10.569 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.083 * * * [progress]: [2/2] Setting up program.
0.087 * [progress]: [Phase 2 of 3] Improving.
0.087 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
0.087 * * [simplify]: Extracting # 0 : cost  0
0.087 * * [simplify]: Extracting # 1 : cost  0
0.087 * * [simplify]: Extracting # 2 : cost  0
0.087 * * [simplify]: Extracting # 3 : cost  0
0.088 * * [simplify]: Extracting # 4 : cost  0
0.088 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.090 * * [simplify]: Extracting # 0 : cost  0
0.090 * * [simplify]: Extracting # 1 : cost  0
0.090 * * [simplify]: Extracting # 2 : cost  0
0.090 * * [simplify]: Extracting # 3 : cost  0
0.090 * * [simplify]: Extracting # 4 : cost  0
0.090 * * [simplify]: iteration  1 :  14  enodes  (cost  7 )
0.096 * * [simplify]: Extracting # 0 : cost  0
0.096 * * [simplify]: Extracting # 1 : cost  0
0.096 * * [simplify]: Extracting # 2 : cost  0
0.096 * * [simplify]: Extracting # 3 : cost  0
0.096 * * [simplify]: Extracting # 4 : cost  0
0.096 * * [simplify]: iteration  2 :  29  enodes  (cost  7 )
0.109 * * [simplify]: Extracting # 0 : cost  0
0.109 * * [simplify]: Extracting # 1 : cost  0
0.109 * * [simplify]: Extracting # 2 : cost  0
0.109 * * [simplify]: Extracting # 3 : cost  0
0.109 * * [simplify]: Extracting # 4 : cost  0
0.110 * * [simplify]: Extracting # 5 : cost  0
0.110 * * [simplify]: iteration  3 :  69  enodes  (cost  7 )
0.145 * * [simplify]: Extracting # 0 : cost  0
0.145 * * [simplify]: Extracting # 1 : cost  0
0.146 * * [simplify]: Extracting # 2 : cost  0
0.146 * * [simplify]: Extracting # 3 : cost  0
0.146 * * [simplify]: Extracting # 4 : cost  0
0.146 * * [simplify]: iteration  4 :  200  enodes  (cost  7 )
0.221 * * [simplify]: Extracting # 0 : cost  0
0.222 * * [simplify]: Extracting # 1 : cost  0
0.224 * * [simplify]: Extracting # 2 : cost  0
0.225 * * [simplify]: Extracting # 3 : cost  0
0.226 * * [simplify]: Extracting # 4 : cost  0
0.227 * * [simplify]: Extracting # 5 : cost  0
0.228 * * [simplify]: iteration  5 :  611  enodes  (cost  7 )
0.990 * * [simplify]: Extracting # 0 : cost  0
0.996 * * [simplify]: Extracting # 1 : cost  0
1.002 * * [simplify]: Extracting # 2 : cost  0
1.007 * * [simplify]: Extracting # 3 : cost  0
1.012 * * [simplify]: Extracting # 4 : cost  0
1.017 * * [simplify]: iteration  6 :  2916  enodes  (cost  7 )
2.618 * * [simplify]: Extracting # 0 : cost  0
2.628 * * [simplify]: Extracting # 1 : cost  0
2.639 * * [simplify]: Extracting # 2 : cost  0
2.657 * * [simplify]: Extracting # 3 : cost  0
2.667 * * [simplify]: Extracting # 4 : cost  0
2.676 * * [simplify]: iteration done:  5000  enodes  (cost  7 )
2.677 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
2.677 * * [progress]: iteration 1 / 4
2.677 * * * [progress]: picking best candidate
2.681 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
2.681 * * * [progress]: localizing error
2.692 * * * [progress]: generating rewritten candidates
2.692 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
2.731 * * * [progress]: generating series expansions
2.731 * * * * [progress]: [ 1 / 1 ] generating series at (2)
2.732 * [backup-simplify]: Simplify (- (pow x 4.0) (pow y 4.0)) into (- (pow x 4) (pow y 4))
2.732 * [approximate]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in (x y) around 0
2.732 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in y
2.732 * [taylor]: Taking taylor expansion of (pow x 4) in y
2.732 * [taylor]: Taking taylor expansion of x in y
2.732 * [backup-simplify]: Simplify x into x
2.733 * [taylor]: Taking taylor expansion of (pow y 4) in y
2.733 * [taylor]: Taking taylor expansion of y in y
2.733 * [backup-simplify]: Simplify 0 into 0
2.733 * [backup-simplify]: Simplify 1 into 1
2.733 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in x
2.733 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.733 * [taylor]: Taking taylor expansion of x in x
2.733 * [backup-simplify]: Simplify 0 into 0
2.733 * [backup-simplify]: Simplify 1 into 1
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
2.733 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in x
2.733 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.733 * [taylor]: Taking taylor expansion of x in x
2.733 * [backup-simplify]: Simplify 0 into 0
2.733 * [backup-simplify]: Simplify 1 into 1
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 (- (pow y 4)) into (- (pow y 4))
2.734 * [backup-simplify]: Simplify (+ 0 (- (pow y 4))) into (- (pow y 4))
2.735 * [taylor]: Taking taylor expansion of (- (pow y 4)) in y
2.735 * [taylor]: Taking taylor expansion of (pow y 4) in y
2.735 * [taylor]: Taking taylor expansion of y in y
2.735 * [backup-simplify]: Simplify 0 into 0
2.735 * [backup-simplify]: Simplify 1 into 1
2.735 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
2.735 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (* 0 (pow y 2))) into 0
2.737 * [backup-simplify]: Simplify (- 0) 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
2.737 * [backup-simplify]: Simplify 0 into 0
2.738 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
2.738 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (* 0 (pow y 2)))) into 0
2.739 * [backup-simplify]: Simplify (- 0) into 0
2.739 * [backup-simplify]: Simplify (+ 0 0) into 0
2.739 * [taylor]: Taking taylor expansion of 0 in y
2.739 * [backup-simplify]: Simplify 0 into 0
2.739 * [backup-simplify]: Simplify 0 into 0
2.739 * [backup-simplify]: Simplify 0 into 0
2.740 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))) into 0
2.741 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (pow y 2))))) into 0
2.742 * [backup-simplify]: Simplify (- 0) into 0
2.742 * [backup-simplify]: Simplify (+ 0 0) into 0
2.742 * [taylor]: Taking taylor expansion of 0 in y
2.742 * [backup-simplify]: Simplify 0 into 0
2.742 * [backup-simplify]: Simplify 0 into 0
2.742 * [backup-simplify]: Simplify 0 into 0
2.742 * [backup-simplify]: Simplify 0 into 0
2.742 * [backup-simplify]: Simplify 0 into 0
2.743 * [backup-simplify]: Simplify (- (pow (/ 1 x) 4.0) (pow (/ 1 y) 4.0)) into (- (/ 1 (pow x 4)) (/ 1 (pow y 4)))
2.743 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in (x y) around 0
2.743 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in y
2.743 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
2.743 * [taylor]: Taking taylor expansion of (pow x 4) in y
2.743 * [taylor]: Taking taylor expansion of x in y
2.743 * [backup-simplify]: Simplify x into x
2.743 * [backup-simplify]: Simplify (* x x) into (pow x 2)
2.743 * [backup-simplify]: Simplify (* (pow x 2) (pow x 2)) into (pow x 4)
2.743 * [backup-simplify]: Simplify (/ 1 (pow x 4)) into (/ 1 (pow x 4))
2.743 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
2.743 * [taylor]: Taking taylor expansion of (pow y 4) in y
2.744 * [taylor]: Taking taylor expansion of y in y
2.744 * [backup-simplify]: Simplify 0 into 0
2.744 * [backup-simplify]: Simplify 1 into 1
2.744 * [backup-simplify]: Simplify (* 1 1) into 1
2.744 * [backup-simplify]: Simplify (* 1 1) into 1
2.745 * [backup-simplify]: Simplify (/ 1 1) into 1
2.745 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
2.745 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
2.745 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.745 * [taylor]: Taking taylor expansion of x in x
2.745 * [backup-simplify]: Simplify 0 into 0
2.745 * [backup-simplify]: Simplify 1 into 1
2.745 * [backup-simplify]: Simplify (* 1 1) into 1
2.746 * [backup-simplify]: Simplify (* 1 1) into 1
2.746 * [backup-simplify]: Simplify (/ 1 1) into 1
2.746 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
2.746 * [taylor]: Taking taylor expansion of (pow y 4) in x
2.746 * [taylor]: Taking taylor expansion of y in x
2.746 * [backup-simplify]: Simplify y into y
2.746 * [backup-simplify]: Simplify (* y y) into (pow y 2)
2.746 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
2.747 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
2.747 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
2.747 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
2.747 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.747 * [taylor]: Taking taylor expansion of x in x
2.747 * [backup-simplify]: Simplify 0 into 0
2.747 * [backup-simplify]: Simplify 1 into 1
2.747 * [backup-simplify]: Simplify (* 1 1) into 1
2.747 * [backup-simplify]: Simplify (* 1 1) into 1
2.748 * [backup-simplify]: Simplify (/ 1 1) into 1
2.748 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
2.748 * [taylor]: Taking taylor expansion of (pow y 4) in x
2.748 * [taylor]: Taking taylor expansion of y in x
2.748 * [backup-simplify]: Simplify y into y
2.748 * [backup-simplify]: Simplify (* y y) into (pow y 2)
2.748 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
2.748 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
2.748 * [backup-simplify]: Simplify (+ 1 0) into 1
2.748 * [taylor]: Taking taylor expansion of 1 in y
2.748 * [backup-simplify]: Simplify 1 into 1
2.749 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
2.749 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
2.749 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
2.750 * [backup-simplify]: Simplify (+ 0 0) into 0
2.750 * [taylor]: Taking taylor expansion of 0 in y
2.750 * [backup-simplify]: Simplify 0 into 0
2.750 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
2.751 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
2.751 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.751 * [backup-simplify]: Simplify (+ 0 0) into 0
2.751 * [taylor]: Taking taylor expansion of 0 in y
2.751 * [backup-simplify]: Simplify 0 into 0
2.752 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
2.753 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
2.753 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.753 * [backup-simplify]: Simplify (+ 0 0) into 0
2.753 * [taylor]: Taking taylor expansion of 0 in y
2.753 * [backup-simplify]: Simplify 0 into 0
2.754 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
2.755 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
2.755 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.755 * [backup-simplify]: Simplify (- (/ 1 (pow y 4))) into (- (/ 1 (pow y 4)))
2.756 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 4)))) into (- (/ 1 (pow y 4)))
2.756 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 4))) in y
2.756 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
2.756 * [taylor]: Taking taylor expansion of (pow y 4) in y
2.756 * [taylor]: Taking taylor expansion of y in y
2.756 * [backup-simplify]: Simplify 0 into 0
2.756 * [backup-simplify]: Simplify 1 into 1
2.756 * [backup-simplify]: Simplify (* 1 1) into 1
2.756 * [backup-simplify]: Simplify (* 1 1) into 1
2.757 * [backup-simplify]: Simplify (/ 1 1) into 1
2.757 * [backup-simplify]: Simplify (- 1) into -1
2.757 * [backup-simplify]: Simplify -1 into -1
2.757 * [backup-simplify]: Simplify 1 into 1
2.758 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
2.758 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
2.759 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.759 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
2.759 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (* 0 (pow y 2))) into 0
2.759 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))))) into 0
2.760 * [backup-simplify]: Simplify (- 0) into 0
2.760 * [backup-simplify]: Simplify (+ 0 0) into 0
2.760 * [taylor]: Taking taylor expansion of 0 in y
2.760 * [backup-simplify]: Simplify 0 into 0
2.760 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
2.761 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
2.761 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
2.761 * [backup-simplify]: Simplify (- 0) into 0
2.762 * [backup-simplify]: Simplify 0 into 0
2.762 * [backup-simplify]: Simplify 0 into 0
2.762 * [backup-simplify]: Simplify 0 into 0
2.762 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
2.763 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
2.764 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.764 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
2.764 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (* 0 (pow y 2)))) into 0
2.765 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))) (* 0 (/ 0 (pow y 4))))) into 0
2.765 * [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
2.769 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
2.769 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
2.770 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.770 * [backup-simplify]: Simplify (- 0) into 0
2.770 * [backup-simplify]: Simplify 0 into 0
2.770 * [backup-simplify]: Simplify 0 into 0
2.770 * [backup-simplify]: Simplify 0 into 0
2.771 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 x))) 4)) (* -1 (pow (* (/ 1 (/ 1 y)) 1) 4))) into (- (pow x 4) (pow y 4))
2.771 * [backup-simplify]: Simplify (- (pow (/ 1 (- x)) 4.0) (pow (/ 1 (- y)) 4.0)) into (- (/ 1 (pow x 4)) (/ 1 (pow y 4)))
2.771 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in (x y) around 0
2.771 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in y
2.771 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
2.771 * [taylor]: Taking taylor expansion of (pow x 4) in y
2.771 * [taylor]: Taking taylor expansion of x in y
2.771 * [backup-simplify]: Simplify x into x
2.771 * [backup-simplify]: Simplify (* x x) into (pow x 2)
2.771 * [backup-simplify]: Simplify (* (pow x 2) (pow x 2)) into (pow x 4)
2.771 * [backup-simplify]: Simplify (/ 1 (pow x 4)) into (/ 1 (pow x 4))
2.771 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
2.771 * [taylor]: Taking taylor expansion of (pow y 4) in y
2.771 * [taylor]: Taking taylor expansion of y in y
2.771 * [backup-simplify]: Simplify 0 into 0
2.771 * [backup-simplify]: Simplify 1 into 1
2.772 * [backup-simplify]: Simplify (* 1 1) into 1
2.772 * [backup-simplify]: Simplify (* 1 1) into 1
2.772 * [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
2.773 * [backup-simplify]: Simplify (* 1 1) into 1
2.773 * [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
2.773 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.773 * [taylor]: Taking taylor expansion of x in x
2.773 * [backup-simplify]: Simplify 0 into 0
2.773 * [backup-simplify]: Simplify 1 into 1
2.774 * [backup-simplify]: Simplify (* 1 1) into 1
2.774 * [backup-simplify]: Simplify (* 1 1) into 1
2.774 * [backup-simplify]: Simplify (/ 1 1) into 1
2.774 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
2.774 * [taylor]: Taking taylor expansion of (pow y 4) in x
2.774 * [taylor]: Taking taylor expansion of y in x
2.774 * [backup-simplify]: Simplify y into y
2.774 * [backup-simplify]: Simplify (* y y) into (pow y 2)
2.774 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
2.774 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
2.775 * [backup-simplify]: Simplify (+ 1 0) into 1
2.775 * [taylor]: Taking taylor expansion of 1 in y
2.775 * [backup-simplify]: Simplify 1 into 1
2.775 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
2.776 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
2.777 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
2.777 * [backup-simplify]: Simplify (+ 0 0) into 0
2.777 * [taylor]: Taking taylor expansion of 0 in y
2.777 * [backup-simplify]: Simplify 0 into 0
2.778 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
2.779 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
2.780 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.780 * [backup-simplify]: Simplify (+ 0 0) into 0
2.780 * [taylor]: Taking taylor expansion of 0 in y
2.780 * [backup-simplify]: Simplify 0 into 0
2.781 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
2.782 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
2.783 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.784 * [backup-simplify]: Simplify (+ 0 0) into 0
2.784 * [taylor]: Taking taylor expansion of 0 in y
2.784 * [backup-simplify]: Simplify 0 into 0
2.785 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) 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 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.787 * [backup-simplify]: Simplify (- (/ 1 (pow y 4))) into (- (/ 1 (pow y 4)))
2.787 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 4)))) into (- (/ 1 (pow y 4)))
2.787 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 4))) in y
2.787 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
2.787 * [taylor]: Taking taylor expansion of (pow y 4) in y
2.787 * [taylor]: Taking taylor expansion of y in y
2.787 * [backup-simplify]: Simplify 0 into 0
2.787 * [backup-simplify]: Simplify 1 into 1
2.788 * [backup-simplify]: Simplify (* 1 1) into 1
2.788 * [backup-simplify]: Simplify (* 1 1) into 1
2.789 * [backup-simplify]: Simplify (/ 1 1) into 1
2.789 * [backup-simplify]: Simplify (- 1) into -1
2.789 * [backup-simplify]: Simplify -1 into -1
2.789 * [backup-simplify]: Simplify 1 into 1
2.790 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
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 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.793 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
2.793 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (* 0 (pow y 2))) into 0
2.793 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))))) into 0
2.794 * [backup-simplify]: Simplify (- 0) into 0
2.794 * [backup-simplify]: Simplify (+ 0 0) into 0
2.794 * [taylor]: Taking taylor expansion of 0 in y
2.794 * [backup-simplify]: Simplify 0 into 0
2.795 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
2.795 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
2.796 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
2.797 * [backup-simplify]: Simplify (- 0) into 0
2.797 * [backup-simplify]: Simplify 0 into 0
2.797 * [backup-simplify]: Simplify 0 into 0
2.797 * [backup-simplify]: Simplify 0 into 0
2.798 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) 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 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
2.801 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
2.802 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (* 0 (pow y 2)))) into 0
2.802 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))) (* 0 (/ 0 (pow y 4))))) into 0
2.803 * [backup-simplify]: Simplify (- 0) into 0
2.803 * [backup-simplify]: Simplify (+ 0 0) into 0
2.803 * [taylor]: Taking taylor expansion of 0 in y
2.803 * [backup-simplify]: Simplify 0 into 0
2.804 * [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
2.808 * [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))
2.809 * * [simplify]: Extracting # 0 : cost  0
2.809 * * [simplify]: Extracting # 1 : cost  0
2.810 * * [simplify]: Extracting # 2 : cost  0
2.810 * * [simplify]: Extracting # 3 : cost  0
2.810 * * [simplify]: Extracting # 4 : cost  0
2.810 * * [simplify]: Extracting # 5 : cost  0
2.810 * * [simplify]: Extracting # 6 : cost  0
2.810 * * [simplify]: iteration  0 :  61  enodes  (cost  356 )
2.834 * * [simplify]: Extracting # 0 : cost  0
2.834 * * [simplify]: Extracting # 1 : cost  0
2.835 * * [simplify]: Extracting # 2 : cost  0
2.835 * * [simplify]: Extracting # 3 : cost  0
2.835 * * [simplify]: Extracting # 4 : cost  0
2.835 * * [simplify]: iteration  1 :  127  enodes  (cost  345 )
2.890 * * [simplify]: Extracting # 0 : cost  0
2.890 * * [simplify]: Extracting # 1 : cost  0
2.891 * * [simplify]: Extracting # 2 : cost  0
2.891 * * [simplify]: Extracting # 3 : cost  0
2.892 * * [simplify]: Extracting # 4 : cost  0
2.893 * * [simplify]: iteration  2 :  305  enodes  (cost  331 )
3.053 * * [simplify]: Extracting # 0 : cost  0
3.054 * * [simplify]: Extracting # 1 : cost  0
3.056 * * [simplify]: Extracting # 2 : cost  0
3.057 * * [simplify]: Extracting # 3 : cost  0
3.058 * * [simplify]: Extracting # 4 : cost  0
3.059 * * [simplify]: iteration  3 :  995  enodes  (cost  331 )
4.310 * * [simplify]: Extracting # 0 : cost  0
4.316 * * [simplify]: Extracting # 1 : cost  0
4.322 * * [simplify]: Extracting # 2 : cost  0
4.327 * * [simplify]: Extracting # 3 : cost  0
4.339 * * [simplify]: Extracting # 4 : cost  0
4.344 * * [simplify]: iteration  4 :  4931  enodes  (cost  331 )
7.003 * * [simplify]: Extracting # 0 : cost  0
7.009 * * [simplify]: Extracting # 1 : cost  0
7.014 * * [simplify]: Extracting # 2 : cost  0
7.020 * * [simplify]: Extracting # 3 : cost  0
7.025 * * [simplify]: iteration done:  5001  enodes  (cost  331 )
7.025 * [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))
7.026 * * * [progress]: adding candidates to table
7.152 * [progress]: [Phase 3 of 3] Extracting.
7.156 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
7.156 * * [simplify]: Extracting # 0 : cost  0
7.156 * * [simplify]: Extracting # 1 : cost  0
7.156 * * [simplify]: Extracting # 2 : cost  0
7.156 * * [simplify]: Extracting # 3 : cost  0
7.156 * * [simplify]: Extracting # 4 : cost  0
7.156 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
7.157 * * [simplify]: Extracting # 0 : cost  0
7.157 * * [simplify]: iteration done:  6  enodes  (cost  7 )
7.157 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
8.951 * [regime-testing]: End program error score: 0.0018752344043005376