1.473 * [progress]: [Phase 1 of 3] Setting up.
0.006 * * * [progress]: [1/2] Preparing points
0.136 * * * [progress]: [2/2] Setting up program.
0.139 * [progress]: [Phase 2 of 3] Improving.
0.140 * * * * [progress]: [ 1 / 1 ] simplifiying candidate #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
0.142 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
0.143 * * [simplify]: iteration 1: (6 enodes)
0.148 * * [simplify]: iteration 2: (14 enodes)
0.152 * * [simplify]: iteration 3: (38 enodes)
0.191 * * [simplify]: iteration 4: (51 enodes)
0.197 * * [simplify]: iteration 5: (68 enodes)
0.206 * * [simplify]: iteration 6: (123 enodes)
0.231 * * [simplify]: iteration 7: (277 enodes)
0.305 * * [simplify]: iteration 8: (551 enodes)
0.515 * * [simplify]: iteration 9: (1277 enodes)
3.220 * * [simplify]: Extracting #0: cost 1 inf + 0
3.221 * * [simplify]: Extracting #1: cost 155 inf + 0
3.224 * * [simplify]: Extracting #2: cost 796 inf + 1
3.229 * * [simplify]: Extracting #3: cost 861 inf + 3213
3.252 * * [simplify]: Extracting #4: cost 496 inf + 101312
3.370 * * [simplify]: Extracting #5: cost 26 inf + 239491
3.489 * * [simplify]: Extracting #6: cost 0 inf + 238309
3.586 * * [simplify]: Extracting #7: cost 0 inf + 238189
3.666 * [simplify]: Simplified to:
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
3.673 * * [progress]: iteration 1 / 4
3.673 * * * [progress]: picking best candidate
3.676 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
3.676 * * * [progress]: localizing error
3.690 * * * [progress]: generating rewritten candidates
3.691 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
3.706 * * * [progress]: generating series expansions
3.706 * * * * [progress]: [ 1 / 1 ] generating series at (2)
3.710 * [backup-simplify]: Simplify (- (pow x 4) (pow y 4)) into (- (pow x 4) (pow y 4))
3.710 * [approximate]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in (x y) around 0
3.711 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in y
3.711 * [taylor]: Taking taylor expansion of (pow x 4) in y
3.711 * [taylor]: Taking taylor expansion of x in y
3.711 * [backup-simplify]: Simplify x into x
3.711 * [taylor]: Taking taylor expansion of (pow y 4) in y
3.712 * [taylor]: Taking taylor expansion of y in y
3.712 * [backup-simplify]: Simplify 0 into 0
3.712 * [backup-simplify]: Simplify 1 into 1
3.712 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in x
3.712 * [taylor]: Taking taylor expansion of (pow x 4) in x
3.712 * [taylor]: Taking taylor expansion of x in x
3.712 * [backup-simplify]: Simplify 0 into 0
3.712 * [backup-simplify]: Simplify 1 into 1
3.712 * [taylor]: Taking taylor expansion of (pow y 4) in x
3.712 * [taylor]: Taking taylor expansion of y in x
3.712 * [backup-simplify]: Simplify y into y
3.712 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in x
3.712 * [taylor]: Taking taylor expansion of (pow x 4) in x
3.712 * [taylor]: Taking taylor expansion of x in x
3.712 * [backup-simplify]: Simplify 0 into 0
3.712 * [backup-simplify]: Simplify 1 into 1
3.712 * [taylor]: Taking taylor expansion of (pow y 4) in x
3.712 * [taylor]: Taking taylor expansion of y in x
3.712 * [backup-simplify]: Simplify y into y
3.713 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.713 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
3.713 * [backup-simplify]: Simplify (- (pow y 4)) into (- (pow y 4))
3.713 * [backup-simplify]: Simplify (+ 0 (- (pow y 4))) into (- (pow y 4))
3.713 * [taylor]: Taking taylor expansion of (- (pow y 4)) in y
3.713 * [taylor]: Taking taylor expansion of (pow y 4) in y
3.713 * [taylor]: Taking taylor expansion of y in y
3.713 * [backup-simplify]: Simplify 0 into 0
3.713 * [backup-simplify]: Simplify 1 into 1
3.713 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
3.713 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (* 0 (pow y 2))) into 0
3.714 * [backup-simplify]: Simplify (- 0) into 0
3.714 * [backup-simplify]: Simplify (+ 0 0) into 0
3.714 * [taylor]: Taking taylor expansion of 0 in y
3.714 * [backup-simplify]: Simplify 0 into 0
3.714 * [backup-simplify]: Simplify 0 into 0
3.715 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
3.715 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (* 0 (pow y 2)))) into 0
3.715 * [backup-simplify]: Simplify (- 0) into 0
3.716 * [backup-simplify]: Simplify (+ 0 0) into 0
3.716 * [taylor]: Taking taylor expansion of 0 in y
3.716 * [backup-simplify]: Simplify 0 into 0
3.716 * [backup-simplify]: Simplify 0 into 0
3.716 * [backup-simplify]: Simplify 0 into 0
3.716 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))) into 0
3.717 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (pow y 2))))) into 0
3.717 * [backup-simplify]: Simplify (- 0) into 0
3.718 * [backup-simplify]: Simplify (+ 0 0) into 0
3.718 * [taylor]: Taking taylor expansion of 0 in y
3.718 * [backup-simplify]: Simplify 0 into 0
3.718 * [backup-simplify]: Simplify 0 into 0
3.718 * [backup-simplify]: Simplify 0 into 0
3.718 * [backup-simplify]: Simplify 0 into 0
3.718 * [backup-simplify]: Simplify 0 into 0
3.718 * [backup-simplify]: Simplify (- (pow (/ 1 x) 4) (pow (/ 1 y) 4)) into (- (/ 1 (pow x 4)) (/ 1 (pow y 4)))
3.718 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in (x y) around 0
3.718 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in y
3.718 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
3.718 * [taylor]: Taking taylor expansion of (pow x 4) in y
3.718 * [taylor]: Taking taylor expansion of x in y
3.718 * [backup-simplify]: Simplify x into x
3.718 * [backup-simplify]: Simplify (* x x) into (pow x 2)
3.718 * [backup-simplify]: Simplify (* (pow x 2) (pow x 2)) into (pow x 4)
3.718 * [backup-simplify]: Simplify (/ 1 (pow x 4)) into (/ 1 (pow x 4))
3.718 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
3.718 * [taylor]: Taking taylor expansion of (pow y 4) in y
3.718 * [taylor]: Taking taylor expansion of y in y
3.718 * [backup-simplify]: Simplify 0 into 0
3.718 * [backup-simplify]: Simplify 1 into 1
3.719 * [backup-simplify]: Simplify (* 1 1) into 1
3.719 * [backup-simplify]: Simplify (* 1 1) into 1
3.719 * [backup-simplify]: Simplify (/ 1 1) into 1
3.719 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
3.719 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
3.719 * [taylor]: Taking taylor expansion of (pow x 4) in x
3.719 * [taylor]: Taking taylor expansion of x in x
3.719 * [backup-simplify]: Simplify 0 into 0
3.719 * [backup-simplify]: Simplify 1 into 1
3.720 * [backup-simplify]: Simplify (* 1 1) into 1
3.720 * [backup-simplify]: Simplify (* 1 1) into 1
3.720 * [backup-simplify]: Simplify (/ 1 1) into 1
3.720 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
3.720 * [taylor]: Taking taylor expansion of (pow y 4) in x
3.720 * [taylor]: Taking taylor expansion of y in x
3.720 * [backup-simplify]: Simplify y into y
3.720 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.721 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
3.721 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
3.721 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
3.721 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
3.721 * [taylor]: Taking taylor expansion of (pow x 4) in x
3.721 * [taylor]: Taking taylor expansion of x in x
3.721 * [backup-simplify]: Simplify 0 into 0
3.721 * [backup-simplify]: Simplify 1 into 1
3.721 * [backup-simplify]: Simplify (* 1 1) into 1
3.721 * [backup-simplify]: Simplify (* 1 1) into 1
3.721 * [backup-simplify]: Simplify (/ 1 1) into 1
3.721 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
3.721 * [taylor]: Taking taylor expansion of (pow y 4) in x
3.721 * [taylor]: Taking taylor expansion of y in x
3.721 * [backup-simplify]: Simplify y into y
3.722 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.722 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
3.722 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
3.722 * [backup-simplify]: Simplify (+ 1 0) into 1
3.722 * [taylor]: Taking taylor expansion of 1 in y
3.722 * [backup-simplify]: Simplify 1 into 1
3.723 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.723 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.723 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.724 * [backup-simplify]: Simplify (+ 0 0) into 0
3.724 * [taylor]: Taking taylor expansion of 0 in y
3.724 * [backup-simplify]: Simplify 0 into 0
3.724 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.725 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.725 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.726 * [backup-simplify]: Simplify (+ 0 0) into 0
3.726 * [taylor]: Taking taylor expansion of 0 in y
3.726 * [backup-simplify]: Simplify 0 into 0
3.726 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.727 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.728 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.728 * [backup-simplify]: Simplify (+ 0 0) into 0
3.728 * [taylor]: Taking taylor expansion of 0 in y
3.728 * [backup-simplify]: Simplify 0 into 0
3.729 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.729 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.730 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.730 * [backup-simplify]: Simplify (- (/ 1 (pow y 4))) into (- (/ 1 (pow y 4)))
3.730 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 4)))) into (- (/ 1 (pow y 4)))
3.730 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 4))) in y
3.730 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
3.730 * [taylor]: Taking taylor expansion of (pow y 4) in y
3.730 * [taylor]: Taking taylor expansion of y in y
3.730 * [backup-simplify]: Simplify 0 into 0
3.730 * [backup-simplify]: Simplify 1 into 1
3.731 * [backup-simplify]: Simplify (* 1 1) into 1
3.731 * [backup-simplify]: Simplify (* 1 1) into 1
3.731 * [backup-simplify]: Simplify (/ 1 1) into 1
3.731 * [backup-simplify]: Simplify (- 1) into -1
3.731 * [backup-simplify]: Simplify -1 into -1
3.732 * [backup-simplify]: Simplify 1 into 1
3.732 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
3.740 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
3.741 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.741 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
3.742 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (* 0 (pow y 2))) into 0
3.742 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))))) into 0
3.742 * [backup-simplify]: Simplify (- 0) into 0
3.742 * [backup-simplify]: Simplify (+ 0 0) into 0
3.742 * [taylor]: Taking taylor expansion of 0 in y
3.742 * [backup-simplify]: Simplify 0 into 0
3.743 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.743 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.744 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.744 * [backup-simplify]: Simplify (- 0) into 0
3.744 * [backup-simplify]: Simplify 0 into 0
3.744 * [backup-simplify]: Simplify 0 into 0
3.744 * [backup-simplify]: Simplify 0 into 0
3.745 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
3.746 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
3.746 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.747 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
3.747 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (* 0 (pow y 2)))) into 0
3.747 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))) (* 0 (/ 0 (pow y 4))))) into 0
3.748 * [backup-simplify]: Simplify (- 0) into 0
3.748 * [backup-simplify]: Simplify (+ 0 0) into 0
3.748 * [taylor]: Taking taylor expansion of 0 in y
3.748 * [backup-simplify]: Simplify 0 into 0
3.748 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.749 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.750 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.750 * [backup-simplify]: Simplify (- 0) into 0
3.750 * [backup-simplify]: Simplify 0 into 0
3.750 * [backup-simplify]: Simplify 0 into 0
3.750 * [backup-simplify]: Simplify 0 into 0
3.750 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 x))) 4)) (* -1 (pow (* (/ 1 (/ 1 y)) 1) 4))) into (- (pow x 4) (pow y 4))
3.751 * [backup-simplify]: Simplify (- (pow (/ 1 (- x)) 4) (pow (/ 1 (- y)) 4)) into (- (/ 1 (pow x 4)) (/ 1 (pow y 4)))
3.751 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in (x y) around 0
3.751 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in y
3.751 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
3.751 * [taylor]: Taking taylor expansion of (pow x 4) in y
3.751 * [taylor]: Taking taylor expansion of x in y
3.751 * [backup-simplify]: Simplify x into x
3.751 * [backup-simplify]: Simplify (* x x) into (pow x 2)
3.751 * [backup-simplify]: Simplify (* (pow x 2) (pow x 2)) into (pow x 4)
3.751 * [backup-simplify]: Simplify (/ 1 (pow x 4)) into (/ 1 (pow x 4))
3.751 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
3.751 * [taylor]: Taking taylor expansion of (pow y 4) in y
3.751 * [taylor]: Taking taylor expansion of y in y
3.751 * [backup-simplify]: Simplify 0 into 0
3.751 * [backup-simplify]: Simplify 1 into 1
3.751 * [backup-simplify]: Simplify (* 1 1) into 1
3.751 * [backup-simplify]: Simplify (* 1 1) into 1
3.752 * [backup-simplify]: Simplify (/ 1 1) into 1
3.752 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
3.752 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
3.752 * [taylor]: Taking taylor expansion of (pow x 4) in x
3.752 * [taylor]: Taking taylor expansion of x in x
3.752 * [backup-simplify]: Simplify 0 into 0
3.752 * [backup-simplify]: Simplify 1 into 1
3.752 * [backup-simplify]: Simplify (* 1 1) into 1
3.752 * [backup-simplify]: Simplify (* 1 1) into 1
3.753 * [backup-simplify]: Simplify (/ 1 1) into 1
3.753 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
3.753 * [taylor]: Taking taylor expansion of (pow y 4) in x
3.753 * [taylor]: Taking taylor expansion of y in x
3.753 * [backup-simplify]: Simplify y into y
3.753 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.753 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
3.753 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
3.753 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
3.753 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
3.753 * [taylor]: Taking taylor expansion of (pow x 4) in x
3.753 * [taylor]: Taking taylor expansion of x in x
3.753 * [backup-simplify]: Simplify 0 into 0
3.753 * [backup-simplify]: Simplify 1 into 1
3.753 * [backup-simplify]: Simplify (* 1 1) into 1
3.753 * [backup-simplify]: Simplify (* 1 1) into 1
3.754 * [backup-simplify]: Simplify (/ 1 1) into 1
3.754 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
3.754 * [taylor]: Taking taylor expansion of (pow y 4) in x
3.754 * [taylor]: Taking taylor expansion of y in x
3.754 * [backup-simplify]: Simplify y into y
3.754 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.754 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
3.754 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
3.754 * [backup-simplify]: Simplify (+ 1 0) into 1
3.754 * [taylor]: Taking taylor expansion of 1 in y
3.754 * [backup-simplify]: Simplify 1 into 1
3.755 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.755 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.755 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.756 * [backup-simplify]: Simplify (+ 0 0) into 0
3.756 * [taylor]: Taking taylor expansion of 0 in y
3.756 * [backup-simplify]: Simplify 0 into 0
3.756 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.757 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.757 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.758 * [backup-simplify]: Simplify (+ 0 0) into 0
3.758 * [taylor]: Taking taylor expansion of 0 in y
3.758 * [backup-simplify]: Simplify 0 into 0
3.759 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.759 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.760 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.760 * [backup-simplify]: Simplify (+ 0 0) into 0
3.760 * [taylor]: Taking taylor expansion of 0 in y
3.760 * [backup-simplify]: Simplify 0 into 0
3.761 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.761 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.762 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.762 * [backup-simplify]: Simplify (- (/ 1 (pow y 4))) into (- (/ 1 (pow y 4)))
3.762 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 4)))) into (- (/ 1 (pow y 4)))
3.762 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 4))) in y
3.762 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
3.762 * [taylor]: Taking taylor expansion of (pow y 4) in y
3.762 * [taylor]: Taking taylor expansion of y in y
3.762 * [backup-simplify]: Simplify 0 into 0
3.762 * [backup-simplify]: Simplify 1 into 1
3.763 * [backup-simplify]: Simplify (* 1 1) into 1
3.763 * [backup-simplify]: Simplify (* 1 1) into 1
3.763 * [backup-simplify]: Simplify (/ 1 1) into 1
3.763 * [backup-simplify]: Simplify (- 1) into -1
3.763 * [backup-simplify]: Simplify -1 into -1
3.763 * [backup-simplify]: Simplify 1 into 1
3.764 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
3.765 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
3.766 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.766 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
3.766 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (* 0 (pow y 2))) into 0
3.766 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))))) into 0
3.766 * [backup-simplify]: Simplify (- 0) into 0
3.766 * [backup-simplify]: Simplify (+ 0 0) into 0
3.766 * [taylor]: Taking taylor expansion of 0 in y
3.766 * [backup-simplify]: Simplify 0 into 0
3.767 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.767 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.768 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.768 * [backup-simplify]: Simplify (- 0) into 0
3.768 * [backup-simplify]: Simplify 0 into 0
3.768 * [backup-simplify]: Simplify 0 into 0
3.768 * [backup-simplify]: Simplify 0 into 0
3.769 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
3.772 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
3.773 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.773 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
3.773 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (* 0 (pow y 2)))) into 0
3.773 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))) (* 0 (/ 0 (pow y 4))))) into 0
3.774 * [backup-simplify]: Simplify (- 0) into 0
3.774 * [backup-simplify]: Simplify (+ 0 0) into 0
3.774 * [taylor]: Taking taylor expansion of 0 in y
3.774 * [backup-simplify]: Simplify 0 into 0
3.775 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.775 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.776 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.776 * [backup-simplify]: Simplify (- 0) into 0
3.776 * [backup-simplify]: Simplify 0 into 0
3.776 * [backup-simplify]: Simplify 0 into 0
3.776 * [backup-simplify]: Simplify 0 into 0
3.776 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 (- x)))) 4)) (* -1 (pow (* (/ 1 (/ 1 (- y))) 1) 4))) into (- (pow x 4) (pow y 4))
3.776 * * * [progress]: simplifying candidates
3.776 * * * * [progress]: [ 1 / 27 ] simplifiying candidate #<alt (λ (x y) (log (/ (exp (pow x 4)) (exp (pow y 4)))))>
3.777 * * * * [progress]: [ 2 / 27 ] simplifiying candidate #<alt (λ (x y) (pow (- (pow x 4) (pow y 4)) 1))>
3.777 * * * * [progress]: [ 3 / 27 ] simplifiying candidate #<alt (λ (x y) (exp (log (- (pow x 4) (pow y 4)))))>
3.777 * * * * [progress]: [ 4 / 27 ] simplifiying candidate #<alt (λ (x y) (log (exp (- (pow x 4) (pow y 4)))))>
3.777 * * * * [progress]: [ 5 / 27 ] simplifiying candidate #<alt (λ (x y) (* (* (cbrt (- (pow x 4) (pow y 4))) (cbrt (- (pow x 4) (pow y 4)))) (cbrt (- (pow x 4) (pow y 4)))))>
3.777 * * * * [progress]: [ 6 / 27 ] simplifiying candidate #<alt (λ (x y) (cbrt (* (* (- (pow x 4) (pow y 4)) (- (pow x 4) (pow y 4))) (- (pow x 4) (pow y 4)))))>
3.777 * * * * [progress]: [ 7 / 27 ] simplifiying candidate #<alt (λ (x y) (* (sqrt (- (pow x 4) (pow y 4))) (sqrt (- (pow x 4) (pow y 4)))))>
3.777 * * * * [progress]: [ 8 / 27 ] simplifiying candidate #<alt (λ (x y) (/ (- (pow (pow x 4) 3) (pow (pow y 4) 3)) (+ (* (pow x 4) (pow x 4)) (+ (* (pow y 4) (pow y 4)) (* (pow x 4) (pow y 4))))))>
3.777 * * * * [progress]: [ 9 / 27 ] simplifiying candidate #<alt (λ (x y) (+ (pow x 4) (- (pow y 4))))>
3.777 * * * * [progress]: [ 10 / 27 ] simplifiying candidate #<alt (λ (x y) (* 1 (- (pow x 4) (pow y 4))))>
3.777 * * * * [progress]: [ 11 / 27 ] simplifiying candidate #<alt (λ (x y) (/ (- (* (pow x 4) (pow x 4)) (* (pow y 4) (pow y 4))) (+ (pow x 4) (pow y 4))))>
3.777 * * * * [progress]: [ 12 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (pow (sqrt x) 4) (pow (sqrt y) 4)) (- (pow (sqrt x) 4) (pow (sqrt y) 4))))>
3.777 * * * * [progress]: [ 13 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (pow (sqrt x) 4) (sqrt (pow y 4))) (- (pow (sqrt x) 4) (sqrt (pow y 4)))))>
3.777 * * * * [progress]: [ 14 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (pow (sqrt x) 4) (pow y (/ 4 2))) (- (pow (sqrt x) 4) (pow y (/ 4 2)))))>
3.777 * * * * [progress]: [ 15 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (sqrt (pow x 4)) (pow (sqrt y) 4)) (- (sqrt (pow x 4)) (pow (sqrt y) 4))))>
3.777 * * * * [progress]: [ 16 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (sqrt (pow x 4)) (sqrt (pow y 4))) (- (sqrt (pow x 4)) (sqrt (pow y 4)))))>
3.777 * * * * [progress]: [ 17 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (sqrt (pow x 4)) (pow y (/ 4 2))) (- (sqrt (pow x 4)) (pow y (/ 4 2)))))>
3.777 * * * * [progress]: [ 18 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (pow x (/ 4 2)) (pow (sqrt y) 4)) (- (pow x (/ 4 2)) (pow (sqrt y) 4))))>
3.777 * * * * [progress]: [ 19 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (pow x (/ 4 2)) (sqrt (pow y 4))) (- (pow x (/ 4 2)) (sqrt (pow y 4)))))>
3.777 * * * * [progress]: [ 20 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (pow x (/ 4 2)) (pow y (/ 4 2))) (- (pow x (/ 4 2)) (pow y (/ 4 2)))))>
3.777 * * * * [progress]: [ 21 / 27 ] simplifiying candidate #<alt (λ (x y) (* (pow 1 4) (- (pow x 4) (pow y 4))))>
3.777 * * * * [progress]: [ 22 / 27 ] simplifiying candidate #<alt (λ (x y) (* 1 (- (pow x 4) (pow y 4))))>
3.777 * * * * [progress]: [ 23 / 27 ] simplifiying candidate #<alt (λ (x y) (+ (pow x 4) (- (pow y 4))))>
3.778 * * * * [progress]: [ 24 / 27 ] simplifiying candidate #<alt (λ (x y) (posit16->real (real->posit16 (- (pow x 4) (pow y 4)))))>
3.778 * * * * [progress]: [ 25 / 27 ] simplifiying candidate #<alt (λ (x y) 0)>
3.778 * * * * [progress]: [ 26 / 27 ] simplifiying candidate #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
3.778 * * * * [progress]: [ 27 / 27 ] simplifiying candidate #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
3.778 * [simplify]: Simplifying:
  (/ (exp (pow x 4)) (exp (pow y 4)))
  (log (- (pow x 4) (pow y 4)))
  (exp (- (pow x 4) (pow y 4)))
  (* (cbrt (- (pow x 4) (pow y 4))) (cbrt (- (pow x 4) (pow y 4))))
  (cbrt (- (pow x 4) (pow y 4)))
  (* (* (- (pow x 4) (pow y 4)) (- (pow x 4) (pow y 4))) (- (pow x 4) (pow y 4)))
  (sqrt (- (pow x 4) (pow y 4)))
  (sqrt (- (pow x 4) (pow y 4)))
  (- (pow (pow x 4) 3) (pow (pow y 4) 3))
  (+ (* (pow x 4) (pow x 4)) (+ (* (pow y 4) (pow y 4)) (* (pow x 4) (pow y 4))))
  (- (pow y 4))
  (- (* (pow x 4) (pow x 4)) (* (pow y 4) (pow y 4)))
  (+ (pow x 4) (pow y 4))
  (+ (pow (sqrt x) 4) (pow (sqrt y) 4))
  (- (pow (sqrt x) 4) (pow (sqrt y) 4))
  (+ (pow (sqrt x) 4) (sqrt (pow y 4)))
  (- (pow (sqrt x) 4) (sqrt (pow y 4)))
  (+ (pow (sqrt x) 4) (pow y (/ 4 2)))
  (- (pow (sqrt x) 4) (pow y (/ 4 2)))
  (+ (sqrt (pow x 4)) (pow (sqrt y) 4))
  (- (sqrt (pow x 4)) (pow (sqrt y) 4))
  (+ (sqrt (pow x 4)) (sqrt (pow y 4)))
  (- (sqrt (pow x 4)) (sqrt (pow y 4)))
  (+ (sqrt (pow x 4)) (pow y (/ 4 2)))
  (- (sqrt (pow x 4)) (pow y (/ 4 2)))
  (+ (pow x (/ 4 2)) (pow (sqrt y) 4))
  (- (pow x (/ 4 2)) (pow (sqrt y) 4))
  (+ (pow x (/ 4 2)) (sqrt (pow y 4)))
  (- (pow x (/ 4 2)) (sqrt (pow y 4)))
  (+ (pow x (/ 4 2)) (pow y (/ 4 2)))
  (- (pow x (/ 4 2)) (pow y (/ 4 2)))
  (- (pow x 4) (pow y 4))
  (- (pow x 4) (pow y 4))
  (- (pow y 4))
  (real->posit16 (- (pow x 4) (pow y 4)))
  0
  (- (pow x 4) (pow y 4))
  (- (pow x 4) (pow y 4))
3.779 * * [simplify]: iteration 1: (58 enodes)
3.790 * * [simplify]: iteration 2: (118 enodes)
3.818 * * [simplify]: iteration 3: (288 enodes)
3.978 * * [simplify]: iteration 4: (898 enodes)
5.935 * * [simplify]: Extracting #0: cost 22 inf + 0
5.936 * * [simplify]: Extracting #1: cost 206 inf + 1
5.940 * * [simplify]: Extracting #2: cost 755 inf + 1813
5.954 * * [simplify]: Extracting #3: cost 894 inf + 19391
6.002 * * [simplify]: Extracting #4: cost 345 inf + 171784
6.100 * * [simplify]: Extracting #5: cost 35 inf + 258611
6.193 * * [simplify]: Extracting #6: cost 0 inf + 253026
6.268 * * [simplify]: Extracting #7: cost 0 inf + 252786
6.346 * [simplify]: Simplified to:
  (exp (- (* (* x x) (* x x)) (* (* y y) (* y y))))
  (log (- (* (* x x) (* x x)) (* (* y y) (* y y))))
  (exp (- (* (* x x) (* x x)) (* (* y y) (* y y))))
  (* (cbrt (- (* (* x x) (* x x)) (* (* y y) (* y y)))) (cbrt (- (* (* x x) (* x x)) (* (* y y) (* y y)))))
  (cbrt (- (* (* x x) (* x x)) (* (* y y) (* y y))))
  (* (* (- (* (* x x) (* x x)) (* (* y y) (* y y))) (- (* (* x x) (* x x)) (* (* y y) (* y y)))) (- (* (* x x) (* x x)) (* (* y y) (* y y))))
  (sqrt (- (* (* x x) (* x x)) (* (* y y) (* y y))))
  (sqrt (- (* (* x x) (* x x)) (* (* y y) (* y y))))
  (* (+ (* (* y y) (* (* y y) (* y y))) (* (* (* x x) (* x x)) (* x x))) (- (* (* (* x x) (* x x)) (* x x)) (* (* y y) (* (* y y) (* y y)))))
  (+ (* (* (* x x) (* x x)) (* (* x x) (* x x))) (* (+ (* (* y y) (* y y)) (* (* x x) (* x x))) (* (* y y) (* y y))))
  (- (* (* y y) (* y y)))
  (* (- (* (* x x) (* x x)) (* (* y y) (* y y))) (+ (* (* y y) (* y y)) (* (* x x) (* x x))))
  (+ (* (* y y) (* y y)) (* (* x x) (* x x)))
  (+ (* x x) (* y y))
  (* (+ x y) (- x y))
  (+ (* x x) (fabs (* y y)))
  (- (* x x) (fabs (* y y)))
  (+ (* x x) (* y y))
  (* (+ x y) (- x y))
  (+ (* y y) (fabs (* x x)))
  (- (fabs (* x x)) (* y y))
  (+ (fabs (* x x)) (fabs (* y y)))
  (- (fabs (* x x)) (fabs (* y y)))
  (+ (* y y) (fabs (* x x)))
  (- (fabs (* x x)) (* y y))
  (+ (* x x) (* y y))
  (* (+ x y) (- x y))
  (+ (* x x) (fabs (* y y)))
  (- (* x x) (fabs (* y y)))
  (+ (* x x) (* y y))
  (* (+ x y) (- x y))
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
  (- (* (* y y) (* y y)))
  (real->posit16 (- (* (* x x) (* x x)) (* (* y y) (* y y))))
  0
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
6.348 * * * [progress]: adding candidates to table
6.456 * [progress]: [Phase 3 of 3] Extracting.
6.461 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
6.461 * * [simplify]: iteration 1: (6 enodes)
6.462 * * [simplify]: Extracting #0: cost 1 inf + 0
6.462 * * [simplify]: Extracting #1: cost 3 inf + 0
6.462 * * [simplify]: Extracting #2: cost 6 inf + 0
6.462 * * [simplify]: Extracting #3: cost 2 inf + 215
6.462 * * [simplify]: Extracting #4: cost 0 inf + 890
6.462 * [simplify]: Simplified to:
  (- (pow x 4) (pow y 4))
9.236 * [regime-testing]: Baseline error score: 0.002875359419927491
9.238 * [regime-testing]: Oracle error score: 0.002875359419927491
9.238 * [regime-testing]: End program error score: 0.002875359419927491