0.672 * [progress]: [Phase 1 of 3] Setting up.
0.003 * * * [progress]: [1/2] Preparing points
0.113 * * * [progress]: [2/2] Setting up program.
0.121 * [progress]: [Phase 2 of 3] Improving.
0.125 * [simplify]: Simplifying:
  (* 0.5 (- (* x x) y))
0.126 * * [simplify]: iteration 0: 6 enodes
0.132 * * [simplify]: iteration 1: 10 enodes
0.135 * * [simplify]: iteration 2: 17 enodes
0.140 * * [simplify]: iteration 3: 29 enodes
0.149 * * [simplify]: iteration 4: 40 enodes
0.159 * * [simplify]: iteration 5: 42 enodes
0.169 * * [simplify]: iteration complete: 42 enodes
0.169 * * [simplify]: Extracting #0: cost 1 inf + 0
0.169 * * [simplify]: Extracting #1: cost 12 inf + 0
0.170 * * [simplify]: Extracting #2: cost 8 inf + 44
0.170 * * [simplify]: Extracting #3: cost 0 inf + 579
0.171 * [simplify]: Simplified to:
  (* (- (* x x) y) 0.5)
0.174 * * [progress]: iteration 1 / 4
0.174 * * * [progress]: picking best candidate
0.180 * * * * [pick]: Picked  #<alt (λ (x y) (* 0.5 (- (* x x) y)))>
0.180 * * * [progress]: localizing error
0.223 * * * [progress]: generating rewritten candidates
0.223 * * * * [progress]: [ 1 / 1 ] rewriting at (2 2)
0.235 * * * [progress]: generating series expansions
0.235 * * * * [progress]: [ 1 / 1 ] generating series at (2 2)
0.243 * [backup-simplify]: Simplify (- (* x x) y) into (- (pow x 2) y)
0.243 * [approximate]: Taking taylor expansion of (- (pow x 2) y) in (x y) around 0
0.244 * [taylor]: Taking taylor expansion of (- (pow x 2) y) in y
0.245 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.245 * [taylor]: Taking taylor expansion of x in y
0.245 * [backup-simplify]: Simplify x into x
0.245 * [taylor]: Taking taylor expansion of y in y
0.245 * [backup-simplify]: Simplify 0 into 0
0.245 * [backup-simplify]: Simplify 1 into 1
0.245 * [taylor]: Taking taylor expansion of (- (pow x 2) y) in x
0.245 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.245 * [taylor]: Taking taylor expansion of x in x
0.245 * [backup-simplify]: Simplify 0 into 0
0.245 * [backup-simplify]: Simplify 1 into 1
0.245 * [taylor]: Taking taylor expansion of y in x
0.245 * [backup-simplify]: Simplify y into y
0.246 * [taylor]: Taking taylor expansion of (- (pow x 2) y) in x
0.246 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.246 * [taylor]: Taking taylor expansion of x in x
0.246 * [backup-simplify]: Simplify 0 into 0
0.246 * [backup-simplify]: Simplify 1 into 1
0.246 * [taylor]: Taking taylor expansion of y in x
0.246 * [backup-simplify]: Simplify y into y
0.247 * [backup-simplify]: Simplify (- y) into (- y)
0.247 * [backup-simplify]: Simplify (+ 0 (- y)) into (- y)
0.247 * [taylor]: Taking taylor expansion of (- y) in y
0.247 * [taylor]: Taking taylor expansion of y in y
0.247 * [backup-simplify]: Simplify 0 into 0
0.247 * [backup-simplify]: Simplify 1 into 1
0.248 * [backup-simplify]: Simplify (- 0) into 0
0.248 * [backup-simplify]: Simplify 0 into 0
0.248 * [backup-simplify]: Simplify (- 0) into 0
0.249 * [backup-simplify]: Simplify (+ 0 0) into 0
0.249 * [taylor]: Taking taylor expansion of 0 in y
0.249 * [backup-simplify]: Simplify 0 into 0
0.249 * [backup-simplify]: Simplify 0 into 0
0.249 * [backup-simplify]: Simplify (- 1) into -1
0.250 * [backup-simplify]: Simplify -1 into -1
0.250 * [backup-simplify]: Simplify (* 1 1) into 1
0.251 * [backup-simplify]: Simplify (- 0) into 0
0.251 * [backup-simplify]: Simplify (+ 1 0) into 1
0.251 * [taylor]: Taking taylor expansion of 1 in y
0.251 * [backup-simplify]: Simplify 1 into 1
0.251 * [backup-simplify]: Simplify 1 into 1
0.251 * [backup-simplify]: Simplify 0 into 0
0.252 * [backup-simplify]: Simplify (- 0) into 0
0.252 * [backup-simplify]: Simplify 0 into 0
0.252 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.253 * [backup-simplify]: Simplify (- 0) into 0
0.253 * [backup-simplify]: Simplify (+ 0 0) into 0
0.253 * [taylor]: Taking taylor expansion of 0 in y
0.253 * [backup-simplify]: Simplify 0 into 0
0.253 * [backup-simplify]: Simplify 0 into 0
0.253 * [backup-simplify]: Simplify 0 into 0
0.253 * [backup-simplify]: Simplify 0 into 0
0.254 * [backup-simplify]: Simplify (- 0) into 0
0.254 * [backup-simplify]: Simplify 0 into 0
0.254 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 x) 2)) (* -1 (* y 1))) into (- (pow x 2) y)
0.255 * [backup-simplify]: Simplify (- (* (/ 1 x) (/ 1 x)) (/ 1 y)) into (- (/ 1 (pow x 2)) (/ 1 y))
0.255 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in (x y) around 0
0.255 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in y
0.255 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.255 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.255 * [taylor]: Taking taylor expansion of x in y
0.255 * [backup-simplify]: Simplify x into x
0.255 * [backup-simplify]: Simplify (* x x) into (pow x 2)
0.255 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
0.255 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.255 * [taylor]: Taking taylor expansion of y in y
0.255 * [backup-simplify]: Simplify 0 into 0
0.255 * [backup-simplify]: Simplify 1 into 1
0.256 * [backup-simplify]: Simplify (/ 1 1) into 1
0.256 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in x
0.256 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.256 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.256 * [taylor]: Taking taylor expansion of x in x
0.256 * [backup-simplify]: Simplify 0 into 0
0.256 * [backup-simplify]: Simplify 1 into 1
0.256 * [backup-simplify]: Simplify (* 1 1) into 1
0.257 * [backup-simplify]: Simplify (/ 1 1) into 1
0.257 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.257 * [taylor]: Taking taylor expansion of y in x
0.257 * [backup-simplify]: Simplify y into y
0.257 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.257 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in x
0.257 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.257 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.257 * [taylor]: Taking taylor expansion of x in x
0.257 * [backup-simplify]: Simplify 0 into 0
0.257 * [backup-simplify]: Simplify 1 into 1
0.258 * [backup-simplify]: Simplify (* 1 1) into 1
0.258 * [backup-simplify]: Simplify (/ 1 1) into 1
0.258 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.258 * [taylor]: Taking taylor expansion of y in x
0.258 * [backup-simplify]: Simplify y into y
0.258 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.259 * [backup-simplify]: Simplify (+ 1 0) into 1
0.259 * [taylor]: Taking taylor expansion of 1 in y
0.259 * [backup-simplify]: Simplify 1 into 1
0.260 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.260 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.261 * [backup-simplify]: Simplify (+ 0 0) into 0
0.261 * [taylor]: Taking taylor expansion of 0 in y
0.261 * [backup-simplify]: Simplify 0 into 0
0.261 * [backup-simplify]: Simplify 1 into 1
0.262 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
0.263 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.263 * [backup-simplify]: Simplify (- (/ 1 y)) into (- (/ 1 y))
0.263 * [backup-simplify]: Simplify (+ 0 (- (/ 1 y))) into (- (/ 1 y))
0.263 * [taylor]: Taking taylor expansion of (- (/ 1 y)) in y
0.263 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.263 * [taylor]: Taking taylor expansion of y in y
0.263 * [backup-simplify]: Simplify 0 into 0
0.263 * [backup-simplify]: Simplify 1 into 1
0.263 * [backup-simplify]: Simplify (/ 1 1) into 1
0.264 * [backup-simplify]: Simplify (- 1) into -1
0.264 * [backup-simplify]: Simplify -1 into -1
0.264 * [backup-simplify]: Simplify 0 into 0
0.264 * [backup-simplify]: Simplify 0 into 0
0.265 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
0.266 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.267 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
0.267 * [backup-simplify]: Simplify (- 0) into 0
0.267 * [backup-simplify]: Simplify (+ 0 0) into 0
0.268 * [taylor]: Taking taylor expansion of 0 in y
0.268 * [backup-simplify]: Simplify 0 into 0
0.268 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.269 * [backup-simplify]: Simplify (- 0) into 0
0.269 * [backup-simplify]: Simplify 0 into 0
0.269 * [backup-simplify]: Simplify 0 into 0
0.269 * [backup-simplify]: Simplify 0 into 0
0.270 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
0.271 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.272 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.272 * [backup-simplify]: Simplify (- 0) into 0
0.272 * [backup-simplify]: Simplify (+ 0 0) into 0
0.272 * [taylor]: Taking taylor expansion of 0 in y
0.272 * [backup-simplify]: Simplify 0 into 0
0.272 * [backup-simplify]: Simplify 0 into 0
0.273 * [backup-simplify]: Simplify (+ (* -1 (* (/ 1 (/ 1 y)) 1)) (* 1 (pow (* 1 (/ 1 (/ 1 x))) 2))) into (- (pow x 2) y)
0.273 * [backup-simplify]: Simplify (- (* (/ 1 (- x)) (/ 1 (- x))) (/ 1 (- y))) into (+ (/ 1 (pow x 2)) (/ 1 y))
0.273 * [approximate]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in (x y) around 0
0.274 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in y
0.274 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.274 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.274 * [taylor]: Taking taylor expansion of x in y
0.274 * [backup-simplify]: Simplify x into x
0.274 * [backup-simplify]: Simplify (* x x) into (pow x 2)
0.274 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
0.274 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.274 * [taylor]: Taking taylor expansion of y in y
0.274 * [backup-simplify]: Simplify 0 into 0
0.274 * [backup-simplify]: Simplify 1 into 1
0.274 * [backup-simplify]: Simplify (/ 1 1) into 1
0.275 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in x
0.275 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.275 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.275 * [taylor]: Taking taylor expansion of x in x
0.275 * [backup-simplify]: Simplify 0 into 0
0.275 * [backup-simplify]: Simplify 1 into 1
0.275 * [backup-simplify]: Simplify (* 1 1) into 1
0.275 * [backup-simplify]: Simplify (/ 1 1) into 1
0.275 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.275 * [taylor]: Taking taylor expansion of y in x
0.276 * [backup-simplify]: Simplify y into y
0.276 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.276 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in x
0.276 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.276 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.276 * [taylor]: Taking taylor expansion of x in x
0.276 * [backup-simplify]: Simplify 0 into 0
0.276 * [backup-simplify]: Simplify 1 into 1
0.276 * [backup-simplify]: Simplify (* 1 1) into 1
0.276 * [backup-simplify]: Simplify (/ 1 1) into 1
0.277 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.277 * [taylor]: Taking taylor expansion of y in x
0.277 * [backup-simplify]: Simplify y into y
0.277 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.277 * [backup-simplify]: Simplify (+ 1 0) into 1
0.277 * [taylor]: Taking taylor expansion of 1 in y
0.277 * [backup-simplify]: Simplify 1 into 1
0.278 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
0.279 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.279 * [backup-simplify]: Simplify (+ 0 0) into 0
0.279 * [taylor]: Taking taylor expansion of 0 in y
0.279 * [backup-simplify]: Simplify 0 into 0
0.279 * [backup-simplify]: Simplify 1 into 1
0.280 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
0.281 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.281 * [backup-simplify]: Simplify (+ 0 (/ 1 y)) into (/ 1 y)
0.281 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.281 * [taylor]: Taking taylor expansion of y in y
0.281 * [backup-simplify]: Simplify 0 into 0
0.281 * [backup-simplify]: Simplify 1 into 1
0.282 * [backup-simplify]: Simplify (/ 1 1) into 1
0.282 * [backup-simplify]: Simplify 1 into 1
0.282 * [backup-simplify]: Simplify 0 into 0
0.282 * [backup-simplify]: Simplify 0 into 0
0.284 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
0.285 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.285 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
0.285 * [backup-simplify]: Simplify (+ 0 0) into 0
0.285 * [taylor]: Taking taylor expansion of 0 in y
0.285 * [backup-simplify]: Simplify 0 into 0
0.286 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.286 * [backup-simplify]: Simplify 0 into 0
0.286 * [backup-simplify]: Simplify 0 into 0
0.286 * [backup-simplify]: Simplify 0 into 0
0.287 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
0.288 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.288 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.289 * [backup-simplify]: Simplify (+ 0 0) into 0
0.289 * [taylor]: Taking taylor expansion of 0 in y
0.289 * [backup-simplify]: Simplify 0 into 0
0.289 * [backup-simplify]: Simplify 0 into 0
0.289 * [backup-simplify]: Simplify (+ (* 1 (* (/ 1 (/ 1 (- y))) 1)) (* 1 (pow (* 1 (/ 1 (/ 1 (- x)))) 2))) into (- (pow x 2) y)
0.289 * * * [progress]: simplifying candidates
0.290 * [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)
0.291 * * [simplify]: iteration 0: 51 enodes
0.311 * * [simplify]: iteration 1: 136 enodes
0.405 * * [simplify]: iteration 2: 567 enodes
1.422 * * [simplify]: iteration 3: 4365 enodes
2.975 * * [simplify]: iteration complete: 5000 enodes
2.975 * * [simplify]: Extracting #0: cost 17 inf + 0
2.977 * * [simplify]: Extracting #1: cost 622 inf + 0
2.991 * * [simplify]: Extracting #2: cost 1125 inf + 25144
3.037 * * [simplify]: Extracting #3: cost 212 inf + 147263
3.093 * * [simplify]: Extracting #4: cost 43 inf + 174388
3.146 * * [simplify]: Extracting #5: cost 3 inf + 187622
3.195 * * [simplify]: Extracting #6: cost 0 inf + 188528
3.271 * [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)
3.273 * * * [progress]: adding candidates to table
3.357 * * [progress]: iteration 2 / 4
3.357 * * * [progress]: picking best candidate
3.363 * * * * [pick]: Picked  #<alt (λ (x y) (* 0.5 (fma x x (- y))))>
3.364 * * * [progress]: localizing error
3.380 * * * [progress]: generating rewritten candidates
3.380 * * * [progress]: generating series expansions
3.380 * * * [progress]: simplifying candidates
3.380 * [simplify]: Simplifying:
  
3.380 * * [simplify]: iteration 0: 0 enodes
3.380 * * [simplify]: iteration complete: 0 enodes
3.380 * * [simplify]: Extracting #0: cost 0 inf + 0
3.380 * [simplify]: Simplified to:
  
3.380 * * * [progress]: adding candidates to table
3.381 * [progress]: [Phase 3 of 3] Extracting.
3.388 * [simplify]: Simplifying:
  (* 0.5 (fma x x (- y)))
3.388 * * [simplify]: iteration 0: 6 enodes
3.389 * * [simplify]: iteration 1: 7 enodes
3.389 * * [simplify]: iteration complete: 7 enodes
3.389 * * [simplify]: Extracting #0: cost 1 inf + 0
3.389 * * [simplify]: Extracting #1: cost 3 inf + 0
3.390 * * [simplify]: Extracting #2: cost 4 inf + 1
3.390 * * [simplify]: Extracting #3: cost 4 inf + 2
3.390 * * [simplify]: Extracting #4: cost 0 inf + 279
3.390 * [simplify]: Simplified to:
  (* (fma x x (- y)) 0.5)
4.563 * [regime-testing]: Baseline error score: 0.016002000250031255
4.572 * [regime-testing]: Oracle error score: 0.016002000250031255
4.573 * [regime-testing]: End program error score: 0.016002000250031255