8.530 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.033 * * * [progress]: [2/2] Setting up program.
0.039 * [progress]: [Phase 2 of 3] Improving.
0.039 * [simplify]: Simplifying:
  (- (* x x) (* y y))
0.039 * * [simplify]: iteration 0: 5 enodes
0.041 * * [simplify]: iteration 1: 11 enodes
0.045 * * [simplify]: iteration 2: 18 enodes
0.051 * * [simplify]: iteration 3: 35 enodes
0.064 * * [simplify]: iteration 4: 66 enodes
0.095 * * [simplify]: iteration 5: 159 enodes
0.150 * * [simplify]: iteration 6: 286 enodes
0.283 * * [simplify]: iteration 7: 519 enodes
0.835 * * [simplify]: iteration 8: 1418 enodes
7.470 * * [simplify]: iteration 9: 4794 enodes
8.623 * * [simplify]: iteration complete: 5000 enodes
8.624 * * [simplify]: Extracting #0: cost 1 inf + 0
8.624 * * [simplify]: Extracting #1: cost 191 inf + 0
8.632 * * [simplify]: Extracting #2: cost 574 inf + 3326
8.667 * * [simplify]: Extracting #3: cost 140 inf + 78086
8.737 * * [simplify]: Extracting #4: cost 3 inf + 107323
8.806 * * [simplify]: Extracting #5: cost 0 inf + 106470
8.867 * [simplify]: Simplified to:
  (- (* x x) (* y y))
8.869 * * [progress]: iteration 1 / 4
8.869 * * * [progress]: picking best candidate
8.874 * * * * [pick]: Picked  #<alt (λ (x y) (- (* x x) (* y y)))>
8.874 * * * [progress]: localizing error
8.888 * * * [progress]: generating rewritten candidates
8.888 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
8.902 * * * [progress]: generating series expansions
8.902 * * * * [progress]: [ 1 / 1 ] generating series at (2)
8.902 * [backup-simplify]: Simplify (- (* x x) (* y y)) into (- (pow x 2) (pow y 2))
8.902 * [approximate]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in (x y) around 0
8.902 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in y
8.902 * [taylor]: Taking taylor expansion of (pow x 2) in y
8.902 * [taylor]: Taking taylor expansion of x in y
8.902 * [backup-simplify]: Simplify x into x
8.902 * [taylor]: Taking taylor expansion of (pow y 2) in y
8.902 * [taylor]: Taking taylor expansion of y in y
8.902 * [backup-simplify]: Simplify 0 into 0
8.902 * [backup-simplify]: Simplify 1 into 1
8.902 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
8.902 * [taylor]: Taking taylor expansion of (pow x 2) in x
8.902 * [taylor]: Taking taylor expansion of x in x
8.902 * [backup-simplify]: Simplify 0 into 0
8.902 * [backup-simplify]: Simplify 1 into 1
8.902 * [taylor]: Taking taylor expansion of (pow y 2) in x
8.903 * [taylor]: Taking taylor expansion of y in x
8.903 * [backup-simplify]: Simplify y into y
8.903 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
8.903 * [taylor]: Taking taylor expansion of (pow x 2) in x
8.903 * [taylor]: Taking taylor expansion of x in x
8.903 * [backup-simplify]: Simplify 0 into 0
8.903 * [backup-simplify]: Simplify 1 into 1
8.903 * [taylor]: Taking taylor expansion of (pow y 2) in x
8.903 * [taylor]: Taking taylor expansion of y in x
8.903 * [backup-simplify]: Simplify y into y
8.903 * [backup-simplify]: Simplify (* y y) into (pow y 2)
8.903 * [backup-simplify]: Simplify (- (pow y 2)) into (- (pow y 2))
8.903 * [backup-simplify]: Simplify (+ 0 (- (pow y 2))) into (- (pow y 2))
8.903 * [taylor]: Taking taylor expansion of (- (pow y 2)) in y
8.903 * [taylor]: Taking taylor expansion of (pow y 2) in y
8.903 * [taylor]: Taking taylor expansion of y in y
8.903 * [backup-simplify]: Simplify 0 into 0
8.903 * [backup-simplify]: Simplify 1 into 1
8.903 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
8.904 * [backup-simplify]: Simplify (- 0) into 0
8.904 * [backup-simplify]: Simplify (+ 0 0) into 0
8.904 * [taylor]: Taking taylor expansion of 0 in y
8.904 * [backup-simplify]: Simplify 0 into 0
8.904 * [backup-simplify]: Simplify 0 into 0
8.904 * [backup-simplify]: Simplify (* 1 1) into 1
8.905 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
8.905 * [backup-simplify]: Simplify (- 0) into 0
8.905 * [backup-simplify]: Simplify (+ 1 0) into 1
8.905 * [taylor]: Taking taylor expansion of 1 in y
8.905 * [backup-simplify]: Simplify 1 into 1
8.905 * [backup-simplify]: Simplify 1 into 1
8.905 * [backup-simplify]: Simplify 0 into 0
8.905 * [backup-simplify]: Simplify (* 1 1) into 1
8.906 * [backup-simplify]: Simplify (- 1) into -1
8.906 * [backup-simplify]: Simplify -1 into -1
8.906 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
8.907 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))) into 0
8.907 * [backup-simplify]: Simplify (- 0) into 0
8.907 * [backup-simplify]: Simplify (+ 0 0) into 0
8.907 * [taylor]: Taking taylor expansion of 0 in y
8.907 * [backup-simplify]: Simplify 0 into 0
8.907 * [backup-simplify]: Simplify 0 into 0
8.907 * [backup-simplify]: Simplify 0 into 0
8.907 * [backup-simplify]: Simplify 0 into 0
8.908 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
8.908 * [backup-simplify]: Simplify (- 0) into 0
8.908 * [backup-simplify]: Simplify 0 into 0
8.909 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
8.909 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 y))))) into 0
8.909 * [backup-simplify]: Simplify (- 0) into 0
8.910 * [backup-simplify]: Simplify (+ 0 0) into 0
8.910 * [taylor]: Taking taylor expansion of 0 in y
8.910 * [backup-simplify]: Simplify 0 into 0
8.910 * [backup-simplify]: Simplify 0 into 0
8.910 * [backup-simplify]: Simplify 0 into 0
8.910 * [backup-simplify]: Simplify (+ (* -1 (pow (* y 1) 2)) (* 1 (pow (* 1 x) 2))) into (- (pow x 2) (pow y 2))
8.910 * [backup-simplify]: Simplify (- (* (/ 1 x) (/ 1 x)) (* (/ 1 y) (/ 1 y))) into (- (/ 1 (pow x 2)) (/ 1 (pow y 2)))
8.910 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
8.910 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
8.910 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
8.910 * [taylor]: Taking taylor expansion of (pow x 2) in y
8.910 * [taylor]: Taking taylor expansion of x in y
8.910 * [backup-simplify]: Simplify x into x
8.910 * [backup-simplify]: Simplify (* x x) into (pow x 2)
8.910 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
8.910 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
8.911 * [taylor]: Taking taylor expansion of (pow y 2) in y
8.911 * [taylor]: Taking taylor expansion of y in y
8.911 * [backup-simplify]: Simplify 0 into 0
8.911 * [backup-simplify]: Simplify 1 into 1
8.911 * [backup-simplify]: Simplify (* 1 1) into 1
8.911 * [backup-simplify]: Simplify (/ 1 1) into 1
8.911 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
8.911 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
8.911 * [taylor]: Taking taylor expansion of (pow x 2) in x
8.911 * [taylor]: Taking taylor expansion of x in x
8.911 * [backup-simplify]: Simplify 0 into 0
8.911 * [backup-simplify]: Simplify 1 into 1
8.911 * [backup-simplify]: Simplify (* 1 1) into 1
8.912 * [backup-simplify]: Simplify (/ 1 1) into 1
8.912 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
8.912 * [taylor]: Taking taylor expansion of (pow y 2) in x
8.912 * [taylor]: Taking taylor expansion of y in x
8.912 * [backup-simplify]: Simplify y into y
8.912 * [backup-simplify]: Simplify (* y y) into (pow y 2)
8.912 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
8.912 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
8.912 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
8.912 * [taylor]: Taking taylor expansion of (pow x 2) in x
8.912 * [taylor]: Taking taylor expansion of x in x
8.912 * [backup-simplify]: Simplify 0 into 0
8.912 * [backup-simplify]: Simplify 1 into 1
8.912 * [backup-simplify]: Simplify (* 1 1) into 1
8.912 * [backup-simplify]: Simplify (/ 1 1) into 1
8.912 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
8.912 * [taylor]: Taking taylor expansion of (pow y 2) in x
8.912 * [taylor]: Taking taylor expansion of y in x
8.912 * [backup-simplify]: Simplify y into y
8.913 * [backup-simplify]: Simplify (* y y) into (pow y 2)
8.913 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
8.913 * [backup-simplify]: Simplify (+ 1 0) into 1
8.913 * [taylor]: Taking taylor expansion of 1 in y
8.913 * [backup-simplify]: Simplify 1 into 1
8.913 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
8.914 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
8.914 * [backup-simplify]: Simplify (+ 0 0) into 0
8.914 * [taylor]: Taking taylor expansion of 0 in y
8.914 * [backup-simplify]: Simplify 0 into 0
8.915 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
8.915 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
8.915 * [backup-simplify]: Simplify (- (/ 1 (pow y 2))) into (- (/ 1 (pow y 2)))
8.915 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 2)))) into (- (/ 1 (pow y 2)))
8.915 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
8.915 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
8.915 * [taylor]: Taking taylor expansion of (pow y 2) in y
8.915 * [taylor]: Taking taylor expansion of y in y
8.915 * [backup-simplify]: Simplify 0 into 0
8.915 * [backup-simplify]: Simplify 1 into 1
8.916 * [backup-simplify]: Simplify (* 1 1) into 1
8.916 * [backup-simplify]: Simplify (/ 1 1) into 1
8.916 * [backup-simplify]: Simplify (- 1) into -1
8.916 * [backup-simplify]: Simplify -1 into -1
8.916 * [backup-simplify]: Simplify 1 into 1
8.917 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
8.917 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
8.918 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
8.918 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))))) into 0
8.918 * [backup-simplify]: Simplify (- 0) into 0
8.918 * [backup-simplify]: Simplify (+ 0 0) into 0
8.918 * [taylor]: Taking taylor expansion of 0 in y
8.918 * [backup-simplify]: Simplify 0 into 0
8.919 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
8.919 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
8.919 * [backup-simplify]: Simplify (- 0) into 0
8.919 * [backup-simplify]: Simplify 0 into 0
8.919 * [backup-simplify]: Simplify 0 into 0
8.919 * [backup-simplify]: Simplify 0 into 0
8.920 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
8.921 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
8.921 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
8.921 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))) (* 0 (/ 0 (pow y 2))))) into 0
8.921 * [backup-simplify]: Simplify (- 0) into 0
8.922 * [backup-simplify]: Simplify (+ 0 0) into 0
8.922 * [taylor]: Taking taylor expansion of 0 in y
8.922 * [backup-simplify]: Simplify 0 into 0
8.922 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
8.923 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
8.923 * [backup-simplify]: Simplify (- 0) into 0
8.923 * [backup-simplify]: Simplify 0 into 0
8.923 * [backup-simplify]: Simplify 0 into 0
8.923 * [backup-simplify]: Simplify 0 into 0
8.923 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 x))) 2)) (* -1 (pow (* (/ 1 (/ 1 y)) 1) 2))) into (- (pow x 2) (pow y 2))
8.924 * [backup-simplify]: Simplify (- (* (/ 1 (- x)) (/ 1 (- x))) (* (/ 1 (- y)) (/ 1 (- y)))) into (- (/ 1 (pow x 2)) (/ 1 (pow y 2)))
8.924 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
8.924 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
8.924 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
8.924 * [taylor]: Taking taylor expansion of (pow x 2) in y
8.924 * [taylor]: Taking taylor expansion of x in y
8.924 * [backup-simplify]: Simplify x into x
8.924 * [backup-simplify]: Simplify (* x x) into (pow x 2)
8.924 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
8.924 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
8.924 * [taylor]: Taking taylor expansion of (pow y 2) in y
8.924 * [taylor]: Taking taylor expansion of y in y
8.924 * [backup-simplify]: Simplify 0 into 0
8.924 * [backup-simplify]: Simplify 1 into 1
8.924 * [backup-simplify]: Simplify (* 1 1) into 1
8.924 * [backup-simplify]: Simplify (/ 1 1) into 1
8.924 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
8.924 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
8.924 * [taylor]: Taking taylor expansion of (pow x 2) in x
8.924 * [taylor]: Taking taylor expansion of x in x
8.924 * [backup-simplify]: Simplify 0 into 0
8.924 * [backup-simplify]: Simplify 1 into 1
8.925 * [backup-simplify]: Simplify (* 1 1) into 1
8.925 * [backup-simplify]: Simplify (/ 1 1) into 1
8.925 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
8.925 * [taylor]: Taking taylor expansion of (pow y 2) in x
8.925 * [taylor]: Taking taylor expansion of y in x
8.925 * [backup-simplify]: Simplify y into y
8.925 * [backup-simplify]: Simplify (* y y) into (pow y 2)
8.925 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
8.925 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
8.925 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
8.925 * [taylor]: Taking taylor expansion of (pow x 2) in x
8.925 * [taylor]: Taking taylor expansion of x in x
8.925 * [backup-simplify]: Simplify 0 into 0
8.925 * [backup-simplify]: Simplify 1 into 1
8.925 * [backup-simplify]: Simplify (* 1 1) into 1
8.926 * [backup-simplify]: Simplify (/ 1 1) into 1
8.926 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
8.926 * [taylor]: Taking taylor expansion of (pow y 2) in x
8.926 * [taylor]: Taking taylor expansion of y in x
8.926 * [backup-simplify]: Simplify y into y
8.926 * [backup-simplify]: Simplify (* y y) into (pow y 2)
8.926 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
8.926 * [backup-simplify]: Simplify (+ 1 0) into 1
8.926 * [taylor]: Taking taylor expansion of 1 in y
8.926 * [backup-simplify]: Simplify 1 into 1
8.927 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
8.927 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
8.927 * [backup-simplify]: Simplify (+ 0 0) into 0
8.927 * [taylor]: Taking taylor expansion of 0 in y
8.927 * [backup-simplify]: Simplify 0 into 0
8.928 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
8.928 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
8.929 * [backup-simplify]: Simplify (- (/ 1 (pow y 2))) into (- (/ 1 (pow y 2)))
8.929 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 2)))) into (- (/ 1 (pow y 2)))
8.929 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
8.929 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
8.929 * [taylor]: Taking taylor expansion of (pow y 2) in y
8.929 * [taylor]: Taking taylor expansion of y in y
8.929 * [backup-simplify]: Simplify 0 into 0
8.929 * [backup-simplify]: Simplify 1 into 1
8.929 * [backup-simplify]: Simplify (* 1 1) into 1
8.929 * [backup-simplify]: Simplify (/ 1 1) into 1
8.930 * [backup-simplify]: Simplify (- 1) into -1
8.930 * [backup-simplify]: Simplify -1 into -1
8.930 * [backup-simplify]: Simplify 1 into 1
8.930 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
8.931 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
8.931 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
8.931 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))))) into 0
8.931 * [backup-simplify]: Simplify (- 0) into 0
8.931 * [backup-simplify]: Simplify (+ 0 0) into 0
8.931 * [taylor]: Taking taylor expansion of 0 in y
8.932 * [backup-simplify]: Simplify 0 into 0
8.932 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
8.932 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
8.933 * [backup-simplify]: Simplify (- 0) into 0
8.933 * [backup-simplify]: Simplify 0 into 0
8.933 * [backup-simplify]: Simplify 0 into 0
8.933 * [backup-simplify]: Simplify 0 into 0
8.933 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
8.934 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
8.934 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
8.934 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))) (* 0 (/ 0 (pow y 2))))) into 0
8.935 * [backup-simplify]: Simplify (- 0) into 0
8.935 * [backup-simplify]: Simplify (+ 0 0) into 0
8.935 * [taylor]: Taking taylor expansion of 0 in y
8.935 * [backup-simplify]: Simplify 0 into 0
8.936 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
8.936 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
8.936 * [backup-simplify]: Simplify (- 0) into 0
8.936 * [backup-simplify]: Simplify 0 into 0
8.936 * [backup-simplify]: Simplify 0 into 0
8.936 * [backup-simplify]: Simplify 0 into 0
8.937 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 (- x)))) 2)) (* -1 (pow (* (/ 1 (/ 1 (- y))) 1) 2))) into (- (pow x 2) (pow y 2))
8.937 * * * [progress]: simplifying candidates
8.937 * [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))
8.937 * * [simplify]: iteration 0: 38 enodes
8.959 * * [simplify]: iteration 1: 101 enodes
9.003 * * [simplify]: iteration 2: 298 enodes
9.159 * * [simplify]: iteration 3: 1311 enodes
9.731 * * [simplify]: iteration complete: 5000 enodes
9.731 * * [simplify]: Extracting #0: cost 17 inf + 0
9.732 * * [simplify]: Extracting #1: cost 338 inf + 1
9.741 * * [simplify]: Extracting #2: cost 1282 inf + 10564
9.774 * * [simplify]: Extracting #3: cost 982 inf + 110959
9.828 * * [simplify]: Extracting #4: cost 243 inf + 281921
9.895 * * [simplify]: Extracting #5: cost 43 inf + 339752
9.967 * * [simplify]: Extracting #6: cost 6 inf + 350585
10.050 * * [simplify]: Extracting #7: cost 0 inf + 352343
10.138 * [simplify]: Simplified to:
  (* (+ y x) (- x y))
  0
  (expm1 (* (+ y x) (- x y)))
  (log1p (* (+ y x) (- x y)))
  (- (* y y))
  (exp (* (+ y x) (- x y)))
  (log (* (+ y x) (- x y)))
  (exp (* (+ y x) (- x y)))
  (* (cbrt (* (+ y x) (- x y))) (cbrt (* (+ y x) (- x y))))
  (cbrt (* (+ y x) (- x y)))
  (* (* (* (+ y x) (- x y)) (* (+ y x) (- x y))) (* (+ y x) (- x y)))
  (sqrt (* (+ y x) (- x y)))
  (sqrt (* (+ y x) (- x y)))
  (- (* (* x (* x x)) (* x (* x x))) (* (* (* y y) (* y y)) (* y y)))
  (fma (* x x) (* x x) (* (* y y) (fma x x (* y y))))
  (- (* y y))
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
  (fma x x (* y y))
  (+ y x)
  (- x y)
  (- (* y y))
  (* (+ y x) (- x y))
  (* (+ y x) (- x y))
  (* (+ y x) (- x y))
10.140 * * * [progress]: adding candidates to table
10.231 * * [progress]: iteration 2 / 4
10.231 * * * [progress]: picking best candidate
10.234 * * * * [pick]: Picked  #<alt (λ (x y) (* (+ y x) (- x y)))>
10.234 * * * [progress]: localizing error
10.241 * * * [progress]: generating rewritten candidates
10.241 * * * [progress]: generating series expansions
10.241 * * * [progress]: simplifying candidates
10.241 * [simplify]: Simplifying:
  
10.241 * * [simplify]: iteration 0: 0 enodes
10.241 * * [simplify]: iteration complete: 0 enodes
10.241 * * [simplify]: Extracting #0: cost 0 inf + 0
10.241 * [simplify]: Simplified to:
  
10.241 * * * [progress]: adding candidates to table
10.241 * [progress]: [Phase 3 of 3] Extracting.
10.244 * [simplify]: Simplifying:
  (* (+ y x) (- x y))
10.244 * * [simplify]: iteration 0: 5 enodes
10.245 * * [simplify]: iteration 1: 7 enodes
10.245 * * [simplify]: iteration complete: 7 enodes
10.245 * * [simplify]: Extracting #0: cost 1 inf + 0
10.245 * * [simplify]: Extracting #1: cost 3 inf + 0
10.245 * * [simplify]: Extracting #2: cost 5 inf + 0
10.245 * * [simplify]: Extracting #3: cost 3 inf + 2
10.245 * * [simplify]: Extracting #4: cost 0 inf + 208
10.245 * [simplify]: Simplified to:
  (* (+ x y) (- x y))
11.295 * [regime-testing]: Baseline error score: 0.0012501562695336917
11.306 * [regime-testing]: Oracle error score: 0.0012501562695336917
11.306 * [regime-testing]: End program error score: 0.0012501562695336917