13.567 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.019 * * * [progress]: [2/2] Setting up program.
0.022 * [progress]: [Phase 2 of 3] Improving.
0.022 * [simplify]: Simplifying:
  (- (* a a) (* b b))
0.022 * * [simplify]: iteration 0: 5 enodes
0.023 * * [simplify]: iteration 1: 11 enodes
0.025 * * [simplify]: iteration 2: 18 enodes
0.027 * * [simplify]: iteration 3: 35 enodes
0.037 * * [simplify]: iteration 4: 67 enodes
0.060 * * [simplify]: iteration 5: 160 enodes
0.110 * * [simplify]: iteration 6: 366 enodes
0.296 * * [simplify]: iteration 7: 901 enodes
1.811 * * [simplify]: iteration 8: 3866 enodes
3.676 * * [simplify]: iteration complete: 5000 enodes
3.676 * * [simplify]: Extracting #0: cost 1 inf + 0
3.677 * * [simplify]: Extracting #1: cost 251 inf + 0
3.688 * * [simplify]: Extracting #2: cost 671 inf + 8504
3.737 * * [simplify]: Extracting #3: cost 153 inf + 97580
3.798 * * [simplify]: Extracting #4: cost 0 inf + 129595
3.867 * [simplify]: Simplified to:
  (- (* a a) (* b b))
3.868 * * [progress]: iteration 1 / 4
3.868 * * * [progress]: picking best candidate
3.871 * * * * [pick]: Picked  #<alt (λ (a b) (- (* a a) (* b b)))>
3.871 * * * [progress]: localizing error
3.882 * * * [progress]: generating rewritten candidates
3.882 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
3.896 * * * [progress]: generating series expansions
3.896 * * * * [progress]: [ 1 / 1 ] generating series at (2)
3.896 * [backup-simplify]: Simplify (- (* a a) (* b b)) into (- (pow a 2) (pow b 2))
3.896 * [approximate]: Taking taylor expansion of (- (pow a 2) (pow b 2)) in (a b) around 0
3.896 * [taylor]: Taking taylor expansion of (- (pow a 2) (pow b 2)) in b
3.896 * [taylor]: Taking taylor expansion of (pow a 2) in b
3.896 * [taylor]: Taking taylor expansion of a in b
3.896 * [backup-simplify]: Simplify a into a
3.896 * [taylor]: Taking taylor expansion of (pow b 2) in b
3.896 * [taylor]: Taking taylor expansion of b in b
3.896 * [backup-simplify]: Simplify 0 into 0
3.896 * [backup-simplify]: Simplify 1 into 1
3.896 * [taylor]: Taking taylor expansion of (- (pow a 2) (pow b 2)) in a
3.896 * [taylor]: Taking taylor expansion of (pow a 2) in a
3.896 * [taylor]: Taking taylor expansion of a in a
3.896 * [backup-simplify]: Simplify 0 into 0
3.896 * [backup-simplify]: Simplify 1 into 1
3.896 * [taylor]: Taking taylor expansion of (pow b 2) in a
3.896 * [taylor]: Taking taylor expansion of b in a
3.896 * [backup-simplify]: Simplify b into b
3.896 * [taylor]: Taking taylor expansion of (- (pow a 2) (pow b 2)) in a
3.897 * [taylor]: Taking taylor expansion of (pow a 2) in a
3.897 * [taylor]: Taking taylor expansion of a in a
3.897 * [backup-simplify]: Simplify 0 into 0
3.897 * [backup-simplify]: Simplify 1 into 1
3.897 * [taylor]: Taking taylor expansion of (pow b 2) in a
3.897 * [taylor]: Taking taylor expansion of b in a
3.897 * [backup-simplify]: Simplify b into b
3.897 * [backup-simplify]: Simplify (* b b) into (pow b 2)
3.897 * [backup-simplify]: Simplify (- (pow b 2)) into (- (pow b 2))
3.897 * [backup-simplify]: Simplify (+ 0 (- (pow b 2))) into (- (pow b 2))
3.897 * [taylor]: Taking taylor expansion of (- (pow b 2)) in b
3.897 * [taylor]: Taking taylor expansion of (pow b 2) in b
3.897 * [taylor]: Taking taylor expansion of b in b
3.897 * [backup-simplify]: Simplify 0 into 0
3.897 * [backup-simplify]: Simplify 1 into 1
3.897 * [backup-simplify]: Simplify (+ (* b 0) (* 0 b)) into 0
3.898 * [backup-simplify]: Simplify (- 0) into 0
3.898 * [backup-simplify]: Simplify (+ 0 0) into 0
3.899 * [taylor]: Taking taylor expansion of 0 in b
3.899 * [backup-simplify]: Simplify 0 into 0
3.899 * [backup-simplify]: Simplify 0 into 0
3.899 * [backup-simplify]: Simplify (* 1 1) into 1
3.900 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (* 0 b))) into 0
3.900 * [backup-simplify]: Simplify (- 0) into 0
3.900 * [backup-simplify]: Simplify (+ 1 0) into 1
3.900 * [taylor]: Taking taylor expansion of 1 in b
3.901 * [backup-simplify]: Simplify 1 into 1
3.901 * [backup-simplify]: Simplify 1 into 1
3.901 * [backup-simplify]: Simplify 0 into 0
3.901 * [backup-simplify]: Simplify (* 1 1) into 1
3.901 * [backup-simplify]: Simplify (- 1) into -1
3.901 * [backup-simplify]: Simplify -1 into -1
3.902 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.903 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (+ (* 0 0) (* 0 b)))) into 0
3.903 * [backup-simplify]: Simplify (- 0) into 0
3.904 * [backup-simplify]: Simplify (+ 0 0) into 0
3.904 * [taylor]: Taking taylor expansion of 0 in b
3.904 * [backup-simplify]: Simplify 0 into 0
3.904 * [backup-simplify]: Simplify 0 into 0
3.904 * [backup-simplify]: Simplify 0 into 0
3.904 * [backup-simplify]: Simplify 0 into 0
3.905 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.905 * [backup-simplify]: Simplify (- 0) into 0
3.905 * [backup-simplify]: Simplify 0 into 0
3.906 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.908 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 b))))) into 0
3.908 * [backup-simplify]: Simplify (- 0) into 0
3.908 * [backup-simplify]: Simplify (+ 0 0) into 0
3.908 * [taylor]: Taking taylor expansion of 0 in b
3.908 * [backup-simplify]: Simplify 0 into 0
3.908 * [backup-simplify]: Simplify 0 into 0
3.908 * [backup-simplify]: Simplify 0 into 0
3.909 * [backup-simplify]: Simplify (+ (* -1 (pow (* b 1) 2)) (* 1 (pow (* 1 a) 2))) into (- (pow a 2) (pow b 2))
3.909 * [backup-simplify]: Simplify (- (* (/ 1 a) (/ 1 a)) (* (/ 1 b) (/ 1 b))) into (- (/ 1 (pow a 2)) (/ 1 (pow b 2)))
3.909 * [approximate]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in (a b) around 0
3.909 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in b
3.909 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in b
3.909 * [taylor]: Taking taylor expansion of (pow a 2) in b
3.909 * [taylor]: Taking taylor expansion of a in b
3.909 * [backup-simplify]: Simplify a into a
3.909 * [backup-simplify]: Simplify (* a a) into (pow a 2)
3.910 * [backup-simplify]: Simplify (/ 1 (pow a 2)) into (/ 1 (pow a 2))
3.910 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in b
3.910 * [taylor]: Taking taylor expansion of (pow b 2) in b
3.910 * [taylor]: Taking taylor expansion of b in b
3.910 * [backup-simplify]: Simplify 0 into 0
3.910 * [backup-simplify]: Simplify 1 into 1
3.910 * [backup-simplify]: Simplify (* 1 1) into 1
3.911 * [backup-simplify]: Simplify (/ 1 1) into 1
3.911 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in a
3.911 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in a
3.911 * [taylor]: Taking taylor expansion of (pow a 2) in a
3.911 * [taylor]: Taking taylor expansion of a in a
3.911 * [backup-simplify]: Simplify 0 into 0
3.911 * [backup-simplify]: Simplify 1 into 1
3.911 * [backup-simplify]: Simplify (* 1 1) into 1
3.912 * [backup-simplify]: Simplify (/ 1 1) into 1
3.912 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in a
3.912 * [taylor]: Taking taylor expansion of (pow b 2) in a
3.912 * [taylor]: Taking taylor expansion of b in a
3.912 * [backup-simplify]: Simplify b into b
3.912 * [backup-simplify]: Simplify (* b b) into (pow b 2)
3.912 * [backup-simplify]: Simplify (/ 1 (pow b 2)) into (/ 1 (pow b 2))
3.912 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in a
3.912 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in a
3.912 * [taylor]: Taking taylor expansion of (pow a 2) in a
3.912 * [taylor]: Taking taylor expansion of a in a
3.912 * [backup-simplify]: Simplify 0 into 0
3.912 * [backup-simplify]: Simplify 1 into 1
3.912 * [backup-simplify]: Simplify (* 1 1) into 1
3.913 * [backup-simplify]: Simplify (/ 1 1) into 1
3.913 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in a
3.913 * [taylor]: Taking taylor expansion of (pow b 2) in a
3.913 * [taylor]: Taking taylor expansion of b in a
3.913 * [backup-simplify]: Simplify b into b
3.913 * [backup-simplify]: Simplify (* b b) into (pow b 2)
3.913 * [backup-simplify]: Simplify (/ 1 (pow b 2)) into (/ 1 (pow b 2))
3.914 * [backup-simplify]: Simplify (+ 1 0) into 1
3.914 * [taylor]: Taking taylor expansion of 1 in b
3.914 * [backup-simplify]: Simplify 1 into 1
3.914 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.915 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.916 * [backup-simplify]: Simplify (+ 0 0) into 0
3.916 * [taylor]: Taking taylor expansion of 0 in b
3.916 * [backup-simplify]: Simplify 0 into 0
3.917 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.917 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.918 * [backup-simplify]: Simplify (- (/ 1 (pow b 2))) into (- (/ 1 (pow b 2)))
3.918 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow b 2)))) into (- (/ 1 (pow b 2)))
3.918 * [taylor]: Taking taylor expansion of (- (/ 1 (pow b 2))) in b
3.918 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in b
3.918 * [taylor]: Taking taylor expansion of (pow b 2) in b
3.918 * [taylor]: Taking taylor expansion of b in b
3.918 * [backup-simplify]: Simplify 0 into 0
3.918 * [backup-simplify]: Simplify 1 into 1
3.918 * [backup-simplify]: Simplify (* 1 1) into 1
3.919 * [backup-simplify]: Simplify (/ 1 1) into 1
3.919 * [backup-simplify]: Simplify (- 1) into -1
3.919 * [backup-simplify]: Simplify -1 into -1
3.919 * [backup-simplify]: Simplify 1 into 1
3.920 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.921 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.921 * [backup-simplify]: Simplify (+ (* b 0) (* 0 b)) into 0
3.922 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow b 2)) (/ 0 (pow b 2))))) into 0
3.922 * [backup-simplify]: Simplify (- 0) into 0
3.923 * [backup-simplify]: Simplify (+ 0 0) into 0
3.923 * [taylor]: Taking taylor expansion of 0 in b
3.923 * [backup-simplify]: Simplify 0 into 0
3.923 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.924 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.925 * [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 into 0
3.926 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.927 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.927 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (* 0 b))) into 0
3.928 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow b 2)) (/ 0 (pow b 2))) (* 0 (/ 0 (pow b 2))))) into 0
3.928 * [backup-simplify]: Simplify (- 0) into 0
3.929 * [backup-simplify]: Simplify (+ 0 0) into 0
3.929 * [taylor]: Taking taylor expansion of 0 in b
3.929 * [backup-simplify]: Simplify 0 into 0
3.930 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.931 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.932 * [backup-simplify]: Simplify (- 0) into 0
3.932 * [backup-simplify]: Simplify 0 into 0
3.932 * [backup-simplify]: Simplify 0 into 0
3.932 * [backup-simplify]: Simplify 0 into 0
3.932 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 a))) 2)) (* -1 (pow (* (/ 1 (/ 1 b)) 1) 2))) into (- (pow a 2) (pow b 2))
3.933 * [backup-simplify]: Simplify (- (* (/ 1 (- a)) (/ 1 (- a))) (* (/ 1 (- b)) (/ 1 (- b)))) into (- (/ 1 (pow a 2)) (/ 1 (pow b 2)))
3.933 * [approximate]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in (a b) around 0
3.933 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in b
3.933 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in b
3.933 * [taylor]: Taking taylor expansion of (pow a 2) in b
3.933 * [taylor]: Taking taylor expansion of a in b
3.933 * [backup-simplify]: Simplify a into a
3.933 * [backup-simplify]: Simplify (* a a) into (pow a 2)
3.933 * [backup-simplify]: Simplify (/ 1 (pow a 2)) into (/ 1 (pow a 2))
3.933 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in b
3.933 * [taylor]: Taking taylor expansion of (pow b 2) in b
3.933 * [taylor]: Taking taylor expansion of b in b
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 * [backup-simplify]: Simplify (/ 1 1) into 1
3.934 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in a
3.934 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in a
3.934 * [taylor]: Taking taylor expansion of (pow a 2) in a
3.934 * [taylor]: Taking taylor expansion of a in a
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
3.935 * [backup-simplify]: Simplify (/ 1 1) into 1
3.935 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in a
3.935 * [taylor]: Taking taylor expansion of (pow b 2) in a
3.935 * [taylor]: Taking taylor expansion of b in a
3.935 * [backup-simplify]: Simplify b into b
3.935 * [backup-simplify]: Simplify (* b b) into (pow b 2)
3.935 * [backup-simplify]: Simplify (/ 1 (pow b 2)) into (/ 1 (pow b 2))
3.935 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in a
3.935 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in a
3.935 * [taylor]: Taking taylor expansion of (pow a 2) in a
3.935 * [taylor]: Taking taylor expansion of a in a
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 * [backup-simplify]: Simplify (/ 1 1) into 1
3.936 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in a
3.936 * [taylor]: Taking taylor expansion of (pow b 2) in a
3.936 * [taylor]: Taking taylor expansion of b in a
3.936 * [backup-simplify]: Simplify b into b
3.936 * [backup-simplify]: Simplify (* b b) into (pow b 2)
3.937 * [backup-simplify]: Simplify (/ 1 (pow b 2)) into (/ 1 (pow b 2))
3.937 * [backup-simplify]: Simplify (+ 1 0) into 1
3.937 * [taylor]: Taking taylor expansion of 1 in b
3.937 * [backup-simplify]: Simplify 1 into 1
3.938 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.939 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.939 * [backup-simplify]: Simplify (+ 0 0) into 0
3.939 * [taylor]: Taking taylor expansion of 0 in b
3.939 * [backup-simplify]: Simplify 0 into 0
3.940 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.941 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.941 * [backup-simplify]: Simplify (- (/ 1 (pow b 2))) into (- (/ 1 (pow b 2)))
3.941 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow b 2)))) into (- (/ 1 (pow b 2)))
3.941 * [taylor]: Taking taylor expansion of (- (/ 1 (pow b 2))) in b
3.941 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in b
3.941 * [taylor]: Taking taylor expansion of (pow b 2) in b
3.941 * [taylor]: Taking taylor expansion of b in b
3.941 * [backup-simplify]: Simplify 0 into 0
3.941 * [backup-simplify]: Simplify 1 into 1
3.942 * [backup-simplify]: Simplify (* 1 1) into 1
3.942 * [backup-simplify]: Simplify (/ 1 1) into 1
3.943 * [backup-simplify]: Simplify (- 1) into -1
3.943 * [backup-simplify]: Simplify -1 into -1
3.943 * [backup-simplify]: Simplify 1 into 1
3.944 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.945 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.945 * [backup-simplify]: Simplify (+ (* b 0) (* 0 b)) into 0
3.945 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow b 2)) (/ 0 (pow b 2))))) into 0
3.946 * [backup-simplify]: Simplify (- 0) into 0
3.946 * [backup-simplify]: Simplify (+ 0 0) into 0
3.946 * [taylor]: Taking taylor expansion of 0 in b
3.946 * [backup-simplify]: Simplify 0 into 0
3.947 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.947 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.948 * [backup-simplify]: Simplify (- 0) into 0
3.948 * [backup-simplify]: Simplify 0 into 0
3.948 * [backup-simplify]: Simplify 0 into 0
3.948 * [backup-simplify]: Simplify 0 into 0
3.948 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.949 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.949 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (* 0 b))) into 0
3.949 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow b 2)) (/ 0 (pow b 2))) (* 0 (/ 0 (pow b 2))))) into 0
3.950 * [backup-simplify]: Simplify (- 0) into 0
3.950 * [backup-simplify]: Simplify (+ 0 0) into 0
3.950 * [taylor]: Taking taylor expansion of 0 in b
3.950 * [backup-simplify]: Simplify 0 into 0
3.951 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.951 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.951 * [backup-simplify]: Simplify (- 0) into 0
3.951 * [backup-simplify]: Simplify 0 into 0
3.951 * [backup-simplify]: Simplify 0 into 0
3.951 * [backup-simplify]: Simplify 0 into 0
3.952 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 (- a)))) 2)) (* -1 (pow (* (/ 1 (/ 1 (- b))) 1) 2))) into (- (pow a 2) (pow b 2))
3.952 * * * [progress]: simplifying candidates
3.952 * [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))
3.952 * * [simplify]: iteration 0: 38 enodes
3.960 * * [simplify]: iteration 1: 118 enodes
4.036 * * [simplify]: iteration 2: 646 enodes
4.490 * * [simplify]: iteration complete: 5000 enodes
4.490 * * [simplify]: Extracting #0: cost 17 inf + 0
4.492 * * [simplify]: Extracting #1: cost 513 inf + 0
4.497 * * [simplify]: Extracting #2: cost 1932 inf + 5720
4.533 * * [simplify]: Extracting #3: cost 812 inf + 136094
4.585 * * [simplify]: Extracting #4: cost 122 inf + 247843
4.638 * * [simplify]: Extracting #5: cost 25 inf + 271779
4.718 * * [simplify]: Extracting #6: cost 0 inf + 281168
4.774 * [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))
4.775 * * * [progress]: adding candidates to table
4.898 * * [progress]: iteration 2 / 4
4.898 * * * [progress]: picking best candidate
4.904 * * * * [pick]: Picked  #<alt (λ (a b) (* (+ a b) (- a b)))>
4.905 * * * [progress]: localizing error
4.918 * * * [progress]: generating rewritten candidates
4.918 * * * [progress]: generating series expansions
4.918 * * * [progress]: simplifying candidates
4.918 * [simplify]: Simplifying:
  
4.918 * * [simplify]: iteration 0: 0 enodes
4.918 * * [simplify]: iteration complete: 0 enodes
4.918 * * [simplify]: Extracting #0: cost 0 inf + 0
4.918 * [simplify]: Simplified to:
  
4.918 * * * [progress]: adding candidates to table
4.919 * [progress]: [Phase 3 of 3] Extracting.
4.925 * [simplify]: Simplifying:
  (* (+ a b) (- a b))
4.925 * * [simplify]: iteration 0: 5 enodes
4.926 * * [simplify]: iteration 1: 7 enodes
4.926 * * [simplify]: iteration complete: 7 enodes
4.926 * * [simplify]: Extracting #0: cost 1 inf + 0
4.926 * * [simplify]: Extracting #1: cost 3 inf + 0
4.927 * * [simplify]: Extracting #2: cost 5 inf + 0
4.927 * * [simplify]: Extracting #3: cost 3 inf + 2
4.927 * * [simplify]: Extracting #4: cost 0 inf + 208
4.927 * [simplify]: Simplified to:
  (* (+ b a) (- a b))
6.171 * [regime-testing]: Baseline error score: 0.0008751093886735842
6.179 * [regime-testing]: Oracle error score: 0.0008751093886735842
6.179 * [regime-testing]: End program error score: 0.0008751093886735842
6.299 * [regime-testing]: Target error score: 0.0008751093886735842