16.212 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.013 * * * [progress]: [2/2] Setting up program.
0.016 * [progress]: [Phase 2 of 3] Improving.
0.016 * [simplify]: Simplifying:
  (+ x (/ (- y x) 2.0))
0.016 * * [simplify]: iteration 0: 6 enodes
0.017 * * [simplify]: iteration 1: 12 enodes
0.019 * * [simplify]: iteration 2: 19 enodes
0.021 * * [simplify]: iteration 3: 28 enodes
0.024 * * [simplify]: iteration 4: 39 enodes
0.030 * * [simplify]: iteration 5: 96 enodes
0.042 * * [simplify]: iteration 6: 221 enodes
0.114 * * [simplify]: iteration 7: 621 enodes
0.658 * * [simplify]: iteration 8: 2177 enodes
1.561 * * [simplify]: iteration complete: 5001 enodes
1.562 * * [simplify]: Extracting #0: cost 1 inf + 0
1.565 * * [simplify]: Extracting #1: cost 1630 inf + 0
1.570 * * [simplify]: Extracting #2: cost 1824 inf + 7
1.586 * * [simplify]: Extracting #3: cost 1771 inf + 135
1.596 * * [simplify]: Extracting #4: cost 175 inf + 9625
1.606 * * [simplify]: Extracting #5: cost 0 inf + 10664
1.615 * [simplify]: Simplified to:
  (+ (/ (- y x) 2.0) x)
1.622 * * [progress]: iteration 1 / 4
1.622 * * * [progress]: picking best candidate
1.627 * * * * [pick]: Picked  #<alt (λ (x y) (+ (/ (- y x) 2.0) x))>
1.627 * * * [progress]: localizing error
1.640 * * * [progress]: generating rewritten candidates
1.640 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
1.692 * * * [progress]: generating series expansions
1.692 * * * * [progress]: [ 1 / 1 ] generating series at (2)
1.692 * [backup-simplify]: Simplify (+ (/ (- y x) 2.0) x) into (+ (* 0.5 x) (* 0.5 y))
1.692 * [approximate]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in (y x) around 0
1.692 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
1.692 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
1.692 * [taylor]: Taking taylor expansion of 0.5 in x
1.692 * [backup-simplify]: Simplify 0.5 into 0.5
1.693 * [taylor]: Taking taylor expansion of x in x
1.693 * [backup-simplify]: Simplify 0 into 0
1.693 * [backup-simplify]: Simplify 1 into 1
1.693 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
1.693 * [taylor]: Taking taylor expansion of 0.5 in x
1.693 * [backup-simplify]: Simplify 0.5 into 0.5
1.693 * [taylor]: Taking taylor expansion of y in x
1.693 * [backup-simplify]: Simplify y into y
1.693 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in y
1.693 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
1.693 * [taylor]: Taking taylor expansion of 0.5 in y
1.693 * [backup-simplify]: Simplify 0.5 into 0.5
1.693 * [taylor]: Taking taylor expansion of x in y
1.693 * [backup-simplify]: Simplify x into x
1.693 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
1.693 * [taylor]: Taking taylor expansion of 0.5 in y
1.693 * [backup-simplify]: Simplify 0.5 into 0.5
1.693 * [taylor]: Taking taylor expansion of y in y
1.693 * [backup-simplify]: Simplify 0 into 0
1.693 * [backup-simplify]: Simplify 1 into 1
1.693 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in y
1.693 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
1.693 * [taylor]: Taking taylor expansion of 0.5 in y
1.693 * [backup-simplify]: Simplify 0.5 into 0.5
1.693 * [taylor]: Taking taylor expansion of x in y
1.693 * [backup-simplify]: Simplify x into x
1.693 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
1.693 * [taylor]: Taking taylor expansion of 0.5 in y
1.693 * [backup-simplify]: Simplify 0.5 into 0.5
1.693 * [taylor]: Taking taylor expansion of y in y
1.693 * [backup-simplify]: Simplify 0 into 0
1.693 * [backup-simplify]: Simplify 1 into 1
1.693 * [backup-simplify]: Simplify (* 0.5 x) into (* 0.5 x)
1.694 * [backup-simplify]: Simplify (* 0.5 0) into 0
1.694 * [backup-simplify]: Simplify (+ (* 0.5 x) 0) into (* 0.5 x)
1.694 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
1.694 * [taylor]: Taking taylor expansion of 0.5 in x
1.694 * [backup-simplify]: Simplify 0.5 into 0.5
1.694 * [taylor]: Taking taylor expansion of x in x
1.694 * [backup-simplify]: Simplify 0 into 0
1.694 * [backup-simplify]: Simplify 1 into 1
1.694 * [backup-simplify]: Simplify (* 0.5 0) into 0
1.694 * [backup-simplify]: Simplify 0 into 0
1.695 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 x)) into 0
1.696 * [backup-simplify]: Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
1.696 * [backup-simplify]: Simplify (+ 0 0.5) into 0.5
1.696 * [taylor]: Taking taylor expansion of 0.5 in x
1.696 * [backup-simplify]: Simplify 0.5 into 0.5
1.696 * [backup-simplify]: Simplify 0.5 into 0.5
1.697 * [backup-simplify]: Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
1.697 * [backup-simplify]: Simplify 0.5 into 0.5
1.697 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 x))) into 0
1.698 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 1) (* 0 0))) into 0
1.698 * [backup-simplify]: Simplify (+ 0 0) into 0
1.698 * [taylor]: Taking taylor expansion of 0 in x
1.698 * [backup-simplify]: Simplify 0 into 0
1.698 * [backup-simplify]: Simplify 0 into 0
1.698 * [backup-simplify]: Simplify 0 into 0
1.699 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 1) (* 0 0))) into 0
1.699 * [backup-simplify]: Simplify 0 into 0
1.700 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 x)))) into 0
1.700 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 1) (* 0 0)))) into 0
1.701 * [backup-simplify]: Simplify (+ 0 0) into 0
1.701 * [taylor]: Taking taylor expansion of 0 in x
1.701 * [backup-simplify]: Simplify 0 into 0
1.701 * [backup-simplify]: Simplify 0 into 0
1.701 * [backup-simplify]: Simplify 0 into 0
1.701 * [backup-simplify]: Simplify 0 into 0
1.701 * [backup-simplify]: Simplify (+ (* 0.5 (* x 1)) (* 0.5 (* 1 y))) into (+ (* 0.5 x) (* 0.5 y))
1.701 * [backup-simplify]: Simplify (+ (/ (- (/ 1 y) (/ 1 x)) 2.0) (/ 1 x)) into (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))
1.701 * [approximate]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in (y x) around 0
1.701 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
1.701 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.701 * [taylor]: Taking taylor expansion of 0.5 in x
1.701 * [backup-simplify]: Simplify 0.5 into 0.5
1.701 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.701 * [taylor]: Taking taylor expansion of x in x
1.701 * [backup-simplify]: Simplify 0 into 0
1.701 * [backup-simplify]: Simplify 1 into 1
1.701 * [backup-simplify]: Simplify (/ 1 1) into 1
1.701 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
1.701 * [taylor]: Taking taylor expansion of 0.5 in x
1.701 * [backup-simplify]: Simplify 0.5 into 0.5
1.701 * [taylor]: Taking taylor expansion of (/ 1 y) in x
1.701 * [taylor]: Taking taylor expansion of y in x
1.701 * [backup-simplify]: Simplify y into y
1.701 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
1.702 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in y
1.702 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
1.702 * [taylor]: Taking taylor expansion of 0.5 in y
1.702 * [backup-simplify]: Simplify 0.5 into 0.5
1.702 * [taylor]: Taking taylor expansion of (/ 1 x) in y
1.702 * [taylor]: Taking taylor expansion of x in y
1.702 * [backup-simplify]: Simplify x into x
1.702 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
1.702 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.702 * [taylor]: Taking taylor expansion of 0.5 in y
1.702 * [backup-simplify]: Simplify 0.5 into 0.5
1.702 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.702 * [taylor]: Taking taylor expansion of y in y
1.702 * [backup-simplify]: Simplify 0 into 0
1.702 * [backup-simplify]: Simplify 1 into 1
1.702 * [backup-simplify]: Simplify (/ 1 1) into 1
1.702 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in y
1.702 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
1.702 * [taylor]: Taking taylor expansion of 0.5 in y
1.702 * [backup-simplify]: Simplify 0.5 into 0.5
1.702 * [taylor]: Taking taylor expansion of (/ 1 x) in y
1.702 * [taylor]: Taking taylor expansion of x in y
1.702 * [backup-simplify]: Simplify x into x
1.702 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
1.702 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.702 * [taylor]: Taking taylor expansion of 0.5 in y
1.702 * [backup-simplify]: Simplify 0.5 into 0.5
1.702 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.702 * [taylor]: Taking taylor expansion of y in y
1.702 * [backup-simplify]: Simplify 0 into 0
1.702 * [backup-simplify]: Simplify 1 into 1
1.703 * [backup-simplify]: Simplify (/ 1 1) into 1
1.703 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.703 * [backup-simplify]: Simplify (+ 0 0.5) into 0.5
1.703 * [taylor]: Taking taylor expansion of 0.5 in x
1.703 * [backup-simplify]: Simplify 0.5 into 0.5
1.703 * [backup-simplify]: Simplify (* 0.5 (/ 1 x)) into (/ 0.5 x)
1.704 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.705 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.705 * [backup-simplify]: Simplify (+ (/ 0.5 x) 0) into (* 0.5 (/ 1 x))
1.705 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.705 * [taylor]: Taking taylor expansion of 0.5 in x
1.705 * [backup-simplify]: Simplify 0.5 into 0.5
1.705 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.705 * [taylor]: Taking taylor expansion of x in x
1.705 * [backup-simplify]: Simplify 0 into 0
1.705 * [backup-simplify]: Simplify 1 into 1
1.706 * [backup-simplify]: Simplify (/ 1 1) into 1
1.706 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.706 * [backup-simplify]: Simplify 0.5 into 0.5
1.706 * [backup-simplify]: Simplify 0.5 into 0.5
1.706 * [backup-simplify]: Simplify (- (+ (* (/ 1 x) (/ 0 x)))) into 0
1.707 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 (/ 1 x))) into 0
1.708 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.709 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.709 * [backup-simplify]: Simplify (+ 0 0) into 0
1.709 * [taylor]: Taking taylor expansion of 0 in x
1.709 * [backup-simplify]: Simplify 0 into 0
1.710 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.711 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.711 * [backup-simplify]: Simplify 0 into 0
1.711 * [backup-simplify]: Simplify 0 into 0
1.711 * [backup-simplify]: Simplify (- (+ (* (/ 1 x) (/ 0 x)) (* 0 (/ 0 x)))) into 0
1.712 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 (/ 1 x)))) into 0
1.713 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.715 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
1.715 * [backup-simplify]: Simplify (+ 0 0) into 0
1.715 * [taylor]: Taking taylor expansion of 0 in x
1.715 * [backup-simplify]: Simplify 0 into 0
1.715 * [backup-simplify]: Simplify 0 into 0
1.716 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.717 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.717 * [backup-simplify]: Simplify 0 into 0
1.717 * [backup-simplify]: Simplify 0 into 0
1.718 * [backup-simplify]: Simplify (- (+ (* (/ 1 x) (/ 0 x)) (* 0 (/ 0 x)) (* 0 (/ 0 x)))) into 0
1.719 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 x))))) into 0
1.720 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.721 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
1.722 * [backup-simplify]: Simplify (+ 0 0) into 0
1.722 * [taylor]: Taking taylor expansion of 0 in x
1.722 * [backup-simplify]: Simplify 0 into 0
1.722 * [backup-simplify]: Simplify 0 into 0
1.722 * [backup-simplify]: Simplify (+ (* 0.5 (* 1 (/ 1 (/ 1 y)))) (* 0.5 (* (/ 1 (/ 1 x)) 1))) into (+ (* 0.5 x) (* 0.5 y))
1.723 * [backup-simplify]: Simplify (+ (/ (- (/ 1 (- y)) (/ 1 (- x))) 2.0) (/ 1 (- x))) into (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))))
1.723 * [approximate]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in (y x) around 0
1.723 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in x
1.723 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
1.723 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.723 * [taylor]: Taking taylor expansion of 0.5 in x
1.723 * [backup-simplify]: Simplify 0.5 into 0.5
1.723 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.723 * [taylor]: Taking taylor expansion of x in x
1.723 * [backup-simplify]: Simplify 0 into 0
1.723 * [backup-simplify]: Simplify 1 into 1
1.723 * [backup-simplify]: Simplify (/ 1 1) into 1
1.723 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
1.723 * [taylor]: Taking taylor expansion of 0.5 in x
1.724 * [backup-simplify]: Simplify 0.5 into 0.5
1.724 * [taylor]: Taking taylor expansion of (/ 1 y) in x
1.724 * [taylor]: Taking taylor expansion of y in x
1.724 * [backup-simplify]: Simplify y into y
1.724 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
1.724 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in y
1.724 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in y
1.724 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
1.724 * [taylor]: Taking taylor expansion of 0.5 in y
1.724 * [backup-simplify]: Simplify 0.5 into 0.5
1.724 * [taylor]: Taking taylor expansion of (/ 1 x) in y
1.724 * [taylor]: Taking taylor expansion of x in y
1.724 * [backup-simplify]: Simplify x into x
1.724 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
1.724 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.724 * [taylor]: Taking taylor expansion of 0.5 in y
1.724 * [backup-simplify]: Simplify 0.5 into 0.5
1.724 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.724 * [taylor]: Taking taylor expansion of y in y
1.724 * [backup-simplify]: Simplify 0 into 0
1.724 * [backup-simplify]: Simplify 1 into 1
1.725 * [backup-simplify]: Simplify (/ 1 1) into 1
1.725 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in y
1.725 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in y
1.725 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
1.725 * [taylor]: Taking taylor expansion of 0.5 in y
1.725 * [backup-simplify]: Simplify 0.5 into 0.5
1.725 * [taylor]: Taking taylor expansion of (/ 1 x) in y
1.725 * [taylor]: Taking taylor expansion of x in y
1.725 * [backup-simplify]: Simplify x into x
1.725 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
1.725 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.725 * [taylor]: Taking taylor expansion of 0.5 in y
1.725 * [backup-simplify]: Simplify 0.5 into 0.5
1.725 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.725 * [taylor]: Taking taylor expansion of y in y
1.725 * [backup-simplify]: Simplify 0 into 0
1.725 * [backup-simplify]: Simplify 1 into 1
1.726 * [backup-simplify]: Simplify (/ 1 1) into 1
1.726 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.727 * [backup-simplify]: Simplify (+ 0 0.5) into 0.5
1.727 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.727 * [taylor]: Taking taylor expansion of (- 0.5) in x
1.727 * [taylor]: Taking taylor expansion of 0.5 in x
1.727 * [backup-simplify]: Simplify 0.5 into 0.5
1.727 * [backup-simplify]: Simplify (* 0.5 (/ 1 x)) into (/ 0.5 x)
1.728 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.729 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.729 * [backup-simplify]: Simplify (+ (/ 0.5 x) 0) into (* 0.5 (/ 1 x))
1.729 * [backup-simplify]: Simplify (- (* 0.5 (/ 1 x))) into (- (* 0.5 (/ 1 x)))
1.729 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 x))) in x
1.729 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.729 * [taylor]: Taking taylor expansion of 0.5 in x
1.729 * [backup-simplify]: Simplify 0.5 into 0.5
1.729 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.729 * [taylor]: Taking taylor expansion of x in x
1.729 * [backup-simplify]: Simplify 0 into 0
1.729 * [backup-simplify]: Simplify 1 into 1
1.730 * [backup-simplify]: Simplify (/ 1 1) into 1
1.730 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.730 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.731 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.731 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.732 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.732 * [backup-simplify]: Simplify (- (+ (* (/ 1 x) (/ 0 x)))) into 0
1.732 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 (/ 1 x))) into 0
1.733 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.734 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.735 * [backup-simplify]: Simplify (+ 0 0) into 0
1.735 * [backup-simplify]: Simplify (- 0) into 0
1.735 * [taylor]: Taking taylor expansion of 0 in x
1.735 * [backup-simplify]: Simplify 0 into 0
1.736 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.737 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.737 * [backup-simplify]: Simplify (- 0) into 0
1.737 * [backup-simplify]: Simplify 0 into 0
1.738 * [backup-simplify]: Simplify (- 0) into 0
1.738 * [backup-simplify]: Simplify 0 into 0
1.738 * [backup-simplify]: Simplify (- (+ (* (/ 1 x) (/ 0 x)) (* 0 (/ 0 x)))) into 0
1.739 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 (/ 1 x)))) into 0
1.740 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.741 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
1.741 * [backup-simplify]: Simplify (+ 0 0) into 0
1.742 * [backup-simplify]: Simplify (- 0) into 0
1.742 * [taylor]: Taking taylor expansion of 0 in x
1.742 * [backup-simplify]: Simplify 0 into 0
1.742 * [backup-simplify]: Simplify 0 into 0
1.743 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.744 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.744 * [backup-simplify]: Simplify (- 0) into 0
1.744 * [backup-simplify]: Simplify 0 into 0
1.745 * [backup-simplify]: Simplify (- 0) into 0
1.745 * [backup-simplify]: Simplify 0 into 0
1.745 * [backup-simplify]: Simplify (- (+ (* (/ 1 x) (/ 0 x)) (* 0 (/ 0 x)) (* 0 (/ 0 x)))) into 0
1.746 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 x))))) into 0
1.747 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.748 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
1.749 * [backup-simplify]: Simplify (+ 0 0) into 0
1.749 * [backup-simplify]: Simplify (- 0) into 0
1.749 * [taylor]: Taking taylor expansion of 0 in x
1.749 * [backup-simplify]: Simplify 0 into 0
1.749 * [backup-simplify]: Simplify 0 into 0
1.750 * [backup-simplify]: Simplify (+ (* (- 0.5) (* 1 (/ 1 (/ 1 (- y))))) (* (- 0.5) (* (/ 1 (/ 1 (- x))) 1))) into (+ (* 0.5 x) (* 0.5 y))
1.750 * * * [progress]: simplifying candidates
1.751 * [simplify]: Simplifying:
  (* (exp (/ (- y x) 2.0)) (exp x))
  (log (+ (/ (- y x) 2.0) x))
  (exp (+ (/ (- y x) 2.0) x))
  (* (cbrt (+ (/ (- y x) 2.0) x)) (cbrt (+ (/ (- y x) 2.0) x)))
  (cbrt (+ (/ (- y x) 2.0) x))
  (* (* (+ (/ (- y x) 2.0) x) (+ (/ (- y x) 2.0) x)) (+ (/ (- y x) 2.0) x))
  (sqrt (+ (/ (- y x) 2.0) x))
  (sqrt (+ (/ (- y x) 2.0) x))
  (+ (pow (/ (- y x) 2.0) 3) (pow x 3))
  (+ (* (/ (- y x) 2.0) (/ (- y x) 2.0)) (- (* x x) (* (/ (- y x) 2.0) x)))
  (- (* (/ (- y x) 2.0) (/ (- y x) 2.0)) (* x x))
  (- (/ (- y x) 2.0) x)
  (+ (/ (- y x) 2.0) x)
  (- (/ x 2.0) x)
  (+ (* 0.5 x) (* 0.5 y))
  (+ (* 0.5 x) (* 0.5 y))
  (+ (* 0.5 x) (* 0.5 y))
1.752 * * [simplify]: iteration 0: 33 enodes
1.763 * * [simplify]: iteration 1: 91 enodes
1.798 * * [simplify]: iteration 2: 238 enodes
1.908 * * [simplify]: iteration 3: 764 enodes
2.527 * * [simplify]: iteration 4: 4629 enodes
3.751 * * [simplify]: iteration complete: 5000 enodes
3.752 * * [simplify]: Extracting #0: cost 13 inf + 0
3.752 * * [simplify]: Extracting #1: cost 289 inf + 0
3.755 * * [simplify]: Extracting #2: cost 1263 inf + 35
3.760 * * [simplify]: Extracting #3: cost 1507 inf + 566
3.767 * * [simplify]: Extracting #4: cost 751 inf + 9152
3.774 * * [simplify]: Extracting #5: cost 27 inf + 20206
3.785 * * [simplify]: Extracting #6: cost 0 inf + 20708
3.790 * [simplify]: Simplified to:
  (exp (+ x (/ (- y x) 2.0)))
  (log (+ x (/ (- y x) 2.0)))
  (exp (+ x (/ (- y x) 2.0)))
  (* (cbrt (+ x (/ (- y x) 2.0))) (cbrt (+ x (/ (- y x) 2.0))))
  (cbrt (+ x (/ (- y x) 2.0)))
  (pow (+ x (/ (- y x) 2.0)) 3)
  (sqrt (+ x (/ (- y x) 2.0)))
  (sqrt (+ x (/ (- y x) 2.0)))
  (+ (pow (/ (- y x) 2.0) 3) (pow x 3))
  (+ (* (/ (- y x) 2.0) (- (/ (- y x) 2.0) x)) (* x x))
  (- (* (/ (- y x) 2.0) (/ (- y x) 2.0)) (* x x))
  (- (/ (- y x) 2.0) x)
  (+ x (/ (- y x) 2.0))
  (- (/ x 2.0) x)
  (* 0.5 (+ x y))
  (* 0.5 (+ x y))
  (* 0.5 (+ x y))
3.790 * * * [progress]: adding candidates to table
3.833 * * [progress]: iteration 2 / 4
3.833 * * * [progress]: picking best candidate
3.836 * * * * [pick]: Picked  #<alt (λ (x y) (- (/ y 2.0) (- (/ x 2.0) x)))>
3.836 * * * [progress]: localizing error
3.855 * * * [progress]: generating rewritten candidates
3.855 * * * * [progress]: [ 1 / 1 ] rewriting at (2 2)
3.885 * * * [progress]: generating series expansions
3.885 * * * * [progress]: [ 1 / 1 ] generating series at (2 2)
3.886 * [backup-simplify]: Simplify (- (/ x 2.0) x) into (- (* 0.5 x))
3.886 * [approximate]: Taking taylor expansion of (- (* 0.5 x)) in (x) around 0
3.886 * [taylor]: Taking taylor expansion of (- (* 0.5 x)) in x
3.886 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
3.886 * [taylor]: Taking taylor expansion of 0.5 in x
3.886 * [backup-simplify]: Simplify 0.5 into 0.5
3.886 * [taylor]: Taking taylor expansion of x in x
3.886 * [backup-simplify]: Simplify 0 into 0
3.886 * [backup-simplify]: Simplify 1 into 1
3.886 * [taylor]: Taking taylor expansion of (- (* 0.5 x)) in x
3.886 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
3.886 * [taylor]: Taking taylor expansion of 0.5 in x
3.886 * [backup-simplify]: Simplify 0.5 into 0.5
3.886 * [taylor]: Taking taylor expansion of x in x
3.887 * [backup-simplify]: Simplify 0 into 0
3.887 * [backup-simplify]: Simplify 1 into 1
3.887 * [backup-simplify]: Simplify (* 0.5 0) into 0
3.888 * [backup-simplify]: Simplify (- 0) into 0
3.888 * [backup-simplify]: Simplify 0 into 0
3.889 * [backup-simplify]: Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
3.890 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
3.890 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
3.891 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 1) (* 0 0))) into 0
3.892 * [backup-simplify]: Simplify (- 0) into 0
3.892 * [backup-simplify]: Simplify 0 into 0
3.893 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 1) (* 0 0)))) into 0
3.893 * [backup-simplify]: Simplify (- 0) into 0
3.893 * [backup-simplify]: Simplify 0 into 0
3.895 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 1) (* 0 0))))) into 0
3.895 * [backup-simplify]: Simplify (- 0) into 0
3.895 * [backup-simplify]: Simplify 0 into 0
3.897 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 1) (* 0 0)))))) into 0
3.897 * [backup-simplify]: Simplify (- 0) into 0
3.897 * [backup-simplify]: Simplify 0 into 0
3.899 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 1) (* 0 0))))))) into 0
3.899 * [backup-simplify]: Simplify (- 0) into 0
3.899 * [backup-simplify]: Simplify 0 into 0
3.901 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 1) (* 0 0)))))))) into 0
3.901 * [backup-simplify]: Simplify (- 0) into 0
3.901 * [backup-simplify]: Simplify 0 into 0
3.902 * [backup-simplify]: Simplify (* (- 0.5) x) into (* -0.5 x)
3.902 * [backup-simplify]: Simplify (- (/ (/ 1 x) 2.0) (/ 1 x)) into (- (* 0.5 (/ 1 x)))
3.902 * [approximate]: Taking taylor expansion of (- (* 0.5 (/ 1 x))) in (x) around 0
3.902 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 x))) in x
3.902 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
3.902 * [taylor]: Taking taylor expansion of 0.5 in x
3.902 * [backup-simplify]: Simplify 0.5 into 0.5
3.902 * [taylor]: Taking taylor expansion of (/ 1 x) in x
3.902 * [taylor]: Taking taylor expansion of x in x
3.902 * [backup-simplify]: Simplify 0 into 0
3.902 * [backup-simplify]: Simplify 1 into 1
3.902 * [backup-simplify]: Simplify (/ 1 1) into 1
3.903 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 x))) in x
3.903 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
3.903 * [taylor]: Taking taylor expansion of 0.5 in x
3.903 * [backup-simplify]: Simplify 0.5 into 0.5
3.903 * [taylor]: Taking taylor expansion of (/ 1 x) in x
3.903 * [taylor]: Taking taylor expansion of x in x
3.903 * [backup-simplify]: Simplify 0 into 0
3.903 * [backup-simplify]: Simplify 1 into 1
3.903 * [backup-simplify]: Simplify (/ 1 1) into 1
3.904 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
3.904 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
3.904 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
3.905 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.906 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
3.906 * [backup-simplify]: Simplify (- 0) into 0
3.906 * [backup-simplify]: Simplify 0 into 0
3.907 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.908 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
3.908 * [backup-simplify]: Simplify (- 0) into 0
3.908 * [backup-simplify]: Simplify 0 into 0
3.909 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.910 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.911 * [backup-simplify]: Simplify (- 0) into 0
3.911 * [backup-simplify]: Simplify 0 into 0
3.912 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.913 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.914 * [backup-simplify]: Simplify (- 0) into 0
3.914 * [backup-simplify]: Simplify 0 into 0
3.915 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.916 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
3.917 * [backup-simplify]: Simplify (- 0) into 0
3.917 * [backup-simplify]: Simplify 0 into 0
3.918 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.919 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
3.920 * [backup-simplify]: Simplify (- 0) into 0
3.920 * [backup-simplify]: Simplify 0 into 0
3.920 * [backup-simplify]: Simplify (* (- 0.5) (/ 1 (/ 1 x))) into (* -0.5 x)
3.921 * [backup-simplify]: Simplify (- (/ (/ 1 (- x)) 2.0) (/ 1 (- x))) into (* 0.5 (/ 1 x))
3.921 * [approximate]: Taking taylor expansion of (* 0.5 (/ 1 x)) in (x) around 0
3.921 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
3.921 * [taylor]: Taking taylor expansion of 0.5 in x
3.921 * [backup-simplify]: Simplify 0.5 into 0.5
3.921 * [taylor]: Taking taylor expansion of (/ 1 x) in x
3.921 * [taylor]: Taking taylor expansion of x in x
3.921 * [backup-simplify]: Simplify 0 into 0
3.921 * [backup-simplify]: Simplify 1 into 1
3.921 * [backup-simplify]: Simplify (/ 1 1) into 1
3.921 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
3.921 * [taylor]: Taking taylor expansion of 0.5 in x
3.921 * [backup-simplify]: Simplify 0.5 into 0.5
3.921 * [taylor]: Taking taylor expansion of (/ 1 x) in x
3.921 * [taylor]: Taking taylor expansion of x in x
3.921 * [backup-simplify]: Simplify 0 into 0
3.921 * [backup-simplify]: Simplify 1 into 1
3.922 * [backup-simplify]: Simplify (/ 1 1) into 1
3.922 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
3.922 * [backup-simplify]: Simplify 0.5 into 0.5
3.923 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.924 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
3.924 * [backup-simplify]: Simplify 0 into 0
3.925 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.926 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
3.926 * [backup-simplify]: Simplify 0 into 0
3.927 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.929 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.929 * [backup-simplify]: Simplify 0 into 0
3.930 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.931 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.931 * [backup-simplify]: Simplify 0 into 0
3.932 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.933 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
3.934 * [backup-simplify]: Simplify 0 into 0
3.935 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.936 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
3.936 * [backup-simplify]: Simplify 0 into 0
3.936 * [backup-simplify]: Simplify (* 0.5 (/ 1 (/ 1 (- x)))) into (* -0.5 x)
3.937 * * * [progress]: simplifying candidates
3.937 * [simplify]: Simplifying:
  (/ (exp (/ x 2.0)) (exp x))
  (log (- (/ x 2.0) x))
  (exp (- (/ x 2.0) x))
  (* (cbrt (- (/ x 2.0) x)) (cbrt (- (/ x 2.0) x)))
  (cbrt (- (/ x 2.0) x))
  (* (* (- (/ x 2.0) x) (- (/ x 2.0) x)) (- (/ x 2.0) x))
  (sqrt (- (/ x 2.0) x))
  (sqrt (- (/ x 2.0) x))
  (- (pow (/ x 2.0) 3) (pow x 3))
  (+ (* (/ x 2.0) (/ x 2.0)) (+ (* x x) (* (/ x 2.0) x)))
  (- x)
  (- (* (/ x 2.0) (/ x 2.0)) (* x x))
  (+ (/ x 2.0) x)
  (+ (sqrt (/ x 2.0)) (sqrt x))
  (- (sqrt (/ x 2.0)) (sqrt x))
  (+ (/ (sqrt x) (sqrt 2.0)) (sqrt x))
  (- (/ (sqrt x) (sqrt 2.0)) (sqrt x))
  (- (/ x 2.0) x)
  (- x)
  (* -0.5 x)
  (* -0.5 x)
  (* -0.5 x)
3.938 * * [simplify]: iteration 0: 36 enodes
3.949 * * [simplify]: iteration 1: 72 enodes
3.973 * * [simplify]: iteration 2: 159 enodes
4.030 * * [simplify]: iteration 3: 397 enodes
4.251 * * [simplify]: iteration 4: 1480 enodes
4.868 * * [simplify]: iteration complete: 5001 enodes
4.869 * * [simplify]: Extracting #0: cost 17 inf + 0
4.870 * * [simplify]: Extracting #1: cost 316 inf + 0
4.877 * * [simplify]: Extracting #2: cost 1317 inf + 17
4.883 * * [simplify]: Extracting #3: cost 1632 inf + 103
4.889 * * [simplify]: Extracting #4: cost 1382 inf + 3309
4.895 * * [simplify]: Extracting #5: cost 329 inf + 18487
4.906 * * [simplify]: Extracting #6: cost 4 inf + 23085
4.913 * * [simplify]: Extracting #7: cost 0 inf + 23079
4.919 * [simplify]: Simplified to:
  (exp (- (/ x 2.0) x))
  (log (- (/ x 2.0) x))
  (exp (- (/ x 2.0) x))
  (* (cbrt (- (/ x 2.0) x)) (cbrt (- (/ x 2.0) x)))
  (cbrt (- (/ x 2.0) x))
  (pow (- (/ x 2.0) x) 3)
  (sqrt (- (/ x 2.0) x))
  (sqrt (- (/ x 2.0) x))
  (- (pow (/ x 2.0) 3) (pow x 3))
  (* x (+ (/ x 2.0) (+ (/ (/ x 2.0) 2.0) x)))
  (- x)
  (* x (- (/ (/ x 2.0) 2.0) x))
  (+ x (/ x 2.0))
  (+ (sqrt x) (sqrt (/ x 2.0)))
  (- (sqrt (/ x 2.0)) (sqrt x))
  (+ (/ (sqrt x) (sqrt 2.0)) (sqrt x))
  (- (/ (sqrt x) (sqrt 2.0)) (sqrt x))
  (- (/ x 2.0) x)
  (- x)
  (* x -0.5)
  (* x -0.5)
  (* x -0.5)
4.919 * * * [progress]: adding candidates to table
4.978 * [progress]: [Phase 3 of 3] Extracting.
4.980 * [simplify]: Simplifying:
  (- (/ y 2.0) (- (/ x 2.0) x))
4.980 * * [simplify]: iteration 0: 7 enodes
4.980 * * [simplify]: iteration complete: 7 enodes
4.980 * * [simplify]: Extracting #0: cost 1 inf + 0
4.980 * * [simplify]: Extracting #1: cost 3 inf + 0
4.980 * * [simplify]: Extracting #2: cost 7 inf + 0
4.980 * * [simplify]: Extracting #3: cost 2 inf + 11
4.981 * * [simplify]: Extracting #4: cost 0 inf + 23
4.981 * [simplify]: Simplified to:
  (- (/ y 2.0) (- (/ x 2.0) x))
5.941 * [regime-testing]: Baseline error score: 0
5.945 * [regime-testing]: Oracle error score: 0
5.945 * [regime-testing]: End program error score: 0
6.036 * [regime-testing]: Target error score: 0