5.519 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.089 * * * [progress]: [2/2] Setting up program.
0.092 * [progress]: [Phase 2 of 3] Improving.
0.092 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (* x x) (* y y))
0.208 * * [simplify]: iteration  0 :  6509  enodes  (cost  7 )
0.209 * [simplify]: Simplified to:
   (- (* x x) (* y y))
0.209 * * [progress]: iteration 1 / 4
0.209 * * * [progress]: picking best candidate
0.215 * * * * [pick]: Picked  #<alt (λ (x y) (- (* x x) (* y y)))>
0.215 * * * [progress]: localizing error
0.220 * * * [progress]: generating rewritten candidates
0.220 * * * * [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 (- (pow x 2) (pow y 2)) in (x y) around 0
0.224 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in y
0.224 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.224 * [taylor]: Taking taylor expansion of x in y
0.224 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.224 * [taylor]: Taking taylor expansion of y in y
0.224 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
0.224 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.224 * [taylor]: Taking taylor expansion of x in x
0.224 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.224 * [taylor]: Taking taylor expansion of y in x
0.224 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
0.224 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.224 * [taylor]: Taking taylor expansion of x in x
0.224 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.224 * [taylor]: Taking taylor expansion of y in x
0.225 * [taylor]: Taking taylor expansion of (neg (pow y 2)) in y
0.225 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.225 * [taylor]: Taking taylor expansion of y in y
0.225 * [taylor]: Taking taylor expansion of 0 in y
0.225 * [taylor]: Taking taylor expansion of 1 in y
0.225 * [taylor]: Taking taylor expansion of 0 in y
0.225 * [taylor]: Taking taylor expansion of 0 in y
0.225 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
0.226 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
0.226 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.226 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.226 * [taylor]: Taking taylor expansion of x in y
0.226 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.226 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.226 * [taylor]: Taking taylor expansion of y in y
0.226 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
0.226 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.226 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.226 * [taylor]: Taking taylor expansion of x in x
0.226 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.226 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.226 * [taylor]: Taking taylor expansion of y in x
0.226 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
0.226 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.226 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.226 * [taylor]: Taking taylor expansion of x in x
0.226 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.226 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.226 * [taylor]: Taking taylor expansion of y in x
0.226 * [taylor]: Taking taylor expansion of 1 in y
0.226 * [taylor]: Taking taylor expansion of 0 in y
0.227 * [taylor]: Taking taylor expansion of (neg (/ 1 (pow y 2))) in y
0.227 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.227 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.227 * [taylor]: Taking taylor expansion of y in y
0.227 * [taylor]: Taking taylor expansion of 0 in y
0.227 * [taylor]: Taking taylor expansion of 0 in y
0.228 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
0.228 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
0.228 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.228 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.228 * [taylor]: Taking taylor expansion of x in y
0.228 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.228 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.228 * [taylor]: Taking taylor expansion of y in y
0.228 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
0.228 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.228 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.228 * [taylor]: Taking taylor expansion of x in x
0.228 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.228 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.228 * [taylor]: Taking taylor expansion of y in x
0.228 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
0.228 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.228 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.228 * [taylor]: Taking taylor expansion of x in x
0.228 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.228 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.228 * [taylor]: Taking taylor expansion of y in x
0.229 * [taylor]: Taking taylor expansion of 1 in y
0.229 * [taylor]: Taking taylor expansion of 0 in y
0.229 * [taylor]: Taking taylor expansion of (neg (/ 1 (pow y 2))) in y
0.229 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.229 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.229 * [taylor]: Taking taylor expansion of y in y
0.229 * [taylor]: Taking taylor expansion of 0 in y
0.230 * [taylor]: Taking taylor expansion of 0 in y
0.230 * * * [progress]: simplifying candidates
0.230 * [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))))
  (neg (* y y))
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
  (+ (* x x) (* y y))
  (+ x y)
  (- x y)
  (- (pow x 2) (pow y 2))
  (- (pow x 2) (pow y 2))
  (- (pow x 2) (pow y 2))
0.289 * * [simplify]: iteration  0 :  4881  enodes  (cost  141 )
0.289 * * [simplify]: iteration  1 :  4881  enodes  (cost  141 )
0.290 * [simplify]: Simplified to:
   (pow (exp (+ x y)) (- x y))
  (log (- (* x x) (* y y)))
  (pow (exp (+ x y)) (- x 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 6) (pow y 6))
  (+ (pow x 4) (+ (pow y 4) (* x (* x (* y y)))))
  (* y (neg y))
  (- (pow x 4) (pow y 4))
  (+ (* x x) (* y y))
  (+ x y)
  (- x y)
  (- (* x x) (* y y))
  (- (* x x) (* y y))
  (- (* x x) (* y y))
0.290 * * * [progress]: adding candidates to table
0.306 * * [progress]: iteration 2 / 4
0.306 * * * [progress]: picking best candidate
0.308 * * * * [pick]: Picked  #<alt (λ (x y) (* (+ x y) (- x y)))>
0.308 * * * [progress]: localizing error
0.313 * * * [progress]: generating rewritten candidates
0.313 * * * [progress]: generating series expansions
0.313 * * * [progress]: simplifying candidates
0.313 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.315 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.315 * [simplify]: Simplified to:
   
0.315 * * * [progress]: adding candidates to table
0.316 * [progress]: [Phase 3 of 3] Extracting.
0.318 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (+ x y) (- x y))
0.319 * * [simplify]: iteration  0 :  17  enodes  (cost  7 )
0.319 * * [simplify]: iteration  1 :  17  enodes  (cost  7 )
0.319 * [simplify]: Simplified to:
   (* (+ x y) (- x y))
0.805 * [regime-testing]: End program error score: 0.0008751093886735842