71.597 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.037 * * * [progress]: [2/2] Setting up program.
0.044 * [progress]: [Phase 2 of 3] Improving.
0.044 * [simplify]: Simplifying:
  (- (* a a) (* b b))
0.044 * * [simplify]: iteration 0: 5 enodes
0.047 * * [simplify]: iteration 1: 11 enodes
0.051 * * [simplify]: iteration 2: 18 enodes
0.058 * * [simplify]: iteration 3: 35 enodes
0.075 * * [simplify]: iteration 4: 66 enodes
0.128 * * [simplify]: iteration 5: 159 enodes
0.231 * * [simplify]: iteration 6: 283 enodes
0.464 * * [simplify]: iteration 7: 511 enodes
1.357 * * [simplify]: iteration 8: 1410 enodes
10.868 * * [simplify]: iteration 9: 4751 enodes
13.938 * * [simplify]: iteration complete: 5000 enodes
13.938 * * [simplify]: Extracting #0: cost 1 inf + 0
13.940 * * [simplify]: Extracting #1: cost 251 inf + 0
13.948 * * [simplify]: Extracting #2: cost 704 inf + 1021
13.976 * * [simplify]: Extracting #3: cost 448 inf + 41004
14.051 * * [simplify]: Extracting #4: cost 54 inf + 129000
14.149 * * [simplify]: Extracting #5: cost 0 inf + 142253
14.248 * [simplify]: Simplified to:
  (- (* a a) (* b b))
14.249 * * [progress]: iteration 1 / 4
14.249 * * * [progress]: picking best candidate
14.255 * * * * [pick]: Picked  #<alt (λ (a b) (- (* a a) (* b b)))>
14.255 * * * [progress]: localizing error
14.275 * * * [progress]: generating rewritten candidates
14.275 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
14.293 * * * [progress]: generating series expansions
14.293 * * * * [progress]: [ 1 / 1 ] generating series at (2)
14.294 * [backup-simplify]: Simplify (- (* a a) (* b b)) into (- (pow a 2) (pow b 2))
14.294 * [approximate]: Taking taylor expansion of (- (pow a 2) (pow b 2)) in (a b) around 0
14.294 * [taylor]: Taking taylor expansion of (- (pow a 2) (pow b 2)) in b
14.294 * [taylor]: Taking taylor expansion of (pow a 2) in b
14.294 * [taylor]: Taking taylor expansion of a in b
14.294 * [backup-simplify]: Simplify a into a
14.294 * [taylor]: Taking taylor expansion of (pow b 2) in b
14.294 * [taylor]: Taking taylor expansion of b in b
14.294 * [backup-simplify]: Simplify 0 into 0
14.294 * [backup-simplify]: Simplify 1 into 1
14.294 * [taylor]: Taking taylor expansion of (- (pow a 2) (pow b 2)) in a
14.294 * [taylor]: Taking taylor expansion of (pow a 2) in a
14.294 * [taylor]: Taking taylor expansion of a in a
14.294 * [backup-simplify]: Simplify 0 into 0
14.294 * [backup-simplify]: Simplify 1 into 1
14.294 * [taylor]: Taking taylor expansion of (pow b 2) in a
14.294 * [taylor]: Taking taylor expansion of b in a
14.294 * [backup-simplify]: Simplify b into b
14.294 * [taylor]: Taking taylor expansion of (- (pow a 2) (pow b 2)) in a
14.294 * [taylor]: Taking taylor expansion of (pow a 2) in a
14.294 * [taylor]: Taking taylor expansion of a in a
14.294 * [backup-simplify]: Simplify 0 into 0
14.294 * [backup-simplify]: Simplify 1 into 1
14.294 * [taylor]: Taking taylor expansion of (pow b 2) in a
14.295 * [taylor]: Taking taylor expansion of b in a
14.295 * [backup-simplify]: Simplify b into b
14.295 * [backup-simplify]: Simplify (* b b) into (pow b 2)
14.295 * [backup-simplify]: Simplify (- (pow b 2)) into (- (pow b 2))
14.295 * [backup-simplify]: Simplify (+ 0 (- (pow b 2))) into (- (pow b 2))
14.295 * [taylor]: Taking taylor expansion of (- (pow b 2)) in b
14.295 * [taylor]: Taking taylor expansion of (pow b 2) in b
14.295 * [taylor]: Taking taylor expansion of b in b
14.295 * [backup-simplify]: Simplify 0 into 0
14.295 * [backup-simplify]: Simplify 1 into 1
14.295 * [backup-simplify]: Simplify (+ (* b 0) (* 0 b)) into 0
14.296 * [backup-simplify]: Simplify (- 0) into 0
14.296 * [backup-simplify]: Simplify (+ 0 0) into 0
14.296 * [taylor]: Taking taylor expansion of 0 in b
14.296 * [backup-simplify]: Simplify 0 into 0
14.296 * [backup-simplify]: Simplify 0 into 0
14.297 * [backup-simplify]: Simplify (* 1 1) into 1
14.297 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (* 0 b))) into 0
14.298 * [backup-simplify]: Simplify (- 0) into 0
14.298 * [backup-simplify]: Simplify (+ 1 0) into 1
14.298 * [taylor]: Taking taylor expansion of 1 in b
14.298 * [backup-simplify]: Simplify 1 into 1
14.298 * [backup-simplify]: Simplify 1 into 1
14.298 * [backup-simplify]: Simplify 0 into 0
14.299 * [backup-simplify]: Simplify (* 1 1) into 1
14.299 * [backup-simplify]: Simplify (- 1) into -1
14.299 * [backup-simplify]: Simplify -1 into -1
14.300 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
14.301 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (+ (* 0 0) (* 0 b)))) into 0
14.301 * [backup-simplify]: Simplify (- 0) into 0
14.302 * [backup-simplify]: Simplify (+ 0 0) into 0
14.302 * [taylor]: Taking taylor expansion of 0 in b
14.302 * [backup-simplify]: Simplify 0 into 0
14.302 * [backup-simplify]: Simplify 0 into 0
14.302 * [backup-simplify]: Simplify 0 into 0
14.302 * [backup-simplify]: Simplify 0 into 0
14.303 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
14.303 * [backup-simplify]: Simplify (- 0) into 0
14.303 * [backup-simplify]: Simplify 0 into 0
14.304 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
14.305 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 b))))) into 0
14.306 * [backup-simplify]: Simplify (- 0) into 0
14.306 * [backup-simplify]: Simplify (+ 0 0) into 0
14.306 * [taylor]: Taking taylor expansion of 0 in b
14.306 * [backup-simplify]: Simplify 0 into 0
14.306 * [backup-simplify]: Simplify 0 into 0
14.306 * [backup-simplify]: Simplify 0 into 0
14.307 * [backup-simplify]: Simplify (+ (* -1 (pow (* b 1) 2)) (* 1 (pow (* 1 a) 2))) into (- (pow a 2) (pow b 2))
14.307 * [backup-simplify]: Simplify (- (* (/ 1 a) (/ 1 a)) (* (/ 1 b) (/ 1 b))) into (- (/ 1 (pow a 2)) (/ 1 (pow b 2)))
14.307 * [approximate]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in (a b) around 0
14.307 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in b
14.307 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in b
14.307 * [taylor]: Taking taylor expansion of (pow a 2) in b
14.307 * [taylor]: Taking taylor expansion of a in b
14.307 * [backup-simplify]: Simplify a into a
14.307 * [backup-simplify]: Simplify (* a a) into (pow a 2)
14.307 * [backup-simplify]: Simplify (/ 1 (pow a 2)) into (/ 1 (pow a 2))
14.307 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in b
14.308 * [taylor]: Taking taylor expansion of (pow b 2) in b
14.308 * [taylor]: Taking taylor expansion of b in b
14.308 * [backup-simplify]: Simplify 0 into 0
14.308 * [backup-simplify]: Simplify 1 into 1
14.308 * [backup-simplify]: Simplify (* 1 1) into 1
14.308 * [backup-simplify]: Simplify (/ 1 1) into 1
14.309 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in a
14.309 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in a
14.309 * [taylor]: Taking taylor expansion of (pow a 2) in a
14.309 * [taylor]: Taking taylor expansion of a in a
14.309 * [backup-simplify]: Simplify 0 into 0
14.309 * [backup-simplify]: Simplify 1 into 1
14.309 * [backup-simplify]: Simplify (* 1 1) into 1
14.309 * [backup-simplify]: Simplify (/ 1 1) into 1
14.309 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in a
14.309 * [taylor]: Taking taylor expansion of (pow b 2) in a
14.310 * [taylor]: Taking taylor expansion of b in a
14.310 * [backup-simplify]: Simplify b into b
14.310 * [backup-simplify]: Simplify (* b b) into (pow b 2)
14.310 * [backup-simplify]: Simplify (/ 1 (pow b 2)) into (/ 1 (pow b 2))
14.310 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in a
14.310 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in a
14.310 * [taylor]: Taking taylor expansion of (pow a 2) in a
14.310 * [taylor]: Taking taylor expansion of a in a
14.310 * [backup-simplify]: Simplify 0 into 0
14.310 * [backup-simplify]: Simplify 1 into 1
14.311 * [backup-simplify]: Simplify (* 1 1) into 1
14.311 * [backup-simplify]: Simplify (/ 1 1) into 1
14.311 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in a
14.311 * [taylor]: Taking taylor expansion of (pow b 2) in a
14.311 * [taylor]: Taking taylor expansion of b in a
14.311 * [backup-simplify]: Simplify b into b
14.311 * [backup-simplify]: Simplify (* b b) into (pow b 2)
14.311 * [backup-simplify]: Simplify (/ 1 (pow b 2)) into (/ 1 (pow b 2))
14.312 * [backup-simplify]: Simplify (+ 1 0) into 1
14.312 * [taylor]: Taking taylor expansion of 1 in b
14.312 * [backup-simplify]: Simplify 1 into 1
14.313 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
14.313 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
14.314 * [backup-simplify]: Simplify (+ 0 0) into 0
14.314 * [taylor]: Taking taylor expansion of 0 in b
14.314 * [backup-simplify]: Simplify 0 into 0
14.315 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
14.316 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
14.316 * [backup-simplify]: Simplify (- (/ 1 (pow b 2))) into (- (/ 1 (pow b 2)))
14.316 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow b 2)))) into (- (/ 1 (pow b 2)))
14.316 * [taylor]: Taking taylor expansion of (- (/ 1 (pow b 2))) in b
14.316 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in b
14.316 * [taylor]: Taking taylor expansion of (pow b 2) in b
14.316 * [taylor]: Taking taylor expansion of b in b
14.316 * [backup-simplify]: Simplify 0 into 0
14.316 * [backup-simplify]: Simplify 1 into 1
14.317 * [backup-simplify]: Simplify (* 1 1) into 1
14.317 * [backup-simplify]: Simplify (/ 1 1) into 1
14.317 * [backup-simplify]: Simplify (- 1) into -1
14.318 * [backup-simplify]: Simplify -1 into -1
14.318 * [backup-simplify]: Simplify 1 into 1
14.319 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
14.320 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
14.320 * [backup-simplify]: Simplify (+ (* b 0) (* 0 b)) into 0
14.320 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow b 2)) (/ 0 (pow b 2))))) into 0
14.320 * [backup-simplify]: Simplify (- 0) into 0
14.321 * [backup-simplify]: Simplify (+ 0 0) into 0
14.321 * [taylor]: Taking taylor expansion of 0 in b
14.321 * [backup-simplify]: Simplify 0 into 0
14.321 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
14.322 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
14.322 * [backup-simplify]: Simplify (- 0) into 0
14.322 * [backup-simplify]: Simplify 0 into 0
14.322 * [backup-simplify]: Simplify 0 into 0
14.322 * [backup-simplify]: Simplify 0 into 0
14.324 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
14.325 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
14.325 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (* 0 b))) into 0
14.326 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow b 2)) (/ 0 (pow b 2))) (* 0 (/ 0 (pow b 2))))) into 0
14.326 * [backup-simplify]: Simplify (- 0) into 0
14.326 * [backup-simplify]: Simplify (+ 0 0) into 0
14.326 * [taylor]: Taking taylor expansion of 0 in b
14.326 * [backup-simplify]: Simplify 0 into 0
14.327 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
14.328 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
14.329 * [backup-simplify]: Simplify (- 0) into 0
14.329 * [backup-simplify]: Simplify 0 into 0
14.329 * [backup-simplify]: Simplify 0 into 0
14.329 * [backup-simplify]: Simplify 0 into 0
14.329 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 a))) 2)) (* -1 (pow (* (/ 1 (/ 1 b)) 1) 2))) into (- (pow a 2) (pow b 2))
14.330 * [backup-simplify]: Simplify (- (* (/ 1 (- a)) (/ 1 (- a))) (* (/ 1 (- b)) (/ 1 (- b)))) into (- (/ 1 (pow a 2)) (/ 1 (pow b 2)))
14.330 * [approximate]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in (a b) around 0
14.330 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in b
14.330 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in b
14.330 * [taylor]: Taking taylor expansion of (pow a 2) in b
14.330 * [taylor]: Taking taylor expansion of a in b
14.330 * [backup-simplify]: Simplify a into a
14.330 * [backup-simplify]: Simplify (* a a) into (pow a 2)
14.330 * [backup-simplify]: Simplify (/ 1 (pow a 2)) into (/ 1 (pow a 2))
14.330 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in b
14.330 * [taylor]: Taking taylor expansion of (pow b 2) in b
14.330 * [taylor]: Taking taylor expansion of b in b
14.330 * [backup-simplify]: Simplify 0 into 0
14.330 * [backup-simplify]: Simplify 1 into 1
14.331 * [backup-simplify]: Simplify (* 1 1) into 1
14.331 * [backup-simplify]: Simplify (/ 1 1) into 1
14.331 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in a
14.331 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in a
14.331 * [taylor]: Taking taylor expansion of (pow a 2) in a
14.331 * [taylor]: Taking taylor expansion of a in a
14.331 * [backup-simplify]: Simplify 0 into 0
14.331 * [backup-simplify]: Simplify 1 into 1
14.331 * [backup-simplify]: Simplify (* 1 1) into 1
14.332 * [backup-simplify]: Simplify (/ 1 1) into 1
14.332 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in a
14.332 * [taylor]: Taking taylor expansion of (pow b 2) in a
14.332 * [taylor]: Taking taylor expansion of b in a
14.332 * [backup-simplify]: Simplify b into b
14.332 * [backup-simplify]: Simplify (* b b) into (pow b 2)
14.332 * [backup-simplify]: Simplify (/ 1 (pow b 2)) into (/ 1 (pow b 2))
14.332 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in a
14.332 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in a
14.332 * [taylor]: Taking taylor expansion of (pow a 2) in a
14.332 * [taylor]: Taking taylor expansion of a in a
14.332 * [backup-simplify]: Simplify 0 into 0
14.332 * [backup-simplify]: Simplify 1 into 1
14.333 * [backup-simplify]: Simplify (* 1 1) into 1
14.333 * [backup-simplify]: Simplify (/ 1 1) into 1
14.333 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in a
14.333 * [taylor]: Taking taylor expansion of (pow b 2) in a
14.333 * [taylor]: Taking taylor expansion of b in a
14.333 * [backup-simplify]: Simplify b into b
14.334 * [backup-simplify]: Simplify (* b b) into (pow b 2)
14.334 * [backup-simplify]: Simplify (/ 1 (pow b 2)) into (/ 1 (pow b 2))
14.335 * [backup-simplify]: Simplify (+ 1 0) into 1
14.335 * [taylor]: Taking taylor expansion of 1 in b
14.335 * [backup-simplify]: Simplify 1 into 1
14.336 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
14.337 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
14.338 * [backup-simplify]: Simplify (+ 0 0) into 0
14.338 * [taylor]: Taking taylor expansion of 0 in b
14.338 * [backup-simplify]: Simplify 0 into 0
14.339 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
14.340 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
14.340 * [backup-simplify]: Simplify (- (/ 1 (pow b 2))) into (- (/ 1 (pow b 2)))
14.340 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow b 2)))) into (- (/ 1 (pow b 2)))
14.340 * [taylor]: Taking taylor expansion of (- (/ 1 (pow b 2))) in b
14.340 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in b
14.340 * [taylor]: Taking taylor expansion of (pow b 2) in b
14.340 * [taylor]: Taking taylor expansion of b in b
14.340 * [backup-simplify]: Simplify 0 into 0
14.340 * [backup-simplify]: Simplify 1 into 1
14.341 * [backup-simplify]: Simplify (* 1 1) into 1
14.341 * [backup-simplify]: Simplify (/ 1 1) into 1
14.341 * [backup-simplify]: Simplify (- 1) into -1
14.342 * [backup-simplify]: Simplify -1 into -1
14.342 * [backup-simplify]: Simplify 1 into 1
14.343 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
14.344 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
14.344 * [backup-simplify]: Simplify (+ (* b 0) (* 0 b)) into 0
14.344 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow b 2)) (/ 0 (pow b 2))))) into 0
14.344 * [backup-simplify]: Simplify (- 0) into 0
14.345 * [backup-simplify]: Simplify (+ 0 0) into 0
14.345 * [taylor]: Taking taylor expansion of 0 in b
14.345 * [backup-simplify]: Simplify 0 into 0
14.345 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
14.346 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
14.347 * [backup-simplify]: Simplify (- 0) into 0
14.347 * [backup-simplify]: Simplify 0 into 0
14.347 * [backup-simplify]: Simplify 0 into 0
14.347 * [backup-simplify]: Simplify 0 into 0
14.348 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
14.349 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
14.350 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (* 0 b))) into 0
14.350 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow b 2)) (/ 0 (pow b 2))) (* 0 (/ 0 (pow b 2))))) into 0
14.351 * [backup-simplify]: Simplify (- 0) into 0
14.351 * [backup-simplify]: Simplify (+ 0 0) into 0
14.351 * [taylor]: Taking taylor expansion of 0 in b
14.351 * [backup-simplify]: Simplify 0 into 0
14.352 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
14.353 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
14.354 * [backup-simplify]: Simplify (- 0) into 0
14.354 * [backup-simplify]: Simplify 0 into 0
14.354 * [backup-simplify]: Simplify 0 into 0
14.354 * [backup-simplify]: Simplify 0 into 0
14.355 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 (- a)))) 2)) (* -1 (pow (* (/ 1 (/ 1 (- b))) 1) 2))) into (- (pow a 2) (pow b 2))
14.355 * * * [progress]: simplifying candidates
14.355 * [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))
14.356 * * [simplify]: iteration 0: 38 enodes
14.376 * * [simplify]: iteration 1: 101 enodes
14.449 * * [simplify]: iteration 2: 298 enodes
14.745 * * [simplify]: iteration 3: 1335 enodes
15.815 * * [simplify]: iteration complete: 5004 enodes
15.815 * * [simplify]: Extracting #0: cost 17 inf + 0
15.816 * * [simplify]: Extracting #1: cost 344 inf + 1
15.829 * * [simplify]: Extracting #2: cost 1280 inf + 11734
15.886 * * [simplify]: Extracting #3: cost 855 inf + 140389
16.024 * * [simplify]: Extracting #4: cost 122 inf + 319029
16.165 * * [simplify]: Extracting #5: cost 26 inf + 341771
16.303 * * [simplify]: Extracting #6: cost 3 inf + 348673
16.436 * * [simplify]: Extracting #7: cost 0 inf + 350561
16.573 * [simplify]: Simplified to:
  (* (- a b) (+ a b))
  0
  (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 (* b b) (* a a) (fma (* a a) (* a a) (* (* b b) (* b b))))
  (- (* b b))
  (- (* (* a a) (* a a)) (* (* b b) (* 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))
16.575 * * * [progress]: adding candidates to table
16.723 * * [progress]: iteration 2 / 4
16.723 * * * [progress]: picking best candidate
16.729 * * * * [pick]: Picked  #<alt (λ (a b) (* (- a b) (+ a b)))>
16.729 * * * [progress]: localizing error
16.744 * * * [progress]: generating rewritten candidates
16.744 * * * [progress]: generating series expansions
16.745 * * * [progress]: simplifying candidates
16.745 * [simplify]: Simplifying:
  
16.745 * * [simplify]: iteration 0: 0 enodes
16.745 * * [simplify]: iteration complete: 0 enodes
16.745 * * [simplify]: Extracting #0: cost 0 inf + 0
16.745 * [simplify]: Simplified to:
  
16.745 * * * [progress]: adding candidates to table
16.746 * [progress]: [Phase 3 of 3] Extracting.
16.752 * [simplify]: Simplifying:
  (* (- a b) (+ a b))
16.752 * * [simplify]: iteration 0: 5 enodes
16.753 * * [simplify]: iteration 1: 7 enodes
16.753 * * [simplify]: iteration complete: 7 enodes
16.753 * * [simplify]: Extracting #0: cost 1 inf + 0
16.753 * * [simplify]: Extracting #1: cost 3 inf + 0
16.753 * * [simplify]: Extracting #2: cost 5 inf + 0
16.753 * * [simplify]: Extracting #3: cost 2 inf + 44
16.754 * * [simplify]: Extracting #4: cost 0 inf + 208
16.754 * [simplify]: Simplified to:
  (* (- a b) (+ a b))
18.461 * [regime-testing]: Baseline error score: 0.0005000625078134767
18.477 * [regime-testing]: Oracle error score: 0.0005000625078134767
18.477 * [regime-testing]: End program error score: 0.0005000625078134767
18.637 * [regime-testing]: Target error score: 0.0005000625078134767