20.550 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.029 * * * [progress]: [2/2] Setting up program.
0.032 * [progress]: [Phase 2 of 3] Improving.
0.040 * [simplify]: Simplifying:
  (- (* a a) (* b b))
0.041 * * [simplify]: iteration 0: 5 enodes
0.042 * * [simplify]: iteration 1: 11 enodes
0.044 * * [simplify]: iteration 2: 18 enodes
0.048 * * [simplify]: iteration 3: 35 enodes
0.058 * * [simplify]: iteration 4: 67 enodes
0.084 * * [simplify]: iteration 5: 160 enodes
0.144 * * [simplify]: iteration 6: 366 enodes
0.297 * * [simplify]: iteration 7: 901 enodes
1.753 * * [simplify]: iteration 8: 3866 enodes
3.442 * * [simplify]: iteration complete: 5000 enodes
3.442 * * [simplify]: Extracting #0: cost 1 inf + 0
3.444 * * [simplify]: Extracting #1: cost 251 inf + 0
3.454 * * [simplify]: Extracting #2: cost 671 inf + 8504
3.486 * * [simplify]: Extracting #3: cost 153 inf + 97580
3.564 * * [simplify]: Extracting #4: cost 0 inf + 129595
3.649 * [simplify]: Simplified to:
  (- (* a a) (* b b))
3.650 * * [progress]: iteration 1 / 4
3.650 * * * [progress]: picking best candidate
3.656 * * * * [pick]: Picked  #<alt (λ (a b) (- (* a a) (* b b)))>
3.656 * * * [progress]: localizing error
3.663 * * * [progress]: generating rewritten candidates
3.663 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
3.670 * * * [progress]: generating series expansions
3.670 * * * * [progress]: [ 1 / 1 ] generating series at (2)
3.670 * [backup-simplify]: Simplify (- (* a a) (* b b)) into (- (pow a 2) (pow b 2))
3.670 * [approximate]: Taking taylor expansion of (- (pow a 2) (pow b 2)) in (a b) around 0
3.670 * [taylor]: Taking taylor expansion of (- (pow a 2) (pow b 2)) in b
3.670 * [taylor]: Taking taylor expansion of (pow a 2) in b
3.670 * [taylor]: Taking taylor expansion of a in b
3.670 * [backup-simplify]: Simplify a into a
3.670 * [taylor]: Taking taylor expansion of (pow b 2) in b
3.670 * [taylor]: Taking taylor expansion of b in b
3.670 * [backup-simplify]: Simplify 0 into 0
3.670 * [backup-simplify]: Simplify 1 into 1
3.670 * [taylor]: Taking taylor expansion of (- (pow a 2) (pow b 2)) in a
3.670 * [taylor]: Taking taylor expansion of (pow a 2) in a
3.671 * [taylor]: Taking taylor expansion of a in a
3.671 * [backup-simplify]: Simplify 0 into 0
3.671 * [backup-simplify]: Simplify 1 into 1
3.671 * [taylor]: Taking taylor expansion of (pow b 2) in a
3.671 * [taylor]: Taking taylor expansion of b in a
3.671 * [backup-simplify]: Simplify b into b
3.671 * [taylor]: Taking taylor expansion of (- (pow a 2) (pow b 2)) in a
3.671 * [taylor]: Taking taylor expansion of (pow a 2) in a
3.671 * [taylor]: Taking taylor expansion of a in a
3.671 * [backup-simplify]: Simplify 0 into 0
3.671 * [backup-simplify]: Simplify 1 into 1
3.671 * [taylor]: Taking taylor expansion of (pow b 2) in a
3.671 * [taylor]: Taking taylor expansion of b in a
3.671 * [backup-simplify]: Simplify b into b
3.671 * [backup-simplify]: Simplify (* b b) into (pow b 2)
3.671 * [backup-simplify]: Simplify (- (pow b 2)) into (- (pow b 2))
3.671 * [backup-simplify]: Simplify (+ 0 (- (pow b 2))) into (- (pow b 2))
3.671 * [taylor]: Taking taylor expansion of (- (pow b 2)) in b
3.671 * [taylor]: Taking taylor expansion of (pow b 2) in b
3.671 * [taylor]: Taking taylor expansion of b in b
3.671 * [backup-simplify]: Simplify 0 into 0
3.671 * [backup-simplify]: Simplify 1 into 1
3.671 * [backup-simplify]: Simplify (+ (* b 0) (* 0 b)) into 0
3.672 * [backup-simplify]: Simplify (- 0) into 0
3.672 * [backup-simplify]: Simplify (+ 0 0) into 0
3.672 * [taylor]: Taking taylor expansion of 0 in b
3.672 * [backup-simplify]: Simplify 0 into 0
3.672 * [backup-simplify]: Simplify 0 into 0
3.672 * [backup-simplify]: Simplify (* 1 1) into 1
3.672 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (* 0 b))) into 0
3.673 * [backup-simplify]: Simplify (- 0) into 0
3.673 * [backup-simplify]: Simplify (+ 1 0) into 1
3.673 * [taylor]: Taking taylor expansion of 1 in b
3.673 * [backup-simplify]: Simplify 1 into 1
3.673 * [backup-simplify]: Simplify 1 into 1
3.673 * [backup-simplify]: Simplify 0 into 0
3.673 * [backup-simplify]: Simplify (* 1 1) into 1
3.674 * [backup-simplify]: Simplify (- 1) into -1
3.674 * [backup-simplify]: Simplify -1 into -1
3.674 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.675 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (+ (* 0 0) (* 0 b)))) into 0
3.675 * [backup-simplify]: Simplify (- 0) into 0
3.675 * [backup-simplify]: Simplify (+ 0 0) into 0
3.675 * [taylor]: Taking taylor expansion of 0 in b
3.675 * [backup-simplify]: Simplify 0 into 0
3.675 * [backup-simplify]: Simplify 0 into 0
3.675 * [backup-simplify]: Simplify 0 into 0
3.675 * [backup-simplify]: Simplify 0 into 0
3.675 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.676 * [backup-simplify]: Simplify (- 0) into 0
3.676 * [backup-simplify]: Simplify 0 into 0
3.676 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.677 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 b))))) into 0
3.677 * [backup-simplify]: Simplify (- 0) into 0
3.677 * [backup-simplify]: Simplify (+ 0 0) into 0
3.678 * [taylor]: Taking taylor expansion of 0 in b
3.678 * [backup-simplify]: Simplify 0 into 0
3.678 * [backup-simplify]: Simplify 0 into 0
3.678 * [backup-simplify]: Simplify 0 into 0
3.678 * [backup-simplify]: Simplify (+ (* -1 (pow (* b 1) 2)) (* 1 (pow (* 1 a) 2))) into (- (pow a 2) (pow b 2))
3.678 * [backup-simplify]: Simplify (- (* (/ 1 a) (/ 1 a)) (* (/ 1 b) (/ 1 b))) into (- (/ 1 (pow a 2)) (/ 1 (pow b 2)))
3.678 * [approximate]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in (a b) around 0
3.678 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in b
3.678 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in b
3.678 * [taylor]: Taking taylor expansion of (pow a 2) in b
3.678 * [taylor]: Taking taylor expansion of a in b
3.678 * [backup-simplify]: Simplify a into a
3.678 * [backup-simplify]: Simplify (* a a) into (pow a 2)
3.678 * [backup-simplify]: Simplify (/ 1 (pow a 2)) into (/ 1 (pow a 2))
3.678 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in b
3.678 * [taylor]: Taking taylor expansion of (pow b 2) in b
3.678 * [taylor]: Taking taylor expansion of b in b
3.678 * [backup-simplify]: Simplify 0 into 0
3.678 * [backup-simplify]: Simplify 1 into 1
3.679 * [backup-simplify]: Simplify (* 1 1) into 1
3.679 * [backup-simplify]: Simplify (/ 1 1) into 1
3.679 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in a
3.679 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in a
3.679 * [taylor]: Taking taylor expansion of (pow a 2) in a
3.679 * [taylor]: Taking taylor expansion of a in a
3.679 * [backup-simplify]: Simplify 0 into 0
3.679 * [backup-simplify]: Simplify 1 into 1
3.679 * [backup-simplify]: Simplify (* 1 1) into 1
3.679 * [backup-simplify]: Simplify (/ 1 1) into 1
3.679 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in a
3.679 * [taylor]: Taking taylor expansion of (pow b 2) in a
3.679 * [taylor]: Taking taylor expansion of b in a
3.679 * [backup-simplify]: Simplify b into b
3.679 * [backup-simplify]: Simplify (* b b) into (pow b 2)
3.680 * [backup-simplify]: Simplify (/ 1 (pow b 2)) into (/ 1 (pow b 2))
3.680 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in a
3.680 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in a
3.680 * [taylor]: Taking taylor expansion of (pow a 2) in a
3.680 * [taylor]: Taking taylor expansion of a in a
3.680 * [backup-simplify]: Simplify 0 into 0
3.680 * [backup-simplify]: Simplify 1 into 1
3.680 * [backup-simplify]: Simplify (* 1 1) into 1
3.680 * [backup-simplify]: Simplify (/ 1 1) into 1
3.680 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in a
3.680 * [taylor]: Taking taylor expansion of (pow b 2) in a
3.680 * [taylor]: Taking taylor expansion of b in a
3.680 * [backup-simplify]: Simplify b into b
3.680 * [backup-simplify]: Simplify (* b b) into (pow b 2)
3.680 * [backup-simplify]: Simplify (/ 1 (pow b 2)) into (/ 1 (pow b 2))
3.681 * [backup-simplify]: Simplify (+ 1 0) into 1
3.681 * [taylor]: Taking taylor expansion of 1 in b
3.681 * [backup-simplify]: Simplify 1 into 1
3.681 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.681 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.682 * [backup-simplify]: Simplify (+ 0 0) into 0
3.682 * [taylor]: Taking taylor expansion of 0 in b
3.682 * [backup-simplify]: Simplify 0 into 0
3.682 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.683 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.683 * [backup-simplify]: Simplify (- (/ 1 (pow b 2))) into (- (/ 1 (pow b 2)))
3.683 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow b 2)))) into (- (/ 1 (pow b 2)))
3.683 * [taylor]: Taking taylor expansion of (- (/ 1 (pow b 2))) in b
3.683 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in b
3.683 * [taylor]: Taking taylor expansion of (pow b 2) in b
3.683 * [taylor]: Taking taylor expansion of b in b
3.683 * [backup-simplify]: Simplify 0 into 0
3.683 * [backup-simplify]: Simplify 1 into 1
3.683 * [backup-simplify]: Simplify (* 1 1) into 1
3.684 * [backup-simplify]: Simplify (/ 1 1) into 1
3.684 * [backup-simplify]: Simplify (- 1) into -1
3.684 * [backup-simplify]: Simplify -1 into -1
3.684 * [backup-simplify]: Simplify 1 into 1
3.685 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.685 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.685 * [backup-simplify]: Simplify (+ (* b 0) (* 0 b)) into 0
3.685 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow b 2)) (/ 0 (pow b 2))))) into 0
3.686 * [backup-simplify]: Simplify (- 0) into 0
3.686 * [backup-simplify]: Simplify (+ 0 0) into 0
3.686 * [taylor]: Taking taylor expansion of 0 in b
3.686 * [backup-simplify]: Simplify 0 into 0
3.686 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.687 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.687 * [backup-simplify]: Simplify (- 0) into 0
3.687 * [backup-simplify]: Simplify 0 into 0
3.687 * [backup-simplify]: Simplify 0 into 0
3.687 * [backup-simplify]: Simplify 0 into 0
3.688 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.688 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.689 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (* 0 b))) into 0
3.689 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow b 2)) (/ 0 (pow b 2))) (* 0 (/ 0 (pow b 2))))) into 0
3.689 * [backup-simplify]: Simplify (- 0) into 0
3.690 * [backup-simplify]: Simplify (+ 0 0) into 0
3.690 * [taylor]: Taking taylor expansion of 0 in b
3.690 * [backup-simplify]: Simplify 0 into 0
3.690 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.691 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.691 * [backup-simplify]: Simplify (- 0) into 0
3.691 * [backup-simplify]: Simplify 0 into 0
3.691 * [backup-simplify]: Simplify 0 into 0
3.691 * [backup-simplify]: Simplify 0 into 0
3.691 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 a))) 2)) (* -1 (pow (* (/ 1 (/ 1 b)) 1) 2))) into (- (pow a 2) (pow b 2))
3.692 * [backup-simplify]: Simplify (- (* (/ 1 (- a)) (/ 1 (- a))) (* (/ 1 (- b)) (/ 1 (- b)))) into (- (/ 1 (pow a 2)) (/ 1 (pow b 2)))
3.692 * [approximate]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in (a b) around 0
3.692 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in b
3.692 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in b
3.692 * [taylor]: Taking taylor expansion of (pow a 2) in b
3.692 * [taylor]: Taking taylor expansion of a in b
3.692 * [backup-simplify]: Simplify a into a
3.692 * [backup-simplify]: Simplify (* a a) into (pow a 2)
3.692 * [backup-simplify]: Simplify (/ 1 (pow a 2)) into (/ 1 (pow a 2))
3.692 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in b
3.692 * [taylor]: Taking taylor expansion of (pow b 2) in b
3.692 * [taylor]: Taking taylor expansion of b in b
3.692 * [backup-simplify]: Simplify 0 into 0
3.692 * [backup-simplify]: Simplify 1 into 1
3.693 * [backup-simplify]: Simplify (* 1 1) into 1
3.693 * [backup-simplify]: Simplify (/ 1 1) into 1
3.693 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in a
3.693 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in a
3.693 * [taylor]: Taking taylor expansion of (pow a 2) in a
3.693 * [taylor]: Taking taylor expansion of a in a
3.693 * [backup-simplify]: Simplify 0 into 0
3.693 * [backup-simplify]: Simplify 1 into 1
3.694 * [backup-simplify]: Simplify (* 1 1) into 1
3.694 * [backup-simplify]: Simplify (/ 1 1) into 1
3.694 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in a
3.694 * [taylor]: Taking taylor expansion of (pow b 2) in a
3.694 * [taylor]: Taking taylor expansion of b in a
3.694 * [backup-simplify]: Simplify b into b
3.694 * [backup-simplify]: Simplify (* b b) into (pow b 2)
3.694 * [backup-simplify]: Simplify (/ 1 (pow b 2)) into (/ 1 (pow b 2))
3.694 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in a
3.694 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in a
3.694 * [taylor]: Taking taylor expansion of (pow a 2) in a
3.695 * [taylor]: Taking taylor expansion of a in a
3.695 * [backup-simplify]: Simplify 0 into 0
3.695 * [backup-simplify]: Simplify 1 into 1
3.695 * [backup-simplify]: Simplify (* 1 1) into 1
3.695 * [backup-simplify]: Simplify (/ 1 1) into 1
3.695 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in a
3.695 * [taylor]: Taking taylor expansion of (pow b 2) in a
3.695 * [taylor]: Taking taylor expansion of b in a
3.695 * [backup-simplify]: Simplify b into b
3.696 * [backup-simplify]: Simplify (* b b) into (pow b 2)
3.696 * [backup-simplify]: Simplify (/ 1 (pow b 2)) into (/ 1 (pow b 2))
3.696 * [backup-simplify]: Simplify (+ 1 0) into 1
3.696 * [taylor]: Taking taylor expansion of 1 in b
3.696 * [backup-simplify]: Simplify 1 into 1
3.697 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.697 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.698 * [backup-simplify]: Simplify (+ 0 0) into 0
3.698 * [taylor]: Taking taylor expansion of 0 in b
3.698 * [backup-simplify]: Simplify 0 into 0
3.699 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.700 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.700 * [backup-simplify]: Simplify (- (/ 1 (pow b 2))) into (- (/ 1 (pow b 2)))
3.700 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow b 2)))) into (- (/ 1 (pow b 2)))
3.700 * [taylor]: Taking taylor expansion of (- (/ 1 (pow b 2))) in b
3.700 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in b
3.700 * [taylor]: Taking taylor expansion of (pow b 2) in b
3.700 * [taylor]: Taking taylor expansion of b in b
3.700 * [backup-simplify]: Simplify 0 into 0
3.700 * [backup-simplify]: Simplify 1 into 1
3.701 * [backup-simplify]: Simplify (* 1 1) into 1
3.701 * [backup-simplify]: Simplify (/ 1 1) into 1
3.702 * [backup-simplify]: Simplify (- 1) into -1
3.702 * [backup-simplify]: Simplify -1 into -1
3.702 * [backup-simplify]: Simplify 1 into 1
3.703 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.704 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.704 * [backup-simplify]: Simplify (+ (* b 0) (* 0 b)) into 0
3.704 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow b 2)) (/ 0 (pow b 2))))) into 0
3.705 * [backup-simplify]: Simplify (- 0) into 0
3.705 * [backup-simplify]: Simplify (+ 0 0) into 0
3.705 * [taylor]: Taking taylor expansion of 0 in b
3.705 * [backup-simplify]: Simplify 0 into 0
3.706 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.707 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.707 * [backup-simplify]: Simplify (- 0) into 0
3.707 * [backup-simplify]: Simplify 0 into 0
3.707 * [backup-simplify]: Simplify 0 into 0
3.707 * [backup-simplify]: Simplify 0 into 0
3.708 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.709 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.710 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (* 0 b))) into 0
3.710 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow b 2)) (/ 0 (pow b 2))) (* 0 (/ 0 (pow b 2))))) into 0
3.711 * [backup-simplify]: Simplify (- 0) into 0
3.711 * [backup-simplify]: Simplify (+ 0 0) into 0
3.711 * [taylor]: Taking taylor expansion of 0 in b
3.711 * [backup-simplify]: Simplify 0 into 0
3.712 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.713 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.713 * [backup-simplify]: Simplify (- 0) into 0
3.713 * [backup-simplify]: Simplify 0 into 0
3.714 * [backup-simplify]: Simplify 0 into 0
3.714 * [backup-simplify]: Simplify 0 into 0
3.714 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 (- a)))) 2)) (* -1 (pow (* (/ 1 (/ 1 (- b))) 1) 2))) into (- (pow a 2) (pow b 2))
3.714 * * * [progress]: simplifying candidates
3.715 * [simplify]: Simplifying:
  (fma a a (- (* b b)))
  (fma (- b) b (* b b))
  (expm1 (- (* a a) (* b b)))
  (log1p (- (* a a) (* b b)))
  (- (* b b))
  (/ (exp (* a a)) (exp (* b b)))
  (log (- (* a a) (* b b)))
  (exp (- (* a a) (* b b)))
  (* (cbrt (- (* a a) (* b b))) (cbrt (- (* a a) (* b b))))
  (cbrt (- (* a a) (* b b)))
  (* (* (- (* a a) (* b b)) (- (* a a) (* b b))) (- (* a a) (* b b)))
  (sqrt (- (* a a) (* b b)))
  (sqrt (- (* a a) (* b b)))
  (- (pow (* a a) 3) (pow (* b b) 3))
  (+ (* (* a a) (* a a)) (+ (* (* b b) (* b b)) (* (* a a) (* b b))))
  (- (* b b))
  (- (* (* a a) (* a a)) (* (* b b) (* b b)))
  (+ (* a a) (* b b))
  (+ a b)
  (- a b)
  (- (* b b))
  (- (pow a 2) (pow b 2))
  (- (pow a 2) (pow b 2))
  (- (pow a 2) (pow b 2))
3.716 * * [simplify]: iteration 0: 38 enodes
3.730 * * [simplify]: iteration 1: 118 enodes
3.829 * * [simplify]: iteration 2: 646 enodes
4.351 * * [simplify]: iteration complete: 5000 enodes
4.351 * * [simplify]: Extracting #0: cost 17 inf + 0
4.352 * * [simplify]: Extracting #1: cost 513 inf + 0
4.363 * * [simplify]: Extracting #2: cost 1932 inf + 5720
4.389 * * [simplify]: Extracting #3: cost 812 inf + 136094
4.457 * * [simplify]: Extracting #4: cost 122 inf + 247843
4.507 * * [simplify]: Extracting #5: cost 25 inf + 271779
4.559 * * [simplify]: Extracting #6: cost 0 inf + 281168
4.643 * [simplify]: Simplified to:
  (* (+ a b) (- a b))
  (* b (+ (- b) b))
  (expm1 (* (+ a b) (- a b)))
  (log1p (* (+ a b) (- a b)))
  (- (* b b))
  (exp (* (+ a b) (- a b)))
  (log (* (+ a b) (- a b)))
  (exp (* (+ a b) (- a b)))
  (* (cbrt (* (+ a b) (- a b))) (cbrt (* (+ a b) (- a b))))
  (cbrt (* (+ a b) (- a b)))
  (* (* (+ a b) (- a b)) (* (* (+ a b) (- a b)) (* (+ a b) (- a b))))
  (sqrt (* (+ a b) (- a b)))
  (sqrt (* (+ a b) (- a b)))
  (- (* (* (* a a) (* a a)) (* a a)) (* (* (* b b) (* b b)) (* b b)))
  (fma (* a a) (* a a) (* (* b b) (+ (* a a) (* b b))))
  (- (* b b))
  (* (+ (* a a) (* b b)) (- (* a a) (* b b)))
  (fma a a (* b b))
  (+ a b)
  (- a b)
  (- (* b b))
  (* (+ a b) (- a b))
  (* (+ a b) (- a b))
  (* (+ a b) (- a b))
4.645 * * * [progress]: adding candidates to table
4.732 * * [progress]: iteration 2 / 4
4.733 * * * [progress]: picking best candidate
4.738 * * * * [pick]: Picked  #<alt (λ (a b) (* (+ a b) (- a b)))>
4.738 * * * [progress]: localizing error
4.752 * * * [progress]: generating rewritten candidates
4.752 * * * [progress]: generating series expansions
4.752 * * * [progress]: simplifying candidates
4.752 * [simplify]: Simplifying:
  
4.752 * * [simplify]: iteration 0: 0 enodes
4.752 * * [simplify]: iteration complete: 0 enodes
4.752 * * [simplify]: Extracting #0: cost 0 inf + 0
4.752 * [simplify]: Simplified to:
  
4.752 * * * [progress]: adding candidates to table
4.753 * [progress]: [Phase 3 of 3] Extracting.
4.759 * [simplify]: Simplifying:
  (* (+ a b) (- a b))
4.759 * * [simplify]: iteration 0: 5 enodes
4.760 * * [simplify]: iteration 1: 7 enodes
4.760 * * [simplify]: iteration complete: 7 enodes
4.760 * * [simplify]: Extracting #0: cost 1 inf + 0
4.760 * * [simplify]: Extracting #1: cost 3 inf + 0
4.760 * * [simplify]: Extracting #2: cost 5 inf + 0
4.760 * * [simplify]: Extracting #3: cost 3 inf + 2
4.760 * * [simplify]: Extracting #4: cost 0 inf + 208
4.760 * [simplify]: Simplified to:
  (* (+ b a) (- a b))
6.431 * [regime-testing]: Baseline error score: 0.0012501562695336917
6.439 * [regime-testing]: Oracle error score: 0.0012501562695336917
6.440 * [regime-testing]: End program error score: 0.0012501562695336917
6.541 * [regime-testing]: Target error score: 0.0012501562695336917