54.047 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.015 * * * [progress]: [2/2] Setting up program.
0.020 * [progress]: [Phase 2 of 3] Improving.
0.020 * [simplify]: Simplifying:
  (+ x (/ (- y x) 2.0))
0.020 * * [simplify]: iteration 0: 6 enodes
0.022 * * [simplify]: iteration 1: 12 enodes
0.024 * * [simplify]: iteration 2: 19 enodes
0.027 * * [simplify]: iteration 3: 28 enodes
0.032 * * [simplify]: iteration 4: 39 enodes
0.040 * * [simplify]: iteration 5: 96 enodes
0.059 * * [simplify]: iteration 6: 221 enodes
0.133 * * [simplify]: iteration 7: 621 enodes
0.862 * * [simplify]: iteration 8: 2177 enodes
1.575 * * [simplify]: iteration complete: 5001 enodes
1.575 * * [simplify]: Extracting #0: cost 1 inf + 0
1.578 * * [simplify]: Extracting #1: cost 1630 inf + 0
1.584 * * [simplify]: Extracting #2: cost 1824 inf + 7
1.591 * * [simplify]: Extracting #3: cost 1771 inf + 135
1.598 * * [simplify]: Extracting #4: cost 175 inf + 9625
1.604 * * [simplify]: Extracting #5: cost 0 inf + 10664
1.609 * [simplify]: Simplified to:
  (+ (/ (- y x) 2.0) x)
1.615 * * [progress]: iteration 1 / 4
1.615 * * * [progress]: picking best candidate
1.618 * * * * [pick]: Picked  #<alt (λ (x y) (+ x (/ (- y x) 2.0)))>
1.618 * * * [progress]: localizing error
1.626 * * * [progress]: generating rewritten candidates
1.626 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
1.654 * * * [progress]: generating series expansions
1.654 * * * * [progress]: [ 1 / 1 ] generating series at (2)
1.654 * [backup-simplify]: Simplify (+ x (/ (- y x) 2.0)) into (+ (* 0.5 x) (* 0.5 y))
1.655 * [approximate]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in (x y) around 0
1.655 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in y
1.655 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
1.655 * [taylor]: Taking taylor expansion of 0.5 in y
1.655 * [backup-simplify]: Simplify 0.5 into 0.5
1.655 * [taylor]: Taking taylor expansion of x in y
1.655 * [backup-simplify]: Simplify x into x
1.655 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
1.655 * [taylor]: Taking taylor expansion of 0.5 in y
1.655 * [backup-simplify]: Simplify 0.5 into 0.5
1.655 * [taylor]: Taking taylor expansion of y in y
1.655 * [backup-simplify]: Simplify 0 into 0
1.655 * [backup-simplify]: Simplify 1 into 1
1.655 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
1.655 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
1.655 * [taylor]: Taking taylor expansion of 0.5 in x
1.655 * [backup-simplify]: Simplify 0.5 into 0.5
1.655 * [taylor]: Taking taylor expansion of x in x
1.655 * [backup-simplify]: Simplify 0 into 0
1.655 * [backup-simplify]: Simplify 1 into 1
1.655 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
1.655 * [taylor]: Taking taylor expansion of 0.5 in x
1.655 * [backup-simplify]: Simplify 0.5 into 0.5
1.655 * [taylor]: Taking taylor expansion of y in x
1.655 * [backup-simplify]: Simplify y into y
1.655 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
1.655 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
1.655 * [taylor]: Taking taylor expansion of 0.5 in x
1.655 * [backup-simplify]: Simplify 0.5 into 0.5
1.655 * [taylor]: Taking taylor expansion of x in x
1.655 * [backup-simplify]: Simplify 0 into 0
1.655 * [backup-simplify]: Simplify 1 into 1
1.655 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
1.655 * [taylor]: Taking taylor expansion of 0.5 in x
1.655 * [backup-simplify]: Simplify 0.5 into 0.5
1.655 * [taylor]: Taking taylor expansion of y in x
1.655 * [backup-simplify]: Simplify y into y
1.656 * [backup-simplify]: Simplify (* 0.5 0) into 0
1.656 * [backup-simplify]: Simplify (* 0.5 y) into (* 0.5 y)
1.656 * [backup-simplify]: Simplify (+ 0 (* 0.5 y)) into (* 0.5 y)
1.656 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
1.656 * [taylor]: Taking taylor expansion of 0.5 in y
1.656 * [backup-simplify]: Simplify 0.5 into 0.5
1.656 * [taylor]: Taking taylor expansion of y in y
1.656 * [backup-simplify]: Simplify 0 into 0
1.656 * [backup-simplify]: Simplify 1 into 1
1.657 * [backup-simplify]: Simplify (* 0.5 0) into 0
1.657 * [backup-simplify]: Simplify 0 into 0
1.658 * [backup-simplify]: Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
1.658 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 y)) into 0
1.658 * [backup-simplify]: Simplify (+ 0.5 0) into 0.5
1.658 * [taylor]: Taking taylor expansion of 0.5 in y
1.658 * [backup-simplify]: Simplify 0.5 into 0.5
1.659 * [backup-simplify]: Simplify 0.5 into 0.5
1.660 * [backup-simplify]: Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
1.660 * [backup-simplify]: Simplify 0.5 into 0.5
1.660 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 1) (* 0 0))) into 0
1.661 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 y))) into 0
1.661 * [backup-simplify]: Simplify (+ 0 0) into 0
1.661 * [taylor]: Taking taylor expansion of 0 in y
1.661 * [backup-simplify]: Simplify 0 into 0
1.661 * [backup-simplify]: Simplify 0 into 0
1.661 * [backup-simplify]: Simplify 0 into 0
1.662 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 1) (* 0 0))) into 0
1.662 * [backup-simplify]: Simplify 0 into 0
1.663 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 1) (* 0 0)))) into 0
1.664 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))) into 0
1.664 * [backup-simplify]: Simplify (+ 0 0) into 0
1.664 * [taylor]: Taking taylor expansion of 0 in y
1.664 * [backup-simplify]: Simplify 0 into 0
1.664 * [backup-simplify]: Simplify 0 into 0
1.664 * [backup-simplify]: Simplify 0 into 0
1.664 * [backup-simplify]: Simplify 0 into 0
1.665 * [backup-simplify]: Simplify (+ (* 0.5 (* y 1)) (* 0.5 (* 1 x))) into (+ (* 0.5 x) (* 0.5 y))
1.665 * [backup-simplify]: Simplify (+ (/ 1 x) (/ (- (/ 1 y) (/ 1 x)) 2.0)) into (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))
1.665 * [approximate]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in (x y) around 0
1.665 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in y
1.665 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
1.665 * [taylor]: Taking taylor expansion of 0.5 in y
1.665 * [backup-simplify]: Simplify 0.5 into 0.5
1.665 * [taylor]: Taking taylor expansion of (/ 1 x) in y
1.665 * [taylor]: Taking taylor expansion of x in y
1.665 * [backup-simplify]: Simplify x into x
1.665 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
1.665 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.665 * [taylor]: Taking taylor expansion of 0.5 in y
1.665 * [backup-simplify]: Simplify 0.5 into 0.5
1.665 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.665 * [taylor]: Taking taylor expansion of y in y
1.665 * [backup-simplify]: Simplify 0 into 0
1.665 * [backup-simplify]: Simplify 1 into 1
1.665 * [backup-simplify]: Simplify (/ 1 1) into 1
1.665 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
1.665 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.666 * [taylor]: Taking taylor expansion of 0.5 in x
1.666 * [backup-simplify]: Simplify 0.5 into 0.5
1.666 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.666 * [taylor]: Taking taylor expansion of x in x
1.666 * [backup-simplify]: Simplify 0 into 0
1.666 * [backup-simplify]: Simplify 1 into 1
1.666 * [backup-simplify]: Simplify (/ 1 1) into 1
1.666 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
1.666 * [taylor]: Taking taylor expansion of 0.5 in x
1.666 * [backup-simplify]: Simplify 0.5 into 0.5
1.666 * [taylor]: Taking taylor expansion of (/ 1 y) in x
1.666 * [taylor]: Taking taylor expansion of y in x
1.666 * [backup-simplify]: Simplify y into y
1.666 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
1.666 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
1.666 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.666 * [taylor]: Taking taylor expansion of 0.5 in x
1.666 * [backup-simplify]: Simplify 0.5 into 0.5
1.666 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.666 * [taylor]: Taking taylor expansion of x in x
1.666 * [backup-simplify]: Simplify 0 into 0
1.666 * [backup-simplify]: Simplify 1 into 1
1.667 * [backup-simplify]: Simplify (/ 1 1) into 1
1.667 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
1.667 * [taylor]: Taking taylor expansion of 0.5 in x
1.667 * [backup-simplify]: Simplify 0.5 into 0.5
1.667 * [taylor]: Taking taylor expansion of (/ 1 y) in x
1.667 * [taylor]: Taking taylor expansion of y in x
1.667 * [backup-simplify]: Simplify y into y
1.667 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
1.667 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.668 * [backup-simplify]: Simplify (+ 0.5 0) into 0.5
1.668 * [taylor]: Taking taylor expansion of 0.5 in y
1.668 * [backup-simplify]: Simplify 0.5 into 0.5
1.668 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.669 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.669 * [backup-simplify]: Simplify (* 0.5 (/ 1 y)) into (/ 0.5 y)
1.669 * [backup-simplify]: Simplify (+ 0 (/ 0.5 y)) into (* 0.5 (/ 1 y))
1.669 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.669 * [taylor]: Taking taylor expansion of 0.5 in y
1.669 * [backup-simplify]: Simplify 0.5 into 0.5
1.669 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.669 * [taylor]: Taking taylor expansion of y in y
1.669 * [backup-simplify]: Simplify 0 into 0
1.669 * [backup-simplify]: Simplify 1 into 1
1.669 * [backup-simplify]: Simplify (/ 1 1) into 1
1.670 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.670 * [backup-simplify]: Simplify 0.5 into 0.5
1.670 * [backup-simplify]: Simplify 0.5 into 0.5
1.670 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.671 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.671 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
1.672 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 (/ 1 y))) into 0
1.672 * [backup-simplify]: Simplify (+ 0 0) into 0
1.672 * [taylor]: Taking taylor expansion of 0 in y
1.672 * [backup-simplify]: Simplify 0 into 0
1.673 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.673 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.673 * [backup-simplify]: Simplify 0 into 0
1.673 * [backup-simplify]: Simplify 0 into 0
1.674 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.675 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
1.675 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
1.675 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 (/ 1 y)))) into 0
1.676 * [backup-simplify]: Simplify (+ 0 0) into 0
1.676 * [taylor]: Taking taylor expansion of 0 in y
1.676 * [backup-simplify]: Simplify 0 into 0
1.676 * [backup-simplify]: Simplify 0 into 0
1.676 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.677 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.677 * [backup-simplify]: Simplify 0 into 0
1.677 * [backup-simplify]: Simplify 0 into 0
1.678 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.679 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
1.679 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) into 0
1.680 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 y))))) into 0
1.680 * [backup-simplify]: Simplify (+ 0 0) into 0
1.680 * [taylor]: Taking taylor expansion of 0 in y
1.680 * [backup-simplify]: Simplify 0 into 0
1.680 * [backup-simplify]: Simplify 0 into 0
1.681 * [backup-simplify]: Simplify (+ (* 0.5 (* 1 (/ 1 (/ 1 x)))) (* 0.5 (* (/ 1 (/ 1 y)) 1))) into (+ (* 0.5 x) (* 0.5 y))
1.681 * [backup-simplify]: Simplify (+ (/ 1 (- x)) (/ (- (/ 1 (- y)) (/ 1 (- x))) 2.0)) into (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))))
1.681 * [approximate]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in (x y) around 0
1.681 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in y
1.681 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in y
1.681 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
1.681 * [taylor]: Taking taylor expansion of 0.5 in y
1.681 * [backup-simplify]: Simplify 0.5 into 0.5
1.681 * [taylor]: Taking taylor expansion of (/ 1 x) in y
1.681 * [taylor]: Taking taylor expansion of x in y
1.681 * [backup-simplify]: Simplify x into x
1.681 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
1.681 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.681 * [taylor]: Taking taylor expansion of 0.5 in y
1.681 * [backup-simplify]: Simplify 0.5 into 0.5
1.681 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.681 * [taylor]: Taking taylor expansion of y in y
1.681 * [backup-simplify]: Simplify 0 into 0
1.681 * [backup-simplify]: Simplify 1 into 1
1.681 * [backup-simplify]: Simplify (/ 1 1) into 1
1.682 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in x
1.682 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
1.682 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.682 * [taylor]: Taking taylor expansion of 0.5 in x
1.682 * [backup-simplify]: Simplify 0.5 into 0.5
1.682 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.682 * [taylor]: Taking taylor expansion of x in x
1.682 * [backup-simplify]: Simplify 0 into 0
1.682 * [backup-simplify]: Simplify 1 into 1
1.682 * [backup-simplify]: Simplify (/ 1 1) into 1
1.682 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
1.682 * [taylor]: Taking taylor expansion of 0.5 in x
1.682 * [backup-simplify]: Simplify 0.5 into 0.5
1.682 * [taylor]: Taking taylor expansion of (/ 1 y) in x
1.682 * [taylor]: Taking taylor expansion of y in x
1.682 * [backup-simplify]: Simplify y into y
1.682 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
1.682 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in x
1.682 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
1.682 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.682 * [taylor]: Taking taylor expansion of 0.5 in x
1.682 * [backup-simplify]: Simplify 0.5 into 0.5
1.682 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.682 * [taylor]: Taking taylor expansion of x in x
1.682 * [backup-simplify]: Simplify 0 into 0
1.682 * [backup-simplify]: Simplify 1 into 1
1.683 * [backup-simplify]: Simplify (/ 1 1) into 1
1.683 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
1.683 * [taylor]: Taking taylor expansion of 0.5 in x
1.683 * [backup-simplify]: Simplify 0.5 into 0.5
1.683 * [taylor]: Taking taylor expansion of (/ 1 y) in x
1.683 * [taylor]: Taking taylor expansion of y in x
1.683 * [backup-simplify]: Simplify y into y
1.683 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
1.683 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.684 * [backup-simplify]: Simplify (+ 0.5 0) into 0.5
1.684 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.684 * [taylor]: Taking taylor expansion of (- 0.5) in y
1.684 * [taylor]: Taking taylor expansion of 0.5 in y
1.684 * [backup-simplify]: Simplify 0.5 into 0.5
1.684 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.685 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.685 * [backup-simplify]: Simplify (* 0.5 (/ 1 y)) into (/ 0.5 y)
1.685 * [backup-simplify]: Simplify (+ 0 (/ 0.5 y)) into (* 0.5 (/ 1 y))
1.685 * [backup-simplify]: Simplify (- (* 0.5 (/ 1 y))) into (- (* 0.5 (/ 1 y)))
1.685 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y))) in y
1.685 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.685 * [taylor]: Taking taylor expansion of 0.5 in y
1.685 * [backup-simplify]: Simplify 0.5 into 0.5
1.685 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.685 * [taylor]: Taking taylor expansion of y in y
1.685 * [backup-simplify]: Simplify 0 into 0
1.685 * [backup-simplify]: Simplify 1 into 1
1.686 * [backup-simplify]: Simplify (/ 1 1) into 1
1.686 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.686 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.687 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.687 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.687 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.688 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.689 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.689 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
1.689 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 (/ 1 y))) into 0
1.689 * [backup-simplify]: Simplify (+ 0 0) into 0
1.690 * [backup-simplify]: Simplify (- 0) into 0
1.690 * [taylor]: Taking taylor expansion of 0 in y
1.690 * [backup-simplify]: Simplify 0 into 0
1.690 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.691 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.691 * [backup-simplify]: Simplify (- 0) into 0
1.691 * [backup-simplify]: Simplify 0 into 0
1.691 * [backup-simplify]: Simplify (- 0) into 0
1.691 * [backup-simplify]: Simplify 0 into 0
1.692 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.693 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
1.693 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
1.694 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 (/ 1 y)))) into 0
1.694 * [backup-simplify]: Simplify (+ 0 0) into 0
1.694 * [backup-simplify]: Simplify (- 0) into 0
1.694 * [taylor]: Taking taylor expansion of 0 in y
1.694 * [backup-simplify]: Simplify 0 into 0
1.694 * [backup-simplify]: Simplify 0 into 0
1.695 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.696 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.696 * [backup-simplify]: Simplify (- 0) into 0
1.696 * [backup-simplify]: Simplify 0 into 0
1.696 * [backup-simplify]: Simplify (- 0) into 0
1.696 * [backup-simplify]: Simplify 0 into 0
1.697 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.698 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
1.698 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) into 0
1.699 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 y))))) into 0
1.699 * [backup-simplify]: Simplify (+ 0 0) into 0
1.700 * [backup-simplify]: Simplify (- 0) into 0
1.700 * [taylor]: Taking taylor expansion of 0 in y
1.700 * [backup-simplify]: Simplify 0 into 0
1.700 * [backup-simplify]: Simplify 0 into 0
1.700 * [backup-simplify]: Simplify (+ (* (- 0.5) (* 1 (/ 1 (/ 1 (- x))))) (* (- 0.5) (* (/ 1 (/ 1 (- y))) 1))) into (+ (* 0.5 x) (* 0.5 y))
1.701 * * * [progress]: simplifying candidates
1.701 * [simplify]: Simplifying:
  (expm1 (+ x (/ (- y x) 2.0)))
  (log1p (+ x (/ (- y x) 2.0)))
  (* (exp x) (exp (/ (- 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)))
  (* (* (+ x (/ (- y x) 2.0)) (+ x (/ (- y x) 2.0))) (+ x (/ (- y x) 2.0)))
  (sqrt (+ x (/ (- y x) 2.0)))
  (sqrt (+ x (/ (- y x) 2.0)))
  (+ (pow x 3) (pow (/ (- y x) 2.0) 3))
  (+ (* x x) (- (* (/ (- y x) 2.0) (/ (- y x) 2.0)) (* x (/ (- y x) 2.0))))
  (- (* x x) (* (/ (- y x) 2.0) (/ (- y x) 2.0)))
  (- x (/ (- y x) 2.0))
  (+ x (/ (- y x) 2.0))
  (+ x (/ y 2.0))
  (+ (* 0.5 x) (* 0.5 y))
  (+ (* 0.5 x) (* 0.5 y))
  (+ (* 0.5 x) (* 0.5 y))
1.701 * * [simplify]: iteration 0: 35 enodes
1.709 * * [simplify]: iteration 1: 98 enodes
1.734 * * [simplify]: iteration 2: 269 enodes
1.822 * * [simplify]: iteration 3: 882 enodes
2.130 * * [simplify]: iteration complete: 5000 enodes
2.131 * * [simplify]: Extracting #0: cost 15 inf + 0
2.131 * * [simplify]: Extracting #1: cost 364 inf + 0
2.135 * * [simplify]: Extracting #2: cost 1522 inf + 27
2.141 * * [simplify]: Extracting #3: cost 1859 inf + 285
2.147 * * [simplify]: Extracting #4: cost 1300 inf + 7917
2.154 * * [simplify]: Extracting #5: cost 140 inf + 24863
2.164 * * [simplify]: Extracting #6: cost 0 inf + 27467
2.170 * [simplify]: Simplified to:
  (expm1 (+ x (/ (- y x) 2.0)))
  (log1p (+ x (/ (- y x) 2.0)))
  (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))
  (fma (- (/ (- y x) 2.0) x) (/ (- y x) 2.0) (* x x))
  (* (+ x (/ (- y x) 2.0)) (- x (/ (- y x) 2.0)))
  (- x (/ (- y x) 2.0))
  (+ x (/ (- y x) 2.0))
  (+ (/ y 2.0) x)
  (* 0.5 (+ y x))
  (* 0.5 (+ y x))
  (* 0.5 (+ y x))
2.170 * * * [progress]: adding candidates to table
2.248 * * [progress]: iteration 2 / 4
2.248 * * * [progress]: picking best candidate
2.251 * * * * [pick]: Picked  #<alt (λ (x y) (* 0.5 (+ y x)))>
2.251 * * * [progress]: localizing error
2.256 * * * [progress]: generating rewritten candidates
2.256 * * * [progress]: generating series expansions
2.256 * * * [progress]: simplifying candidates
2.256 * [simplify]: Simplifying:
  
2.256 * * [simplify]: iteration 0: 0 enodes
2.256 * * [simplify]: iteration complete: 0 enodes
2.256 * * [simplify]: Extracting #0: cost 0 inf + 0
2.256 * [simplify]: Simplified to:
  
2.256 * * * [progress]: adding candidates to table
2.257 * [progress]: [Phase 3 of 3] Extracting.
2.259 * [simplify]: Simplifying:
  (* 0.5 (+ y x))
2.259 * * [simplify]: iteration 0: 5 enodes
2.260 * * [simplify]: iteration 1: 7 enodes
2.260 * * [simplify]: iteration complete: 7 enodes
2.260 * * [simplify]: Extracting #0: cost 1 inf + 0
2.260 * * [simplify]: Extracting #1: cost 3 inf + 0
2.260 * * [simplify]: Extracting #2: cost 4 inf + 1
2.260 * * [simplify]: Extracting #3: cost 0 inf + 11
2.260 * [simplify]: Simplified to:
  (* (+ y x) 0.5)
2.945 * [regime-testing]: Baseline error score: 0
2.953 * [regime-testing]: Oracle error score: 0
2.953 * [regime-testing]: End program error score: 0
3.030 * [regime-testing]: Target error score: 0