52.880 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.024 * * * [progress]: [2/2] Setting up program.
0.030 * [progress]: [Phase 2 of 3] Improving.
0.030 * [simplify]: Simplifying:
  (+ x (/ (- y x) 2.0))
0.030 * * [simplify]: iteration 0: 6 enodes
0.032 * * [simplify]: iteration 1: 12 enodes
0.035 * * [simplify]: iteration 2: 19 enodes
0.038 * * [simplify]: iteration 3: 28 enodes
0.042 * * [simplify]: iteration 4: 39 enodes
0.050 * * [simplify]: iteration 5: 96 enodes
0.067 * * [simplify]: iteration 6: 221 enodes
0.145 * * [simplify]: iteration 7: 621 enodes
0.651 * * [simplify]: iteration 8: 2177 enodes
1.380 * * [simplify]: iteration complete: 5001 enodes
1.380 * * [simplify]: Extracting #0: cost 1 inf + 0
1.388 * * [simplify]: Extracting #1: cost 1630 inf + 0
1.393 * * [simplify]: Extracting #2: cost 1824 inf + 124
1.398 * * [simplify]: Extracting #3: cost 1771 inf + 2748
1.423 * * [simplify]: Extracting #4: cost 175 inf + 178173
1.464 * * [simplify]: Extracting #5: cost 0 inf + 197178
1.511 * [simplify]: Simplified to:
  (+ (/ (- y x) 2.0) x)
1.511 * * [progress]: iteration 1 / 4
1.511 * * * [progress]: picking best candidate
1.515 * * * * [pick]: Picked  #<alt (λ (x y) (+ x (/ (- y x) 2.0)))>
1.515 * * * [progress]: localizing error
1.526 * * * [progress]: generating rewritten candidates
1.526 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
1.551 * * * [progress]: generating series expansions
1.552 * * * * [progress]: [ 1 / 1 ] generating series at (2)
1.552 * [backup-simplify]: Simplify (+ x (/ (- y x) 2.0)) into (+ (* 0.5 x) (* 0.5 y))
1.552 * [approximate]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in (x y) around 0
1.552 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in y
1.552 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
1.552 * [taylor]: Taking taylor expansion of 0.5 in y
1.552 * [backup-simplify]: Simplify 0.5 into 0.5
1.552 * [taylor]: Taking taylor expansion of x in y
1.552 * [backup-simplify]: Simplify x into x
1.552 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
1.552 * [taylor]: Taking taylor expansion of 0.5 in y
1.552 * [backup-simplify]: Simplify 0.5 into 0.5
1.552 * [taylor]: Taking taylor expansion of y in y
1.552 * [backup-simplify]: Simplify 0 into 0
1.552 * [backup-simplify]: Simplify 1 into 1
1.552 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
1.552 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
1.552 * [taylor]: Taking taylor expansion of 0.5 in x
1.552 * [backup-simplify]: Simplify 0.5 into 0.5
1.552 * [taylor]: Taking taylor expansion of x in x
1.552 * [backup-simplify]: Simplify 0 into 0
1.552 * [backup-simplify]: Simplify 1 into 1
1.552 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
1.552 * [taylor]: Taking taylor expansion of 0.5 in x
1.552 * [backup-simplify]: Simplify 0.5 into 0.5
1.553 * [taylor]: Taking taylor expansion of y in x
1.553 * [backup-simplify]: Simplify y into y
1.553 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
1.553 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
1.553 * [taylor]: Taking taylor expansion of 0.5 in x
1.553 * [backup-simplify]: Simplify 0.5 into 0.5
1.553 * [taylor]: Taking taylor expansion of x in x
1.553 * [backup-simplify]: Simplify 0 into 0
1.553 * [backup-simplify]: Simplify 1 into 1
1.553 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
1.553 * [taylor]: Taking taylor expansion of 0.5 in x
1.553 * [backup-simplify]: Simplify 0.5 into 0.5
1.553 * [taylor]: Taking taylor expansion of y in x
1.553 * [backup-simplify]: Simplify y into y
1.554 * [backup-simplify]: Simplify (* 0.5 0) into 0
1.554 * [backup-simplify]: Simplify (* 0.5 y) into (* 0.5 y)
1.554 * [backup-simplify]: Simplify (+ 0 (* 0.5 y)) into (* 0.5 y)
1.554 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
1.554 * [taylor]: Taking taylor expansion of 0.5 in y
1.554 * [backup-simplify]: Simplify 0.5 into 0.5
1.554 * [taylor]: Taking taylor expansion of y in y
1.554 * [backup-simplify]: Simplify 0 into 0
1.554 * [backup-simplify]: Simplify 1 into 1
1.554 * [backup-simplify]: Simplify (* 0.5 0) into 0
1.554 * [backup-simplify]: Simplify 0 into 0
1.555 * [backup-simplify]: Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
1.556 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 y)) into 0
1.556 * [backup-simplify]: Simplify (+ 0.5 0) into 0.5
1.556 * [taylor]: Taking taylor expansion of 0.5 in y
1.556 * [backup-simplify]: Simplify 0.5 into 0.5
1.556 * [backup-simplify]: Simplify 0.5 into 0.5
1.557 * [backup-simplify]: Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
1.558 * [backup-simplify]: Simplify 0.5 into 0.5
1.558 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 1) (* 0 0))) into 0
1.559 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 y))) into 0
1.559 * [backup-simplify]: Simplify (+ 0 0) into 0
1.559 * [taylor]: Taking taylor expansion of 0 in y
1.559 * [backup-simplify]: Simplify 0 into 0
1.559 * [backup-simplify]: Simplify 0 into 0
1.559 * [backup-simplify]: Simplify 0 into 0
1.560 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 1) (* 0 0))) into 0
1.560 * [backup-simplify]: Simplify 0 into 0
1.561 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 1) (* 0 0)))) into 0
1.562 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))) into 0
1.562 * [backup-simplify]: Simplify (+ 0 0) into 0
1.563 * [taylor]: Taking taylor expansion of 0 in y
1.563 * [backup-simplify]: Simplify 0 into 0
1.563 * [backup-simplify]: Simplify 0 into 0
1.563 * [backup-simplify]: Simplify 0 into 0
1.563 * [backup-simplify]: Simplify 0 into 0
1.563 * [backup-simplify]: Simplify (+ (* 0.5 (* y 1)) (* 0.5 (* 1 x))) into (+ (* 0.5 x) (* 0.5 y))
1.563 * [backup-simplify]: Simplify (+ (/ 1 x) (/ (- (/ 1 y) (/ 1 x)) 2.0)) into (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))
1.563 * [approximate]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in (x y) around 0
1.563 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in y
1.563 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
1.563 * [taylor]: Taking taylor expansion of 0.5 in y
1.563 * [backup-simplify]: Simplify 0.5 into 0.5
1.563 * [taylor]: Taking taylor expansion of (/ 1 x) in y
1.563 * [taylor]: Taking taylor expansion of x in y
1.563 * [backup-simplify]: Simplify x into x
1.563 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
1.563 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.563 * [taylor]: Taking taylor expansion of 0.5 in y
1.563 * [backup-simplify]: Simplify 0.5 into 0.5
1.563 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.563 * [taylor]: Taking taylor expansion of y in y
1.563 * [backup-simplify]: Simplify 0 into 0
1.563 * [backup-simplify]: Simplify 1 into 1
1.564 * [backup-simplify]: Simplify (/ 1 1) into 1
1.564 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
1.564 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.564 * [taylor]: Taking taylor expansion of 0.5 in x
1.564 * [backup-simplify]: Simplify 0.5 into 0.5
1.564 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.564 * [taylor]: Taking taylor expansion of x in x
1.564 * [backup-simplify]: Simplify 0 into 0
1.564 * [backup-simplify]: Simplify 1 into 1
1.564 * [backup-simplify]: Simplify (/ 1 1) into 1
1.564 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
1.564 * [taylor]: Taking taylor expansion of 0.5 in x
1.564 * [backup-simplify]: Simplify 0.5 into 0.5
1.564 * [taylor]: Taking taylor expansion of (/ 1 y) in x
1.564 * [taylor]: Taking taylor expansion of y in x
1.564 * [backup-simplify]: Simplify y into y
1.564 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
1.564 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
1.564 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.564 * [taylor]: Taking taylor expansion of 0.5 in x
1.564 * [backup-simplify]: Simplify 0.5 into 0.5
1.564 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.564 * [taylor]: Taking taylor expansion of x in x
1.564 * [backup-simplify]: Simplify 0 into 0
1.565 * [backup-simplify]: Simplify 1 into 1
1.565 * [backup-simplify]: Simplify (/ 1 1) into 1
1.565 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
1.565 * [taylor]: Taking taylor expansion of 0.5 in x
1.565 * [backup-simplify]: Simplify 0.5 into 0.5
1.565 * [taylor]: Taking taylor expansion of (/ 1 y) in x
1.565 * [taylor]: Taking taylor expansion of y in x
1.565 * [backup-simplify]: Simplify y into y
1.565 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
1.565 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.566 * [backup-simplify]: Simplify (+ 0.5 0) into 0.5
1.566 * [taylor]: Taking taylor expansion of 0.5 in y
1.566 * [backup-simplify]: Simplify 0.5 into 0.5
1.566 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.567 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.567 * [backup-simplify]: Simplify (* 0.5 (/ 1 y)) into (/ 0.5 y)
1.567 * [backup-simplify]: Simplify (+ 0 (/ 0.5 y)) into (* 0.5 (/ 1 y))
1.567 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.567 * [taylor]: Taking taylor expansion of 0.5 in y
1.567 * [backup-simplify]: Simplify 0.5 into 0.5
1.567 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.567 * [taylor]: Taking taylor expansion of y in y
1.567 * [backup-simplify]: Simplify 0 into 0
1.567 * [backup-simplify]: Simplify 1 into 1
1.568 * [backup-simplify]: Simplify (/ 1 1) into 1
1.568 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.568 * [backup-simplify]: Simplify 0.5 into 0.5
1.568 * [backup-simplify]: Simplify 0.5 into 0.5
1.569 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.570 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.570 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
1.570 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 (/ 1 y))) into 0
1.570 * [backup-simplify]: Simplify (+ 0 0) into 0
1.570 * [taylor]: Taking taylor expansion of 0 in y
1.570 * [backup-simplify]: Simplify 0 into 0
1.571 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.572 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.572 * [backup-simplify]: Simplify 0 into 0
1.572 * [backup-simplify]: Simplify 0 into 0
1.572 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.573 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
1.573 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
1.574 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 (/ 1 y)))) into 0
1.575 * [backup-simplify]: Simplify (+ 0 0) into 0
1.575 * [taylor]: Taking taylor expansion of 0 in y
1.575 * [backup-simplify]: Simplify 0 into 0
1.575 * [backup-simplify]: Simplify 0 into 0
1.575 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.576 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.576 * [backup-simplify]: Simplify 0 into 0
1.576 * [backup-simplify]: Simplify 0 into 0
1.577 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.578 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
1.578 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) into 0
1.579 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 y))))) into 0
1.579 * [backup-simplify]: Simplify (+ 0 0) into 0
1.579 * [taylor]: Taking taylor expansion of 0 in y
1.579 * [backup-simplify]: Simplify 0 into 0
1.579 * [backup-simplify]: Simplify 0 into 0
1.580 * [backup-simplify]: Simplify (+ (* 0.5 (* 1 (/ 1 (/ 1 x)))) (* 0.5 (* (/ 1 (/ 1 y)) 1))) into (+ (* 0.5 x) (* 0.5 y))
1.580 * [backup-simplify]: Simplify (+ (/ 1 (- x)) (/ (- (/ 1 (- y)) (/ 1 (- x))) 2.0)) into (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))))
1.580 * [approximate]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in (x y) around 0
1.580 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in y
1.580 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in y
1.580 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
1.580 * [taylor]: Taking taylor expansion of 0.5 in y
1.580 * [backup-simplify]: Simplify 0.5 into 0.5
1.580 * [taylor]: Taking taylor expansion of (/ 1 x) in y
1.580 * [taylor]: Taking taylor expansion of x in y
1.580 * [backup-simplify]: Simplify x into x
1.580 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
1.580 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.580 * [taylor]: Taking taylor expansion of 0.5 in y
1.580 * [backup-simplify]: Simplify 0.5 into 0.5
1.580 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.580 * [taylor]: Taking taylor expansion of y in y
1.580 * [backup-simplify]: Simplify 0 into 0
1.580 * [backup-simplify]: Simplify 1 into 1
1.581 * [backup-simplify]: Simplify (/ 1 1) into 1
1.581 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in x
1.581 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
1.581 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.581 * [taylor]: Taking taylor expansion of 0.5 in x
1.581 * [backup-simplify]: Simplify 0.5 into 0.5
1.581 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.581 * [taylor]: Taking taylor expansion of x in x
1.581 * [backup-simplify]: Simplify 0 into 0
1.581 * [backup-simplify]: Simplify 1 into 1
1.581 * [backup-simplify]: Simplify (/ 1 1) into 1
1.581 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
1.581 * [taylor]: Taking taylor expansion of 0.5 in x
1.581 * [backup-simplify]: Simplify 0.5 into 0.5
1.581 * [taylor]: Taking taylor expansion of (/ 1 y) in x
1.581 * [taylor]: Taking taylor expansion of y in x
1.581 * [backup-simplify]: Simplify y into y
1.581 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
1.581 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in x
1.581 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
1.581 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.581 * [taylor]: Taking taylor expansion of 0.5 in x
1.581 * [backup-simplify]: Simplify 0.5 into 0.5
1.582 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.582 * [taylor]: Taking taylor expansion of x in x
1.582 * [backup-simplify]: Simplify 0 into 0
1.582 * [backup-simplify]: Simplify 1 into 1
1.582 * [backup-simplify]: Simplify (/ 1 1) into 1
1.582 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
1.582 * [taylor]: Taking taylor expansion of 0.5 in x
1.582 * [backup-simplify]: Simplify 0.5 into 0.5
1.582 * [taylor]: Taking taylor expansion of (/ 1 y) in x
1.582 * [taylor]: Taking taylor expansion of y in x
1.582 * [backup-simplify]: Simplify y into y
1.582 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
1.582 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.583 * [backup-simplify]: Simplify (+ 0.5 0) into 0.5
1.583 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.583 * [taylor]: Taking taylor expansion of (- 0.5) in y
1.583 * [taylor]: Taking taylor expansion of 0.5 in y
1.583 * [backup-simplify]: Simplify 0.5 into 0.5
1.584 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.584 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.584 * [backup-simplify]: Simplify (* 0.5 (/ 1 y)) into (/ 0.5 y)
1.585 * [backup-simplify]: Simplify (+ 0 (/ 0.5 y)) into (* 0.5 (/ 1 y))
1.585 * [backup-simplify]: Simplify (- (* 0.5 (/ 1 y))) into (- (* 0.5 (/ 1 y)))
1.585 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y))) in y
1.585 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.585 * [taylor]: Taking taylor expansion of 0.5 in y
1.585 * [backup-simplify]: Simplify 0.5 into 0.5
1.585 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.585 * [taylor]: Taking taylor expansion of y in y
1.585 * [backup-simplify]: Simplify 0 into 0
1.585 * [backup-simplify]: Simplify 1 into 1
1.585 * [backup-simplify]: Simplify (/ 1 1) into 1
1.585 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.586 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.586 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.586 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.587 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.587 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.588 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.588 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
1.589 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 (/ 1 y))) into 0
1.589 * [backup-simplify]: Simplify (+ 0 0) into 0
1.589 * [backup-simplify]: Simplify (- 0) into 0
1.589 * [taylor]: Taking taylor expansion of 0 in y
1.589 * [backup-simplify]: Simplify 0 into 0
1.590 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.591 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.591 * [backup-simplify]: Simplify (- 0) into 0
1.591 * [backup-simplify]: Simplify 0 into 0
1.591 * [backup-simplify]: Simplify (- 0) into 0
1.591 * [backup-simplify]: Simplify 0 into 0
1.592 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.593 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
1.593 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
1.594 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 (/ 1 y)))) into 0
1.594 * [backup-simplify]: Simplify (+ 0 0) into 0
1.594 * [backup-simplify]: Simplify (- 0) into 0
1.594 * [taylor]: Taking taylor expansion of 0 in y
1.594 * [backup-simplify]: Simplify 0 into 0
1.594 * [backup-simplify]: Simplify 0 into 0
1.595 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.596 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.596 * [backup-simplify]: Simplify (- 0) into 0
1.596 * [backup-simplify]: Simplify 0 into 0
1.596 * [backup-simplify]: Simplify (- 0) into 0
1.597 * [backup-simplify]: Simplify 0 into 0
1.597 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.598 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
1.598 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) into 0
1.599 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 y))))) into 0
1.600 * [backup-simplify]: Simplify (+ 0 0) into 0
1.600 * [backup-simplify]: Simplify (- 0) into 0
1.600 * [taylor]: Taking taylor expansion of 0 in y
1.600 * [backup-simplify]: Simplify 0 into 0
1.600 * [backup-simplify]: Simplify 0 into 0
1.601 * [backup-simplify]: Simplify (+ (* (- 0.5) (* 1 (/ 1 (/ 1 (- x))))) (* (- 0.5) (* (/ 1 (/ 1 (- y))) 1))) into (+ (* 0.5 x) (* 0.5 y))
1.601 * * * [progress]: simplifying candidates
1.601 * [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))
1.602 * * [simplify]: iteration 0: 35 enodes
1.611 * * [simplify]: iteration 1: 98 enodes
1.642 * * [simplify]: iteration 2: 269 enodes
1.739 * * [simplify]: iteration 3: 882 enodes
2.058 * * [simplify]: iteration complete: 5000 enodes
2.058 * * [simplify]: Extracting #0: cost 15 inf + 0
2.059 * * [simplify]: Extracting #1: cost 364 inf + 0
2.063 * * [simplify]: Extracting #2: cost 1522 inf + 369
2.068 * * [simplify]: Extracting #3: cost 1859 inf + 5221
2.097 * * [simplify]: Extracting #4: cost 1300 inf + 140003
2.171 * * [simplify]: Extracting #5: cost 140 inf + 408674
2.272 * * [simplify]: Extracting #6: cost 0 inf + 449488
2.397 * [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)))
  (* (* (+ 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)))
  (fma x (* x x) (* (* (/ (- y x) 2.0) (/ (- y x) 2.0)) (/ (- y x) 2.0)))
  (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))
2.398 * * * [progress]: adding candidates to table
2.490 * * [progress]: iteration 2 / 4
2.490 * * * [progress]: picking best candidate
2.494 * * * * [pick]: Picked  #<alt (λ (x y) (* 0.5 (+ y x)))>
2.494 * * * [progress]: localizing error
2.500 * * * [progress]: generating rewritten candidates
2.500 * * * [progress]: generating series expansions
2.500 * * * [progress]: simplifying candidates
2.500 * [simplify]: Simplifying:
  
2.500 * * [simplify]: iteration 0: 0 enodes
2.500 * * [simplify]: iteration complete: 0 enodes
2.500 * * [simplify]: Extracting #0: cost 0 inf + 0
2.500 * [simplify]: Simplified to:
  
2.500 * * * [progress]: adding candidates to table
2.500 * [progress]: [Phase 3 of 3] Extracting.
2.504 * [simplify]: Simplifying:
  (* 0.5 (+ y x))
2.504 * * [simplify]: iteration 0: 5 enodes
2.504 * * [simplify]: iteration 1: 7 enodes
2.504 * * [simplify]: iteration complete: 7 enodes
2.504 * * [simplify]: Extracting #0: cost 1 inf + 0
2.504 * * [simplify]: Extracting #1: cost 3 inf + 0
2.504 * * [simplify]: Extracting #2: cost 4 inf + 1
2.504 * * [simplify]: Extracting #3: cost 0 inf + 128
2.505 * [simplify]: Simplified to:
  (* (+ y x) 0.5)
3.418 * [regime-testing]: Baseline error score: 0
3.429 * [regime-testing]: Oracle error score: 0
3.429 * [regime-testing]: End program error score: 0
3.513 * [regime-testing]: Target error score: 0