1.284 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.016 * * * [progress]: [2/2] Setting up program.
0.017 * [progress]: [Phase 2 of 3] Improving.
0.018 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (* x x) (* y y))
0.020 * * [simplify]: iteration  0 :  10  enodes  (cost  3 )
0.021 * * [simplify]: iteration  1 :  17  enodes  (cost  3 )
0.022 * * [simplify]: iteration  2 :  32  enodes  (cost  3 )
0.024 * * [simplify]: iteration  3 :  58  enodes  (cost  3 )
0.025 * * [simplify]: iteration  4 :  129  enodes  (cost  3 )
0.028 * * [simplify]: iteration  5 :  207  enodes  (cost  3 )
0.031 * * [simplify]: iteration  6 :  393  enodes  (cost  3 )
0.040 * * [simplify]: iteration  7 :  1794  enodes  (cost  3 )
0.092 * * [simplify]: iteration  8 :  5001  enodes  (cost  3 )
0.093 * [simplify]: Simplified to:
   (- (* x x) (* y y))
0.093 * * [progress]: iteration 1 / 4
0.093 * * * [progress]: picking best candidate
0.094 * * * * [pick]: Picked  #<alt (λ (x y) (- (* x x) (* y y)))>
0.094 * * * [progress]: localizing error
0.098 * * * [progress]: generating rewritten candidates
0.098 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.101 * * * [progress]: generating series expansions
0.101 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.101 * [approximate]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in (x y) around 0
0.101 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in y
0.101 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.101 * [taylor]: Taking taylor expansion of x in y
0.101 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.101 * [taylor]: Taking taylor expansion of y in y
0.101 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
0.101 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.101 * [taylor]: Taking taylor expansion of x in x
0.101 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.101 * [taylor]: Taking taylor expansion of y in x
0.102 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
0.102 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.102 * [taylor]: Taking taylor expansion of x in x
0.102 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.102 * [taylor]: Taking taylor expansion of y in x
0.102 * [taylor]: Taking taylor expansion of (- (pow y 2)) in y
0.102 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.102 * [taylor]: Taking taylor expansion of y in y
0.102 * [taylor]: Taking taylor expansion of 0 in y
0.104 * [taylor]: Taking taylor expansion of 1 in y
0.105 * [taylor]: Taking taylor expansion of 0 in y
0.108 * [taylor]: Taking taylor expansion of 0 in y
0.108 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
0.108 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
0.108 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.108 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.108 * [taylor]: Taking taylor expansion of x in y
0.108 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.108 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.108 * [taylor]: Taking taylor expansion of y in y
0.109 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
0.109 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.109 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.109 * [taylor]: Taking taylor expansion of x in x
0.109 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.109 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.109 * [taylor]: Taking taylor expansion of y in x
0.109 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
0.109 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.109 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.109 * [taylor]: Taking taylor expansion of x in x
0.110 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.110 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.110 * [taylor]: Taking taylor expansion of y in x
0.113 * [taylor]: Taking taylor expansion of 1 in y
0.114 * [taylor]: Taking taylor expansion of 0 in y
0.115 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
0.115 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.115 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.115 * [taylor]: Taking taylor expansion of y in y
0.118 * [taylor]: Taking taylor expansion of 0 in y
0.121 * [taylor]: Taking taylor expansion of 0 in y
0.123 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
0.123 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
0.123 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.123 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.123 * [taylor]: Taking taylor expansion of x in y
0.123 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.123 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.123 * [taylor]: Taking taylor expansion of y in y
0.123 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
0.123 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.123 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.123 * [taylor]: Taking taylor expansion of x in x
0.124 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.124 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.124 * [taylor]: Taking taylor expansion of y in x
0.124 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
0.124 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.124 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.124 * [taylor]: Taking taylor expansion of x in x
0.125 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.125 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.125 * [taylor]: Taking taylor expansion of y in x
0.125 * [taylor]: Taking taylor expansion of 1 in y
0.126 * [taylor]: Taking taylor expansion of 0 in y
0.127 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
0.127 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.127 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.127 * [taylor]: Taking taylor expansion of y in y
0.130 * [taylor]: Taking taylor expansion of 0 in y
0.133 * [taylor]: Taking taylor expansion of 0 in y
0.134 * * * [progress]: simplifying candidates
0.135 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ (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))
0.138 * * [simplify]: iteration  0 :  93  enodes  (cost  83 )
0.140 * * [simplify]: iteration  1 :  375  enodes  (cost  72 )
0.147 * * [simplify]: iteration  2 :  1243  enodes  (cost  72 )
0.173 * * [simplify]: iteration  3 :  5001  enodes  (cost  72 )
0.174 * [simplify]: Simplified to:
   (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 (- (* x x) (* y y)) 3)
  (sqrt (- (* x x) (* y y)))
  (sqrt (- (* x x) (* y y)))
  (- (pow (* x x) 3) (pow (* y y) 3))
  (+ (+ (pow x 4) (* (* x x) (* y y))) (pow y 4))
  (- (* y y))
  (+ (* (- (pow y 3)) y) (pow x 4))
  (+ (* x x) (* y y))
  (+ x y)
  (- x y)
  (- (* y y))
  (- (* x x) (* y y))
  (- (* x x) (* y y))
  (- (* x x) (* y y))
0.174 * * * [progress]: adding candidates to table
0.198 * * [progress]: iteration 2 / 4
0.198 * * * [progress]: picking best candidate
0.199 * * * * [pick]: Picked  #<alt (λ (x y) (* (+ x y) (- x y)))>
0.199 * * * [progress]: localizing error
0.204 * * * [progress]: generating rewritten candidates
0.204 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.224 * * * [progress]: generating series expansions
0.224 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.224 * [approximate]: Taking taylor expansion of (* (+ x y) (- x y)) in (x y) around 0
0.224 * [taylor]: Taking taylor expansion of (* (+ x y) (- x y)) in y
0.224 * [taylor]: Taking taylor expansion of (+ x y) in y
0.224 * [taylor]: Taking taylor expansion of x in y
0.224 * [taylor]: Taking taylor expansion of y in y
0.224 * [taylor]: Taking taylor expansion of (- x y) in y
0.224 * [taylor]: Taking taylor expansion of x in y
0.224 * [taylor]: Taking taylor expansion of y in y
0.224 * [taylor]: Taking taylor expansion of (* (+ x y) (- x y)) in x
0.224 * [taylor]: Taking taylor expansion of (+ x y) in x
0.224 * [taylor]: Taking taylor expansion of x in x
0.224 * [taylor]: Taking taylor expansion of y in x
0.224 * [taylor]: Taking taylor expansion of (- x y) in x
0.224 * [taylor]: Taking taylor expansion of x in x
0.225 * [taylor]: Taking taylor expansion of y in x
0.225 * [taylor]: Taking taylor expansion of (* (+ x y) (- x y)) in x
0.225 * [taylor]: Taking taylor expansion of (+ x y) in x
0.225 * [taylor]: Taking taylor expansion of x in x
0.225 * [taylor]: Taking taylor expansion of y in x
0.225 * [taylor]: Taking taylor expansion of (- x y) in x
0.225 * [taylor]: Taking taylor expansion of x in x
0.225 * [taylor]: Taking taylor expansion of y in x
0.225 * [taylor]: Taking taylor expansion of (* -1 (pow y 2)) in y
0.225 * [taylor]: Taking taylor expansion of -1 in y
0.225 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.225 * [taylor]: Taking taylor expansion of y in y
0.226 * [taylor]: Taking taylor expansion of 0 in y
0.227 * [taylor]: Taking taylor expansion of 1 in y
0.229 * [taylor]: Taking taylor expansion of 0 in y
0.231 * [taylor]: Taking taylor expansion of 0 in y
0.231 * [approximate]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) in (x y) around 0
0.231 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) in y
0.231 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in y
0.231 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.231 * [taylor]: Taking taylor expansion of x in y
0.231 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.231 * [taylor]: Taking taylor expansion of y in y
0.232 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in y
0.232 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.232 * [taylor]: Taking taylor expansion of y in y
0.232 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.232 * [taylor]: Taking taylor expansion of x in y
0.232 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) in x
0.232 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.232 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.232 * [taylor]: Taking taylor expansion of x in x
0.232 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.232 * [taylor]: Taking taylor expansion of y in x
0.232 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.232 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.232 * [taylor]: Taking taylor expansion of y in x
0.232 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.232 * [taylor]: Taking taylor expansion of x in x
0.233 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) in x
0.233 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.233 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.233 * [taylor]: Taking taylor expansion of x in x
0.233 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.233 * [taylor]: Taking taylor expansion of y in x
0.233 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.233 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.233 * [taylor]: Taking taylor expansion of y in x
0.233 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.233 * [taylor]: Taking taylor expansion of x in x
0.234 * [taylor]: Taking taylor expansion of 1 in y
0.235 * [taylor]: Taking taylor expansion of 0 in y
0.238 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
0.238 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.238 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.238 * [taylor]: Taking taylor expansion of y in y
0.241 * [taylor]: Taking taylor expansion of 0 in y
0.245 * [taylor]: Taking taylor expansion of 0 in y
0.246 * [approximate]: Taking taylor expansion of (* -1 (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x)))) in (x y) around 0
0.246 * [taylor]: Taking taylor expansion of (* -1 (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x)))) in y
0.246 * [taylor]: Taking taylor expansion of -1 in y
0.246 * [taylor]: Taking taylor expansion of (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) in y
0.246 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in y
0.246 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.246 * [taylor]: Taking taylor expansion of y in y
0.247 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.247 * [taylor]: Taking taylor expansion of x in y
0.247 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in y
0.247 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.247 * [taylor]: Taking taylor expansion of y in y
0.247 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.247 * [taylor]: Taking taylor expansion of x in y
0.247 * [taylor]: Taking taylor expansion of (* -1 (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x)))) in x
0.247 * [taylor]: Taking taylor expansion of -1 in x
0.247 * [taylor]: Taking taylor expansion of (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) in x
0.247 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.247 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.247 * [taylor]: Taking taylor expansion of y in x
0.247 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.247 * [taylor]: Taking taylor expansion of x in x
0.247 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.247 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.247 * [taylor]: Taking taylor expansion of y in x
0.247 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.247 * [taylor]: Taking taylor expansion of x in x
0.248 * [taylor]: Taking taylor expansion of (* -1 (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x)))) in x
0.248 * [taylor]: Taking taylor expansion of -1 in x
0.248 * [taylor]: Taking taylor expansion of (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) in x
0.248 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.248 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.248 * [taylor]: Taking taylor expansion of y in x
0.248 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.248 * [taylor]: Taking taylor expansion of x in x
0.248 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.248 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.248 * [taylor]: Taking taylor expansion of y in x
0.248 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.248 * [taylor]: Taking taylor expansion of x in x
0.250 * [taylor]: Taking taylor expansion of 1 in y
0.251 * [taylor]: Taking taylor expansion of 0 in y
0.254 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
0.254 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.254 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.254 * [taylor]: Taking taylor expansion of y in y
0.258 * [taylor]: Taking taylor expansion of 0 in y
0.263 * [taylor]: Taking taylor expansion of 0 in y
0.264 * * * [progress]: simplifying candidates
0.265 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (+ x y) (- x y))
  (+ (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)))
  (* (+ (pow x 3) (pow y 3)) (- (pow x 3) (pow y 3)))
  (* (+ (* x x) (- (* y y) (* x y))) (+ (* x x) (+ (* y y) (* x y))))
  (* (+ (pow x 3) (pow y 3)) (- (* x x) (* y y)))
  (* (+ (* x x) (- (* y y) (* x y))) (+ x y))
  (* (- (* x x) (* y y)) (- (pow x 3) (pow y 3)))
  (* (- x y) (+ (* x x) (+ (* y y) (* x y))))
  (* (- (* x x) (* y y)) (- (* x x) (* y y)))
  (* (- x y) (+ x y))
  (* (sqrt (+ x y)) (sqrt (- x y)))
  (* (sqrt (+ x y)) (sqrt (- x y)))
  (* (+ x y) x)
  (* (+ x y) (- y))
  (* (+ x y) x)
  (* (+ x y) (- y))
  (* x (+ x y))
  (* (- y) (+ x y))
  (* x (+ x y))
  (* (- 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)
  (* (cbrt (+ x y)) (- x y))
  (* (sqrt (+ x y)) (- x y))
  (* (+ x y) (- x y))
  (* (+ x y) (- x y))
  (* (+ x y) (- (pow x 3) (pow y 3)))
  (* (+ x y) (- (* x x) (* y y)))
  (* (+ (pow x 3) (pow y 3)) (- x y))
  (* (- (* x x) (* y y)) (- x y))
  (- (pow x 2) (pow y 2))
  (- (pow x 2) (pow y 2))
  (- (pow x 2) (pow y 2))
0.269 * * [simplify]: iteration  0 :  196  enodes  (cost  201 )
0.273 * * [simplify]: iteration  1 :  986  enodes  (cost  187 )
0.294 * * [simplify]: iteration  2 :  5001  enodes  (cost  187 )
0.295 * [simplify]: Simplified to:
   (* (- x y) (+ x y))
  (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)))
  (* (+ (pow x 3) (pow y 3)) (- (pow x 3) (pow y 3)))
  (* (+ (* y (+ y x)) (pow x 2)) (+ (* y (- y x)) (pow x 2)))
  (* (+ (pow x 3) (pow y 3)) (- (* x x) (* y y)))
  (* (+ x y) (+ (* y (- y x)) (pow x 2)))
  (* (- (* x x) (* y y)) (- (pow x 3) (pow y 3)))
  (* (+ (* y (+ y x)) (pow x 2)) (- x y))
  (* (* (+ x y) (- x y)) (* (+ x y) (- x y)))
  (* (- x y) (+ x y))
  (* (sqrt (+ x y)) (sqrt (- x y)))
  (* (sqrt (+ x y)) (sqrt (- x y)))
  (* x (+ x y))
  (* (- y) (+ x y))
  (* x (+ x y))
  (* (- y) (+ x y))
  (* x (+ x y))
  (* (- y) (+ x y))
  (* x (+ x y))
  (* (- 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)
  (* (cbrt (+ x y)) (- x y))
  (* (sqrt (+ x y)) (- x y))
  (* (- x y) (+ x y))
  (* (- x y) (+ x y))
  (* (+ x y) (- (pow x 3) (pow y 3)))
  (* (+ x y) (- (* x x) (* y y)))
  (* (+ (pow x 3) (pow y 3)) (- x y))
  (* (- (* x x) (* y y)) (- x y))
  (* (- x y) (+ x y))
  (* (- x y) (+ x y))
  (* (- x y) (+ x y))
0.295 * * * [progress]: adding candidates to table
0.352 * [progress]: [Phase 3 of 3] Extracting.
0.352 * * [regime]: Finding splitpoints for: (#<alt (λ (x y) (- (* x x) (* y y)))> #<alt (λ (x y) (* (+ x y) (- x y)))>)
0.352 * * * [regime-changes]: Trying 5 branch expressions: ((* y y) (* x x) (- (* x x) (* y y)) y x)
0.352 * * * * [regimes]: Trying to branch on (* y y) from (#<alt (λ (x y) (- (* x x) (* y y)))> #<alt (λ (x y) (* (+ x y) (- x y)))>)
0.364 * * * * [regimes]: Trying to branch on (* x x) from (#<alt (λ (x y) (- (* x x) (* y y)))> #<alt (λ (x y) (* (+ x y) (- x y)))>)
0.373 * * * * [regimes]: Trying to branch on (- (* x x) (* y y)) from (#<alt (λ (x y) (- (* x x) (* y y)))> #<alt (λ (x y) (* (+ x y) (- x y)))>)
0.384 * * * * [regimes]: Trying to branch on y from (#<alt (λ (x y) (- (* x x) (* y y)))> #<alt (λ (x y) (* (+ x y) (- x y)))>)
0.394 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x y) (- (* x x) (* y y)))> #<alt (λ (x y) (* (+ x y) (- x y)))>)
0.406 * * * [regime]: Found split indices: #<option (#s(si 1 255))>
0.406 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (+ x y) (- x y))
0.407 * * [simplify]: iteration  0 :  7  enodes  (cost  3 )
0.407 * * [simplify]: iteration  1 :  7  enodes  (cost  3 )
0.407 * [simplify]: Simplified to:
   (* (+ x y) (- x y))
0.912 * [regime-testing]: Baseline error score: 0.0016252031503937992
0.913 * [regime-testing]: Oracle error score: 0.00025003125390673836
0.914 * [regime-testing]: End program error score: 0.0016252031503937992