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]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 (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (/ (- (acos a)) 1) into (* -1 (acos a))
* [misc]taylor:  Taking taylor expansion of (/ (- (acos a)) a) in a
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]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 (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (/ (- (acos a)) 1) into (* -1 (acos a))
* [misc]backup-simplify:  Simplify (* -1 (acos a)) into (* -1 (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos a)) (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos a)) (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos a)) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos a)) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos a)) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos a)) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (* -1 (acos a)) (/ 1 a)) into (* -1 (/ (acos a) a))
* [misc]approximate:  Taking taylor expansion of (/ (- (acos (/ 1 a))) (/ 1 a)) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ (- (acos (/ 1 a))) (/ 1 a)) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]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 (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ (- (acos (/ 1 a))) 1) into (* -1 (acos (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (/ (- (acos (/ 1 a))) (/ 1 a)) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]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 (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ (- (acos (/ 1 a))) 1) into (* -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (* -1 (acos (/ 1 a))) into (* -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos (/ 1 a))) (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos (/ 1 a))) (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos (/ 1 a))) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos (/ 1 a))) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos (/ 1 a))) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos (/ 1 a))) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (* -1 (acos (/ 1 (/ 1 a)))) (/ 1 a)) into (* -1 (/ (acos a) a))
* [misc]approximate:  Taking taylor expansion of (/ (- (acos (/ 1 (- a)))) (/ 1 (- a))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ (- (acos (/ 1 (- a)))) (/ 1 (- a))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ (- (acos (/ -1 a))) -1) into (acos (/ -1 a))
* [misc]taylor:  Taking taylor expansion of (/ (- (acos (/ 1 (- a)))) (/ 1 (- a))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ (- (acos (/ -1 a))) -1) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (acos (/ -1 a)) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 -1) (+ (* (acos (/ -1 a)) (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) 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) (+ (* (acos (/ -1 a)) (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) 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) (+ (* (acos (/ -1 a)) (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 -1) (+ (* (acos (/ -1 a)) (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 -1) (+ (* (acos (/ -1 a)) (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 -1) (+ (* (acos (/ -1 a)) (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (acos (/ -1 (/ 1 (- a)))) (/ 1 (- a))) into (* -1 (/ (acos a) a))
* * * * [misc]progress:  [ 2 / 2 ] generating series at (2)
* [misc]approximate:  Taking taylor expansion of (/ 1 (/ (- (acos a)) a)) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ (- (acos a)) a)) in a
* [misc]taylor:  Taking taylor expansion of (/ (- (acos a)) a) in a
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]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 (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (/ (- (acos a)) 1) into (* -1 (acos a))
* [misc]backup-simplify:  Simplify (/ 1 (* -1 (acos a))) into (/ -1 (acos a))
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ (- (acos a)) a)) in a
* [misc]taylor:  Taking taylor expansion of (/ (- (acos a)) a) in a
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]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 (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (/ (- (acos a)) 1) into (* -1 (acos a))
* [misc]backup-simplify:  Simplify (/ 1 (* -1 (acos a))) into (/ -1 (acos a))
* [misc]backup-simplify:  Simplify (/ -1 (acos a)) into (/ -1 (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos a)) (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (* -1 (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos a)) (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos a)) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos a)) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos a)) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos a)) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ -1 (acos a)) a) into (* -1 (/ a (acos a)))
* [misc]approximate:  Taking taylor expansion of (/ 1 (/ (- (acos (/ 1 a))) (/ 1 a))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ (- (acos (/ 1 a))) (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (/ (- (acos (/ 1 a))) (/ 1 a)) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]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 (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ (- (acos (/ 1 a))) 1) into (* -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (* -1 (acos (/ 1 a)))) into (/ -1 (acos (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ (- (acos (/ 1 a))) (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (/ (- (acos (/ 1 a))) (/ 1 a)) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]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 (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ (- (acos (/ 1 a))) 1) into (* -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (* -1 (acos (/ 1 a)))) into (/ -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ -1 (acos (/ 1 a))) into (/ -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos (/ 1 a))) (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (* -1 (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos (/ 1 a))) (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos (/ 1 a))) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos (/ 1 a))) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos (/ 1 a))) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (* -1 (acos (/ 1 a))) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ -1 (acos (/ 1 (/ 1 a)))) (/ 1 (/ 1 a))) into (* -1 (/ a (acos a)))
* [misc]approximate:  Taking taylor expansion of (/ 1 (/ (- (acos (/ 1 (- a)))) (/ 1 (- a)))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ (- (acos (/ 1 (- a)))) (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (/ (- (acos (/ 1 (- a)))) (/ 1 (- a))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ (- (acos (/ -1 a))) -1) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (/ 1 (acos (/ -1 a))) into (/ 1 (acos (/ -1 a)))
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ (- (acos (/ 1 (- a)))) (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (/ (- (acos (/ 1 (- a)))) (/ 1 (- a))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]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 (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ (- (acos (/ -1 a))) -1) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (/ 1 (acos (/ -1 a))) into (/ 1 (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (acos (/ -1 a))) into (/ 1 (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 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) (+ (* (acos (/ -1 a)) (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (acos (/ -1 a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]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) (+ (* (acos (/ -1 a)) (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]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) (+ (* (acos (/ -1 a)) (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 -1) (+ (* (acos (/ -1 a)) (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 -1) (+ (* (acos (/ -1 a)) (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 -1) (+ (* (acos (/ -1 a)) (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ 1 (acos (/ -1 (/ 1 (- a))))) (/ 1 (/ 1 (- a)))) into (* -1 (/ a (acos a)))
* * * [misc]progress:  simplifying candidates
* * * * [misc]progress:  [ 1 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (pow (/ (- (acos a)) a) 1)))>
* * * * [misc]progress:  [ 2 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (exp (log (/ (- (acos a)) a)))))>
* [enter]simplify:  Simplifying (log (/ (- (acos a)) a))
* * [misc]simplify:  iters left: 6 (5 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* * [misc]simplify:  iters left: 4 (12 enodes)
* * [misc]simplify:  iters left: 3 (13 enodes)
* [exit]simplify:  Simplified to (log (/ (- (acos a)) a))
* [exit]simplify:  Simplified to (log (/ (- (acos a)) a))
* * * * [misc]progress:  [ 3 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (log (exp (/ (- (acos a)) a)))))>
* [enter]simplify:  Simplifying (exp (/ (- (acos a)) a))
* * [misc]simplify:  iters left: 6 (5 enodes)
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* * [misc]simplify:  iters left: 3 (12 enodes)
* [exit]simplify:  Simplified to (exp (/ (- (acos a)) a))
* [exit]simplify:  Simplified to (exp (/ (- (acos a)) a))
* * * * [misc]progress:  [ 4 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (* (cbrt (/ (- (acos a)) a)) (cbrt (/ (- (acos a)) a))) (cbrt (/ (- (acos a)) a)))))>
* [enter]simplify:  Simplifying (* (cbrt (/ (- (acos a)) a)) (cbrt (/ (- (acos a)) a)))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* [exit]simplify:  Simplified to (* (cbrt (/ (- (acos a)) a)) (cbrt (/ (- (acos a)) a)))
* [exit]simplify:  Simplified to (* (cbrt (/ (- (acos a)) a)) (cbrt (/ (- (acos a)) a)))
* [enter]simplify:  Simplifying (cbrt (/ (- (acos a)) a))
* * [misc]simplify:  iters left: 6 (5 enodes)
* * [misc]simplify:  iters left: 5 (7 enodes)
* [exit]simplify:  Simplified to (cbrt (/ (- (acos a)) a))
* [exit]simplify:  Simplified to (cbrt (/ (- (acos a)) a))
* * * * [misc]progress:  [ 5 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (cbrt (* (* (/ (- (acos a)) a) (/ (- (acos a)) a)) (/ (- (acos a)) a)))))>
* [enter]simplify:  Simplifying (* (* (/ (- (acos a)) a) (/ (- (acos a)) a)) (/ (- (acos a)) a))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* * [misc]simplify:  iters left: 4 (54 enodes)
* * [misc]simplify:  iters left: 3 (182 enodes)
* * [misc]simplify:  iters left: 2 (486 enodes)
* [exit]simplify:  Simplified to (/ (* (/ (acos a) a) (/ (acos a) a)) (/ a (- (acos a))))
* [exit]simplify:  Simplified to (/ (* (/ (acos a) a) (/ (acos a) a)) (/ a (- (acos a))))
* * * * [misc]progress:  [ 6 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (sqrt (/ (- (acos a)) a)) (sqrt (/ (- (acos a)) a)))))>
* [enter]simplify:  Simplifying (sqrt (/ (- (acos a)) a))
* * [misc]simplify:  iters left: 6 (5 enodes)
* * [misc]simplify:  iters left: 5 (7 enodes)
* [exit]simplify:  Simplified to (sqrt (/ (- (acos a)) a))
* [exit]simplify:  Simplified to (sqrt (/ (- (acos a)) a))
* [enter]simplify:  Simplifying (sqrt (/ (- (acos a)) a))
* * [misc]simplify:  iters left: 6 (5 enodes)
* * [misc]simplify:  iters left: 5 (7 enodes)
* [exit]simplify:  Simplified to (sqrt (/ (- (acos a)) a))
* [exit]simplify:  Simplified to (sqrt (/ (- (acos a)) a))
* * * * [misc]progress:  [ 7 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ (- (- (acos a))) (- a))))>
* [enter]simplify:  Simplifying (- (- (acos a)))
* * [misc]simplify:  iters left: 5 (4 enodes)
* [exit]simplify:  Simplified to (acos a)
* [exit]simplify:  Simplified to (acos a)
* [enter]simplify:  Simplifying (- a)
* * [misc]simplify:  iters left: 2 (2 enodes)
* [exit]simplify:  Simplified to (- a)
* [exit]simplify:  Simplified to (- a)
* * * * [misc]progress:  [ 8 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (- (/ 0 a) (/ (acos a) a))))>
* [enter]simplify:  Simplifying (/ 0 a)
* * [misc]simplify:  iters left: 2 (3 enodes)
* [exit]simplify:  Simplified to 0
* [exit]simplify:  Simplified to 0
* [enter]simplify:  Simplifying (/ (acos a) a)
* * [misc]simplify:  iters left: 3 (3 enodes)
* [exit]simplify:  Simplified to (/ (acos a) a)
* [exit]simplify:  Simplified to (/ (acos a) a)
* * * * [misc]progress:  [ 9 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* 1 (/ (- (acos a)) a))))>
* * * * [misc]progress:  [ 10 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (- (acos 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:  [ 11 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ 1 (/ a (- (acos a))))))>
* [enter]simplify:  Simplifying (/ a (- (acos a)))
* * [misc]simplify:  iters left: 5 (4 enodes)
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* * * * [misc]progress:  [ 12 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (- (/ (acos a) a))))>
* [enter]simplify:  Simplifying (/ (acos a) a)
* * [misc]simplify:  iters left: 3 (3 enodes)
* [exit]simplify:  Simplified to (/ (acos a) a)
* [exit]simplify:  Simplified to (/ (acos a) a)
* * * * [misc]progress:  [ 13 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ (* (cbrt (- (acos a))) (cbrt (- (acos a)))) (/ a (cbrt (- (acos a)))))))>
* [enter]simplify:  Simplifying (/ a (cbrt (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (/ a (cbrt (- (acos a))))
* [exit]simplify:  Simplified to (/ a (cbrt (- (acos a))))
* * * * [misc]progress:  [ 14 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ (sqrt (- (acos a))) (/ a (sqrt (- (acos a)))))))>
* [enter]simplify:  Simplifying (/ a (sqrt (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (/ a (sqrt (- (acos a))))
* [exit]simplify:  Simplified to (/ a (sqrt (- (acos a))))
* * * * [misc]progress:  [ 15 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ 1 (/ a (- (acos a))))))>
* [enter]simplify:  Simplifying (/ a (- (acos a)))
* * [misc]simplify:  iters left: 5 (4 enodes)
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* * * * [misc]progress:  [ 16 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ -1 (/ a (acos a)))))>
* [enter]simplify:  Simplifying (/ a (acos a))
* * [misc]simplify:  iters left: 3 (3 enodes)
* [exit]simplify:  Simplified to (/ a (acos a))
* [exit]simplify:  Simplified to (/ a (acos a))
* * * * [misc]progress:  [ 17 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ (- (* (cbrt (acos a)) (cbrt (acos a)))) (/ a (cbrt (acos a))))))>
* [enter]simplify:  Simplifying (/ a (cbrt (acos a)))
* * [misc]simplify:  iters left: 4 (4 enodes)
* [exit]simplify:  Simplified to (/ a (cbrt (acos a)))
* [exit]simplify:  Simplified to (/ a (cbrt (acos a)))
* * * * [misc]progress:  [ 18 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ (- (sqrt (acos a))) (/ a (sqrt (acos a))))))>
* [enter]simplify:  Simplifying (/ a (sqrt (acos a)))
* * [misc]simplify:  iters left: 4 (4 enodes)
* [exit]simplify:  Simplified to (/ a (sqrt (acos a)))
* [exit]simplify:  Simplified to (/ a (sqrt (acos a)))
* * * * [misc]progress:  [ 19 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ (- 1) (/ a (acos a)))))>
* [enter]simplify:  Simplifying (/ a (acos a))
* * [misc]simplify:  iters left: 3 (3 enodes)
* [exit]simplify:  Simplified to (/ a (acos a))
* [exit]simplify:  Simplified to (/ a (acos a))
* * * * [misc]progress:  [ 20 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ (* (cbrt (acos a)) (cbrt (acos a))) (/ a (- (cbrt (acos a)))))))>
* [enter]simplify:  Simplifying (/ a (- (cbrt (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (/ a (- (cbrt (acos a))))
* [exit]simplify:  Simplified to (/ a (- (cbrt (acos a))))
* * * * [misc]progress:  [ 21 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ (sqrt (acos a)) (/ a (- (sqrt (acos a)))))))>
* [enter]simplify:  Simplifying (/ a (- (sqrt (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (/ a (- (sqrt (acos a))))
* [exit]simplify:  Simplified to (/ a (- (sqrt (acos a))))
* * * * [misc]progress:  [ 22 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ 1 (/ a (- (acos a))))))>
* [enter]simplify:  Simplifying (/ a (- (acos a)))
* * [misc]simplify:  iters left: 5 (4 enodes)
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* * * * [misc]progress:  [ 23 / 46 ] simplifiying candidate #<alt-delta (λ (a) (pow (/ (- (acos a)) a) -1))>
* * * * [misc]progress:  [ 24 / 46 ] simplifiying candidate #<alt-delta (λ (a) (pow (/ (- (acos a)) a) (- 1)))>
* [enter]simplify:  Simplifying (- 1)
* * [misc]simplify:  iters left: 2 (2 enodes)
* * [misc]simplify:  iters left: 1 (4 enodes)
* [exit]simplify:  Simplified to (- 1)
* [exit]simplify:  Simplified to (- 1)
* * * * [misc]progress:  [ 25 / 46 ] simplifiying candidate #<alt-delta (λ (a) (pow (/ 1 (/ (- (acos a)) a)) 1))>
* * * * [misc]progress:  [ 26 / 46 ] simplifiying candidate #<alt-delta (λ (a) (exp (- (log (/ (- (acos a)) a)))))>
* [enter]simplify:  Simplifying (- (log (/ (- (acos a)) a)))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* * [misc]simplify:  iters left: 3 (17 enodes)
* * [misc]simplify:  iters left: 2 (22 enodes)
* * [misc]simplify:  iters left: 1 (28 enodes)
* [exit]simplify:  Simplified to (- (log a) (log (- (acos a))))
* [exit]simplify:  Simplified to (- (log a) (log (- (acos a))))
* * * * [misc]progress:  [ 27 / 46 ] simplifiying candidate #<alt-delta (λ (a) (exp (log (/ 1 (/ (- (acos a)) a)))))>
* [enter]simplify:  Simplifying (log (/ 1 (/ (- (acos a)) a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (17 enodes)
* * [misc]simplify:  iters left: 4 (26 enodes)
* * [misc]simplify:  iters left: 3 (42 enodes)
* * [misc]simplify:  iters left: 2 (83 enodes)
* * [misc]simplify:  iters left: 1 (279 enodes)
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* * * * [misc]progress:  [ 28 / 46 ] simplifiying candidate #<alt-delta (λ (a) (log (exp (/ 1 (/ (- (acos a)) a)))))>
* [enter]simplify:  Simplifying (exp (/ 1 (/ (- (acos a)) a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (18 enodes)
* * [misc]simplify:  iters left: 3 (20 enodes)
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* * * * [misc]progress:  [ 29 / 46 ] simplifiying candidate #<alt-delta (λ (a) (* (* (cbrt (/ 1 (/ (- (acos a)) a))) (cbrt (/ 1 (/ (- (acos a)) a)))) (cbrt (/ 1 (/ (- (acos a)) a)))))>
* [enter]simplify:  Simplifying (* (cbrt (/ 1 (/ (- (acos a)) a))) (cbrt (/ 1 (/ (- (acos a)) a))))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* * [misc]simplify:  iters left: 4 (17 enodes)
* * [misc]simplify:  iters left: 3 (19 enodes)
* [exit]simplify:  Simplified to (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a)))))
* [enter]simplify:  Simplifying (cbrt (/ 1 (/ (- (acos a)) a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (16 enodes)
* * [misc]simplify:  iters left: 3 (18 enodes)
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 30 / 46 ] simplifiying candidate #<alt-delta (λ (a) (cbrt (* (* (/ 1 (/ (- (acos a)) a)) (/ 1 (/ (- (acos a)) a))) (/ 1 (/ (- (acos a)) a)))))>
* [enter]simplify:  Simplifying (* (* (/ 1 (/ (- (acos a)) a)) (/ 1 (/ (- (acos a)) a))) (/ 1 (/ (- (acos a)) a)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (21 enodes)
* * [misc]simplify:  iters left: 4 (47 enodes)
* * [misc]simplify:  iters left: 3 (131 enodes)
* * [misc]simplify:  iters left: 2 (309 enodes)
* [exit]simplify:  Simplified to (/ (/ a (- (acos a))) (* (/ (acos a) a) (/ (acos a) a)))
* [exit]simplify:  Simplified to (/ (/ a (- (acos a))) (* (/ (acos a) a) (/ (acos a) a)))
* * * * [misc]progress:  [ 31 / 46 ] simplifiying candidate #<alt-delta (λ (a) (* (sqrt (/ 1 (/ (- (acos a)) a))) (sqrt (/ 1 (/ (- (acos a)) a)))))>
* [enter]simplify:  Simplifying (sqrt (/ 1 (/ (- (acos a)) a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (16 enodes)
* * [misc]simplify:  iters left: 3 (18 enodes)
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [enter]simplify:  Simplifying (sqrt (/ 1 (/ (- (acos a)) a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (16 enodes)
* * [misc]simplify:  iters left: 3 (18 enodes)
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 32 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ (- 1) (- (/ (- (acos a)) a))))>
* [enter]simplify:  Simplifying (- 1)
* * [misc]simplify:  iters left: 2 (2 enodes)
* * [misc]simplify:  iters left: 1 (4 enodes)
* [exit]simplify:  Simplified to (- 1)
* [exit]simplify:  Simplified to (- 1)
* [enter]simplify:  Simplifying (- (/ (- (acos a)) a))
* * [misc]simplify:  iters left: 6 (5 enodes)
* * [misc]simplify:  iters left: 5 (9 enodes)
* [exit]simplify:  Simplified to (/ (acos a) a)
* [exit]simplify:  Simplified to (/ (acos a) a)
* * * * [misc]progress:  [ 33 / 46 ] simplifiying candidate #<alt-delta (λ (a) (* 1 (/ 1 (/ (- (acos a)) a))))>
* * * * [misc]progress:  [ 34 / 46 ] simplifiying candidate #<alt-delta (λ (a) (* 1 (/ 1 (/ (- (acos a)) a))))>
* [enter]simplify:  Simplifying (/ 1 (/ (- (acos a)) a))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (15 enodes)
* * [misc]simplify:  iters left: 3 (17 enodes)
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* * * * [misc]progress:  [ 35 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ (/ (- (acos a)) a) 1)))>
* [enter]simplify:  Simplifying (/ (/ (- (acos a)) a) 1)
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (16 enodes)
* * [misc]simplify:  iters left: 3 (18 enodes)
* [exit]simplify:  Simplified to (- (/ (acos a) a))
* [exit]simplify:  Simplified to (- (/ (acos a) a))
* * * * [misc]progress:  [ 36 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ 1 (* (cbrt (/ (- (acos a)) a)) (cbrt (/ (- (acos a)) a)))) (cbrt (/ (- (acos a)) a))))>
* [enter]simplify:  Simplifying (/ 1 (* (cbrt (/ (- (acos a)) a)) (cbrt (/ (- (acos a)) a))))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 (cbrt (/ (- (acos a)) a))) (cbrt (/ (- (acos a)) a)))
* [exit]simplify:  Simplified to (/ (/ 1 (cbrt (/ (- (acos a)) a))) (cbrt (/ (- (acos a)) a)))
* * * * [misc]progress:  [ 37 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ 1 (sqrt (/ (- (acos a)) a))) (sqrt (/ (- (acos a)) a))))>
* [enter]simplify:  Simplifying (/ 1 (sqrt (/ (- (acos a)) a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* [exit]simplify:  Simplified to (/ 1 (sqrt (- (/ (acos a) a))))
* [exit]simplify:  Simplified to (/ 1 (sqrt (- (/ (acos a) a))))
* * * * [misc]progress:  [ 38 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ 1 1) (/ (- (acos a)) a)))>
* [enter]simplify:  Simplifying (/ 1 1)
* * [misc]simplify:  iters left: 2 (2 enodes)
* * [misc]simplify:  iters left: 1 (4 enodes)
* [exit]simplify:  Simplified to 1
* [exit]simplify:  Simplified to 1
* * * * [misc]progress:  [ 39 / 46 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ 1 (- (acos a))) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ 1 (- (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (7 enodes)
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* * * * [misc]progress:  [ 40 / 46 ] simplifiying candidate #<alt-delta (λ (a) (* (/ 1 (- (acos a))) a))>
* [enter]simplify:  Simplifying (/ 1 (- (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (7 enodes)
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* * * * [misc]progress:  [ 41 / 46 ] simplifiying candidate #<alt-event (λ (a) (/ 1 (* -1 (/ (acos a) a))))>
* [enter]simplify:  Simplifying (/ 1 (* -1 (/ (acos a) a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* * [misc]simplify:  iters left: 4 (24 enodes)
* * [misc]simplify:  iters left: 3 (35 enodes)
* * [misc]simplify:  iters left: 2 (49 enodes)
* * [misc]simplify:  iters left: 1 (60 enodes)
* [exit]simplify:  Simplified to (/ (/ a -1) (acos a))
* * * * [misc]progress:  [ 42 / 46 ] simplifiying candidate #<alt-event (λ (a) (/ 1 (* -1 (/ (acos a) a))))>
* [enter]simplify:  Simplifying (/ 1 (* -1 (/ (acos a) a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* * [misc]simplify:  iters left: 4 (24 enodes)
* * [misc]simplify:  iters left: 3 (35 enodes)
* * [misc]simplify:  iters left: 2 (49 enodes)
* * [misc]simplify:  iters left: 1 (60 enodes)
* [exit]simplify:  Simplified to (/ (/ a -1) (acos a))
* * * * [misc]progress:  [ 43 / 46 ] simplifiying candidate #<alt-event (λ (a) (/ 1 (* -1 (/ (acos a) a))))>
* [enter]simplify:  Simplifying (/ 1 (* -1 (/ (acos a) a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* * [misc]simplify:  iters left: 4 (24 enodes)
* * [misc]simplify:  iters left: 3 (35 enodes)
* * [misc]simplify:  iters left: 2 (49 enodes)
* * [misc]simplify:  iters left: 1 (60 enodes)
* [exit]simplify:  Simplified to (/ (/ a -1) (acos a))
* * * * [misc]progress:  [ 44 / 46 ] simplifiying candidate #<alt-event (λ (a) (* -1 (/ a (acos a))))>
* [enter]simplify:  Simplifying (* -1 (/ a (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* * [misc]simplify:  iters left: 3 (14 enodes)
* * [misc]simplify:  iters left: 2 (16 enodes)
* * [misc]simplify:  iters left: 1 (18 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 45 / 46 ] simplifiying candidate #<alt-event (λ (a) (* -1 (/ a (acos a))))>
* [enter]simplify:  Simplifying (* -1 (/ a (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* * [misc]simplify:  iters left: 3 (14 enodes)
* * [misc]simplify:  iters left: 2 (16 enodes)
* * [misc]simplify:  iters left: 1 (18 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 46 / 46 ] simplifiying candidate #<alt-event (λ (a) (* -1 (/ a (acos a))))>
* [enter]simplify:  Simplifying (* -1 (/ a (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* * [misc]simplify:  iters left: 3 (14 enodes)
* * [misc]simplify:  iters left: 2 (16 enodes)
* * [misc]simplify:  iters left: 1 (18 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * [misc]progress:  adding candidates to table
* * [misc]progress:  iteration 3 / 4
* * * [misc]progress:  picking best candidate
* [misc]none:  Fresh alts: 8
* [misc]none:  All alts: 10
* [misc]none:  Fresh alt: (λ (a) (* (sqrt (/ a (- (acos a)))) (sqrt (/ a (- (acos a))))))
* [misc]none:  Fresh alt: (λ (a) (cbrt (/ (* (/ a (acos a)) (/ a (acos a))) (/ (- (acos a)) a))))
* [misc]none:  Fresh alt: (λ (a) (/ (/ 1 (- (acos a))) (/ 1 a)))
* [misc]none:  Non-fresh alt: (λ (a) (/ a (- (acos a))))
* [misc]none:  Fresh alt: (λ (a) (/ 1 (* (- (acos a)) (/ 1 a))))
* [misc]none:  Fresh alt: (λ (a) (* (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a))))) (cbrt (/ a (- (acos a))))))
* [misc]none:  Non-fresh alt: (λ (a) (/ 1 (/ (- (acos a)) a)))
* [misc]none:  Fresh alt: (λ (a) (/ 1 (cbrt (/ (* (/ (acos a) a) (/ (acos a) a)) (/ a (- (acos a)))))))
* [misc]none:  Fresh alt: (λ (a) (/ (/ 1 (sqrt (/ (- (acos a)) a))) (sqrt (/ (- (acos a)) a))))
* [misc]none:  Fresh alt: (λ (a) (/ (/ 1 (* (cbrt (/ (- (acos a)) a)) (cbrt (/ (- (acos a)) a)))) (cbrt (/ (- (acos a)) a))))
* [misc]none:  Fresh alt indexes
* [misc]none:  (λ (a) (* (sqrt (/ a (- (acos a)))) (sqrt (/ a (- (acos a)))))): 0
* [misc]none:  (λ (a) (cbrt (/ (* (/ a (acos a)) (/ a (acos a))) (/ (- (acos a)) a)))): 1
* [misc]none:  (λ (a) (/ (/ 1 (- (acos a))) (/ 1 a))): 2
* [misc]none:  (λ (a) (/ 1 (* (- (acos a)) (/ 1 a)))): 3
* [misc]none:  (λ (a) (* (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a))))) (cbrt (/ a (- (acos a)))))): 4
* [misc]none:  (λ (a) (/ 1 (cbrt (/ (* (/ (acos a) a) (/ (acos a) a)) (/ a (- (acos a))))))): 5
* [misc]none:  (λ (a) (/ (/ 1 (sqrt (/ (- (acos a)) a))) (sqrt (/ (- (acos a)) a)))): 6
* [misc]none:  (λ (a) (/ (/ 1 (* (cbrt (/ (- (acos a)) a)) (cbrt (/ (- (acos a)) a)))) (cbrt (/ (- (acos a)) a)))): 7
* [misc]none:  Best fresh alt per point
* [misc]none:  (-1.5896307370952378e-24): 0
* [misc]none:  (-2.381600975603585e-126): 0
* [misc]none:  (1.1078263738557817e-173): 2
* [misc]none:  (-4.8901493658439805e-257): 0
* [misc]none:  (-1.086848415384618e-149): 2
* [misc]none:  (1.5400917624685415e-295): 2
* [misc]none:  (1.389009890486587e-304): 2
* [misc]none:  (-0.07645769362495446): 0
* [misc]none:  (3.5836534998638334e-135): 2
* [misc]none:  (5.874263446950659e-136): 2
* [misc]none:  (-4.6360422655231974e-215): 0
* [misc]none:  (1.3639040980897921e-39): 1
* [misc]none:  (2.4497413502625085e-301): 2
* [misc]none:  (1.9836536473017196e-256): 2
* [misc]none:  (2.7441626242764893e-109): 2
* [misc]none:  (-1.2184545386686845e-292): 0
* [misc]none:  (-4.164360616471795e-297): 0
* [misc]none:  (1.1330111314315052e-297): 2
* [misc]none:  (6.333415879143823e-203): 2
* [misc]none:  (-1.1408068010697186e-09): 0
* [misc]none:  (6.534790094984563e-249): 2
* [misc]none:  (-6.136769236604219e-245): 0
* [misc]none:  (-1.5184287807448694e-256): 0
* [misc]none:  (9.20482191500962e-294): 3
* [misc]none:  (6.826390525782658e-164): 3
* [misc]none:  (1.4517955555700533e-57): 1
* [misc]none:  (-6.624186711279531e-158): 2
* [misc]none:  (-2.28428829200312e-74): 1
* [misc]none:  (6.319063013887454e-198): 7
* [misc]none:  (4.013577168037153e-101): 2
* [misc]none:  (-5.9357220490245764e-15): 0
* [misc]none:  (-1.423411965411883e-294): 0
* [misc]none:  (1.5130621813503031e-75): 5
* [misc]none:  (-3.3795898713138266e-300): 0
* [misc]none:  (-8.397564680171817e-171): 0
* [misc]none:  (-5.030258942894069e-286): 0
* [misc]none:  (7.700703882618771e-282): 3
* [misc]none:  (-4.182069781177431e-143): 6
* [misc]none:  (3.8976396927163173e-162): 2
* [misc]none:  (-4.334942407090635e-248): 0
* [misc]none:  (-5.434332993935807e-16): 2
* [misc]none:  (9.422179697047065e-164): 2
* [misc]none:  (2.0152844845402166e-297): 7
* [misc]none:  (8.604490187894414e-112): 2
* [misc]none:  (1.1753499799973743e-97): 1
* [misc]none:  (-1.4789327900215312e-68): 0
* [misc]none:  (1.7699153793529457e-292): 2
* [misc]none:  (-1.4258769564549258e-208): 0
* [misc]none:  (-7.278263595880122e-193): 2
* [misc]none:  (-2.126351281480013e-88): 0
* [misc]none:  (4.1993878019740277e-286): 4
* [misc]none:  (-0.00023602766722364432): 3
* [misc]none:  (-4.006330508771236e-123): 2
* [misc]none:  (1.3228826725861251e-83): 2
* [misc]none:  (-1.319380347151282e-215): 0
* [misc]none:  (1.1326695724237201e-117): 2
* [misc]none:  (2.0115496002781107e-145): 2
* [misc]none:  (-2.7349284820526125e-289): 2
* [misc]none:  (1.8862750447266752e-53): 2
* [misc]none:  (3.0319757073152243e-73): 1
* [misc]none:  (3.46946296425657e-151): 2
* [misc]none:  (-1.5345220119867362e-54): 0
* [misc]none:  (4.4617997614332734e-49): 1
* [misc]none:  (-4.576042298933677e-291): 2
* [misc]none:  (5.1841759100413795e-161): 2
* [misc]none:  (6.821311827045434e-30): 1
* [misc]none:  (-1.9929766413300646e-81): 0
* [misc]none:  (2.6830861914889714e-191): 2
* [misc]none:  (-1.9739730389420339e-53): 0
* [misc]none:  (-1.3992932767813926e-176): 0
* [misc]none:  (2.5419285128257477e-50): 1
* [misc]none:  (-5.652687215490466e-220): 0
* [misc]none:  (-5.689324367802329e-246): 2
* [misc]none:  (-4.3909971879838963e-305): 2
* [misc]none:  (1.1909630224861144e-308): 2
* [misc]none:  (-2.930048407292739e-56): 2
* [misc]none:  (-6.427869387517747e-307): 0
* [misc]none:  (9.212199844523645e-229): 2
* [misc]none:  (-1.2461956087023843e-38): 0
* [misc]none:  (3.003386221248247e-77): 1
* [misc]none:  (7.613990227232114e-101): 2
* [misc]none:  (1.4369290385678577e-161): 7
* [misc]none:  (-1.8419406107088546e-16): 0
* [misc]none:  (2.3887736368263357e-225): 3
* [misc]none:  (-6.168974554229468e-230): 3
* [misc]none:  (2.116370076668309e-191): 3
* [misc]none:  (-1.1883563404969162e-50): 2
* [misc]none:  (-6.903597812238514e-236): 0
* [misc]none:  (1.1142271720543672e-206): 4
* [misc]none:  (2.8003106991789085e-69): 4
* [misc]none:  (-3.912955183972641e-245): 0
* [misc]none:  (5.515506992492392e-277): 2
* [misc]none:  (2.595646488837273e-219): 2
* [misc]none:  (-1.0403226659956264e-12): 1
* [misc]none:  (3.108236652528406e-297): 2
* [misc]none:  (7.181266914182018e-165): 2
* [misc]none:  (-4.054936013280633e-214): 2
* [misc]none:  (-5.931595524156171e-137): 3
* [misc]none:  (1.1353295840851429e-96): 5
* [misc]none:  (-1.9487210599798821e-283): 2
* [misc]none:  (2.347768069961951e-79): 2
* [misc]none:  (7.595028648060239e-286): 3
* [misc]none:  (-1.7004214918492403e-195): 2
* [misc]none:  (-2.9451802210491167e-226): 3
* [misc]none:  (4.5690448860660455e-67): 2
* [misc]none:  (-4.213852294319719e-45): 0
* [misc]none:  (1.0832199703372366e-253): 2
* [misc]none:  (-1.028098363509014e-206): 0
* [misc]none:  (3.934156464498665e-121): 2
* [misc]none:  (-2.030003858554109e-299): 2
* [misc]none:  (0.0005921945720183679): 1
* [misc]none:  (2.8115284450926948e-120): 2
* [misc]none:  (-1.4914047823213697e-303): 6
* [misc]none:  (-5.51972060484157e-206): 0
* [misc]none:  (-2.222084476892157e-27): 1
* [misc]none:  (2.9394468165964015e-257): 2
* [misc]none:  (3.271929098149761e-144): 2
* [misc]none:  (3.0718166030691505e-80): 2
* [misc]none:  (6.604350361119279e-291): 2
* [misc]none:  (3.861477555295976e-66): 1
* [misc]none:  (7.835819247789118e-215): 2
* [misc]none:  (-1.7331826939437403e-32): 1
* [misc]none:  (1.5041078345043152e-175): 2
* [misc]none:  (-7.5213132710662e-74): 0
* [misc]none:  (3.0457736919219457e-222): 2
* [misc]none:  (-1.1587029546828107e-151): 0
* [misc]none:  (-2.4216252182489007e-26): 1
* [misc]none:  (-1.4390028162741748e-46): 0
* [misc]none:  (8.124998850854922e-91): 1
* [misc]none:  (-5.655718042216706e-88): 0
* [misc]none:  (3.19314088639968e-300): 2
* [misc]none:  (-2.460746881557577e-120): 2
* [misc]none:  (2.6209483109511002e-99): 2
* [misc]none:  (-1.184307734105162e-152): 2
* [misc]none:  (3.9436987604242746e-188): 2
* [misc]none:  (1.2987545615858837e-229): 2
* [misc]none:  (1.3556558330338219e-279): 2
* [misc]none:  (5.600091178152213e-210): 2
* [misc]none:  (7.360949206952843e-212): 3
* [misc]none:  (-4.623471500501843e-242): 2
* [misc]none:  (2.924154450481512e-86): 1
* [misc]none:  (1.1766044207630259e-195): 2
* [misc]none:  (-0.014763539181529813): 0
* [misc]none:  (-2.5295585364629736e-253): 0
* [misc]none:  (3.125863179986306e-134): 2
* [misc]none:  (-8.950192398328319e-216): 0
* [misc]none:  (-1.7783570294902284e-29): 0
* [misc]none:  (4.319230432601922e-289): 3
* [misc]none:  (6.0910080487156845e-145): 2
* [misc]none:  (-3.2028793163485514e-267): 0
* [misc]none:  (-5.767560760391122e-80): 0
* [misc]none:  (3.087465078472461e-297): 2
* [misc]none:  (1.8641835944090122e-68): 5
* [misc]none:  (2.9298628929536803e-07): 2
* [misc]none:  (2.112352033422511e-76): 1
* [misc]none:  (-1.4985268459995148e-46): 0
* [misc]none:  (5.682432409793209e-103): 2
* [misc]none:  (3.763740454339611e-154): 2
* [misc]none:  (2.337605690906294e-85): 3
* [misc]none:  (-4.885442056107934e-227): 0
* [misc]none:  (-3.356284453668777e-114): 0
* [misc]none:  (1.939469755263449e-274): 2
* [misc]none:  (2.0558821145728443e-244): 2
* [misc]none:  (7.118304679887613e-64): 3
* [misc]none:  (2.3966615634258388e-54): 1
* [misc]none:  (-5.628195320915282e-68): 1
* [misc]none:  (-3.2549065076282373e-223): 6
* [misc]none:  (-2.9085637996437565e-109): 0
* [misc]none:  (-6.751934028520499e-153): 2
* [misc]none:  (1.0609576781328471e-51): 1
* [misc]none:  (-2.9598382711916395e-27): 0
* [misc]none:  (1.9357477509582754e-93): 7
* [misc]none:  (-3.868414697676859e-187): 2
* [misc]none:  (-0.00034026123764188893): 7
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* [misc]none:  (4.296582624822391e-200): 2
* [misc]none:  (-2.8582758774924267e-140): 3
* [misc]none:  (9.139158849230913e-305): 2
* [misc]none:  (6.683383915725252e-271): 2
* [misc]none:  (1.830961252259433e-59): 1
* [misc]none:  (-1.7614646333235536e-68): 0
* [misc]none:  (4.068667347744151e-179): 2
* [misc]none:  (-2.7764650204569527e-216): 0
* [misc]none:  (-3.81685776062912e-89): 0
* [misc]none:  (3.853952974089327e-228): 2
* [misc]none:  (-5.100815418059268e-90): 0
* [misc]none:  (6.009493492582987e-296): 2
* [misc]none:  (-1.157925061166081e-58): 0
* [misc]none:  Picked alt (λ (a) (/ 1 (* (- (acos a)) (/ 1 a))))
* * * * [misc]pick:  Picked  #<alt-delta (λ (a) (/ 1 (* (- (acos a)) (/ 1 a))))>
* * * [misc]progress:  localizing error
* * * [misc]progress:  generating rewritten candidates
* * * * [misc]progress:  [ 1 / 2 ] rewriting at (2 2)
* * * * [misc]progress:  [ 2 / 2 ] rewriting at (2)
* * * [misc]progress:  generating series expansions
* * * * [misc]progress:  [ 1 / 2 ] generating series at (2 2)
* [misc]approximate:  Taking taylor expansion of (* (- (acos a)) (/ 1 a)) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (* (- (acos a)) (/ 1 a)) in a
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]taylor:  Taking taylor expansion of (/ 1 a) in a
* [misc]taylor:  Taking taylor expansion of a in a
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify 1 into 1
* [misc]backup-simplify:  Simplify (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (- (acos a)) (/ 1 a)) in a
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]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 (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (* (- (acos a)) 1) into (* -1 (acos a))
* [misc]backup-simplify:  Simplify (* -1 (acos a)) into (* -1 (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos a)) 0) (* 0 1)) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos a)) 0) (+ (* 0 0) (* 0 1))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos a)) 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos a)) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos a)) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos a)) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (* -1 (acos a)) (/ 1 a)) into (* -1 (/ (acos a) a))
* [misc]approximate:  Taking taylor expansion of (* (- (acos (/ 1 a))) (/ 1 (/ 1 a))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (* (- (acos (/ 1 a))) (/ 1 (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ 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 (/ 1 1) into 1
* [misc]taylor:  Taking taylor expansion of (* (- (acos (/ 1 a))) (/ 1 (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ 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 (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (* (- (acos (/ 1 a))) 1) into (* -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (* -1 (acos (/ 1 a))) into (* -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ 1 a))) 0) (* 0 1)) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ 1 a))) 0) (+ (* 0 0) (* 0 1))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ 1 a))) 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ 1 a))) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ 1 a))) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ 1 a))) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (* -1 (acos (/ 1 (/ 1 a)))) (/ 1 a)) into (* -1 (/ (acos a) a))
* [misc]approximate:  Taking taylor expansion of (* (- (acos (/ 1 (- a)))) (/ 1 (/ 1 (- a)))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (* (- (acos (/ 1 (- a)))) (/ 1 (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ 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 (/ 1 -1) into -1
* [misc]taylor:  Taking taylor expansion of (* (- (acos (/ 1 (- a)))) (/ 1 (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ 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 (/ 1 -1) into -1
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (* (- (acos (/ -1 a))) -1) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (acos (/ -1 a)) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ -1 a))) 0) (* 0 -1)) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ -1 a))) 0) (+ (* 0 0) (* 0 -1))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ -1 a))) 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ -1 a))) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ -1 a))) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ -1 a))) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (acos (/ -1 (/ 1 (- a)))) (/ 1 (- a))) into (* -1 (/ (acos a) a))
* * * * [misc]progress:  [ 2 / 2 ] generating series at (2)
* [misc]approximate:  Taking taylor expansion of (/ 1 (* (- (acos a)) (/ 1 a))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ 1 (* (- (acos a)) (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (* (- (acos a)) (/ 1 a)) in a
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]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 (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (* (- (acos a)) 1) into (* -1 (acos a))
* [misc]backup-simplify:  Simplify (/ 1 (* -1 (acos a))) into (/ -1 (acos a))
* [misc]taylor:  Taking taylor expansion of (/ 1 (* (- (acos a)) (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (* (- (acos a)) (/ 1 a)) in a
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]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 (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (* (- (acos a)) 1) into (* -1 (acos a))
* [misc]backup-simplify:  Simplify (/ 1 (* -1 (acos a))) into (/ -1 (acos a))
* [misc]backup-simplify:  Simplify (/ -1 (acos a)) into (/ -1 (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos a)) 0) (* 0 1)) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (* -1 (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos a)) 0) (+ (* 0 0) (* 0 1))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos a)) 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos a)) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos a)) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos a)) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))) (* 0 (/ 0 (* -1 (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ -1 (acos a)) a) into (* -1 (/ a (acos a)))
* [misc]approximate:  Taking taylor expansion of (/ 1 (* (- (acos (/ 1 a))) (/ 1 (/ 1 a)))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ 1 (* (- (acos (/ 1 a))) (/ 1 (/ 1 a)))) in a
* [misc]taylor:  Taking taylor expansion of (* (- (acos (/ 1 a))) (/ 1 (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ 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 (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (* (- (acos (/ 1 a))) 1) into (* -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (* -1 (acos (/ 1 a)))) into (/ -1 (acos (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (/ 1 (* (- (acos (/ 1 a))) (/ 1 (/ 1 a)))) in a
* [misc]taylor:  Taking taylor expansion of (* (- (acos (/ 1 a))) (/ 1 (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ 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 (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (* (- (acos (/ 1 a))) 1) into (* -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (* -1 (acos (/ 1 a)))) into (/ -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ -1 (acos (/ 1 a))) into (/ -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ 1 a))) 0) (* 0 1)) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (* -1 (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ 1 a))) 0) (+ (* 0 0) (* 0 1))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ 1 a))) 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ 1 a))) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ 1 a))) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ 1 a))) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))) (* 0 (/ 0 (* -1 (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ -1 (acos (/ 1 (/ 1 a)))) (/ 1 (/ 1 a))) into (* -1 (/ a (acos a)))
* [misc]approximate:  Taking taylor expansion of (/ 1 (* (- (acos (/ 1 (- a)))) (/ 1 (/ 1 (- a))))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ 1 (* (- (acos (/ 1 (- a)))) (/ 1 (/ 1 (- a))))) in a
* [misc]taylor:  Taking taylor expansion of (* (- (acos (/ 1 (- a)))) (/ 1 (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ 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 (/ 1 -1) into -1
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (* (- (acos (/ -1 a))) -1) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (/ 1 (acos (/ -1 a))) into (/ 1 (acos (/ -1 a)))
* [misc]taylor:  Taking taylor expansion of (/ 1 (* (- (acos (/ 1 (- a)))) (/ 1 (/ 1 (- a))))) in a
* [misc]taylor:  Taking taylor expansion of (* (- (acos (/ 1 (- a)))) (/ 1 (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ 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 (/ 1 -1) into -1
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (* (- (acos (/ -1 a))) -1) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (/ 1 (acos (/ -1 a))) into (/ 1 (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (acos (/ -1 a))) into (/ 1 (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ -1 a))) 0) (* 0 -1)) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (acos (/ -1 a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ -1 a))) 0) (+ (* 0 0) (* 0 -1))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 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 (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ -1 a))) 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 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 (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ -1 a))) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 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 (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ -1 a))) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 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 (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (+ (* (- (acos (/ -1 a))) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 -1))))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* (/ 1 (acos (/ -1 a))) (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))) (* 0 (/ 0 (acos (/ -1 a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ 1 (acos (/ -1 (/ 1 (- a))))) (/ 1 (/ 1 (- a)))) into (* -1 (/ a (acos a)))
* * * [misc]progress:  simplifying candidates
* * * * [misc]progress:  [ 1 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (pow (* (- (acos a)) (/ 1 a)) 1)))>
* [enter]simplify:  Simplifying (* (- (acos a)) (/ 1 a))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* * [misc]simplify:  iters left: 3 (23 enodes)
* * [misc]simplify:  iters left: 2 (47 enodes)
* * [misc]simplify:  iters left: 1 (71 enodes)
* [exit]simplify:  Simplified to (/ (- (acos a)) a)
* [exit]simplify:  Simplified to (/ (- (acos a)) a)
* * * * [misc]progress:  [ 2 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (pow (* (- (acos a)) (/ 1 a)) 1)))>
* * * * [misc]progress:  [ 3 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (exp (+ (log (- (acos a))) (log (/ 1 a))))))>
* [enter]simplify:  Simplifying (+ (log (- (acos a))) (log (/ 1 a)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* * [misc]simplify:  iters left: 4 (21 enodes)
* * [misc]simplify:  iters left: 3 (32 enodes)
* * [misc]simplify:  iters left: 2 (66 enodes)
* * [misc]simplify:  iters left: 1 (251 enodes)
* [exit]simplify:  Simplified to (- (log (- (acos a))) (log a))
* [exit]simplify:  Simplified to (- (log (- (acos a))) (log a))
* * * * [misc]progress:  [ 4 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (exp (log (* (- (acos a)) (/ 1 a))))))>
* [enter]simplify:  Simplifying (log (* (- (acos a)) (/ 1 a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (17 enodes)
* * [misc]simplify:  iters left: 4 (34 enodes)
* * [misc]simplify:  iters left: 3 (72 enodes)
* * [misc]simplify:  iters left: 2 (118 enodes)
* * [misc]simplify:  iters left: 1 (214 enodes)
* [exit]simplify:  Simplified to (log (/ (- (acos a)) a))
* [exit]simplify:  Simplified to (log (/ (- (acos a)) a))
* * * * [misc]progress:  [ 5 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (log (exp (* (- (acos a)) (/ 1 a))))))>
* [enter]simplify:  Simplifying (exp (* (- (acos a)) (/ 1 a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (16 enodes)
* * [misc]simplify:  iters left: 4 (30 enodes)
* * [misc]simplify:  iters left: 3 (63 enodes)
* * [misc]simplify:  iters left: 2 (100 enodes)
* * [misc]simplify:  iters left: 1 (138 enodes)
* [exit]simplify:  Simplified to (pow (exp (/ 1 a)) (- (acos a)))
* [exit]simplify:  Simplified to (pow (exp (/ 1 a)) (- (acos a)))
* * * * [misc]progress:  [ 6 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (cbrt (* (* (* (- (acos a)) (- (acos a))) (- (acos a))) (* (* (/ 1 a) (/ 1 a)) (/ 1 a))))))>
* [enter]simplify:  Simplifying (* (* (* (- (acos a)) (- (acos a))) (- (acos a))) (* (* (/ 1 a) (/ 1 a)) (/ 1 a)))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (32 enodes)
* * [misc]simplify:  iters left: 4 (104 enodes)
* * [misc]simplify:  iters left: 3 (346 enodes)
* [exit]simplify:  Simplified to (* (/ (- (acos a)) a) (/ (* (acos a) (acos a)) (* a a)))
* [exit]simplify:  Simplified to (* (/ (- (acos a)) a) (/ (* (acos a) (acos a)) (* a a)))
* * * * [misc]progress:  [ 7 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (* (cbrt (* (- (acos a)) (/ 1 a))) (cbrt (* (- (acos a)) (/ 1 a)))) (cbrt (* (- (acos a)) (/ 1 a))))))>
* [enter]simplify:  Simplifying (* (cbrt (* (- (acos a)) (/ 1 a))) (cbrt (* (- (acos a)) (/ 1 a))))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* * [misc]simplify:  iters left: 4 (25 enodes)
* * [misc]simplify:  iters left: 3 (49 enodes)
* * [misc]simplify:  iters left: 2 (73 enodes)
* * [misc]simplify:  iters left: 1 (101 enodes)
* [exit]simplify:  Simplified to (* (cbrt (/ (- (acos a)) a)) (cbrt (/ (- (acos a)) a)))
* [exit]simplify:  Simplified to (* (cbrt (/ (- (acos a)) a)) (cbrt (/ (- (acos a)) a)))
* [enter]simplify:  Simplifying (cbrt (* (- (acos a)) (/ 1 a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* * [misc]simplify:  iters left: 4 (24 enodes)
* * [misc]simplify:  iters left: 3 (48 enodes)
* * [misc]simplify:  iters left: 2 (71 enodes)
* * [misc]simplify:  iters left: 1 (98 enodes)
* [exit]simplify:  Simplified to (cbrt (/ (- (acos a)) a))
* [exit]simplify:  Simplified to (cbrt (/ (- (acos a)) a))
* * * * [misc]progress:  [ 8 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (cbrt (* (* (* (- (acos a)) (/ 1 a)) (* (- (acos a)) (/ 1 a))) (* (- (acos a)) (/ 1 a))))))>
* [enter]simplify:  Simplifying (* (* (* (- (acos a)) (/ 1 a)) (* (- (acos a)) (/ 1 a))) (* (- (acos a)) (/ 1 a)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (22 enodes)
* * [misc]simplify:  iters left: 4 (83 enodes)
* * [misc]simplify:  iters left: 3 (311 enodes)
* [exit]simplify:  Simplified to (* (* (/ (acos a) a) (/ (acos a) a)) (- (/ (acos a) a)))
* [exit]simplify:  Simplified to (* (* (/ (acos a) a) (/ (acos a) a)) (- (/ (acos a) a)))
* * * * [misc]progress:  [ 9 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (sqrt (* (- (acos a)) (/ 1 a))) (sqrt (* (- (acos a)) (/ 1 a))))))>
* [enter]simplify:  Simplifying (sqrt (* (- (acos a)) (/ 1 a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* * [misc]simplify:  iters left: 4 (24 enodes)
* * [misc]simplify:  iters left: 3 (48 enodes)
* * [misc]simplify:  iters left: 2 (71 enodes)
* * [misc]simplify:  iters left: 1 (98 enodes)
* [exit]simplify:  Simplified to (sqrt (/ (- (acos a)) a))
* [exit]simplify:  Simplified to (sqrt (/ (- (acos a)) a))
* [enter]simplify:  Simplifying (sqrt (* (- (acos a)) (/ 1 a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* * [misc]simplify:  iters left: 4 (24 enodes)
* * [misc]simplify:  iters left: 3 (48 enodes)
* * [misc]simplify:  iters left: 2 (71 enodes)
* * [misc]simplify:  iters left: 1 (98 enodes)
* [exit]simplify:  Simplified to (sqrt (/ (- (acos a)) a))
* [exit]simplify:  Simplified to (sqrt (/ (- (acos a)) a))
* * * * [misc]progress:  [ 10 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* 1 (* (- (acos a)) (/ 1 a)))))>
* * * * [misc]progress:  [ 11 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ (- (acos a)) a)))>
* * * * [misc]progress:  [ 12 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (- (* (acos a) (/ 1 a)))))>
* [enter]simplify:  Simplifying (* (acos a) (/ 1 a))
* * [misc]simplify:  iters left: 4 (5 enodes)
* * [misc]simplify:  iters left: 3 (10 enodes)
* * [misc]simplify:  iters left: 2 (17 enodes)
* * [misc]simplify:  iters left: 1 (22 enodes)
* [exit]simplify:  Simplified to (/ (acos a) a)
* [exit]simplify:  Simplified to (/ (acos a) a)
* * * * [misc]progress:  [ 13 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (* (- (acos a)) (* (cbrt (/ 1 a)) (cbrt (/ 1 a)))) (cbrt (/ 1 a)))))>
* [enter]simplify:  Simplifying (* (- (acos a)) (* (cbrt (/ 1 a)) (cbrt (/ 1 a))))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* * [misc]simplify:  iters left: 4 (24 enodes)
* * [misc]simplify:  iters left: 3 (35 enodes)
* * [misc]simplify:  iters left: 2 (39 enodes)
* [exit]simplify:  Simplified to (* (- (acos a)) (* (cbrt (/ 1 a)) (cbrt (/ 1 a))))
* [exit]simplify:  Simplified to (* (- (acos a)) (* (cbrt (/ 1 a)) (cbrt (/ 1 a))))
* * * * [misc]progress:  [ 14 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (* (- (acos a)) (sqrt (/ 1 a))) (sqrt (/ 1 a)))))>
* [enter]simplify:  Simplifying (* (- (acos a)) (sqrt (/ 1 a)))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (12 enodes)
* * [misc]simplify:  iters left: 3 (16 enodes)
* * [misc]simplify:  iters left: 2 (17 enodes)
* [exit]simplify:  Simplified to (* (- (acos a)) (sqrt (/ 1 a)))
* [exit]simplify:  Simplified to (* (- (acos a)) (sqrt (/ 1 a)))
* * * * [misc]progress:  [ 15 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (* (- (acos a)) 1) (/ 1 a))))>
* [enter]simplify:  Simplifying (* (- (acos a)) 1)
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* * [misc]simplify:  iters left: 3 (19 enodes)
* * [misc]simplify:  iters left: 2 (20 enodes)
* * [misc]simplify:  iters left: 1 (26 enodes)
* [exit]simplify:  Simplified to (- (acos a))
* [exit]simplify:  Simplified to (- (acos a))
* * * * [misc]progress:  [ 16 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (* (- (acos a)) 1) (/ 1 a))))>
* [enter]simplify:  Simplifying (* (- (acos a)) 1)
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* * [misc]simplify:  iters left: 3 (19 enodes)
* * [misc]simplify:  iters left: 2 (20 enodes)
* * [misc]simplify:  iters left: 1 (26 enodes)
* [exit]simplify:  Simplified to (- (acos a))
* [exit]simplify:  Simplified to (- (acos a))
* * * * [misc]progress:  [ 17 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (* (cbrt (- (acos a))) (cbrt (- (acos a)))) (* (cbrt (- (acos a))) (/ 1 a)))))>
* [enter]simplify:  Simplifying (* (cbrt (- (acos a))) (/ 1 a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (19 enodes)
* * [misc]simplify:  iters left: 3 (24 enodes)
* * [misc]simplify:  iters left: 2 (27 enodes)
* * [misc]simplify:  iters left: 1 (29 enodes)
* [exit]simplify:  Simplified to (/ (cbrt (- (acos a))) a)
* [exit]simplify:  Simplified to (/ (cbrt (- (acos a))) a)
* * * * [misc]progress:  [ 18 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (sqrt (- (acos a))) (* (sqrt (- (acos a))) (/ 1 a)))))>
* [enter]simplify:  Simplifying (* (sqrt (- (acos a))) (/ 1 a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (19 enodes)
* * [misc]simplify:  iters left: 3 (24 enodes)
* * [misc]simplify:  iters left: 2 (27 enodes)
* * [misc]simplify:  iters left: 1 (29 enodes)
* [exit]simplify:  Simplified to (/ (sqrt (- (acos a))) a)
* [exit]simplify:  Simplified to (/ (sqrt (- (acos a))) a)
* * * * [misc]progress:  [ 19 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* 1 (* (- (acos a)) (/ 1 a)))))>
* [enter]simplify:  Simplifying (* (- (acos a)) (/ 1 a))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* * [misc]simplify:  iters left: 3 (23 enodes)
* * [misc]simplify:  iters left: 2 (47 enodes)
* * [misc]simplify:  iters left: 1 (71 enodes)
* [exit]simplify:  Simplified to (/ (- (acos a)) a)
* [exit]simplify:  Simplified to (/ (- (acos a)) a)
* * * * [misc]progress:  [ 20 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* -1 (* (acos a) (/ 1 a)))))>
* [enter]simplify:  Simplifying (* (acos a) (/ 1 a))
* * [misc]simplify:  iters left: 4 (5 enodes)
* * [misc]simplify:  iters left: 3 (10 enodes)
* * [misc]simplify:  iters left: 2 (17 enodes)
* * [misc]simplify:  iters left: 1 (22 enodes)
* [exit]simplify:  Simplified to (/ (acos a) a)
* [exit]simplify:  Simplified to (/ (acos a) a)
* * * * [misc]progress:  [ 21 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (- (* (cbrt (acos a)) (cbrt (acos a)))) (* (cbrt (acos a)) (/ 1 a)))))>
* [enter]simplify:  Simplifying (* (cbrt (acos a)) (/ 1 a))
* * [misc]simplify:  iters left: 4 (6 enodes)
* * [misc]simplify:  iters left: 3 (11 enodes)
* * [misc]simplify:  iters left: 2 (18 enodes)
* * [misc]simplify:  iters left: 1 (23 enodes)
* [exit]simplify:  Simplified to (/ (cbrt (acos a)) a)
* [exit]simplify:  Simplified to (/ (cbrt (acos a)) a)
* * * * [misc]progress:  [ 22 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (- (sqrt (acos a))) (* (sqrt (acos a)) (/ 1 a)))))>
* [enter]simplify:  Simplifying (* (sqrt (acos a)) (/ 1 a))
* * [misc]simplify:  iters left: 4 (6 enodes)
* * [misc]simplify:  iters left: 3 (11 enodes)
* * [misc]simplify:  iters left: 2 (18 enodes)
* * [misc]simplify:  iters left: 1 (23 enodes)
* [exit]simplify:  Simplified to (/ (sqrt (acos a)) a)
* [exit]simplify:  Simplified to (/ (sqrt (acos a)) a)
* * * * [misc]progress:  [ 23 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (- 1) (* (acos a) (/ 1 a)))))>
* [enter]simplify:  Simplifying (* (acos a) (/ 1 a))
* * [misc]simplify:  iters left: 4 (5 enodes)
* * [misc]simplify:  iters left: 3 (10 enodes)
* * [misc]simplify:  iters left: 2 (17 enodes)
* * [misc]simplify:  iters left: 1 (22 enodes)
* [exit]simplify:  Simplified to (/ (acos a) a)
* [exit]simplify:  Simplified to (/ (acos a) a)
* * * * [misc]progress:  [ 24 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (* (cbrt (acos a)) (cbrt (acos a))) (* (- (cbrt (acos a))) (/ 1 a)))))>
* [enter]simplify:  Simplifying (* (- (cbrt (acos a))) (/ 1 a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* * [misc]simplify:  iters left: 4 (24 enodes)
* * [misc]simplify:  iters left: 3 (48 enodes)
* * [misc]simplify:  iters left: 2 (71 enodes)
* * [misc]simplify:  iters left: 1 (99 enodes)
* [exit]simplify:  Simplified to (* (- (/ 1 a)) (cbrt (acos a)))
* [exit]simplify:  Simplified to (* (- (/ 1 a)) (cbrt (acos a)))
* * * * [misc]progress:  [ 25 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (sqrt (acos a)) (* (- (sqrt (acos a))) (/ 1 a)))))>
* [enter]simplify:  Simplifying (* (- (sqrt (acos a))) (/ 1 a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* * [misc]simplify:  iters left: 4 (24 enodes)
* * [misc]simplify:  iters left: 3 (48 enodes)
* * [misc]simplify:  iters left: 2 (71 enodes)
* * [misc]simplify:  iters left: 1 (99 enodes)
* [exit]simplify:  Simplified to (* (- (/ 1 a)) (sqrt (acos a)))
* [exit]simplify:  Simplified to (* (- (/ 1 a)) (sqrt (acos a)))
* * * * [misc]progress:  [ 26 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* 1 (* (- (acos a)) (/ 1 a)))))>
* [enter]simplify:  Simplifying (* (- (acos a)) (/ 1 a))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* * [misc]simplify:  iters left: 3 (23 enodes)
* * [misc]simplify:  iters left: 2 (47 enodes)
* * [misc]simplify:  iters left: 1 (71 enodes)
* [exit]simplify:  Simplified to (/ (- (acos a)) a)
* [exit]simplify:  Simplified to (/ (- (acos a)) a)
* * * * [misc]progress:  [ 27 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ (* (- (acos a)) 1) a)))>
* [enter]simplify:  Simplifying (* (- (acos a)) 1)
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (10 enodes)
* * [misc]simplify:  iters left: 3 (19 enodes)
* * [misc]simplify:  iters left: 2 (20 enodes)
* * [misc]simplify:  iters left: 1 (26 enodes)
* [exit]simplify:  Simplified to (- (acos a))
* [exit]simplify:  Simplified to (- (acos a))
* * * * [misc]progress:  [ 28 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (/ 1 a) (- (acos a)))))>
* * * * [misc]progress:  [ 29 / 52 ] simplifiying candidate #<alt-delta (λ (a) (pow (* (- (acos a)) (/ 1 a)) -1))>
* * * * [misc]progress:  [ 30 / 52 ] simplifiying candidate #<alt-delta (λ (a) (pow (* (- (acos a)) (/ 1 a)) (- 1)))>
* [enter]simplify:  Simplifying (- 1)
* * [misc]simplify:  iters left: 2 (2 enodes)
* * [misc]simplify:  iters left: 1 (4 enodes)
* [exit]simplify:  Simplified to (- 1)
* [exit]simplify:  Simplified to (- 1)
* * * * [misc]progress:  [ 31 / 52 ] simplifiying candidate #<alt-delta (λ (a) (pow (* (- (acos a)) (/ 1 a)) (- 1)))>
* [enter]simplify:  Simplifying (- 1)
* * [misc]simplify:  iters left: 2 (2 enodes)
* * [misc]simplify:  iters left: 1 (4 enodes)
* [exit]simplify:  Simplified to (- 1)
* [exit]simplify:  Simplified to (- 1)
* * * * [misc]progress:  [ 32 / 52 ] simplifiying candidate #<alt-delta (λ (a) (pow (/ 1 (* (- (acos a)) (/ 1 a))) 1))>
* * * * [misc]progress:  [ 33 / 52 ] simplifiying candidate #<alt-delta (λ (a) (exp (- (+ (log (- (acos a))) (log (/ 1 a))))))>
* [enter]simplify:  Simplifying (- (+ (log (- (acos a))) (log (/ 1 a))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (19 enodes)
* * [misc]simplify:  iters left: 4 (28 enodes)
* * [misc]simplify:  iters left: 3 (39 enodes)
* * [misc]simplify:  iters left: 2 (67 enodes)
* * [misc]simplify:  iters left: 1 (220 enodes)
* [exit]simplify:  Simplified to (- (log a) (log (- (acos a))))
* [exit]simplify:  Simplified to (- (log a) (log (- (acos a))))
* * * * [misc]progress:  [ 34 / 52 ] simplifiying candidate #<alt-delta (λ (a) (exp (- (log (* (- (acos a)) (/ 1 a))))))>
* [enter]simplify:  Simplifying (- (log (* (- (acos a)) (/ 1 a))))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (18 enodes)
* * [misc]simplify:  iters left: 4 (38 enodes)
* * [misc]simplify:  iters left: 3 (78 enodes)
* * [misc]simplify:  iters left: 2 (130 enodes)
* * [misc]simplify:  iters left: 1 (236 enodes)
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* * * * [misc]progress:  [ 35 / 52 ] simplifiying candidate #<alt-delta (λ (a) (exp (log (/ 1 (* (- (acos a)) (/ 1 a))))))>
* [enter]simplify:  Simplifying (log (/ 1 (* (- (acos a)) (/ 1 a))))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (21 enodes)
* * [misc]simplify:  iters left: 4 (46 enodes)
* * [misc]simplify:  iters left: 3 (109 enodes)
* * [misc]simplify:  iters left: 2 (238 enodes)
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* * * * [misc]progress:  [ 36 / 52 ] simplifiying candidate #<alt-delta (λ (a) (log (exp (/ 1 (* (- (acos a)) (/ 1 a))))))>
* [enter]simplify:  Simplifying (exp (/ 1 (* (- (acos a)) (/ 1 a))))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (17 enodes)
* * [misc]simplify:  iters left: 4 (32 enodes)
* * [misc]simplify:  iters left: 3 (71 enodes)
* * [misc]simplify:  iters left: 2 (113 enodes)
* * [misc]simplify:  iters left: 1 (168 enodes)
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* * * * [misc]progress:  [ 37 / 52 ] simplifiying candidate #<alt-delta (λ (a) (* (* (cbrt (/ 1 (* (- (acos a)) (/ 1 a)))) (cbrt (/ 1 (* (- (acos a)) (/ 1 a))))) (cbrt (/ 1 (* (- (acos a)) (/ 1 a))))))>
* [enter]simplify:  Simplifying (* (cbrt (/ 1 (* (- (acos a)) (/ 1 a)))) (cbrt (/ 1 (* (- (acos a)) (/ 1 a)))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (18 enodes)
* * [misc]simplify:  iters left: 4 (33 enodes)
* * [misc]simplify:  iters left: 3 (68 enodes)
* * [misc]simplify:  iters left: 2 (111 enodes)
* * [misc]simplify:  iters left: 1 (170 enodes)
* [exit]simplify:  Simplified to (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a)))))
* [enter]simplify:  Simplifying (cbrt (/ 1 (* (- (acos a)) (/ 1 a))))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (17 enodes)
* * [misc]simplify:  iters left: 4 (32 enodes)
* * [misc]simplify:  iters left: 3 (67 enodes)
* * [misc]simplify:  iters left: 2 (109 enodes)
* * [misc]simplify:  iters left: 1 (164 enodes)
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 38 / 52 ] simplifiying candidate #<alt-delta (λ (a) (cbrt (* (* (/ 1 (* (- (acos a)) (/ 1 a))) (/ 1 (* (- (acos a)) (/ 1 a)))) (/ 1 (* (- (acos a)) (/ 1 a))))))>
* [enter]simplify:  Simplifying (* (* (/ 1 (* (- (acos a)) (/ 1 a))) (/ 1 (* (- (acos a)) (/ 1 a)))) (/ 1 (* (- (acos a)) (/ 1 a))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (25 enodes)
* * [misc]simplify:  iters left: 4 (70 enodes)
* * [misc]simplify:  iters left: 3 (351 enodes)
* [exit]simplify:  Simplified to (/ (/ a (- (acos a))) (* (/ (acos a) a) (/ (acos a) a)))
* [exit]simplify:  Simplified to (/ (/ a (- (acos a))) (* (/ (acos a) a) (/ (acos a) a)))
* * * * [misc]progress:  [ 39 / 52 ] simplifiying candidate #<alt-delta (λ (a) (* (sqrt (/ 1 (* (- (acos a)) (/ 1 a)))) (sqrt (/ 1 (* (- (acos a)) (/ 1 a))))))>
* [enter]simplify:  Simplifying (sqrt (/ 1 (* (- (acos a)) (/ 1 a))))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (17 enodes)
* * [misc]simplify:  iters left: 4 (32 enodes)
* * [misc]simplify:  iters left: 3 (67 enodes)
* * [misc]simplify:  iters left: 2 (109 enodes)
* * [misc]simplify:  iters left: 1 (164 enodes)
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [enter]simplify:  Simplifying (sqrt (/ 1 (* (- (acos a)) (/ 1 a))))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (17 enodes)
* * [misc]simplify:  iters left: 4 (32 enodes)
* * [misc]simplify:  iters left: 3 (67 enodes)
* * [misc]simplify:  iters left: 2 (109 enodes)
* * [misc]simplify:  iters left: 1 (164 enodes)
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 40 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ (- 1) (- (* (- (acos a)) (/ 1 a)))))>
* [enter]simplify:  Simplifying (- 1)
* * [misc]simplify:  iters left: 2 (2 enodes)
* * [misc]simplify:  iters left: 1 (4 enodes)
* [exit]simplify:  Simplified to (- 1)
* [exit]simplify:  Simplified to (- 1)
* [enter]simplify:  Simplifying (- (* (- (acos a)) (/ 1 a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (18 enodes)
* * [misc]simplify:  iters left: 4 (45 enodes)
* * [misc]simplify:  iters left: 3 (58 enodes)
* * [misc]simplify:  iters left: 2 (95 enodes)
* * [misc]simplify:  iters left: 1 (107 enodes)
* [exit]simplify:  Simplified to (/ (acos a) a)
* [exit]simplify:  Simplified to (/ (acos a) a)
* * * * [misc]progress:  [ 41 / 52 ] simplifiying candidate #<alt-delta (λ (a) (* 1 (/ 1 (* (- (acos a)) (/ 1 a)))))>
* * * * [misc]progress:  [ 42 / 52 ] simplifiying candidate #<alt-delta (λ (a) (* 1 (/ 1 (* (- (acos a)) (/ 1 a)))))>
* [enter]simplify:  Simplifying (/ 1 (* (- (acos a)) (/ 1 a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (16 enodes)
* * [misc]simplify:  iters left: 4 (31 enodes)
* * [misc]simplify:  iters left: 3 (66 enodes)
* * [misc]simplify:  iters left: 2 (112 enodes)
* * [misc]simplify:  iters left: 1 (167 enodes)
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* * * * [misc]progress:  [ 43 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ (* (- (acos a)) (/ 1 a)) 1)))>
* [enter]simplify:  Simplifying (/ (* (- (acos a)) (/ 1 a)) 1)
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (16 enodes)
* * [misc]simplify:  iters left: 4 (30 enodes)
* * [misc]simplify:  iters left: 3 (65 enodes)
* * [misc]simplify:  iters left: 2 (95 enodes)
* * [misc]simplify:  iters left: 1 (151 enodes)
* [exit]simplify:  Simplified to (/ (- (acos a)) a)
* [exit]simplify:  Simplified to (/ (- (acos a)) a)
* * * * [misc]progress:  [ 44 / 52 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ 1 (- (acos a))) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ 1 (- (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (7 enodes)
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* * * * [misc]progress:  [ 45 / 52 ] simplifiying candidate #<alt-delta (λ (a) (* (/ 1 (- (acos a))) a))>
* [enter]simplify:  Simplifying (/ 1 (- (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (7 enodes)
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* * * * [misc]progress:  [ 46 / 52 ] simplifiying candidate #<alt-delta (λ (a) (* (/ 1 (* (- (acos a)) 1)) a))>
* [enter]simplify:  Simplifying (/ 1 (* (- (acos a)) 1))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (24 enodes)
* * [misc]simplify:  iters left: 3 (25 enodes)
* * [misc]simplify:  iters left: 2 (31 enodes)
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* * * * [misc]progress:  [ 47 / 52 ] simplifiying candidate #<alt-event (λ (a) (/ 1 (* -1 (/ (acos a) a))))>
* [enter]simplify:  Simplifying (/ 1 (* -1 (/ (acos a) a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* * [misc]simplify:  iters left: 4 (24 enodes)
* * [misc]simplify:  iters left: 3 (35 enodes)
* * [misc]simplify:  iters left: 2 (49 enodes)
* * [misc]simplify:  iters left: 1 (60 enodes)
* [exit]simplify:  Simplified to (/ (/ a -1) (acos a))
* * * * [misc]progress:  [ 48 / 52 ] simplifiying candidate #<alt-event (λ (a) (/ 1 (* -1 (/ (acos a) a))))>
* [enter]simplify:  Simplifying (/ 1 (* -1 (/ (acos a) a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* * [misc]simplify:  iters left: 4 (24 enodes)
* * [misc]simplify:  iters left: 3 (35 enodes)
* * [misc]simplify:  iters left: 2 (49 enodes)
* * [misc]simplify:  iters left: 1 (60 enodes)
* [exit]simplify:  Simplified to (/ (/ a -1) (acos a))
* * * * [misc]progress:  [ 49 / 52 ] simplifiying candidate #<alt-event (λ (a) (/ 1 (* -1 (/ (acos a) a))))>
* [enter]simplify:  Simplifying (/ 1 (* -1 (/ (acos a) a)))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* * [misc]simplify:  iters left: 4 (24 enodes)
* * [misc]simplify:  iters left: 3 (35 enodes)
* * [misc]simplify:  iters left: 2 (49 enodes)
* * [misc]simplify:  iters left: 1 (60 enodes)
* [exit]simplify:  Simplified to (/ (/ a -1) (acos a))
* * * * [misc]progress:  [ 50 / 52 ] simplifiying candidate #<alt-event (λ (a) (* -1 (/ a (acos a))))>
* [enter]simplify:  Simplifying (* -1 (/ a (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* * [misc]simplify:  iters left: 3 (14 enodes)
* * [misc]simplify:  iters left: 2 (16 enodes)
* * [misc]simplify:  iters left: 1 (18 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 51 / 52 ] simplifiying candidate #<alt-event (λ (a) (* -1 (/ a (acos a))))>
* [enter]simplify:  Simplifying (* -1 (/ a (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* * [misc]simplify:  iters left: 3 (14 enodes)
* * [misc]simplify:  iters left: 2 (16 enodes)
* * [misc]simplify:  iters left: 1 (18 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 52 / 52 ] simplifiying candidate #<alt-event (λ (a) (* -1 (/ a (acos a))))>
* [enter]simplify:  Simplifying (* -1 (/ a (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* * [misc]simplify:  iters left: 3 (14 enodes)
* * [misc]simplify:  iters left: 2 (16 enodes)
* * [misc]simplify:  iters left: 1 (18 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * [misc]progress:  adding candidates to table
* * [misc]progress:  iteration 4 / 4
* * * [misc]progress:  picking best candidate
* [misc]none:  Fresh alts: 8
* [misc]none:  All alts: 11
* [misc]none:  Fresh alt: (λ (a) (* (sqrt (/ a (- (acos a)))) (sqrt (/ a (- (acos a))))))
* [misc]none:  Fresh alt: (λ (a) (cbrt (/ (* (/ a (acos a)) (/ a (acos a))) (/ (- (acos a)) a))))
* [misc]none:  Fresh alt: (λ (a) (/ (/ 1 (- (acos a))) (/ 1 a)))
* [misc]none:  Non-fresh alt: (λ (a) (/ a (- (acos a))))
* [misc]none:  Non-fresh alt: (λ (a) (/ 1 (* (- (acos a)) (/ 1 a))))
* [misc]none:  Fresh alt: (λ (a) (* (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a))))) (cbrt (/ a (- (acos a))))))
* [misc]none:  Non-fresh alt: (λ (a) (/ 1 (/ (- (acos a)) a)))
* [misc]none:  Fresh alt: (λ (a) (/ 1 (cbrt (/ (* (/ (acos a) a) (/ (acos a) a)) (/ a (- (acos a)))))))
* [misc]none:  Fresh alt: (λ (a) (/ (/ 1 (sqrt (/ (- (acos a)) a))) (sqrt (/ (- (acos a)) a))))
* [misc]none:  Fresh alt: (λ (a) (/ 1 (* (* (- (acos a)) (* (cbrt (/ 1 a)) (cbrt (/ 1 a)))) (cbrt (/ 1 a)))))
* [misc]none:  Fresh alt: (λ (a) (/ (/ 1 (* (cbrt (/ (- (acos a)) a)) (cbrt (/ (- (acos a)) a)))) (cbrt (/ (- (acos a)) a))))
* [misc]none:  Fresh alt indexes
* [misc]none:  (λ (a) (* (sqrt (/ a (- (acos a)))) (sqrt (/ a (- (acos a)))))): 0
* [misc]none:  (λ (a) (cbrt (/ (* (/ a (acos a)) (/ a (acos a))) (/ (- (acos a)) a)))): 1
* [misc]none:  (λ (a) (/ (/ 1 (- (acos a))) (/ 1 a))): 2
* [misc]none:  (λ (a) (* (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a))))) (cbrt (/ a (- (acos a)))))): 3
* [misc]none:  (λ (a) (/ 1 (cbrt (/ (* (/ (acos a) a) (/ (acos a) a)) (/ a (- (acos a))))))): 4
* [misc]none:  (λ (a) (/ (/ 1 (sqrt (/ (- (acos a)) a))) (sqrt (/ (- (acos a)) a)))): 5
* [misc]none:  (λ (a) (/ 1 (* (* (- (acos a)) (* (cbrt (/ 1 a)) (cbrt (/ 1 a)))) (cbrt (/ 1 a))))): 6
* [misc]none:  (λ (a) (/ (/ 1 (* (cbrt (/ (- (acos a)) a)) (cbrt (/ (- (acos a)) a)))) (cbrt (/ (- (acos a)) a)))): 7
* [misc]none:  Best fresh alt per point
* [misc]none:  (-1.5896307370952378e-24): 0
* [misc]none:  (-2.381600975603585e-126): 0
* [misc]none:  (1.1078263738557817e-173): 2
* [misc]none:  (-4.8901493658439805e-257): 0
* [misc]none:  (-1.086848415384618e-149): 2
* [misc]none:  (1.5400917624685415e-295): 6
* [misc]none:  (1.389009890486587e-304): 2
* [misc]none:  (-0.07645769362495446): 0
* [misc]none:  (3.5836534998638334e-135): 2
* [misc]none:  (5.874263446950659e-136): 6
* [misc]none:  (-4.6360422655231974e-215): 0
* [misc]none:  (1.3639040980897921e-39): 1
* [misc]none:  (2.4497413502625085e-301): 2
* [misc]none:  (1.9836536473017196e-256): 2
* [misc]none:  (2.7441626242764893e-109): 2
* [misc]none:  (-1.2184545386686845e-292): 0
* [misc]none:  (-4.164360616471795e-297): 0
* [misc]none:  (1.1330111314315052e-297): 2
* [misc]none:  (6.333415879143823e-203): 6
* [misc]none:  (-1.1408068010697186e-09): 0
* [misc]none:  (6.534790094984563e-249): 2
* [misc]none:  (-6.136769236604219e-245): 6
* [misc]none:  (-1.5184287807448694e-256): 0
* [misc]none:  (9.20482191500962e-294): 2
* [misc]none:  (6.826390525782658e-164): 2
* [misc]none:  (1.4517955555700533e-57): 1
* [misc]none:  (-6.624186711279531e-158): 2
* [misc]none:  (-2.28428829200312e-74): 1
* [misc]none:  (6.319063013887454e-198): 7
* [misc]none:  (4.013577168037153e-101): 2
* [misc]none:  (-5.9357220490245764e-15): 0
* [misc]none:  (-1.423411965411883e-294): 0
* [misc]none:  (1.5130621813503031e-75): 4
* [misc]none:  (-3.3795898713138266e-300): 0
* [misc]none:  (-8.397564680171817e-171): 0
* [misc]none:  (-5.030258942894069e-286): 0
* [misc]none:  (7.700703882618771e-282): 6
* [misc]none:  (-4.182069781177431e-143): 5
* [misc]none:  (3.8976396927163173e-162): 2
* [misc]none:  (-4.334942407090635e-248): 0
* [misc]none:  (-5.434332993935807e-16): 2
* [misc]none:  (9.422179697047065e-164): 2
* [misc]none:  (2.0152844845402166e-297): 7
* [misc]none:  (8.604490187894414e-112): 2
* [misc]none:  (1.1753499799973743e-97): 1
* [misc]none:  (-1.4789327900215312e-68): 0
* [misc]none:  (1.7699153793529457e-292): 2
* [misc]none:  (-1.4258769564549258e-208): 0
* [misc]none:  (-7.278263595880122e-193): 2
* [misc]none:  (-2.126351281480013e-88): 0
* [misc]none:  (4.1993878019740277e-286): 3
* [misc]none:  (-0.00023602766722364432): 1
* [misc]none:  (-4.006330508771236e-123): 2
* [misc]none:  (1.3228826725861251e-83): 2
* [misc]none:  (-1.319380347151282e-215): 0
* [misc]none:  (1.1326695724237201e-117): 2
* [misc]none:  (2.0115496002781107e-145): 2
* [misc]none:  (-2.7349284820526125e-289): 2
* [misc]none:  (1.8862750447266752e-53): 2
* [misc]none:  (3.0319757073152243e-73): 1
* [misc]none:  (3.46946296425657e-151): 2
* [misc]none:  (-1.5345220119867362e-54): 0
* [misc]none:  (4.4617997614332734e-49): 1
* [misc]none:  (-4.576042298933677e-291): 2
* [misc]none:  (5.1841759100413795e-161): 2
* [misc]none:  (6.821311827045434e-30): 1
* [misc]none:  (-1.9929766413300646e-81): 0
* [misc]none:  (2.6830861914889714e-191): 2
* [misc]none:  (-1.9739730389420339e-53): 0
* [misc]none:  (-1.3992932767813926e-176): 0
* [misc]none:  (2.5419285128257477e-50): 1
* [misc]none:  (-5.652687215490466e-220): 0
* [misc]none:  (-5.689324367802329e-246): 2
* [misc]none:  (-4.3909971879838963e-305): 2
* [misc]none:  (1.1909630224861144e-308): 2
* [misc]none:  (-2.930048407292739e-56): 2
* [misc]none:  (-6.427869387517747e-307): 0
* [misc]none:  (9.212199844523645e-229): 2
* [misc]none:  (-1.2461956087023843e-38): 0
* [misc]none:  (3.003386221248247e-77): 1
* [misc]none:  (7.613990227232114e-101): 2
* [misc]none:  (1.4369290385678577e-161): 7
* [misc]none:  (-1.8419406107088546e-16): 0
* [misc]none:  (2.3887736368263357e-225): 2
* [misc]none:  (-6.168974554229468e-230): 0
* [misc]none:  (2.116370076668309e-191): 3
* [misc]none:  (-1.1883563404969162e-50): 2
* [misc]none:  (-6.903597812238514e-236): 0
* [misc]none:  (1.1142271720543672e-206): 3
* [misc]none:  (2.8003106991789085e-69): 3
* [misc]none:  (-3.912955183972641e-245): 0
* [misc]none:  (5.515506992492392e-277): 2
* [misc]none:  (2.595646488837273e-219): 2
* [misc]none:  (-1.0403226659956264e-12): 1
* [misc]none:  (3.108236652528406e-297): 2
* [misc]none:  (7.181266914182018e-165): 2
* [misc]none:  (-4.054936013280633e-214): 2
* [misc]none:  (-5.931595524156171e-137): 6
* [misc]none:  (1.1353295840851429e-96): 4
* [misc]none:  (-1.9487210599798821e-283): 2
* [misc]none:  (2.347768069961951e-79): 2
* [misc]none:  (7.595028648060239e-286): 2
* [misc]none:  (-1.7004214918492403e-195): 2
* [misc]none:  (-2.9451802210491167e-226): 3
* [misc]none:  (4.5690448860660455e-67): 2
* [misc]none:  (-4.213852294319719e-45): 0
* [misc]none:  (1.0832199703372366e-253): 2
* [misc]none:  (-1.028098363509014e-206): 0
* [misc]none:  (3.934156464498665e-121): 2
* [misc]none:  (-2.030003858554109e-299): 2
* [misc]none:  (0.0005921945720183679): 1
* [misc]none:  (2.8115284450926948e-120): 2
* [misc]none:  (-1.4914047823213697e-303): 5
* [misc]none:  (-5.51972060484157e-206): 0
* [misc]none:  (-2.222084476892157e-27): 1
* [misc]none:  (2.9394468165964015e-257): 2
* [misc]none:  (3.271929098149761e-144): 2
* [misc]none:  (3.0718166030691505e-80): 2
* [misc]none:  (6.604350361119279e-291): 2
* [misc]none:  (3.861477555295976e-66): 1
* [misc]none:  (7.835819247789118e-215): 2
* [misc]none:  (-1.7331826939437403e-32): 1
* [misc]none:  (1.5041078345043152e-175): 2
* [misc]none:  (-7.5213132710662e-74): 0
* [misc]none:  (3.0457736919219457e-222): 2
* [misc]none:  (-1.1587029546828107e-151): 0
* [misc]none:  (-2.4216252182489007e-26): 1
* [misc]none:  (-1.4390028162741748e-46): 0
* [misc]none:  (8.124998850854922e-91): 1
* [misc]none:  (-5.655718042216706e-88): 0
* [misc]none:  (3.19314088639968e-300): 2
* [misc]none:  (-2.460746881557577e-120): 2
* [misc]none:  (2.6209483109511002e-99): 2
* [misc]none:  (-1.184307734105162e-152): 2
* [misc]none:  (3.9436987604242746e-188): 2
* [misc]none:  (1.2987545615858837e-229): 2
* [misc]none:  (1.3556558330338219e-279): 2
* [misc]none:  (5.600091178152213e-210): 6
* [misc]none:  (7.360949206952843e-212): 3
* [misc]none:  (-4.623471500501843e-242): 2
* [misc]none:  (2.924154450481512e-86): 1
* [misc]none:  (1.1766044207630259e-195): 2
* [misc]none:  (-0.014763539181529813): 0
* [misc]none:  (-2.5295585364629736e-253): 0
* [misc]none:  (3.125863179986306e-134): 2
* [misc]none:  (-8.950192398328319e-216): 0
* [misc]none:  (-1.7783570294902284e-29): 0
* [misc]none:  (4.319230432601922e-289): 3
* [misc]none:  (6.0910080487156845e-145): 2
* [misc]none:  (-3.2028793163485514e-267): 0
* [misc]none:  (-5.767560760391122e-80): 0
* [misc]none:  (3.087465078472461e-297): 2
* [misc]none:  (1.8641835944090122e-68): 4
* [misc]none:  (2.9298628929536803e-07): 2
* [misc]none:  (2.112352033422511e-76): 1
* [misc]none:  (-1.4985268459995148e-46): 0
* [misc]none:  (5.682432409793209e-103): 2
* [misc]none:  (3.763740454339611e-154): 2
* [misc]none:  (2.337605690906294e-85): 4
* [misc]none:  (-4.885442056107934e-227): 0
* [misc]none:  (-3.356284453668777e-114): 0
* [misc]none:  (1.939469755263449e-274): 2
* [misc]none:  (2.0558821145728443e-244): 2
* [misc]none:  (7.118304679887613e-64): 1
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* [misc]none:  (-5.628195320915282e-68): 1
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* [misc]none:  (1.7265727720717877e-65): 4
* [misc]none:  (6.525431496731668e-64): 1
* [misc]none:  (2.704077310435608e-253): 2
* [misc]none:  (2.7511202385052856e-18): 2
* [misc]none:  (3.82956155404422e-299): 2
* [misc]none:  (-8.2157022007629e-58): 1
* [misc]none:  (-8.347536812100916e-44): 0
* [misc]none:  (-2.710750607360271e-260): 0
* [misc]none:  (4.296582624822391e-200): 2
* [misc]none:  (-2.8582758774924267e-140): 3
* [misc]none:  (9.139158849230913e-305): 2
* [misc]none:  (6.683383915725252e-271): 2
* [misc]none:  (1.830961252259433e-59): 1
* [misc]none:  (-1.7614646333235536e-68): 0
* [misc]none:  (4.068667347744151e-179): 2
* [misc]none:  (-2.7764650204569527e-216): 0
* [misc]none:  (-3.81685776062912e-89): 0
* [misc]none:  (3.853952974089327e-228): 2
* [misc]none:  (-5.100815418059268e-90): 0
* [misc]none:  (6.009493492582987e-296): 2
* [misc]none:  (-1.157925061166081e-58): 0
* [misc]none:  Picked alt (λ (a) (/ (/ 1 (- (acos a))) (/ 1 a)))
* * * * [misc]pick:  Picked  #<alt-delta (λ (a) (/ (/ 1 (- (acos a))) (/ 1 a)))>
* * * [misc]progress:  localizing error
* * * [misc]progress:  generating rewritten candidates
* * * * [misc]progress:  [ 1 / 2 ] rewriting at (2)
* * * * [misc]progress:  [ 2 / 2 ] rewriting at (2 1)
* * * [misc]progress:  generating series expansions
* * * * [misc]progress:  [ 1 / 2 ] generating series at (2)
* [misc]approximate:  Taking taylor expansion of (/ (/ 1 (- (acos a))) (/ 1 a)) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 (- (acos a))) (/ 1 a)) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 (- (acos a))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos a))) into (/ -1 (acos a))
* [misc]taylor:  Taking taylor expansion of (/ 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 (/ (/ -1 (acos a)) 1) into (/ -1 (acos a))
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 (- (acos a))) (/ 1 a)) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 (- (acos a))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos a))) into (/ -1 (acos a))
* [misc]taylor:  Taking taylor expansion of (/ 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 (/ (/ -1 (acos a)) 1) into (/ -1 (acos a))
* [misc]backup-simplify:  Simplify (/ -1 (acos a)) into (/ -1 (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (/ -1 (acos a)) (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (/ -1 (acos a)) (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (/ -1 (acos a)) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (/ -1 (acos a)) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (/ -1 (acos a)) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (/ -1 (acos a)) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ -1 (acos a)) a) into (* -1 (/ a (acos a)))
* [misc]approximate:  Taking taylor expansion of (/ (/ 1 (- (acos (/ 1 a)))) (/ 1 (/ 1 a))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 (- (acos (/ 1 a)))) (/ 1 (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 (- (acos (/ 1 a)))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos (/ 1 a)))) into (/ -1 (acos (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ 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 (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (/ (/ -1 (acos (/ 1 a))) 1) into (/ -1 (acos (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 (- (acos (/ 1 a)))) (/ 1 (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 (- (acos (/ 1 a)))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos (/ 1 a)))) into (/ -1 (acos (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ 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 (/ 1 1) into 1
* [misc]backup-simplify:  Simplify (/ (/ -1 (acos (/ 1 a))) 1) into (/ -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ -1 (acos (/ 1 a))) into (/ -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 1) (+ (* (/ -1 (acos (/ 1 a))) (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ -1 (acos (/ 1 (/ 1 a)))) (/ 1 (/ 1 a))) into (* -1 (/ a (acos a)))
* [misc]approximate:  Taking taylor expansion of (/ (/ 1 (- (acos (/ 1 (- a))))) (/ 1 (/ 1 (- a)))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 (- (acos (/ 1 (- a))))) (/ 1 (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 (- (acos (/ 1 (- a))))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos (/ -1 a)))) into (/ -1 (acos (/ -1 a)))
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ 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 (/ 1 -1) into -1
* [misc]backup-simplify:  Simplify (/ (/ -1 (acos (/ -1 a))) -1) into (/ 1 (acos (/ -1 a)))
* [misc]taylor:  Taking taylor expansion of (/ (/ 1 (- (acos (/ 1 (- a))))) (/ 1 (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (/ 1 (- (acos (/ 1 (- a))))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos (/ -1 a)))) into (/ -1 (acos (/ -1 a)))
* [misc]taylor:  Taking taylor expansion of (/ 1 (/ 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 (/ 1 -1) into -1
* [misc]backup-simplify:  Simplify (/ (/ -1 (acos (/ -1 a))) -1) into (/ 1 (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (acos (/ -1 a))) into (/ 1 (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 -1) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 -1) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 -1) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 -1) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 -1) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- 1) into -1
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (+ (* -1 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify (- (/ 0 -1) (+ (* (/ 1 (acos (/ -1 a))) (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)) (* 0 (/ 0 -1)))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (* (/ 1 (acos (/ -1 (/ 1 (- a))))) (/ 1 (/ 1 (- a)))) into (* -1 (/ a (acos a)))
* * * * [misc]progress:  [ 2 / 2 ] generating series at (2 1)
* [misc]approximate:  Taking taylor expansion of (/ 1 (- (acos a))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ 1 (- (acos a))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos a))) into (/ -1 (acos a))
* [misc]taylor:  Taking taylor expansion of (/ 1 (- (acos a))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos a)) in a
* [misc]taylor:  Taking taylor expansion of (acos a) in a
* [misc]backup-simplify:  Simplify (acos a) into (acos a)
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos a))) into (/ -1 (acos a))
* [misc]backup-simplify:  Simplify (/ -1 (acos a)) into (/ -1 (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos a)) into (- (acos a))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos a)) (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))) (* 0 (/ 0 (- (acos a)))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (/ -1 (acos a)) into (/ -1 (acos a))
* [misc]approximate:  Taking taylor expansion of (/ 1 (- (acos (/ 1 a)))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ 1 (- (acos (/ 1 a)))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos (/ 1 a)))) into (/ -1 (acos (/ 1 a)))
* [misc]taylor:  Taking taylor expansion of (/ 1 (- (acos (/ 1 a)))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 a))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 a)) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 a)) into (acos (/ 1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos (/ 1 a)))) into (/ -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (/ -1 (acos (/ 1 a))) into (/ -1 (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ 1 a))) into (- (acos (/ 1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ 1 a))) (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))) (* 0 (/ 0 (- (acos (/ 1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (/ -1 (acos (/ 1 (/ 1 a)))) into (/ -1 (acos a))
* [misc]approximate:  Taking taylor expansion of (/ 1 (- (acos (/ 1 (- a))))) in (a) around 0
* [misc]taylor:  Taking taylor expansion of (/ 1 (- (acos (/ 1 (- a))))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos (/ -1 a)))) into (/ -1 (acos (/ -1 a)))
* [misc]taylor:  Taking taylor expansion of (/ 1 (- (acos (/ 1 (- a))))) in a
* [misc]taylor:  Taking taylor expansion of (- (acos (/ 1 (- a)))) in a
* [misc]taylor:  Taking taylor expansion of (acos (/ 1 (- a))) in a
* [misc]backup-simplify:  Simplify (acos (/ 1 (- a))) into (acos (/ -1 a))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ 1 (- (acos (/ -1 a)))) into (/ -1 (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (/ -1 (acos (/ -1 a))) into (/ -1 (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- 0) into 0
* [misc]backup-simplify:  Simplify (- (acos (/ -1 a))) into (- (acos (/ -1 a)))
* [misc]backup-simplify:  Simplify (- (+ (* (/ -1 (acos (/ -1 a))) (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))) (* 0 (/ 0 (- (acos (/ -1 a))))))) into 0
* [misc]backup-simplify:  Simplify 0 into 0
* [misc]backup-simplify:  Simplify (/ -1 (acos (/ -1 (/ 1 (- a))))) into (/ -1 (acos a))
* * * [misc]progress:  simplifying candidates
* * * * [misc]progress:  [ 1 / 68 ] simplifiying candidate #<alt-delta (λ (a) (pow (/ (/ 1 (- (acos a))) (/ 1 a)) 1))>
* * * * [misc]progress:  [ 2 / 68 ] simplifiying candidate #<alt-delta (λ (a) (exp (- (- (log (- (acos a)))) (log (/ 1 a)))))>
* [enter]simplify:  Simplifying (- (- (log (- (acos a)))) (log (/ 1 a)))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (17 enodes)
* * [misc]simplify:  iters left: 4 (24 enodes)
* * [misc]simplify:  iters left: 3 (30 enodes)
* * [misc]simplify:  iters left: 2 (49 enodes)
* * [misc]simplify:  iters left: 1 (140 enodes)
* [exit]simplify:  Simplified to (- (log a) (log (- (acos a))))
* [exit]simplify:  Simplified to (- (log a) (log (- (acos a))))
* * * * [misc]progress:  [ 3 / 68 ] simplifiying candidate #<alt-delta (λ (a) (exp (- (log (/ 1 (- (acos a)))) (log (/ 1 a)))))>
* [enter]simplify:  Simplifying (- (log (/ 1 (- (acos a)))) (log (/ 1 a)))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (20 enodes)
* * [misc]simplify:  iters left: 4 (31 enodes)
* * [misc]simplify:  iters left: 3 (48 enodes)
* * [misc]simplify:  iters left: 2 (110 enodes)
* [exit]simplify:  Simplified to (- (log a) (log (- (acos a))))
* [exit]simplify:  Simplified to (- (log a) (log (- (acos a))))
* * * * [misc]progress:  [ 4 / 68 ] simplifiying candidate #<alt-delta (λ (a) (exp (log (/ (/ 1 (- (acos a))) (/ 1 a)))))>
* [enter]simplify:  Simplifying (log (/ (/ 1 (- (acos a))) (/ 1 a)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (17 enodes)
* * [misc]simplify:  iters left: 4 (43 enodes)
* * [misc]simplify:  iters left: 3 (83 enodes)
* * [misc]simplify:  iters left: 2 (147 enodes)
* * [misc]simplify:  iters left: 1 (292 enodes)
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* [exit]simplify:  Simplified to (log (/ a (- (acos a))))
* * * * [misc]progress:  [ 5 / 68 ] simplifiying candidate #<alt-delta (λ (a) (log (exp (/ (/ 1 (- (acos a))) (/ 1 a)))))>
* [enter]simplify:  Simplifying (exp (/ (/ 1 (- (acos a))) (/ 1 a)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* * [misc]simplify:  iters left: 4 (29 enodes)
* * [misc]simplify:  iters left: 3 (45 enodes)
* * [misc]simplify:  iters left: 2 (79 enodes)
* * [misc]simplify:  iters left: 1 (114 enodes)
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* [exit]simplify:  Simplified to (exp (/ a (- (acos a))))
* * * * [misc]progress:  [ 6 / 68 ] simplifiying candidate #<alt-delta (λ (a) (cbrt (/ (* (* (/ 1 (- (acos a))) (/ 1 (- (acos a)))) (/ 1 (- (acos a)))) (* (* (/ 1 a) (/ 1 a)) (/ 1 a)))))>
* [enter]simplify:  Simplifying (/ (* (* (/ 1 (- (acos a))) (/ 1 (- (acos a)))) (/ 1 (- (acos a)))) (* (* (/ 1 a) (/ 1 a)) (/ 1 a)))
* * [misc]simplify:  iters left: 6 (11 enodes)
* * [misc]simplify:  iters left: 5 (34 enodes)
* * [misc]simplify:  iters left: 4 (100 enodes)
* * [misc]simplify:  iters left: 3 (401 enodes)
* [exit]simplify:  Simplified to (pow (/ a (- (acos a))) 3)
* [exit]simplify:  Simplified to (pow (/ a (- (acos a))) 3)
* * * * [misc]progress:  [ 7 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (* (cbrt (/ (/ 1 (- (acos a))) (/ 1 a))) (cbrt (/ (/ 1 (- (acos a))) (/ 1 a)))) (cbrt (/ (/ 1 (- (acos a))) (/ 1 a)))))>
* [enter]simplify:  Simplifying (* (cbrt (/ (/ 1 (- (acos a))) (/ 1 a))) (cbrt (/ (/ 1 (- (acos a))) (/ 1 a))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* * [misc]simplify:  iters left: 4 (28 enodes)
* * [misc]simplify:  iters left: 3 (44 enodes)
* * [misc]simplify:  iters left: 2 (80 enodes)
* * [misc]simplify:  iters left: 1 (118 enodes)
* [exit]simplify:  Simplified to (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a)))))
* [exit]simplify:  Simplified to (* (cbrt (/ a (- (acos a)))) (cbrt (/ a (- (acos a)))))
* [enter]simplify:  Simplifying (cbrt (/ (/ 1 (- (acos a))) (/ 1 a)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* * [misc]simplify:  iters left: 4 (27 enodes)
* * [misc]simplify:  iters left: 3 (43 enodes)
* * [misc]simplify:  iters left: 2 (79 enodes)
* * [misc]simplify:  iters left: 1 (117 enodes)
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (cbrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 8 / 68 ] simplifiying candidate #<alt-delta (λ (a) (cbrt (* (* (/ (/ 1 (- (acos a))) (/ 1 a)) (/ (/ 1 (- (acos a))) (/ 1 a))) (/ (/ 1 (- (acos a))) (/ 1 a)))))>
* [enter]simplify:  Simplifying (* (* (/ (/ 1 (- (acos a))) (/ 1 a)) (/ (/ 1 (- (acos a))) (/ 1 a))) (/ (/ 1 (- (acos a))) (/ 1 a)))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (22 enodes)
* * [misc]simplify:  iters left: 4 (91 enodes)
* * [misc]simplify:  iters left: 3 (238 enodes)
* [exit]simplify:  Simplified to (pow (/ a (- (acos a))) 3)
* [exit]simplify:  Simplified to (pow (/ a (- (acos a))) 3)
* * * * [misc]progress:  [ 9 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (sqrt (/ (/ 1 (- (acos a))) (/ 1 a))) (sqrt (/ (/ 1 (- (acos a))) (/ 1 a)))))>
* [enter]simplify:  Simplifying (sqrt (/ (/ 1 (- (acos a))) (/ 1 a)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* * [misc]simplify:  iters left: 4 (27 enodes)
* * [misc]simplify:  iters left: 3 (43 enodes)
* * [misc]simplify:  iters left: 2 (79 enodes)
* * [misc]simplify:  iters left: 1 (117 enodes)
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [enter]simplify:  Simplifying (sqrt (/ (/ 1 (- (acos a))) (/ 1 a)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* * [misc]simplify:  iters left: 4 (27 enodes)
* * [misc]simplify:  iters left: 3 (43 enodes)
* * [misc]simplify:  iters left: 2 (79 enodes)
* * [misc]simplify:  iters left: 1 (117 enodes)
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ a (- (acos a))))
* * * * [misc]progress:  [ 10 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (- (/ 1 (- (acos a)))) (- (/ 1 a))))>
* [enter]simplify:  Simplifying (- (/ 1 (- (acos a))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* [exit]simplify:  Simplified to (/ (- 1) (- (acos a)))
* [exit]simplify:  Simplified to (/ (- 1) (- (acos a)))
* [enter]simplify:  Simplifying (- (/ 1 a))
* * [misc]simplify:  iters left: 4 (4 enodes)
* * [misc]simplify:  iters left: 3 (8 enodes)
* [exit]simplify:  Simplified to (/ (- 1) a)
* [exit]simplify:  Simplified to (/ (- 1) a)
* * * * [misc]progress:  [ 11 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ (* (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 (- (acos a))))) (* (cbrt (/ 1 a)) (cbrt (/ 1 a)))) (/ (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 a)))))>
* [enter]simplify:  Simplifying (/ (* (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 (- (acos a))))) (* (cbrt (/ 1 a)) (cbrt (/ 1 a))))
* * [misc]simplify:  iters left: 6 (11 enodes)
* * [misc]simplify:  iters left: 5 (19 enodes)
* * [misc]simplify:  iters left: 4 (28 enodes)
* * [misc]simplify:  iters left: 3 (31 enodes)
* * [misc]simplify:  iters left: 2 (34 enodes)
* [exit]simplify:  Simplified to (* (/ (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 a))) (/ (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 a))))
* [exit]simplify:  Simplified to (* (/ (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 a))) (/ (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 a))))
* [enter]simplify:  Simplifying (/ (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 a)))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* [exit]simplify:  Simplified to (/ (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 a)))
* [exit]simplify:  Simplified to (/ (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 a)))
* * * * [misc]progress:  [ 12 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ (* (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 (- (acos a))))) (sqrt (/ 1 a))) (/ (cbrt (/ 1 (- (acos a)))) (sqrt (/ 1 a)))))>
* [enter]simplify:  Simplifying (/ (* (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 (- (acos a))))) (sqrt (/ 1 a)))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* * [misc]simplify:  iters left: 4 (16 enodes)
* * [misc]simplify:  iters left: 3 (17 enodes)
* [exit]simplify:  Simplified to (* (cbrt (/ 1 (- (acos a)))) (/ (cbrt (/ 1 (- (acos a)))) (sqrt (/ 1 a))))
* [exit]simplify:  Simplified to (* (cbrt (/ 1 (- (acos a)))) (/ (cbrt (/ 1 (- (acos a)))) (sqrt (/ 1 a))))
* [enter]simplify:  Simplifying (/ (cbrt (/ 1 (- (acos a)))) (sqrt (/ 1 a)))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* [exit]simplify:  Simplified to (/ (cbrt (/ 1 (- (acos a)))) (sqrt (/ 1 a)))
* [exit]simplify:  Simplified to (/ (cbrt (/ 1 (- (acos a)))) (sqrt (/ 1 a)))
* * * * [misc]progress:  [ 13 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ (* (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 (- (acos a))))) 1) (/ (cbrt (/ 1 (- (acos a)))) (/ 1 a))))>
* [enter]simplify:  Simplifying (/ (* (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 (- (acos a))))) 1)
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (18 enodes)
* * [misc]simplify:  iters left: 3 (23 enodes)
* * [misc]simplify:  iters left: 2 (33 enodes)
* [exit]simplify:  Simplified to (* (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 (- (acos a)))))
* [exit]simplify:  Simplified to (* (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 (- (acos a)))))
* [enter]simplify:  Simplifying (/ (cbrt (/ 1 (- (acos a)))) (/ 1 a))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (15 enodes)
* * [misc]simplify:  iters left: 3 (25 enodes)
* * [misc]simplify:  iters left: 2 (27 enodes)
* * [misc]simplify:  iters left: 1 (32 enodes)
* [exit]simplify:  Simplified to (* (cbrt (/ 1 (- (acos a)))) a)
* [exit]simplify:  Simplified to (* (cbrt (/ 1 (- (acos a)))) a)
* * * * [misc]progress:  [ 14 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ (* (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 (- (acos a))))) 1) (/ (cbrt (/ 1 (- (acos a)))) (/ 1 a))))>
* [enter]simplify:  Simplifying (/ (* (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 (- (acos a))))) 1)
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (18 enodes)
* * [misc]simplify:  iters left: 3 (23 enodes)
* * [misc]simplify:  iters left: 2 (33 enodes)
* [exit]simplify:  Simplified to (* (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 (- (acos a)))))
* [exit]simplify:  Simplified to (* (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 (- (acos a)))))
* [enter]simplify:  Simplifying (/ (cbrt (/ 1 (- (acos a)))) (/ 1 a))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (15 enodes)
* * [misc]simplify:  iters left: 3 (25 enodes)
* * [misc]simplify:  iters left: 2 (27 enodes)
* * [misc]simplify:  iters left: 1 (32 enodes)
* [exit]simplify:  Simplified to (* (cbrt (/ 1 (- (acos a)))) a)
* [exit]simplify:  Simplified to (* (cbrt (/ 1 (- (acos a)))) a)
* * * * [misc]progress:  [ 15 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ (sqrt (/ 1 (- (acos a)))) (* (cbrt (/ 1 a)) (cbrt (/ 1 a)))) (/ (sqrt (/ 1 (- (acos a)))) (cbrt (/ 1 a)))))>
* [enter]simplify:  Simplifying (/ (sqrt (/ 1 (- (acos a)))) (* (cbrt (/ 1 a)) (cbrt (/ 1 a))))
* * [misc]simplify:  iters left: 6 (10 enodes)
* * [misc]simplify:  iters left: 5 (14 enodes)
* [exit]simplify:  Simplified to (/ (sqrt (/ 1 (- (acos a)))) (* (cbrt (/ 1 a)) (cbrt (/ 1 a))))
* [exit]simplify:  Simplified to (/ (sqrt (/ 1 (- (acos a)))) (* (cbrt (/ 1 a)) (cbrt (/ 1 a))))
* [enter]simplify:  Simplifying (/ (sqrt (/ 1 (- (acos a)))) (cbrt (/ 1 a)))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* [exit]simplify:  Simplified to (/ (sqrt (/ 1 (- (acos a)))) (cbrt (/ 1 a)))
* [exit]simplify:  Simplified to (/ (sqrt (/ 1 (- (acos a)))) (cbrt (/ 1 a)))
* * * * [misc]progress:  [ 16 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ (sqrt (/ 1 (- (acos a)))) (sqrt (/ 1 a))) (/ (sqrt (/ 1 (- (acos a)))) (sqrt (/ 1 a)))))>
* [enter]simplify:  Simplifying (/ (sqrt (/ 1 (- (acos a)))) (sqrt (/ 1 a)))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* [exit]simplify:  Simplified to (/ (sqrt (/ 1 (- (acos a)))) (sqrt (/ 1 a)))
* [exit]simplify:  Simplified to (/ (sqrt (/ 1 (- (acos a)))) (sqrt (/ 1 a)))
* [enter]simplify:  Simplifying (/ (sqrt (/ 1 (- (acos a)))) (sqrt (/ 1 a)))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* [exit]simplify:  Simplified to (/ (sqrt (/ 1 (- (acos a)))) (sqrt (/ 1 a)))
* [exit]simplify:  Simplified to (/ (sqrt (/ 1 (- (acos a)))) (sqrt (/ 1 a)))
* * * * [misc]progress:  [ 17 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ (sqrt (/ 1 (- (acos a)))) 1) (/ (sqrt (/ 1 (- (acos a)))) (/ 1 a))))>
* [enter]simplify:  Simplifying (/ (sqrt (/ 1 (- (acos a)))) 1)
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (9 enodes)
* * [misc]simplify:  iters left: 4 (11 enodes)
* [exit]simplify:  Simplified to (sqrt (/ 1 (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ 1 (- (acos a))))
* [enter]simplify:  Simplifying (/ (sqrt (/ 1 (- (acos a)))) (/ 1 a))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (15 enodes)
* * [misc]simplify:  iters left: 3 (25 enodes)
* * [misc]simplify:  iters left: 2 (27 enodes)
* * [misc]simplify:  iters left: 1 (32 enodes)
* [exit]simplify:  Simplified to (* (sqrt (/ 1 (- (acos a)))) a)
* [exit]simplify:  Simplified to (* (sqrt (/ 1 (- (acos a)))) a)
* * * * [misc]progress:  [ 18 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ (sqrt (/ 1 (- (acos a)))) 1) (/ (sqrt (/ 1 (- (acos a)))) (/ 1 a))))>
* [enter]simplify:  Simplifying (/ (sqrt (/ 1 (- (acos a)))) 1)
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (9 enodes)
* * [misc]simplify:  iters left: 4 (11 enodes)
* [exit]simplify:  Simplified to (sqrt (/ 1 (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ 1 (- (acos a))))
* [enter]simplify:  Simplifying (/ (sqrt (/ 1 (- (acos a)))) (/ 1 a))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (15 enodes)
* * [misc]simplify:  iters left: 3 (25 enodes)
* * [misc]simplify:  iters left: 2 (27 enodes)
* * [misc]simplify:  iters left: 1 (32 enodes)
* [exit]simplify:  Simplified to (* (sqrt (/ 1 (- (acos a)))) a)
* [exit]simplify:  Simplified to (* (sqrt (/ 1 (- (acos a)))) a)
* * * * [misc]progress:  [ 19 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ 1 (* (cbrt (/ 1 a)) (cbrt (/ 1 a)))) (/ (/ 1 (- (acos a))) (cbrt (/ 1 a)))))>
* [enter]simplify:  Simplifying (/ 1 (* (cbrt (/ 1 a)) (cbrt (/ 1 a))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* [exit]simplify:  Simplified to (/ 1 (* (cbrt (/ 1 a)) (cbrt (/ 1 a))))
* [exit]simplify:  Simplified to (/ 1 (* (cbrt (/ 1 a)) (cbrt (/ 1 a))))
* [enter]simplify:  Simplifying (/ (/ 1 (- (acos a))) (cbrt (/ 1 a)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (17 enodes)
* * [misc]simplify:  iters left: 3 (21 enodes)
* * [misc]simplify:  iters left: 2 (22 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 (cbrt (/ 1 a))) (- (acos a)))
* [exit]simplify:  Simplified to (/ (/ 1 (cbrt (/ 1 a))) (- (acos a)))
* * * * [misc]progress:  [ 20 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ 1 (sqrt (/ 1 a))) (/ (/ 1 (- (acos a))) (sqrt (/ 1 a)))))>
* [enter]simplify:  Simplifying (/ 1 (sqrt (/ 1 a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (7 enodes)
* [exit]simplify:  Simplified to (/ 1 (sqrt (/ 1 a)))
* [exit]simplify:  Simplified to (/ 1 (sqrt (/ 1 a)))
* [enter]simplify:  Simplifying (/ (/ 1 (- (acos a))) (sqrt (/ 1 a)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (17 enodes)
* * [misc]simplify:  iters left: 3 (21 enodes)
* * [misc]simplify:  iters left: 2 (22 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 (sqrt (/ 1 a))) (- (acos a)))
* [exit]simplify:  Simplified to (/ (/ 1 (sqrt (/ 1 a))) (- (acos a)))
* * * * [misc]progress:  [ 21 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ 1 1) (/ (/ 1 (- (acos a))) (/ 1 a))))>
* [enter]simplify:  Simplifying (/ 1 1)
* * [misc]simplify:  iters left: 2 (2 enodes)
* * [misc]simplify:  iters left: 1 (4 enodes)
* [exit]simplify:  Simplified to 1
* [exit]simplify:  Simplified to 1
* [enter]simplify:  Simplifying (/ (/ 1 (- (acos a))) (/ 1 a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (26 enodes)
* * [misc]simplify:  iters left: 3 (42 enodes)
* * [misc]simplify:  iters left: 2 (76 enodes)
* * [misc]simplify:  iters left: 1 (111 enodes)
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* * * * [misc]progress:  [ 22 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ 1 1) (/ (/ 1 (- (acos a))) (/ 1 a))))>
* [enter]simplify:  Simplifying (/ 1 1)
* * [misc]simplify:  iters left: 2 (2 enodes)
* * [misc]simplify:  iters left: 1 (4 enodes)
* [exit]simplify:  Simplified to 1
* [exit]simplify:  Simplified to 1
* [enter]simplify:  Simplifying (/ (/ 1 (- (acos a))) (/ 1 a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (26 enodes)
* * [misc]simplify:  iters left: 3 (42 enodes)
* * [misc]simplify:  iters left: 2 (76 enodes)
* * [misc]simplify:  iters left: 1 (111 enodes)
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* * * * [misc]progress:  [ 23 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ 1 (* (cbrt (/ 1 a)) (cbrt (/ 1 a)))) (/ (/ 1 (- (acos a))) (cbrt (/ 1 a)))))>
* [enter]simplify:  Simplifying (/ 1 (* (cbrt (/ 1 a)) (cbrt (/ 1 a))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* [exit]simplify:  Simplified to (/ 1 (* (cbrt (/ 1 a)) (cbrt (/ 1 a))))
* [exit]simplify:  Simplified to (/ 1 (* (cbrt (/ 1 a)) (cbrt (/ 1 a))))
* [enter]simplify:  Simplifying (/ (/ 1 (- (acos a))) (cbrt (/ 1 a)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (17 enodes)
* * [misc]simplify:  iters left: 3 (21 enodes)
* * [misc]simplify:  iters left: 2 (22 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 (cbrt (/ 1 a))) (- (acos a)))
* [exit]simplify:  Simplified to (/ (/ 1 (cbrt (/ 1 a))) (- (acos a)))
* * * * [misc]progress:  [ 24 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ 1 (sqrt (/ 1 a))) (/ (/ 1 (- (acos a))) (sqrt (/ 1 a)))))>
* [enter]simplify:  Simplifying (/ 1 (sqrt (/ 1 a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (7 enodes)
* [exit]simplify:  Simplified to (/ 1 (sqrt (/ 1 a)))
* [exit]simplify:  Simplified to (/ 1 (sqrt (/ 1 a)))
* [enter]simplify:  Simplifying (/ (/ 1 (- (acos a))) (sqrt (/ 1 a)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (17 enodes)
* * [misc]simplify:  iters left: 3 (21 enodes)
* * [misc]simplify:  iters left: 2 (22 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 (sqrt (/ 1 a))) (- (acos a)))
* [exit]simplify:  Simplified to (/ (/ 1 (sqrt (/ 1 a))) (- (acos a)))
* * * * [misc]progress:  [ 25 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ 1 1) (/ (/ 1 (- (acos a))) (/ 1 a))))>
* [enter]simplify:  Simplifying (/ 1 1)
* * [misc]simplify:  iters left: 2 (2 enodes)
* * [misc]simplify:  iters left: 1 (4 enodes)
* [exit]simplify:  Simplified to 1
* [exit]simplify:  Simplified to 1
* [enter]simplify:  Simplifying (/ (/ 1 (- (acos a))) (/ 1 a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (26 enodes)
* * [misc]simplify:  iters left: 3 (42 enodes)
* * [misc]simplify:  iters left: 2 (76 enodes)
* * [misc]simplify:  iters left: 1 (111 enodes)
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* * * * [misc]progress:  [ 26 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ 1 1) (/ (/ 1 (- (acos a))) (/ 1 a))))>
* [enter]simplify:  Simplifying (/ 1 1)
* * [misc]simplify:  iters left: 2 (2 enodes)
* * [misc]simplify:  iters left: 1 (4 enodes)
* [exit]simplify:  Simplified to 1
* [exit]simplify:  Simplified to 1
* [enter]simplify:  Simplifying (/ (/ 1 (- (acos a))) (/ 1 a))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (26 enodes)
* * [misc]simplify:  iters left: 3 (42 enodes)
* * [misc]simplify:  iters left: 2 (76 enodes)
* * [misc]simplify:  iters left: 1 (111 enodes)
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* * * * [misc]progress:  [ 27 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* 1 (/ (/ 1 (- (acos a))) (/ 1 a))))>
* * * * [misc]progress:  [ 28 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ 1 (- (acos a))) (/ 1 (/ 1 a))))>
* [enter]simplify:  Simplifying (/ 1 (/ 1 a))
* * [misc]simplify:  iters left: 4 (4 enodes)
* * [misc]simplify:  iters left: 3 (6 enodes)
* [exit]simplify:  Simplified to a
* [exit]simplify:  Simplified to a
* * * * [misc]progress:  [ 29 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ (/ 1 a) (/ 1 (- (acos a))))))>
* [enter]simplify:  Simplifying (/ (/ 1 a) (/ 1 (- (acos a))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (26 enodes)
* * [misc]simplify:  iters left: 3 (43 enodes)
* * [misc]simplify:  iters left: 2 (77 enodes)
* * [misc]simplify:  iters left: 1 (119 enodes)
* [exit]simplify:  Simplified to (- (/ (acos a) a))
* [exit]simplify:  Simplified to (- (/ (acos a) a))
* * * * [misc]progress:  [ 30 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ (/ 1 (- (acos a))) (* (cbrt (/ 1 a)) (cbrt (/ 1 a)))) (cbrt (/ 1 a))))>
* [enter]simplify:  Simplifying (/ (/ 1 (- (acos a))) (* (cbrt (/ 1 a)) (cbrt (/ 1 a))))
* * [misc]simplify:  iters left: 6 (9 enodes)
* * [misc]simplify:  iters left: 5 (15 enodes)
* * [misc]simplify:  iters left: 4 (23 enodes)
* * [misc]simplify:  iters left: 3 (35 enodes)
* * [misc]simplify:  iters left: 2 (46 enodes)
* * [misc]simplify:  iters left: 1 (51 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 (- (acos a))) (* (cbrt (/ 1 a)) (cbrt (/ 1 a))))
* [exit]simplify:  Simplified to (/ (/ 1 (- (acos a))) (* (cbrt (/ 1 a)) (cbrt (/ 1 a))))
* * * * [misc]progress:  [ 31 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ (/ 1 (- (acos a))) (sqrt (/ 1 a))) (sqrt (/ 1 a))))>
* [enter]simplify:  Simplifying (/ (/ 1 (- (acos a))) (sqrt (/ 1 a)))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (17 enodes)
* * [misc]simplify:  iters left: 3 (21 enodes)
* * [misc]simplify:  iters left: 2 (22 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 (sqrt (/ 1 a))) (- (acos a)))
* [exit]simplify:  Simplified to (/ (/ 1 (sqrt (/ 1 a))) (- (acos a)))
* * * * [misc]progress:  [ 32 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ (/ 1 (- (acos a))) 1) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ (/ 1 (- (acos a))) 1)
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* * [misc]simplify:  iters left: 4 (15 enodes)
* * [misc]simplify:  iters left: 3 (25 enodes)
* * [misc]simplify:  iters left: 2 (30 enodes)
* * [misc]simplify:  iters left: 1 (32 enodes)
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* * * * [misc]progress:  [ 33 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ (/ 1 (- (acos a))) 1) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ (/ 1 (- (acos a))) 1)
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* * [misc]simplify:  iters left: 4 (15 enodes)
* * [misc]simplify:  iters left: 3 (25 enodes)
* * [misc]simplify:  iters left: 2 (30 enodes)
* * [misc]simplify:  iters left: 1 (32 enodes)
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* * * * [misc]progress:  [ 34 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (* (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 (- (acos a))))) (/ (/ 1 a) (cbrt (/ 1 (- (acos a)))))))>
* [enter]simplify:  Simplifying (/ (/ 1 a) (cbrt (/ 1 (- (acos a)))))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (15 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 a) (cbrt (/ 1 (- (acos a)))))
* [exit]simplify:  Simplified to (/ (/ 1 a) (cbrt (/ 1 (- (acos a)))))
* * * * [misc]progress:  [ 35 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (sqrt (/ 1 (- (acos a)))) (/ (/ 1 a) (sqrt (/ 1 (- (acos a)))))))>
* [enter]simplify:  Simplifying (/ (/ 1 a) (sqrt (/ 1 (- (acos a)))))
* * [misc]simplify:  iters left: 6 (8 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (15 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 a) (sqrt (/ 1 (- (acos a)))))
* [exit]simplify:  Simplified to (/ (/ 1 a) (sqrt (/ 1 (- (acos a)))))
* * * * [misc]progress:  [ 36 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ (/ 1 a) (/ 1 (- (acos a))))))>
* [enter]simplify:  Simplifying (/ (/ 1 a) (/ 1 (- (acos a))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (26 enodes)
* * [misc]simplify:  iters left: 3 (43 enodes)
* * [misc]simplify:  iters left: 2 (77 enodes)
* * [misc]simplify:  iters left: 1 (119 enodes)
* [exit]simplify:  Simplified to (- (/ (acos a) a))
* [exit]simplify:  Simplified to (- (/ (acos a) a))
* * * * [misc]progress:  [ 37 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (/ (/ 1 a) (/ 1 (- (acos a))))))>
* [enter]simplify:  Simplifying (/ (/ 1 a) (/ 1 (- (acos a))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (13 enodes)
* * [misc]simplify:  iters left: 4 (26 enodes)
* * [misc]simplify:  iters left: 3 (43 enodes)
* * [misc]simplify:  iters left: 2 (77 enodes)
* * [misc]simplify:  iters left: 1 (119 enodes)
* [exit]simplify:  Simplified to (- (/ (acos a) a))
* [exit]simplify:  Simplified to (- (/ (acos a) a))
* * * * [misc]progress:  [ 38 / 68 ] simplifiying candidate #<alt-delta (λ (a) (* (/ (/ 1 (- (acos a))) 1) a))>
* [enter]simplify:  Simplifying (/ (/ 1 (- (acos a))) 1)
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* * [misc]simplify:  iters left: 4 (15 enodes)
* * [misc]simplify:  iters left: 3 (25 enodes)
* * [misc]simplify:  iters left: 2 (30 enodes)
* * [misc]simplify:  iters left: 1 (32 enodes)
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* * * * [misc]progress:  [ 39 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ 1 (* (/ 1 a) (- (acos a)))))>
* [enter]simplify:  Simplifying (* (/ 1 a) (- (acos a)))
* * [misc]simplify:  iters left: 5 (6 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* * [misc]simplify:  iters left: 3 (23 enodes)
* * [misc]simplify:  iters left: 2 (51 enodes)
* * [misc]simplify:  iters left: 1 (72 enodes)
* [exit]simplify:  Simplified to (/ (- (acos a)) a)
* [exit]simplify:  Simplified to (/ (- (acos a)) a)
* * * * [misc]progress:  [ 40 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (pow (- (acos a)) -1) (/ 1 a)))>
* * * * [misc]progress:  [ 41 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (pow (- (acos a)) (- 1)) (/ 1 a)))>
* [enter]simplify:  Simplifying (- 1)
* * [misc]simplify:  iters left: 2 (2 enodes)
* * [misc]simplify:  iters left: 1 (4 enodes)
* [exit]simplify:  Simplified to (- 1)
* [exit]simplify:  Simplified to (- 1)
* * * * [misc]progress:  [ 42 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (pow (/ 1 (- (acos a))) 1) (/ 1 a)))>
* * * * [misc]progress:  [ 43 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (exp (- (log (- (acos a))))) (/ 1 a)))>
* [enter]simplify:  Simplifying (- (log (- (acos a))))
* * [misc]simplify:  iters left: 6 (5 enodes)
* [exit]simplify:  Simplified to (- (log (- (acos a))))
* [exit]simplify:  Simplified to (- (log (- (acos a))))
* * * * [misc]progress:  [ 44 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (exp (log (/ 1 (- (acos a))))) (/ 1 a)))>
* [enter]simplify:  Simplifying (log (/ 1 (- (acos a))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* * [misc]simplify:  iters left: 3 (17 enodes)
* * [misc]simplify:  iters left: 2 (30 enodes)
* * [misc]simplify:  iters left: 1 (72 enodes)
* [exit]simplify:  Simplified to (- (log (- (acos a))))
* [exit]simplify:  Simplified to (- (log (- (acos a))))
* * * * [misc]progress:  [ 45 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (log (exp (/ 1 (- (acos a))))) (/ 1 a)))>
* [enter]simplify:  Simplifying (exp (/ 1 (- (acos a))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* [exit]simplify:  Simplified to (exp (/ 1 (- (acos a))))
* [exit]simplify:  Simplified to (exp (/ 1 (- (acos a))))
* * * * [misc]progress:  [ 46 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (* (* (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 (- (acos a))))) (cbrt (/ 1 (- (acos a))))) (/ 1 a)))>
* [enter]simplify:  Simplifying (* (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 (- (acos a)))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (9 enodes)
* [exit]simplify:  Simplified to (* (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 (- (acos a)))))
* [exit]simplify:  Simplified to (* (cbrt (/ 1 (- (acos a)))) (cbrt (/ 1 (- (acos a)))))
* [enter]simplify:  Simplifying (cbrt (/ 1 (- (acos a))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* [exit]simplify:  Simplified to (cbrt (/ 1 (- (acos a))))
* [exit]simplify:  Simplified to (cbrt (/ 1 (- (acos a))))
* * * * [misc]progress:  [ 47 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (cbrt (* (* (/ 1 (- (acos a))) (/ 1 (- (acos a)))) (/ 1 (- (acos a))))) (/ 1 a)))>
* [enter]simplify:  Simplifying (* (* (/ 1 (- (acos a))) (/ 1 (- (acos a)))) (/ 1 (- (acos a))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (16 enodes)
* * [misc]simplify:  iters left: 4 (26 enodes)
* * [misc]simplify:  iters left: 3 (39 enodes)
* * [misc]simplify:  iters left: 2 (62 enodes)
* * [misc]simplify:  iters left: 1 (87 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 (- (acos a))) (* (acos a) (acos a)))
* [exit]simplify:  Simplified to (/ (/ 1 (- (acos a))) (* (acos a) (acos a)))
* * * * [misc]progress:  [ 48 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (* (sqrt (/ 1 (- (acos a)))) (sqrt (/ 1 (- (acos a))))) (/ 1 a)))>
* [enter]simplify:  Simplifying (sqrt (/ 1 (- (acos a))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* [exit]simplify:  Simplified to (sqrt (/ 1 (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ 1 (- (acos a))))
* [enter]simplify:  Simplifying (sqrt (/ 1 (- (acos a))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* [exit]simplify:  Simplified to (sqrt (/ 1 (- (acos a))))
* [exit]simplify:  Simplified to (sqrt (/ 1 (- (acos a))))
* * * * [misc]progress:  [ 49 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ (- 1) (- (- (acos a)))) (/ 1 a)))>
* [enter]simplify:  Simplifying (- 1)
* * [misc]simplify:  iters left: 2 (2 enodes)
* * [misc]simplify:  iters left: 1 (4 enodes)
* [exit]simplify:  Simplified to (- 1)
* [exit]simplify:  Simplified to (- 1)
* [enter]simplify:  Simplifying (- (- (acos a)))
* * [misc]simplify:  iters left: 5 (4 enodes)
* [exit]simplify:  Simplified to (acos a)
* [exit]simplify:  Simplified to (acos a)
* * * * [misc]progress:  [ 50 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (* 1 (/ 1 (- (acos a)))) (/ 1 a)))>
* * * * [misc]progress:  [ 51 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (* 1 (/ 1 (- (acos a)))) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ 1 (- (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (7 enodes)
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* [exit]simplify:  Simplified to (/ 1 (- (acos a)))
* * * * [misc]progress:  [ 52 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ 1 (/ (- (acos a)) 1)) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ (- (acos a)) 1)
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* * [misc]simplify:  iters left: 3 (11 enodes)
* * [misc]simplify:  iters left: 2 (16 enodes)
* [exit]simplify:  Simplified to (- (acos a))
* [exit]simplify:  Simplified to (- (acos a))
* * * * [misc]progress:  [ 53 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ (/ 1 (* (cbrt (- (acos a))) (cbrt (- (acos a))))) (cbrt (- (acos a)))) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ 1 (* (cbrt (- (acos a))) (cbrt (- (acos a)))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (11 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 (cbrt (- (acos a)))) (cbrt (- (acos a))))
* [exit]simplify:  Simplified to (/ (/ 1 (cbrt (- (acos a)))) (cbrt (- (acos a))))
* * * * [misc]progress:  [ 54 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ (/ 1 (sqrt (- (acos a)))) (sqrt (- (acos a)))) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ 1 (sqrt (- (acos a))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* [exit]simplify:  Simplified to (/ 1 (sqrt (- (acos a))))
* [exit]simplify:  Simplified to (/ 1 (sqrt (- (acos a))))
* * * * [misc]progress:  [ 55 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ (/ 1 1) (- (acos a))) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ 1 1)
* * [misc]simplify:  iters left: 2 (2 enodes)
* * [misc]simplify:  iters left: 1 (4 enodes)
* [exit]simplify:  Simplified to 1
* [exit]simplify:  Simplified to 1
* * * * [misc]progress:  [ 56 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ (/ 1 -1) (acos a)) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ 1 -1)
* * [misc]simplify:  iters left: 2 (3 enodes)
* * [misc]simplify:  iters left: 1 (5 enodes)
* [exit]simplify:  Simplified to (/ 1 -1)
* [exit]simplify:  Simplified to (/ 1 -1)
* * * * [misc]progress:  [ 57 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ (/ 1 (- (* (cbrt (acos a)) (cbrt (acos a))))) (cbrt (acos a))) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ 1 (- (* (cbrt (acos a)) (cbrt (acos a)))))
* * [misc]simplify:  iters left: 6 (7 enodes)
* * [misc]simplify:  iters left: 5 (12 enodes)
* * [misc]simplify:  iters left: 4 (16 enodes)
* [exit]simplify:  Simplified to (/ (/ 1 (cbrt (acos a))) (- (cbrt (acos a))))
* [exit]simplify:  Simplified to (/ (/ 1 (cbrt (acos a))) (- (cbrt (acos a))))
* * * * [misc]progress:  [ 58 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ (/ 1 (- (sqrt (acos a)))) (sqrt (acos a))) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ 1 (- (sqrt (acos a))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (8 enodes)
* [exit]simplify:  Simplified to (/ 1 (- (sqrt (acos a))))
* [exit]simplify:  Simplified to (/ 1 (- (sqrt (acos a))))
* * * * [misc]progress:  [ 59 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ (/ 1 (- 1)) (acos a)) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ 1 (- 1))
* * [misc]simplify:  iters left: 4 (3 enodes)
* * [misc]simplify:  iters left: 3 (5 enodes)
* [exit]simplify:  Simplified to (/ 1 (- 1))
* [exit]simplify:  Simplified to (/ 1 (- 1))
* * * * [misc]progress:  [ 60 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ (/ 1 (* (cbrt (acos a)) (cbrt (acos a)))) (- (cbrt (acos a)))) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ 1 (* (cbrt (acos a)) (cbrt (acos a))))
* * [misc]simplify:  iters left: 6 (6 enodes)
* * [misc]simplify:  iters left: 5 (10 enodes)
* [exit]simplify:  Simplified to (/ 1 (* (cbrt (acos a)) (cbrt (acos a))))
* [exit]simplify:  Simplified to (/ 1 (* (cbrt (acos a)) (cbrt (acos a))))
* * * * [misc]progress:  [ 61 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ (/ 1 (sqrt (acos a))) (- (sqrt (acos a)))) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ 1 (sqrt (acos a)))
* * [misc]simplify:  iters left: 4 (5 enodes)
* * [misc]simplify:  iters left: 3 (7 enodes)
* [exit]simplify:  Simplified to (/ 1 (sqrt (acos a)))
* [exit]simplify:  Simplified to (/ 1 (sqrt (acos a)))
* * * * [misc]progress:  [ 62 / 68 ] simplifiying candidate #<alt-delta (λ (a) (/ (/ (/ 1 1) (- (acos a))) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ 1 1)
* * [misc]simplify:  iters left: 2 (2 enodes)
* * [misc]simplify:  iters left: 1 (4 enodes)
* [exit]simplify:  Simplified to 1
* [exit]simplify:  Simplified to 1
* * * * [misc]progress:  [ 63 / 68 ] simplifiying candidate #<alt-event (λ (a) (* -1 (/ a (acos a))))>
* [enter]simplify:  Simplifying (* -1 (/ a (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* * [misc]simplify:  iters left: 3 (14 enodes)
* * [misc]simplify:  iters left: 2 (16 enodes)
* * [misc]simplify:  iters left: 1 (18 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 64 / 68 ] simplifiying candidate #<alt-event (λ (a) (* -1 (/ a (acos a))))>
* [enter]simplify:  Simplifying (* -1 (/ a (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* * [misc]simplify:  iters left: 3 (14 enodes)
* * [misc]simplify:  iters left: 2 (16 enodes)
* * [misc]simplify:  iters left: 1 (18 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 65 / 68 ] simplifiying candidate #<alt-event (λ (a) (* -1 (/ a (acos a))))>
* [enter]simplify:  Simplifying (* -1 (/ a (acos a)))
* * [misc]simplify:  iters left: 5 (5 enodes)
* * [misc]simplify:  iters left: 4 (9 enodes)
* * [misc]simplify:  iters left: 3 (14 enodes)
* * [misc]simplify:  iters left: 2 (16 enodes)
* * [misc]simplify:  iters left: 1 (18 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 66 / 68 ] simplifiying candidate #<alt-event (λ (a) (/ (/ -1 (acos a)) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ (/ -1 (acos a)) (/ 1 a))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* * [misc]simplify:  iters left: 3 (24 enodes)
* * [misc]simplify:  iters left: 2 (42 enodes)
* * [misc]simplify:  iters left: 1 (60 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 67 / 68 ] simplifiying candidate #<alt-event (λ (a) (/ (/ -1 (acos a)) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ (/ -1 (acos a)) (/ 1 a))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* * [misc]simplify:  iters left: 3 (24 enodes)
* * [misc]simplify:  iters left: 2 (42 enodes)
* * [misc]simplify:  iters left: 1 (60 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * * [misc]progress:  [ 68 / 68 ] simplifiying candidate #<alt-event (λ (a) (/ (/ -1 (acos a)) (/ 1 a)))>
* [enter]simplify:  Simplifying (/ (/ -1 (acos a)) (/ 1 a))
* * [misc]simplify:  iters left: 5 (7 enodes)
* * [misc]simplify:  iters left: 4 (13 enodes)
* * [misc]simplify:  iters left: 3 (24 enodes)
* * [misc]simplify:  iters left: 2 (42 enodes)
* * [misc]simplify:  iters left: 1 (60 enodes)
* [exit]simplify:  Simplified to (/ (- a) (acos a))
* * * [misc]progress:  adding candidates to table
* [misc]progress:  [Phase 3 of 3] Extracting.
* * [misc]regime-changes:  Finding splitpoints for: (#<alt-delta (λ (a) (* (sqrt (/ a (- (acos a)))) (sqrt (/ a (- (acos a))))))> #<alt-delta (λ (a) (/ (/ 1 (- (acos a))) (/ 1 a)))> #<alt-event (λ (a) (/ a (- (acos a))))> #<alt-delta (λ (a) (/ 1 (* (- (acos a)) (/ 1 a))))> #<alt-delta (λ (a) (/ 1 (* (* (- (acos a)) (* (cbrt (/ 1 a)) (cbrt (/ 1 a)))) (cbrt (/ 1 a)))))> #<alt-delta (λ (a) (/ (/ 1 (* (cbrt (/ (- (acos a)) a)) (cbrt (/ (- (acos a)) a)))) (cbrt (/ (- (acos a)) a))))> #<alt-delta (λ (a) (/ (/ (/ 1 (- (acos a))) (sqrt (/ 1 a))) (sqrt (/ 1 a))))> #<alt-delta (λ (a) (/ (cbrt (/ (/ 1 (- (acos a))) (* (acos a) (acos a)))) (/ 1 a)))>)
* [misc]regimes:  Found splitpoints: (#s(sp 0 (/ a (- (acos a))) +nan.0)) , with alts (#<alt-event (λ (a) (/ a (- (acos a))))>)
* [enter]simplify:  Simplifying (/ a (- (acos a)))
* * [misc]simplify:  iters left: 5 (4 enodes)
* [exit]simplify:  Simplified to (/ a (- (acos a)))
* * * * [misc]points:  Sampling 8000 additional inputs, on iter 0 have 0 / 8000
* * * * [misc]points:  Computing exacts on every 500 of 8000 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts on every 250 of 8000 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts on every 125 of 8000 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts on every 62 of 8000 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts on every 31 of 8000 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts on every 15 of 8000 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts on every 7 of 8000 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts on every 3 of 8000 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Computing exacts for 8000 points
* * * * [misc]points:  Setting MPFR precision to 64
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 4008 additional inputs, on iter 1 have 3992 / 8000
* * * * [misc]points:  Computing exacts on every 250 of 4008 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 125 of 4008 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 62 of 4008 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 31 of 4008 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 15 of 4008 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 7 of 4008 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 3 of 4008 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts for 4008 points
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 2022 additional inputs, on iter 2 have 5978 / 8000
* * * * [misc]points:  Computing exacts on every 126 of 2022 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 63 of 2022 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 31 of 2022 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 15 of 2022 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 7 of 2022 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 3 of 2022 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts for 2022 points
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 1005 additional inputs, on iter 3 have 6995 / 8000
* * * * [misc]points:  Computing exacts on every 62 of 1005 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 31 of 1005 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 15 of 1005 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 7 of 1005 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 3 of 1005 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts for 1005 points
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 498 additional inputs, on iter 4 have 7502 / 8000
* * * * [misc]points:  Computing exacts on every 31 of 498 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 15 of 498 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 7 of 498 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 3 of 498 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts for 498 points
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 234 additional inputs, on iter 5 have 7766 / 8000
* * * * [misc]points:  Computing exacts on every 14 of 234 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 7 of 234 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 3 of 234 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts for 234 points
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 122 additional inputs, on iter 6 have 7878 / 8000
* * * * [misc]points:  Computing exacts on every 7 of 122 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts on every 3 of 122 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts for 122 points
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 63 additional inputs, on iter 7 have 7937 / 8000
* * * * [misc]points:  Computing exacts on every 3 of 63 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts for 63 points
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 33 additional inputs, on iter 8 have 7967 / 8000
* * * * [misc]points:  Computing exacts on every 2 of 33 points to ramp up precision
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Computing exacts for 33 points
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 16 additional inputs, on iter 9 have 7984 / 8000
* * * * [misc]points:  Computing exacts for 16 points
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 7 additional inputs, on iter 10 have 7993 / 8000
* * * * [misc]points:  Computing exacts for 7 points
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [misc]points:  Sampling 4 additional inputs, on iter 11 have 7997 / 8000
* * * * [misc]points:  Computing exacts for 4 points
* * * * [misc]points:  Setting MPFR precision to 320
* * * * [misc]points:  Setting MPFR precision to 576
* * * * [misc]points:  Filtering points with unrepresentable outputs
* * * * [exit]points:  Sampled 8000 points with exact outputs