1.375 * [progress]: [Phase 1 of 3] Setting up.
0.004 * * * [progress]: [1/2] Preparing points
0.121 * * * [progress]: [2/2] Setting up program.
0.124 * [progress]: [Phase 2 of 3] Improving.
0.125 * * * * [progress]: [ 1 / 1 ] simplifiying candidate #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
0.127 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
0.128 * * [simplify]: iteration 0: 6 enodes
0.133 * * [simplify]: iteration 1: 14 enodes
0.138 * * [simplify]: iteration 2: 34 enodes
0.144 * * [simplify]: iteration 3: 72 enodes
0.200 * * [simplify]: iteration 4: 233 enodes
0.317 * * [simplify]: iteration 5: 638 enodes
0.688 * * [simplify]: iteration 6: 1743 enodes
0.918 * * [simplify]: iteration 7: 2000 enodes
1.274 * * [simplify]: iteration complete: 2000 enodes
1.275 * * [simplify]: Extracting #0: cost 1 inf + 0
1.275 * * [simplify]: Extracting #1: cost 88 inf + 0
1.276 * * [simplify]: Extracting #2: cost 315 inf + 0
1.278 * * [simplify]: Extracting #3: cost 423 inf + 2194
1.287 * * [simplify]: Extracting #4: cost 236 inf + 18489
1.297 * * [simplify]: Extracting #5: cost 22 inf + 51292
1.320 * * [simplify]: Extracting #6: cost 0 inf + 56366
1.332 * [simplify]: Simplified to:
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
1.341 * * [progress]: iteration 1 / 4
1.341 * * * [progress]: picking best candidate
1.343 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
1.343 * * * [progress]: localizing error
1.358 * * * [progress]: generating rewritten candidates
1.359 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
1.387 * * * [progress]: generating series expansions
1.387 * * * * [progress]: [ 1 / 1 ] generating series at (2)
1.392 * [backup-simplify]: Simplify (- (pow x 4) (pow y 4)) into (- (pow x 4) (pow y 4))
1.392 * [approximate]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in (x y) around 0
1.393 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in y
1.393 * [taylor]: Taking taylor expansion of (pow x 4) in y
1.393 * [taylor]: Taking taylor expansion of x in y
1.393 * [backup-simplify]: Simplify x into x
1.393 * [taylor]: Taking taylor expansion of (pow y 4) in y
1.393 * [taylor]: Taking taylor expansion of y in y
1.393 * [backup-simplify]: Simplify 0 into 0
1.393 * [backup-simplify]: Simplify 1 into 1
1.393 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in x
1.393 * [taylor]: Taking taylor expansion of (pow x 4) in x
1.393 * [taylor]: Taking taylor expansion of x in x
1.393 * [backup-simplify]: Simplify 0 into 0
1.393 * [backup-simplify]: Simplify 1 into 1
1.393 * [taylor]: Taking taylor expansion of (pow y 4) in x
1.393 * [taylor]: Taking taylor expansion of y in x
1.393 * [backup-simplify]: Simplify y into y
1.393 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in x
1.393 * [taylor]: Taking taylor expansion of (pow x 4) in x
1.393 * [taylor]: Taking taylor expansion of x in x
1.393 * [backup-simplify]: Simplify 0 into 0
1.393 * [backup-simplify]: Simplify 1 into 1
1.393 * [taylor]: Taking taylor expansion of (pow y 4) in x
1.393 * [taylor]: Taking taylor expansion of y in x
1.393 * [backup-simplify]: Simplify y into y
1.394 * [backup-simplify]: Simplify (* y y) into (pow y 2)
1.394 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
1.394 * [backup-simplify]: Simplify (- (pow y 4)) into (- (pow y 4))
1.394 * [backup-simplify]: Simplify (+ 0 (- (pow y 4))) into (- (pow y 4))
1.394 * [taylor]: Taking taylor expansion of (- (pow y 4)) in y
1.394 * [taylor]: Taking taylor expansion of (pow y 4) in y
1.394 * [taylor]: Taking taylor expansion of y in y
1.394 * [backup-simplify]: Simplify 0 into 0
1.395 * [backup-simplify]: Simplify 1 into 1
1.395 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
1.395 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (* 0 (pow y 2))) into 0
1.395 * [backup-simplify]: Simplify (- 0) into 0
1.396 * [backup-simplify]: Simplify (+ 0 0) into 0
1.396 * [taylor]: Taking taylor expansion of 0 in y
1.396 * [backup-simplify]: Simplify 0 into 0
1.396 * [backup-simplify]: Simplify 0 into 0
1.396 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
1.397 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (* 0 (pow y 2)))) into 0
1.397 * [backup-simplify]: Simplify (- 0) into 0
1.397 * [backup-simplify]: Simplify (+ 0 0) into 0
1.397 * [taylor]: Taking taylor expansion of 0 in y
1.397 * [backup-simplify]: Simplify 0 into 0
1.397 * [backup-simplify]: Simplify 0 into 0
1.397 * [backup-simplify]: Simplify 0 into 0
1.398 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))) into 0
1.398 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (pow y 2))))) into 0
1.399 * [backup-simplify]: Simplify (- 0) into 0
1.399 * [backup-simplify]: Simplify (+ 0 0) into 0
1.399 * [taylor]: Taking taylor expansion of 0 in y
1.399 * [backup-simplify]: Simplify 0 into 0
1.399 * [backup-simplify]: Simplify 0 into 0
1.399 * [backup-simplify]: Simplify 0 into 0
1.399 * [backup-simplify]: Simplify 0 into 0
1.399 * [backup-simplify]: Simplify 0 into 0
1.399 * [backup-simplify]: Simplify (- (pow (/ 1 x) 4) (pow (/ 1 y) 4)) into (- (/ 1 (pow x 4)) (/ 1 (pow y 4)))
1.399 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in (x y) around 0
1.399 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in y
1.399 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
1.399 * [taylor]: Taking taylor expansion of (pow x 4) in y
1.399 * [taylor]: Taking taylor expansion of x in y
1.399 * [backup-simplify]: Simplify x into x
1.400 * [backup-simplify]: Simplify (* x x) into (pow x 2)
1.400 * [backup-simplify]: Simplify (* (pow x 2) (pow x 2)) into (pow x 4)
1.400 * [backup-simplify]: Simplify (/ 1 (pow x 4)) into (/ 1 (pow x 4))
1.400 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
1.400 * [taylor]: Taking taylor expansion of (pow y 4) in y
1.400 * [taylor]: Taking taylor expansion of y in y
1.400 * [backup-simplify]: Simplify 0 into 0
1.400 * [backup-simplify]: Simplify 1 into 1
1.400 * [backup-simplify]: Simplify (* 1 1) into 1
1.400 * [backup-simplify]: Simplify (* 1 1) into 1
1.401 * [backup-simplify]: Simplify (/ 1 1) into 1
1.401 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
1.401 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
1.401 * [taylor]: Taking taylor expansion of (pow x 4) in x
1.401 * [taylor]: Taking taylor expansion of x in x
1.401 * [backup-simplify]: Simplify 0 into 0
1.401 * [backup-simplify]: Simplify 1 into 1
1.401 * [backup-simplify]: Simplify (* 1 1) into 1
1.401 * [backup-simplify]: Simplify (* 1 1) into 1
1.401 * [backup-simplify]: Simplify (/ 1 1) into 1
1.401 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
1.401 * [taylor]: Taking taylor expansion of (pow y 4) in x
1.401 * [taylor]: Taking taylor expansion of y in x
1.401 * [backup-simplify]: Simplify y into y
1.402 * [backup-simplify]: Simplify (* y y) into (pow y 2)
1.402 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
1.402 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
1.402 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
1.402 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
1.402 * [taylor]: Taking taylor expansion of (pow x 4) in x
1.402 * [taylor]: Taking taylor expansion of x in x
1.402 * [backup-simplify]: Simplify 0 into 0
1.402 * [backup-simplify]: Simplify 1 into 1
1.402 * [backup-simplify]: Simplify (* 1 1) into 1
1.402 * [backup-simplify]: Simplify (* 1 1) into 1
1.402 * [backup-simplify]: Simplify (/ 1 1) into 1
1.402 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
1.402 * [taylor]: Taking taylor expansion of (pow y 4) in x
1.403 * [taylor]: Taking taylor expansion of y in x
1.403 * [backup-simplify]: Simplify y into y
1.403 * [backup-simplify]: Simplify (* y y) into (pow y 2)
1.403 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
1.403 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
1.403 * [backup-simplify]: Simplify (+ 1 0) into 1
1.403 * [taylor]: Taking taylor expansion of 1 in y
1.403 * [backup-simplify]: Simplify 1 into 1
1.404 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
1.405 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
1.406 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.406 * [backup-simplify]: Simplify (+ 0 0) into 0
1.406 * [taylor]: Taking taylor expansion of 0 in y
1.406 * [backup-simplify]: Simplify 0 into 0
1.407 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
1.408 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
1.409 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.409 * [backup-simplify]: Simplify (+ 0 0) into 0
1.409 * [taylor]: Taking taylor expansion of 0 in y
1.409 * [backup-simplify]: Simplify 0 into 0
1.410 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
1.411 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
1.412 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.413 * [backup-simplify]: Simplify (+ 0 0) into 0
1.413 * [taylor]: Taking taylor expansion of 0 in y
1.413 * [backup-simplify]: Simplify 0 into 0
1.414 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
1.415 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
1.416 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.417 * [backup-simplify]: Simplify (- (/ 1 (pow y 4))) into (- (/ 1 (pow y 4)))
1.417 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 4)))) into (- (/ 1 (pow y 4)))
1.417 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 4))) in y
1.417 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
1.417 * [taylor]: Taking taylor expansion of (pow y 4) in y
1.417 * [taylor]: Taking taylor expansion of y in y
1.417 * [backup-simplify]: Simplify 0 into 0
1.417 * [backup-simplify]: Simplify 1 into 1
1.417 * [backup-simplify]: Simplify (* 1 1) into 1
1.418 * [backup-simplify]: Simplify (* 1 1) into 1
1.418 * [backup-simplify]: Simplify (/ 1 1) into 1
1.418 * [backup-simplify]: Simplify (- 1) into -1
1.419 * [backup-simplify]: Simplify -1 into -1
1.419 * [backup-simplify]: Simplify 1 into 1
1.421 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
1.422 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
1.423 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.424 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
1.424 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (* 0 (pow y 2))) into 0
1.424 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))))) into 0
1.424 * [backup-simplify]: Simplify (- 0) into 0
1.425 * [backup-simplify]: Simplify (+ 0 0) into 0
1.425 * [taylor]: Taking taylor expansion of 0 in y
1.425 * [backup-simplify]: Simplify 0 into 0
1.425 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
1.426 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
1.427 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.427 * [backup-simplify]: Simplify (- 0) into 0
1.427 * [backup-simplify]: Simplify 0 into 0
1.427 * [backup-simplify]: Simplify 0 into 0
1.427 * [backup-simplify]: Simplify 0 into 0
1.429 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
1.430 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
1.431 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.432 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
1.433 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (* 0 (pow y 2)))) into 0
1.433 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))) (* 0 (/ 0 (pow y 4))))) into 0
1.433 * [backup-simplify]: Simplify (- 0) into 0
1.434 * [backup-simplify]: Simplify (+ 0 0) into 0
1.434 * [taylor]: Taking taylor expansion of 0 in y
1.434 * [backup-simplify]: Simplify 0 into 0
1.435 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
1.436 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
1.436 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.437 * [backup-simplify]: Simplify (- 0) into 0
1.437 * [backup-simplify]: Simplify 0 into 0
1.437 * [backup-simplify]: Simplify 0 into 0
1.437 * [backup-simplify]: Simplify 0 into 0
1.438 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 x))) 4)) (* -1 (pow (* (/ 1 (/ 1 y)) 1) 4))) into (- (pow x 4) (pow y 4))
1.438 * [backup-simplify]: Simplify (- (pow (/ 1 (- x)) 4) (pow (/ 1 (- y)) 4)) into (- (/ 1 (pow x 4)) (/ 1 (pow y 4)))
1.438 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in (x y) around 0
1.438 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in y
1.438 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
1.438 * [taylor]: Taking taylor expansion of (pow x 4) in y
1.438 * [taylor]: Taking taylor expansion of x in y
1.438 * [backup-simplify]: Simplify x into x
1.438 * [backup-simplify]: Simplify (* x x) into (pow x 2)
1.438 * [backup-simplify]: Simplify (* (pow x 2) (pow x 2)) into (pow x 4)
1.438 * [backup-simplify]: Simplify (/ 1 (pow x 4)) into (/ 1 (pow x 4))
1.438 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
1.438 * [taylor]: Taking taylor expansion of (pow y 4) in y
1.438 * [taylor]: Taking taylor expansion of y in y
1.439 * [backup-simplify]: Simplify 0 into 0
1.439 * [backup-simplify]: Simplify 1 into 1
1.439 * [backup-simplify]: Simplify (* 1 1) into 1
1.439 * [backup-simplify]: Simplify (* 1 1) into 1
1.440 * [backup-simplify]: Simplify (/ 1 1) into 1
1.440 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
1.440 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
1.440 * [taylor]: Taking taylor expansion of (pow x 4) in x
1.440 * [taylor]: Taking taylor expansion of x in x
1.440 * [backup-simplify]: Simplify 0 into 0
1.440 * [backup-simplify]: Simplify 1 into 1
1.440 * [backup-simplify]: Simplify (* 1 1) into 1
1.441 * [backup-simplify]: Simplify (* 1 1) into 1
1.441 * [backup-simplify]: Simplify (/ 1 1) into 1
1.441 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
1.441 * [taylor]: Taking taylor expansion of (pow y 4) in x
1.441 * [taylor]: Taking taylor expansion of y in x
1.441 * [backup-simplify]: Simplify y into y
1.441 * [backup-simplify]: Simplify (* y y) into (pow y 2)
1.441 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
1.441 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
1.441 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
1.441 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
1.441 * [taylor]: Taking taylor expansion of (pow x 4) in x
1.442 * [taylor]: Taking taylor expansion of x in x
1.442 * [backup-simplify]: Simplify 0 into 0
1.442 * [backup-simplify]: Simplify 1 into 1
1.442 * [backup-simplify]: Simplify (* 1 1) into 1
1.442 * [backup-simplify]: Simplify (* 1 1) into 1
1.443 * [backup-simplify]: Simplify (/ 1 1) into 1
1.443 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
1.443 * [taylor]: Taking taylor expansion of (pow y 4) in x
1.443 * [taylor]: Taking taylor expansion of y in x
1.443 * [backup-simplify]: Simplify y into y
1.443 * [backup-simplify]: Simplify (* y y) into (pow y 2)
1.443 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
1.443 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
1.444 * [backup-simplify]: Simplify (+ 1 0) into 1
1.444 * [taylor]: Taking taylor expansion of 1 in y
1.444 * [backup-simplify]: Simplify 1 into 1
1.444 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
1.445 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
1.446 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.446 * [backup-simplify]: Simplify (+ 0 0) into 0
1.446 * [taylor]: Taking taylor expansion of 0 in y
1.446 * [backup-simplify]: Simplify 0 into 0
1.447 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
1.448 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
1.449 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.449 * [backup-simplify]: Simplify (+ 0 0) into 0
1.449 * [taylor]: Taking taylor expansion of 0 in y
1.450 * [backup-simplify]: Simplify 0 into 0
1.451 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
1.452 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
1.453 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.453 * [backup-simplify]: Simplify (+ 0 0) into 0
1.453 * [taylor]: Taking taylor expansion of 0 in y
1.453 * [backup-simplify]: Simplify 0 into 0
1.455 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
1.456 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
1.457 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.457 * [backup-simplify]: Simplify (- (/ 1 (pow y 4))) into (- (/ 1 (pow y 4)))
1.457 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 4)))) into (- (/ 1 (pow y 4)))
1.457 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 4))) in y
1.457 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
1.457 * [taylor]: Taking taylor expansion of (pow y 4) in y
1.457 * [taylor]: Taking taylor expansion of y in y
1.457 * [backup-simplify]: Simplify 0 into 0
1.457 * [backup-simplify]: Simplify 1 into 1
1.458 * [backup-simplify]: Simplify (* 1 1) into 1
1.458 * [backup-simplify]: Simplify (* 1 1) into 1
1.459 * [backup-simplify]: Simplify (/ 1 1) into 1
1.459 * [backup-simplify]: Simplify (- 1) into -1
1.459 * [backup-simplify]: Simplify -1 into -1
1.459 * [backup-simplify]: Simplify 1 into 1
1.461 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
1.462 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
1.463 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.463 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
1.463 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (* 0 (pow y 2))) into 0
1.463 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))))) into 0
1.464 * [backup-simplify]: Simplify (- 0) into 0
1.464 * [backup-simplify]: Simplify (+ 0 0) into 0
1.464 * [taylor]: Taking taylor expansion of 0 in y
1.464 * [backup-simplify]: Simplify 0 into 0
1.465 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
1.466 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
1.466 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
1.467 * [backup-simplify]: Simplify (- 0) into 0
1.467 * [backup-simplify]: Simplify 0 into 0
1.467 * [backup-simplify]: Simplify 0 into 0
1.467 * [backup-simplify]: Simplify 0 into 0
1.469 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
1.471 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
1.472 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.472 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
1.473 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (* 0 (pow y 2)))) into 0
1.473 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))) (* 0 (/ 0 (pow y 4))))) into 0
1.473 * [backup-simplify]: Simplify (- 0) into 0
1.474 * [backup-simplify]: Simplify (+ 0 0) into 0
1.474 * [taylor]: Taking taylor expansion of 0 in y
1.474 * [backup-simplify]: Simplify 0 into 0
1.475 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
1.476 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
1.477 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
1.477 * [backup-simplify]: Simplify (- 0) into 0
1.477 * [backup-simplify]: Simplify 0 into 0
1.477 * [backup-simplify]: Simplify 0 into 0
1.477 * [backup-simplify]: Simplify 0 into 0
1.478 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 (- x)))) 4)) (* -1 (pow (* (/ 1 (/ 1 (- y))) 1) 4))) into (- (pow x 4) (pow y 4))
1.478 * * * [progress]: simplifying candidates
1.478 * * * * [progress]: [ 1 / 27 ] simplifiying candidate #<alt (λ (x y) (log (/ (exp (pow x 4)) (exp (pow y 4)))))>
1.478 * * * * [progress]: [ 2 / 27 ] simplifiying candidate #<alt (λ (x y) (pow (- (pow x 4) (pow y 4)) 1))>
1.478 * * * * [progress]: [ 3 / 27 ] simplifiying candidate #<alt (λ (x y) (exp (log (- (pow x 4) (pow y 4)))))>
1.478 * * * * [progress]: [ 4 / 27 ] simplifiying candidate #<alt (λ (x y) (log (exp (- (pow x 4) (pow y 4)))))>
1.478 * * * * [progress]: [ 5 / 27 ] simplifiying candidate #<alt (λ (x y) (* (* (cbrt (- (pow x 4) (pow y 4))) (cbrt (- (pow x 4) (pow y 4)))) (cbrt (- (pow x 4) (pow y 4)))))>
1.478 * * * * [progress]: [ 6 / 27 ] simplifiying candidate #<alt (λ (x y) (cbrt (* (* (- (pow x 4) (pow y 4)) (- (pow x 4) (pow y 4))) (- (pow x 4) (pow y 4)))))>
1.478 * * * * [progress]: [ 7 / 27 ] simplifiying candidate #<alt (λ (x y) (* (sqrt (- (pow x 4) (pow y 4))) (sqrt (- (pow x 4) (pow y 4)))))>
1.478 * * * * [progress]: [ 8 / 27 ] simplifiying candidate #<alt (λ (x y) (/ (- (pow (pow x 4) 3) (pow (pow y 4) 3)) (+ (* (pow x 4) (pow x 4)) (+ (* (pow y 4) (pow y 4)) (* (pow x 4) (pow y 4))))))>
1.478 * * * * [progress]: [ 9 / 27 ] simplifiying candidate #<alt (λ (x y) (+ (pow x 4) (- (pow y 4))))>
1.479 * * * * [progress]: [ 10 / 27 ] simplifiying candidate #<alt (λ (x y) (* 1 (- (pow x 4) (pow y 4))))>
1.479 * * * * [progress]: [ 11 / 27 ] simplifiying candidate #<alt (λ (x y) (/ (- (* (pow x 4) (pow x 4)) (* (pow y 4) (pow y 4))) (+ (pow x 4) (pow y 4))))>
1.479 * * * * [progress]: [ 12 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (pow (sqrt x) 4) (pow (sqrt y) 4)) (- (pow (sqrt x) 4) (pow (sqrt y) 4))))>
1.479 * * * * [progress]: [ 13 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (pow (sqrt x) 4) (sqrt (pow y 4))) (- (pow (sqrt x) 4) (sqrt (pow y 4)))))>
1.479 * * * * [progress]: [ 14 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (pow (sqrt x) 4) (pow y (/ 4 2))) (- (pow (sqrt x) 4) (pow y (/ 4 2)))))>
1.479 * * * * [progress]: [ 15 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (sqrt (pow x 4)) (pow (sqrt y) 4)) (- (sqrt (pow x 4)) (pow (sqrt y) 4))))>
1.479 * * * * [progress]: [ 16 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (sqrt (pow x 4)) (sqrt (pow y 4))) (- (sqrt (pow x 4)) (sqrt (pow y 4)))))>
1.479 * * * * [progress]: [ 17 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (sqrt (pow x 4)) (pow y (/ 4 2))) (- (sqrt (pow x 4)) (pow y (/ 4 2)))))>
1.479 * * * * [progress]: [ 18 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (pow x (/ 4 2)) (pow (sqrt y) 4)) (- (pow x (/ 4 2)) (pow (sqrt y) 4))))>
1.479 * * * * [progress]: [ 19 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (pow x (/ 4 2)) (sqrt (pow y 4))) (- (pow x (/ 4 2)) (sqrt (pow y 4)))))>
1.479 * * * * [progress]: [ 20 / 27 ] simplifiying candidate #<alt (λ (x y) (* (+ (pow x (/ 4 2)) (pow y (/ 4 2))) (- (pow x (/ 4 2)) (pow y (/ 4 2)))))>
1.479 * * * * [progress]: [ 21 / 27 ] simplifiying candidate #<alt (λ (x y) (* (pow 1 4) (- (pow x 4) (pow y 4))))>
1.479 * * * * [progress]: [ 22 / 27 ] simplifiying candidate #<alt (λ (x y) (* 1 (- (pow x 4) (pow y 4))))>
1.479 * * * * [progress]: [ 23 / 27 ] simplifiying candidate #<alt (λ (x y) (+ (pow x 4) (- (pow y 4))))>
1.479 * * * * [progress]: [ 24 / 27 ] simplifiying candidate #<alt (λ (x y) (posit16->real (real->posit16 (- (pow x 4) (pow y 4)))))>
1.479 * * * * [progress]: [ 25 / 27 ] simplifiying candidate #<alt (λ (x y) 0)>
1.479 * * * * [progress]: [ 26 / 27 ] simplifiying candidate #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
1.480 * * * * [progress]: [ 27 / 27 ] simplifiying candidate #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
1.481 * [simplify]: Simplifying:
  (/ (exp (pow x 4)) (exp (pow y 4)))
  (log (- (pow x 4) (pow y 4)))
  (exp (- (pow x 4) (pow y 4)))
  (* (cbrt (- (pow x 4) (pow y 4))) (cbrt (- (pow x 4) (pow y 4))))
  (cbrt (- (pow x 4) (pow y 4)))
  (* (* (- (pow x 4) (pow y 4)) (- (pow x 4) (pow y 4))) (- (pow x 4) (pow y 4)))
  (sqrt (- (pow x 4) (pow y 4)))
  (sqrt (- (pow x 4) (pow y 4)))
  (- (pow (pow x 4) 3) (pow (pow y 4) 3))
  (+ (* (pow x 4) (pow x 4)) (+ (* (pow y 4) (pow y 4)) (* (pow x 4) (pow y 4))))
  (- (pow y 4))
  (- (* (pow x 4) (pow x 4)) (* (pow y 4) (pow y 4)))
  (+ (pow x 4) (pow y 4))
  (+ (pow (sqrt x) 4) (pow (sqrt y) 4))
  (- (pow (sqrt x) 4) (pow (sqrt y) 4))
  (+ (pow (sqrt x) 4) (sqrt (pow y 4)))
  (- (pow (sqrt x) 4) (sqrt (pow y 4)))
  (+ (pow (sqrt x) 4) (pow y (/ 4 2)))
  (- (pow (sqrt x) 4) (pow y (/ 4 2)))
  (+ (sqrt (pow x 4)) (pow (sqrt y) 4))
  (- (sqrt (pow x 4)) (pow (sqrt y) 4))
  (+ (sqrt (pow x 4)) (sqrt (pow y 4)))
  (- (sqrt (pow x 4)) (sqrt (pow y 4)))
  (+ (sqrt (pow x 4)) (pow y (/ 4 2)))
  (- (sqrt (pow x 4)) (pow y (/ 4 2)))
  (+ (pow x (/ 4 2)) (pow (sqrt y) 4))
  (- (pow x (/ 4 2)) (pow (sqrt y) 4))
  (+ (pow x (/ 4 2)) (sqrt (pow y 4)))
  (- (pow x (/ 4 2)) (sqrt (pow y 4)))
  (+ (pow x (/ 4 2)) (pow y (/ 4 2)))
  (- (pow x (/ 4 2)) (pow y (/ 4 2)))
  (- (pow x 4) (pow y 4))
  (- (pow x 4) (pow y 4))
  (- (pow y 4))
  (real->posit16 (- (pow x 4) (pow y 4)))
  0
  (- (pow x 4) (pow y 4))
  (- (pow x 4) (pow y 4))
1.482 * * [simplify]: iteration 0: 58 enodes
1.497 * * [simplify]: iteration 1: 118 enodes
1.534 * * [simplify]: iteration 2: 283 enodes
1.655 * * [simplify]: iteration 3: 818 enodes
1.864 * * [simplify]: iteration 4: 2001 enodes
2.365 * * [simplify]: iteration complete: 2001 enodes
2.365 * * [simplify]: Extracting #0: cost 22 inf + 0
2.365 * * [simplify]: Extracting #1: cost 131 inf + 1
2.372 * * [simplify]: Extracting #2: cost 475 inf + 287
2.377 * * [simplify]: Extracting #3: cost 594 inf + 33798
2.396 * * [simplify]: Extracting #4: cost 313 inf + 98006
2.418 * * [simplify]: Extracting #5: cost 147 inf + 124397
2.455 * * [simplify]: Extracting #6: cost 18 inf + 153455
2.489 * * [simplify]: Extracting #7: cost 0 inf + 159283
2.518 * [simplify]: Simplified to:
  (exp (- (* (* x x) (* x x)) (* (* y y) (* y y))))
  (log (- (* (* x x) (* x x)) (* (* y y) (* y y))))
  (exp (- (* (* x x) (* x x)) (* (* y y) (* y y))))
  (* (cbrt (- (* (* x x) (* x x)) (* (* y y) (* y y)))) (cbrt (- (* (* x x) (* x x)) (* (* y y) (* y y)))))
  (cbrt (- (* (* x x) (* x x)) (* (* y y) (* y y))))
  (* (* (- (* (* x x) (* x x)) (* (* y y) (* y y))) (- (* (* x x) (* x x)) (* (* y y) (* y y)))) (- (* (* x x) (* x x)) (* (* y y) (* y y))))
  (sqrt (- (* (* x x) (* x x)) (* (* y y) (* y y))))
  (sqrt (- (* (* x x) (* x x)) (* (* y y) (* y y))))
  (- (* (* (* x x) (* x x)) (* (* (* x x) (* x x)) (* (* x x) (* x x)))) (* (* (* y y) (* y y)) (* (* (* y y) (* y y)) (* (* y y) (* y y)))))
  (+ (* (* (* x x) (* x x)) (* (* x x) (* x x))) (* (+ (* (* y y) (* y y)) (* (* x x) (* x x))) (* (* y y) (* y y))))
  (* (- (* y y)) (* y y))
  (- (* (* (* x x) (* x x)) (* (* x x) (* x x))) (* (* (* y y) (* y y)) (* (* y y) (* y y))))
  (+ (* (* y y) (* y y)) (* (* x x) (* x x)))
  (+ (* x x) (* y y))
  (* (+ x y) (- x y))
  (+ (* x x) (fabs (* y y)))
  (- (* x x) (fabs (* y y)))
  (+ (* x x) (* y y))
  (* (+ x y) (- x y))
  (+ (* y y) (fabs (* x x)))
  (- (fabs (* x x)) (* y y))
  (+ (fabs (* x x)) (fabs (* y y)))
  (- (fabs (* x x)) (fabs (* y y)))
  (+ (* y y) (fabs (* x x)))
  (- (fabs (* x x)) (* y y))
  (+ (* x x) (* y y))
  (* (+ x y) (- x y))
  (+ (* x x) (fabs (* y y)))
  (- (* x x) (fabs (* y y)))
  (+ (* x x) (* y y))
  (* (+ x y) (- x y))
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
  (* (- (* y y)) (* y y))
  (real->posit16 (- (* (* x x) (* x x)) (* (* y y) (* y y))))
  0
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
2.519 * * * [progress]: adding candidates to table
2.766 * [progress]: [Phase 3 of 3] Extracting.
2.768 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
2.769 * * [simplify]: iteration 0: 6 enodes
2.769 * * [simplify]: iteration complete: 6 enodes
2.769 * * [simplify]: Extracting #0: cost 1 inf + 0
2.769 * * [simplify]: Extracting #1: cost 3 inf + 0
2.769 * * [simplify]: Extracting #2: cost 6 inf + 0
2.769 * * [simplify]: Extracting #3: cost 2 inf + 215
2.769 * * [simplify]: Extracting #4: cost 0 inf + 890
2.769 * [simplify]: Simplified to:
  (- (pow x 4) (pow y 4))
5.176 * [regime-testing]: Baseline error score: 0.002875359419927491
5.180 * [regime-testing]: Oracle error score: 0.002875359419927491
5.180 * [regime-testing]: End program error score: 0.002875359419927491