4.650 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.027 * * * [progress]: [2/2] Setting up program.
0.030 * [progress]: [Phase 2 of 3] Improving.
0.030 * [simplify]: Simplifying:
  (- (* x x) (* y y))
0.030 * * [simplify]: iteration 0: 5 enodes
0.031 * * [simplify]: iteration 1: 10 enodes
0.033 * * [simplify]: iteration 2: 17 enodes
0.035 * * [simplify]: iteration 3: 32 enodes
0.047 * * [simplify]: iteration 4: 58 enodes
0.061 * * [simplify]: iteration 5: 129 enodes
0.110 * * [simplify]: iteration 6: 281 enodes
0.230 * * [simplify]: iteration 7: 703 enodes
1.372 * * [simplify]: iteration 8: 3184 enodes
3.199 * * [simplify]: iteration complete: 5000 enodes
3.199 * * [simplify]: Extracting #0: cost 1 inf + 0
3.199 * * [simplify]: Extracting #1: cost 139 inf + 0
3.209 * * [simplify]: Extracting #2: cost 1135 inf + 42
3.219 * * [simplify]: Extracting #3: cost 1018 inf + 18699
3.255 * * [simplify]: Extracting #4: cost 149 inf + 129695
3.305 * * [simplify]: Extracting #5: cost 1 inf + 155685
3.356 * * [simplify]: Extracting #6: cost 0 inf + 155807
3.405 * [simplify]: Simplified to:
  (- (* x x) (* y y))
3.406 * * [progress]: iteration 1 / 4
3.406 * * * [progress]: picking best candidate
3.411 * * * * [pick]: Picked  #<alt (λ (x y) (- (* x x) (* y y)))>
3.411 * * * [progress]: localizing error
3.425 * * * [progress]: generating rewritten candidates
3.425 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
3.435 * * * [progress]: generating series expansions
3.435 * * * * [progress]: [ 1 / 1 ] generating series at (2)
3.436 * [backup-simplify]: Simplify (- (* x x) (* y y)) into (- (pow x 2) (pow y 2))
3.436 * [approximate]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in (x y) around 0
3.436 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in y
3.436 * [taylor]: Taking taylor expansion of (pow x 2) in y
3.436 * [taylor]: Taking taylor expansion of x in y
3.436 * [backup-simplify]: Simplify x into x
3.436 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.436 * [taylor]: Taking taylor expansion of y in y
3.436 * [backup-simplify]: Simplify 0 into 0
3.436 * [backup-simplify]: Simplify 1 into 1
3.436 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
3.436 * [taylor]: Taking taylor expansion of (pow x 2) in x
3.436 * [taylor]: Taking taylor expansion of x in x
3.436 * [backup-simplify]: Simplify 0 into 0
3.436 * [backup-simplify]: Simplify 1 into 1
3.436 * [taylor]: Taking taylor expansion of (pow y 2) in x
3.436 * [taylor]: Taking taylor expansion of y in x
3.436 * [backup-simplify]: Simplify y into y
3.436 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
3.436 * [taylor]: Taking taylor expansion of (pow x 2) in x
3.436 * [taylor]: Taking taylor expansion of x in x
3.436 * [backup-simplify]: Simplify 0 into 0
3.436 * [backup-simplify]: Simplify 1 into 1
3.436 * [taylor]: Taking taylor expansion of (pow y 2) in x
3.436 * [taylor]: Taking taylor expansion of y in x
3.436 * [backup-simplify]: Simplify y into y
3.437 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.437 * [backup-simplify]: Simplify (- (pow y 2)) into (- (pow y 2))
3.437 * [backup-simplify]: Simplify (+ 0 (- (pow y 2))) into (- (pow y 2))
3.437 * [taylor]: Taking taylor expansion of (- (pow y 2)) in y
3.437 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.437 * [taylor]: Taking taylor expansion of y in y
3.437 * [backup-simplify]: Simplify 0 into 0
3.437 * [backup-simplify]: Simplify 1 into 1
3.437 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
3.438 * [backup-simplify]: Simplify (- 0) into 0
3.438 * [backup-simplify]: Simplify (+ 0 0) into 0
3.438 * [taylor]: Taking taylor expansion of 0 in y
3.438 * [backup-simplify]: Simplify 0 into 0
3.439 * [backup-simplify]: Simplify 0 into 0
3.439 * [backup-simplify]: Simplify (* 1 1) into 1
3.440 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
3.440 * [backup-simplify]: Simplify (- 0) into 0
3.440 * [backup-simplify]: Simplify (+ 1 0) into 1
3.440 * [taylor]: Taking taylor expansion of 1 in y
3.440 * [backup-simplify]: Simplify 1 into 1
3.440 * [backup-simplify]: Simplify 1 into 1
3.440 * [backup-simplify]: Simplify 0 into 0
3.441 * [backup-simplify]: Simplify (* 1 1) into 1
3.441 * [backup-simplify]: Simplify (- 1) into -1
3.441 * [backup-simplify]: Simplify -1 into -1
3.441 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.442 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))) into 0
3.442 * [backup-simplify]: Simplify (- 0) into 0
3.443 * [backup-simplify]: Simplify (+ 0 0) into 0
3.443 * [taylor]: Taking taylor expansion of 0 in y
3.443 * [backup-simplify]: Simplify 0 into 0
3.443 * [backup-simplify]: Simplify 0 into 0
3.443 * [backup-simplify]: Simplify 0 into 0
3.443 * [backup-simplify]: Simplify 0 into 0
3.443 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.443 * [backup-simplify]: Simplify (- 0) into 0
3.444 * [backup-simplify]: Simplify 0 into 0
3.444 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.445 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 y))))) into 0
3.445 * [backup-simplify]: Simplify (- 0) into 0
3.446 * [backup-simplify]: Simplify (+ 0 0) into 0
3.446 * [taylor]: Taking taylor expansion of 0 in y
3.446 * [backup-simplify]: Simplify 0 into 0
3.446 * [backup-simplify]: Simplify 0 into 0
3.446 * [backup-simplify]: Simplify 0 into 0
3.446 * [backup-simplify]: Simplify (+ (* -1 (pow (* y 1) 2)) (* 1 (pow (* 1 x) 2))) into (- (pow x 2) (pow y 2))
3.446 * [backup-simplify]: Simplify (- (* (/ 1 x) (/ 1 x)) (* (/ 1 y) (/ 1 y))) into (- (/ 1 (pow x 2)) (/ 1 (pow y 2)))
3.446 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
3.446 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
3.446 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
3.446 * [taylor]: Taking taylor expansion of (pow x 2) in y
3.446 * [taylor]: Taking taylor expansion of x in y
3.446 * [backup-simplify]: Simplify x into x
3.446 * [backup-simplify]: Simplify (* x x) into (pow x 2)
3.446 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
3.446 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
3.446 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.446 * [taylor]: Taking taylor expansion of y in y
3.446 * [backup-simplify]: Simplify 0 into 0
3.446 * [backup-simplify]: Simplify 1 into 1
3.447 * [backup-simplify]: Simplify (* 1 1) into 1
3.447 * [backup-simplify]: Simplify (/ 1 1) into 1
3.447 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
3.447 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
3.447 * [taylor]: Taking taylor expansion of (pow x 2) in x
3.447 * [taylor]: Taking taylor expansion of x in x
3.447 * [backup-simplify]: Simplify 0 into 0
3.447 * [backup-simplify]: Simplify 1 into 1
3.447 * [backup-simplify]: Simplify (* 1 1) into 1
3.448 * [backup-simplify]: Simplify (/ 1 1) into 1
3.448 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
3.448 * [taylor]: Taking taylor expansion of (pow y 2) in x
3.448 * [taylor]: Taking taylor expansion of y in x
3.448 * [backup-simplify]: Simplify y into y
3.448 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.448 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
3.448 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
3.448 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
3.448 * [taylor]: Taking taylor expansion of (pow x 2) in x
3.448 * [taylor]: Taking taylor expansion of x in x
3.448 * [backup-simplify]: Simplify 0 into 0
3.448 * [backup-simplify]: Simplify 1 into 1
3.448 * [backup-simplify]: Simplify (* 1 1) into 1
3.449 * [backup-simplify]: Simplify (/ 1 1) into 1
3.449 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
3.449 * [taylor]: Taking taylor expansion of (pow y 2) in x
3.449 * [taylor]: Taking taylor expansion of y in x
3.449 * [backup-simplify]: Simplify y into y
3.449 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.449 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
3.450 * [backup-simplify]: Simplify (+ 1 0) into 1
3.450 * [taylor]: Taking taylor expansion of 1 in y
3.450 * [backup-simplify]: Simplify 1 into 1
3.450 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.451 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.451 * [backup-simplify]: Simplify (+ 0 0) into 0
3.451 * [taylor]: Taking taylor expansion of 0 in y
3.451 * [backup-simplify]: Simplify 0 into 0
3.452 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.452 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.452 * [backup-simplify]: Simplify (- (/ 1 (pow y 2))) into (- (/ 1 (pow y 2)))
3.453 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 2)))) into (- (/ 1 (pow y 2)))
3.453 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
3.453 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
3.453 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.453 * [taylor]: Taking taylor expansion of y in y
3.453 * [backup-simplify]: Simplify 0 into 0
3.453 * [backup-simplify]: Simplify 1 into 1
3.453 * [backup-simplify]: Simplify (* 1 1) into 1
3.453 * [backup-simplify]: Simplify (/ 1 1) into 1
3.454 * [backup-simplify]: Simplify (- 1) into -1
3.454 * [backup-simplify]: Simplify -1 into -1
3.454 * [backup-simplify]: Simplify 1 into 1
3.454 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.455 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.455 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
3.455 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))))) into 0
3.456 * [backup-simplify]: Simplify (- 0) into 0
3.456 * [backup-simplify]: Simplify (+ 0 0) into 0
3.456 * [taylor]: Taking taylor expansion of 0 in y
3.456 * [backup-simplify]: Simplify 0 into 0
3.457 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.457 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.457 * [backup-simplify]: Simplify (- 0) into 0
3.457 * [backup-simplify]: Simplify 0 into 0
3.457 * [backup-simplify]: Simplify 0 into 0
3.457 * [backup-simplify]: Simplify 0 into 0
3.458 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.459 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.459 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
3.459 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))) (* 0 (/ 0 (pow y 2))))) into 0
3.460 * [backup-simplify]: Simplify (- 0) into 0
3.460 * [backup-simplify]: Simplify (+ 0 0) into 0
3.460 * [taylor]: Taking taylor expansion of 0 in y
3.460 * [backup-simplify]: Simplify 0 into 0
3.461 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.461 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.462 * [backup-simplify]: Simplify (- 0) into 0
3.462 * [backup-simplify]: Simplify 0 into 0
3.462 * [backup-simplify]: Simplify 0 into 0
3.462 * [backup-simplify]: Simplify 0 into 0
3.463 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 x))) 2)) (* -1 (pow (* (/ 1 (/ 1 y)) 1) 2))) into (- (pow x 2) (pow y 2))
3.463 * [backup-simplify]: Simplify (- (* (/ 1 (- x)) (/ 1 (- x))) (* (/ 1 (- y)) (/ 1 (- y)))) into (- (/ 1 (pow x 2)) (/ 1 (pow y 2)))
3.463 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
3.463 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
3.463 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
3.463 * [taylor]: Taking taylor expansion of (pow x 2) in y
3.463 * [taylor]: Taking taylor expansion of x in y
3.463 * [backup-simplify]: Simplify x into x
3.463 * [backup-simplify]: Simplify (* x x) into (pow x 2)
3.463 * [backup-simplify]: Simplify (/ 1 (pow x 2)) into (/ 1 (pow x 2))
3.463 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
3.463 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.463 * [taylor]: Taking taylor expansion of y in y
3.463 * [backup-simplify]: Simplify 0 into 0
3.463 * [backup-simplify]: Simplify 1 into 1
3.464 * [backup-simplify]: Simplify (* 1 1) into 1
3.464 * [backup-simplify]: Simplify (/ 1 1) into 1
3.464 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
3.465 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
3.465 * [taylor]: Taking taylor expansion of (pow x 2) in x
3.465 * [taylor]: Taking taylor expansion of x in x
3.465 * [backup-simplify]: Simplify 0 into 0
3.465 * [backup-simplify]: Simplify 1 into 1
3.465 * [backup-simplify]: Simplify (* 1 1) into 1
3.466 * [backup-simplify]: Simplify (/ 1 1) into 1
3.466 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
3.466 * [taylor]: Taking taylor expansion of (pow y 2) in x
3.466 * [taylor]: Taking taylor expansion of y in x
3.466 * [backup-simplify]: Simplify y into y
3.466 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.466 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
3.466 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
3.466 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
3.466 * [taylor]: Taking taylor expansion of (pow x 2) in x
3.466 * [taylor]: Taking taylor expansion of x in x
3.466 * [backup-simplify]: Simplify 0 into 0
3.466 * [backup-simplify]: Simplify 1 into 1
3.467 * [backup-simplify]: Simplify (* 1 1) into 1
3.467 * [backup-simplify]: Simplify (/ 1 1) into 1
3.467 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
3.467 * [taylor]: Taking taylor expansion of (pow y 2) in x
3.467 * [taylor]: Taking taylor expansion of y in x
3.467 * [backup-simplify]: Simplify y into y
3.467 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.467 * [backup-simplify]: Simplify (/ 1 (pow y 2)) into (/ 1 (pow y 2))
3.468 * [backup-simplify]: Simplify (+ 1 0) into 1
3.468 * [taylor]: Taking taylor expansion of 1 in y
3.468 * [backup-simplify]: Simplify 1 into 1
3.469 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.469 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.470 * [backup-simplify]: Simplify (+ 0 0) into 0
3.470 * [taylor]: Taking taylor expansion of 0 in y
3.470 * [backup-simplify]: Simplify 0 into 0
3.471 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.472 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.472 * [backup-simplify]: Simplify (- (/ 1 (pow y 2))) into (- (/ 1 (pow y 2)))
3.472 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 2)))) into (- (/ 1 (pow y 2)))
3.472 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2))) in y
3.472 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
3.472 * [taylor]: Taking taylor expansion of (pow y 2) in y
3.472 * [taylor]: Taking taylor expansion of y in y
3.472 * [backup-simplify]: Simplify 0 into 0
3.472 * [backup-simplify]: Simplify 1 into 1
3.473 * [backup-simplify]: Simplify (* 1 1) into 1
3.473 * [backup-simplify]: Simplify (/ 1 1) into 1
3.474 * [backup-simplify]: Simplify (- 1) into -1
3.474 * [backup-simplify]: Simplify -1 into -1
3.474 * [backup-simplify]: Simplify 1 into 1
3.475 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.476 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.476 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
3.476 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))))) into 0
3.477 * [backup-simplify]: Simplify (- 0) into 0
3.477 * [backup-simplify]: Simplify (+ 0 0) into 0
3.477 * [taylor]: Taking taylor expansion of 0 in y
3.477 * [backup-simplify]: Simplify 0 into 0
3.478 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.479 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.479 * [backup-simplify]: Simplify (- 0) into 0
3.479 * [backup-simplify]: Simplify 0 into 0
3.480 * [backup-simplify]: Simplify 0 into 0
3.480 * [backup-simplify]: Simplify 0 into 0
3.481 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.482 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.482 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
3.483 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 2)) (/ 0 (pow y 2))) (* 0 (/ 0 (pow y 2))))) into 0
3.483 * [backup-simplify]: Simplify (- 0) into 0
3.484 * [backup-simplify]: Simplify (+ 0 0) into 0
3.484 * [taylor]: Taking taylor expansion of 0 in y
3.484 * [backup-simplify]: Simplify 0 into 0
3.485 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.485 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.486 * [backup-simplify]: Simplify (- 0) into 0
3.486 * [backup-simplify]: Simplify 0 into 0
3.486 * [backup-simplify]: Simplify 0 into 0
3.486 * [backup-simplify]: Simplify 0 into 0
3.486 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 (- x)))) 2)) (* -1 (pow (* (/ 1 (/ 1 (- y))) 1) 2))) into (- (pow x 2) (pow y 2))
3.486 * * * [progress]: simplifying candidates
3.487 * [simplify]: Simplifying:
  (/ (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))
3.487 * * [simplify]: iteration 0: 33 enodes
3.494 * * [simplify]: iteration 1: 111 enodes
3.562 * * [simplify]: iteration 2: 589 enodes
3.843 * * [simplify]: iteration complete: 5000 enodes
3.843 * * [simplify]: Extracting #0: cost 14 inf + 0
3.844 * * [simplify]: Extracting #1: cost 378 inf + 0
3.848 * * [simplify]: Extracting #2: cost 1741 inf + 8767
3.876 * * [simplify]: Extracting #3: cost 1092 inf + 138850
3.917 * * [simplify]: Extracting #4: cost 185 inf + 251345
3.974 * * [simplify]: Extracting #5: cost 22 inf + 291030
4.030 * * [simplify]: Extracting #6: cost 0 inf + 297799
4.087 * [simplify]: Simplified to:
  (exp (* (+ x y) (- x y)))
  (log (* (+ x y) (- x y)))
  (exp (* (+ 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)))
  (* (+ (* (* x x) x) (* y (* y y))) (- (* (* x x) x) (* y (* y y))))
  (+ (* (* y y) (+ (* y y) (* x x))) (* (* x x) (* x x)))
  (* (- y) y)
  (* (+ (* x x) (* y y)) (- (* x x) (* y y)))
  (+ (* x x) (* y y))
  (+ x y)
  (- x y)
  (* (- y) y)
  (* (+ x y) (- x y))
  (* (+ x y) (- x y))
  (* (+ x y) (- x y))
4.087 * * * [progress]: adding candidates to table
4.143 * * [progress]: iteration 2 / 4
4.143 * * * [progress]: picking best candidate
4.146 * * * * [pick]: Picked  #<alt (λ (x y) (* (+ x y) (- x y)))>
4.146 * * * [progress]: localizing error
4.156 * * * [progress]: generating rewritten candidates
4.156 * * * [progress]: generating series expansions
4.156 * * * [progress]: simplifying candidates
4.156 * [simplify]: Simplifying:
  
4.156 * * [simplify]: iteration 0: 0 enodes
4.156 * * [simplify]: iteration complete: 0 enodes
4.156 * * [simplify]: Extracting #0: cost 0 inf + 0
4.156 * [simplify]: Simplified to:
  
4.156 * * * [progress]: adding candidates to table
4.157 * [progress]: [Phase 3 of 3] Extracting.
4.163 * [simplify]: Simplifying:
  (* (+ x y) (- x y))
4.163 * * [simplify]: iteration 0: 5 enodes
4.164 * * [simplify]: iteration 1: 7 enodes
4.164 * * [simplify]: iteration complete: 7 enodes
4.164 * * [simplify]: Extracting #0: cost 1 inf + 0
4.164 * * [simplify]: Extracting #1: cost 3 inf + 0
4.164 * * [simplify]: Extracting #2: cost 5 inf + 0
4.164 * * [simplify]: Extracting #3: cost 3 inf + 2
4.164 * * [simplify]: Extracting #4: cost 0 inf + 208
4.164 * [simplify]: Simplified to:
  (* (+ y x) (- x y))
5.354 * [regime-testing]: Baseline error score: 0.0008751093886735842
5.371 * [regime-testing]: Oracle error score: 0.0008751093886735842
5.372 * [regime-testing]: End program error score: 0.0008751093886735842