10.772 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.054 * * * [progress]: [2/2] Setting up program.
0.056 * [progress]: [Phase 2 of 3] Improving.
0.056 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
0.056 * * [simplify]: Extracting # 0 : cost  0
0.056 * * [simplify]: Extracting # 1 : cost  0
0.056 * * [simplify]: Extracting # 2 : cost  0
0.056 * * [simplify]: Extracting # 3 : cost  0
0.056 * * [simplify]: Extracting # 4 : cost  0
0.056 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.057 * * [simplify]: Extracting # 0 : cost  0
0.057 * * [simplify]: Extracting # 1 : cost  0
0.057 * * [simplify]: Extracting # 2 : cost  0
0.058 * * [simplify]: Extracting # 3 : cost  0
0.058 * * [simplify]: Extracting # 4 : cost  0
0.058 * * [simplify]: iteration  1 :  14  enodes  (cost  7 )
0.060 * * [simplify]: Extracting # 0 : cost  0
0.060 * * [simplify]: Extracting # 1 : cost  0
0.060 * * [simplify]: Extracting # 2 : cost  0
0.060 * * [simplify]: Extracting # 3 : cost  0
0.060 * * [simplify]: Extracting # 4 : cost  0
0.060 * * [simplify]: iteration  2 :  29  enodes  (cost  7 )
0.067 * * [simplify]: Extracting # 0 : cost  0
0.067 * * [simplify]: Extracting # 1 : cost  0
0.067 * * [simplify]: Extracting # 2 : cost  0
0.067 * * [simplify]: Extracting # 3 : cost  0
0.067 * * [simplify]: Extracting # 4 : cost  0
0.067 * * [simplify]: Extracting # 5 : cost  0
0.067 * * [simplify]: iteration  3 :  69  enodes  (cost  7 )
0.109 * * [simplify]: Extracting # 0 : cost  0
0.109 * * [simplify]: Extracting # 1 : cost  0
0.110 * * [simplify]: Extracting # 2 : cost  0
0.110 * * [simplify]: Extracting # 3 : cost  0
0.111 * * [simplify]: Extracting # 4 : cost  0
0.111 * * [simplify]: iteration  4 :  200  enodes  (cost  7 )
0.236 * * [simplify]: Extracting # 0 : cost  0
0.238 * * [simplify]: Extracting # 1 : cost  0
0.239 * * [simplify]: Extracting # 2 : cost  0
0.240 * * [simplify]: Extracting # 3 : cost  0
0.241 * * [simplify]: Extracting # 4 : cost  0
0.242 * * [simplify]: Extracting # 5 : cost  0
0.243 * * [simplify]: iteration  5 :  611  enodes  (cost  7 )
1.067 * * [simplify]: Extracting # 0 : cost  0
1.071 * * [simplify]: Extracting # 1 : cost  0
1.076 * * [simplify]: Extracting # 2 : cost  0
1.089 * * [simplify]: Extracting # 3 : cost  0
1.094 * * [simplify]: Extracting # 4 : cost  0
1.099 * * [simplify]: iteration  6 :  2916  enodes  (cost  7 )
2.619 * * [simplify]: Extracting # 0 : cost  0
2.624 * * [simplify]: Extracting # 1 : cost  0
2.630 * * [simplify]: Extracting # 2 : cost  0
2.635 * * [simplify]: Extracting # 3 : cost  0
2.641 * * [simplify]: Extracting # 4 : cost  0
2.651 * * [simplify]: iteration done:  5000  enodes  (cost  7 )
2.651 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
2.652 * * [progress]: iteration 1 / 4
2.652 * * * [progress]: picking best candidate
2.656 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
2.656 * * * [progress]: localizing error
2.679 * * * [progress]: generating rewritten candidates
2.679 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
2.719 * * * [progress]: generating series expansions
2.719 * * * * [progress]: [ 1 / 1 ] generating series at (2)
2.719 * [backup-simplify]: Simplify (- (pow x 4.0) (pow y 4.0)) into (- (pow x 4) (pow y 4))
2.719 * [approximate]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in (x y) around 0
2.719 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in y
2.719 * [taylor]: Taking taylor expansion of (pow x 4) in y
2.719 * [taylor]: Taking taylor expansion of x in y
2.719 * [backup-simplify]: Simplify x into x
2.719 * [taylor]: Taking taylor expansion of (pow y 4) in y
2.720 * [taylor]: Taking taylor expansion of y in y
2.720 * [backup-simplify]: Simplify 0 into 0
2.720 * [backup-simplify]: Simplify 1 into 1
2.720 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in x
2.720 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.720 * [taylor]: Taking taylor expansion of x in x
2.720 * [backup-simplify]: Simplify 0 into 0
2.720 * [backup-simplify]: Simplify 1 into 1
2.720 * [taylor]: Taking taylor expansion of (pow y 4) in x
2.720 * [taylor]: Taking taylor expansion of y in x
2.720 * [backup-simplify]: Simplify y into y
2.720 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in x
2.720 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.720 * [taylor]: Taking taylor expansion of x in x
2.720 * [backup-simplify]: Simplify 0 into 0
2.720 * [backup-simplify]: Simplify 1 into 1
2.720 * [taylor]: Taking taylor expansion of (pow y 4) in x
2.720 * [taylor]: Taking taylor expansion of y in x
2.720 * [backup-simplify]: Simplify y into y
2.720 * [backup-simplify]: Simplify (* y y) into (pow y 2)
2.720 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
2.721 * [backup-simplify]: Simplify (- (pow y 4)) into (- (pow y 4))
2.721 * [backup-simplify]: Simplify (+ 0 (- (pow y 4))) into (- (pow y 4))
2.721 * [taylor]: Taking taylor expansion of (- (pow y 4)) in y
2.721 * [taylor]: Taking taylor expansion of (pow y 4) in y
2.721 * [taylor]: Taking taylor expansion of y in y
2.721 * [backup-simplify]: Simplify 0 into 0
2.721 * [backup-simplify]: Simplify 1 into 1
2.721 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
2.721 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (* 0 (pow y 2))) into 0
2.722 * [backup-simplify]: Simplify (- 0) into 0
2.723 * [backup-simplify]: Simplify (+ 0 0) into 0
2.723 * [taylor]: Taking taylor expansion of 0 in y
2.723 * [backup-simplify]: Simplify 0 into 0
2.723 * [backup-simplify]: Simplify 0 into 0
2.723 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
2.724 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (* 0 (pow y 2)))) into 0
2.724 * [backup-simplify]: Simplify (- 0) into 0
2.725 * [backup-simplify]: Simplify (+ 0 0) into 0
2.725 * [taylor]: Taking taylor expansion of 0 in y
2.725 * [backup-simplify]: Simplify 0 into 0
2.725 * [backup-simplify]: Simplify 0 into 0
2.725 * [backup-simplify]: Simplify 0 into 0
2.726 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))) into 0
2.727 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (pow y 2))))) into 0
2.727 * [backup-simplify]: Simplify (- 0) into 0
2.727 * [backup-simplify]: Simplify (+ 0 0) into 0
2.728 * [taylor]: Taking taylor expansion of 0 in y
2.728 * [backup-simplify]: Simplify 0 into 0
2.728 * [backup-simplify]: Simplify 0 into 0
2.728 * [backup-simplify]: Simplify 0 into 0
2.728 * [backup-simplify]: Simplify 0 into 0
2.728 * [backup-simplify]: Simplify 0 into 0
2.728 * [backup-simplify]: Simplify (- (pow (/ 1 x) 4.0) (pow (/ 1 y) 4.0)) into (- (/ 1 (pow x 4)) (/ 1 (pow y 4)))
2.728 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in (x y) around 0
2.728 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in y
2.728 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
2.728 * [taylor]: Taking taylor expansion of (pow x 4) in y
2.728 * [taylor]: Taking taylor expansion of x in y
2.728 * [backup-simplify]: Simplify x into x
2.728 * [backup-simplify]: Simplify (* x x) into (pow x 2)
2.729 * [backup-simplify]: Simplify (* (pow x 2) (pow x 2)) into (pow x 4)
2.729 * [backup-simplify]: Simplify (/ 1 (pow x 4)) into (/ 1 (pow x 4))
2.729 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
2.729 * [taylor]: Taking taylor expansion of (pow y 4) in y
2.729 * [taylor]: Taking taylor expansion of y in y
2.729 * [backup-simplify]: Simplify 0 into 0
2.729 * [backup-simplify]: Simplify 1 into 1
2.729 * [backup-simplify]: Simplify (* 1 1) into 1
2.730 * [backup-simplify]: Simplify (* 1 1) into 1
2.730 * [backup-simplify]: Simplify (/ 1 1) into 1
2.730 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
2.730 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
2.730 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.730 * [taylor]: Taking taylor expansion of x in x
2.730 * [backup-simplify]: Simplify 0 into 0
2.730 * [backup-simplify]: Simplify 1 into 1
2.731 * [backup-simplify]: Simplify (* 1 1) into 1
2.731 * [backup-simplify]: Simplify (* 1 1) into 1
2.731 * [backup-simplify]: Simplify (/ 1 1) into 1
2.731 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
2.731 * [taylor]: Taking taylor expansion of (pow y 4) in x
2.732 * [taylor]: Taking taylor expansion of y in x
2.732 * [backup-simplify]: Simplify y into y
2.732 * [backup-simplify]: Simplify (* y y) into (pow y 2)
2.732 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
2.732 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
2.732 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
2.732 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
2.732 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.732 * [taylor]: Taking taylor expansion of x in x
2.732 * [backup-simplify]: Simplify 0 into 0
2.732 * [backup-simplify]: Simplify 1 into 1
2.733 * [backup-simplify]: Simplify (* 1 1) into 1
2.733 * [backup-simplify]: Simplify (* 1 1) into 1
2.733 * [backup-simplify]: Simplify (/ 1 1) into 1
2.733 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
2.733 * [taylor]: Taking taylor expansion of (pow y 4) in x
2.733 * [taylor]: Taking taylor expansion of y in x
2.733 * [backup-simplify]: Simplify y into y
2.734 * [backup-simplify]: Simplify (* y y) into (pow y 2)
2.734 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
2.734 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
2.734 * [backup-simplify]: Simplify (+ 1 0) into 1
2.734 * [taylor]: Taking taylor expansion of 1 in y
2.734 * [backup-simplify]: Simplify 1 into 1
2.735 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
2.736 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
2.736 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
2.737 * [backup-simplify]: Simplify (+ 0 0) into 0
2.737 * [taylor]: Taking taylor expansion of 0 in y
2.737 * [backup-simplify]: Simplify 0 into 0
2.738 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
2.739 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
2.740 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.740 * [backup-simplify]: Simplify (+ 0 0) into 0
2.740 * [taylor]: Taking taylor expansion of 0 in y
2.740 * [backup-simplify]: Simplify 0 into 0
2.741 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
2.742 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
2.743 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.744 * [backup-simplify]: Simplify (+ 0 0) into 0
2.744 * [taylor]: Taking taylor expansion of 0 in y
2.744 * [backup-simplify]: Simplify 0 into 0
2.745 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
2.746 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
2.747 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.747 * [backup-simplify]: Simplify (- (/ 1 (pow y 4))) into (- (/ 1 (pow y 4)))
2.748 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 4)))) into (- (/ 1 (pow y 4)))
2.748 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 4))) in y
2.748 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
2.748 * [taylor]: Taking taylor expansion of (pow y 4) in y
2.748 * [taylor]: Taking taylor expansion of y in y
2.748 * [backup-simplify]: Simplify 0 into 0
2.748 * [backup-simplify]: Simplify 1 into 1
2.748 * [backup-simplify]: Simplify (* 1 1) into 1
2.749 * [backup-simplify]: Simplify (* 1 1) into 1
2.749 * [backup-simplify]: Simplify (/ 1 1) into 1
2.749 * [backup-simplify]: Simplify (- 1) into -1
2.749 * [backup-simplify]: Simplify -1 into -1
2.749 * [backup-simplify]: Simplify 1 into 1
2.751 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
2.753 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
2.754 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.754 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
2.754 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (* 0 (pow y 2))) into 0
2.754 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))))) into 0
2.755 * [backup-simplify]: Simplify (- 0) into 0
2.755 * [backup-simplify]: Simplify (+ 0 0) into 0
2.755 * [taylor]: Taking taylor expansion of 0 in y
2.755 * [backup-simplify]: Simplify 0 into 0
2.756 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
2.757 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
2.757 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
2.758 * [backup-simplify]: Simplify (- 0) into 0
2.758 * [backup-simplify]: Simplify 0 into 0
2.758 * [backup-simplify]: Simplify 0 into 0
2.758 * [backup-simplify]: Simplify 0 into 0
2.760 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
2.761 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
2.762 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.763 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
2.763 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (* 0 (pow y 2)))) into 0
2.764 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))) (* 0 (/ 0 (pow y 4))))) into 0
2.764 * [backup-simplify]: Simplify (- 0) into 0
2.765 * [backup-simplify]: Simplify (+ 0 0) into 0
2.765 * [taylor]: Taking taylor expansion of 0 in y
2.765 * [backup-simplify]: Simplify 0 into 0
2.766 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
2.767 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
2.768 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.768 * [backup-simplify]: Simplify (- 0) into 0
2.768 * [backup-simplify]: Simplify 0 into 0
2.768 * [backup-simplify]: Simplify 0 into 0
2.769 * [backup-simplify]: Simplify 0 into 0
2.769 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 x))) 4)) (* -1 (pow (* (/ 1 (/ 1 y)) 1) 4))) into (- (pow x 4) (pow y 4))
2.770 * [backup-simplify]: Simplify (- (pow (/ 1 (- x)) 4.0) (pow (/ 1 (- y)) 4.0)) into (- (/ 1 (pow x 4)) (/ 1 (pow y 4)))
2.770 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in (x y) around 0
2.770 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in y
2.770 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
2.770 * [taylor]: Taking taylor expansion of (pow x 4) in y
2.770 * [taylor]: Taking taylor expansion of x in y
2.770 * [backup-simplify]: Simplify x into x
2.770 * [backup-simplify]: Simplify (* x x) into (pow x 2)
2.770 * [backup-simplify]: Simplify (* (pow x 2) (pow x 2)) into (pow x 4)
2.770 * [backup-simplify]: Simplify (/ 1 (pow x 4)) into (/ 1 (pow x 4))
2.770 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
2.770 * [taylor]: Taking taylor expansion of (pow y 4) in y
2.770 * [taylor]: Taking taylor expansion of y in y
2.770 * [backup-simplify]: Simplify 0 into 0
2.770 * [backup-simplify]: Simplify 1 into 1
2.771 * [backup-simplify]: Simplify (* 1 1) into 1
2.771 * [backup-simplify]: Simplify (* 1 1) into 1
2.772 * [backup-simplify]: Simplify (/ 1 1) into 1
2.772 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
2.772 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
2.772 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.772 * [taylor]: Taking taylor expansion of x in x
2.772 * [backup-simplify]: Simplify 0 into 0
2.772 * [backup-simplify]: Simplify 1 into 1
2.772 * [backup-simplify]: Simplify (* 1 1) into 1
2.772 * [backup-simplify]: Simplify (* 1 1) into 1
2.773 * [backup-simplify]: Simplify (/ 1 1) into 1
2.773 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
2.773 * [taylor]: Taking taylor expansion of (pow y 4) in x
2.773 * [taylor]: Taking taylor expansion of y in x
2.773 * [backup-simplify]: Simplify y into y
2.773 * [backup-simplify]: Simplify (* y y) into (pow y 2)
2.773 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
2.773 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
2.773 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
2.773 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
2.774 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.774 * [taylor]: Taking taylor expansion of x in x
2.774 * [backup-simplify]: Simplify 0 into 0
2.774 * [backup-simplify]: Simplify 1 into 1
2.774 * [backup-simplify]: Simplify (* 1 1) into 1
2.774 * [backup-simplify]: Simplify (* 1 1) into 1
2.775 * [backup-simplify]: Simplify (/ 1 1) into 1
2.775 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
2.775 * [taylor]: Taking taylor expansion of (pow y 4) in x
2.775 * [taylor]: Taking taylor expansion of y in x
2.775 * [backup-simplify]: Simplify y into y
2.775 * [backup-simplify]: Simplify (* y y) into (pow y 2)
2.775 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
2.775 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
2.776 * [backup-simplify]: Simplify (+ 1 0) into 1
2.776 * [taylor]: Taking taylor expansion of 1 in y
2.776 * [backup-simplify]: Simplify 1 into 1
2.777 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
2.777 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
2.778 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
2.778 * [backup-simplify]: Simplify (+ 0 0) into 0
2.778 * [taylor]: Taking taylor expansion of 0 in y
2.778 * [backup-simplify]: Simplify 0 into 0
2.779 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
2.780 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
2.781 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.781 * [backup-simplify]: Simplify (+ 0 0) into 0
2.781 * [taylor]: Taking taylor expansion of 0 in y
2.781 * [backup-simplify]: Simplify 0 into 0
2.782 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
2.783 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
2.784 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.785 * [backup-simplify]: Simplify (+ 0 0) into 0
2.785 * [taylor]: Taking taylor expansion of 0 in y
2.785 * [backup-simplify]: Simplify 0 into 0
2.786 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
2.787 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
2.788 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.788 * [backup-simplify]: Simplify (- (/ 1 (pow y 4))) into (- (/ 1 (pow y 4)))
2.789 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 4)))) into (- (/ 1 (pow y 4)))
2.789 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 4))) in y
2.789 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
2.789 * [taylor]: Taking taylor expansion of (pow y 4) in y
2.789 * [taylor]: Taking taylor expansion of y in y
2.789 * [backup-simplify]: Simplify 0 into 0
2.789 * [backup-simplify]: Simplify 1 into 1
2.789 * [backup-simplify]: Simplify (* 1 1) into 1
2.790 * [backup-simplify]: Simplify (* 1 1) into 1
2.790 * [backup-simplify]: Simplify (/ 1 1) into 1
2.790 * [backup-simplify]: Simplify (- 1) into -1
2.790 * [backup-simplify]: Simplify -1 into -1
2.790 * [backup-simplify]: Simplify 1 into 1
2.792 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
2.793 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
2.794 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.794 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
2.795 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (* 0 (pow y 2))) into 0
2.795 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))))) into 0
2.795 * [backup-simplify]: Simplify (- 0) into 0
2.796 * [backup-simplify]: Simplify (+ 0 0) into 0
2.796 * [taylor]: Taking taylor expansion of 0 in y
2.796 * [backup-simplify]: Simplify 0 into 0
2.796 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
2.797 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
2.798 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
2.798 * [backup-simplify]: Simplify (- 0) into 0
2.798 * [backup-simplify]: Simplify 0 into 0
2.798 * [backup-simplify]: Simplify 0 into 0
2.798 * [backup-simplify]: Simplify 0 into 0
2.800 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
2.801 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
2.802 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.803 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
2.803 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (* 0 (pow y 2)))) into 0
2.804 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))) (* 0 (/ 0 (pow y 4))))) into 0
2.804 * [backup-simplify]: Simplify (- 0) into 0
2.804 * [backup-simplify]: Simplify (+ 0 0) into 0
2.804 * [taylor]: Taking taylor expansion of 0 in y
2.804 * [backup-simplify]: Simplify 0 into 0
2.805 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
2.805 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
2.806 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.806 * [backup-simplify]: Simplify (- 0) into 0
2.806 * [backup-simplify]: Simplify 0 into 0
2.806 * [backup-simplify]: Simplify 0 into 0
2.806 * [backup-simplify]: Simplify 0 into 0
2.807 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 (- x)))) 4)) (* -1 (pow (* (/ 1 (/ 1 (- y))) 1) 4))) into (- (pow x 4) (pow y 4))
2.807 * * * [progress]: simplifying candidates
2.807 * [simplify]: Simplifying:
  (/ (exp (pow x 4.0)) (exp (pow y 4.0)))
  (log (- (pow x 4.0) (pow y 4.0)))
  (exp (- (pow x 4.0) (pow y 4.0)))
  (* (cbrt (- (pow x 4.0) (pow y 4.0))) (cbrt (- (pow x 4.0) (pow y 4.0))))
  (cbrt (- (pow x 4.0) (pow y 4.0)))
  (* (* (- (pow x 4.0) (pow y 4.0)) (- (pow x 4.0) (pow y 4.0))) (- (pow x 4.0) (pow y 4.0)))
  (sqrt (- (pow x 4.0) (pow y 4.0)))
  (sqrt (- (pow x 4.0) (pow y 4.0)))
  (- (pow (pow x 4.0) 3) (pow (pow y 4.0) 3))
  (+ (* (pow x 4.0) (pow x 4.0)) (+ (* (pow y 4.0) (pow y 4.0)) (* (pow x 4.0) (pow y 4.0))))
  (- (pow y 4.0))
  (- (* (pow x 4.0) (pow x 4.0)) (* (pow y 4.0) (pow y 4.0)))
  (+ (pow x 4.0) (pow y 4.0))
  (+ (pow (sqrt x) 4.0) (pow (sqrt y) 4.0))
  (- (pow (sqrt x) 4.0) (pow (sqrt y) 4.0))
  (+ (pow (sqrt x) 4.0) (sqrt (pow y 4.0)))
  (- (pow (sqrt x) 4.0) (sqrt (pow y 4.0)))
  (+ (pow (sqrt x) 4.0) (pow y (/ 4.0 2)))
  (- (pow (sqrt x) 4.0) (pow y (/ 4.0 2)))
  (+ (sqrt (pow x 4.0)) (pow (sqrt y) 4.0))
  (- (sqrt (pow x 4.0)) (pow (sqrt y) 4.0))
  (+ (sqrt (pow x 4.0)) (sqrt (pow y 4.0)))
  (- (sqrt (pow x 4.0)) (sqrt (pow y 4.0)))
  (+ (sqrt (pow x 4.0)) (pow y (/ 4.0 2)))
  (- (sqrt (pow x 4.0)) (pow y (/ 4.0 2)))
  (+ (pow x (/ 4.0 2)) (pow (sqrt y) 4.0))
  (- (pow x (/ 4.0 2)) (pow (sqrt y) 4.0))
  (+ (pow x (/ 4.0 2)) (sqrt (pow y 4.0)))
  (- (pow x (/ 4.0 2)) (sqrt (pow y 4.0)))
  (+ (pow x (/ 4.0 2)) (pow y (/ 4.0 2)))
  (- (pow x (/ 4.0 2)) (pow y (/ 4.0 2)))
  (- (pow x 4.0) (pow y 4.0))
  (- (pow x 4.0) (pow y 4.0))
  (- (pow y 4.0))
  0
  (- (pow x 4) (pow y 4))
  (- (pow x 4) (pow y 4))
2.808 * * [simplify]: Extracting # 0 : cost  0
2.808 * * [simplify]: Extracting # 1 : cost  0
2.808 * * [simplify]: Extracting # 2 : cost  0
2.808 * * [simplify]: Extracting # 3 : cost  0
2.808 * * [simplify]: Extracting # 4 : cost  0
2.808 * * [simplify]: Extracting # 5 : cost  0
2.808 * * [simplify]: Extracting # 6 : cost  0
2.808 * * [simplify]: iteration  0 :  61  enodes  (cost  356 )
2.823 * * [simplify]: Extracting # 0 : cost  0
2.823 * * [simplify]: Extracting # 1 : cost  0
2.823 * * [simplify]: Extracting # 2 : cost  0
2.824 * * [simplify]: Extracting # 3 : cost  0
2.824 * * [simplify]: Extracting # 4 : cost  0
2.824 * * [simplify]: iteration  1 :  127  enodes  (cost  345 )
2.869 * * [simplify]: Extracting # 0 : cost  0
2.869 * * [simplify]: Extracting # 1 : cost  0
2.870 * * [simplify]: Extracting # 2 : cost  0
2.870 * * [simplify]: Extracting # 3 : cost  0
2.871 * * [simplify]: Extracting # 4 : cost  0
2.872 * * [simplify]: iteration  2 :  305  enodes  (cost  331 )
3.059 * * [simplify]: Extracting # 0 : cost  0
3.061 * * [simplify]: Extracting # 1 : cost  0
3.064 * * [simplify]: Extracting # 2 : cost  0
3.066 * * [simplify]: Extracting # 3 : cost  0
3.068 * * [simplify]: Extracting # 4 : cost  0
3.070 * * [simplify]: iteration  3 :  995  enodes  (cost  331 )
4.457 * * [simplify]: Extracting # 0 : cost  0
4.469 * * [simplify]: Extracting # 1 : cost  0
4.480 * * [simplify]: Extracting # 2 : cost  0
4.490 * * [simplify]: Extracting # 3 : cost  0
4.501 * * [simplify]: Extracting # 4 : cost  0
4.511 * * [simplify]: iteration  4 :  4931  enodes  (cost  331 )
7.382 * * [simplify]: Extracting # 0 : cost  0
7.401 * * [simplify]: Extracting # 1 : cost  0
7.411 * * [simplify]: Extracting # 2 : cost  0
7.421 * * [simplify]: Extracting # 3 : cost  0
7.431 * * [simplify]: iteration done:  5001  enodes  (cost  331 )
7.432 * [simplify]: Simplified to:
  (exp (- (pow x 4.0) (pow y 4.0)))
  (log (- (pow x 4.0) (pow y 4.0)))
  (exp (- (pow x 4.0) (pow y 4.0)))
  (* (cbrt (- (pow x 4.0) (pow y 4.0))) (cbrt (- (pow x 4.0) (pow y 4.0))))
  (cbrt (- (pow x 4.0) (pow y 4.0)))
  (pow (- (pow x 4.0) (pow y 4.0)) 3)
  (sqrt (- (pow x 4.0) (pow y 4.0)))
  (sqrt (- (pow x 4.0) (pow y 4.0)))
  (- (pow (pow x 4.0) 3) (pow (pow y 4.0) 3))
  (+ (pow x (* 2 4.0)) (* (pow y 4.0) (+ (pow x 4.0) (pow y 4.0))))
  (- (pow y 4.0))
  (- (pow x (* 2 4.0)) (pow y (* 2 4.0)))
  (+ (pow x 4.0) (pow y 4.0))
  (+ (pow (sqrt x) 4.0) (pow (sqrt y) 4.0))
  (- (pow (sqrt x) 4.0) (pow (sqrt y) 4.0))
  (+ (pow (sqrt x) 4.0) (sqrt (pow y 4.0)))
  (- (pow (sqrt x) 4.0) (sqrt (pow y 4.0)))
  (+ (pow (sqrt x) 4.0) (pow y (/ 4.0 2)))
  (- (pow (sqrt x) 4.0) (pow y (/ 4.0 2)))
  (+ (sqrt (pow x 4.0)) (pow (sqrt y) 4.0))
  (- (sqrt (pow x 4.0)) (pow (sqrt y) 4.0))
  (+ (sqrt (pow x 4.0)) (sqrt (pow y 4.0)))
  (- (sqrt (pow x 4.0)) (sqrt (pow y 4.0)))
  (+ (sqrt (pow x 4.0)) (pow y (/ 4.0 2)))
  (- (sqrt (pow x 4.0)) (pow y (/ 4.0 2)))
  (+ (pow x (/ 4.0 2)) (pow (sqrt y) 4.0))
  (- (pow x (/ 4.0 2)) (pow (sqrt y) 4.0))
  (+ (pow x (/ 4.0 2)) (sqrt (pow y 4.0)))
  (- (pow x (/ 4.0 2)) (sqrt (pow y 4.0)))
  (+ (pow x (/ 4.0 2)) (pow y (/ 4.0 2)))
  (- (pow x (/ 4.0 2)) (pow y (/ 4.0 2)))
  (- (pow x 4.0) (pow y 4.0))
  (- (pow x 4.0) (pow y 4.0))
  (- (pow y 4.0))
  0
  (- (pow x 4) (pow y 4))
  (- (pow x 4) (pow y 4))
7.432 * * * [progress]: adding candidates to table
7.525 * [progress]: [Phase 3 of 3] Extracting.
7.527 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
7.527 * * [simplify]: Extracting # 0 : cost  0
7.528 * * [simplify]: Extracting # 1 : cost  0
7.528 * * [simplify]: Extracting # 2 : cost  0
7.528 * * [simplify]: Extracting # 3 : cost  0
7.528 * * [simplify]: Extracting # 4 : cost  0
7.528 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
7.528 * * [simplify]: Extracting # 0 : cost  0
7.528 * * [simplify]: iteration done:  6  enodes  (cost  7 )
7.528 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
9.715 * [regime-testing]: Baseline error score: 0.0029887349163156044
9.719 * [regime-testing]: Oracle error score: 0.0029887349163156044
9.719 * [regime-testing]: End program error score: 0.0029887349163156044