8.638 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.037 * * * [progress]: [2/2] Setting up program.
0.043 * [progress]: [Phase 2 of 3] Improving.
0.044 * [simplify]: Simplifying:
  (- (* x x) (* y y))
0.044 * * [simplify]: iteration 0: 5 enodes
0.046 * * [simplify]: iteration 1: 10 enodes
0.050 * * [simplify]: iteration 2: 17 enodes
0.069 * * [simplify]: iteration 3: 32 enodes
0.083 * * [simplify]: iteration 4: 57 enodes
0.117 * * [simplify]: iteration 5: 128 enodes
0.183 * * [simplify]: iteration 6: 201 enodes
0.331 * * [simplify]: iteration 7: 367 enodes
0.985 * * [simplify]: iteration 8: 1108 enodes
7.962 * * [simplify]: iteration 9: 4271 enodes
18.397 * * [simplify]: iteration complete: 5001 enodes
18.397 * * [simplify]: Extracting #0: cost 1 inf + 0
18.397 * * [simplify]: Extracting #1: cost 188 inf + 0
18.424 * * [simplify]: Extracting #2: cost 936 inf + 84
18.462 * * [simplify]: Extracting #3: cost 668 inf + 32425
18.570 * * [simplify]: Extracting #4: cost 132 inf + 127239
18.825 * * [simplify]: Extracting #5: cost 1 inf + 160508
18.975 * * [simplify]: Extracting #6: cost 0 inf + 160712
19.056 * [simplify]: Simplified to:
  (* (+ x y) (- x y))
19.057 * * [progress]: iteration 1 / 4
19.057 * * * [progress]: picking best candidate
19.064 * * * * [pick]: Picked  #<alt (λ (x y) (- (* x x) (* y y)))>
19.064 * * * [progress]: localizing error
19.079 * * * [progress]: generating rewritten candidates
19.079 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
19.097 * * * [progress]: generating series expansions
19.097 * * * * [progress]: [ 1 / 1 ] generating series at (2)
19.097 * [backup-simplify]: Simplify (- (* x x) (* y y)) into (- (pow x 2) (pow y 2))
19.097 * [approximate]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in (x y) around 0
19.097 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in y
19.097 * [taylor]: Taking taylor expansion of (pow x 2) in y
19.097 * [taylor]: Taking taylor expansion of x in y
19.097 * [backup-simplify]: Simplify x into x
19.097 * [taylor]: Taking taylor expansion of (pow y 2) in y
19.097 * [taylor]: Taking taylor expansion of y in y
19.097 * [backup-simplify]: Simplify 0 into 0
19.097 * [backup-simplify]: Simplify 1 into 1
19.097 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
19.097 * [taylor]: Taking taylor expansion of (pow x 2) in x
19.097 * [taylor]: Taking taylor expansion of x in x
19.098 * [backup-simplify]: Simplify 0 into 0
19.098 * [backup-simplify]: Simplify 1 into 1
19.098 * [taylor]: Taking taylor expansion of (pow y 2) in x
19.098 * [taylor]: Taking taylor expansion of y in x
19.098 * [backup-simplify]: Simplify y into y
19.098 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
19.098 * [taylor]: Taking taylor expansion of (pow x 2) in x
19.098 * [taylor]: Taking taylor expansion of x in x
19.098 * [backup-simplify]: Simplify 0 into 0
19.098 * [backup-simplify]: Simplify 1 into 1
19.098 * [taylor]: Taking taylor expansion of (pow y 2) in x
19.098 * [taylor]: Taking taylor expansion of y in x
19.098 * [backup-simplify]: Simplify y into y
19.098 * [backup-simplify]: Simplify (* y y) into (pow y 2)
19.098 * [backup-simplify]: Simplify (- (pow y 2)) into (- (pow y 2))
19.098 * [backup-simplify]: Simplify (+ 0 (- (pow y 2))) into (- (pow y 2))
19.098 * [taylor]: Taking taylor expansion of (- (pow y 2)) in y
19.098 * [taylor]: Taking taylor expansion of (pow y 2) in y
19.098 * [taylor]: Taking taylor expansion of y in y
19.098 * [backup-simplify]: Simplify 0 into 0
19.098 * [backup-simplify]: Simplify 1 into 1
19.099 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
19.099 * [backup-simplify]: Simplify (- 0) into 0
19.100 * [backup-simplify]: Simplify (+ 0 0) into 0
19.100 * [taylor]: Taking taylor expansion of 0 in y
19.100 * [backup-simplify]: Simplify 0 into 0
19.100 * [backup-simplify]: Simplify 0 into 0
19.100 * [backup-simplify]: Simplify (* 1 1) into 1
19.101 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
19.101 * [backup-simplify]: Simplify (- 0) into 0
19.102 * [backup-simplify]: Simplify (+ 1 0) into 1
19.102 * [taylor]: Taking taylor expansion of 1 in y
19.102 * [backup-simplify]: Simplify 1 into 1
19.102 * [backup-simplify]: Simplify 1 into 1
19.102 * [backup-simplify]: Simplify 0 into 0
19.103 * [backup-simplify]: Simplify (* 1 1) into 1
19.103 * [backup-simplify]: Simplify (- 1) into -1
19.103 * [backup-simplify]: Simplify -1 into -1
19.104 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
19.104 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))) into 0
19.105 * [backup-simplify]: Simplify (- 0) into 0
19.105 * [backup-simplify]: Simplify (+ 0 0) into 0
19.105 * [taylor]: Taking taylor expansion of 0 in y
19.105 * [backup-simplify]: Simplify 0 into 0
19.105 * [backup-simplify]: Simplify 0 into 0
19.105 * [backup-simplify]: Simplify 0 into 0
19.105 * [backup-simplify]: Simplify 0 into 0
19.106 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
19.106 * [backup-simplify]: Simplify (- 0) into 0
19.106 * [backup-simplify]: Simplify 0 into 0
19.106 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
19.108 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 y))))) into 0
19.108 * [backup-simplify]: Simplify (- 0) into 0
19.109 * [backup-simplify]: Simplify (+ 0 0) into 0
19.109 * [taylor]: Taking taylor expansion of 0 in y
19.109 * [backup-simplify]: Simplify 0 into 0
19.109 * [backup-simplify]: Simplify 0 into 0
19.109 * [backup-simplify]: Simplify 0 into 0
19.109 * [backup-simplify]: Simplify (+ (* -1 (pow (* y 1) 2)) (* 1 (pow (* 1 x) 2))) into (- (pow x 2) (pow y 2))
19.110 * [backup-simplify]: Simplify (- (* (/ 1 x) (/ 1 x)) (* (/ 1 y) (/ 1 y))) into (- (/ 1 (pow x 2)) (/ 1 (pow y 2)))
19.110 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
19.110 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
19.110 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
19.110 * [taylor]: Taking taylor expansion of (pow x 2) in y
19.110 * [taylor]: Taking taylor expansion of x in y
19.110 * [backup-simplify]: Simplify x into x
19.110 * [backup-simplify]: Simplify (* x x) into (pow x 2)
19.110 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
19.110 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
19.110 * [taylor]: Taking taylor expansion of (pow y 2) in y
19.110 * [taylor]: Taking taylor expansion of y in y
19.110 * [backup-simplify]: Simplify 0 into 0
19.110 * [backup-simplify]: Simplify 1 into 1
19.111 * [backup-simplify]: Simplify (* 1 1) into 1
19.111 * [backup-simplify]: Simplify (/ 1 1) into 1
19.111 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
19.111 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
19.111 * [taylor]: Taking taylor expansion of (pow x 2) in x
19.111 * [taylor]: Taking taylor expansion of x in x
19.111 * [backup-simplify]: Simplify 0 into 0
19.111 * [backup-simplify]: Simplify 1 into 1
19.111 * [backup-simplify]: Simplify (* 1 1) into 1
19.112 * [backup-simplify]: Simplify (/ 1 1) into 1
19.112 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
19.112 * [taylor]: Taking taylor expansion of (pow y 2) in x
19.112 * [taylor]: Taking taylor expansion of y in x
19.112 * [backup-simplify]: Simplify y into y
19.112 * [backup-simplify]: Simplify (* y y) into (pow y 2)
19.112 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
19.112 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
19.112 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
19.113 * [taylor]: Taking taylor expansion of (pow x 2) in x
19.113 * [taylor]: Taking taylor expansion of x in x
19.113 * [backup-simplify]: Simplify 0 into 0
19.113 * [backup-simplify]: Simplify 1 into 1
19.113 * [backup-simplify]: Simplify (* 1 1) into 1
19.113 * [backup-simplify]: Simplify (/ 1 1) into 1
19.113 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
19.113 * [taylor]: Taking taylor expansion of (pow y 2) in x
19.113 * [taylor]: Taking taylor expansion of y in x
19.113 * [backup-simplify]: Simplify y into y
19.114 * [backup-simplify]: Simplify (* y y) into (pow y 2)
19.114 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
19.114 * [backup-simplify]: Simplify (+ 1 0) into 1
19.114 * [taylor]: Taking taylor expansion of 1 in y
19.114 * [backup-simplify]: Simplify 1 into 1
19.114 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
19.115 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
19.115 * [backup-simplify]: Simplify (+ 0 0) into 0
19.115 * [taylor]: Taking taylor expansion of 0 in y
19.115 * [backup-simplify]: Simplify 0 into 0
19.116 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
19.117 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
19.117 * [backup-simplify]: Simplify (- (/ 1 (pow y 2))) into (- (/ 1 (pow y 2)))
19.117 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 2)))) into (- (/ 1 (pow y 2)))
19.117 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
19.117 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
19.117 * [taylor]: Taking taylor expansion of (pow y 2) in y
19.117 * [taylor]: Taking taylor expansion of y in y
19.117 * [backup-simplify]: Simplify 0 into 0
19.117 * [backup-simplify]: Simplify 1 into 1
19.117 * [backup-simplify]: Simplify (* 1 1) into 1
19.118 * [backup-simplify]: Simplify (/ 1 1) into 1
19.118 * [backup-simplify]: Simplify (- 1) into -1
19.118 * [backup-simplify]: Simplify -1 into -1
19.118 * [backup-simplify]: Simplify 1 into 1
19.119 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
19.119 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
19.120 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
19.120 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))))) into 0
19.120 * [backup-simplify]: Simplify (- 0) into 0
19.121 * [backup-simplify]: Simplify (+ 0 0) into 0
19.121 * [taylor]: Taking taylor expansion of 0 in y
19.121 * [backup-simplify]: Simplify 0 into 0
19.152 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
19.153 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
19.153 * [backup-simplify]: Simplify (- 0) into 0
19.153 * [backup-simplify]: Simplify 0 into 0
19.153 * [backup-simplify]: Simplify 0 into 0
19.153 * [backup-simplify]: Simplify 0 into 0
19.154 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
19.164 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
19.165 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
19.165 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))) (* 0 (/ 0 (pow y 2))))) into 0
19.166 * [backup-simplify]: Simplify (- 0) into 0
19.166 * [backup-simplify]: Simplify (+ 0 0) into 0
19.166 * [taylor]: Taking taylor expansion of 0 in y
19.166 * [backup-simplify]: Simplify 0 into 0
19.167 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
19.168 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
19.169 * [backup-simplify]: Simplify (- 0) into 0
19.169 * [backup-simplify]: Simplify 0 into 0
19.169 * [backup-simplify]: Simplify 0 into 0
19.169 * [backup-simplify]: Simplify 0 into 0
19.169 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 x))) 2)) (* -1 (pow (* (/ 1 (/ 1 y)) 1) 2))) into (- (pow x 2) (pow y 2))
19.170 * [backup-simplify]: Simplify (- (* (/ 1 (- x)) (/ 1 (- x))) (* (/ 1 (- y)) (/ 1 (- y)))) into (- (/ 1 (pow x 2)) (/ 1 (pow y 2)))
19.170 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
19.170 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
19.170 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
19.170 * [taylor]: Taking taylor expansion of (pow x 2) in y
19.170 * [taylor]: Taking taylor expansion of x in y
19.170 * [backup-simplify]: Simplify x into x
19.170 * [backup-simplify]: Simplify (* x x) into (pow x 2)
19.170 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
19.170 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
19.170 * [taylor]: Taking taylor expansion of (pow y 2) in y
19.170 * [taylor]: Taking taylor expansion of y in y
19.170 * [backup-simplify]: Simplify 0 into 0
19.170 * [backup-simplify]: Simplify 1 into 1
19.171 * [backup-simplify]: Simplify (* 1 1) into 1
19.171 * [backup-simplify]: Simplify (/ 1 1) into 1
19.171 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
19.171 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
19.171 * [taylor]: Taking taylor expansion of (pow x 2) in x
19.171 * [taylor]: Taking taylor expansion of x in x
19.171 * [backup-simplify]: Simplify 0 into 0
19.171 * [backup-simplify]: Simplify 1 into 1
19.172 * [backup-simplify]: Simplify (* 1 1) into 1
19.172 * [backup-simplify]: Simplify (/ 1 1) into 1
19.172 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
19.172 * [taylor]: Taking taylor expansion of (pow y 2) in x
19.172 * [taylor]: Taking taylor expansion of y in x
19.172 * [backup-simplify]: Simplify y into y
19.172 * [backup-simplify]: Simplify (* y y) into (pow y 2)
19.172 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
19.173 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
19.173 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
19.173 * [taylor]: Taking taylor expansion of (pow x 2) in x
19.173 * [taylor]: Taking taylor expansion of x in x
19.173 * [backup-simplify]: Simplify 0 into 0
19.173 * [backup-simplify]: Simplify 1 into 1
19.173 * [backup-simplify]: Simplify (* 1 1) into 1
19.173 * [backup-simplify]: Simplify (/ 1 1) into 1
19.173 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
19.173 * [taylor]: Taking taylor expansion of (pow y 2) in x
19.174 * [taylor]: Taking taylor expansion of y in x
19.174 * [backup-simplify]: Simplify y into y
19.174 * [backup-simplify]: Simplify (* y y) into (pow y 2)
19.174 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
19.174 * [backup-simplify]: Simplify (+ 1 0) into 1
19.174 * [taylor]: Taking taylor expansion of 1 in y
19.174 * [backup-simplify]: Simplify 1 into 1
19.175 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
19.245 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
19.247 * [backup-simplify]: Simplify (+ 0 0) into 0
19.247 * [taylor]: Taking taylor expansion of 0 in y
19.252 * [backup-simplify]: Simplify 0 into 0
19.253 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
19.254 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
19.257 * [backup-simplify]: Simplify (- (/ 1 (pow y 2))) into (- (/ 1 (pow y 2)))
19.258 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 2)))) into (- (/ 1 (pow y 2)))
19.258 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
19.258 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
19.258 * [taylor]: Taking taylor expansion of (pow y 2) in y
19.258 * [taylor]: Taking taylor expansion of y in y
19.258 * [backup-simplify]: Simplify 0 into 0
19.258 * [backup-simplify]: Simplify 1 into 1
19.259 * [backup-simplify]: Simplify (* 1 1) into 1
19.259 * [backup-simplify]: Simplify (/ 1 1) into 1
19.259 * [backup-simplify]: Simplify (- 1) into -1
19.259 * [backup-simplify]: Simplify -1 into -1
19.259 * [backup-simplify]: Simplify 1 into 1
19.263 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
19.264 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
19.264 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
19.264 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))))) into 0
19.265 * [backup-simplify]: Simplify (- 0) into 0
19.265 * [backup-simplify]: Simplify (+ 0 0) into 0
19.265 * [taylor]: Taking taylor expansion of 0 in y
19.265 * [backup-simplify]: Simplify 0 into 0
19.266 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
19.266 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
19.267 * [backup-simplify]: Simplify (- 0) into 0
19.267 * [backup-simplify]: Simplify 0 into 0
19.267 * [backup-simplify]: Simplify 0 into 0
19.267 * [backup-simplify]: Simplify 0 into 0
19.275 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
19.276 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
19.277 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
19.278 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))) (* 0 (/ 0 (pow y 2))))) into 0
19.278 * [backup-simplify]: Simplify (- 0) into 0
19.279 * [backup-simplify]: Simplify (+ 0 0) into 0
19.279 * [taylor]: Taking taylor expansion of 0 in y
19.279 * [backup-simplify]: Simplify 0 into 0
19.280 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
19.280 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
19.281 * [backup-simplify]: Simplify (- 0) into 0
19.281 * [backup-simplify]: Simplify 0 into 0
19.281 * [backup-simplify]: Simplify 0 into 0
19.281 * [backup-simplify]: Simplify 0 into 0
19.282 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 (- x)))) 2)) (* -1 (pow (* (/ 1 (/ 1 (- y))) 1) 2))) into (- (pow x 2) (pow y 2))
19.284 * * * [progress]: simplifying candidates
19.284 * [simplify]: Simplifying:
  (/ (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))
19.285 * * [simplify]: iteration 0: 33 enodes
19.319 * * [simplify]: iteration 1: 96 enodes
19.427 * * [simplify]: iteration 2: 286 enodes
20.104 * * [simplify]: iteration 3: 1242 enodes
22.761 * * [simplify]: iteration complete: 5006 enodes
22.761 * * [simplify]: Extracting #0: cost 14 inf + 0
22.762 * * [simplify]: Extracting #1: cost 273 inf + 0
22.869 * * [simplify]: Extracting #2: cost 1425 inf + 497
22.906 * * [simplify]: Extracting #3: cost 1674 inf + 34181
22.981 * * [simplify]: Extracting #4: cost 581 inf + 262868
23.308 * * [simplify]: Extracting #5: cost 48 inf + 402351
23.653 * * [simplify]: Extracting #6: cost 6 inf + 414093
23.974 * * [simplify]: Extracting #7: cost 0 inf + 415851
24.394 * [simplify]: Simplified to:
  (exp (* (+ x y) (- x y)))
  (log (* (+ x y) (- x y)))
  (exp (* (+ 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 (* x x)) (* (* y y) y)) (- (* x (* x x)) (* (* y y) y)))
  (+ (* (* x x) (* x x)) (* (* y y) (+ (* y y) (* x x))))
  (* (- y) y)
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
  (+ (* y y) (* x x))
  (+ y x)
  (- x y)
  (* (- y) y)
  (* (+ x y) (- x y))
  (* (+ x y) (- x y))
  (* (+ x y) (- x y))
24.395 * * * [progress]: adding candidates to table
24.524 * * [progress]: iteration 2 / 4
24.524 * * * [progress]: picking best candidate
24.531 * * * * [pick]: Picked  #<alt (λ (x y) (* (+ x y) (- x y)))>
24.531 * * * [progress]: localizing error
24.547 * * * [progress]: generating rewritten candidates
24.547 * * * [progress]: generating series expansions
24.547 * * * [progress]: simplifying candidates
24.548 * [simplify]: Simplifying:
  
24.548 * * [simplify]: iteration 0: 0 enodes
24.548 * * [simplify]: iteration complete: 0 enodes
24.548 * * [simplify]: Extracting #0: cost 0 inf + 0
24.548 * [simplify]: Simplified to:
  
24.548 * * * [progress]: adding candidates to table
24.549 * [progress]: [Phase 3 of 3] Extracting.
24.556 * [simplify]: Simplifying:
  (* (+ x y) (- x y))
24.556 * * [simplify]: iteration 0: 5 enodes
24.557 * * [simplify]: iteration 1: 7 enodes
24.557 * * [simplify]: iteration complete: 7 enodes
24.557 * * [simplify]: Extracting #0: cost 1 inf + 0
24.557 * * [simplify]: Extracting #1: cost 3 inf + 0
24.557 * * [simplify]: Extracting #2: cost 5 inf + 0
24.558 * * [simplify]: Extracting #3: cost 2 inf + 44
24.558 * * [simplify]: Extracting #4: cost 0 inf + 208
24.558 * [simplify]: Simplified to:
  (* (+ x y) (- x y))
28.442 * [regime-testing]: Baseline error score: 0.0005000625078134767
28.466 * [regime-testing]: Oracle error score: 0.0005000625078134767
28.467 * [regime-testing]: End program error score: 0.0005000625078134767