42.979 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.020 * * * [progress]: [2/2] Setting up program.
0.023 * [progress]: [Phase 2 of 3] Improving.
0.023 * [simplify]: Simplifying:
  (- (* x x) (* y y))
0.023 * * [simplify]: iteration 0: 5 enodes
0.024 * * [simplify]: iteration 1: 11 enodes
0.025 * * [simplify]: iteration 2: 18 enodes
0.028 * * [simplify]: iteration 3: 35 enodes
0.034 * * [simplify]: iteration 4: 67 enodes
0.060 * * [simplify]: iteration 5: 160 enodes
0.123 * * [simplify]: iteration 6: 366 enodes
0.347 * * [simplify]: iteration 7: 901 enodes
1.683 * * [simplify]: iteration 8: 3866 enodes
3.203 * * [simplify]: iteration complete: 5000 enodes
3.203 * * [simplify]: Extracting #0: cost 1 inf + 0
3.205 * * [simplify]: Extracting #1: cost 251 inf + 0
3.211 * * [simplify]: Extracting #2: cost 671 inf + 485
3.217 * * [simplify]: Extracting #3: cost 153 inf + 5304
3.225 * * [simplify]: Extracting #4: cost 0 inf + 6977
3.229 * [simplify]: Simplified to:
  (- (* x x) (* y y))
3.229 * * [progress]: iteration 1 / 4
3.229 * * * [progress]: picking best candidate
3.232 * * * * [pick]: Picked  #<alt (λ (x y) (- (* x x) (* y y)))>
3.232 * * * [progress]: localizing error
3.240 * * * [progress]: generating rewritten candidates
3.240 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
3.252 * * * [progress]: generating series expansions
3.252 * * * * [progress]: [ 1 / 1 ] generating series at (2)
3.252 * [backup-simplify]: Simplify (- (* x x) (* y y)) into (- (pow x 2) (pow y 2))
3.252 * [approximate]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in (x y) around 0
3.252 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in y
3.252 * [taylor]: Taking taylor expansion of (pow x 2) in y
3.252 * [taylor]: Taking taylor expansion of x in y
3.252 * [backup-simplify]: Simplify x into x
3.252 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.252 * [taylor]: Taking taylor expansion of y in y
3.252 * [backup-simplify]: Simplify 0 into 0
3.252 * [backup-simplify]: Simplify 1 into 1
3.252 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
3.252 * [taylor]: Taking taylor expansion of (pow x 2) in x
3.252 * [taylor]: Taking taylor expansion of x in x
3.252 * [backup-simplify]: Simplify 0 into 0
3.252 * [backup-simplify]: Simplify 1 into 1
3.252 * [taylor]: Taking taylor expansion of (pow y 2) in x
3.252 * [taylor]: Taking taylor expansion of y in x
3.253 * [backup-simplify]: Simplify y into y
3.253 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
3.253 * [taylor]: Taking taylor expansion of (pow x 2) in x
3.253 * [taylor]: Taking taylor expansion of x in x
3.253 * [backup-simplify]: Simplify 0 into 0
3.253 * [backup-simplify]: Simplify 1 into 1
3.253 * [taylor]: Taking taylor expansion of (pow y 2) in x
3.253 * [taylor]: Taking taylor expansion of y in x
3.253 * [backup-simplify]: Simplify y into y
3.253 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.253 * [backup-simplify]: Simplify (- (pow y 2)) into (- (pow y 2))
3.253 * [backup-simplify]: Simplify (+ 0 (- (pow y 2))) into (- (pow y 2))
3.253 * [taylor]: Taking taylor expansion of (- (pow y 2)) in y
3.253 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.253 * [taylor]: Taking taylor expansion of y in y
3.253 * [backup-simplify]: Simplify 0 into 0
3.253 * [backup-simplify]: Simplify 1 into 1
3.253 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
3.254 * [backup-simplify]: Simplify (- 0) into 0
3.254 * [backup-simplify]: Simplify (+ 0 0) into 0
3.254 * [taylor]: Taking taylor expansion of 0 in y
3.254 * [backup-simplify]: Simplify 0 into 0
3.254 * [backup-simplify]: Simplify 0 into 0
3.255 * [backup-simplify]: Simplify (* 1 1) into 1
3.255 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
3.255 * [backup-simplify]: Simplify (- 0) into 0
3.256 * [backup-simplify]: Simplify (+ 1 0) into 1
3.256 * [taylor]: Taking taylor expansion of 1 in y
3.256 * [backup-simplify]: Simplify 1 into 1
3.256 * [backup-simplify]: Simplify 1 into 1
3.256 * [backup-simplify]: Simplify 0 into 0
3.256 * [backup-simplify]: Simplify (* 1 1) into 1
3.257 * [backup-simplify]: Simplify (- 1) into -1
3.257 * [backup-simplify]: Simplify -1 into -1
3.257 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.258 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))) into 0
3.258 * [backup-simplify]: Simplify (- 0) into 0
3.259 * [backup-simplify]: Simplify (+ 0 0) into 0
3.259 * [taylor]: Taking taylor expansion of 0 in y
3.259 * [backup-simplify]: Simplify 0 into 0
3.259 * [backup-simplify]: Simplify 0 into 0
3.259 * [backup-simplify]: Simplify 0 into 0
3.259 * [backup-simplify]: Simplify 0 into 0
3.259 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.260 * [backup-simplify]: Simplify (- 0) into 0
3.260 * [backup-simplify]: Simplify 0 into 0
3.260 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.261 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 y))))) into 0
3.262 * [backup-simplify]: Simplify (- 0) into 0
3.262 * [backup-simplify]: Simplify (+ 0 0) into 0
3.262 * [taylor]: Taking taylor expansion of 0 in y
3.262 * [backup-simplify]: Simplify 0 into 0
3.262 * [backup-simplify]: Simplify 0 into 0
3.262 * [backup-simplify]: Simplify 0 into 0
3.263 * [backup-simplify]: Simplify (+ (* -1 (pow (* y 1) 2)) (* 1 (pow (* 1 x) 2))) into (- (pow x 2) (pow y 2))
3.263 * [backup-simplify]: Simplify (- (* (/ 1 x) (/ 1 x)) (* (/ 1 y) (/ 1 y))) into (- (/ 1 (pow x 2)) (/ 1 (pow y 2)))
3.263 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
3.263 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
3.263 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
3.263 * [taylor]: Taking taylor expansion of (pow x 2) in y
3.263 * [taylor]: Taking taylor expansion of x in y
3.263 * [backup-simplify]: Simplify x into x
3.263 * [backup-simplify]: Simplify (* x x) into (pow x 2)
3.263 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
3.263 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
3.263 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.263 * [taylor]: Taking taylor expansion of y in y
3.263 * [backup-simplify]: Simplify 0 into 0
3.263 * [backup-simplify]: Simplify 1 into 1
3.264 * [backup-simplify]: Simplify (* 1 1) into 1
3.264 * [backup-simplify]: Simplify (/ 1 1) into 1
3.264 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
3.264 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
3.264 * [taylor]: Taking taylor expansion of (pow x 2) in x
3.264 * [taylor]: Taking taylor expansion of x in x
3.264 * [backup-simplify]: Simplify 0 into 0
3.264 * [backup-simplify]: Simplify 1 into 1
3.264 * [backup-simplify]: Simplify (* 1 1) into 1
3.265 * [backup-simplify]: Simplify (/ 1 1) into 1
3.265 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
3.265 * [taylor]: Taking taylor expansion of (pow y 2) in x
3.265 * [taylor]: Taking taylor expansion of y in x
3.265 * [backup-simplify]: Simplify y into y
3.265 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.265 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
3.265 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
3.265 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
3.265 * [taylor]: Taking taylor expansion of (pow x 2) in x
3.265 * [taylor]: Taking taylor expansion of x in x
3.265 * [backup-simplify]: Simplify 0 into 0
3.265 * [backup-simplify]: Simplify 1 into 1
3.265 * [backup-simplify]: Simplify (* 1 1) into 1
3.266 * [backup-simplify]: Simplify (/ 1 1) into 1
3.266 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
3.266 * [taylor]: Taking taylor expansion of (pow y 2) in x
3.266 * [taylor]: Taking taylor expansion of y in x
3.266 * [backup-simplify]: Simplify y into y
3.266 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.266 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
3.266 * [backup-simplify]: Simplify (+ 1 0) into 1
3.267 * [taylor]: Taking taylor expansion of 1 in y
3.267 * [backup-simplify]: Simplify 1 into 1
3.267 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.268 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.268 * [backup-simplify]: Simplify (+ 0 0) into 0
3.268 * [taylor]: Taking taylor expansion of 0 in y
3.268 * [backup-simplify]: Simplify 0 into 0
3.269 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.270 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.270 * [backup-simplify]: Simplify (- (/ 1 (pow y 2))) into (- (/ 1 (pow y 2)))
3.270 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 2)))) into (- (/ 1 (pow y 2)))
3.270 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
3.270 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
3.270 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.270 * [taylor]: Taking taylor expansion of y in y
3.270 * [backup-simplify]: Simplify 0 into 0
3.270 * [backup-simplify]: Simplify 1 into 1
3.270 * [backup-simplify]: Simplify (* 1 1) into 1
3.271 * [backup-simplify]: Simplify (/ 1 1) into 1
3.271 * [backup-simplify]: Simplify (- 1) into -1
3.271 * [backup-simplify]: Simplify -1 into -1
3.271 * [backup-simplify]: Simplify 1 into 1
3.272 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.273 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.273 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
3.273 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))))) into 0
3.274 * [backup-simplify]: Simplify (- 0) into 0
3.274 * [backup-simplify]: Simplify (+ 0 0) into 0
3.274 * [taylor]: Taking taylor expansion of 0 in y
3.274 * [backup-simplify]: Simplify 0 into 0
3.274 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.275 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.275 * [backup-simplify]: Simplify (- 0) into 0
3.275 * [backup-simplify]: Simplify 0 into 0
3.275 * [backup-simplify]: Simplify 0 into 0
3.276 * [backup-simplify]: Simplify 0 into 0
3.277 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.277 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.278 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
3.278 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))) (* 0 (/ 0 (pow y 2))))) into 0
3.278 * [backup-simplify]: Simplify (- 0) into 0
3.279 * [backup-simplify]: Simplify (+ 0 0) into 0
3.279 * [taylor]: Taking taylor expansion of 0 in y
3.279 * [backup-simplify]: Simplify 0 into 0
3.280 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.280 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.281 * [backup-simplify]: Simplify (- 0) into 0
3.281 * [backup-simplify]: Simplify 0 into 0
3.281 * [backup-simplify]: Simplify 0 into 0
3.281 * [backup-simplify]: Simplify 0 into 0
3.281 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 x))) 2)) (* -1 (pow (* (/ 1 (/ 1 y)) 1) 2))) into (- (pow x 2) (pow y 2))
3.281 * [backup-simplify]: Simplify (- (* (/ 1 (- x)) (/ 1 (- x))) (* (/ 1 (- y)) (/ 1 (- y)))) into (- (/ 1 (pow x 2)) (/ 1 (pow y 2)))
3.282 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
3.282 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
3.282 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
3.282 * [taylor]: Taking taylor expansion of (pow x 2) in y
3.282 * [taylor]: Taking taylor expansion of x in y
3.282 * [backup-simplify]: Simplify x into x
3.282 * [backup-simplify]: Simplify (* x x) into (pow x 2)
3.282 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
3.282 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
3.282 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.282 * [taylor]: Taking taylor expansion of y in y
3.282 * [backup-simplify]: Simplify 0 into 0
3.282 * [backup-simplify]: Simplify 1 into 1
3.282 * [backup-simplify]: Simplify (* 1 1) into 1
3.283 * [backup-simplify]: Simplify (/ 1 1) into 1
3.283 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
3.283 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
3.283 * [taylor]: Taking taylor expansion of (pow x 2) in x
3.283 * [taylor]: Taking taylor expansion of x in x
3.283 * [backup-simplify]: Simplify 0 into 0
3.283 * [backup-simplify]: Simplify 1 into 1
3.283 * [backup-simplify]: Simplify (* 1 1) into 1
3.283 * [backup-simplify]: Simplify (/ 1 1) into 1
3.283 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
3.283 * [taylor]: Taking taylor expansion of (pow y 2) in x
3.283 * [taylor]: Taking taylor expansion of y in x
3.283 * [backup-simplify]: Simplify y into y
3.284 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.284 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
3.284 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
3.284 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
3.284 * [taylor]: Taking taylor expansion of (pow x 2) in x
3.284 * [taylor]: Taking taylor expansion of x in x
3.284 * [backup-simplify]: Simplify 0 into 0
3.284 * [backup-simplify]: Simplify 1 into 1
3.284 * [backup-simplify]: Simplify (* 1 1) into 1
3.284 * [backup-simplify]: Simplify (/ 1 1) into 1
3.284 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
3.284 * [taylor]: Taking taylor expansion of (pow y 2) in x
3.284 * [taylor]: Taking taylor expansion of y in x
3.285 * [backup-simplify]: Simplify y into y
3.285 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.285 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
3.285 * [backup-simplify]: Simplify (+ 1 0) into 1
3.285 * [taylor]: Taking taylor expansion of 1 in y
3.285 * [backup-simplify]: Simplify 1 into 1
3.286 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.287 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.287 * [backup-simplify]: Simplify (+ 0 0) into 0
3.287 * [taylor]: Taking taylor expansion of 0 in y
3.287 * [backup-simplify]: Simplify 0 into 0
3.288 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.289 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.289 * [backup-simplify]: Simplify (- (/ 1 (pow y 2))) into (- (/ 1 (pow y 2)))
3.289 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 2)))) into (- (/ 1 (pow y 2)))
3.289 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
3.289 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
3.289 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.289 * [taylor]: Taking taylor expansion of y in y
3.289 * [backup-simplify]: Simplify 0 into 0
3.289 * [backup-simplify]: Simplify 1 into 1
3.289 * [backup-simplify]: Simplify (* 1 1) into 1
3.290 * [backup-simplify]: Simplify (/ 1 1) into 1
3.290 * [backup-simplify]: Simplify (- 1) into -1
3.290 * [backup-simplify]: Simplify -1 into -1
3.290 * [backup-simplify]: Simplify 1 into 1
3.291 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.292 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.292 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
3.292 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))))) into 0
3.292 * [backup-simplify]: Simplify (- 0) into 0
3.293 * [backup-simplify]: Simplify (+ 0 0) into 0
3.293 * [taylor]: Taking taylor expansion of 0 in y
3.293 * [backup-simplify]: Simplify 0 into 0
3.293 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.294 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.294 * [backup-simplify]: Simplify (- 0) into 0
3.294 * [backup-simplify]: Simplify 0 into 0
3.294 * [backup-simplify]: Simplify 0 into 0
3.294 * [backup-simplify]: Simplify 0 into 0
3.295 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.296 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.297 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
3.297 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))) (* 0 (/ 0 (pow y 2))))) into 0
3.297 * [backup-simplify]: Simplify (- 0) into 0
3.298 * [backup-simplify]: Simplify (+ 0 0) into 0
3.298 * [taylor]: Taking taylor expansion of 0 in y
3.298 * [backup-simplify]: Simplify 0 into 0
3.298 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.299 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.299 * [backup-simplify]: Simplify (- 0) into 0
3.299 * [backup-simplify]: Simplify 0 into 0
3.299 * [backup-simplify]: Simplify 0 into 0
3.300 * [backup-simplify]: Simplify 0 into 0
3.300 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 (- x)))) 2)) (* -1 (pow (* (/ 1 (/ 1 (- y))) 1) 2))) into (- (pow x 2) (pow y 2))
3.300 * * * [progress]: simplifying candidates
3.300 * [simplify]: Simplifying:
  (fma x x (- (* y y)))
  (fma (- y) y (* y y))
  (expm1 (- (* x x) (* y y)))
  (log1p (- (* x x) (* y y)))
  (- (* y y))
  (/ (exp (* x x)) (exp (* y y)))
  (log (- (* x x) (* y y)))
  (exp (- (* x x) (* y y)))
  (* (cbrt (- (* x x) (* y y))) (cbrt (- (* x x) (* y y))))
  (cbrt (- (* x x) (* y y)))
  (* (* (- (* x x) (* y y)) (- (* x x) (* y y))) (- (* x x) (* y y)))
  (sqrt (- (* x x) (* y y)))
  (sqrt (- (* x x) (* y y)))
  (- (pow (* x x) 3) (pow (* y y) 3))
  (+ (* (* x x) (* x x)) (+ (* (* y y) (* y y)) (* (* x x) (* y y))))
  (- (* y y))
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
  (+ (* x x) (* y y))
  (+ x y)
  (- x y)
  (- (* y y))
  (- (pow x 2) (pow y 2))
  (- (pow x 2) (pow y 2))
  (- (pow x 2) (pow y 2))
3.301 * * [simplify]: iteration 0: 38 enodes
3.312 * * [simplify]: iteration 1: 118 enodes
3.389 * * [simplify]: iteration 2: 646 enodes
3.739 * * [simplify]: iteration complete: 5000 enodes
3.739 * * [simplify]: Extracting #0: cost 17 inf + 0
3.740 * * [simplify]: Extracting #1: cost 513 inf + 0
3.744 * * [simplify]: Extracting #2: cost 1932 inf + 317
3.750 * * [simplify]: Extracting #3: cost 812 inf + 7627
3.756 * * [simplify]: Extracting #4: cost 122 inf + 13392
3.762 * * [simplify]: Extracting #5: cost 25 inf + 14080
3.768 * * [simplify]: Extracting #6: cost 0 inf + 14295
3.778 * [simplify]: Simplified to:
  (* (+ x y) (- x y))
  (* y (+ (- y) y))
  (expm1 (* (+ x y) (- x y)))
  (log1p (* (+ x y) (- x y)))
  (- (* y y))
  (pow (exp (+ x y)) (- x y))
  (log (* (+ x y) (- x y)))
  (pow (exp (+ x y)) (- x y))
  (* (cbrt (* (+ x y) (- x y))) (cbrt (* (+ x y) (- x y))))
  (cbrt (* (+ x y) (- x y)))
  (pow (* (+ x y) (- x y)) 3)
  (sqrt (* (+ x y) (- x y)))
  (sqrt (* (+ x y) (- x y)))
  (- (pow x 6) (pow y 6))
  (fma y (fma (* x x) y (pow y 3)) (pow x 4))
  (- (* y y))
  (- (pow x 4) (pow y 4))
  (fma x x (* y y))
  (+ x y)
  (- x y)
  (- (* y y))
  (* (+ x y) (- x y))
  (* (+ x y) (- x y))
  (* (+ x y) (- x y))
3.778 * * * [progress]: adding candidates to table
3.850 * * [progress]: iteration 2 / 4
3.850 * * * [progress]: picking best candidate
3.854 * * * * [pick]: Picked  #<alt (λ (x y) (+ (* (+ x y) (- x y)) (* y (+ (- y) y))))>
3.854 * * * [progress]: localizing error
3.872 * * * [progress]: generating rewritten candidates
3.872 * * * * [progress]: [ 1 / 1 ] rewriting at (2 1)
3.921 * * * [progress]: generating series expansions
3.921 * * * * [progress]: [ 1 / 1 ] generating series at (2 1)
3.922 * [backup-simplify]: Simplify (* (+ x y) (- x y)) into (* (+ x y) (- x y))
3.922 * [approximate]: Taking taylor expansion of (* (+ x y) (- x y)) in (x y) around 0
3.922 * [taylor]: Taking taylor expansion of (* (+ x y) (- x y)) in y
3.922 * [taylor]: Taking taylor expansion of (+ x y) in y
3.922 * [taylor]: Taking taylor expansion of x in y
3.922 * [backup-simplify]: Simplify x into x
3.922 * [taylor]: Taking taylor expansion of y in y
3.922 * [backup-simplify]: Simplify 0 into 0
3.922 * [backup-simplify]: Simplify 1 into 1
3.922 * [taylor]: Taking taylor expansion of (- x y) in y
3.922 * [taylor]: Taking taylor expansion of x in y
3.922 * [backup-simplify]: Simplify x into x
3.922 * [taylor]: Taking taylor expansion of y in y
3.922 * [backup-simplify]: Simplify 0 into 0
3.922 * [backup-simplify]: Simplify 1 into 1
3.922 * [taylor]: Taking taylor expansion of (* (+ x y) (- x y)) in x
3.922 * [taylor]: Taking taylor expansion of (+ x y) in x
3.922 * [taylor]: Taking taylor expansion of x in x
3.922 * [backup-simplify]: Simplify 0 into 0
3.922 * [backup-simplify]: Simplify 1 into 1
3.922 * [taylor]: Taking taylor expansion of y in x
3.922 * [backup-simplify]: Simplify y into y
3.922 * [taylor]: Taking taylor expansion of (- x y) in x
3.922 * [taylor]: Taking taylor expansion of x in x
3.922 * [backup-simplify]: Simplify 0 into 0
3.922 * [backup-simplify]: Simplify 1 into 1
3.922 * [taylor]: Taking taylor expansion of y in x
3.922 * [backup-simplify]: Simplify y into y
3.922 * [taylor]: Taking taylor expansion of (* (+ x y) (- x y)) in x
3.922 * [taylor]: Taking taylor expansion of (+ x y) in x
3.922 * [taylor]: Taking taylor expansion of x in x
3.922 * [backup-simplify]: Simplify 0 into 0
3.922 * [backup-simplify]: Simplify 1 into 1
3.922 * [taylor]: Taking taylor expansion of y in x
3.922 * [backup-simplify]: Simplify y into y
3.922 * [taylor]: Taking taylor expansion of (- x y) in x
3.922 * [taylor]: Taking taylor expansion of x in x
3.922 * [backup-simplify]: Simplify 0 into 0
3.923 * [backup-simplify]: Simplify 1 into 1
3.923 * [taylor]: Taking taylor expansion of y in x
3.923 * [backup-simplify]: Simplify y into y
3.923 * [backup-simplify]: Simplify (+ 0 y) into y
3.923 * [backup-simplify]: Simplify (- y) into (- y)
3.923 * [backup-simplify]: Simplify (+ 0 (- y)) into (- y)
3.923 * [backup-simplify]: Simplify (* y (- y)) into (* -1 (pow y 2))
3.923 * [taylor]: Taking taylor expansion of (* -1 (pow y 2)) in y
3.923 * [taylor]: Taking taylor expansion of -1 in y
3.923 * [backup-simplify]: Simplify -1 into -1
3.923 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.923 * [taylor]: Taking taylor expansion of y in y
3.923 * [backup-simplify]: Simplify 0 into 0
3.923 * [backup-simplify]: Simplify 1 into 1
3.924 * [backup-simplify]: Simplify (- 0) into 0
3.924 * [backup-simplify]: Simplify (+ 1 0) into 1
3.924 * [backup-simplify]: Simplify (+ 1 0) into 1
3.924 * [backup-simplify]: Simplify (+ (* y 1) (* 1 (- y))) into 0
3.924 * [taylor]: Taking taylor expansion of 0 in y
3.924 * [backup-simplify]: Simplify 0 into 0
3.925 * [backup-simplify]: Simplify 0 into 0
3.925 * [backup-simplify]: Simplify (- 0) into 0
3.925 * [backup-simplify]: Simplify (+ 0 0) into 0
3.925 * [backup-simplify]: Simplify (+ 0 0) into 0
3.926 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 1 1) (* 0 (- y)))) into 1
3.926 * [taylor]: Taking taylor expansion of 1 in y
3.926 * [backup-simplify]: Simplify 1 into 1
3.926 * [backup-simplify]: Simplify 1 into 1
3.926 * [backup-simplify]: Simplify 0 into 0
3.926 * [backup-simplify]: Simplify (* 1 1) into 1
3.927 * [backup-simplify]: Simplify (* -1 1) into -1
3.927 * [backup-simplify]: Simplify -1 into -1
3.927 * [backup-simplify]: Simplify (- 0) into 0
3.927 * [backup-simplify]: Simplify (+ 0 0) into 0
3.928 * [backup-simplify]: Simplify (+ 0 0) into 0
3.929 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 1 0) (+ (* 0 1) (* 0 (- y))))) into 0
3.929 * [taylor]: Taking taylor expansion of 0 in y
3.929 * [backup-simplify]: Simplify 0 into 0
3.929 * [backup-simplify]: Simplify 0 into 0
3.929 * [backup-simplify]: Simplify 0 into 0
3.929 * [backup-simplify]: Simplify 0 into 0
3.929 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.930 * [backup-simplify]: Simplify (+ (* -1 0) (* 0 1)) into 0
3.930 * [backup-simplify]: Simplify 0 into 0
3.930 * [backup-simplify]: Simplify (- 0) into 0
3.931 * [backup-simplify]: Simplify (+ 0 0) into 0
3.931 * [backup-simplify]: Simplify (+ 0 0) into 0
3.932 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 1) (* 0 (- y)))))) into 0
3.932 * [taylor]: Taking taylor expansion of 0 in y
3.932 * [backup-simplify]: Simplify 0 into 0
3.932 * [backup-simplify]: Simplify 0 into 0
3.932 * [backup-simplify]: Simplify 0 into 0
3.933 * [backup-simplify]: Simplify (+ (* -1 (pow (* y 1) 2)) (* 1 (pow (* 1 x) 2))) into (- (pow x 2) (pow y 2))
3.933 * [backup-simplify]: Simplify (* (+ (/ 1 x) (/ 1 y)) (- (/ 1 x) (/ 1 y))) into (* (+ (/ 1 x) (/ 1 y)) (- (/ 1 x) (/ 1 y)))
3.933 * [approximate]: Taking taylor expansion of (* (+ (/ 1 x) (/ 1 y)) (- (/ 1 x) (/ 1 y))) in (x y) around 0
3.933 * [taylor]: Taking taylor expansion of (* (+ (/ 1 x) (/ 1 y)) (- (/ 1 x) (/ 1 y))) in y
3.933 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in y
3.933 * [taylor]: Taking taylor expansion of (/ 1 x) in y
3.933 * [taylor]: Taking taylor expansion of x in y
3.933 * [backup-simplify]: Simplify x into x
3.933 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
3.933 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.933 * [taylor]: Taking taylor expansion of y in y
3.933 * [backup-simplify]: Simplify 0 into 0
3.933 * [backup-simplify]: Simplify 1 into 1
3.933 * [backup-simplify]: Simplify (/ 1 1) into 1
3.934 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in y
3.934 * [taylor]: Taking taylor expansion of (/ 1 x) in y
3.934 * [taylor]: Taking taylor expansion of x in y
3.934 * [backup-simplify]: Simplify x into x
3.934 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
3.934 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.934 * [taylor]: Taking taylor expansion of y in y
3.934 * [backup-simplify]: Simplify 0 into 0
3.934 * [backup-simplify]: Simplify 1 into 1
3.934 * [backup-simplify]: Simplify (/ 1 1) into 1
3.934 * [taylor]: Taking taylor expansion of (* (+ (/ 1 x) (/ 1 y)) (- (/ 1 x) (/ 1 y))) in x
3.934 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in x
3.934 * [taylor]: Taking taylor expansion of (/ 1 x) in x
3.934 * [taylor]: Taking taylor expansion of x in x
3.934 * [backup-simplify]: Simplify 0 into 0
3.934 * [backup-simplify]: Simplify 1 into 1
3.935 * [backup-simplify]: Simplify (/ 1 1) into 1
3.935 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.935 * [taylor]: Taking taylor expansion of y in x
3.935 * [backup-simplify]: Simplify y into y
3.935 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
3.935 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
3.935 * [taylor]: Taking taylor expansion of (/ 1 x) in x
3.935 * [taylor]: Taking taylor expansion of x in x
3.935 * [backup-simplify]: Simplify 0 into 0
3.935 * [backup-simplify]: Simplify 1 into 1
3.935 * [backup-simplify]: Simplify (/ 1 1) into 1
3.935 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.935 * [taylor]: Taking taylor expansion of y in x
3.935 * [backup-simplify]: Simplify y into y
3.935 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
3.935 * [taylor]: Taking taylor expansion of (* (+ (/ 1 x) (/ 1 y)) (- (/ 1 x) (/ 1 y))) in x
3.935 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in x
3.935 * [taylor]: Taking taylor expansion of (/ 1 x) in x
3.935 * [taylor]: Taking taylor expansion of x in x
3.935 * [backup-simplify]: Simplify 0 into 0
3.935 * [backup-simplify]: Simplify 1 into 1
3.936 * [backup-simplify]: Simplify (/ 1 1) into 1
3.936 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.936 * [taylor]: Taking taylor expansion of y in x
3.936 * [backup-simplify]: Simplify y into y
3.936 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
3.936 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
3.936 * [taylor]: Taking taylor expansion of (/ 1 x) in x
3.936 * [taylor]: Taking taylor expansion of x in x
3.936 * [backup-simplify]: Simplify 0 into 0
3.936 * [backup-simplify]: Simplify 1 into 1
3.936 * [backup-simplify]: Simplify (/ 1 1) into 1
3.936 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.936 * [taylor]: Taking taylor expansion of y in x
3.936 * [backup-simplify]: Simplify y into y
3.937 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
3.937 * [backup-simplify]: Simplify (+ 1 0) into 1
3.937 * [backup-simplify]: Simplify (+ 1 0) into 1
3.938 * [backup-simplify]: Simplify (* 1 1) into 1
3.938 * [taylor]: Taking taylor expansion of 1 in y
3.938 * [backup-simplify]: Simplify 1 into 1
3.938 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.938 * [backup-simplify]: Simplify (- (/ 1 y)) into (- (/ 1 y))
3.939 * [backup-simplify]: Simplify (+ 0 (- (/ 1 y))) into (- (/ 1 y))
3.939 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.939 * [backup-simplify]: Simplify (+ 0 (/ 1 y)) into (/ 1 y)
3.939 * [backup-simplify]: Simplify (+ (* 1 (- (/ 1 y))) (* (/ 1 y) 1)) into 0
3.939 * [taylor]: Taking taylor expansion of 0 in y
3.940 * [backup-simplify]: Simplify 0 into 0
3.940 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.940 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
3.941 * [backup-simplify]: Simplify (- 0) into 0
3.941 * [backup-simplify]: Simplify (+ 0 0) into 0
3.942 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.942 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
3.942 * [backup-simplify]: Simplify (+ 0 0) into 0
3.943 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* (/ 1 y) (- (/ 1 y))) (* 0 1))) into (- (/ 1 (pow y 2)))
3.943 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
3.943 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
3.943 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.943 * [taylor]: Taking taylor expansion of y in y
3.943 * [backup-simplify]: Simplify 0 into 0
3.944 * [backup-simplify]: Simplify 1 into 1
3.944 * [backup-simplify]: Simplify (* 1 1) into 1
3.944 * [backup-simplify]: Simplify (/ 1 1) into 1
3.944 * [backup-simplify]: Simplify (- 1) into -1
3.945 * [backup-simplify]: Simplify -1 into -1
3.945 * [backup-simplify]: Simplify 1 into 1
3.945 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.946 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
3.946 * [backup-simplify]: Simplify (- 0) into 0
3.946 * [backup-simplify]: Simplify (+ 0 0) into 0
3.947 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.947 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
3.947 * [backup-simplify]: Simplify (+ 0 0) into 0
3.948 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* (/ 1 y) 0) (+ (* 0 (- (/ 1 y))) (* 0 1)))) into 0
3.948 * [taylor]: Taking taylor expansion of 0 in y
3.948 * [backup-simplify]: Simplify 0 into 0
3.949 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.950 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.950 * [backup-simplify]: Simplify (- 0) into 0
3.950 * [backup-simplify]: Simplify 0 into 0
3.950 * [backup-simplify]: Simplify 0 into 0
3.950 * [backup-simplify]: Simplify 0 into 0
3.951 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.951 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) into 0
3.951 * [backup-simplify]: Simplify (- 0) into 0
3.956 * [backup-simplify]: Simplify (+ 0 0) into 0
3.957 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.957 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) into 0
3.957 * [backup-simplify]: Simplify (+ 0 0) into 0
3.958 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* (/ 1 y) 0) (+ (* 0 0) (+ (* 0 (- (/ 1 y))) (* 0 1))))) into 0
3.958 * [taylor]: Taking taylor expansion of 0 in y
3.958 * [backup-simplify]: Simplify 0 into 0
3.959 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.959 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.959 * [backup-simplify]: Simplify (- 0) into 0
3.959 * [backup-simplify]: Simplify 0 into 0
3.959 * [backup-simplify]: Simplify 0 into 0
3.960 * [backup-simplify]: Simplify 0 into 0
3.960 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 x))) 2)) (* -1 (pow (* (/ 1 (/ 1 y)) 1) 2))) into (- (pow x 2) (pow y 2))
3.960 * [backup-simplify]: Simplify (* (+ (/ 1 (- x)) (/ 1 (- y))) (- (/ 1 (- x)) (/ 1 (- y)))) into (* -1 (* (- (/ 1 y) (/ 1 x)) (+ (/ 1 x) (/ 1 y))))
3.960 * [approximate]: Taking taylor expansion of (* -1 (* (- (/ 1 y) (/ 1 x)) (+ (/ 1 x) (/ 1 y)))) in (x y) around 0
3.960 * [taylor]: Taking taylor expansion of (* -1 (* (- (/ 1 y) (/ 1 x)) (+ (/ 1 x) (/ 1 y)))) in y
3.960 * [taylor]: Taking taylor expansion of -1 in y
3.960 * [backup-simplify]: Simplify -1 into -1
3.960 * [taylor]: Taking taylor expansion of (* (- (/ 1 y) (/ 1 x)) (+ (/ 1 x) (/ 1 y))) in y
3.960 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in y
3.960 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.960 * [taylor]: Taking taylor expansion of y in y
3.960 * [backup-simplify]: Simplify 0 into 0
3.960 * [backup-simplify]: Simplify 1 into 1
3.961 * [backup-simplify]: Simplify (/ 1 1) into 1
3.961 * [taylor]: Taking taylor expansion of (/ 1 x) in y
3.961 * [taylor]: Taking taylor expansion of x in y
3.961 * [backup-simplify]: Simplify x into x
3.961 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
3.961 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in y
3.961 * [taylor]: Taking taylor expansion of (/ 1 x) in y
3.961 * [taylor]: Taking taylor expansion of x in y
3.961 * [backup-simplify]: Simplify x into x
3.961 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
3.961 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.961 * [taylor]: Taking taylor expansion of y in y
3.961 * [backup-simplify]: Simplify 0 into 0
3.961 * [backup-simplify]: Simplify 1 into 1
3.961 * [backup-simplify]: Simplify (/ 1 1) into 1
3.961 * [taylor]: Taking taylor expansion of (* -1 (* (- (/ 1 y) (/ 1 x)) (+ (/ 1 x) (/ 1 y)))) in x
3.962 * [taylor]: Taking taylor expansion of -1 in x
3.962 * [backup-simplify]: Simplify -1 into -1
3.962 * [taylor]: Taking taylor expansion of (* (- (/ 1 y) (/ 1 x)) (+ (/ 1 x) (/ 1 y))) in x
3.962 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
3.962 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.962 * [taylor]: Taking taylor expansion of y in x
3.962 * [backup-simplify]: Simplify y into y
3.962 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
3.962 * [taylor]: Taking taylor expansion of (/ 1 x) in x
3.962 * [taylor]: Taking taylor expansion of x in x
3.962 * [backup-simplify]: Simplify 0 into 0
3.962 * [backup-simplify]: Simplify 1 into 1
3.962 * [backup-simplify]: Simplify (/ 1 1) into 1
3.962 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in x
3.962 * [taylor]: Taking taylor expansion of (/ 1 x) in x
3.962 * [taylor]: Taking taylor expansion of x in x
3.962 * [backup-simplify]: Simplify 0 into 0
3.962 * [backup-simplify]: Simplify 1 into 1
3.963 * [backup-simplify]: Simplify (/ 1 1) into 1
3.963 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.963 * [taylor]: Taking taylor expansion of y in x
3.963 * [backup-simplify]: Simplify y into y
3.963 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
3.963 * [taylor]: Taking taylor expansion of (* -1 (* (- (/ 1 y) (/ 1 x)) (+ (/ 1 x) (/ 1 y)))) in x
3.963 * [taylor]: Taking taylor expansion of -1 in x
3.963 * [backup-simplify]: Simplify -1 into -1
3.963 * [taylor]: Taking taylor expansion of (* (- (/ 1 y) (/ 1 x)) (+ (/ 1 x) (/ 1 y))) in x
3.963 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
3.963 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.963 * [taylor]: Taking taylor expansion of y in x
3.963 * [backup-simplify]: Simplify y into y
3.963 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
3.963 * [taylor]: Taking taylor expansion of (/ 1 x) in x
3.963 * [taylor]: Taking taylor expansion of x in x
3.963 * [backup-simplify]: Simplify 0 into 0
3.963 * [backup-simplify]: Simplify 1 into 1
3.963 * [backup-simplify]: Simplify (/ 1 1) into 1
3.963 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in x
3.964 * [taylor]: Taking taylor expansion of (/ 1 x) in x
3.964 * [taylor]: Taking taylor expansion of x in x
3.964 * [backup-simplify]: Simplify 0 into 0
3.964 * [backup-simplify]: Simplify 1 into 1
3.964 * [backup-simplify]: Simplify (/ 1 1) into 1
3.964 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.964 * [taylor]: Taking taylor expansion of y in x
3.964 * [backup-simplify]: Simplify y into y
3.964 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
3.964 * [backup-simplify]: Simplify (- 1) into -1
3.965 * [backup-simplify]: Simplify (+ 0 -1) into -1
3.965 * [backup-simplify]: Simplify (+ 1 0) into 1
3.966 * [backup-simplify]: Simplify (* -1 1) into -1
3.966 * [backup-simplify]: Simplify (* -1 -1) into 1
3.966 * [taylor]: Taking taylor expansion of 1 in y
3.966 * [backup-simplify]: Simplify 1 into 1
3.967 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.967 * [backup-simplify]: Simplify (+ 0 (/ 1 y)) into (/ 1 y)
3.967 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.968 * [backup-simplify]: Simplify (- 0) into 0
3.968 * [backup-simplify]: Simplify (+ (/ 1 y) 0) into (/ 1 y)
3.968 * [backup-simplify]: Simplify (+ (* -1 (/ 1 y)) (* (/ 1 y) 1)) into 0
3.968 * [backup-simplify]: Simplify (+ (* -1 0) (* 0 -1)) into 0
3.968 * [taylor]: Taking taylor expansion of 0 in y
3.968 * [backup-simplify]: Simplify 0 into 0
3.969 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.969 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
3.970 * [backup-simplify]: Simplify (+ 0 0) into 0
3.970 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
3.971 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.971 * [backup-simplify]: Simplify (- 0) into 0
3.971 * [backup-simplify]: Simplify (+ 0 0) into 0
3.972 * [backup-simplify]: Simplify (+ (* -1 0) (+ (* (/ 1 y) (/ 1 y)) (* 0 1))) into (/ 1 (pow y 2))
3.973 * [backup-simplify]: Simplify (+ (* -1 (/ 1 (pow y 2))) (+ (* 0 0) (* 0 -1))) into (- (/ 1 (pow y 2)))
3.973 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
3.973 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
3.973 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.973 * [taylor]: Taking taylor expansion of y in y
3.973 * [backup-simplify]: Simplify 0 into 0
3.973 * [backup-simplify]: Simplify 1 into 1
3.974 * [backup-simplify]: Simplify (* 1 1) into 1
3.974 * [backup-simplify]: Simplify (/ 1 1) into 1
3.974 * [backup-simplify]: Simplify (- 1) into -1
3.974 * [backup-simplify]: Simplify -1 into -1
3.974 * [backup-simplify]: Simplify 1 into 1
3.975 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.975 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
3.975 * [backup-simplify]: Simplify (+ 0 0) into 0
3.976 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
3.976 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.977 * [backup-simplify]: Simplify (- 0) into 0
3.977 * [backup-simplify]: Simplify (+ 0 0) into 0
3.978 * [backup-simplify]: Simplify (+ (* -1 0) (+ (* (/ 1 y) 0) (+ (* 0 (/ 1 y)) (* 0 1)))) into 0
3.979 * [backup-simplify]: Simplify (+ (* -1 0) (+ (* 0 (/ 1 (pow y 2))) (+ (* 0 0) (* 0 -1)))) into 0
3.979 * [taylor]: Taking taylor expansion of 0 in y
3.979 * [backup-simplify]: Simplify 0 into 0
3.979 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.980 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.980 * [backup-simplify]: Simplify (- 0) into 0
3.980 * [backup-simplify]: Simplify 0 into 0
3.980 * [backup-simplify]: Simplify 0 into 0
3.980 * [backup-simplify]: Simplify 0 into 0
3.981 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.981 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) into 0
3.982 * [backup-simplify]: Simplify (+ 0 0) into 0
3.982 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) into 0
3.983 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.983 * [backup-simplify]: Simplify (- 0) into 0
3.983 * [backup-simplify]: Simplify (+ 0 0) into 0
3.984 * [backup-simplify]: Simplify (+ (* -1 0) (+ (* (/ 1 y) 0) (+ (* 0 0) (+ (* 0 (/ 1 y)) (* 0 1))))) into 0
3.986 * [backup-simplify]: Simplify (+ (* -1 0) (+ (* 0 0) (+ (* 0 (/ 1 (pow y 2))) (+ (* 0 0) (* 0 -1))))) into 0
3.986 * [taylor]: Taking taylor expansion of 0 in y
3.986 * [backup-simplify]: Simplify 0 into 0
3.986 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.987 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.987 * [backup-simplify]: Simplify (- 0) into 0
3.987 * [backup-simplify]: Simplify 0 into 0
3.988 * [backup-simplify]: Simplify 0 into 0
3.988 * [backup-simplify]: Simplify 0 into 0
3.988 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 (- x)))) 2)) (* -1 (pow (* (/ 1 (/ 1 (- y))) 1) 2))) into (- (pow x 2) (pow y 2))
3.988 * * * [progress]: simplifying candidates
3.989 * [simplify]: Simplifying:
  (expm1 (* (+ x y) (- x y)))
  (log1p (* (+ x y) (- x y)))
  (* (+ x y) (- x y))
  (+ (log (+ x y)) (log (- x y)))
  (log (* (+ x y) (- x y)))
  (exp (* (+ x y) (- x y)))
  (* (* (* (+ x y) (+ x y)) (+ x y)) (* (* (- x y) (- x y)) (- x y)))
  (* (cbrt (* (+ x y) (- x y))) (cbrt (* (+ x y) (- x y))))
  (cbrt (* (+ x y) (- x y)))
  (* (* (* (+ x y) (- x y)) (* (+ x y) (- x y))) (* (+ x y) (- x y)))
  (sqrt (* (+ x y) (- x y)))
  (sqrt (* (+ x y) (- x y)))
  (* (+ (pow x 3) (pow y 3)) (- (pow x 3) (pow y 3)))
  (* (+ (* x x) (- (* y y) (* x y))) (+ (* x x) (+ (* y y) (* x y))))
  (* (+ (pow x 3) (pow y 3)) (- (* x x) (* y y)))
  (* (+ (* x x) (- (* y y) (* x y))) (+ x y))
  (* (- (* x x) (* y y)) (- (pow x 3) (pow y 3)))
  (* (- x y) (+ (* x x) (+ (* y y) (* x y))))
  (* (- (* x x) (* y y)) (- (* x x) (* y y)))
  (* (- x y) (+ x y))
  (* (sqrt (+ x y)) (sqrt (- x y)))
  (* (sqrt (+ x y)) (sqrt (- x y)))
  (* (+ x y) (fma (* (cbrt x) (cbrt x)) (cbrt x) (- (* (cbrt y) (* (cbrt y) (cbrt y))))))
  (* (+ x y) (fma (- (cbrt y)) (* (cbrt y) (cbrt y)) (* (cbrt y) (* (cbrt y) (cbrt y)))))
  (* (+ x y) (fma (* (cbrt x) (cbrt x)) (cbrt x) (- (* (sqrt y) (sqrt y)))))
  (* (+ x y) (fma (- (sqrt y)) (sqrt y) (* (sqrt y) (sqrt y))))
  (* (+ x y) (fma (* (cbrt x) (cbrt x)) (cbrt x) (- (* y 1))))
  (* (+ x y) (fma (- y) 1 (* y 1)))
  (* (+ x y) (fma (sqrt x) (sqrt x) (- (* (cbrt y) (* (cbrt y) (cbrt y))))))
  (* (+ x y) (fma (- (cbrt y)) (* (cbrt y) (cbrt y)) (* (cbrt y) (* (cbrt y) (cbrt y)))))
  (* (+ x y) (fma (sqrt x) (sqrt x) (- (* (sqrt y) (sqrt y)))))
  (* (+ x y) (fma (- (sqrt y)) (sqrt y) (* (sqrt y) (sqrt y))))
  (* (+ x y) (fma (sqrt x) (sqrt x) (- (* y 1))))
  (* (+ x y) (fma (- y) 1 (* y 1)))
  (* (+ x y) (fma 1 x (- (* (cbrt y) (* (cbrt y) (cbrt y))))))
  (* (+ x y) (fma (- (cbrt y)) (* (cbrt y) (cbrt y)) (* (cbrt y) (* (cbrt y) (cbrt y)))))
  (* (+ x y) (fma 1 x (- (* (sqrt y) (sqrt y)))))
  (* (+ x y) (fma (- (sqrt y)) (sqrt y) (* (sqrt y) (sqrt y))))
  (* (+ x y) (fma 1 x (- (* y 1))))
  (* (+ x y) (fma (- y) 1 (* y 1)))
  (* (+ x y) x)
  (* (+ x y) (- y))
  (* (+ x y) x)
  (* (+ x y) (- y))
  (* (fma (* (cbrt x) (cbrt x)) (cbrt x) (- (* (cbrt y) (* (cbrt y) (cbrt y))))) (+ x y))
  (* (fma (- (cbrt y)) (* (cbrt y) (cbrt y)) (* (cbrt y) (* (cbrt y) (cbrt y)))) (+ x y))
  (* (fma (* (cbrt x) (cbrt x)) (cbrt x) (- (* (sqrt y) (sqrt y)))) (+ x y))
  (* (fma (- (sqrt y)) (sqrt y) (* (sqrt y) (sqrt y))) (+ x y))
  (* (fma (* (cbrt x) (cbrt x)) (cbrt x) (- (* y 1))) (+ x y))
  (* (fma (- y) 1 (* y 1)) (+ x y))
  (* (fma (sqrt x) (sqrt x) (- (* (cbrt y) (* (cbrt y) (cbrt y))))) (+ x y))
  (* (fma (- (cbrt y)) (* (cbrt y) (cbrt y)) (* (cbrt y) (* (cbrt y) (cbrt y)))) (+ x y))
  (* (fma (sqrt x) (sqrt x) (- (* (sqrt y) (sqrt y)))) (+ x y))
  (* (fma (- (sqrt y)) (sqrt y) (* (sqrt y) (sqrt y))) (+ x y))
  (* (fma (sqrt x) (sqrt x) (- (* y 1))) (+ x y))
  (* (fma (- y) 1 (* y 1)) (+ x y))
  (* (fma 1 x (- (* (cbrt y) (* (cbrt y) (cbrt y))))) (+ x y))
  (* (fma (- (cbrt y)) (* (cbrt y) (cbrt y)) (* (cbrt y) (* (cbrt y) (cbrt y)))) (+ x y))
  (* (fma 1 x (- (* (sqrt y) (sqrt y)))) (+ x y))
  (* (fma (- (sqrt y)) (sqrt y) (* (sqrt y) (sqrt y))) (+ x y))
  (* (fma 1 x (- (* y 1))) (+ x y))
  (* (fma (- y) 1 (* y 1)) (+ x y))
  (* x (+ x y))
  (* (- y) (+ x y))
  (* x (+ x y))
  (* (- y) (+ x y))
  (* (+ x y) (* (cbrt (- x y)) (cbrt (- x y))))
  (* (+ x y) (sqrt (- x y)))
  (* (+ x y) 1)
  (* (+ x y) (+ (sqrt x) (sqrt y)))
  (* (+ x y) 1)
  (* (cbrt (+ x y)) (- x y))
  (* (sqrt (+ x y)) (- x y))
  (* (+ x y) (- x y))
  (* (+ x y) (- x y))
  (* (+ x y) (- (pow x 3) (pow y 3)))
  (* (+ x y) (- (* x x) (* y y)))
  (* (+ (pow x 3) (pow y 3)) (- x y))
  (* (- (* x x) (* y y)) (- x y))
  (- (pow x 2) (pow y 2))
  (- (pow x 2) (pow y 2))
  (- (pow x 2) (pow y 2))
3.991 * * [simplify]: iteration 0: 120 enodes
4.025 * * [simplify]: iteration 1: 401 enodes
4.328 * * [simplify]: iteration 2: 2818 enodes
5.991 * * [simplify]: iteration complete: 5000 enodes
5.991 * * [simplify]: Extracting #0: cost 32 inf + 0
5.994 * * [simplify]: Extracting #1: cost 990 inf + 0
6.002 * * [simplify]: Extracting #2: cost 1496 inf + 185
6.011 * * [simplify]: Extracting #3: cost 656 inf + 4963
6.019 * * [simplify]: Extracting #4: cost 132 inf + 9258
6.026 * * [simplify]: Extracting #5: cost 53 inf + 9912
6.034 * * [simplify]: Extracting #6: cost 13 inf + 9989
6.045 * * [simplify]: Extracting #7: cost 0 inf + 10056
6.054 * [simplify]: Simplified to:
  (expm1 (* (- x y) (+ y x)))
  (log1p (* (- x y) (+ y x)))
  (* (- x y) (+ y x))
  (log (* (- x y) (+ y x)))
  (log (* (- x y) (+ y x)))
  (pow (exp (- x y)) (+ x y))
  (pow (* (- x y) (+ y x)) 3)
  (* (cbrt (* (- x y) (+ y x))) (cbrt (* (- x y) (+ y x))))
  (cbrt (* (- x y) (+ y x)))
  (pow (* (- x y) (+ y x)) 3)
  (sqrt (* (- x y) (+ y x)))
  (sqrt (* (- x y) (+ y x)))
  (* (+ (pow y 3) (pow x 3)) (- (pow x 3) (pow y 3)))
  (* (fma x x (* y (+ y x))) (fma x x (* y (- y x))))
  (* (fma x x (* y (- y))) (+ (pow y 3) (pow x 3)))
  (* (fma x x (* y (- y x))) (+ x y))
  (* (- (pow x 3) (pow y 3)) (fma x x (* y (- y))))
  (* (fma x x (* y (+ y x))) (- x y))
  (* (fma x x (* y (- y))) (fma x x (* y (- y))))
  (* (- x y) (+ y x))
  (* (sqrt (+ y x)) (sqrt (- x y)))
  (* (sqrt (+ y x)) (sqrt (- x y)))
  (* (- (pow (cbrt x) 3) y) (+ x y))
  (* (fma -1 y y) (+ x y))
  (* (- (pow (cbrt x) 3) y) (+ x y))
  (* (fma -1 y y) (+ x y))
  (* (- (pow (cbrt x) 3) y) (+ x y))
  (* (fma -1 y y) (+ x y))
  (* (- x y) (+ y x))
  (* (fma -1 y y) (+ x y))
  (* (- x y) (+ y x))
  (* (fma -1 y y) (+ x y))
  (* (- x y) (+ y x))
  (* (fma -1 y y) (+ x y))
  (* (- x y) (+ y x))
  (* (fma -1 y y) (+ x y))
  (* (- x y) (+ y x))
  (* (fma -1 y y) (+ x y))
  (* (- x y) (+ y x))
  (* (fma -1 y y) (+ x y))
  (* x (+ y x))
  (- (* (+ y x) y))
  (* x (+ y x))
  (- (* (+ y x) y))
  (* (- (pow (cbrt x) 3) y) (+ x y))
  (* (fma -1 y y) (+ x y))
  (* (- (pow (cbrt x) 3) y) (+ x y))
  (* (fma -1 y y) (+ x y))
  (* (- (pow (cbrt x) 3) y) (+ x y))
  (* (fma -1 y y) (+ x y))
  (* (- x y) (+ y x))
  (* (fma -1 y y) (+ x y))
  (* (- x y) (+ y x))
  (* (fma -1 y y) (+ x y))
  (* (- x y) (+ y x))
  (* (fma -1 y y) (+ x y))
  (* (- x y) (+ y x))
  (* (fma -1 y y) (+ x y))
  (* (- x y) (+ y x))
  (* (fma -1 y y) (+ x y))
  (* (- x y) (+ y x))
  (* (fma -1 y y) (+ x y))
  (* x (+ y x))
  (- (* (+ y x) y))
  (* x (+ y x))
  (- (* (+ y x) y))
  (* (* (cbrt (- x y)) (cbrt (- x y))) (+ y x))
  (* (sqrt (- x y)) (+ y x))
  (+ y x)
  (* (+ (sqrt y) (sqrt x)) (+ y x))
  (+ y x)
  (* (cbrt (+ y x)) (- x y))
  (* (sqrt (+ y x)) (- x y))
  (* (- x y) (+ y x))
  (* (- x y) (+ y x))
  (* (- (pow x 3) (pow y 3)) (+ y x))
  (* (+ y x) (fma x x (* y (- y))))
  (* (- x y) (+ (pow y 3) (pow x 3)))
  (* (- x y) (fma x x (* y (- y))))
  (fma x x (* y (- y)))
  (fma x x (* y (- y)))
  (fma x x (* y (- y)))
6.055 * * * [progress]: adding candidates to table
6.254 * [progress]: [Phase 3 of 3] Extracting.
6.254 * * [regime]: Finding splitpoints for: (#<alt (λ (x y) (- (* x x) (* y y)))> #<alt (λ (x y) (+ (* (+ x y) (- x y)) (* y (+ (- y) y))))>)
6.254 * * * [regime-changes]: Trying 5 branch expressions: ((* y y) (* x x) (- (* x x) (* y y)) y x)
6.254 * * * * [regimes]: Trying to branch on (* y y) from (#<alt (λ (x y) (- (* x x) (* y y)))> #<alt (λ (x y) (+ (* (+ x y) (- x y)) (* y (+ (- y) y))))>)
6.287 * * * * [regimes]: Trying to branch on (* x x) from (#<alt (λ (x y) (- (* x x) (* y y)))> #<alt (λ (x y) (+ (* (+ x y) (- x y)) (* y (+ (- y) y))))>)
6.326 * * * * [regimes]: Trying to branch on (- (* x x) (* y y)) from (#<alt (λ (x y) (- (* x x) (* y y)))> #<alt (λ (x y) (+ (* (+ x y) (- x y)) (* y (+ (- y) y))))>)
6.366 * * * * [regimes]: Trying to branch on y from (#<alt (λ (x y) (- (* x x) (* y y)))> #<alt (λ (x y) (+ (* (+ x y) (- x y)) (* y (+ (- y) y))))>)
6.406 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x y) (- (* x x) (* y y)))> #<alt (λ (x y) (+ (* (+ x y) (- x y)) (* y (+ (- y) y))))>)
6.437 * * * [regime]: Found split indices: #<option (#s(si 0 255))>
6.437 * [simplify]: Simplifying:
  (- (* x x) (* y y))
6.437 * * [simplify]: iteration 0: 5 enodes
6.438 * * [simplify]: iteration complete: 5 enodes
6.438 * * [simplify]: Extracting #0: cost 1 inf + 0
6.438 * * [simplify]: Extracting #1: cost 3 inf + 0
6.438 * * [simplify]: Extracting #2: cost 5 inf + 0
6.438 * * [simplify]: Extracting #3: cost 2 inf + 5
6.438 * * [simplify]: Extracting #4: cost 0 inf + 15
6.438 * [simplify]: Simplified to:
  (- (* x x) (* y y))
7.970 * [regime-testing]: Baseline error score: 0.00554973339452166
7.987 * [regime-testing]: Oracle error score: 0.0005000625078134767
8.012 * [regime-testing]: End program error score: 0.00554973339452166