57.125 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.014 * * * [progress]: [2/2] Setting up program.
0.017 * [progress]: [Phase 2 of 3] Improving.
0.017 * [simplify]: Simplifying:
  (+ x (/ (- y x) 2.0))
0.017 * * [simplify]: iteration 0: 6 enodes
0.018 * * [simplify]: iteration 1: 12 enodes
0.021 * * [simplify]: iteration 2: 19 enodes
0.023 * * [simplify]: iteration 3: 28 enodes
0.026 * * [simplify]: iteration 4: 39 enodes
0.031 * * [simplify]: iteration 5: 96 enodes
0.044 * * [simplify]: iteration 6: 221 enodes
0.094 * * [simplify]: iteration 7: 621 enodes
0.518 * * [simplify]: iteration 8: 2177 enodes
1.277 * * [simplify]: iteration complete: 5001 enodes
1.277 * * [simplify]: Extracting #0: cost 1 inf + 0
1.281 * * [simplify]: Extracting #1: cost 1630 inf + 0
1.287 * * [simplify]: Extracting #2: cost 1824 inf + 7
1.294 * * [simplify]: Extracting #3: cost 1771 inf + 135
1.306 * * [simplify]: Extracting #4: cost 175 inf + 9625
1.312 * * [simplify]: Extracting #5: cost 0 inf + 10664
1.318 * [simplify]: Simplified to:
  (+ (/ (- y x) 2.0) x)
1.324 * * [progress]: iteration 1 / 4
1.324 * * * [progress]: picking best candidate
1.328 * * * * [pick]: Picked  #<alt (λ (x y) (+ x (/ (- y x) 2.0)))>
1.328 * * * [progress]: localizing error
1.338 * * * [progress]: generating rewritten candidates
1.338 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
1.363 * * * [progress]: generating series expansions
1.363 * * * * [progress]: [ 1 / 1 ] generating series at (2)
1.363 * [backup-simplify]: Simplify (+ x (/ (- y x) 2.0)) into (+ (* 0.5 x) (* 0.5 y))
1.363 * [approximate]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in (x y) around 0
1.364 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in y
1.364 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
1.364 * [taylor]: Taking taylor expansion of 0.5 in y
1.364 * [backup-simplify]: Simplify 0.5 into 0.5
1.364 * [taylor]: Taking taylor expansion of x in y
1.364 * [backup-simplify]: Simplify x into x
1.364 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
1.364 * [taylor]: Taking taylor expansion of 0.5 in y
1.364 * [backup-simplify]: Simplify 0.5 into 0.5
1.364 * [taylor]: Taking taylor expansion of y in y
1.364 * [backup-simplify]: Simplify 0 into 0
1.364 * [backup-simplify]: Simplify 1 into 1
1.364 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
1.364 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
1.364 * [taylor]: Taking taylor expansion of 0.5 in x
1.364 * [backup-simplify]: Simplify 0.5 into 0.5
1.364 * [taylor]: Taking taylor expansion of x in x
1.364 * [backup-simplify]: Simplify 0 into 0
1.364 * [backup-simplify]: Simplify 1 into 1
1.364 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
1.364 * [taylor]: Taking taylor expansion of 0.5 in x
1.364 * [backup-simplify]: Simplify 0.5 into 0.5
1.364 * [taylor]: Taking taylor expansion of y in x
1.364 * [backup-simplify]: Simplify y into y
1.364 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
1.364 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
1.364 * [taylor]: Taking taylor expansion of 0.5 in x
1.364 * [backup-simplify]: Simplify 0.5 into 0.5
1.364 * [taylor]: Taking taylor expansion of x in x
1.364 * [backup-simplify]: Simplify 0 into 0
1.364 * [backup-simplify]: Simplify 1 into 1
1.364 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
1.364 * [taylor]: Taking taylor expansion of 0.5 in x
1.364 * [backup-simplify]: Simplify 0.5 into 0.5
1.364 * [taylor]: Taking taylor expansion of y in x
1.364 * [backup-simplify]: Simplify y into y
1.365 * [backup-simplify]: Simplify (* 0.5 0) into 0
1.365 * [backup-simplify]: Simplify (* 0.5 y) into (* 0.5 y)
1.365 * [backup-simplify]: Simplify (+ 0 (* 0.5 y)) into (* 0.5 y)
1.365 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
1.365 * [taylor]: Taking taylor expansion of 0.5 in y
1.365 * [backup-simplify]: Simplify 0.5 into 0.5
1.365 * [taylor]: Taking taylor expansion of y in y
1.365 * [backup-simplify]: Simplify 0 into 0
1.365 * [backup-simplify]: Simplify 1 into 1
1.366 * [backup-simplify]: Simplify (* 0.5 0) into 0
1.366 * [backup-simplify]: Simplify 0 into 0
1.367 * [backup-simplify]: Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
1.367 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 y)) into 0
1.368 * [backup-simplify]: Simplify (+ 0.5 0) into 0.5
1.368 * [taylor]: Taking taylor expansion of 0.5 in y
1.368 * [backup-simplify]: Simplify 0.5 into 0.5
1.368 * [backup-simplify]: Simplify 0.5 into 0.5
1.369 * [backup-simplify]: Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
1.369 * [backup-simplify]: Simplify 0.5 into 0.5
1.369 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 1) (* 0 0))) into 0
1.370 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 y))) into 0
1.370 * [backup-simplify]: Simplify (+ 0 0) into 0
1.370 * [taylor]: Taking taylor expansion of 0 in y
1.370 * [backup-simplify]: Simplify 0 into 0
1.370 * [backup-simplify]: Simplify 0 into 0
1.370 * [backup-simplify]: Simplify 0 into 0
1.371 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 1) (* 0 0))) into 0
1.371 * [backup-simplify]: Simplify 0 into 0
1.372 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 1) (* 0 0)))) into 0
1.372 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))) into 0
1.372 * [backup-simplify]: Simplify (+ 0 0) into 0
1.373 * [taylor]: Taking taylor expansion of 0 in y
1.373 * [backup-simplify]: Simplify 0 into 0
1.373 * [backup-simplify]: Simplify 0 into 0
1.373 * [backup-simplify]: Simplify 0 into 0
1.373 * [backup-simplify]: Simplify 0 into 0
1.373 * [backup-simplify]: Simplify (+ (* 0.5 (* y 1)) (* 0.5 (* 1 x))) into (+ (* 0.5 x) (* 0.5 y))
1.373 * [backup-simplify]: Simplify (+ (/ 1 x) (/ (- (/ 1 y) (/ 1 x)) 2.0)) into (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))
1.373 * [approximate]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in (x y) around 0
1.373 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in y
1.373 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
1.373 * [taylor]: Taking taylor expansion of 0.5 in y
1.373 * [backup-simplify]: Simplify 0.5 into 0.5
1.373 * [taylor]: Taking taylor expansion of (/ 1 x) in y
1.373 * [taylor]: Taking taylor expansion of x in y
1.373 * [backup-simplify]: Simplify x into x
1.373 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
1.373 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.373 * [taylor]: Taking taylor expansion of 0.5 in y
1.373 * [backup-simplify]: Simplify 0.5 into 0.5
1.373 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.373 * [taylor]: Taking taylor expansion of y in y
1.373 * [backup-simplify]: Simplify 0 into 0
1.373 * [backup-simplify]: Simplify 1 into 1
1.374 * [backup-simplify]: Simplify (/ 1 1) into 1
1.374 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
1.374 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.374 * [taylor]: Taking taylor expansion of 0.5 in x
1.374 * [backup-simplify]: Simplify 0.5 into 0.5
1.374 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.374 * [taylor]: Taking taylor expansion of x in x
1.374 * [backup-simplify]: Simplify 0 into 0
1.374 * [backup-simplify]: Simplify 1 into 1
1.374 * [backup-simplify]: Simplify (/ 1 1) into 1
1.374 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
1.374 * [taylor]: Taking taylor expansion of 0.5 in x
1.374 * [backup-simplify]: Simplify 0.5 into 0.5
1.374 * [taylor]: Taking taylor expansion of (/ 1 y) in x
1.374 * [taylor]: Taking taylor expansion of y in x
1.374 * [backup-simplify]: Simplify y into y
1.374 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
1.374 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
1.374 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.374 * [taylor]: Taking taylor expansion of 0.5 in x
1.374 * [backup-simplify]: Simplify 0.5 into 0.5
1.374 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.374 * [taylor]: Taking taylor expansion of x in x
1.375 * [backup-simplify]: Simplify 0 into 0
1.375 * [backup-simplify]: Simplify 1 into 1
1.375 * [backup-simplify]: Simplify (/ 1 1) into 1
1.375 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
1.375 * [taylor]: Taking taylor expansion of 0.5 in x
1.375 * [backup-simplify]: Simplify 0.5 into 0.5
1.375 * [taylor]: Taking taylor expansion of (/ 1 y) in x
1.375 * [taylor]: Taking taylor expansion of y in x
1.375 * [backup-simplify]: Simplify y into y
1.375 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
1.375 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.376 * [backup-simplify]: Simplify (+ 0.5 0) into 0.5
1.376 * [taylor]: Taking taylor expansion of 0.5 in y
1.376 * [backup-simplify]: Simplify 0.5 into 0.5
1.376 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.377 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.377 * [backup-simplify]: Simplify (* 0.5 (/ 1 y)) into (/ 0.5 y)
1.377 * [backup-simplify]: Simplify (+ 0 (/ 0.5 y)) into (* 0.5 (/ 1 y))
1.377 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.377 * [taylor]: Taking taylor expansion of 0.5 in y
1.377 * [backup-simplify]: Simplify 0.5 into 0.5
1.377 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.377 * [taylor]: Taking taylor expansion of y in y
1.377 * [backup-simplify]: Simplify 0 into 0
1.377 * [backup-simplify]: Simplify 1 into 1
1.378 * [backup-simplify]: Simplify (/ 1 1) into 1
1.378 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.378 * [backup-simplify]: Simplify 0.5 into 0.5
1.378 * [backup-simplify]: Simplify 0.5 into 0.5
1.379 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.380 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.380 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
1.380 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 (/ 1 y))) into 0
1.380 * [backup-simplify]: Simplify (+ 0 0) into 0
1.380 * [taylor]: Taking taylor expansion of 0 in y
1.380 * [backup-simplify]: Simplify 0 into 0
1.381 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.382 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.382 * [backup-simplify]: Simplify 0 into 0
1.382 * [backup-simplify]: Simplify 0 into 0
1.382 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.383 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
1.383 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
1.384 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 (/ 1 y)))) into 0
1.384 * [backup-simplify]: Simplify (+ 0 0) into 0
1.384 * [taylor]: Taking taylor expansion of 0 in y
1.384 * [backup-simplify]: Simplify 0 into 0
1.384 * [backup-simplify]: Simplify 0 into 0
1.385 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.386 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.386 * [backup-simplify]: Simplify 0 into 0
1.386 * [backup-simplify]: Simplify 0 into 0
1.387 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.388 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
1.388 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) into 0
1.389 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 y))))) into 0
1.389 * [backup-simplify]: Simplify (+ 0 0) into 0
1.389 * [taylor]: Taking taylor expansion of 0 in y
1.389 * [backup-simplify]: Simplify 0 into 0
1.389 * [backup-simplify]: Simplify 0 into 0
1.389 * [backup-simplify]: Simplify (+ (* 0.5 (* 1 (/ 1 (/ 1 x)))) (* 0.5 (* (/ 1 (/ 1 y)) 1))) into (+ (* 0.5 x) (* 0.5 y))
1.390 * [backup-simplify]: Simplify (+ (/ 1 (- x)) (/ (- (/ 1 (- y)) (/ 1 (- x))) 2.0)) into (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))))
1.390 * [approximate]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in (x y) around 0
1.390 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in y
1.390 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in y
1.390 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
1.390 * [taylor]: Taking taylor expansion of 0.5 in y
1.390 * [backup-simplify]: Simplify 0.5 into 0.5
1.390 * [taylor]: Taking taylor expansion of (/ 1 x) in y
1.390 * [taylor]: Taking taylor expansion of x in y
1.390 * [backup-simplify]: Simplify x into x
1.390 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
1.390 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.390 * [taylor]: Taking taylor expansion of 0.5 in y
1.390 * [backup-simplify]: Simplify 0.5 into 0.5
1.390 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.390 * [taylor]: Taking taylor expansion of y in y
1.390 * [backup-simplify]: Simplify 0 into 0
1.390 * [backup-simplify]: Simplify 1 into 1
1.390 * [backup-simplify]: Simplify (/ 1 1) into 1
1.390 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in x
1.390 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
1.391 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.391 * [taylor]: Taking taylor expansion of 0.5 in x
1.391 * [backup-simplify]: Simplify 0.5 into 0.5
1.391 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.391 * [taylor]: Taking taylor expansion of x in x
1.391 * [backup-simplify]: Simplify 0 into 0
1.391 * [backup-simplify]: Simplify 1 into 1
1.391 * [backup-simplify]: Simplify (/ 1 1) into 1
1.391 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
1.391 * [taylor]: Taking taylor expansion of 0.5 in x
1.391 * [backup-simplify]: Simplify 0.5 into 0.5
1.391 * [taylor]: Taking taylor expansion of (/ 1 y) in x
1.391 * [taylor]: Taking taylor expansion of y in x
1.391 * [backup-simplify]: Simplify y into y
1.391 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
1.391 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in x
1.391 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
1.391 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
1.391 * [taylor]: Taking taylor expansion of 0.5 in x
1.391 * [backup-simplify]: Simplify 0.5 into 0.5
1.391 * [taylor]: Taking taylor expansion of (/ 1 x) in x
1.391 * [taylor]: Taking taylor expansion of x in x
1.391 * [backup-simplify]: Simplify 0 into 0
1.391 * [backup-simplify]: Simplify 1 into 1
1.392 * [backup-simplify]: Simplify (/ 1 1) into 1
1.392 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
1.392 * [taylor]: Taking taylor expansion of 0.5 in x
1.392 * [backup-simplify]: Simplify 0.5 into 0.5
1.392 * [taylor]: Taking taylor expansion of (/ 1 y) in x
1.392 * [taylor]: Taking taylor expansion of y in x
1.392 * [backup-simplify]: Simplify y into y
1.392 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
1.395 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.396 * [backup-simplify]: Simplify (+ 0.5 0) into 0.5
1.396 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.396 * [taylor]: Taking taylor expansion of (- 0.5) in y
1.396 * [taylor]: Taking taylor expansion of 0.5 in y
1.396 * [backup-simplify]: Simplify 0.5 into 0.5
1.397 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.397 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.397 * [backup-simplify]: Simplify (* 0.5 (/ 1 y)) into (/ 0.5 y)
1.397 * [backup-simplify]: Simplify (+ 0 (/ 0.5 y)) into (* 0.5 (/ 1 y))
1.398 * [backup-simplify]: Simplify (- (* 0.5 (/ 1 y))) into (- (* 0.5 (/ 1 y)))
1.398 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y))) in y
1.398 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
1.398 * [taylor]: Taking taylor expansion of 0.5 in y
1.398 * [backup-simplify]: Simplify 0.5 into 0.5
1.398 * [taylor]: Taking taylor expansion of (/ 1 y) in y
1.398 * [taylor]: Taking taylor expansion of y in y
1.398 * [backup-simplify]: Simplify 0 into 0
1.398 * [backup-simplify]: Simplify 1 into 1
1.398 * [backup-simplify]: Simplify (/ 1 1) into 1
1.398 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
1.399 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.399 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.399 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.400 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
1.400 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.401 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.401 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
1.402 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 (/ 1 y))) into 0
1.402 * [backup-simplify]: Simplify (+ 0 0) into 0
1.402 * [backup-simplify]: Simplify (- 0) into 0
1.402 * [taylor]: Taking taylor expansion of 0 in y
1.402 * [backup-simplify]: Simplify 0 into 0
1.403 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.403 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
1.404 * [backup-simplify]: Simplify (- 0) into 0
1.404 * [backup-simplify]: Simplify 0 into 0
1.404 * [backup-simplify]: Simplify (- 0) into 0
1.404 * [backup-simplify]: Simplify 0 into 0
1.405 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.406 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
1.406 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
1.407 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 (/ 1 y)))) into 0
1.407 * [backup-simplify]: Simplify (+ 0 0) into 0
1.407 * [backup-simplify]: Simplify (- 0) into 0
1.407 * [taylor]: Taking taylor expansion of 0 in y
1.407 * [backup-simplify]: Simplify 0 into 0
1.407 * [backup-simplify]: Simplify 0 into 0
1.408 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.409 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
1.409 * [backup-simplify]: Simplify (- 0) into 0
1.409 * [backup-simplify]: Simplify 0 into 0
1.409 * [backup-simplify]: Simplify (- 0) into 0
1.409 * [backup-simplify]: Simplify 0 into 0
1.410 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.411 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
1.411 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) into 0
1.412 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 y))))) into 0
1.413 * [backup-simplify]: Simplify (+ 0 0) into 0
1.413 * [backup-simplify]: Simplify (- 0) into 0
1.413 * [taylor]: Taking taylor expansion of 0 in y
1.413 * [backup-simplify]: Simplify 0 into 0
1.413 * [backup-simplify]: Simplify 0 into 0
1.414 * [backup-simplify]: Simplify (+ (* (- 0.5) (* 1 (/ 1 (/ 1 (- x))))) (* (- 0.5) (* (/ 1 (/ 1 (- y))) 1))) into (+ (* 0.5 x) (* 0.5 y))
1.414 * * * [progress]: simplifying candidates
1.414 * [simplify]: Simplifying:
  (* (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))
1.415 * * [simplify]: iteration 0: 33 enodes
1.423 * * [simplify]: iteration 1: 92 enodes
1.447 * * [simplify]: iteration 2: 246 enodes
1.527 * * [simplify]: iteration 3: 798 enodes
1.940 * * [simplify]: iteration complete: 5000 enodes
1.940 * * [simplify]: Extracting #0: cost 13 inf + 0
1.941 * * [simplify]: Extracting #1: cost 285 inf + 0
1.944 * * [simplify]: Extracting #2: cost 1351 inf + 9
1.951 * * [simplify]: Extracting #3: cost 1565 inf + 1597
1.965 * * [simplify]: Extracting #4: cost 652 inf + 13838
1.973 * * [simplify]: Extracting #5: cost 29 inf + 22178
1.981 * * [simplify]: Extracting #6: cost 0 inf + 22465
1.988 * * [simplify]: Extracting #7: cost 0 inf + 22451
1.996 * [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 x 3) (pow (/ (- y x) 2.0) 3))
  (+ (* (/ (- y x) 2.0) (- (/ (- y x) 2.0) x)) (* x x))
  (- (* x x) (* (/ (- y x) 2.0) (/ (- y x) 2.0)))
  (- x (/ (- y x) 2.0))
  (+ x (/ (- y x) 2.0))
  (+ (/ y 2.0) x)
  (* 0.5 (+ x y))
  (* 0.5 (+ x y))
  (* 0.5 (+ x y))
1.996 * * * [progress]: adding candidates to table
2.060 * * [progress]: iteration 2 / 4
2.060 * * * [progress]: picking best candidate
2.064 * * * * [pick]: Picked  #<alt (λ (x y) (* 0.5 (+ x y)))>
2.064 * * * [progress]: localizing error
2.072 * * * [progress]: generating rewritten candidates
2.072 * * * [progress]: generating series expansions
2.072 * * * [progress]: simplifying candidates
2.072 * [simplify]: Simplifying:
  
2.072 * * [simplify]: iteration 0: 0 enodes
2.072 * * [simplify]: iteration complete: 0 enodes
2.072 * * [simplify]: Extracting #0: cost 0 inf + 0
2.072 * [simplify]: Simplified to:
  
2.073 * * * [progress]: adding candidates to table
2.073 * [progress]: [Phase 3 of 3] Extracting.
2.078 * [simplify]: Simplifying:
  (* 0.5 (+ x y))
2.078 * * [simplify]: iteration 0: 5 enodes
2.079 * * [simplify]: iteration 1: 7 enodes
2.079 * * [simplify]: iteration complete: 7 enodes
2.079 * * [simplify]: Extracting #0: cost 1 inf + 0
2.079 * * [simplify]: Extracting #1: cost 3 inf + 0
2.079 * * [simplify]: Extracting #2: cost 4 inf + 1
2.079 * * [simplify]: Extracting #3: cost 0 inf + 11
2.079 * [simplify]: Simplified to:
  (* (+ x y) 0.5)
2.921 * [regime-testing]: Baseline error score: 0
2.931 * [regime-testing]: Oracle error score: 0
2.932 * [regime-testing]: End program error score: 0
3.021 * [regime-testing]: Target error score: 0