0.559 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.243 * * * [progress]: [2/2] Setting up program.
0.251 * [progress]: [Phase 2 of 3] Improving.
0.287 * [simplify]: Simplifying:
  (* 0.5 (- (* x x) y))
0.289 * * [simplify]: iteration 0: 6 enodes
0.298 * * [simplify]: iteration 1: 10 enodes
0.302 * * [simplify]: iteration 2: 17 enodes
0.309 * * [simplify]: iteration 3: 29 enodes
0.319 * * [simplify]: iteration 4: 40 enodes
0.331 * * [simplify]: iteration 5: 42 enodes
0.375 * * [simplify]: iteration complete: 42 enodes
0.376 * * [simplify]: Extracting #0: cost 1 inf + 0
0.376 * * [simplify]: Extracting #1: cost 12 inf + 0
0.377 * * [simplify]: Extracting #2: cost 8 inf + 44
0.378 * * [simplify]: Extracting #3: cost 0 inf + 579
0.379 * [simplify]: Simplified to:
  (* (- (* x x) y) 0.5)
0.382 * * [progress]: iteration 1 / 4
0.383 * * * [progress]: picking best candidate
0.392 * * * * [pick]: Picked  #<alt (λ (x y) (* 0.5 (- (* x x) y)))>
0.392 * * * [progress]: localizing error
0.436 * * * [progress]: generating rewritten candidates
0.436 * * * * [progress]: [ 1 / 1 ] rewriting at (2 2)
0.449 * * * [progress]: generating series expansions
0.449 * * * * [progress]: [ 1 / 1 ] generating series at (2 2)
0.455 * [backup-simplify]: Simplify (- (* x x) y) into (- (pow x 2) y)
0.456 * [approximate]: Taking taylor expansion of (- (pow x 2) y) in (x y) around 0
0.457 * [taylor]: Taking taylor expansion of (- (pow x 2) y) in y
0.457 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.457 * [taylor]: Taking taylor expansion of x in y
0.457 * [backup-simplify]: Simplify x into x
0.457 * [taylor]: Taking taylor expansion of y in y
0.457 * [backup-simplify]: Simplify 0 into 0
0.457 * [backup-simplify]: Simplify 1 into 1
0.458 * [taylor]: Taking taylor expansion of (- (pow x 2) y) in x
0.458 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.458 * [taylor]: Taking taylor expansion of x in x
0.458 * [backup-simplify]: Simplify 0 into 0
0.458 * [backup-simplify]: Simplify 1 into 1
0.458 * [taylor]: Taking taylor expansion of y in x
0.458 * [backup-simplify]: Simplify y into y
0.458 * [taylor]: Taking taylor expansion of (- (pow x 2) y) in x
0.458 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.458 * [taylor]: Taking taylor expansion of x in x
0.458 * [backup-simplify]: Simplify 0 into 0
0.458 * [backup-simplify]: Simplify 1 into 1
0.458 * [taylor]: Taking taylor expansion of y in x
0.458 * [backup-simplify]: Simplify y into y
0.459 * [backup-simplify]: Simplify (- y) into (- y)
0.459 * [backup-simplify]: Simplify (+ 0 (- y)) into (- y)
0.459 * [taylor]: Taking taylor expansion of (- y) in y
0.459 * [taylor]: Taking taylor expansion of y in y
0.459 * [backup-simplify]: Simplify 0 into 0
0.459 * [backup-simplify]: Simplify 1 into 1
0.460 * [backup-simplify]: Simplify (- 0) into 0
0.460 * [backup-simplify]: Simplify 0 into 0
0.461 * [backup-simplify]: Simplify (- 0) into 0
0.461 * [backup-simplify]: Simplify (+ 0 0) into 0
0.461 * [taylor]: Taking taylor expansion of 0 in y
0.461 * [backup-simplify]: Simplify 0 into 0
0.461 * [backup-simplify]: Simplify 0 into 0
0.462 * [backup-simplify]: Simplify (- 1) into -1
0.462 * [backup-simplify]: Simplify -1 into -1
0.463 * [backup-simplify]: Simplify (* 1 1) into 1
0.463 * [backup-simplify]: Simplify (- 0) into 0
0.463 * [backup-simplify]: Simplify (+ 1 0) into 1
0.463 * [taylor]: Taking taylor expansion of 1 in y
0.463 * [backup-simplify]: Simplify 1 into 1
0.464 * [backup-simplify]: Simplify 1 into 1
0.464 * [backup-simplify]: Simplify 0 into 0
0.464 * [backup-simplify]: Simplify (- 0) into 0
0.464 * [backup-simplify]: Simplify 0 into 0
0.465 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.465 * [backup-simplify]: Simplify (- 0) into 0
0.465 * [backup-simplify]: Simplify (+ 0 0) into 0
0.465 * [taylor]: Taking taylor expansion of 0 in y
0.465 * [backup-simplify]: Simplify 0 into 0
0.466 * [backup-simplify]: Simplify 0 into 0
0.466 * [backup-simplify]: Simplify 0 into 0
0.466 * [backup-simplify]: Simplify 0 into 0
0.466 * [backup-simplify]: Simplify (- 0) into 0
0.466 * [backup-simplify]: Simplify 0 into 0
0.467 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 x) 2)) (* -1 (* y 1))) into (- (pow x 2) y)
0.467 * [backup-simplify]: Simplify (- (* (/ 1 x) (/ 1 x)) (/ 1 y)) into (- (/ 1 (pow x 2)) (/ 1 y))
0.467 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in (x y) around 0
0.467 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in y
0.467 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.467 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.467 * [taylor]: Taking taylor expansion of x in y
0.467 * [backup-simplify]: Simplify x into x
0.468 * [backup-simplify]: Simplify (* x x) into (pow x 2)
0.468 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
0.468 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.468 * [taylor]: Taking taylor expansion of y in y
0.468 * [backup-simplify]: Simplify 0 into 0
0.468 * [backup-simplify]: Simplify 1 into 1
0.468 * [backup-simplify]: Simplify (/ 1 1) into 1
0.468 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in x
0.468 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.469 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.469 * [taylor]: Taking taylor expansion of x in x
0.469 * [backup-simplify]: Simplify 0 into 0
0.469 * [backup-simplify]: Simplify 1 into 1
0.469 * [backup-simplify]: Simplify (* 1 1) into 1
0.469 * [backup-simplify]: Simplify (/ 1 1) into 1
0.469 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.469 * [taylor]: Taking taylor expansion of y in x
0.470 * [backup-simplify]: Simplify y into y
0.470 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.470 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in x
0.470 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.470 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.470 * [taylor]: Taking taylor expansion of x in x
0.470 * [backup-simplify]: Simplify 0 into 0
0.470 * [backup-simplify]: Simplify 1 into 1
0.470 * [backup-simplify]: Simplify (* 1 1) into 1
0.471 * [backup-simplify]: Simplify (/ 1 1) into 1
0.471 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.471 * [taylor]: Taking taylor expansion of y in x
0.471 * [backup-simplify]: Simplify y into y
0.471 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.471 * [backup-simplify]: Simplify (+ 1 0) into 1
0.471 * [taylor]: Taking taylor expansion of 1 in y
0.471 * [backup-simplify]: Simplify 1 into 1
0.472 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.473 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.474 * [backup-simplify]: Simplify (+ 0 0) into 0
0.474 * [taylor]: Taking taylor expansion of 0 in y
0.474 * [backup-simplify]: Simplify 0 into 0
0.474 * [backup-simplify]: Simplify 1 into 1
0.475 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
0.475 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.476 * [backup-simplify]: Simplify (- (/ 1 y)) into (- (/ 1 y))
0.476 * [backup-simplify]: Simplify (+ 0 (- (/ 1 y))) into (- (/ 1 y))
0.476 * [taylor]: Taking taylor expansion of (- (/ 1 y)) in y
0.476 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.476 * [taylor]: Taking taylor expansion of y in y
0.476 * [backup-simplify]: Simplify 0 into 0
0.476 * [backup-simplify]: Simplify 1 into 1
0.476 * [backup-simplify]: Simplify (/ 1 1) into 1
0.477 * [backup-simplify]: Simplify (- 1) into -1
0.477 * [backup-simplify]: Simplify -1 into -1
0.477 * [backup-simplify]: Simplify 0 into 0
0.477 * [backup-simplify]: Simplify 0 into 0
0.478 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
0.479 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.479 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
0.480 * [backup-simplify]: Simplify (- 0) into 0
0.480 * [backup-simplify]: Simplify (+ 0 0) into 0
0.480 * [taylor]: Taking taylor expansion of 0 in y
0.480 * [backup-simplify]: Simplify 0 into 0
0.481 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.481 * [backup-simplify]: Simplify (- 0) into 0
0.481 * [backup-simplify]: Simplify 0 into 0
0.481 * [backup-simplify]: Simplify 0 into 0
0.482 * [backup-simplify]: Simplify 0 into 0
0.484 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
0.486 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.486 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.487 * [backup-simplify]: Simplify (- 0) into 0
0.487 * [backup-simplify]: Simplify (+ 0 0) into 0
0.487 * [taylor]: Taking taylor expansion of 0 in y
0.487 * [backup-simplify]: Simplify 0 into 0
0.487 * [backup-simplify]: Simplify 0 into 0
0.488 * [backup-simplify]: Simplify (+ (* -1 (* (/ 1 (/ 1 y)) 1)) (* 1 (pow (* 1 (/ 1 (/ 1 x))) 2))) into (- (pow x 2) y)
0.488 * [backup-simplify]: Simplify (- (* (/ 1 (- x)) (/ 1 (- x))) (/ 1 (- y))) into (+ (/ 1 (pow x 2)) (/ 1 y))
0.488 * [approximate]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in (x y) around 0
0.488 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in y
0.488 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.488 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.488 * [taylor]: Taking taylor expansion of x in y
0.488 * [backup-simplify]: Simplify x into x
0.488 * [backup-simplify]: Simplify (* x x) into (pow x 2)
0.489 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
0.489 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.489 * [taylor]: Taking taylor expansion of y in y
0.489 * [backup-simplify]: Simplify 0 into 0
0.489 * [backup-simplify]: Simplify 1 into 1
0.489 * [backup-simplify]: Simplify (/ 1 1) into 1
0.489 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in x
0.489 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.489 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.489 * [taylor]: Taking taylor expansion of x in x
0.489 * [backup-simplify]: Simplify 0 into 0
0.489 * [backup-simplify]: Simplify 1 into 1
0.490 * [backup-simplify]: Simplify (* 1 1) into 1
0.490 * [backup-simplify]: Simplify (/ 1 1) into 1
0.490 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.490 * [taylor]: Taking taylor expansion of y in x
0.490 * [backup-simplify]: Simplify y into y
0.490 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.490 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in x
0.490 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.490 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.490 * [taylor]: Taking taylor expansion of x in x
0.490 * [backup-simplify]: Simplify 0 into 0
0.490 * [backup-simplify]: Simplify 1 into 1
0.491 * [backup-simplify]: Simplify (* 1 1) into 1
0.491 * [backup-simplify]: Simplify (/ 1 1) into 1
0.491 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.491 * [taylor]: Taking taylor expansion of y in x
0.491 * [backup-simplify]: Simplify y into y
0.491 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.492 * [backup-simplify]: Simplify (+ 1 0) into 1
0.492 * [taylor]: Taking taylor expansion of 1 in y
0.492 * [backup-simplify]: Simplify 1 into 1
0.492 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.493 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.493 * [backup-simplify]: Simplify (+ 0 0) into 0
0.493 * [taylor]: Taking taylor expansion of 0 in y
0.493 * [backup-simplify]: Simplify 0 into 0
0.493 * [backup-simplify]: Simplify 1 into 1
0.494 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
0.495 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.495 * [backup-simplify]: Simplify (+ 0 (/ 1 y)) into (/ 1 y)
0.495 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.495 * [taylor]: Taking taylor expansion of y in y
0.495 * [backup-simplify]: Simplify 0 into 0
0.495 * [backup-simplify]: Simplify 1 into 1
0.496 * [backup-simplify]: Simplify (/ 1 1) into 1
0.496 * [backup-simplify]: Simplify 1 into 1
0.496 * [backup-simplify]: Simplify 0 into 0
0.496 * [backup-simplify]: Simplify 0 into 0
0.497 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
0.498 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.498 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
0.498 * [backup-simplify]: Simplify (+ 0 0) into 0
0.498 * [taylor]: Taking taylor expansion of 0 in y
0.498 * [backup-simplify]: Simplify 0 into 0
0.499 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.499 * [backup-simplify]: Simplify 0 into 0
0.499 * [backup-simplify]: Simplify 0 into 0
0.499 * [backup-simplify]: Simplify 0 into 0
0.500 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
0.501 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.501 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.502 * [backup-simplify]: Simplify (+ 0 0) into 0
0.502 * [taylor]: Taking taylor expansion of 0 in y
0.502 * [backup-simplify]: Simplify 0 into 0
0.502 * [backup-simplify]: Simplify 0 into 0
0.502 * [backup-simplify]: Simplify (+ (* 1 (* (/ 1 (/ 1 (- y))) 1)) (* 1 (pow (* 1 (/ 1 (/ 1 (- x)))) 2))) into (- (pow x 2) y)
0.502 * * * [progress]: simplifying candidates
0.504 * [simplify]: Simplifying:
  (fma x x (- (* (cbrt y) (* (cbrt y) (cbrt y)))))
  (fma (- (cbrt y)) (* (cbrt y) (cbrt y)) (* (cbrt y) (* (cbrt y) (cbrt y))))
  (fma x x (- (* (sqrt y) (sqrt y))))
  (fma (- (sqrt y)) (sqrt y) (* (sqrt y) (sqrt y)))
  (fma x x (- (* y 1)))
  (fma (- y) 1 (* y 1))
  (expm1 (- (* x x) y))
  (log1p (- (* x x) y))
  (- y)
  (/ (exp (* x x)) (exp y))
  (log (- (* x x) y))
  (exp (- (* x x) y))
  (* (cbrt (- (* x x) y)) (cbrt (- (* x x) y)))
  (cbrt (- (* x x) y))
  (* (* (- (* x x) y) (- (* x x) y)) (- (* x x) y))
  (sqrt (- (* x x) y))
  (sqrt (- (* x x) y))
  (- (pow (* x x) 3) (pow y 3))
  (+ (* (* x x) (* x x)) (+ (* y y) (* (* x x) y)))
  (- y)
  (- (* (* x x) (* x x)) (* y y))
  (+ (* x x) y)
  (+ x (sqrt y))
  (- x (sqrt y))
  (- y)
  (- (pow x 2) y)
  (- (pow x 2) y)
  (- (pow x 2) y)
0.504 * * [simplify]: iteration 0: 51 enodes
0.528 * * [simplify]: iteration 1: 136 enodes
0.633 * * [simplify]: iteration 2: 567 enodes
1.946 * * [simplify]: iteration 3: 4365 enodes
3.724 * * [simplify]: iteration complete: 5000 enodes
3.724 * * [simplify]: Extracting #0: cost 17 inf + 0
3.725 * * [simplify]: Extracting #1: cost 622 inf + 0
3.732 * * [simplify]: Extracting #2: cost 1125 inf + 25144
3.764 * * [simplify]: Extracting #3: cost 212 inf + 147263
3.818 * * [simplify]: Extracting #4: cost 43 inf + 174388
3.879 * * [simplify]: Extracting #5: cost 3 inf + 187622
3.926 * * [simplify]: Extracting #6: cost 0 inf + 188528
4.000 * [simplify]: Simplified to:
  (- (* x x) y)
  (- y y)
  (- (* x x) y)
  (- y y)
  (- (* x x) y)
  (- y y)
  (expm1 (- (* x x) y))
  (log1p (- (* x x) y))
  (- y)
  (exp (- (* x x) y))
  (log (- (* x x) y))
  (exp (- (* x x) y))
  (* (cbrt (- (* x x) y)) (cbrt (- (* x x) y)))
  (cbrt (- (* x x) y))
  (* (- (* x x) y) (* (- (* x x) y) (- (* x x) y)))
  (sqrt (- (* x x) y))
  (sqrt (- (* x x) y))
  (- (* (* (* x x) (* x x)) (* x x)) (* (* y y) y))
  (fma y (+ (* x x) y) (* (* x x) (* x x)))
  (- y)
  (* (+ (* x x) y) (- (* x x) y))
  (fma x x y)
  (+ (sqrt y) x)
  (- x (sqrt y))
  (- y)
  (- (* x x) y)
  (- (* x x) y)
  (- (* x x) y)
4.003 * * * [progress]: adding candidates to table
4.106 * * [progress]: iteration 2 / 4
4.106 * * * [progress]: picking best candidate
4.109 * * * * [pick]: Picked  #<alt (λ (x y) (* 0.5 (fma x x (- y))))>
4.109 * * * [progress]: localizing error
4.117 * * * [progress]: generating rewritten candidates
4.117 * * * [progress]: generating series expansions
4.117 * * * [progress]: simplifying candidates
4.117 * [simplify]: Simplifying:
  
4.117 * * [simplify]: iteration 0: 0 enodes
4.117 * * [simplify]: iteration complete: 0 enodes
4.117 * * [simplify]: Extracting #0: cost 0 inf + 0
4.117 * [simplify]: Simplified to:
  
4.117 * * * [progress]: adding candidates to table
4.118 * [progress]: [Phase 3 of 3] Extracting.
4.123 * [simplify]: Simplifying:
  (* 0.5 (fma x x (- y)))
4.123 * * [simplify]: iteration 0: 6 enodes
4.124 * * [simplify]: iteration 1: 7 enodes
4.124 * * [simplify]: iteration complete: 7 enodes
4.124 * * [simplify]: Extracting #0: cost 1 inf + 0
4.124 * * [simplify]: Extracting #1: cost 3 inf + 0
4.124 * * [simplify]: Extracting #2: cost 4 inf + 1
4.124 * * [simplify]: Extracting #3: cost 4 inf + 2
4.125 * * [simplify]: Extracting #4: cost 0 inf + 279
4.125 * [simplify]: Simplified to:
  (* (fma x x (- y)) 0.5)
5.433 * [regime-testing]: Baseline error score: 0.008126015751968996
5.450 * [regime-testing]: Oracle error score: 0.008126015751968996
5.450 * [regime-testing]: End program error score: 0.008126015751968996