12.660 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.022 * * * [progress]: [2/2] Setting up program.
0.025 * [progress]: [Phase 2 of 3] Improving.
0.025 * [simplify]: Simplifying:
  (- (* x x) (* y y))
0.025 * * [simplify]: iteration 0: 5 enodes
0.026 * * [simplify]: iteration 1: 10 enodes
0.028 * * [simplify]: iteration 2: 17 enodes
0.030 * * [simplify]: iteration 3: 32 enodes
0.036 * * [simplify]: iteration 4: 57 enodes
0.049 * * [simplify]: iteration 5: 128 enodes
0.083 * * [simplify]: iteration 6: 201 enodes
0.137 * * [simplify]: iteration 7: 367 enodes
0.401 * * [simplify]: iteration 8: 1179 enodes
2.097 * * [simplify]: iteration 9: 4084 enodes
3.748 * * [simplify]: iteration complete: 5002 enodes
3.748 * * [simplify]: Extracting #0: cost 1 inf + 0
3.749 * * [simplify]: Extracting #1: cost 166 inf + 0
3.753 * * [simplify]: Extracting #2: cost 895 inf + 2
3.764 * * [simplify]: Extracting #3: cost 702 inf + 29891
3.806 * * [simplify]: Extracting #4: cost 180 inf + 115226
3.861 * * [simplify]: Extracting #5: cost 4 inf + 156981
3.913 * * [simplify]: Extracting #6: cost 0 inf + 157867
3.968 * [simplify]: Simplified to:
  (* (- x y) (+ y x))
3.969 * * [progress]: iteration 1 / 4
3.969 * * * [progress]: picking best candidate
3.974 * * * * [pick]: Picked  #<alt (λ (x y) (- (* x x) (* y y)))>
3.974 * * * [progress]: localizing error
3.984 * * * [progress]: generating rewritten candidates
3.984 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
3.992 * * * [progress]: generating series expansions
3.992 * * * * [progress]: [ 1 / 1 ] generating series at (2)
3.992 * [backup-simplify]: Simplify (- (* x x) (* y y)) into (- (pow x 2) (pow y 2))
3.992 * [approximate]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in (x y) around 0
3.992 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in y
3.992 * [taylor]: Taking taylor expansion of (pow x 2) in y
3.992 * [taylor]: Taking taylor expansion of x in y
3.992 * [backup-simplify]: Simplify x into x
3.992 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.992 * [taylor]: Taking taylor expansion of y in y
3.992 * [backup-simplify]: Simplify 0 into 0
3.992 * [backup-simplify]: Simplify 1 into 1
3.992 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
3.992 * [taylor]: Taking taylor expansion of (pow x 2) in x
3.992 * [taylor]: Taking taylor expansion of x in x
3.992 * [backup-simplify]: Simplify 0 into 0
3.992 * [backup-simplify]: Simplify 1 into 1
3.992 * [taylor]: Taking taylor expansion of (pow y 2) in x
3.992 * [taylor]: Taking taylor expansion of y in x
3.992 * [backup-simplify]: Simplify y into y
3.992 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
3.992 * [taylor]: Taking taylor expansion of (pow x 2) in x
3.992 * [taylor]: Taking taylor expansion of x in x
3.992 * [backup-simplify]: Simplify 0 into 0
3.992 * [backup-simplify]: Simplify 1 into 1
3.992 * [taylor]: Taking taylor expansion of (pow y 2) in x
3.992 * [taylor]: Taking taylor expansion of y in x
3.992 * [backup-simplify]: Simplify y into y
3.992 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.992 * [backup-simplify]: Simplify (- (pow y 2)) into (- (pow y 2))
3.992 * [backup-simplify]: Simplify (+ 0 (- (pow y 2))) into (- (pow y 2))
3.992 * [taylor]: Taking taylor expansion of (- (pow y 2)) in y
3.993 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.993 * [taylor]: Taking taylor expansion of y in y
3.993 * [backup-simplify]: Simplify 0 into 0
3.993 * [backup-simplify]: Simplify 1 into 1
3.993 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
3.993 * [backup-simplify]: Simplify (- 0) into 0
3.993 * [backup-simplify]: Simplify (+ 0 0) into 0
3.993 * [taylor]: Taking taylor expansion of 0 in y
3.993 * [backup-simplify]: Simplify 0 into 0
3.993 * [backup-simplify]: Simplify 0 into 0
3.994 * [backup-simplify]: Simplify (* 1 1) into 1
3.994 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
3.994 * [backup-simplify]: Simplify (- 0) into 0
3.995 * [backup-simplify]: Simplify (+ 1 0) into 1
3.995 * [taylor]: Taking taylor expansion of 1 in y
3.995 * [backup-simplify]: Simplify 1 into 1
3.995 * [backup-simplify]: Simplify 1 into 1
3.995 * [backup-simplify]: Simplify 0 into 0
3.995 * [backup-simplify]: Simplify (* 1 1) into 1
3.995 * [backup-simplify]: Simplify (- 1) into -1
3.995 * [backup-simplify]: Simplify -1 into -1
3.996 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.996 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))) into 0
3.996 * [backup-simplify]: Simplify (- 0) into 0
3.997 * [backup-simplify]: Simplify (+ 0 0) into 0
3.997 * [taylor]: Taking taylor expansion of 0 in y
3.997 * [backup-simplify]: Simplify 0 into 0
3.997 * [backup-simplify]: Simplify 0 into 0
3.997 * [backup-simplify]: Simplify 0 into 0
3.997 * [backup-simplify]: Simplify 0 into 0
3.997 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.997 * [backup-simplify]: Simplify (- 0) into 0
3.998 * [backup-simplify]: Simplify 0 into 0
3.998 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.999 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 y))))) into 0
3.999 * [backup-simplify]: Simplify (- 0) into 0
4.000 * [backup-simplify]: Simplify (+ 0 0) into 0
4.000 * [taylor]: Taking taylor expansion of 0 in y
4.000 * [backup-simplify]: Simplify 0 into 0
4.000 * [backup-simplify]: Simplify 0 into 0
4.000 * [backup-simplify]: Simplify 0 into 0
4.000 * [backup-simplify]: Simplify (+ (* -1 (pow (* y 1) 2)) (* 1 (pow (* 1 x) 2))) into (- (pow x 2) (pow y 2))
4.002 * [backup-simplify]: Simplify (- (* (/ 1 x) (/ 1 x)) (* (/ 1 y) (/ 1 y))) into (- (/ 1 (pow x 2)) (/ 1 (pow y 2)))
4.002 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
4.002 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
4.002 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
4.002 * [taylor]: Taking taylor expansion of (pow x 2) in y
4.002 * [taylor]: Taking taylor expansion of x in y
4.002 * [backup-simplify]: Simplify x into x
4.002 * [backup-simplify]: Simplify (* x x) into (pow x 2)
4.003 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
4.003 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
4.003 * [taylor]: Taking taylor expansion of (pow y 2) in y
4.003 * [taylor]: Taking taylor expansion of y in y
4.003 * [backup-simplify]: Simplify 0 into 0
4.003 * [backup-simplify]: Simplify 1 into 1
4.003 * [backup-simplify]: Simplify (* 1 1) into 1
4.003 * [backup-simplify]: Simplify (/ 1 1) into 1
4.003 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
4.003 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
4.003 * [taylor]: Taking taylor expansion of (pow x 2) in x
4.003 * [taylor]: Taking taylor expansion of x in x
4.003 * [backup-simplify]: Simplify 0 into 0
4.003 * [backup-simplify]: Simplify 1 into 1
4.004 * [backup-simplify]: Simplify (* 1 1) into 1
4.004 * [backup-simplify]: Simplify (/ 1 1) into 1
4.004 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
4.004 * [taylor]: Taking taylor expansion of (pow y 2) in x
4.004 * [taylor]: Taking taylor expansion of y in x
4.004 * [backup-simplify]: Simplify y into y
4.004 * [backup-simplify]: Simplify (* y y) into (pow y 2)
4.004 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
4.004 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
4.004 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
4.004 * [taylor]: Taking taylor expansion of (pow x 2) in x
4.004 * [taylor]: Taking taylor expansion of x in x
4.004 * [backup-simplify]: Simplify 0 into 0
4.004 * [backup-simplify]: Simplify 1 into 1
4.004 * [backup-simplify]: Simplify (* 1 1) into 1
4.005 * [backup-simplify]: Simplify (/ 1 1) into 1
4.005 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
4.005 * [taylor]: Taking taylor expansion of (pow y 2) in x
4.005 * [taylor]: Taking taylor expansion of y in x
4.005 * [backup-simplify]: Simplify y into y
4.005 * [backup-simplify]: Simplify (* y y) into (pow y 2)
4.005 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
4.005 * [backup-simplify]: Simplify (+ 1 0) into 1
4.005 * [taylor]: Taking taylor expansion of 1 in y
4.005 * [backup-simplify]: Simplify 1 into 1
4.006 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
4.006 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
4.006 * [backup-simplify]: Simplify (+ 0 0) into 0
4.007 * [taylor]: Taking taylor expansion of 0 in y
4.007 * [backup-simplify]: Simplify 0 into 0
4.007 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
4.008 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
4.008 * [backup-simplify]: Simplify (- (/ 1 (pow y 2))) into (- (/ 1 (pow y 2)))
4.008 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 2)))) into (- (/ 1 (pow y 2)))
4.008 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
4.008 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
4.008 * [taylor]: Taking taylor expansion of (pow y 2) in y
4.008 * [taylor]: Taking taylor expansion of y in y
4.008 * [backup-simplify]: Simplify 0 into 0
4.008 * [backup-simplify]: Simplify 1 into 1
4.008 * [backup-simplify]: Simplify (* 1 1) into 1
4.008 * [backup-simplify]: Simplify (/ 1 1) into 1
4.009 * [backup-simplify]: Simplify (- 1) into -1
4.009 * [backup-simplify]: Simplify -1 into -1
4.009 * [backup-simplify]: Simplify 1 into 1
4.009 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
4.010 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
4.010 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
4.010 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))))) into 0
4.010 * [backup-simplify]: Simplify (- 0) into 0
4.011 * [backup-simplify]: Simplify (+ 0 0) into 0
4.011 * [taylor]: Taking taylor expansion of 0 in y
4.011 * [backup-simplify]: Simplify 0 into 0
4.011 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
4.012 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
4.012 * [backup-simplify]: Simplify (- 0) into 0
4.012 * [backup-simplify]: Simplify 0 into 0
4.012 * [backup-simplify]: Simplify 0 into 0
4.012 * [backup-simplify]: Simplify 0 into 0
4.013 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
4.013 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
4.013 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
4.014 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))) (* 0 (/ 0 (pow y 2))))) into 0
4.014 * [backup-simplify]: Simplify (- 0) into 0
4.014 * [backup-simplify]: Simplify (+ 0 0) into 0
4.014 * [taylor]: Taking taylor expansion of 0 in y
4.014 * [backup-simplify]: Simplify 0 into 0
4.015 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
4.015 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
4.016 * [backup-simplify]: Simplify (- 0) into 0
4.016 * [backup-simplify]: Simplify 0 into 0
4.016 * [backup-simplify]: Simplify 0 into 0
4.016 * [backup-simplify]: Simplify 0 into 0
4.016 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 x))) 2)) (* -1 (pow (* (/ 1 (/ 1 y)) 1) 2))) into (- (pow x 2) (pow y 2))
4.016 * [backup-simplify]: Simplify (- (* (/ 1 (- x)) (/ 1 (- x))) (* (/ 1 (- y)) (/ 1 (- y)))) into (- (/ 1 (pow x 2)) (/ 1 (pow y 2)))
4.016 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
4.016 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
4.016 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
4.016 * [taylor]: Taking taylor expansion of (pow x 2) in y
4.016 * [taylor]: Taking taylor expansion of x in y
4.016 * [backup-simplify]: Simplify x into x
4.016 * [backup-simplify]: Simplify (* x x) into (pow x 2)
4.016 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
4.016 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
4.016 * [taylor]: Taking taylor expansion of (pow y 2) in y
4.016 * [taylor]: Taking taylor expansion of y in y
4.016 * [backup-simplify]: Simplify 0 into 0
4.016 * [backup-simplify]: Simplify 1 into 1
4.017 * [backup-simplify]: Simplify (* 1 1) into 1
4.017 * [backup-simplify]: Simplify (/ 1 1) into 1
4.017 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
4.017 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
4.017 * [taylor]: Taking taylor expansion of (pow x 2) in x
4.017 * [taylor]: Taking taylor expansion of x in x
4.017 * [backup-simplify]: Simplify 0 into 0
4.017 * [backup-simplify]: Simplify 1 into 1
4.017 * [backup-simplify]: Simplify (* 1 1) into 1
4.018 * [backup-simplify]: Simplify (/ 1 1) into 1
4.018 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
4.018 * [taylor]: Taking taylor expansion of (pow y 2) in x
4.018 * [taylor]: Taking taylor expansion of y in x
4.018 * [backup-simplify]: Simplify y into y
4.018 * [backup-simplify]: Simplify (* y y) into (pow y 2)
4.018 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
4.018 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
4.018 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
4.018 * [taylor]: Taking taylor expansion of (pow x 2) in x
4.018 * [taylor]: Taking taylor expansion of x in x
4.018 * [backup-simplify]: Simplify 0 into 0
4.018 * [backup-simplify]: Simplify 1 into 1
4.018 * [backup-simplify]: Simplify (* 1 1) into 1
4.018 * [backup-simplify]: Simplify (/ 1 1) into 1
4.018 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
4.018 * [taylor]: Taking taylor expansion of (pow y 2) in x
4.018 * [taylor]: Taking taylor expansion of y in x
4.018 * [backup-simplify]: Simplify y into y
4.018 * [backup-simplify]: Simplify (* y y) into (pow y 2)
4.019 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
4.019 * [backup-simplify]: Simplify (+ 1 0) into 1
4.019 * [taylor]: Taking taylor expansion of 1 in y
4.019 * [backup-simplify]: Simplify 1 into 1
4.019 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
4.020 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
4.020 * [backup-simplify]: Simplify (+ 0 0) into 0
4.020 * [taylor]: Taking taylor expansion of 0 in y
4.020 * [backup-simplify]: Simplify 0 into 0
4.021 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
4.021 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
4.021 * [backup-simplify]: Simplify (- (/ 1 (pow y 2))) into (- (/ 1 (pow y 2)))
4.021 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 2)))) into (- (/ 1 (pow y 2)))
4.021 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
4.021 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
4.021 * [taylor]: Taking taylor expansion of (pow y 2) in y
4.021 * [taylor]: Taking taylor expansion of y in y
4.021 * [backup-simplify]: Simplify 0 into 0
4.021 * [backup-simplify]: Simplify 1 into 1
4.022 * [backup-simplify]: Simplify (* 1 1) into 1
4.022 * [backup-simplify]: Simplify (/ 1 1) into 1
4.022 * [backup-simplify]: Simplify (- 1) into -1
4.022 * [backup-simplify]: Simplify -1 into -1
4.022 * [backup-simplify]: Simplify 1 into 1
4.023 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
4.023 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
4.024 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
4.024 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))))) into 0
4.024 * [backup-simplify]: Simplify (- 0) into 0
4.024 * [backup-simplify]: Simplify (+ 0 0) into 0
4.024 * [taylor]: Taking taylor expansion of 0 in y
4.024 * [backup-simplify]: Simplify 0 into 0
4.025 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
4.025 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
4.025 * [backup-simplify]: Simplify (- 0) into 0
4.025 * [backup-simplify]: Simplify 0 into 0
4.025 * [backup-simplify]: Simplify 0 into 0
4.025 * [backup-simplify]: Simplify 0 into 0
4.026 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
4.027 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
4.027 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
4.028 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))) (* 0 (/ 0 (pow y 2))))) into 0
4.028 * [backup-simplify]: Simplify (- 0) into 0
4.028 * [backup-simplify]: Simplify (+ 0 0) into 0
4.028 * [taylor]: Taking taylor expansion of 0 in y
4.028 * [backup-simplify]: Simplify 0 into 0
4.029 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
4.029 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
4.029 * [backup-simplify]: Simplify (- 0) into 0
4.029 * [backup-simplify]: Simplify 0 into 0
4.029 * [backup-simplify]: Simplify 0 into 0
4.030 * [backup-simplify]: Simplify 0 into 0
4.030 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 (- x)))) 2)) (* -1 (pow (* (/ 1 (/ 1 (- y))) 1) 2))) into (- (pow x 2) (pow y 2))
4.030 * * * [progress]: simplifying candidates
4.030 * [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))
4.030 * * [simplify]: iteration 0: 33 enodes
4.038 * * [simplify]: iteration 1: 96 enodes
4.064 * * [simplify]: iteration 2: 288 enodes
4.199 * * [simplify]: iteration 3: 1264 enodes
4.731 * * [simplify]: iteration complete: 5000 enodes
4.731 * * [simplify]: Extracting #0: cost 14 inf + 0
4.738 * * [simplify]: Extracting #1: cost 315 inf + 0
4.744 * * [simplify]: Extracting #2: cost 1410 inf + 935
4.758 * * [simplify]: Extracting #3: cost 1591 inf + 55438
4.810 * * [simplify]: Extracting #4: cost 448 inf + 300547
4.921 * * [simplify]: Extracting #5: cost 90 inf + 396428
5.023 * * [simplify]: Extracting #6: cost 14 inf + 414697
5.119 * * [simplify]: Extracting #7: cost 0 inf + 419118
5.212 * [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))
5.213 * * * [progress]: adding candidates to table
5.293 * * [progress]: iteration 2 / 4
5.294 * * * [progress]: picking best candidate
5.299 * * * * [pick]: Picked  #<alt (λ (x y) (* (+ x y) (- x y)))>
5.299 * * * [progress]: localizing error
5.311 * * * [progress]: generating rewritten candidates
5.311 * * * [progress]: generating series expansions
5.311 * * * [progress]: simplifying candidates
5.311 * [simplify]: Simplifying:
  
5.311 * * [simplify]: iteration 0: 0 enodes
5.311 * * [simplify]: iteration complete: 0 enodes
5.311 * * [simplify]: Extracting #0: cost 0 inf + 0
5.311 * [simplify]: Simplified to:
  
5.311 * * * [progress]: adding candidates to table
5.312 * [progress]: [Phase 3 of 3] Extracting.
5.317 * [simplify]: Simplifying:
  (* (+ x y) (- x y))
5.317 * * [simplify]: iteration 0: 5 enodes
5.318 * * [simplify]: iteration 1: 7 enodes
5.318 * * [simplify]: iteration complete: 7 enodes
5.318 * * [simplify]: Extracting #0: cost 1 inf + 0
5.318 * * [simplify]: Extracting #1: cost 3 inf + 0
5.318 * * [simplify]: Extracting #2: cost 5 inf + 0
5.319 * * [simplify]: Extracting #3: cost 3 inf + 2
5.319 * * [simplify]: Extracting #4: cost 0 inf + 208
5.319 * [simplify]: Simplified to:
  (* (+ y x) (- x y))
6.569 * [regime-testing]: Baseline error score: 0.0012501562695336917
6.578 * [regime-testing]: Oracle error score: 0.0012501562695336917
6.578 * [regime-testing]: End program error score: 0.0012501562695336917