1.650 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.025 * * * [progress]: [2/2] Setting up program.
0.030 * [progress]: [Phase 2 of 3] Improving.
0.031 * [simplify]: Simplifying:
  (+ x (/ (- y x) 2.0))
0.031 * * [simplify]: iteration 0: 6 enodes
0.033 * * [simplify]: iteration 1: 12 enodes
0.036 * * [simplify]: iteration 2: 19 enodes
0.040 * * [simplify]: iteration 3: 28 enodes
0.046 * * [simplify]: iteration 4: 39 enodes
0.057 * * [simplify]: iteration 5: 96 enodes
0.083 * * [simplify]: iteration 6: 221 enodes
0.186 * * [simplify]: iteration 7: 621 enodes
0.719 * * [simplify]: iteration 8: 2177 enodes
1.629 * * [simplify]: iteration complete: 5001 enodes
1.629 * * [simplify]: Extracting #0: cost 1 inf + 0
1.635 * * [simplify]: Extracting #1: cost 1630 inf + 0
1.656 * * [simplify]: Extracting #2: cost 1824 inf + 7
1.667 * * [simplify]: Extracting #3: cost 1771 inf + 135
1.678 * * [simplify]: Extracting #4: cost 175 inf + 9625
1.684 * * [simplify]: Extracting #5: cost 0 inf + 10664
1.689 * [simplify]: Simplified to:
  (+ (/ (- y x) 2.0) x)
1.693 * * [progress]: iteration 1 / 4
1.693 * * * [progress]: picking best candidate
1.695 * * * * [pick]: Picked  #<alt (λ (x y) (+ (/ (- y x) 2.0) x))>
1.695 * * * [progress]: localizing error
1.702 * * * [progress]: generating rewritten candidates
1.702 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
1.756 * * * [progress]: generating series expansions
1.756 * * * * [progress]: [ 1 / 1 ] generating series at (2)
1.756 * [backup-simplify]: Simplify (+ (/ (- y x) 2.0) x) into (+ (* 0.5 x) (* 0.5 y))
1.756 * [approximate]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in (y x) around 0
1.756 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
1.756 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
1.756 * [taylor]: Taking taylor expansion of 0.5 in x
1.756 * [backup-simplify]: Simplify 0.5 into 0.5
1.756 * [taylor]: Taking taylor expansion of x in x
1.756 * [backup-simplify]: Simplify 0 into 0
1.756 * [backup-simplify]: Simplify 1 into 1
1.756 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
1.756 * [taylor]: Taking taylor expansion of 0.5 in x
1.756 * [backup-simplify]: Simplify 0.5 into 0.5
1.756 * [taylor]: Taking taylor expansion of y in x
1.756 * [backup-simplify]: Simplify y into y
1.756 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in y
1.756 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
1.756 * [taylor]: Taking taylor expansion of 0.5 in y
1.756 * [backup-simplify]: Simplify 0.5 into 0.5
1.756 * [taylor]: Taking taylor expansion of x in y
1.757 * [backup-simplify]: Simplify x into x
1.757 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
1.757 * [taylor]: Taking taylor expansion of 0.5 in y
1.757 * [backup-simplify]: Simplify 0.5 into 0.5
1.757 * [taylor]: Taking taylor expansion of y in y
1.757 * [backup-simplify]: Simplify 0 into 0
1.757 * [backup-simplify]: Simplify 1 into 1
1.757 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in y
1.757 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
1.757 * [taylor]: Taking taylor expansion of 0.5 in y
1.757 * [backup-simplify]: Simplify 0.5 into 0.5
1.757 * [taylor]: Taking taylor expansion of x in y
1.757 * [backup-simplify]: Simplify x into x
1.757 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
1.757 * [taylor]: Taking taylor expansion of 0.5 in y
1.757 * [backup-simplify]: Simplify 0.5 into 0.5
1.757 * [taylor]: Taking taylor expansion of y in y
1.757 * [backup-simplify]: Simplify 0 into 0
1.757 * [backup-simplify]: Simplify 1 into 1
1.757 * [backup-simplify]: Simplify (* 0.5 x) into (* 0.5 x)
1.758 * [backup-simplify]: Simplify (* 0.5 0) into 0
1.758 * [backup-simplify]: Simplify (+ (* 0.5 x) 0) into (* 0.5 x)
1.758 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
1.758 * [taylor]: Taking taylor expansion of 0.5 in x
1.758 * [backup-simplify]: Simplify 0.5 into 0.5
1.758 * [taylor]: Taking taylor expansion of x in x
1.758 * [backup-simplify]: Simplify 0 into 0
1.758 * [backup-simplify]: Simplify 1 into 1
1.759 * [backup-simplify]: Simplify (* 0.5 0) into 0
1.759 * [backup-simplify]: Simplify 0 into 0
1.759 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 x)) into 0
1.761 * [backup-simplify]: Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
1.761 * [backup-simplify]: Simplify (+ 0 0.5) into 0.5
1.761 * [taylor]: Taking taylor expansion of 0.5 in x
1.761 * [backup-simplify]: Simplify 0.5 into 0.5
1.761 * [backup-simplify]: Simplify 0.5 into 0.5
1.763 * [backup-simplify]: Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
1.763 * [backup-simplify]: Simplify 0.5 into 0.5
1.764 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 x))) into 0
1.765 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 1) (* 0 0))) into 0
1.766 * [backup-simplify]: Simplify (+ 0 0) into 0
1.766 * [taylor]: Taking taylor expansion of 0 in x
1.766 * [backup-simplify]: Simplify 0 into 0
1.766 * [backup-simplify]: Simplify 0 into 0
1.766 * [backup-simplify]: Simplify 0 into 0
1.767 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 1) (* 0 0))) into 0
1.767 * [backup-simplify]: Simplify 0 into 0
1.768 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 x)))) into 0
1.769 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 1) (* 0 0)))) into 0
1.769 * [backup-simplify]: Simplify (+ 0 0) into 0
1.769 * [taylor]: Taking taylor expansion of 0 in x
1.769 * [backup-simplify]: Simplify 0 into 0
1.769 * [backup-simplify]: Simplify 0 into 0
1.769 * [backup-simplify]: Simplify 0 into 0
1.769 * [backup-simplify]: Simplify 0 into 0
1.769 * [backup-simplify]: Simplify (+ (* 0.5 (* x 1)) (* 0.5 (* 1 y))) into (+ (* 0.5 x) (* 0.5 y))
1.769 * [backup-simplify]: Simplify (+ (/ (- (/ 1 y) (/ 1 x)) 2.0) (/ 1 x)) into (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))
1.769 * [approximate]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in (y x) around 0
1.769 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
1.769 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.769 * [taylor]: Taking taylor expansion of 0.5 in x
1.769 * [backup-simplify]: Simplify 0.5 into 0.5
1.769 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.769 * [taylor]: Taking taylor expansion of x in x
1.769 * [backup-simplify]: Simplify 0 into 0
1.769 * [backup-simplify]: Simplify 1 into 1
1.770 * [backup-simplify]: Simplify (/ 1 1) into 1
1.770 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
1.770 * [taylor]: Taking taylor expansion of 0.5 in x
1.770 * [backup-simplify]: Simplify 0.5 into 0.5
1.770 * [taylor]: Taking taylor expansion of (/ 1 y) in x
1.770 * [taylor]: Taking taylor expansion of y in x
1.770 * [backup-simplify]: Simplify y into y
1.770 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
1.770 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in y
1.770 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
1.770 * [taylor]: Taking taylor expansion of 0.5 in y
1.770 * [backup-simplify]: Simplify 0.5 into 0.5
1.770 * [taylor]: Taking taylor expansion of (/ 1 x) in y
1.770 * [taylor]: Taking taylor expansion of x in y
1.770 * [backup-simplify]: Simplify x into x
1.770 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
1.770 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.770 * [taylor]: Taking taylor expansion of 0.5 in y
1.770 * [backup-simplify]: Simplify 0.5 into 0.5
1.770 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.770 * [taylor]: Taking taylor expansion of y in y
1.770 * [backup-simplify]: Simplify 0 into 0
1.770 * [backup-simplify]: Simplify 1 into 1
1.770 * [backup-simplify]: Simplify (/ 1 1) into 1
1.770 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in y
1.770 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
1.770 * [taylor]: Taking taylor expansion of 0.5 in y
1.771 * [backup-simplify]: Simplify 0.5 into 0.5
1.771 * [taylor]: Taking taylor expansion of (/ 1 x) in y
1.771 * [taylor]: Taking taylor expansion of x in y
1.771 * [backup-simplify]: Simplify x into x
1.771 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
1.771 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.771 * [taylor]: Taking taylor expansion of 0.5 in y
1.771 * [backup-simplify]: Simplify 0.5 into 0.5
1.771 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.771 * [taylor]: Taking taylor expansion of y in y
1.771 * [backup-simplify]: Simplify 0 into 0
1.771 * [backup-simplify]: Simplify 1 into 1
1.771 * [backup-simplify]: Simplify (/ 1 1) into 1
1.771 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.772 * [backup-simplify]: Simplify (+ 0 0.5) into 0.5
1.772 * [taylor]: Taking taylor expansion of 0.5 in x
1.772 * [backup-simplify]: Simplify 0.5 into 0.5
1.772 * [backup-simplify]: Simplify (* 0.5 (/ 1 x)) into (/ 0.5 x)
1.772 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.773 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.773 * [backup-simplify]: Simplify (+ (/ 0.5 x) 0) into (* 0.5 (/ 1 x))
1.773 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.773 * [taylor]: Taking taylor expansion of 0.5 in x
1.773 * [backup-simplify]: Simplify 0.5 into 0.5
1.773 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.773 * [taylor]: Taking taylor expansion of x in x
1.773 * [backup-simplify]: Simplify 0 into 0
1.773 * [backup-simplify]: Simplify 1 into 1
1.773 * [backup-simplify]: Simplify (/ 1 1) into 1
1.773 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.774 * [backup-simplify]: Simplify 0.5 into 0.5
1.774 * [backup-simplify]: Simplify 0.5 into 0.5
1.774 * [backup-simplify]: Simplify (- (+ (* (/ 1 x) (/ 0 x)))) into 0
1.774 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 (/ 1 x))) into 0
1.774 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.775 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.775 * [backup-simplify]: Simplify (+ 0 0) into 0
1.775 * [taylor]: Taking taylor expansion of 0 in x
1.775 * [backup-simplify]: Simplify 0 into 0
1.776 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.776 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.776 * [backup-simplify]: Simplify 0 into 0
1.776 * [backup-simplify]: Simplify 0 into 0
1.776 * [backup-simplify]: Simplify (- (+ (* (/ 1 x) (/ 0 x)) (* 0 (/ 0 x)))) into 0
1.777 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 (/ 1 x)))) into 0
1.777 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.778 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
1.778 * [backup-simplify]: Simplify (+ 0 0) into 0
1.778 * [taylor]: Taking taylor expansion of 0 in x
1.778 * [backup-simplify]: Simplify 0 into 0
1.778 * [backup-simplify]: Simplify 0 into 0
1.779 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.780 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.780 * [backup-simplify]: Simplify 0 into 0
1.780 * [backup-simplify]: Simplify 0 into 0
1.780 * [backup-simplify]: Simplify (- (+ (* (/ 1 x) (/ 0 x)) (* 0 (/ 0 x)) (* 0 (/ 0 x)))) into 0
1.780 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 x))))) into 0
1.781 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.782 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
1.782 * [backup-simplify]: Simplify (+ 0 0) into 0
1.782 * [taylor]: Taking taylor expansion of 0 in x
1.782 * [backup-simplify]: Simplify 0 into 0
1.782 * [backup-simplify]: Simplify 0 into 0
1.782 * [backup-simplify]: Simplify (+ (* 0.5 (* 1 (/ 1 (/ 1 y)))) (* 0.5 (* (/ 1 (/ 1 x)) 1))) into (+ (* 0.5 x) (* 0.5 y))
1.782 * [backup-simplify]: Simplify (+ (/ (- (/ 1 (- y)) (/ 1 (- x))) 2.0) (/ 1 (- x))) into (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))))
1.782 * [approximate]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in (y x) around 0
1.782 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in x
1.782 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
1.782 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.783 * [taylor]: Taking taylor expansion of 0.5 in x
1.783 * [backup-simplify]: Simplify 0.5 into 0.5
1.783 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.783 * [taylor]: Taking taylor expansion of x in x
1.783 * [backup-simplify]: Simplify 0 into 0
1.783 * [backup-simplify]: Simplify 1 into 1
1.783 * [backup-simplify]: Simplify (/ 1 1) into 1
1.783 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
1.783 * [taylor]: Taking taylor expansion of 0.5 in x
1.783 * [backup-simplify]: Simplify 0.5 into 0.5
1.783 * [taylor]: Taking taylor expansion of (/ 1 y) in x
1.783 * [taylor]: Taking taylor expansion of y in x
1.783 * [backup-simplify]: Simplify y into y
1.783 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
1.783 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in y
1.783 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in y
1.783 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
1.783 * [taylor]: Taking taylor expansion of 0.5 in y
1.783 * [backup-simplify]: Simplify 0.5 into 0.5
1.783 * [taylor]: Taking taylor expansion of (/ 1 x) in y
1.783 * [taylor]: Taking taylor expansion of x in y
1.783 * [backup-simplify]: Simplify x into x
1.783 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
1.783 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.783 * [taylor]: Taking taylor expansion of 0.5 in y
1.783 * [backup-simplify]: Simplify 0.5 into 0.5
1.783 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.783 * [taylor]: Taking taylor expansion of y in y
1.783 * [backup-simplify]: Simplify 0 into 0
1.783 * [backup-simplify]: Simplify 1 into 1
1.784 * [backup-simplify]: Simplify (/ 1 1) into 1
1.784 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in y
1.784 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in y
1.784 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
1.784 * [taylor]: Taking taylor expansion of 0.5 in y
1.784 * [backup-simplify]: Simplify 0.5 into 0.5
1.784 * [taylor]: Taking taylor expansion of (/ 1 x) in y
1.784 * [taylor]: Taking taylor expansion of x in y
1.784 * [backup-simplify]: Simplify x into x
1.784 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
1.784 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.784 * [taylor]: Taking taylor expansion of 0.5 in y
1.784 * [backup-simplify]: Simplify 0.5 into 0.5
1.784 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.784 * [taylor]: Taking taylor expansion of y in y
1.784 * [backup-simplify]: Simplify 0 into 0
1.784 * [backup-simplify]: Simplify 1 into 1
1.784 * [backup-simplify]: Simplify (/ 1 1) into 1
1.784 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.785 * [backup-simplify]: Simplify (+ 0 0.5) into 0.5
1.785 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.785 * [taylor]: Taking taylor expansion of (- 0.5) in x
1.785 * [taylor]: Taking taylor expansion of 0.5 in x
1.785 * [backup-simplify]: Simplify 0.5 into 0.5
1.785 * [backup-simplify]: Simplify (* 0.5 (/ 1 x)) into (/ 0.5 x)
1.785 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.786 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.786 * [backup-simplify]: Simplify (+ (/ 0.5 x) 0) into (* 0.5 (/ 1 x))
1.786 * [backup-simplify]: Simplify (- (* 0.5 (/ 1 x))) into (- (* 0.5 (/ 1 x)))
1.786 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 x))) in x
1.786 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.786 * [taylor]: Taking taylor expansion of 0.5 in x
1.786 * [backup-simplify]: Simplify 0.5 into 0.5
1.786 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.786 * [taylor]: Taking taylor expansion of x in x
1.786 * [backup-simplify]: Simplify 0 into 0
1.786 * [backup-simplify]: Simplify 1 into 1
1.786 * [backup-simplify]: Simplify (/ 1 1) into 1
1.787 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.787 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.787 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.787 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.788 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.788 * [backup-simplify]: Simplify (- (+ (* (/ 1 x) (/ 0 x)))) into 0
1.788 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 (/ 1 x))) into 0
1.789 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.789 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.789 * [backup-simplify]: Simplify (+ 0 0) into 0
1.790 * [backup-simplify]: Simplify (- 0) into 0
1.790 * [taylor]: Taking taylor expansion of 0 in x
1.790 * [backup-simplify]: Simplify 0 into 0
1.790 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.791 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.791 * [backup-simplify]: Simplify (- 0) into 0
1.791 * [backup-simplify]: Simplify 0 into 0
1.791 * [backup-simplify]: Simplify (- 0) into 0
1.791 * [backup-simplify]: Simplify 0 into 0
1.791 * [backup-simplify]: Simplify (- (+ (* (/ 1 x) (/ 0 x)) (* 0 (/ 0 x)))) into 0
1.792 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 (/ 1 x)))) into 0
1.792 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.793 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
1.793 * [backup-simplify]: Simplify (+ 0 0) into 0
1.793 * [backup-simplify]: Simplify (- 0) into 0
1.793 * [taylor]: Taking taylor expansion of 0 in x
1.793 * [backup-simplify]: Simplify 0 into 0
1.793 * [backup-simplify]: Simplify 0 into 0
1.794 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.795 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.795 * [backup-simplify]: Simplify (- 0) into 0
1.795 * [backup-simplify]: Simplify 0 into 0
1.795 * [backup-simplify]: Simplify (- 0) into 0
1.795 * [backup-simplify]: Simplify 0 into 0
1.795 * [backup-simplify]: Simplify (- (+ (* (/ 1 x) (/ 0 x)) (* 0 (/ 0 x)) (* 0 (/ 0 x)))) into 0
1.796 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 x))))) into 0
1.797 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.798 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
1.799 * [backup-simplify]: Simplify (+ 0 0) into 0
1.799 * [backup-simplify]: Simplify (- 0) into 0
1.799 * [taylor]: Taking taylor expansion of 0 in x
1.799 * [backup-simplify]: Simplify 0 into 0
1.799 * [backup-simplify]: Simplify 0 into 0
1.800 * [backup-simplify]: Simplify (+ (* (- 0.5) (* 1 (/ 1 (/ 1 (- y))))) (* (- 0.5) (* (/ 1 (/ 1 (- x))) 1))) into (+ (* 0.5 x) (* 0.5 y))
1.800 * * * [progress]: simplifying candidates
1.801 * [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))
1.801 * * [simplify]: iteration 0: 33 enodes
1.812 * * [simplify]: iteration 1: 91 enodes
1.847 * * [simplify]: iteration 2: 238 enodes
1.937 * * [simplify]: iteration 3: 764 enodes
2.685 * * [simplify]: iteration 4: 4629 enodes
3.968 * * [simplify]: iteration complete: 5000 enodes
3.968 * * [simplify]: Extracting #0: cost 13 inf + 0
3.968 * * [simplify]: Extracting #1: cost 289 inf + 0
3.971 * * [simplify]: Extracting #2: cost 1263 inf + 35
3.977 * * [simplify]: Extracting #3: cost 1507 inf + 566
3.983 * * [simplify]: Extracting #4: cost 751 inf + 9152
3.993 * * [simplify]: Extracting #5: cost 27 inf + 20206
4.014 * * [simplify]: Extracting #6: cost 0 inf + 20708
4.025 * [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))
4.025 * * * [progress]: adding candidates to table
4.111 * * [progress]: iteration 2 / 4
4.111 * * * [progress]: picking best candidate
4.116 * * * * [pick]: Picked  #<alt (λ (x y) (- (/ y 2.0) (- (/ x 2.0) x)))>
4.116 * * * [progress]: localizing error
4.136 * * * [progress]: generating rewritten candidates
4.136 * * * [progress]: generating series expansions
4.136 * * * [progress]: simplifying candidates
4.136 * [simplify]: Simplifying:
  
4.136 * * [simplify]: iteration 0: 0 enodes
4.136 * * [simplify]: iteration complete: 0 enodes
4.136 * * [simplify]: Extracting #0: cost 0 inf + 0
4.137 * [simplify]: Simplified to:
  
4.137 * * * [progress]: adding candidates to table
4.137 * [progress]: [Phase 3 of 3] Extracting.
4.142 * [simplify]: Simplifying:
  (- (/ y 2.0) (- (/ x 2.0) x))
4.142 * * [simplify]: iteration 0: 7 enodes
4.143 * * [simplify]: iteration complete: 7 enodes
4.143 * * [simplify]: Extracting #0: cost 1 inf + 0
4.143 * * [simplify]: Extracting #1: cost 3 inf + 0
4.143 * * [simplify]: Extracting #2: cost 7 inf + 0
4.143 * * [simplify]: Extracting #3: cost 2 inf + 11
4.143 * * [simplify]: Extracting #4: cost 0 inf + 23
4.143 * [simplify]: Simplified to:
  (- (/ y 2.0) (- (/ x 2.0) x))
5.083 * [regime-testing]: Baseline error score: 0
5.087 * [regime-testing]: Oracle error score: 0
5.087 * [regime-testing]: End program error score: 0
5.192 * [regime-testing]: Target error score: 0