1.116 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.016 * * * [progress]: [2/2] Setting up program.
0.018 * [progress]: [Phase 2 of 3] Improving.
0.018 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- 1.0 (/ x (* (- y z) (- y t))))
0.019 * * [simplify]: iteration  0 :  10  enodes  (cost  11 )
0.020 * * [simplify]: iteration  1 :  19  enodes  (cost  11 )
0.027 * * [simplify]: iteration  2 :  40  enodes  (cost  11 )
0.033 * * [simplify]: iteration  3 :  84  enodes  (cost  11 )
0.044 * * [simplify]: iteration  4 :  168  enodes  (cost  11 )
0.074 * * [simplify]: iteration  5 :  327  enodes  (cost  11 )
0.150 * * [simplify]: iteration  6 :  545  enodes  (cost  11 )
0.271 * * [simplify]: iteration  7 :  807  enodes  (cost  11 )
0.441 * * [simplify]: iteration  8 :  1141  enodes  (cost  11 )
0.821 * * [simplify]: iteration  9 :  1674  enodes  (cost  11 )
1.469 * * [simplify]: iteration  10 :  1939  enodes  (cost  11 )
2.240 * * [simplify]: iteration  11 :  1943  enodes  (cost  11 )
3.015 * * [simplify]: iteration  done :  1943  enodes  (cost  11 )
3.015 * [simplify]: Simplified to:
   (- 1.0 (/ x (* (- y z) (- y t))))
3.015 * * [progress]: iteration 1 / 4
3.015 * * * [progress]: picking best candidate
3.017 * * * * [pick]: Picked  #<alt (λ (x y z t) (- 1.0 (/ x (* (- y z) (- y t)))))>
3.017 * * * [progress]: localizing error
3.024 * * * [progress]: generating rewritten candidates
3.024 * * * * [progress]: [ 1 / 2 ] rewriting at (2 2)
3.032 * * * * [progress]: [ 2 / 2 ] rewriting at (2 2 2)
3.056 * * * [progress]: generating series expansions
3.057 * * * * [progress]: [ 1 / 2 ] generating series at (2 2)
3.057 * [approximate]: Taking taylor expansion of (/ x (* (- y z) (- y t))) in (x y z t) around 0
3.057 * [taylor]: Taking taylor expansion of (/ x (* (- y z) (- y t))) in t
3.057 * [taylor]: Taking taylor expansion of x in t
3.057 * [taylor]: Taking taylor expansion of (* (- y z) (- y t)) in t
3.057 * [taylor]: Taking taylor expansion of (- y z) in t
3.057 * [taylor]: Taking taylor expansion of y in t
3.057 * [taylor]: Taking taylor expansion of z in t
3.057 * [taylor]: Taking taylor expansion of (- y t) in t
3.057 * [taylor]: Taking taylor expansion of y in t
3.057 * [taylor]: Taking taylor expansion of t in t
3.058 * [taylor]: Taking taylor expansion of (/ x (* (- y z) (- y t))) in z
3.058 * [taylor]: Taking taylor expansion of x in z
3.058 * [taylor]: Taking taylor expansion of (* (- y z) (- y t)) in z
3.058 * [taylor]: Taking taylor expansion of (- y z) in z
3.058 * [taylor]: Taking taylor expansion of y in z
3.058 * [taylor]: Taking taylor expansion of z in z
3.058 * [taylor]: Taking taylor expansion of (- y t) in z
3.058 * [taylor]: Taking taylor expansion of y in z
3.058 * [taylor]: Taking taylor expansion of t in z
3.058 * [taylor]: Taking taylor expansion of (/ x (* (- y z) (- y t))) in y
3.058 * [taylor]: Taking taylor expansion of x in y
3.058 * [taylor]: Taking taylor expansion of (* (- y z) (- y t)) in y
3.058 * [taylor]: Taking taylor expansion of (- y z) in y
3.058 * [taylor]: Taking taylor expansion of y in y
3.058 * [taylor]: Taking taylor expansion of z in y
3.058 * [taylor]: Taking taylor expansion of (- y t) in y
3.058 * [taylor]: Taking taylor expansion of y in y
3.058 * [taylor]: Taking taylor expansion of t in y
3.058 * [taylor]: Taking taylor expansion of (/ x (* (- y z) (- y t))) in x
3.058 * [taylor]: Taking taylor expansion of x in x
3.058 * [taylor]: Taking taylor expansion of (* (- y z) (- y t)) in x
3.058 * [taylor]: Taking taylor expansion of (- y z) in x
3.059 * [taylor]: Taking taylor expansion of y in x
3.059 * [taylor]: Taking taylor expansion of z in x
3.059 * [taylor]: Taking taylor expansion of (- y t) in x
3.059 * [taylor]: Taking taylor expansion of y in x
3.059 * [taylor]: Taking taylor expansion of t in x
3.059 * [taylor]: Taking taylor expansion of (/ x (* (- y z) (- y t))) in x
3.059 * [taylor]: Taking taylor expansion of x in x
3.059 * [taylor]: Taking taylor expansion of (* (- y z) (- y t)) in x
3.059 * [taylor]: Taking taylor expansion of (- y z) in x
3.059 * [taylor]: Taking taylor expansion of y in x
3.059 * [taylor]: Taking taylor expansion of z in x
3.059 * [taylor]: Taking taylor expansion of (- y t) in x
3.059 * [taylor]: Taking taylor expansion of y in x
3.059 * [taylor]: Taking taylor expansion of t in x
3.059 * [taylor]: Taking taylor expansion of (/ 1 (* (- y z) (- y t))) in y
3.059 * [taylor]: Taking taylor expansion of (* (- y z) (- y t)) in y
3.059 * [taylor]: Taking taylor expansion of (- y z) in y
3.059 * [taylor]: Taking taylor expansion of y in y
3.059 * [taylor]: Taking taylor expansion of z in y
3.059 * [taylor]: Taking taylor expansion of (- y t) in y
3.059 * [taylor]: Taking taylor expansion of y in y
3.059 * [taylor]: Taking taylor expansion of t in y
3.059 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in z
3.059 * [taylor]: Taking taylor expansion of (* t z) in z
3.059 * [taylor]: Taking taylor expansion of t in z
3.060 * [taylor]: Taking taylor expansion of z in z
3.060 * [taylor]: Taking taylor expansion of 0 in t
3.062 * [taylor]: Taking taylor expansion of 0 in y
3.062 * [taylor]: Taking taylor expansion of 0 in z
3.062 * [taylor]: Taking taylor expansion of 0 in t
3.063 * [taylor]: Taking taylor expansion of (+ (/ 1 (* t (pow z 2))) (/ 1 (* (pow t 2) z))) in z
3.063 * [taylor]: Taking taylor expansion of (/ 1 (* t (pow z 2))) in z
3.063 * [taylor]: Taking taylor expansion of (* t (pow z 2)) in z
3.063 * [taylor]: Taking taylor expansion of t in z
3.063 * [taylor]: Taking taylor expansion of (pow z 2) in z
3.063 * [taylor]: Taking taylor expansion of z in z
3.063 * [taylor]: Taking taylor expansion of (/ 1 (* (pow t 2) z)) in z
3.063 * [taylor]: Taking taylor expansion of (* (pow t 2) z) in z
3.063 * [taylor]: Taking taylor expansion of (pow t 2) in z
3.063 * [taylor]: Taking taylor expansion of t in z
3.063 * [taylor]: Taking taylor expansion of z in z
3.067 * [taylor]: Taking taylor expansion of 0 in t
3.067 * [taylor]: Taking taylor expansion of 0 in t
3.069 * [taylor]: Taking taylor expansion of 0 in y
3.069 * [taylor]: Taking taylor expansion of 0 in z
3.069 * [taylor]: Taking taylor expansion of 0 in t
3.069 * [approximate]: Taking taylor expansion of (/ 1 (* (- (/ 1 y) (/ 1 z)) (* x (- (/ 1 y) (/ 1 t))))) in (x y z t) around 0
3.069 * [taylor]: Taking taylor expansion of (/ 1 (* (- (/ 1 y) (/ 1 z)) (* x (- (/ 1 y) (/ 1 t))))) in t
3.069 * [taylor]: Taking taylor expansion of (* (- (/ 1 y) (/ 1 z)) (* x (- (/ 1 y) (/ 1 t)))) in t
3.069 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 z)) in t
3.069 * [taylor]: Taking taylor expansion of (/ 1 y) in t
3.069 * [taylor]: Taking taylor expansion of y in t
3.069 * [taylor]: Taking taylor expansion of (/ 1 z) in t
3.070 * [taylor]: Taking taylor expansion of z in t
3.070 * [taylor]: Taking taylor expansion of (* x (- (/ 1 y) (/ 1 t))) in t
3.070 * [taylor]: Taking taylor expansion of x in t
3.070 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 t)) in t
3.070 * [taylor]: Taking taylor expansion of (/ 1 y) in t
3.070 * [taylor]: Taking taylor expansion of y in t
3.070 * [taylor]: Taking taylor expansion of (/ 1 t) in t
3.070 * [taylor]: Taking taylor expansion of t in t
3.071 * [taylor]: Taking taylor expansion of (/ 1 (* (- (/ 1 y) (/ 1 z)) (* x (- (/ 1 y) (/ 1 t))))) in z
3.071 * [taylor]: Taking taylor expansion of (* (- (/ 1 y) (/ 1 z)) (* x (- (/ 1 y) (/ 1 t)))) in z
3.071 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 z)) in z
3.071 * [taylor]: Taking taylor expansion of (/ 1 y) in z
3.071 * [taylor]: Taking taylor expansion of y in z
3.071 * [taylor]: Taking taylor expansion of (/ 1 z) in z
3.071 * [taylor]: Taking taylor expansion of z in z
3.071 * [taylor]: Taking taylor expansion of (* x (- (/ 1 y) (/ 1 t))) in z
3.071 * [taylor]: Taking taylor expansion of x in z
3.071 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 t)) in z
3.071 * [taylor]: Taking taylor expansion of (/ 1 y) in z
3.071 * [taylor]: Taking taylor expansion of y in z
3.071 * [taylor]: Taking taylor expansion of (/ 1 t) in z
3.071 * [taylor]: Taking taylor expansion of t in z
3.072 * [taylor]: Taking taylor expansion of (/ 1 (* (- (/ 1 y) (/ 1 z)) (* x (- (/ 1 y) (/ 1 t))))) in y
3.072 * [taylor]: Taking taylor expansion of (* (- (/ 1 y) (/ 1 z)) (* x (- (/ 1 y) (/ 1 t)))) in y
3.072 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 z)) in y
3.072 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.072 * [taylor]: Taking taylor expansion of y in y
3.072 * [taylor]: Taking taylor expansion of (/ 1 z) in y
3.072 * [taylor]: Taking taylor expansion of z in y
3.073 * [taylor]: Taking taylor expansion of (* x (- (/ 1 y) (/ 1 t))) in y
3.073 * [taylor]: Taking taylor expansion of x in y
3.073 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 t)) in y
3.073 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.073 * [taylor]: Taking taylor expansion of y in y
3.073 * [taylor]: Taking taylor expansion of (/ 1 t) in y
3.073 * [taylor]: Taking taylor expansion of t in y
3.074 * [taylor]: Taking taylor expansion of (/ 1 (* (- (/ 1 y) (/ 1 z)) (* x (- (/ 1 y) (/ 1 t))))) in x
3.074 * [taylor]: Taking taylor expansion of (* (- (/ 1 y) (/ 1 z)) (* x (- (/ 1 y) (/ 1 t)))) in x
3.074 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 z)) in x
3.074 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.074 * [taylor]: Taking taylor expansion of y in x
3.074 * [taylor]: Taking taylor expansion of (/ 1 z) in x
3.074 * [taylor]: Taking taylor expansion of z in x
3.074 * [taylor]: Taking taylor expansion of (* x (- (/ 1 y) (/ 1 t))) in x
3.074 * [taylor]: Taking taylor expansion of x in x
3.074 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 t)) in x
3.074 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.074 * [taylor]: Taking taylor expansion of y in x
3.074 * [taylor]: Taking taylor expansion of (/ 1 t) in x
3.074 * [taylor]: Taking taylor expansion of t in x
3.076 * [taylor]: Taking taylor expansion of (/ 1 (* (- (/ 1 y) (/ 1 z)) (* x (- (/ 1 y) (/ 1 t))))) in x
3.076 * [taylor]: Taking taylor expansion of (* (- (/ 1 y) (/ 1 z)) (* x (- (/ 1 y) (/ 1 t)))) in x
3.076 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 z)) in x
3.076 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.076 * [taylor]: Taking taylor expansion of y in x
3.076 * [taylor]: Taking taylor expansion of (/ 1 z) in x
3.076 * [taylor]: Taking taylor expansion of z in x
3.076 * [taylor]: Taking taylor expansion of (* x (- (/ 1 y) (/ 1 t))) in x
3.076 * [taylor]: Taking taylor expansion of x in x
3.077 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 t)) in x
3.077 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.077 * [taylor]: Taking taylor expansion of y in x
3.077 * [taylor]: Taking taylor expansion of (/ 1 t) in x
3.077 * [taylor]: Taking taylor expansion of t in x
3.079 * [taylor]: Taking taylor expansion of (/ 1 (- (+ (/ 1 (* t z)) (/ 1 (pow y 2))) (+ (/ 1 (* z y)) (/ 1 (* t y))))) in y
3.079 * [taylor]: Taking taylor expansion of (- (+ (/ 1 (* t z)) (/ 1 (pow y 2))) (+ (/ 1 (* z y)) (/ 1 (* t y)))) in y
3.079 * [taylor]: Taking taylor expansion of (+ (/ 1 (* t z)) (/ 1 (pow y 2))) in y
3.079 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in y
3.079 * [taylor]: Taking taylor expansion of (* t z) in y
3.079 * [taylor]: Taking taylor expansion of t in y
3.079 * [taylor]: Taking taylor expansion of z in y
3.079 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
3.079 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.079 * [taylor]: Taking taylor expansion of y in y
3.080 * [taylor]: Taking taylor expansion of (+ (/ 1 (* z y)) (/ 1 (* t y))) in y
3.080 * [taylor]: Taking taylor expansion of (/ 1 (* z y)) in y
3.080 * [taylor]: Taking taylor expansion of (* z y) in y
3.080 * [taylor]: Taking taylor expansion of z in y
3.080 * [taylor]: Taking taylor expansion of y in y
3.080 * [taylor]: Taking taylor expansion of (/ 1 (* t y)) in y
3.080 * [taylor]: Taking taylor expansion of (* t y) in y
3.080 * [taylor]: Taking taylor expansion of t in y
3.080 * [taylor]: Taking taylor expansion of y in y
3.081 * [taylor]: Taking taylor expansion of 1 in z
3.081 * [taylor]: Taking taylor expansion of 0 in t
3.084 * [taylor]: Taking taylor expansion of 0 in y
3.084 * [taylor]: Taking taylor expansion of 0 in z
3.084 * [taylor]: Taking taylor expansion of 0 in t
3.086 * [taylor]: Taking taylor expansion of (+ (/ 1 z) (/ 1 t)) in z
3.086 * [taylor]: Taking taylor expansion of (/ 1 z) in z
3.086 * [taylor]: Taking taylor expansion of z in z
3.086 * [taylor]: Taking taylor expansion of (/ 1 t) in z
3.086 * [taylor]: Taking taylor expansion of t in z
3.087 * [taylor]: Taking taylor expansion of 0 in t
3.087 * [taylor]: Taking taylor expansion of 0 in t
3.091 * [taylor]: Taking taylor expansion of 0 in y
3.091 * [taylor]: Taking taylor expansion of 0 in z
3.091 * [taylor]: Taking taylor expansion of 0 in t
3.092 * [approximate]: Taking taylor expansion of (/ -1 (* x (* (- (/ 1 z) (/ 1 y)) (- (/ 1 t) (/ 1 y))))) in (x y z t) around 0
3.092 * [taylor]: Taking taylor expansion of (/ -1 (* x (* (- (/ 1 z) (/ 1 y)) (- (/ 1 t) (/ 1 y))))) in t
3.092 * [taylor]: Taking taylor expansion of -1 in t
3.092 * [taylor]: Taking taylor expansion of (* x (* (- (/ 1 z) (/ 1 y)) (- (/ 1 t) (/ 1 y)))) in t
3.092 * [taylor]: Taking taylor expansion of x in t
3.092 * [taylor]: Taking taylor expansion of (* (- (/ 1 z) (/ 1 y)) (- (/ 1 t) (/ 1 y))) in t
3.092 * [taylor]: Taking taylor expansion of (- (/ 1 z) (/ 1 y)) in t
3.092 * [taylor]: Taking taylor expansion of (/ 1 z) in t
3.092 * [taylor]: Taking taylor expansion of z in t
3.092 * [taylor]: Taking taylor expansion of (/ 1 y) in t
3.092 * [taylor]: Taking taylor expansion of y in t
3.092 * [taylor]: Taking taylor expansion of (- (/ 1 t) (/ 1 y)) in t
3.092 * [taylor]: Taking taylor expansion of (/ 1 t) in t
3.092 * [taylor]: Taking taylor expansion of t in t
3.092 * [taylor]: Taking taylor expansion of (/ 1 y) in t
3.092 * [taylor]: Taking taylor expansion of y in t
3.093 * [taylor]: Taking taylor expansion of (/ -1 (* x (* (- (/ 1 z) (/ 1 y)) (- (/ 1 t) (/ 1 y))))) in z
3.093 * [taylor]: Taking taylor expansion of -1 in z
3.093 * [taylor]: Taking taylor expansion of (* x (* (- (/ 1 z) (/ 1 y)) (- (/ 1 t) (/ 1 y)))) in z
3.093 * [taylor]: Taking taylor expansion of x in z
3.093 * [taylor]: Taking taylor expansion of (* (- (/ 1 z) (/ 1 y)) (- (/ 1 t) (/ 1 y))) in z
3.093 * [taylor]: Taking taylor expansion of (- (/ 1 z) (/ 1 y)) in z
3.093 * [taylor]: Taking taylor expansion of (/ 1 z) in z
3.093 * [taylor]: Taking taylor expansion of z in z
3.093 * [taylor]: Taking taylor expansion of (/ 1 y) in z
3.093 * [taylor]: Taking taylor expansion of y in z
3.093 * [taylor]: Taking taylor expansion of (- (/ 1 t) (/ 1 y)) in z
3.093 * [taylor]: Taking taylor expansion of (/ 1 t) in z
3.093 * [taylor]: Taking taylor expansion of t in z
3.093 * [taylor]: Taking taylor expansion of (/ 1 y) in z
3.093 * [taylor]: Taking taylor expansion of y in z
3.094 * [taylor]: Taking taylor expansion of (/ -1 (* x (* (- (/ 1 z) (/ 1 y)) (- (/ 1 t) (/ 1 y))))) in y
3.094 * [taylor]: Taking taylor expansion of -1 in y
3.094 * [taylor]: Taking taylor expansion of (* x (* (- (/ 1 z) (/ 1 y)) (- (/ 1 t) (/ 1 y)))) in y
3.094 * [taylor]: Taking taylor expansion of x in y
3.094 * [taylor]: Taking taylor expansion of (* (- (/ 1 z) (/ 1 y)) (- (/ 1 t) (/ 1 y))) in y
3.094 * [taylor]: Taking taylor expansion of (- (/ 1 z) (/ 1 y)) in y
3.094 * [taylor]: Taking taylor expansion of (/ 1 z) in y
3.094 * [taylor]: Taking taylor expansion of z in y
3.094 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.094 * [taylor]: Taking taylor expansion of y in y
3.098 * [taylor]: Taking taylor expansion of (- (/ 1 t) (/ 1 y)) in y
3.098 * [taylor]: Taking taylor expansion of (/ 1 t) in y
3.098 * [taylor]: Taking taylor expansion of t in y
3.098 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.098 * [taylor]: Taking taylor expansion of y in y
3.100 * [taylor]: Taking taylor expansion of (/ -1 (* x (* (- (/ 1 z) (/ 1 y)) (- (/ 1 t) (/ 1 y))))) in x
3.100 * [taylor]: Taking taylor expansion of -1 in x
3.100 * [taylor]: Taking taylor expansion of (* x (* (- (/ 1 z) (/ 1 y)) (- (/ 1 t) (/ 1 y)))) in x
3.100 * [taylor]: Taking taylor expansion of x in x
3.100 * [taylor]: Taking taylor expansion of (* (- (/ 1 z) (/ 1 y)) (- (/ 1 t) (/ 1 y))) in x
3.100 * [taylor]: Taking taylor expansion of (- (/ 1 z) (/ 1 y)) in x
3.100 * [taylor]: Taking taylor expansion of (/ 1 z) in x
3.100 * [taylor]: Taking taylor expansion of z in x
3.100 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.100 * [taylor]: Taking taylor expansion of y in x
3.100 * [taylor]: Taking taylor expansion of (- (/ 1 t) (/ 1 y)) in x
3.100 * [taylor]: Taking taylor expansion of (/ 1 t) in x
3.100 * [taylor]: Taking taylor expansion of t in x
3.100 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.100 * [taylor]: Taking taylor expansion of y in x
3.102 * [taylor]: Taking taylor expansion of (/ -1 (* x (* (- (/ 1 z) (/ 1 y)) (- (/ 1 t) (/ 1 y))))) in x
3.102 * [taylor]: Taking taylor expansion of -1 in x
3.102 * [taylor]: Taking taylor expansion of (* x (* (- (/ 1 z) (/ 1 y)) (- (/ 1 t) (/ 1 y)))) in x
3.102 * [taylor]: Taking taylor expansion of x in x
3.102 * [taylor]: Taking taylor expansion of (* (- (/ 1 z) (/ 1 y)) (- (/ 1 t) (/ 1 y))) in x
3.102 * [taylor]: Taking taylor expansion of (- (/ 1 z) (/ 1 y)) in x
3.102 * [taylor]: Taking taylor expansion of (/ 1 z) in x
3.102 * [taylor]: Taking taylor expansion of z in x
3.102 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.102 * [taylor]: Taking taylor expansion of y in x
3.103 * [taylor]: Taking taylor expansion of (- (/ 1 t) (/ 1 y)) in x
3.103 * [taylor]: Taking taylor expansion of (/ 1 t) in x
3.103 * [taylor]: Taking taylor expansion of t in x
3.103 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.103 * [taylor]: Taking taylor expansion of y in x
3.105 * [taylor]: Taking taylor expansion of (/ -1 (- (+ (/ 1 (* t z)) (/ 1 (pow y 2))) (+ (/ 1 (* z y)) (/ 1 (* t y))))) in y
3.105 * [taylor]: Taking taylor expansion of -1 in y
3.105 * [taylor]: Taking taylor expansion of (- (+ (/ 1 (* t z)) (/ 1 (pow y 2))) (+ (/ 1 (* z y)) (/ 1 (* t y)))) in y
3.105 * [taylor]: Taking taylor expansion of (+ (/ 1 (* t z)) (/ 1 (pow y 2))) in y
3.105 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in y
3.105 * [taylor]: Taking taylor expansion of (* t z) in y
3.105 * [taylor]: Taking taylor expansion of t in y
3.105 * [taylor]: Taking taylor expansion of z in y
3.105 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
3.105 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.105 * [taylor]: Taking taylor expansion of y in y
3.106 * [taylor]: Taking taylor expansion of (+ (/ 1 (* z y)) (/ 1 (* t y))) in y
3.106 * [taylor]: Taking taylor expansion of (/ 1 (* z y)) in y
3.106 * [taylor]: Taking taylor expansion of (* z y) in y
3.106 * [taylor]: Taking taylor expansion of z in y
3.106 * [taylor]: Taking taylor expansion of y in y
3.106 * [taylor]: Taking taylor expansion of (/ 1 (* t y)) in y
3.106 * [taylor]: Taking taylor expansion of (* t y) in y
3.106 * [taylor]: Taking taylor expansion of t in y
3.106 * [taylor]: Taking taylor expansion of y in y
3.107 * [taylor]: Taking taylor expansion of -1 in z
3.107 * [taylor]: Taking taylor expansion of 0 in t
3.111 * [taylor]: Taking taylor expansion of 0 in y
3.111 * [taylor]: Taking taylor expansion of 0 in z
3.111 * [taylor]: Taking taylor expansion of 0 in t
3.112 * [taylor]: Taking taylor expansion of (- (+ (/ 1 z) (/ 1 t))) in z
3.112 * [taylor]: Taking taylor expansion of (+ (/ 1 z) (/ 1 t)) in z
3.112 * [taylor]: Taking taylor expansion of (/ 1 z) in z
3.112 * [taylor]: Taking taylor expansion of z in z
3.113 * [taylor]: Taking taylor expansion of (/ 1 t) in z
3.113 * [taylor]: Taking taylor expansion of t in z
3.114 * [taylor]: Taking taylor expansion of 0 in t
3.114 * [taylor]: Taking taylor expansion of 0 in t
3.118 * [taylor]: Taking taylor expansion of 0 in y
3.118 * [taylor]: Taking taylor expansion of 0 in z
3.118 * [taylor]: Taking taylor expansion of 0 in t
3.118 * * * * [progress]: [ 2 / 2 ] generating series at (2 2 2)
3.118 * [approximate]: Taking taylor expansion of (* (- y z) (- y t)) in (y z t) around 0
3.118 * [taylor]: Taking taylor expansion of (* (- y z) (- y t)) in t
3.119 * [taylor]: Taking taylor expansion of (- y z) in t
3.119 * [taylor]: Taking taylor expansion of y in t
3.119 * [taylor]: Taking taylor expansion of z in t
3.119 * [taylor]: Taking taylor expansion of (- y t) in t
3.119 * [taylor]: Taking taylor expansion of y in t
3.119 * [taylor]: Taking taylor expansion of t in t
3.119 * [taylor]: Taking taylor expansion of (* (- y z) (- y t)) in z
3.119 * [taylor]: Taking taylor expansion of (- y z) in z
3.119 * [taylor]: Taking taylor expansion of y in z
3.119 * [taylor]: Taking taylor expansion of z in z
3.119 * [taylor]: Taking taylor expansion of (- y t) in z
3.119 * [taylor]: Taking taylor expansion of y in z
3.119 * [taylor]: Taking taylor expansion of t in z
3.119 * [taylor]: Taking taylor expansion of (* (- y z) (- y t)) in y
3.119 * [taylor]: Taking taylor expansion of (- y z) in y
3.119 * [taylor]: Taking taylor expansion of y in y
3.119 * [taylor]: Taking taylor expansion of z in y
3.119 * [taylor]: Taking taylor expansion of (- y t) in y
3.119 * [taylor]: Taking taylor expansion of y in y
3.119 * [taylor]: Taking taylor expansion of t in y
3.119 * [taylor]: Taking taylor expansion of (* (- y z) (- y t)) in y
3.119 * [taylor]: Taking taylor expansion of (- y z) in y
3.119 * [taylor]: Taking taylor expansion of y in y
3.119 * [taylor]: Taking taylor expansion of z in y
3.119 * [taylor]: Taking taylor expansion of (- y t) in y
3.119 * [taylor]: Taking taylor expansion of y in y
3.119 * [taylor]: Taking taylor expansion of t in y
3.119 * [taylor]: Taking taylor expansion of (* t z) in z
3.119 * [taylor]: Taking taylor expansion of t in z
3.119 * [taylor]: Taking taylor expansion of z in z
3.119 * [taylor]: Taking taylor expansion of 0 in t
3.120 * [taylor]: Taking taylor expansion of (- (+ t z)) in z
3.120 * [taylor]: Taking taylor expansion of (+ t z) in z
3.120 * [taylor]: Taking taylor expansion of t in z
3.120 * [taylor]: Taking taylor expansion of z in z
3.120 * [taylor]: Taking taylor expansion of (- t) in t
3.120 * [taylor]: Taking taylor expansion of t in t
3.121 * [taylor]: Taking taylor expansion of t in t
3.122 * [taylor]: Taking taylor expansion of 1 in z
3.122 * [taylor]: Taking taylor expansion of 1 in t
3.123 * [taylor]: Taking taylor expansion of -1 in t
3.123 * [taylor]: Taking taylor expansion of 0 in t
3.124 * [approximate]: Taking taylor expansion of (* (- (/ 1 y) (/ 1 z)) (- (/ 1 y) (/ 1 t))) in (y z t) around 0
3.124 * [taylor]: Taking taylor expansion of (* (- (/ 1 y) (/ 1 z)) (- (/ 1 y) (/ 1 t))) in t
3.124 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 z)) in t
3.124 * [taylor]: Taking taylor expansion of (/ 1 y) in t
3.124 * [taylor]: Taking taylor expansion of y in t
3.124 * [taylor]: Taking taylor expansion of (/ 1 z) in t
3.124 * [taylor]: Taking taylor expansion of z in t
3.124 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 t)) in t
3.124 * [taylor]: Taking taylor expansion of (/ 1 y) in t
3.124 * [taylor]: Taking taylor expansion of y in t
3.124 * [taylor]: Taking taylor expansion of (/ 1 t) in t
3.124 * [taylor]: Taking taylor expansion of t in t
3.125 * [taylor]: Taking taylor expansion of (* (- (/ 1 y) (/ 1 z)) (- (/ 1 y) (/ 1 t))) in z
3.125 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 z)) in z
3.125 * [taylor]: Taking taylor expansion of (/ 1 y) in z
3.125 * [taylor]: Taking taylor expansion of y in z
3.125 * [taylor]: Taking taylor expansion of (/ 1 z) in z
3.125 * [taylor]: Taking taylor expansion of z in z
3.125 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 t)) in z
3.125 * [taylor]: Taking taylor expansion of (/ 1 y) in z
3.125 * [taylor]: Taking taylor expansion of y in z
3.125 * [taylor]: Taking taylor expansion of (/ 1 t) in z
3.125 * [taylor]: Taking taylor expansion of t in z
3.125 * [taylor]: Taking taylor expansion of (* (- (/ 1 y) (/ 1 z)) (- (/ 1 y) (/ 1 t))) in y
3.125 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 z)) in y
3.125 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.125 * [taylor]: Taking taylor expansion of y in y
3.125 * [taylor]: Taking taylor expansion of (/ 1 z) in y
3.125 * [taylor]: Taking taylor expansion of z in y
3.125 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 t)) in y
3.126 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.126 * [taylor]: Taking taylor expansion of y in y
3.126 * [taylor]: Taking taylor expansion of (/ 1 t) in y
3.126 * [taylor]: Taking taylor expansion of t in y
3.126 * [taylor]: Taking taylor expansion of (* (- (/ 1 y) (/ 1 z)) (- (/ 1 y) (/ 1 t))) in y
3.126 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 z)) in y
3.126 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.126 * [taylor]: Taking taylor expansion of y in y
3.126 * [taylor]: Taking taylor expansion of (/ 1 z) in y
3.126 * [taylor]: Taking taylor expansion of z in y
3.126 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 t)) in y
3.126 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.126 * [taylor]: Taking taylor expansion of y in y
3.127 * [taylor]: Taking taylor expansion of (/ 1 t) in y
3.127 * [taylor]: Taking taylor expansion of t in y
3.127 * [taylor]: Taking taylor expansion of 1 in z
3.129 * [taylor]: Taking taylor expansion of (- (+ (/ 1 z) (/ 1 t))) in z
3.129 * [taylor]: Taking taylor expansion of (+ (/ 1 z) (/ 1 t)) in z
3.129 * [taylor]: Taking taylor expansion of (/ 1 z) in z
3.129 * [taylor]: Taking taylor expansion of z in z
3.129 * [taylor]: Taking taylor expansion of (/ 1 t) in z
3.129 * [taylor]: Taking taylor expansion of t in z
3.129 * [taylor]: Taking taylor expansion of -1 in t
3.130 * [taylor]: Taking taylor expansion of 1 in t
3.132 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in z
3.132 * [taylor]: Taking taylor expansion of (* t z) in z
3.132 * [taylor]: Taking taylor expansion of t in z
3.132 * [taylor]: Taking taylor expansion of z in z
3.133 * [taylor]: Taking taylor expansion of (/ 1 t) in t
3.133 * [taylor]: Taking taylor expansion of t in t
3.133 * [taylor]: Taking taylor expansion of (- (/ 1 t)) in t
3.133 * [taylor]: Taking taylor expansion of (/ 1 t) in t
3.133 * [taylor]: Taking taylor expansion of t in t
3.134 * [taylor]: Taking taylor expansion of 0 in t
3.134 * [approximate]: Taking taylor expansion of (* (- (/ 1 t) (/ 1 y)) (- (/ 1 z) (/ 1 y))) in (y z t) around 0
3.134 * [taylor]: Taking taylor expansion of (* (- (/ 1 t) (/ 1 y)) (- (/ 1 z) (/ 1 y))) in t
3.135 * [taylor]: Taking taylor expansion of (- (/ 1 t) (/ 1 y)) in t
3.135 * [taylor]: Taking taylor expansion of (/ 1 t) in t
3.135 * [taylor]: Taking taylor expansion of t in t
3.135 * [taylor]: Taking taylor expansion of (/ 1 y) in t
3.135 * [taylor]: Taking taylor expansion of y in t
3.135 * [taylor]: Taking taylor expansion of (- (/ 1 z) (/ 1 y)) in t
3.135 * [taylor]: Taking taylor expansion of (/ 1 z) in t
3.135 * [taylor]: Taking taylor expansion of z in t
3.135 * [taylor]: Taking taylor expansion of (/ 1 y) in t
3.135 * [taylor]: Taking taylor expansion of y in t
3.135 * [taylor]: Taking taylor expansion of (* (- (/ 1 t) (/ 1 y)) (- (/ 1 z) (/ 1 y))) in z
3.135 * [taylor]: Taking taylor expansion of (- (/ 1 t) (/ 1 y)) in z
3.135 * [taylor]: Taking taylor expansion of (/ 1 t) in z
3.135 * [taylor]: Taking taylor expansion of t in z
3.135 * [taylor]: Taking taylor expansion of (/ 1 y) in z
3.135 * [taylor]: Taking taylor expansion of y in z
3.135 * [taylor]: Taking taylor expansion of (- (/ 1 z) (/ 1 y)) in z
3.135 * [taylor]: Taking taylor expansion of (/ 1 z) in z
3.135 * [taylor]: Taking taylor expansion of z in z
3.135 * [taylor]: Taking taylor expansion of (/ 1 y) in z
3.135 * [taylor]: Taking taylor expansion of y in z
3.136 * [taylor]: Taking taylor expansion of (* (- (/ 1 t) (/ 1 y)) (- (/ 1 z) (/ 1 y))) in y
3.136 * [taylor]: Taking taylor expansion of (- (/ 1 t) (/ 1 y)) in y
3.136 * [taylor]: Taking taylor expansion of (/ 1 t) in y
3.136 * [taylor]: Taking taylor expansion of t in y
3.136 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.136 * [taylor]: Taking taylor expansion of y in y
3.136 * [taylor]: Taking taylor expansion of (- (/ 1 z) (/ 1 y)) in y
3.136 * [taylor]: Taking taylor expansion of (/ 1 z) in y
3.136 * [taylor]: Taking taylor expansion of z in y
3.136 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.136 * [taylor]: Taking taylor expansion of y in y
3.136 * [taylor]: Taking taylor expansion of (* (- (/ 1 t) (/ 1 y)) (- (/ 1 z) (/ 1 y))) in y
3.136 * [taylor]: Taking taylor expansion of (- (/ 1 t) (/ 1 y)) in y
3.136 * [taylor]: Taking taylor expansion of (/ 1 t) in y
3.136 * [taylor]: Taking taylor expansion of t in y
3.136 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.136 * [taylor]: Taking taylor expansion of y in y
3.137 * [taylor]: Taking taylor expansion of (- (/ 1 z) (/ 1 y)) in y
3.137 * [taylor]: Taking taylor expansion of (/ 1 z) in y
3.137 * [taylor]: Taking taylor expansion of z in y
3.137 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.137 * [taylor]: Taking taylor expansion of y in y
3.138 * [taylor]: Taking taylor expansion of 1 in z
3.140 * [taylor]: Taking taylor expansion of (- (+ (/ 1 z) (/ 1 t))) in z
3.140 * [taylor]: Taking taylor expansion of (+ (/ 1 z) (/ 1 t)) in z
3.140 * [taylor]: Taking taylor expansion of (/ 1 z) in z
3.140 * [taylor]: Taking taylor expansion of z in z
3.140 * [taylor]: Taking taylor expansion of (/ 1 t) in z
3.140 * [taylor]: Taking taylor expansion of t in z
3.141 * [taylor]: Taking taylor expansion of -1 in t
3.141 * [taylor]: Taking taylor expansion of 1 in t
3.143 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in z
3.143 * [taylor]: Taking taylor expansion of (* t z) in z
3.144 * [taylor]: Taking taylor expansion of t in z
3.144 * [taylor]: Taking taylor expansion of z in z
3.144 * [taylor]: Taking taylor expansion of (/ 1 t) in t
3.144 * [taylor]: Taking taylor expansion of t in t
3.145 * [taylor]: Taking taylor expansion of (- (/ 1 t)) in t
3.145 * [taylor]: Taking taylor expansion of (/ 1 t) in t
3.145 * [taylor]: Taking taylor expansion of t in t
3.145 * [taylor]: Taking taylor expansion of 0 in t
3.146 * * * [progress]: simplifying candidates
3.147 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (expm1 (/ x (* (- y z) (- y t))))
  (log1p (/ x (* (- y z) (- y t))))
  (- (log x) (+ (log (- y z)) (log (- y t))))
  (- (log x) (log (* (- y z) (- y t))))
  (log (/ x (* (- y z) (- y t))))
  (exp (/ x (* (- y z) (- y t))))
  (/ (* (* x x) x) (* (* (* (- y z) (- y z)) (- y z)) (* (* (- y t) (- y t)) (- y t))))
  (/ (* (* x x) x) (* (* (* (- y z) (- y t)) (* (- y z) (- y t))) (* (- y z) (- y t))))
  (* (cbrt (/ x (* (- y z) (- y t)))) (cbrt (/ x (* (- y z) (- y t)))))
  (cbrt (/ x (* (- y z) (- y t))))
  (* (* (/ x (* (- y z) (- y t))) (/ x (* (- y z) (- y t)))) (/ x (* (- y z) (- y t))))
  (sqrt (/ x (* (- y z) (- y t))))
  (sqrt (/ x (* (- y z) (- y t))))
  (- x)
  (- (* (- y z) (- y t)))
  (/ (* (cbrt x) (cbrt x)) (- y z))
  (/ (cbrt x) (- y t))
  (/ (sqrt x) (- y z))
  (/ (sqrt x) (- y t))
  (/ 1 (- y z))
  (/ x (- y t))
  (/ 1 (* (- y z) (- y t)))
  (/ (* (- y z) (- y t)) x)
  (/ x (- y z))
  (/ (* (- y z) (- y t)) (cbrt x))
  (/ (* (- y z) (- y t)) (sqrt x))
  (/ (* (- y z) (- y t)) x)
  (/ x (* (- (pow y 3) (pow z 3)) (- (pow y 3) (pow t 3))))
  (/ x (* (- (pow y 3) (pow z 3)) (- (* y y) (* t t))))
  (/ x (* (- (* y y) (* z z)) (- (pow y 3) (pow t 3))))
  (/ x (* (- (* y y) (* z z)) (- (* y y) (* t t))))
  (/ x (* (- y z) (- (pow y 3) (pow t 3))))
  (/ x (* (- y z) (- (* y y) (* t t))))
  (/ x (* (- (pow y 3) (pow z 3)) (- y t)))
  (/ x (* (- (* y y) (* z z)) (- y t)))
  (expm1 (* (- y z) (- y t)))
  (log1p (* (- y z) (- y t)))
  (* (- y z) (- y t))
  (+ (log (- y z)) (log (- y t)))
  (log (* (- y z) (- y t)))
  (exp (* (- y z) (- y t)))
  (* (* (* (- y z) (- y z)) (- y z)) (* (* (- y t) (- y t)) (- y t)))
  (* (cbrt (* (- y z) (- y t))) (cbrt (* (- y z) (- y t))))
  (cbrt (* (- y z) (- y t)))
  (* (* (* (- y z) (- y t)) (* (- y z) (- y t))) (* (- y z) (- y t)))
  (sqrt (* (- y z) (- y t)))
  (sqrt (* (- y z) (- y t)))
  (* (- (pow y 3) (pow z 3)) (- (pow y 3) (pow t 3)))
  (* (+ (* y y) (+ (* z z) (* y z))) (+ (* y y) (+ (* t t) (* y t))))
  (* (- (pow y 3) (pow z 3)) (- (* y y) (* t t)))
  (* (+ (* y y) (+ (* z z) (* y z))) (+ y t))
  (* (- (* y y) (* z z)) (- (pow y 3) (pow t 3)))
  (* (+ y z) (+ (* y y) (+ (* t t) (* y t))))
  (* (- (* y y) (* z z)) (- (* y y) (* t t)))
  (* (+ y z) (+ y t))
  (* (sqrt (- y z)) (sqrt (- y t)))
  (* (sqrt (- y z)) (sqrt (- y t)))
  (* (- y z) (fma (* (cbrt y) (cbrt y)) (cbrt y) (- (* (cbrt t) (* (cbrt t) (cbrt t))))))
  (* (- y z) (fma (- (cbrt t)) (* (cbrt t) (cbrt t)) (* (cbrt t) (* (cbrt t) (cbrt t)))))
  (* (- y z) (fma (* (cbrt y) (cbrt y)) (cbrt y) (- (* (sqrt t) (sqrt t)))))
  (* (- y z) (fma (- (sqrt t)) (sqrt t) (* (sqrt t) (sqrt t))))
  (* (- y z) (fma (* (cbrt y) (cbrt y)) (cbrt y) (- (* t 1))))
  (* (- y z) (fma (- t) 1 (* t 1)))
  (* (- y z) (fma (sqrt y) (sqrt y) (- (* (cbrt t) (* (cbrt t) (cbrt t))))))
  (* (- y z) (fma (- (cbrt t)) (* (cbrt t) (cbrt t)) (* (cbrt t) (* (cbrt t) (cbrt t)))))
  (* (- y z) (fma (sqrt y) (sqrt y) (- (* (sqrt t) (sqrt t)))))
  (* (- y z) (fma (- (sqrt t)) (sqrt t) (* (sqrt t) (sqrt t))))
  (* (- y z) (fma (sqrt y) (sqrt y) (- (* t 1))))
  (* (- y z) (fma (- t) 1 (* t 1)))
  (* (- y z) (fma 1 y (- (* (cbrt t) (* (cbrt t) (cbrt t))))))
  (* (- y z) (fma (- (cbrt t)) (* (cbrt t) (cbrt t)) (* (cbrt t) (* (cbrt t) (cbrt t)))))
  (* (- y z) (fma 1 y (- (* (sqrt t) (sqrt t)))))
  (* (- y z) (fma (- (sqrt t)) (sqrt t) (* (sqrt t) (sqrt t))))
  (* (- y z) (fma 1 y (- (* t 1))))
  (* (- y z) (fma (- t) 1 (* t 1)))
  (* (- y z) y)
  (* (- y z) (- t))
  (* (- y z) y)
  (* (- y z) (- t))
  (* (fma (* (cbrt y) (cbrt y)) (cbrt y) (- (* (cbrt t) (* (cbrt t) (cbrt t))))) (- y z))
  (* (fma (- (cbrt t)) (* (cbrt t) (cbrt t)) (* (cbrt t) (* (cbrt t) (cbrt t)))) (- y z))
  (* (fma (* (cbrt y) (cbrt y)) (cbrt y) (- (* (sqrt t) (sqrt t)))) (- y z))
  (* (fma (- (sqrt t)) (sqrt t) (* (sqrt t) (sqrt t))) (- y z))
  (* (fma (* (cbrt y) (cbrt y)) (cbrt y) (- (* t 1))) (- y z))
  (* (fma (- t) 1 (* t 1)) (- y z))
  (* (fma (sqrt y) (sqrt y) (- (* (cbrt t) (* (cbrt t) (cbrt t))))) (- y z))
  (* (fma (- (cbrt t)) (* (cbrt t) (cbrt t)) (* (cbrt t) (* (cbrt t) (cbrt t)))) (- y z))
  (* (fma (sqrt y) (sqrt y) (- (* (sqrt t) (sqrt t)))) (- y z))
  (* (fma (- (sqrt t)) (sqrt t) (* (sqrt t) (sqrt t))) (- y z))
  (* (fma (sqrt y) (sqrt y) (- (* t 1))) (- y z))
  (* (fma (- t) 1 (* t 1)) (- y z))
  (* (fma 1 y (- (* (cbrt t) (* (cbrt t) (cbrt t))))) (- y z))
  (* (fma (- (cbrt t)) (* (cbrt t) (cbrt t)) (* (cbrt t) (* (cbrt t) (cbrt t)))) (- y z))
  (* (fma 1 y (- (* (sqrt t) (sqrt t)))) (- y z))
  (* (fma (- (sqrt t)) (sqrt t) (* (sqrt t) (sqrt t))) (- y z))
  (* (fma 1 y (- (* t 1))) (- y z))
  (* (fma (- t) 1 (* t 1)) (- y z))
  (* y (- y z))
  (* (- t) (- y z))
  (* y (- y z))
  (* (- t) (- y z))
  (* (- y z) (* (cbrt (- y t)) (cbrt (- y t))))
  (* (- y z) (sqrt (- y t)))
  (* (- y z) 1)
  (* (- y z) (+ (sqrt y) (sqrt t)))
  (* (- y z) 1)
  (* (cbrt (- y z)) (- y t))
  (* (sqrt (- y z)) (- y t))
  (* (- y z) (- y t))
  (* (- (sqrt y) (sqrt z)) (- y t))
  (* (- y z) (- y t))
  (* (- y z) (- (pow y 3) (pow t 3)))
  (* (- y z) (- (* y y) (* t t)))
  (* (- (pow y 3) (pow z 3)) (- y t))
  (* (- (* y y) (* z z)) (- y t))
  0
  0
  0
  (- (pow y 2) (+ (* z y) (* t y)))
  (- (* t z) (+ (* z y) (* t y)))
  (- (* t z) (+ (* z y) (* t y)))
3.152 * * [simplify]: iteration  0 :  177  enodes  (cost  1460 )