1.219 * [progress]: [Phase 1 of 3] Setting up.
0.003 * * * [progress]: [1/2] Preparing points
0.149 * * * [progress]: [2/2] Setting up program.
0.157 * [progress]: [Phase 2 of 3] Improving.
0.160 * [simplify]: Simplifying:
  (* 0.5 (- (* x x) y))
0.161 * * [simplify]: iteration 0: 6 enodes
0.167 * * [simplify]: iteration 1: 9 enodes
0.169 * * [simplify]: iteration 2: 16 enodes
0.175 * * [simplify]: iteration 3: 26 enodes
0.183 * * [simplify]: iteration 4: 33 enodes
0.190 * * [simplify]: iteration complete: 33 enodes
0.191 * * [simplify]: Extracting #0: cost 1 inf + 0
0.191 * * [simplify]: Extracting #1: cost 6 inf + 0
0.191 * * [simplify]: Extracting #2: cost 11 inf + 1
0.192 * * [simplify]: Extracting #3: cost 4 inf + 18
0.192 * * [simplify]: Extracting #4: cost 0 inf + 37
0.192 * [simplify]: Simplified to:
  (* (- (* x x) y) 0.5)
0.234 * * [progress]: iteration 1 / 4
0.234 * * * [progress]: picking best candidate
0.237 * * * * [pick]: Picked  #<alt (λ (x y) (* (- (* x x) y) 0.5))>
0.237 * * * [progress]: localizing error
0.256 * * * [progress]: generating rewritten candidates
0.256 * * * * [progress]: [ 1 / 1 ] rewriting at (2 1)
0.275 * * * [progress]: generating series expansions
0.275 * * * * [progress]: [ 1 / 1 ] generating series at (2 1)
0.283 * [backup-simplify]: Simplify (- (* x x) y) into (- (pow x 2) y)
0.283 * [approximate]: Taking taylor expansion of (- (pow x 2) y) in (x y) around 0
0.284 * [taylor]: Taking taylor expansion of (- (pow x 2) y) in y
0.284 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.284 * [taylor]: Taking taylor expansion of x in y
0.284 * [backup-simplify]: Simplify x into x
0.284 * [taylor]: Taking taylor expansion of y in y
0.284 * [backup-simplify]: Simplify 0 into 0
0.284 * [backup-simplify]: Simplify 1 into 1
0.285 * [taylor]: Taking taylor expansion of (- (pow x 2) y) in x
0.285 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.285 * [taylor]: Taking taylor expansion of x in x
0.285 * [backup-simplify]: Simplify 0 into 0
0.285 * [backup-simplify]: Simplify 1 into 1
0.285 * [taylor]: Taking taylor expansion of y in x
0.285 * [backup-simplify]: Simplify y into y
0.285 * [taylor]: Taking taylor expansion of (- (pow x 2) y) in x
0.285 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.285 * [taylor]: Taking taylor expansion of x in x
0.285 * [backup-simplify]: Simplify 0 into 0
0.285 * [backup-simplify]: Simplify 1 into 1
0.285 * [taylor]: Taking taylor expansion of y in x
0.285 * [backup-simplify]: Simplify y into y
0.285 * [backup-simplify]: Simplify (- y) into (- y)
0.286 * [backup-simplify]: Simplify (+ 0 (- y)) into (- y)
0.286 * [taylor]: Taking taylor expansion of (- y) in y
0.286 * [taylor]: Taking taylor expansion of y in y
0.286 * [backup-simplify]: Simplify 0 into 0
0.286 * [backup-simplify]: Simplify 1 into 1
0.286 * [backup-simplify]: Simplify (- 0) into 0
0.286 * [backup-simplify]: Simplify 0 into 0
0.287 * [backup-simplify]: Simplify (- 0) into 0
0.287 * [backup-simplify]: Simplify (+ 0 0) into 0
0.287 * [taylor]: Taking taylor expansion of 0 in y
0.287 * [backup-simplify]: Simplify 0 into 0
0.287 * [backup-simplify]: Simplify 0 into 0
0.287 * [backup-simplify]: Simplify (- 1) into -1
0.287 * [backup-simplify]: Simplify -1 into -1
0.288 * [backup-simplify]: Simplify (* 1 1) into 1
0.288 * [backup-simplify]: Simplify (- 0) into 0
0.289 * [backup-simplify]: Simplify (+ 1 0) into 1
0.289 * [taylor]: Taking taylor expansion of 1 in y
0.289 * [backup-simplify]: Simplify 1 into 1
0.289 * [backup-simplify]: Simplify 1 into 1
0.289 * [backup-simplify]: Simplify 0 into 0
0.290 * [backup-simplify]: Simplify (- 0) into 0
0.290 * [backup-simplify]: Simplify 0 into 0
0.290 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.290 * [backup-simplify]: Simplify (- 0) into 0
0.291 * [backup-simplify]: Simplify (+ 0 0) into 0
0.291 * [taylor]: Taking taylor expansion of 0 in y
0.291 * [backup-simplify]: Simplify 0 into 0
0.291 * [backup-simplify]: Simplify 0 into 0
0.291 * [backup-simplify]: Simplify 0 into 0
0.291 * [backup-simplify]: Simplify 0 into 0
0.291 * [backup-simplify]: Simplify (- 0) into 0
0.291 * [backup-simplify]: Simplify 0 into 0
0.292 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 x) 2)) (* -1 (* y 1))) into (- (pow x 2) y)
0.292 * [backup-simplify]: Simplify (- (* (/ 1 x) (/ 1 x)) (/ 1 y)) into (- (/ 1 (pow x 2)) (/ 1 y))
0.292 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in (x y) around 0
0.292 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in y
0.292 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.292 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.292 * [taylor]: Taking taylor expansion of x in y
0.292 * [backup-simplify]: Simplify x into x
0.292 * [backup-simplify]: Simplify (* x x) into (pow x 2)
0.292 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
0.292 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.292 * [taylor]: Taking taylor expansion of y in y
0.292 * [backup-simplify]: Simplify 0 into 0
0.292 * [backup-simplify]: Simplify 1 into 1
0.293 * [backup-simplify]: Simplify (/ 1 1) into 1
0.293 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in x
0.293 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.293 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.293 * [taylor]: Taking taylor expansion of x in x
0.293 * [backup-simplify]: Simplify 0 into 0
0.293 * [backup-simplify]: Simplify 1 into 1
0.293 * [backup-simplify]: Simplify (* 1 1) into 1
0.293 * [backup-simplify]: Simplify (/ 1 1) into 1
0.293 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.293 * [taylor]: Taking taylor expansion of y in x
0.293 * [backup-simplify]: Simplify y into y
0.293 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.293 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in x
0.293 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.293 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.293 * [taylor]: Taking taylor expansion of x in x
0.293 * [backup-simplify]: Simplify 0 into 0
0.293 * [backup-simplify]: Simplify 1 into 1
0.294 * [backup-simplify]: Simplify (* 1 1) into 1
0.294 * [backup-simplify]: Simplify (/ 1 1) into 1
0.294 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.294 * [taylor]: Taking taylor expansion of y in x
0.294 * [backup-simplify]: Simplify y into y
0.294 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.294 * [backup-simplify]: Simplify (+ 1 0) into 1
0.294 * [taylor]: Taking taylor expansion of 1 in y
0.294 * [backup-simplify]: Simplify 1 into 1
0.295 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.295 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.296 * [backup-simplify]: Simplify (+ 0 0) into 0
0.296 * [taylor]: Taking taylor expansion of 0 in y
0.296 * [backup-simplify]: Simplify 0 into 0
0.296 * [backup-simplify]: Simplify 1 into 1
0.296 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
0.297 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.297 * [backup-simplify]: Simplify (- (/ 1 y)) into (- (/ 1 y))
0.297 * [backup-simplify]: Simplify (+ 0 (- (/ 1 y))) into (- (/ 1 y))
0.297 * [taylor]: Taking taylor expansion of (- (/ 1 y)) in y
0.297 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.297 * [taylor]: Taking taylor expansion of y in y
0.297 * [backup-simplify]: Simplify 0 into 0
0.297 * [backup-simplify]: Simplify 1 into 1
0.297 * [backup-simplify]: Simplify (/ 1 1) into 1
0.298 * [backup-simplify]: Simplify (- 1) into -1
0.298 * [backup-simplify]: Simplify -1 into -1
0.298 * [backup-simplify]: Simplify 0 into 0
0.298 * [backup-simplify]: Simplify 0 into 0
0.299 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
0.299 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.300 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
0.300 * [backup-simplify]: Simplify (- 0) into 0
0.301 * [backup-simplify]: Simplify (+ 0 0) into 0
0.301 * [taylor]: Taking taylor expansion of 0 in y
0.301 * [backup-simplify]: Simplify 0 into 0
0.302 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.303 * [backup-simplify]: Simplify (- 0) into 0
0.303 * [backup-simplify]: Simplify 0 into 0
0.303 * [backup-simplify]: Simplify 0 into 0
0.303 * [backup-simplify]: Simplify 0 into 0
0.304 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
0.305 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.305 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.306 * [backup-simplify]: Simplify (- 0) into 0
0.306 * [backup-simplify]: Simplify (+ 0 0) into 0
0.306 * [taylor]: Taking taylor expansion of 0 in y
0.306 * [backup-simplify]: Simplify 0 into 0
0.306 * [backup-simplify]: Simplify 0 into 0
0.307 * [backup-simplify]: Simplify (+ (* -1 (* (/ 1 (/ 1 y)) 1)) (* 1 (pow (* 1 (/ 1 (/ 1 x))) 2))) into (- (pow x 2) y)
0.307 * [backup-simplify]: Simplify (- (* (/ 1 (- x)) (/ 1 (- x))) (/ 1 (- y))) into (+ (/ 1 (pow x 2)) (/ 1 y))
0.307 * [approximate]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in (x y) around 0
0.307 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in y
0.307 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.307 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.307 * [taylor]: Taking taylor expansion of x in y
0.307 * [backup-simplify]: Simplify x into x
0.307 * [backup-simplify]: Simplify (* x x) into (pow x 2)
0.307 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
0.307 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.308 * [taylor]: Taking taylor expansion of y in y
0.308 * [backup-simplify]: Simplify 0 into 0
0.308 * [backup-simplify]: Simplify 1 into 1
0.308 * [backup-simplify]: Simplify (/ 1 1) into 1
0.308 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in x
0.308 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.308 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.308 * [taylor]: Taking taylor expansion of x in x
0.308 * [backup-simplify]: Simplify 0 into 0
0.308 * [backup-simplify]: Simplify 1 into 1
0.309 * [backup-simplify]: Simplify (* 1 1) into 1
0.309 * [backup-simplify]: Simplify (/ 1 1) into 1
0.309 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.309 * [taylor]: Taking taylor expansion of y in x
0.309 * [backup-simplify]: Simplify y into y
0.309 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.309 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in x
0.309 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.309 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.309 * [taylor]: Taking taylor expansion of x in x
0.309 * [backup-simplify]: Simplify 0 into 0
0.309 * [backup-simplify]: Simplify 1 into 1
0.310 * [backup-simplify]: Simplify (* 1 1) into 1
0.310 * [backup-simplify]: Simplify (/ 1 1) into 1
0.310 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.310 * [taylor]: Taking taylor expansion of y in x
0.310 * [backup-simplify]: Simplify y into y
0.310 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.311 * [backup-simplify]: Simplify (+ 1 0) into 1
0.311 * [taylor]: Taking taylor expansion of 1 in y
0.311 * [backup-simplify]: Simplify 1 into 1
0.311 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.312 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.313 * [backup-simplify]: Simplify (+ 0 0) into 0
0.313 * [taylor]: Taking taylor expansion of 0 in y
0.313 * [backup-simplify]: Simplify 0 into 0
0.313 * [backup-simplify]: Simplify 1 into 1
0.314 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
0.315 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.315 * [backup-simplify]: Simplify (+ 0 (/ 1 y)) into (/ 1 y)
0.315 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.315 * [taylor]: Taking taylor expansion of y in y
0.315 * [backup-simplify]: Simplify 0 into 0
0.315 * [backup-simplify]: Simplify 1 into 1
0.315 * [backup-simplify]: Simplify (/ 1 1) into 1
0.315 * [backup-simplify]: Simplify 1 into 1
0.315 * [backup-simplify]: Simplify 0 into 0
0.315 * [backup-simplify]: Simplify 0 into 0
0.316 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
0.317 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.317 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
0.318 * [backup-simplify]: Simplify (+ 0 0) into 0
0.318 * [taylor]: Taking taylor expansion of 0 in y
0.318 * [backup-simplify]: Simplify 0 into 0
0.318 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.319 * [backup-simplify]: Simplify 0 into 0
0.319 * [backup-simplify]: Simplify 0 into 0
0.319 * [backup-simplify]: Simplify 0 into 0
0.320 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
0.321 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.321 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.321 * [backup-simplify]: Simplify (+ 0 0) into 0
0.321 * [taylor]: Taking taylor expansion of 0 in y
0.321 * [backup-simplify]: Simplify 0 into 0
0.321 * [backup-simplify]: Simplify 0 into 0
0.322 * [backup-simplify]: Simplify (+ (* 1 (* (/ 1 (/ 1 (- y))) 1)) (* 1 (pow (* 1 (/ 1 (/ 1 (- x)))) 2))) into (- (pow x 2) y)
0.322 * * * [progress]: simplifying candidates
0.323 * [simplify]: Simplifying:
  (/ (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)
0.323 * * [simplify]: iteration 0: 32 enodes
0.333 * * [simplify]: iteration 1: 87 enodes
0.383 * * [simplify]: iteration 2: 309 enodes
0.881 * * [simplify]: iteration 3: 1610 enodes
1.337 * * [simplify]: iteration complete: 5002 enodes
1.338 * * [simplify]: Extracting #0: cost 14 inf + 0
1.338 * * [simplify]: Extracting #1: cost 100 inf + 0
1.340 * * [simplify]: Extracting #2: cost 1587 inf + 13
1.346 * * [simplify]: Extracting #3: cost 1256 inf + 4386
1.353 * * [simplify]: Extracting #4: cost 271 inf + 9850
1.366 * * [simplify]: Extracting #5: cost 135 inf + 10825
1.372 * * [simplify]: Extracting #6: cost 28 inf + 11350
1.379 * * [simplify]: Extracting #7: cost 0 inf + 11512
1.385 * [simplify]: Simplified to:
  (exp (- (* x x) y))
  (log (- (* x x) y))
  (exp (- (* x x) y))
  (* (cbrt (- (* x x) y)) (cbrt (- (* x x) y)))
  (cbrt (- (* x x) y))
  (pow (- (* x x) y) 3)
  (sqrt (- (* x x) y))
  (sqrt (- (* x x) y))
  (- (pow x 6) (pow y 3))
  (+ (pow x 4) (* y (+ (* x x) y)))
  (- y)
  (- (pow x 4) (* y y))
  (+ (* x x) y)
  (+ (sqrt y) x)
  (- x (sqrt y))
  (- y)
  (- (* x x) y)
  (- (* x x) y)
  (- (* x x) y)
1.385 * * * [progress]: adding candidates to table
1.441 * [progress]: [Phase 3 of 3] Extracting.
1.444 * [simplify]: Simplifying:
  (* (- (* x x) y) 0.5)
1.444 * * [simplify]: iteration 0: 6 enodes
1.445 * * [simplify]: iteration 1: 7 enodes
1.445 * * [simplify]: iteration complete: 7 enodes
1.445 * * [simplify]: Extracting #0: cost 1 inf + 0
1.445 * * [simplify]: Extracting #1: cost 3 inf + 0
1.445 * * [simplify]: Extracting #2: cost 4 inf + 1
1.445 * * [simplify]: Extracting #3: cost 4 inf + 2
1.445 * * [simplify]: Extracting #4: cost 3 inf + 3
1.445 * * [simplify]: Extracting #5: cost 0 inf + 18
1.445 * [simplify]: Simplified to:
  (* (- (* x x) y) 0.5)
2.619 * [regime-testing]: Baseline error score: 0.021380468535195457
2.623 * [regime-testing]: Oracle error score: 0.021380468535195457
2.624 * [regime-testing]: End program error score: 0.021380468535195457