29.805 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.024 * * * [progress]: [2/2] Setting up program.
0.026 * [progress]: [Phase 2 of 3] Improving.
0.027 * [simplify]: Simplifying:
  (/ (+ x y) (- x y))
0.027 * * [simplify]: Extracting # 0 : cost  0
0.027 * * [simplify]: Extracting # 1 : cost  0
0.027 * * [simplify]: Extracting # 2 : cost  0
0.027 * * [simplify]: Extracting # 3 : cost  0
0.027 * * [simplify]: Extracting # 4 : cost  0
0.027 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.029 * * [simplify]: Extracting # 0 : cost  0
0.029 * * [simplify]: Extracting # 1 : cost  0
0.029 * * [simplify]: Extracting # 2 : cost  0
0.029 * * [simplify]: iteration  1 :  8  enodes  (cost  7 )
0.031 * * [simplify]: Extracting # 0 : cost  0
0.031 * * [simplify]: iteration  2 :  9  enodes  (cost  7 )
0.033 * * [simplify]: Extracting # 0 : cost  0
0.034 * * [simplify]: iteration done:  9  enodes  (cost  7 )
0.034 * [simplify]: Simplified to:
  (/ (+ x y) (- x y))
0.034 * * [progress]: iteration 1 / 4
0.034 * * * [progress]: picking best candidate
0.036 * * * * [pick]: Picked  #<alt (λ (x y) (/ (+ x y) (- x y)))>
0.036 * * * [progress]: localizing error
0.046 * * * [progress]: generating rewritten candidates
0.046 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.103 * * * [progress]: generating series expansions
0.103 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.104 * [backup-simplify]: Simplify (/ (+ x y) (- x y)) into (/ (+ x y) (- x y))
0.104 * [approximate]: Taking taylor expansion of (/ (+ x y) (- x y)) in (x y) around 0
0.104 * [taylor]: Taking taylor expansion of (/ (+ x y) (- x y)) in y
0.104 * [taylor]: Taking taylor expansion of (+ x y) in y
0.104 * [taylor]: Taking taylor expansion of x in y
0.104 * [backup-simplify]: Simplify x into x
0.104 * [taylor]: Taking taylor expansion of y in y
0.104 * [backup-simplify]: Simplify 0 into 0
0.104 * [backup-simplify]: Simplify 1 into 1
0.104 * [taylor]: Taking taylor expansion of (- x y) in y
0.104 * [taylor]: Taking taylor expansion of x in y
0.104 * [backup-simplify]: Simplify x into x
0.104 * [taylor]: Taking taylor expansion of y in y
0.104 * [backup-simplify]: Simplify 0 into 0
0.104 * [backup-simplify]: Simplify 1 into 1
0.104 * [backup-simplify]: Simplify (+ x 0) into x
0.105 * [backup-simplify]: Simplify (- 0) into 0
0.106 * [backup-simplify]: Simplify (+ x 0) into x
0.106 * [backup-simplify]: Simplify (/ x x) into 1
0.106 * [taylor]: Taking taylor expansion of (/ (+ x y) (- x y)) in x
0.106 * [taylor]: Taking taylor expansion of (+ x y) in x
0.106 * [taylor]: Taking taylor expansion of x in x
0.106 * [backup-simplify]: Simplify 0 into 0
0.106 * [backup-simplify]: Simplify 1 into 1
0.106 * [taylor]: Taking taylor expansion of y in x
0.106 * [backup-simplify]: Simplify y into y
0.106 * [taylor]: Taking taylor expansion of (- x y) in x
0.106 * [taylor]: Taking taylor expansion of x in x
0.106 * [backup-simplify]: Simplify 0 into 0
0.106 * [backup-simplify]: Simplify 1 into 1
0.106 * [taylor]: Taking taylor expansion of y in x
0.106 * [backup-simplify]: Simplify y into y
0.106 * [backup-simplify]: Simplify (+ 0 y) into y
0.106 * [backup-simplify]: Simplify (- y) into (- y)
0.106 * [backup-simplify]: Simplify (+ 0 (- y)) into (- y)
0.106 * [backup-simplify]: Simplify (/ y (- y)) into -1
0.106 * [taylor]: Taking taylor expansion of (/ (+ x y) (- x y)) in x
0.106 * [taylor]: Taking taylor expansion of (+ x y) in x
0.106 * [taylor]: Taking taylor expansion of x in x
0.106 * [backup-simplify]: Simplify 0 into 0
0.106 * [backup-simplify]: Simplify 1 into 1
0.106 * [taylor]: Taking taylor expansion of y in x
0.106 * [backup-simplify]: Simplify y into y
0.106 * [taylor]: Taking taylor expansion of (- x y) in x
0.106 * [taylor]: Taking taylor expansion of x in x
0.106 * [backup-simplify]: Simplify 0 into 0
0.106 * [backup-simplify]: Simplify 1 into 1
0.106 * [taylor]: Taking taylor expansion of y in x
0.106 * [backup-simplify]: Simplify y into y
0.106 * [backup-simplify]: Simplify (+ 0 y) into y
0.106 * [backup-simplify]: Simplify (- y) into (- y)
0.107 * [backup-simplify]: Simplify (+ 0 (- y)) into (- y)
0.107 * [backup-simplify]: Simplify (/ y (- y)) into -1
0.107 * [taylor]: Taking taylor expansion of -1 in y
0.107 * [backup-simplify]: Simplify -1 into -1
0.107 * [backup-simplify]: Simplify -1 into -1
0.107 * [backup-simplify]: Simplify (+ 1 0) into 1
0.108 * [backup-simplify]: Simplify (- 0) into 0
0.108 * [backup-simplify]: Simplify (+ 1 0) into 1
0.108 * [backup-simplify]: Simplify (- (/ 1 (- y)) (+ (* -1 (/ 1 (- y))))) into (- (* 2 (/ 1 y)))
0.108 * [taylor]: Taking taylor expansion of (- (* 2 (/ 1 y))) in y
0.108 * [taylor]: Taking taylor expansion of (* 2 (/ 1 y)) in y
0.108 * [taylor]: Taking taylor expansion of 2 in y
0.108 * [backup-simplify]: Simplify 2 into 2
0.108 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.108 * [taylor]: Taking taylor expansion of y in y
0.108 * [backup-simplify]: Simplify 0 into 0
0.108 * [backup-simplify]: Simplify 1 into 1
0.109 * [backup-simplify]: Simplify (/ 1 1) into 1
0.109 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.110 * [backup-simplify]: Simplify (+ (* 2 0) (* 0 1)) into 0
0.110 * [backup-simplify]: Simplify (- 0) into 0
0.110 * [backup-simplify]: Simplify 0 into 0
0.110 * [backup-simplify]: Simplify 0 into 0
0.111 * [backup-simplify]: Simplify (+ 0 0) into 0
0.111 * [backup-simplify]: Simplify (- 0) into 0
0.112 * [backup-simplify]: Simplify (+ 0 0) into 0
0.112 * [backup-simplify]: Simplify (- (/ 0 (- y)) (+ (* -1 (/ 0 (- y))) (* (- (* 2 (/ 1 y))) (/ 1 (- y))))) into (- (* 2 (/ 1 (pow y 2))))
0.112 * [taylor]: Taking taylor expansion of (- (* 2 (/ 1 (pow y 2)))) in y
0.112 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 2))) in y
0.112 * [taylor]: Taking taylor expansion of 2 in y
0.112 * [backup-simplify]: Simplify 2 into 2
0.112 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.112 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.112 * [taylor]: Taking taylor expansion of y in y
0.112 * [backup-simplify]: Simplify 0 into 0
0.112 * [backup-simplify]: Simplify 1 into 1
0.112 * [backup-simplify]: Simplify (* 1 1) into 1
0.113 * [backup-simplify]: Simplify (/ 1 1) into 1
0.114 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
0.114 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.115 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.115 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.116 * [backup-simplify]: Simplify (+ (* 2 0) (+ (* 0 0) (* 0 1))) into 0
0.117 * [backup-simplify]: Simplify (- 0) into 0
0.117 * [backup-simplify]: Simplify 0 into 0
0.117 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.118 * [backup-simplify]: Simplify (+ (* 2 0) (+ (* 0 0) (* 0 1))) into 0
0.119 * [backup-simplify]: Simplify (- 0) into 0
0.119 * [backup-simplify]: Simplify 0 into 0
0.119 * [backup-simplify]: Simplify 0 into 0
0.119 * [backup-simplify]: Simplify (+ 0 0) into 0
0.119 * [backup-simplify]: Simplify (- 0) into 0
0.120 * [backup-simplify]: Simplify (+ 0 0) into 0
0.120 * [backup-simplify]: Simplify (- (/ 0 (- y)) (+ (* -1 (/ 0 (- y))) (* (- (* 2 (/ 1 y))) (/ 0 (- y))) (* (- (* 2 (/ 1 (pow y 2)))) (/ 1 (- y))))) into (- (* 2 (/ 1 (pow y 3))))
0.121 * [taylor]: Taking taylor expansion of (- (* 2 (/ 1 (pow y 3)))) in y
0.121 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 3))) in y
0.121 * [taylor]: Taking taylor expansion of 2 in y
0.121 * [backup-simplify]: Simplify 2 into 2
0.121 * [taylor]: Taking taylor expansion of (/ 1 (pow y 3)) in y
0.121 * [taylor]: Taking taylor expansion of (pow y 3) in y
0.121 * [taylor]: Taking taylor expansion of y in y
0.121 * [backup-simplify]: Simplify 0 into 0
0.121 * [backup-simplify]: Simplify 1 into 1
0.121 * [backup-simplify]: Simplify (* 1 1) into 1
0.121 * [backup-simplify]: Simplify (* 1 1) into 1
0.122 * [backup-simplify]: Simplify (/ 1 1) into 1
0.123 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
0.124 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
0.124 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.125 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
0.126 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.127 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.128 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
0.128 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.129 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.130 * [backup-simplify]: Simplify (+ (* 2 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
0.131 * [backup-simplify]: Simplify (- 0) into 0
0.131 * [backup-simplify]: Simplify 0 into 0
0.131 * [backup-simplify]: Simplify -1 into -1
0.131 * [backup-simplify]: Simplify (/ (+ (/ 1 x) (/ 1 y)) (- (/ 1 x) (/ 1 y))) into (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 x) (/ 1 y)))
0.131 * [approximate]: Taking taylor expansion of (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 x) (/ 1 y))) in (x y) around 0
0.131 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 x) (/ 1 y))) in y
0.131 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in y
0.131 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.131 * [taylor]: Taking taylor expansion of y in y
0.131 * [backup-simplify]: Simplify 0 into 0
0.131 * [backup-simplify]: Simplify 1 into 1
0.132 * [backup-simplify]: Simplify (/ 1 1) into 1
0.132 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.132 * [taylor]: Taking taylor expansion of x in y
0.132 * [backup-simplify]: Simplify x into x
0.132 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
0.132 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in y
0.132 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.132 * [taylor]: Taking taylor expansion of x in y
0.132 * [backup-simplify]: Simplify x into x
0.132 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
0.132 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.132 * [taylor]: Taking taylor expansion of y in y
0.132 * [backup-simplify]: Simplify 0 into 0
0.132 * [backup-simplify]: Simplify 1 into 1
0.132 * [backup-simplify]: Simplify (/ 1 1) into 1
0.133 * [backup-simplify]: Simplify (+ 1 0) into 1
0.133 * [backup-simplify]: Simplify (- 1) into -1
0.133 * [backup-simplify]: Simplify (+ 0 -1) into -1
0.134 * [backup-simplify]: Simplify (/ 1 -1) into -1
0.134 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 x) (/ 1 y))) in x
0.134 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.134 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.134 * [taylor]: Taking taylor expansion of y in x
0.134 * [backup-simplify]: Simplify y into y
0.134 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.134 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.134 * [taylor]: Taking taylor expansion of x in x
0.134 * [backup-simplify]: Simplify 0 into 0
0.134 * [backup-simplify]: Simplify 1 into 1
0.134 * [backup-simplify]: Simplify (/ 1 1) into 1
0.135 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.135 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.135 * [taylor]: Taking taylor expansion of x in x
0.135 * [backup-simplify]: Simplify 0 into 0
0.135 * [backup-simplify]: Simplify 1 into 1
0.135 * [backup-simplify]: Simplify (/ 1 1) into 1
0.135 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.135 * [taylor]: Taking taylor expansion of y in x
0.135 * [backup-simplify]: Simplify y into y
0.135 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.136 * [backup-simplify]: Simplify (+ 0 1) into 1
0.136 * [backup-simplify]: Simplify (+ 1 0) into 1
0.136 * [backup-simplify]: Simplify (/ 1 1) into 1
0.136 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 x) (/ 1 y))) in x
0.136 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.136 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.136 * [taylor]: Taking taylor expansion of y in x
0.136 * [backup-simplify]: Simplify y into y
0.137 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.137 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.137 * [taylor]: Taking taylor expansion of x in x
0.137 * [backup-simplify]: Simplify 0 into 0
0.137 * [backup-simplify]: Simplify 1 into 1
0.137 * [backup-simplify]: Simplify (/ 1 1) into 1
0.137 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.137 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.137 * [taylor]: Taking taylor expansion of x in x
0.137 * [backup-simplify]: Simplify 0 into 0
0.137 * [backup-simplify]: Simplify 1 into 1
0.137 * [backup-simplify]: Simplify (/ 1 1) into 1
0.138 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.138 * [taylor]: Taking taylor expansion of y in x
0.138 * [backup-simplify]: Simplify y into y
0.138 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.138 * [backup-simplify]: Simplify (+ 0 1) into 1
0.138 * [backup-simplify]: Simplify (+ 1 0) into 1
0.139 * [backup-simplify]: Simplify (/ 1 1) into 1
0.139 * [taylor]: Taking taylor expansion of 1 in y
0.139 * [backup-simplify]: Simplify 1 into 1
0.139 * [backup-simplify]: Simplify 1 into 1
0.140 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.140 * [backup-simplify]: Simplify (+ (/ 1 y) 0) into (/ 1 y)
0.140 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.141 * [backup-simplify]: Simplify (- (/ 1 y)) into (- (/ 1 y))
0.141 * [backup-simplify]: Simplify (+ 0 (- (/ 1 y))) into (- (/ 1 y))
0.141 * [backup-simplify]: Simplify (- (/ (/ 1 y) 1) (+ (* 1 (/ (- (/ 1 y)) 1)))) into (* 2 (/ 1 y))
0.141 * [taylor]: Taking taylor expansion of (* 2 (/ 1 y)) in y
0.141 * [taylor]: Taking taylor expansion of 2 in y
0.141 * [backup-simplify]: Simplify 2 into 2
0.141 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.141 * [taylor]: Taking taylor expansion of y in y
0.141 * [backup-simplify]: Simplify 0 into 0
0.141 * [backup-simplify]: Simplify 1 into 1
0.141 * [backup-simplify]: Simplify (/ 1 1) into 1
0.142 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.143 * [backup-simplify]: Simplify (+ (* 2 0) (* 0 1)) into 0
0.143 * [backup-simplify]: Simplify 0 into 0
0.143 * [backup-simplify]: Simplify 0 into 0
0.143 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
0.144 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.144 * [backup-simplify]: Simplify (+ 0 0) into 0
0.145 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.145 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
0.145 * [backup-simplify]: Simplify (- 0) into 0
0.146 * [backup-simplify]: Simplify (+ 0 0) into 0
0.147 * [backup-simplify]: Simplify (- (/ 0 1) (+ (* 1 (/ 0 1)) (* (* 2 (/ 1 y)) (/ (- (/ 1 y)) 1)))) into (* 2 (/ 1 (pow y 2)))
0.147 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 2))) in y
0.147 * [taylor]: Taking taylor expansion of 2 in y
0.147 * [backup-simplify]: Simplify 2 into 2
0.147 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.147 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.147 * [taylor]: Taking taylor expansion of y in y
0.147 * [backup-simplify]: Simplify 0 into 0
0.147 * [backup-simplify]: Simplify 1 into 1
0.147 * [backup-simplify]: Simplify (* 1 1) into 1
0.148 * [backup-simplify]: Simplify (/ 1 1) into 1
0.149 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
0.150 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.150 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.151 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.152 * [backup-simplify]: Simplify (+ (* 2 0) (+ (* 0 0) (* 0 1))) into 0
0.152 * [backup-simplify]: Simplify 0 into 0
0.153 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.154 * [backup-simplify]: Simplify (+ (* 2 0) (+ (* 0 0) (* 0 1))) into 0
0.154 * [backup-simplify]: Simplify 0 into 0
0.154 * [backup-simplify]: Simplify 0 into 0
0.154 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.155 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.155 * [backup-simplify]: Simplify (+ 0 0) into 0
0.156 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.156 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.157 * [backup-simplify]: Simplify (- 0) into 0
0.157 * [backup-simplify]: Simplify (+ 0 0) into 0
0.159 * [backup-simplify]: Simplify (- (/ 0 1) (+ (* 1 (/ 0 1)) (* (* 2 (/ 1 y)) (/ 0 1)) (* (* 2 (/ 1 (pow y 2))) (/ (- (/ 1 y)) 1)))) into (* 2 (/ 1 (pow y 3)))
0.159 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 3))) in y
0.159 * [taylor]: Taking taylor expansion of 2 in y
0.159 * [backup-simplify]: Simplify 2 into 2
0.159 * [taylor]: Taking taylor expansion of (/ 1 (pow y 3)) in y
0.159 * [taylor]: Taking taylor expansion of (pow y 3) in y
0.159 * [taylor]: Taking taylor expansion of y in y
0.159 * [backup-simplify]: Simplify 0 into 0
0.159 * [backup-simplify]: Simplify 1 into 1
0.159 * [backup-simplify]: Simplify (* 1 1) into 1
0.160 * [backup-simplify]: Simplify (* 1 1) into 1
0.160 * [backup-simplify]: Simplify (/ 1 1) into 1
0.161 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
0.162 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
0.163 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.164 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
0.164 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.165 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.166 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
0.166 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.167 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.168 * [backup-simplify]: Simplify (+ (* 2 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
0.168 * [backup-simplify]: Simplify 0 into 0
0.168 * [backup-simplify]: Simplify 1 into 1
0.169 * [backup-simplify]: Simplify (/ (+ (/ 1 (- x)) (/ 1 (- y))) (- (/ 1 (- x)) (/ 1 (- y)))) into (* -1 (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))))
0.169 * [approximate]: Taking taylor expansion of (* -1 (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x)))) in (x y) around 0
0.169 * [taylor]: Taking taylor expansion of (* -1 (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x)))) in y
0.169 * [taylor]: Taking taylor expansion of -1 in y
0.169 * [backup-simplify]: Simplify -1 into -1
0.169 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) in y
0.169 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in y
0.169 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.169 * [taylor]: Taking taylor expansion of y in y
0.169 * [backup-simplify]: Simplify 0 into 0
0.169 * [backup-simplify]: Simplify 1 into 1
0.169 * [backup-simplify]: Simplify (/ 1 1) into 1
0.169 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.169 * [taylor]: Taking taylor expansion of x in y
0.169 * [backup-simplify]: Simplify x into x
0.169 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
0.169 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in y
0.169 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.169 * [taylor]: Taking taylor expansion of y in y
0.169 * [backup-simplify]: Simplify 0 into 0
0.170 * [backup-simplify]: Simplify 1 into 1
0.170 * [backup-simplify]: Simplify (/ 1 1) into 1
0.170 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.170 * [taylor]: Taking taylor expansion of x in y
0.170 * [backup-simplify]: Simplify x into x
0.170 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
0.170 * [backup-simplify]: Simplify (+ 1 0) into 1
0.171 * [backup-simplify]: Simplify (+ 1 0) into 1
0.171 * [backup-simplify]: Simplify (/ 1 1) into 1
0.171 * [taylor]: Taking taylor expansion of (* -1 (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x)))) in x
0.171 * [taylor]: Taking taylor expansion of -1 in x
0.171 * [backup-simplify]: Simplify -1 into -1
0.171 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) in x
0.171 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.171 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.171 * [taylor]: Taking taylor expansion of y in x
0.171 * [backup-simplify]: Simplify y into y
0.172 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.172 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.172 * [taylor]: Taking taylor expansion of x in x
0.172 * [backup-simplify]: Simplify 0 into 0
0.172 * [backup-simplify]: Simplify 1 into 1
0.173 * [backup-simplify]: Simplify (/ 1 1) into 1
0.173 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.173 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.173 * [taylor]: Taking taylor expansion of y in x
0.173 * [backup-simplify]: Simplify y into y
0.173 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.173 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.173 * [taylor]: Taking taylor expansion of x in x
0.173 * [backup-simplify]: Simplify 0 into 0
0.173 * [backup-simplify]: Simplify 1 into 1
0.173 * [backup-simplify]: Simplify (/ 1 1) into 1
0.174 * [backup-simplify]: Simplify (+ 0 1) into 1
0.174 * [backup-simplify]: Simplify (- 1) into -1
0.175 * [backup-simplify]: Simplify (+ 0 -1) into -1
0.175 * [backup-simplify]: Simplify (/ 1 -1) into -1
0.175 * [taylor]: Taking taylor expansion of (* -1 (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x)))) in x
0.175 * [taylor]: Taking taylor expansion of -1 in x
0.175 * [backup-simplify]: Simplify -1 into -1
0.175 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) in x
0.175 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.175 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.175 * [taylor]: Taking taylor expansion of y in x
0.175 * [backup-simplify]: Simplify y into y
0.175 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.175 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.175 * [taylor]: Taking taylor expansion of x in x
0.175 * [backup-simplify]: Simplify 0 into 0
0.175 * [backup-simplify]: Simplify 1 into 1
0.176 * [backup-simplify]: Simplify (/ 1 1) into 1
0.176 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.176 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.176 * [taylor]: Taking taylor expansion of y in x
0.176 * [backup-simplify]: Simplify y into y
0.176 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.176 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.176 * [taylor]: Taking taylor expansion of x in x
0.176 * [backup-simplify]: Simplify 0 into 0
0.176 * [backup-simplify]: Simplify 1 into 1
0.176 * [backup-simplify]: Simplify (/ 1 1) into 1
0.177 * [backup-simplify]: Simplify (+ 0 1) into 1
0.177 * [backup-simplify]: Simplify (- 1) into -1
0.178 * [backup-simplify]: Simplify (+ 0 -1) into -1
0.178 * [backup-simplify]: Simplify (/ 1 -1) into -1
0.179 * [backup-simplify]: Simplify (* -1 -1) into 1
0.179 * [taylor]: Taking taylor expansion of 1 in y
0.179 * [backup-simplify]: Simplify 1 into 1
0.179 * [backup-simplify]: Simplify 1 into 1
0.179 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.180 * [backup-simplify]: Simplify (+ (/ 1 y) 0) into (/ 1 y)
0.180 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.181 * [backup-simplify]: Simplify (- 0) into 0
0.181 * [backup-simplify]: Simplify (+ (/ 1 y) 0) into (/ 1 y)
0.181 * [backup-simplify]: Simplify (- (/ (/ 1 y) -1) (+ (* -1 (/ (/ 1 y) -1)))) into (- (* 2 (/ 1 y)))
0.182 * [backup-simplify]: Simplify (+ (* -1 (- (* 2 (/ 1 y)))) (* 0 -1)) into (* 2 (/ 1 y))
0.182 * [taylor]: Taking taylor expansion of (* 2 (/ 1 y)) in y
0.182 * [taylor]: Taking taylor expansion of 2 in y
0.182 * [backup-simplify]: Simplify 2 into 2
0.182 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.182 * [taylor]: Taking taylor expansion of y in y
0.182 * [backup-simplify]: Simplify 0 into 0
0.182 * [backup-simplify]: Simplify 1 into 1
0.182 * [backup-simplify]: Simplify (/ 1 1) into 1
0.183 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.184 * [backup-simplify]: Simplify (+ (* 2 0) (* 0 1)) into 0
0.184 * [backup-simplify]: Simplify 0 into 0
0.184 * [backup-simplify]: Simplify 0 into 0
0.184 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
0.185 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.185 * [backup-simplify]: Simplify (+ 0 0) into 0
0.185 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
0.186 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.186 * [backup-simplify]: Simplify (- 0) into 0
0.187 * [backup-simplify]: Simplify (+ 0 0) into 0
0.188 * [backup-simplify]: Simplify (- (/ 0 -1) (+ (* -1 (/ 0 -1)) (* (- (* 2 (/ 1 y))) (/ (/ 1 y) -1)))) into (- (* 2 (/ 1 (pow y 2))))
0.189 * [backup-simplify]: Simplify (+ (* -1 (- (* 2 (/ 1 (pow y 2))))) (+ (* 0 (- (* 2 (/ 1 y)))) (* 0 -1))) into (* 2 (/ 1 (pow y 2)))
0.189 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 2))) in y
0.189 * [taylor]: Taking taylor expansion of 2 in y
0.189 * [backup-simplify]: Simplify 2 into 2
0.189 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.189 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.189 * [taylor]: Taking taylor expansion of y in y
0.189 * [backup-simplify]: Simplify 0 into 0
0.189 * [backup-simplify]: Simplify 1 into 1
0.189 * [backup-simplify]: Simplify (* 1 1) into 1
0.190 * [backup-simplify]: Simplify (/ 1 1) into 1
0.191 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
0.191 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.192 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.193 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.194 * [backup-simplify]: Simplify (+ (* 2 0) (+ (* 0 0) (* 0 1))) into 0
0.194 * [backup-simplify]: Simplify 0 into 0
0.195 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.196 * [backup-simplify]: Simplify (+ (* 2 0) (+ (* 0 0) (* 0 1))) into 0
0.196 * [backup-simplify]: Simplify 0 into 0
0.196 * [backup-simplify]: Simplify 0 into 0
0.196 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.202 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.203 * [backup-simplify]: Simplify (+ 0 0) into 0
0.203 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.204 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.204 * [backup-simplify]: Simplify (- 0) into 0
0.205 * [backup-simplify]: Simplify (+ 0 0) into 0
0.207 * [backup-simplify]: Simplify (- (/ 0 -1) (+ (* -1 (/ 0 -1)) (* (- (* 2 (/ 1 y))) (/ 0 -1)) (* (- (* 2 (/ 1 (pow y 2)))) (/ (/ 1 y) -1)))) into (- (* 2 (/ 1 (pow y 3))))
0.208 * [backup-simplify]: Simplify (+ (* -1 (- (* 2 (/ 1 (pow y 3))))) (+ (* 0 (- (* 2 (/ 1 (pow y 2))))) (+ (* 0 (- (* 2 (/ 1 y)))) (* 0 -1)))) into (* 2 (/ 1 (pow y 3)))
0.208 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 3))) in y
0.208 * [taylor]: Taking taylor expansion of 2 in y
0.208 * [backup-simplify]: Simplify 2 into 2
0.208 * [taylor]: Taking taylor expansion of (/ 1 (pow y 3)) in y
0.208 * [taylor]: Taking taylor expansion of (pow y 3) in y
0.208 * [taylor]: Taking taylor expansion of y in y
0.208 * [backup-simplify]: Simplify 0 into 0
0.208 * [backup-simplify]: Simplify 1 into 1
0.208 * [backup-simplify]: Simplify (* 1 1) into 1
0.209 * [backup-simplify]: Simplify (* 1 1) into 1
0.209 * [backup-simplify]: Simplify (/ 1 1) into 1
0.210 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
0.211 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
0.212 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.213 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
0.214 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.214 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.215 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
0.216 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.217 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.218 * [backup-simplify]: Simplify (+ (* 2 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
0.218 * [backup-simplify]: Simplify 0 into 0
0.218 * [backup-simplify]: Simplify 1 into 1
0.218 * * * [progress]: simplifying candidates
0.220 * [simplify]: Simplifying:
  (- (log (+ x y)) (log (- x y)))
  (log (/ (+ x y) (- x y)))
  (exp (/ (+ x y) (- x y)))
  (/ (* (* (+ x y) (+ x y)) (+ x y)) (* (* (- x y) (- x y)) (- x y)))
  (* (cbrt (/ (+ x y) (- x y))) (cbrt (/ (+ x y) (- x y))))
  (cbrt (/ (+ x y) (- x y)))
  (* (* (/ (+ x y) (- x y)) (/ (+ x y) (- x y))) (/ (+ x y) (- x y)))
  (sqrt (/ (+ x y) (- x y)))
  (sqrt (/ (+ x y) (- x y)))
  (- (+ x y))
  (- (- x y))
  (/ (* (cbrt (+ x y)) (cbrt (+ x y))) (* (cbrt (- x y)) (cbrt (- x y))))
  (/ (cbrt (+ x y)) (cbrt (- x y)))
  (/ (* (cbrt (+ x y)) (cbrt (+ x y))) (sqrt (- x y)))
  (/ (cbrt (+ x y)) (sqrt (- x y)))
  (/ (* (cbrt (+ x y)) (cbrt (+ x y))) 1)
  (/ (cbrt (+ x y)) (- x y))
  (/ (* (cbrt (+ x y)) (cbrt (+ x y))) (+ (sqrt x) (sqrt y)))
  (/ (cbrt (+ x y)) (- (sqrt x) (sqrt y)))
  (/ (* (cbrt (+ x y)) (cbrt (+ x y))) 1)
  (/ (cbrt (+ x y)) (- x y))
  (/ (sqrt (+ x y)) (* (cbrt (- x y)) (cbrt (- x y))))
  (/ (sqrt (+ x y)) (cbrt (- x y)))
  (/ (sqrt (+ x y)) (sqrt (- x y)))
  (/ (sqrt (+ x y)) (sqrt (- x y)))
  (/ (sqrt (+ x y)) 1)
  (/ (sqrt (+ x y)) (- x y))
  (/ (sqrt (+ x y)) (+ (sqrt x) (sqrt y)))
  (/ (sqrt (+ x y)) (- (sqrt x) (sqrt y)))
  (/ (sqrt (+ x y)) 1)
  (/ (sqrt (+ x y)) (- x y))
  (/ 1 (* (cbrt (- x y)) (cbrt (- x y))))
  (/ (+ x y) (cbrt (- x y)))
  (/ 1 (sqrt (- x y)))
  (/ (+ x y) (sqrt (- x y)))
  (/ 1 1)
  (/ (+ x y) (- x y))
  (/ 1 (+ (sqrt x) (sqrt y)))
  (/ (+ x y) (- (sqrt x) (sqrt y)))
  (/ 1 1)
  (/ (+ x y) (- x y))
  (/ 1 (* (cbrt (- x y)) (cbrt (- x y))))
  (/ (+ x y) (cbrt (- x y)))
  (/ 1 (sqrt (- x y)))
  (/ (+ x y) (sqrt (- x y)))
  (/ 1 1)
  (/ (+ x y) (- x y))
  (/ 1 (+ (sqrt x) (sqrt y)))
  (/ (+ x y) (- (sqrt x) (sqrt y)))
  (/ 1 1)
  (/ (+ x y) (- x y))
  (/ 1 (- x y))
  (/ (- x y) (+ x y))
  (/ (+ x y) (* (cbrt (- x y)) (cbrt (- x y))))
  (/ (+ x y) (sqrt (- x y)))
  (/ (+ x y) 1)
  (/ (+ x y) (+ (sqrt x) (sqrt y)))
  (/ (+ x y) 1)
  (/ (- x y) (cbrt (+ x y)))
  (/ (- x y) (sqrt (+ x y)))
  (/ (- x y) (+ x y))
  (/ (- x y) (+ x y))
  (/ (+ x y) (- (pow x 3) (pow y 3)))
  (/ (+ x y) (- (* x x) (* y y)))
  (* (- x y) (+ (* x x) (- (* y y) (* x y))))
  (* (- x y) (- x y))
  -1
  1
  1
0.222 * * [simplify]: Extracting # 0 : cost  0
0.222 * * [simplify]: Extracting # 1 : cost  0
0.222 * * [simplify]: Extracting # 2 : cost  0
0.222 * * [simplify]: Extracting # 3 : cost  0
0.222 * * [simplify]: Extracting # 4 : cost  0
0.223 * * [simplify]: Extracting # 5 : cost  0
0.223 * * [simplify]: Extracting # 6 : cost  0
0.223 * * [simplify]: iteration  0 :  76  enodes  (cost  590 )
0.254 * * [simplify]: Extracting # 0 : cost  0
0.254 * * [simplify]: Extracting # 1 : cost  0
0.254 * * [simplify]: Extracting # 2 : cost  0
0.255 * * [simplify]: Extracting # 3 : cost  0
0.255 * * [simplify]: iteration  1 :  175  enodes  (cost  567 )
0.307 * * [simplify]: Extracting # 0 : cost  0
0.308 * * [simplify]: Extracting # 1 : cost  0
0.310 * * [simplify]: Extracting # 2 : cost  0
0.311 * * [simplify]: Extracting # 3 : cost  0
0.313 * * [simplify]: Extracting # 4 : cost  0
0.314 * * [simplify]: iteration  2 :  587  enodes  (cost  541 )
0.843 * * [simplify]: Extracting # 0 : cost  0
0.849 * * [simplify]: Extracting # 1 : cost  0
0.853 * * [simplify]: Extracting # 2 : cost  0
0.857 * * [simplify]: Extracting # 3 : cost  0
0.861 * * [simplify]: Extracting # 4 : cost  0
0.865 * * [simplify]: iteration  3 :  3427  enodes  (cost  532 )
3.143 * * [simplify]: Extracting # 0 : cost  0
3.177 * * [simplify]: Extracting # 1 : cost  0
3.188 * * [simplify]: Extracting # 2 : cost  0
3.198 * * [simplify]: iteration done:  5002  enodes  (cost  532 )
3.198 * [simplify]: Simplified to:
  (log (/ (+ x y) (- x y)))
  (log (/ (+ x y) (- x y)))
  (exp (/ (+ x y) (- x y)))
  (pow (/ (+ x y) (- x y)) 3)
  (* (cbrt (/ (+ x y) (- x y))) (cbrt (/ (+ x y) (- x y))))
  (cbrt (/ (+ x y) (- x y)))
  (pow (/ (+ x y) (- x y)) 3)
  (sqrt (/ (+ x y) (- x y)))
  (sqrt (/ (+ x y) (- x y)))
  (- (+ x y))
  (- y x)
  (/ (* (cbrt (+ x y)) (cbrt (+ x y))) (* (cbrt (- x y)) (cbrt (- x y))))
  (/ (cbrt (+ x y)) (cbrt (- x y)))
  (/ (* (cbrt (+ x y)) (cbrt (+ x y))) (sqrt (- x y)))
  (/ (cbrt (+ x y)) (sqrt (- x y)))
  (* (cbrt (+ x y)) (cbrt (+ x y)))
  (/ (cbrt (+ x y)) (- x y))
  (/ (* (cbrt (+ x y)) (cbrt (+ x y))) (+ (sqrt x) (sqrt y)))
  (/ (cbrt (+ x y)) (- (sqrt x) (sqrt y)))
  (* (cbrt (+ x y)) (cbrt (+ x y)))
  (/ (cbrt (+ x y)) (- x y))
  (/ (sqrt (+ x y)) (* (cbrt (- x y)) (cbrt (- x y))))
  (/ (sqrt (+ x y)) (cbrt (- x y)))
  (/ (sqrt (+ x y)) (sqrt (- x y)))
  (/ (sqrt (+ x y)) (sqrt (- x y)))
  (sqrt (+ x y))
  (/ (sqrt (+ x y)) (- x y))
  (/ (sqrt (+ x y)) (+ (sqrt x) (sqrt y)))
  (/ (sqrt (+ x y)) (- (sqrt x) (sqrt y)))
  (sqrt (+ x y))
  (/ (sqrt (+ x y)) (- x y))
  (/ 1 (* (cbrt (- x y)) (cbrt (- x y))))
  (/ (+ x y) (cbrt (- x y)))
  (/ 1 (sqrt (- x y)))
  (/ (+ x y) (sqrt (- x y)))
  1
  (/ (+ x y) (- x y))
  (/ 1 (+ (sqrt x) (sqrt y)))
  (/ (+ x y) (- (sqrt x) (sqrt y)))
  1
  (/ (+ x y) (- x y))
  (/ 1 (* (cbrt (- x y)) (cbrt (- x y))))
  (/ (+ x y) (cbrt (- x y)))
  (/ 1 (sqrt (- x y)))
  (/ (+ x y) (sqrt (- x y)))
  1
  (/ (+ x y) (- x y))
  (/ 1 (+ (sqrt x) (sqrt y)))
  (/ (+ x y) (- (sqrt x) (sqrt y)))
  1
  (/ (+ x y) (- x y))
  (/ 1 (- x y))
  (/ (- x y) (+ x y))
  (/ (+ x y) (* (cbrt (- x y)) (cbrt (- x y))))
  (/ (+ x y) (sqrt (- x y)))
  (+ x y)
  (/ (+ x y) (+ (sqrt x) (sqrt y)))
  (+ x y)
  (/ (- x y) (cbrt (+ x y)))
  (/ (- x y) (sqrt (+ x y)))
  (/ (- x y) (+ x y))
  (/ (- x y) (+ x y))
  (/ (+ x y) (- (pow x 3) (pow y 3)))
  (/ 1 (- x y))
  (* (+ (* y (- y x)) (* x x)) (- x y))
  (* (- x y) (- x y))
  -1
  1
  1
3.199 * * * [progress]: adding candidates to table
3.347 * [progress]: [Phase 3 of 3] Extracting.
3.349 * [simplify]: Simplifying:
  (/ (+ x y) (- x y))
3.349 * * [simplify]: Extracting # 0 : cost  0
3.350 * * [simplify]: Extracting # 1 : cost  0
3.350 * * [simplify]: Extracting # 2 : cost  0
3.350 * * [simplify]: Extracting # 3 : cost  0
3.350 * * [simplify]: Extracting # 4 : cost  0
3.350 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
3.350 * * [simplify]: Extracting # 0 : cost  0
3.350 * * [simplify]: iteration  1 :  6  enodes  (cost  7 )
3.351 * * [simplify]: Extracting # 0 : cost  0
3.351 * * [simplify]: iteration done:  6  enodes  (cost  7 )
3.351 * [simplify]: Simplified to:
  (/ (+ x y) (- x y))
4.028 * [regime-testing]: Baseline error score: 0.022984076135418377
4.032 * [regime-testing]: Oracle error score: 0.022984076135418377
4.032 * [regime-testing]: End program error score: 0.022984076135418377
4.073 * [regime-testing]: Target error score: 0.02134027729904736