58.196 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.034 * * * [progress]: [2/2] Setting up program.
0.038 * [progress]: [Phase 2 of 3] Improving.
0.039 * [simplify]: Simplifying:
  (- (* a a) (* b b))
0.039 * * [simplify]: iteration 0: 5 enodes
0.041 * * [simplify]: iteration 1: 11 enodes
0.045 * * [simplify]: iteration 2: 18 enodes
0.052 * * [simplify]: iteration 3: 35 enodes
0.067 * * [simplify]: iteration 4: 66 enodes
0.120 * * [simplify]: iteration 5: 159 enodes
0.212 * * [simplify]: iteration 6: 283 enodes
0.439 * * [simplify]: iteration 7: 511 enodes
1.515 * * [simplify]: iteration 8: 1410 enodes
12.669 * * [simplify]: iteration 9: 4751 enodes
19.925 * * [simplify]: iteration complete: 5000 enodes
19.925 * * [simplify]: Extracting #0: cost 1 inf + 0
19.927 * * [simplify]: Extracting #1: cost 251 inf + 0
19.934 * * [simplify]: Extracting #2: cost 704 inf + 1021
19.957 * * [simplify]: Extracting #3: cost 448 inf + 41004
20.034 * * [simplify]: Extracting #4: cost 54 inf + 129000
20.128 * * [simplify]: Extracting #5: cost 0 inf + 142253
20.222 * [simplify]: Simplified to:
  (- (* a a) (* b b))
20.223 * * [progress]: iteration 1 / 4
20.223 * * * [progress]: picking best candidate
20.232 * * * * [pick]: Picked  #<alt (λ (a b) (- (* a a) (* b b)))>
20.233 * * * [progress]: localizing error
20.248 * * * [progress]: generating rewritten candidates
20.248 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
20.268 * * * [progress]: generating series expansions
20.268 * * * * [progress]: [ 1 / 1 ] generating series at (2)
20.268 * [backup-simplify]: Simplify (- (* a a) (* b b)) into (- (pow a 2) (pow b 2))
20.268 * [approximate]: Taking taylor expansion of (- (pow a 2) (pow b 2)) in (a b) around 0
20.268 * [taylor]: Taking taylor expansion of (- (pow a 2) (pow b 2)) in b
20.268 * [taylor]: Taking taylor expansion of (pow a 2) in b
20.269 * [taylor]: Taking taylor expansion of a in b
20.269 * [backup-simplify]: Simplify a into a
20.269 * [taylor]: Taking taylor expansion of (pow b 2) in b
20.269 * [taylor]: Taking taylor expansion of b in b
20.269 * [backup-simplify]: Simplify 0 into 0
20.269 * [backup-simplify]: Simplify 1 into 1
20.269 * [taylor]: Taking taylor expansion of (- (pow a 2) (pow b 2)) in a
20.269 * [taylor]: Taking taylor expansion of (pow a 2) in a
20.269 * [taylor]: Taking taylor expansion of a in a
20.269 * [backup-simplify]: Simplify 0 into 0
20.269 * [backup-simplify]: Simplify 1 into 1
20.269 * [taylor]: Taking taylor expansion of (pow b 2) in a
20.269 * [taylor]: Taking taylor expansion of b in a
20.269 * [backup-simplify]: Simplify b into b
20.269 * [taylor]: Taking taylor expansion of (- (pow a 2) (pow b 2)) in a
20.269 * [taylor]: Taking taylor expansion of (pow a 2) in a
20.269 * [taylor]: Taking taylor expansion of a in a
20.269 * [backup-simplify]: Simplify 0 into 0
20.269 * [backup-simplify]: Simplify 1 into 1
20.269 * [taylor]: Taking taylor expansion of (pow b 2) in a
20.269 * [taylor]: Taking taylor expansion of b in a
20.269 * [backup-simplify]: Simplify b into b
20.270 * [backup-simplify]: Simplify (* b b) into (pow b 2)
20.270 * [backup-simplify]: Simplify (- (pow b 2)) into (- (pow b 2))
20.270 * [backup-simplify]: Simplify (+ 0 (- (pow b 2))) into (- (pow b 2))
20.270 * [taylor]: Taking taylor expansion of (- (pow b 2)) in b
20.270 * [taylor]: Taking taylor expansion of (pow b 2) in b
20.270 * [taylor]: Taking taylor expansion of b in b
20.270 * [backup-simplify]: Simplify 0 into 0
20.270 * [backup-simplify]: Simplify 1 into 1
20.271 * [backup-simplify]: Simplify (+ (* b 0) (* 0 b)) into 0
20.272 * [backup-simplify]: Simplify (- 0) into 0
20.272 * [backup-simplify]: Simplify (+ 0 0) into 0
20.272 * [taylor]: Taking taylor expansion of 0 in b
20.272 * [backup-simplify]: Simplify 0 into 0
20.272 * [backup-simplify]: Simplify 0 into 0
20.273 * [backup-simplify]: Simplify (* 1 1) into 1
20.273 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (* 0 b))) into 0
20.273 * [backup-simplify]: Simplify (- 0) into 0
20.274 * [backup-simplify]: Simplify (+ 1 0) into 1
20.274 * [taylor]: Taking taylor expansion of 1 in b
20.274 * [backup-simplify]: Simplify 1 into 1
20.274 * [backup-simplify]: Simplify 1 into 1
20.274 * [backup-simplify]: Simplify 0 into 0
20.274 * [backup-simplify]: Simplify (* 1 1) into 1
20.275 * [backup-simplify]: Simplify (- 1) into -1
20.275 * [backup-simplify]: Simplify -1 into -1
20.276 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
20.276 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (+ (* 0 0) (* 0 b)))) into 0
20.277 * [backup-simplify]: Simplify (- 0) into 0
20.277 * [backup-simplify]: Simplify (+ 0 0) into 0
20.277 * [taylor]: Taking taylor expansion of 0 in b
20.277 * [backup-simplify]: Simplify 0 into 0
20.277 * [backup-simplify]: Simplify 0 into 0
20.277 * [backup-simplify]: Simplify 0 into 0
20.277 * [backup-simplify]: Simplify 0 into 0
20.278 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
20.279 * [backup-simplify]: Simplify (- 0) into 0
20.279 * [backup-simplify]: Simplify 0 into 0
20.280 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
20.281 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 b))))) into 0
20.282 * [backup-simplify]: Simplify (- 0) into 0
20.282 * [backup-simplify]: Simplify (+ 0 0) into 0
20.282 * [taylor]: Taking taylor expansion of 0 in b
20.282 * [backup-simplify]: Simplify 0 into 0
20.283 * [backup-simplify]: Simplify 0 into 0
20.283 * [backup-simplify]: Simplify 0 into 0
20.283 * [backup-simplify]: Simplify (+ (* -1 (pow (* b 1) 2)) (* 1 (pow (* 1 a) 2))) into (- (pow a 2) (pow b 2))
20.284 * [backup-simplify]: Simplify (- (* (/ 1 a) (/ 1 a)) (* (/ 1 b) (/ 1 b))) into (- (/ 1 (pow a 2)) (/ 1 (pow b 2)))
20.284 * [approximate]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in (a b) around 0
20.284 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in b
20.284 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in b
20.284 * [taylor]: Taking taylor expansion of (pow a 2) in b
20.284 * [taylor]: Taking taylor expansion of a in b
20.284 * [backup-simplify]: Simplify a into a
20.284 * [backup-simplify]: Simplify (* a a) into (pow a 2)
20.284 * [backup-simplify]: Simplify (/ 1 (pow a 2)) into (/ 1 (pow a 2))
20.284 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in b
20.284 * [taylor]: Taking taylor expansion of (pow b 2) in b
20.284 * [taylor]: Taking taylor expansion of b in b
20.284 * [backup-simplify]: Simplify 0 into 0
20.284 * [backup-simplify]: Simplify 1 into 1
20.285 * [backup-simplify]: Simplify (* 1 1) into 1
20.286 * [backup-simplify]: Simplify (/ 1 1) into 1
20.286 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in a
20.286 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in a
20.286 * [taylor]: Taking taylor expansion of (pow a 2) in a
20.286 * [taylor]: Taking taylor expansion of a in a
20.286 * [backup-simplify]: Simplify 0 into 0
20.286 * [backup-simplify]: Simplify 1 into 1
20.287 * [backup-simplify]: Simplify (* 1 1) into 1
20.287 * [backup-simplify]: Simplify (/ 1 1) into 1
20.287 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in a
20.287 * [taylor]: Taking taylor expansion of (pow b 2) in a
20.287 * [taylor]: Taking taylor expansion of b in a
20.287 * [backup-simplify]: Simplify b into b
20.287 * [backup-simplify]: Simplify (* b b) into (pow b 2)
20.288 * [backup-simplify]: Simplify (/ 1 (pow b 2)) into (/ 1 (pow b 2))
20.288 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in a
20.288 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in a
20.288 * [taylor]: Taking taylor expansion of (pow a 2) in a
20.288 * [taylor]: Taking taylor expansion of a in a
20.288 * [backup-simplify]: Simplify 0 into 0
20.288 * [backup-simplify]: Simplify 1 into 1
20.288 * [backup-simplify]: Simplify (* 1 1) into 1
20.288 * [backup-simplify]: Simplify (/ 1 1) into 1
20.288 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in a
20.289 * [taylor]: Taking taylor expansion of (pow b 2) in a
20.289 * [taylor]: Taking taylor expansion of b in a
20.289 * [backup-simplify]: Simplify b into b
20.289 * [backup-simplify]: Simplify (* b b) into (pow b 2)
20.289 * [backup-simplify]: Simplify (/ 1 (pow b 2)) into (/ 1 (pow b 2))
20.290 * [backup-simplify]: Simplify (+ 1 0) into 1
20.290 * [taylor]: Taking taylor expansion of 1 in b
20.290 * [backup-simplify]: Simplify 1 into 1
20.290 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
20.291 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
20.292 * [backup-simplify]: Simplify (+ 0 0) into 0
20.292 * [taylor]: Taking taylor expansion of 0 in b
20.292 * [backup-simplify]: Simplify 0 into 0
20.292 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
20.293 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
20.294 * [backup-simplify]: Simplify (- (/ 1 (pow b 2))) into (- (/ 1 (pow b 2)))
20.294 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow b 2)))) into (- (/ 1 (pow b 2)))
20.294 * [taylor]: Taking taylor expansion of (- (/ 1 (pow b 2))) in b
20.294 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in b
20.294 * [taylor]: Taking taylor expansion of (pow b 2) in b
20.294 * [taylor]: Taking taylor expansion of b in b
20.294 * [backup-simplify]: Simplify 0 into 0
20.294 * [backup-simplify]: Simplify 1 into 1
20.295 * [backup-simplify]: Simplify (* 1 1) into 1
20.295 * [backup-simplify]: Simplify (/ 1 1) into 1
20.295 * [backup-simplify]: Simplify (- 1) into -1
20.295 * [backup-simplify]: Simplify -1 into -1
20.295 * [backup-simplify]: Simplify 1 into 1
20.296 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
20.298 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
20.298 * [backup-simplify]: Simplify (+ (* b 0) (* 0 b)) into 0
20.298 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow b 2)) (/ 0 (pow b 2))))) into 0
20.299 * [backup-simplify]: Simplify (- 0) into 0
20.301 * [backup-simplify]: Simplify (+ 0 0) into 0
20.301 * [taylor]: Taking taylor expansion of 0 in b
20.301 * [backup-simplify]: Simplify 0 into 0
20.302 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
20.303 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
20.303 * [backup-simplify]: Simplify (- 0) into 0
20.303 * [backup-simplify]: Simplify 0 into 0
20.303 * [backup-simplify]: Simplify 0 into 0
20.303 * [backup-simplify]: Simplify 0 into 0
20.304 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
20.305 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
20.305 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (* 0 b))) into 0
20.306 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow b 2)) (/ 0 (pow b 2))) (* 0 (/ 0 (pow b 2))))) into 0
20.306 * [backup-simplify]: Simplify (- 0) into 0
20.306 * [backup-simplify]: Simplify (+ 0 0) into 0
20.306 * [taylor]: Taking taylor expansion of 0 in b
20.306 * [backup-simplify]: Simplify 0 into 0
20.307 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
20.308 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
20.309 * [backup-simplify]: Simplify (- 0) into 0
20.309 * [backup-simplify]: Simplify 0 into 0
20.309 * [backup-simplify]: Simplify 0 into 0
20.309 * [backup-simplify]: Simplify 0 into 0
20.310 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 a))) 2)) (* -1 (pow (* (/ 1 (/ 1 b)) 1) 2))) into (- (pow a 2) (pow b 2))
20.311 * [backup-simplify]: Simplify (- (* (/ 1 (- a)) (/ 1 (- a))) (* (/ 1 (- b)) (/ 1 (- b)))) into (- (/ 1 (pow a 2)) (/ 1 (pow b 2)))
20.311 * [approximate]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in (a b) around 0
20.311 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in b
20.311 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in b
20.311 * [taylor]: Taking taylor expansion of (pow a 2) in b
20.311 * [taylor]: Taking taylor expansion of a in b
20.311 * [backup-simplify]: Simplify a into a
20.311 * [backup-simplify]: Simplify (* a a) into (pow a 2)
20.311 * [backup-simplify]: Simplify (/ 1 (pow a 2)) into (/ 1 (pow a 2))
20.311 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in b
20.311 * [taylor]: Taking taylor expansion of (pow b 2) in b
20.311 * [taylor]: Taking taylor expansion of b in b
20.311 * [backup-simplify]: Simplify 0 into 0
20.311 * [backup-simplify]: Simplify 1 into 1
20.312 * [backup-simplify]: Simplify (* 1 1) into 1
20.312 * [backup-simplify]: Simplify (/ 1 1) into 1
20.313 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in a
20.313 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in a
20.313 * [taylor]: Taking taylor expansion of (pow a 2) in a
20.313 * [taylor]: Taking taylor expansion of a in a
20.313 * [backup-simplify]: Simplify 0 into 0
20.313 * [backup-simplify]: Simplify 1 into 1
20.313 * [backup-simplify]: Simplify (* 1 1) into 1
20.314 * [backup-simplify]: Simplify (/ 1 1) into 1
20.314 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in a
20.314 * [taylor]: Taking taylor expansion of (pow b 2) in a
20.314 * [taylor]: Taking taylor expansion of b in a
20.314 * [backup-simplify]: Simplify b into b
20.314 * [backup-simplify]: Simplify (* b b) into (pow b 2)
20.314 * [backup-simplify]: Simplify (/ 1 (pow b 2)) into (/ 1 (pow b 2))
20.314 * [taylor]: Taking taylor expansion of (- (/ 1 (pow a 2)) (/ 1 (pow b 2))) in a
20.314 * [taylor]: Taking taylor expansion of (/ 1 (pow a 2)) in a
20.314 * [taylor]: Taking taylor expansion of (pow a 2) in a
20.314 * [taylor]: Taking taylor expansion of a in a
20.314 * [backup-simplify]: Simplify 0 into 0
20.314 * [backup-simplify]: Simplify 1 into 1
20.315 * [backup-simplify]: Simplify (* 1 1) into 1
20.315 * [backup-simplify]: Simplify (/ 1 1) into 1
20.315 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in a
20.315 * [taylor]: Taking taylor expansion of (pow b 2) in a
20.315 * [taylor]: Taking taylor expansion of b in a
20.315 * [backup-simplify]: Simplify b into b
20.315 * [backup-simplify]: Simplify (* b b) into (pow b 2)
20.315 * [backup-simplify]: Simplify (/ 1 (pow b 2)) into (/ 1 (pow b 2))
20.316 * [backup-simplify]: Simplify (+ 1 0) into 1
20.316 * [taylor]: Taking taylor expansion of 1 in b
20.316 * [backup-simplify]: Simplify 1 into 1
20.316 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
20.317 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
20.317 * [backup-simplify]: Simplify (+ 0 0) into 0
20.317 * [taylor]: Taking taylor expansion of 0 in b
20.317 * [backup-simplify]: Simplify 0 into 0
20.318 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
20.319 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
20.319 * [backup-simplify]: Simplify (- (/ 1 (pow b 2))) into (- (/ 1 (pow b 2)))
20.319 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow b 2)))) into (- (/ 1 (pow b 2)))
20.319 * [taylor]: Taking taylor expansion of (- (/ 1 (pow b 2))) in b
20.319 * [taylor]: Taking taylor expansion of (/ 1 (pow b 2)) in b
20.319 * [taylor]: Taking taylor expansion of (pow b 2) in b
20.319 * [taylor]: Taking taylor expansion of b in b
20.319 * [backup-simplify]: Simplify 0 into 0
20.319 * [backup-simplify]: Simplify 1 into 1
20.319 * [backup-simplify]: Simplify (* 1 1) into 1
20.320 * [backup-simplify]: Simplify (/ 1 1) into 1
20.320 * [backup-simplify]: Simplify (- 1) into -1
20.320 * [backup-simplify]: Simplify -1 into -1
20.320 * [backup-simplify]: Simplify 1 into 1
20.321 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
20.321 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
20.322 * [backup-simplify]: Simplify (+ (* b 0) (* 0 b)) into 0
20.322 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow b 2)) (/ 0 (pow b 2))))) into 0
20.322 * [backup-simplify]: Simplify (- 0) into 0
20.322 * [backup-simplify]: Simplify (+ 0 0) into 0
20.322 * [taylor]: Taking taylor expansion of 0 in b
20.322 * [backup-simplify]: Simplify 0 into 0
20.323 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
20.323 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
20.324 * [backup-simplify]: Simplify (- 0) into 0
20.324 * [backup-simplify]: Simplify 0 into 0
20.324 * [backup-simplify]: Simplify 0 into 0
20.324 * [backup-simplify]: Simplify 0 into 0
20.325 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
20.326 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
20.327 * [backup-simplify]: Simplify (+ (* b 0) (+ (* 0 0) (* 0 b))) into 0
20.327 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow b 2)) (/ 0 (pow b 2))) (* 0 (/ 0 (pow b 2))))) into 0
20.328 * [backup-simplify]: Simplify (- 0) into 0
20.328 * [backup-simplify]: Simplify (+ 0 0) into 0
20.328 * [taylor]: Taking taylor expansion of 0 in b
20.328 * [backup-simplify]: Simplify 0 into 0
20.330 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
20.332 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
20.333 * [backup-simplify]: Simplify (- 0) into 0
20.333 * [backup-simplify]: Simplify 0 into 0
20.333 * [backup-simplify]: Simplify 0 into 0
20.333 * [backup-simplify]: Simplify 0 into 0
20.334 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 (- a)))) 2)) (* -1 (pow (* (/ 1 (/ 1 (- b))) 1) 2))) into (- (pow a 2) (pow b 2))
20.334 * * * [progress]: simplifying candidates
20.335 * [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))
20.336 * * [simplify]: iteration 0: 38 enodes
20.352 * * [simplify]: iteration 1: 101 enodes
20.448 * * [simplify]: iteration 2: 298 enodes
20.771 * * [simplify]: iteration 3: 1335 enodes
21.936 * * [simplify]: iteration complete: 5004 enodes
21.936 * * [simplify]: Extracting #0: cost 17 inf + 0
21.938 * * [simplify]: Extracting #1: cost 344 inf + 1
21.949 * * [simplify]: Extracting #2: cost 1280 inf + 11734
22.018 * * [simplify]: Extracting #3: cost 855 inf + 140389
22.130 * * [simplify]: Extracting #4: cost 122 inf + 319029
22.266 * * [simplify]: Extracting #5: cost 26 inf + 341771
22.403 * * [simplify]: Extracting #6: cost 3 inf + 348673
22.542 * * [simplify]: Extracting #7: cost 0 inf + 350561
22.679 * [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))
22.680 * * * [progress]: adding candidates to table
22.812 * * [progress]: iteration 2 / 4
22.812 * * * [progress]: picking best candidate
22.818 * * * * [pick]: Picked  #<alt (λ (a b) (* (- a b) (+ a b)))>
22.818 * * * [progress]: localizing error
22.833 * * * [progress]: generating rewritten candidates
22.833 * * * [progress]: generating series expansions
22.833 * * * [progress]: simplifying candidates
22.833 * [simplify]: Simplifying:
  
22.833 * * [simplify]: iteration 0: 0 enodes
22.833 * * [simplify]: iteration complete: 0 enodes
22.833 * * [simplify]: Extracting #0: cost 0 inf + 0
22.833 * [simplify]: Simplified to:
  
22.833 * * * [progress]: adding candidates to table
22.834 * [progress]: [Phase 3 of 3] Extracting.
22.841 * [simplify]: Simplifying:
  (* (- a b) (+ a b))
22.841 * * [simplify]: iteration 0: 5 enodes
22.842 * * [simplify]: iteration 1: 7 enodes
22.842 * * [simplify]: iteration complete: 7 enodes
22.842 * * [simplify]: Extracting #0: cost 1 inf + 0
22.842 * * [simplify]: Extracting #1: cost 3 inf + 0
22.842 * * [simplify]: Extracting #2: cost 5 inf + 0
22.842 * * [simplify]: Extracting #3: cost 2 inf + 44
22.843 * * [simplify]: Extracting #4: cost 0 inf + 208
22.843 * [simplify]: Simplified to:
  (* (- a b) (+ a b))
24.743 * [regime-testing]: Baseline error score: 0.0005000625078134767
24.761 * [regime-testing]: Oracle error score: 0.0005000625078134767
24.764 * [regime-testing]: End program error score: 0.0005000625078134767
25.146 * [regime-testing]: Target error score: 0.0005000625078134767