13.758 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.038 * * * [progress]: [2/2] Setting up program.
0.042 * [progress]: [Phase 2 of 3] Improving.
0.042 * [simplify]: Simplifying:
  (- (* x x) (* y y))
0.042 * * [simplify]: Extracting # 0 : cost  0
0.042 * * [simplify]: Extracting # 1 : cost  0
0.042 * * [simplify]: Extracting # 2 : cost  0
0.042 * * [simplify]: Extracting # 3 : cost  0
0.042 * * [simplify]: Extracting # 4 : cost  0
0.043 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.044 * * [simplify]: Extracting # 0 : cost  0
0.044 * * [simplify]: Extracting # 1 : cost  0
0.044 * * [simplify]: Extracting # 2 : cost  0
0.044 * * [simplify]: iteration  1 :  11  enodes  (cost  7 )
0.047 * * [simplify]: Extracting # 0 : cost  0
0.047 * * [simplify]: Extracting # 1 : cost  0
0.047 * * [simplify]: Extracting # 2 : cost  0
0.047 * * [simplify]: iteration  2 :  18  enodes  (cost  7 )
0.051 * * [simplify]: Extracting # 0 : cost  0
0.052 * * [simplify]: Extracting # 1 : cost  0
0.052 * * [simplify]: Extracting # 2 : cost  0
0.052 * * [simplify]: iteration  3 :  35  enodes  (cost  7 )
0.063 * * [simplify]: Extracting # 0 : cost  0
0.063 * * [simplify]: Extracting # 1 : cost  0
0.063 * * [simplify]: Extracting # 2 : cost  0
0.063 * * [simplify]: iteration  4 :  67  enodes  (cost  7 )
0.090 * * [simplify]: Extracting # 0 : cost  0
0.090 * * [simplify]: Extracting # 1 : cost  0
0.091 * * [simplify]: Extracting # 2 : cost  0
0.091 * * [simplify]: iteration  5 :  160  enodes  (cost  7 )
0.160 * * [simplify]: Extracting # 0 : cost  0
0.161 * * [simplify]: Extracting # 1 : cost  0
0.161 * * [simplify]: Extracting # 2 : cost  0
0.162 * * [simplify]: Extracting # 3 : cost  0
0.162 * * [simplify]: iteration  6 :  372  enodes  (cost  7 )
0.372 * * [simplify]: Extracting # 0 : cost  0
0.373 * * [simplify]: Extracting # 1 : cost  0
0.374 * * [simplify]: Extracting # 2 : cost  0
0.374 * * [simplify]: Extracting # 3 : cost  0
0.375 * * [simplify]: Extracting # 4 : cost  0
0.376 * * [simplify]: iteration  7 :  916  enodes  (cost  7 )
1.880 * * [simplify]: Extracting # 0 : cost  0
1.888 * * [simplify]: Extracting # 1 : cost  0
1.891 * * [simplify]: Extracting # 2 : cost  0
1.894 * * [simplify]: Extracting # 3 : cost  0
1.897 * * [simplify]: Extracting # 4 : cost  0
1.900 * * [simplify]: iteration  8 :  3785  enodes  (cost  7 )
4.072 * * [simplify]: Extracting # 0 : cost  0
4.091 * * [simplify]: Extracting # 1 : cost  0
4.095 * * [simplify]: iteration done:  5000  enodes  (cost  7 )
4.095 * [simplify]: Simplified to:
  (* (- x y) (+ x y))
4.098 * * [progress]: iteration 1 / 4
4.098 * * * [progress]: picking best candidate
4.107 * * * * [pick]: Picked  #<alt (λ (x y) (- (* x x) (* y y)))>
4.107 * * * [progress]: localizing error
4.121 * * * [progress]: generating rewritten candidates
4.122 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
4.142 * * * [progress]: generating series expansions
4.143 * * * * [progress]: [ 1 / 1 ] generating series at (2)
4.143 * [backup-simplify]: Simplify (- (* x x) (* y y)) into (- (pow x 2) (pow y 2))
4.143 * [approximate]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in (x y) around 0
4.143 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in y
4.143 * [taylor]: Taking taylor expansion of (pow x 2) in y
4.143 * [taylor]: Taking taylor expansion of x in y
4.143 * [backup-simplify]: Simplify x into x
4.143 * [taylor]: Taking taylor expansion of (pow y 2) in y
4.143 * [taylor]: Taking taylor expansion of y in y
4.143 * [backup-simplify]: Simplify 0 into 0
4.143 * [backup-simplify]: Simplify 1 into 1
4.143 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
4.143 * [taylor]: Taking taylor expansion of (pow x 2) in x
4.143 * [taylor]: Taking taylor expansion of x in x
4.143 * [backup-simplify]: Simplify 0 into 0
4.143 * [backup-simplify]: Simplify 1 into 1
4.143 * [taylor]: Taking taylor expansion of (pow y 2) in x
4.143 * [taylor]: Taking taylor expansion of y in x
4.143 * [backup-simplify]: Simplify y into y
4.143 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
4.143 * [taylor]: Taking taylor expansion of (pow x 2) in x
4.143 * [taylor]: Taking taylor expansion of x in x
4.143 * [backup-simplify]: Simplify 0 into 0
4.143 * [backup-simplify]: Simplify 1 into 1
4.143 * [taylor]: Taking taylor expansion of (pow y 2) in x
4.143 * [taylor]: Taking taylor expansion of y in x
4.143 * [backup-simplify]: Simplify y into y
4.143 * [backup-simplify]: Simplify (* y y) into (pow y 2)
4.143 * [backup-simplify]: Simplify (- (pow y 2)) into (- (pow y 2))
4.143 * [backup-simplify]: Simplify (+ 0 (- (pow y 2))) into (- (pow y 2))
4.143 * [taylor]: Taking taylor expansion of (- (pow y 2)) in y
4.144 * [taylor]: Taking taylor expansion of (pow y 2) in y
4.144 * [taylor]: Taking taylor expansion of y in y
4.144 * [backup-simplify]: Simplify 0 into 0
4.144 * [backup-simplify]: Simplify 1 into 1
4.144 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
4.144 * [backup-simplify]: Simplify (- 0) into 0
4.144 * [backup-simplify]: Simplify (+ 0 0) into 0
4.144 * [taylor]: Taking taylor expansion of 0 in y
4.144 * [backup-simplify]: Simplify 0 into 0
4.144 * [backup-simplify]: Simplify 0 into 0
4.145 * [backup-simplify]: Simplify (* 1 1) into 1
4.145 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
4.145 * [backup-simplify]: Simplify (- 0) into 0
4.146 * [backup-simplify]: Simplify (+ 1 0) into 1
4.146 * [taylor]: Taking taylor expansion of 1 in y
4.146 * [backup-simplify]: Simplify 1 into 1
4.146 * [backup-simplify]: Simplify 1 into 1
4.146 * [backup-simplify]: Simplify 0 into 0
4.146 * [backup-simplify]: Simplify (* 1 1) into 1
4.146 * [backup-simplify]: Simplify (- 1) into -1
4.146 * [backup-simplify]: Simplify -1 into -1
4.147 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
4.147 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))) into 0
4.147 * [backup-simplify]: Simplify (- 0) into 0
4.148 * [backup-simplify]: Simplify (+ 0 0) into 0
4.148 * [taylor]: Taking taylor expansion of 0 in y
4.148 * [backup-simplify]: Simplify 0 into 0
4.148 * [backup-simplify]: Simplify 0 into 0
4.148 * [backup-simplify]: Simplify 0 into 0
4.148 * [backup-simplify]: Simplify 0 into 0
4.148 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
4.148 * [backup-simplify]: Simplify (- 0) into 0
4.148 * [backup-simplify]: Simplify 0 into 0
4.149 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
4.150 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 y))))) into 0
4.150 * [backup-simplify]: Simplify (- 0) into 0
4.150 * [backup-simplify]: Simplify (+ 0 0) into 0
4.150 * [taylor]: Taking taylor expansion of 0 in y
4.150 * [backup-simplify]: Simplify 0 into 0
4.150 * [backup-simplify]: Simplify 0 into 0
4.150 * [backup-simplify]: Simplify 0 into 0
4.150 * [backup-simplify]: Simplify (+ (* -1 (pow (* y 1) 2)) (* 1 (pow (* 1 x) 2))) into (- (pow x 2) (pow y 2))
4.151 * [backup-simplify]: Simplify (- (* (/ 1 x) (/ 1 x)) (* (/ 1 y) (/ 1 y))) into (- (/ 1 (pow x 2)) (/ 1 (pow y 2)))
4.151 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
4.151 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
4.151 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
4.151 * [taylor]: Taking taylor expansion of (pow x 2) in y
4.151 * [taylor]: Taking taylor expansion of x in y
4.151 * [backup-simplify]: Simplify x into x
4.151 * [backup-simplify]: Simplify (* x x) into (pow x 2)
4.151 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
4.151 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
4.151 * [taylor]: Taking taylor expansion of (pow y 2) in y
4.151 * [taylor]: Taking taylor expansion of y in y
4.151 * [backup-simplify]: Simplify 0 into 0
4.151 * [backup-simplify]: Simplify 1 into 1
4.151 * [backup-simplify]: Simplify (* 1 1) into 1
4.151 * [backup-simplify]: Simplify (/ 1 1) into 1
4.151 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
4.151 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
4.152 * [taylor]: Taking taylor expansion of (pow x 2) in x
4.152 * [taylor]: Taking taylor expansion of x in x
4.152 * [backup-simplify]: Simplify 0 into 0
4.152 * [backup-simplify]: Simplify 1 into 1
4.152 * [backup-simplify]: Simplify (* 1 1) into 1
4.152 * [backup-simplify]: Simplify (/ 1 1) into 1
4.152 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
4.152 * [taylor]: Taking taylor expansion of (pow y 2) in x
4.152 * [taylor]: Taking taylor expansion of y in x
4.152 * [backup-simplify]: Simplify y into y
4.152 * [backup-simplify]: Simplify (* y y) into (pow y 2)
4.152 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
4.152 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
4.152 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
4.152 * [taylor]: Taking taylor expansion of (pow x 2) in x
4.152 * [taylor]: Taking taylor expansion of x in x
4.152 * [backup-simplify]: Simplify 0 into 0
4.152 * [backup-simplify]: Simplify 1 into 1
4.153 * [backup-simplify]: Simplify (* 1 1) into 1
4.153 * [backup-simplify]: Simplify (/ 1 1) into 1
4.153 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
4.153 * [taylor]: Taking taylor expansion of (pow y 2) in x
4.153 * [taylor]: Taking taylor expansion of y in x
4.153 * [backup-simplify]: Simplify y into y
4.153 * [backup-simplify]: Simplify (* y y) into (pow y 2)
4.153 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
4.153 * [backup-simplify]: Simplify (+ 1 0) into 1
4.153 * [taylor]: Taking taylor expansion of 1 in y
4.153 * [backup-simplify]: Simplify 1 into 1
4.154 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
4.154 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
4.154 * [backup-simplify]: Simplify (+ 0 0) into 0
4.154 * [taylor]: Taking taylor expansion of 0 in y
4.154 * [backup-simplify]: Simplify 0 into 0
4.155 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
4.155 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
4.156 * [backup-simplify]: Simplify (- (/ 1 (pow y 2))) into (- (/ 1 (pow y 2)))
4.156 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 2)))) into (- (/ 1 (pow y 2)))
4.156 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
4.156 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
4.156 * [taylor]: Taking taylor expansion of (pow y 2) in y
4.156 * [taylor]: Taking taylor expansion of y in y
4.156 * [backup-simplify]: Simplify 0 into 0
4.156 * [backup-simplify]: Simplify 1 into 1
4.156 * [backup-simplify]: Simplify (* 1 1) into 1
4.156 * [backup-simplify]: Simplify (/ 1 1) into 1
4.157 * [backup-simplify]: Simplify (- 1) into -1
4.157 * [backup-simplify]: Simplify -1 into -1
4.157 * [backup-simplify]: Simplify 1 into 1
4.157 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
4.158 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
4.158 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
4.159 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))))) into 0
4.159 * [backup-simplify]: Simplify (- 0) into 0
4.160 * [backup-simplify]: Simplify (+ 0 0) into 0
4.160 * [taylor]: Taking taylor expansion of 0 in y
4.160 * [backup-simplify]: Simplify 0 into 0
4.160 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
4.161 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
4.161 * [backup-simplify]: Simplify (- 0) into 0
4.161 * [backup-simplify]: Simplify 0 into 0
4.161 * [backup-simplify]: Simplify 0 into 0
4.161 * [backup-simplify]: Simplify 0 into 0
4.163 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
4.163 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
4.164 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
4.164 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))) (* 0 (/ 0 (pow y 2))))) into 0
4.165 * [backup-simplify]: Simplify (- 0) into 0
4.165 * [backup-simplify]: Simplify (+ 0 0) into 0
4.165 * [taylor]: Taking taylor expansion of 0 in y
4.165 * [backup-simplify]: Simplify 0 into 0
4.166 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
4.167 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
4.167 * [backup-simplify]: Simplify (- 0) into 0
4.167 * [backup-simplify]: Simplify 0 into 0
4.167 * [backup-simplify]: Simplify 0 into 0
4.167 * [backup-simplify]: Simplify 0 into 0
4.168 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 x))) 2)) (* -1 (pow (* (/ 1 (/ 1 y)) 1) 2))) into (- (pow x 2) (pow y 2))
4.168 * [backup-simplify]: Simplify (- (* (/ 1 (- x)) (/ 1 (- x))) (* (/ 1 (- y)) (/ 1 (- y)))) into (- (/ 1 (pow x 2)) (/ 1 (pow y 2)))
4.168 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
4.168 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
4.168 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
4.168 * [taylor]: Taking taylor expansion of (pow x 2) in y
4.168 * [taylor]: Taking taylor expansion of x in y
4.168 * [backup-simplify]: Simplify x into x
4.168 * [backup-simplify]: Simplify (* x x) into (pow x 2)
4.169 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
4.169 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
4.169 * [taylor]: Taking taylor expansion of (pow y 2) in y
4.169 * [taylor]: Taking taylor expansion of y in y
4.169 * [backup-simplify]: Simplify 0 into 0
4.169 * [backup-simplify]: Simplify 1 into 1
4.169 * [backup-simplify]: Simplify (* 1 1) into 1
4.170 * [backup-simplify]: Simplify (/ 1 1) into 1
4.170 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
4.170 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
4.170 * [taylor]: Taking taylor expansion of (pow x 2) in x
4.170 * [taylor]: Taking taylor expansion of x in x
4.170 * [backup-simplify]: Simplify 0 into 0
4.170 * [backup-simplify]: Simplify 1 into 1
4.170 * [backup-simplify]: Simplify (* 1 1) into 1
4.170 * [backup-simplify]: Simplify (/ 1 1) into 1
4.170 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
4.170 * [taylor]: Taking taylor expansion of (pow y 2) in x
4.171 * [taylor]: Taking taylor expansion of y in x
4.171 * [backup-simplify]: Simplify y into y
4.171 * [backup-simplify]: Simplify (* y y) into (pow y 2)
4.171 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
4.171 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
4.171 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
4.171 * [taylor]: Taking taylor expansion of (pow x 2) in x
4.171 * [taylor]: Taking taylor expansion of x in x
4.171 * [backup-simplify]: Simplify 0 into 0
4.171 * [backup-simplify]: Simplify 1 into 1
4.171 * [backup-simplify]: Simplify (* 1 1) into 1
4.172 * [backup-simplify]: Simplify (/ 1 1) into 1
4.172 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
4.172 * [taylor]: Taking taylor expansion of (pow y 2) in x
4.172 * [taylor]: Taking taylor expansion of y in x
4.172 * [backup-simplify]: Simplify y into y
4.172 * [backup-simplify]: Simplify (* y y) into (pow y 2)
4.172 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
4.172 * [backup-simplify]: Simplify (+ 1 0) into 1
4.172 * [taylor]: Taking taylor expansion of 1 in y
4.173 * [backup-simplify]: Simplify 1 into 1
4.173 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
4.174 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
4.174 * [backup-simplify]: Simplify (+ 0 0) into 0
4.174 * [taylor]: Taking taylor expansion of 0 in y
4.174 * [backup-simplify]: Simplify 0 into 0
4.175 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
4.176 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
4.176 * [backup-simplify]: Simplify (- (/ 1 (pow y 2))) into (- (/ 1 (pow y 2)))
4.176 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 2)))) into (- (/ 1 (pow y 2)))
4.176 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
4.177 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
4.177 * [taylor]: Taking taylor expansion of (pow y 2) in y
4.177 * [taylor]: Taking taylor expansion of y in y
4.177 * [backup-simplify]: Simplify 0 into 0
4.177 * [backup-simplify]: Simplify 1 into 1
4.177 * [backup-simplify]: Simplify (* 1 1) into 1
4.177 * [backup-simplify]: Simplify (/ 1 1) into 1
4.178 * [backup-simplify]: Simplify (- 1) into -1
4.178 * [backup-simplify]: Simplify -1 into -1
4.178 * [backup-simplify]: Simplify 1 into 1
4.179 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
4.180 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
4.180 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
4.180 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))))) into 0
4.181 * [backup-simplify]: Simplify (- 0) into 0
4.181 * [backup-simplify]: Simplify (+ 0 0) into 0
4.181 * [taylor]: Taking taylor expansion of 0 in y
4.181 * [backup-simplify]: Simplify 0 into 0
4.182 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
4.182 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
4.183 * [backup-simplify]: Simplify (- 0) into 0
4.183 * [backup-simplify]: Simplify 0 into 0
4.183 * [backup-simplify]: Simplify 0 into 0
4.183 * [backup-simplify]: Simplify 0 into 0
4.184 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
4.185 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
4.185 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
4.186 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))) (* 0 (/ 0 (pow y 2))))) into 0
4.186 * [backup-simplify]: Simplify (- 0) into 0
4.187 * [backup-simplify]: Simplify (+ 0 0) into 0
4.187 * [taylor]: Taking taylor expansion of 0 in y
4.187 * [backup-simplify]: Simplify 0 into 0
4.188 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
4.188 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
4.189 * [backup-simplify]: Simplify (- 0) into 0
4.189 * [backup-simplify]: Simplify 0 into 0
4.189 * [backup-simplify]: Simplify 0 into 0
4.189 * [backup-simplify]: Simplify 0 into 0
4.189 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 (- x)))) 2)) (* -1 (pow (* (/ 1 (/ 1 (- y))) 1) 2))) into (- (pow x 2) (pow y 2))
4.189 * * * [progress]: simplifying candidates
4.190 * [simplify]: Simplifying:
  (fma x x (- (* y y)))
  (fma (- y) y (* y y))
  (expm1 (- (* x x) (* y y)))
  (log1p (- (* x x) (* y y)))
  (- (* y y))
  (/ (exp (* x x)) (exp (* y y)))
  (log (- (* x x) (* y y)))
  (exp (- (* x x) (* y y)))
  (* (cbrt (- (* x x) (* y y))) (cbrt (- (* x x) (* y y))))
  (cbrt (- (* x x) (* y y)))
  (* (* (- (* x x) (* y y)) (- (* x x) (* y y))) (- (* x x) (* y y)))
  (sqrt (- (* x x) (* y y)))
  (sqrt (- (* x x) (* y y)))
  (- (pow (* x x) 3) (pow (* y y) 3))
  (+ (* (* x x) (* x x)) (+ (* (* y y) (* y y)) (* (* x x) (* y y))))
  (- (* y y))
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
  (+ (* x x) (* y y))
  (+ x y)
  (- x y)
  (- (* y y))
  (- (pow x 2) (pow y 2))
  (- (pow x 2) (pow y 2))
  (- (pow x 2) (pow y 2))
4.191 * * [simplify]: Extracting # 0 : cost  0
4.191 * * [simplify]: Extracting # 1 : cost  0
4.191 * * [simplify]: Extracting # 2 : cost  0
4.191 * * [simplify]: Extracting # 3 : cost  0
4.191 * * [simplify]: Extracting # 4 : cost  0
4.191 * * [simplify]: Extracting # 5 : cost  0
4.191 * * [simplify]: iteration  0 :  38  enodes  (cost  214 )
4.207 * * [simplify]: Extracting # 0 : cost  0
4.207 * * [simplify]: Extracting # 1 : cost  0
4.207 * * [simplify]: Extracting # 2 : cost  0
4.207 * * [simplify]: Extracting # 3 : cost  0
4.208 * * [simplify]: iteration  1 :  118  enodes  (cost  207 )
4.268 * * [simplify]: Extracting # 0 : cost  0
4.269 * * [simplify]: Extracting # 1 : cost  0
4.270 * * [simplify]: Extracting # 2 : cost  0
4.270 * * [simplify]: Extracting # 3 : cost  0
4.271 * * [simplify]: Extracting # 4 : cost  0
4.272 * * [simplify]: iteration  2 :  646  enodes  (cost  175 )
4.875 * * [simplify]: Extracting # 0 : cost  0
4.879 * * [simplify]: Extracting # 1 : cost  0
4.885 * * [simplify]: Extracting # 2 : cost  0
4.892 * * [simplify]: Extracting # 3 : cost  0
4.898 * * [simplify]: Extracting # 4 : cost  0
4.904 * * [simplify]: iteration done:  5000  enodes  (cost  175 )
4.904 * [simplify]: Simplified to:
  (- (* x x) (* y y))
  (* y (+ (- y) y))
  (expm1 (- (* x x) (* y y)))
  (log1p (- (* x x) (* y y)))
  (- (* y y))
  (exp (- (* x x) (* y y)))
  (log (- (* x x) (* y y)))
  (exp (- (* x x) (* y y)))
  (* (cbrt (- (* x x) (* y y))) (cbrt (- (* x x) (* y y))))
  (cbrt (- (* x x) (* y y)))
  (pow (fma x x (- (* y y))) 3)
  (sqrt (- (* x x) (* y y)))
  (sqrt (- (* x x) (* y y)))
  (- (pow x 6) (pow y 6))
  (fma (* y y) (fma x x (* y y)) (pow x 4))
  (- (* y y))
  (- (pow x 4) (pow y 4))
  (fma x x (* y y))
  (+ x y)
  (- x y)
  (- (* y y))
  (- (* x x) (* y y))
  (- (* x x) (* y y))
  (- (* x x) (* y y))
4.904 * * * [progress]: adding candidates to table
4.959 * * [progress]: iteration 2 / 4
4.959 * * * [progress]: picking best candidate
4.961 * * * * [pick]: Picked  #<alt (λ (x y) (fma x x (- (* y y))))>
4.961 * * * [progress]: localizing error
4.969 * * * [progress]: generating rewritten candidates
4.969 * * * [progress]: generating series expansions
4.969 * * * [progress]: simplifying candidates
4.969 * [simplify]: Simplifying:
  
4.969 * * [simplify]: Extracting # 0 : cost  0
4.969 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
4.969 * * [simplify]: Extracting # 0 : cost  0
4.969 * * [simplify]: iteration done:  0  enodes  (cost  0 )
4.969 * [simplify]: Simplified to:
  
4.969 * * * [progress]: adding candidates to table
4.969 * [progress]: [Phase 3 of 3] Extracting.
4.972 * [simplify]: Simplifying:
  (fma x x (- (* y y)))
4.972 * * [simplify]: Extracting # 0 : cost  0
4.972 * * [simplify]: Extracting # 1 : cost  0
4.972 * * [simplify]: Extracting # 2 : cost  0
4.972 * * [simplify]: Extracting # 3 : cost  0
4.972 * * [simplify]: Extracting # 4 : cost  0
4.972 * * [simplify]: Extracting # 5 : cost  0
4.972 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
4.973 * * [simplify]: Extracting # 0 : cost  0
4.973 * * [simplify]: Extracting # 1 : cost  0
4.973 * * [simplify]: Extracting # 2 : cost  0
4.973 * * [simplify]: iteration  1 :  8  enodes  (cost  7 )
4.973 * * [simplify]: Extracting # 0 : cost  0
4.973 * * [simplify]: iteration done:  8  enodes  (cost  7 )
4.973 * [simplify]: Simplified to:
  (fma x x (- (* y y)))
6.780 * [regime-testing]: Baseline error score: 0.004250531316414552
6.782 * [regime-testing]: Oracle error score: 0.004250531316414552
6.782 * [regime-testing]: End program error score: 0.004250531316414552