6.927 * [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:
  (- (+ x y) (* x y))
0.023 * * [simplify]: iteration 0: 5 enodes
0.024 * * [simplify]: iteration 1: 11 enodes
0.027 * * [simplify]: iteration 2: 25 enodes
0.034 * * [simplify]: iteration 3: 37 enodes
0.041 * * [simplify]: iteration 4: 44 enodes
0.050 * * [simplify]: iteration 5: 60 enodes
0.064 * * [simplify]: iteration 6: 115 enodes
0.090 * * [simplify]: iteration 7: 225 enodes
0.154 * * [simplify]: iteration 8: 428 enodes
0.297 * * [simplify]: iteration 9: 817 enodes
0.582 * * [simplify]: iteration 10: 1170 enodes
1.137 * * [simplify]: iteration 11: 1715 enodes
2.288 * * [simplify]: iteration 12: 2411 enodes
4.052 * * [simplify]: iteration 13: 3231 enodes
5.777 * * [simplify]: iteration complete: 5000 enodes
5.777 * * [simplify]: Extracting #0: cost 1 inf + 0
5.778 * * [simplify]: Extracting #1: cost 480 inf + 0
5.781 * * [simplify]: Extracting #2: cost 504 inf + 5126
5.789 * * [simplify]: Extracting #3: cost 200 inf + 37625
5.805 * * [simplify]: Extracting #4: cost 3 inf + 57656
6.120 * * [simplify]: Extracting #5: cost 0 inf + 58063
6.147 * * [simplify]: Extracting #6: cost 0 inf + 58023
6.178 * [simplify]: Simplified to:
  (- (+ x y) (* y x))
6.179 * * [progress]: iteration 1 / 4
6.179 * * * [progress]: picking best candidate
6.184 * * * * [pick]: Picked  #<alt (λ (x y) (- (+ x y) (* x y)))>
6.184 * * * [progress]: localizing error
6.196 * * * [progress]: generating rewritten candidates
6.196 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
6.249 * * * [progress]: generating series expansions
6.249 * * * * [progress]: [ 1 / 1 ] generating series at (2)
6.250 * [backup-simplify]: Simplify (- (+ x y) (* x y)) into (- (+ x y) (* x y))
6.250 * [approximate]: Taking taylor expansion of (- (+ x y) (* x y)) in (x y) around 0
6.250 * [taylor]: Taking taylor expansion of (- (+ x y) (* x y)) in y
6.250 * [taylor]: Taking taylor expansion of (+ x y) in y
6.250 * [taylor]: Taking taylor expansion of x in y
6.250 * [backup-simplify]: Simplify x into x
6.250 * [taylor]: Taking taylor expansion of y in y
6.250 * [backup-simplify]: Simplify 0 into 0
6.250 * [backup-simplify]: Simplify 1 into 1
6.250 * [taylor]: Taking taylor expansion of (* x y) in y
6.250 * [taylor]: Taking taylor expansion of x in y
6.250 * [backup-simplify]: Simplify x into x
6.250 * [taylor]: Taking taylor expansion of y in y
6.250 * [backup-simplify]: Simplify 0 into 0
6.250 * [backup-simplify]: Simplify 1 into 1
6.250 * [taylor]: Taking taylor expansion of (- (+ x y) (* x y)) in x
6.250 * [taylor]: Taking taylor expansion of (+ x y) in x
6.250 * [taylor]: Taking taylor expansion of x in x
6.250 * [backup-simplify]: Simplify 0 into 0
6.250 * [backup-simplify]: Simplify 1 into 1
6.250 * [taylor]: Taking taylor expansion of y in x
6.250 * [backup-simplify]: Simplify y into y
6.250 * [taylor]: Taking taylor expansion of (* x y) in x
6.250 * [taylor]: Taking taylor expansion of x in x
6.250 * [backup-simplify]: Simplify 0 into 0
6.250 * [backup-simplify]: Simplify 1 into 1
6.250 * [taylor]: Taking taylor expansion of y in x
6.250 * [backup-simplify]: Simplify y into y
6.250 * [taylor]: Taking taylor expansion of (- (+ x y) (* x y)) in x
6.250 * [taylor]: Taking taylor expansion of (+ x y) in x
6.250 * [taylor]: Taking taylor expansion of x in x
6.250 * [backup-simplify]: Simplify 0 into 0
6.250 * [backup-simplify]: Simplify 1 into 1
6.250 * [taylor]: Taking taylor expansion of y in x
6.250 * [backup-simplify]: Simplify y into y
6.250 * [taylor]: Taking taylor expansion of (* x y) in x
6.250 * [taylor]: Taking taylor expansion of x in x
6.250 * [backup-simplify]: Simplify 0 into 0
6.251 * [backup-simplify]: Simplify 1 into 1
6.251 * [taylor]: Taking taylor expansion of y in x
6.251 * [backup-simplify]: Simplify y into y
6.251 * [backup-simplify]: Simplify (+ 0 y) into y
6.251 * [backup-simplify]: Simplify (* 0 y) into 0
6.251 * [backup-simplify]: Simplify (- 0) into 0
6.251 * [backup-simplify]: Simplify (+ y 0) into y
6.251 * [taylor]: Taking taylor expansion of y in y
6.251 * [backup-simplify]: Simplify 0 into 0
6.251 * [backup-simplify]: Simplify 1 into 1
6.252 * [backup-simplify]: Simplify 0 into 0
6.252 * [backup-simplify]: Simplify (+ 1 0) into 1
6.252 * [backup-simplify]: Simplify (+ (* 0 0) (* 1 y)) into y
6.252 * [backup-simplify]: Simplify (- y) into (- y)
6.252 * [backup-simplify]: Simplify (+ 1 (- y)) into (- 1 y)
6.252 * [taylor]: Taking taylor expansion of (- 1 y) in y
6.252 * [taylor]: Taking taylor expansion of 1 in y
6.252 * [backup-simplify]: Simplify 1 into 1
6.252 * [taylor]: Taking taylor expansion of y in y
6.253 * [backup-simplify]: Simplify 0 into 0
6.253 * [backup-simplify]: Simplify 1 into 1
6.253 * [backup-simplify]: Simplify (- 0) into 0
6.253 * [backup-simplify]: Simplify (+ 1 0) into 1
6.253 * [backup-simplify]: Simplify 1 into 1
6.253 * [backup-simplify]: Simplify 1 into 1
6.254 * [backup-simplify]: Simplify (+ 0 0) into 0
6.254 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 0) (* 0 y))) into 0
6.255 * [backup-simplify]: Simplify (- 0) into 0
6.255 * [backup-simplify]: Simplify (+ 0 0) into 0
6.255 * [taylor]: Taking taylor expansion of 0 in y
6.255 * [backup-simplify]: Simplify 0 into 0
6.255 * [backup-simplify]: Simplify 0 into 0
6.256 * [backup-simplify]: Simplify (- 1) into -1
6.256 * [backup-simplify]: Simplify (+ 0 -1) into -1
6.256 * [backup-simplify]: Simplify -1 into -1
6.256 * [backup-simplify]: Simplify (+ (* -1 (* y x)) (+ (* 1 (* y 1)) (* 1 (* 1 x)))) into (- (+ x y) (* x y))
6.256 * [backup-simplify]: Simplify (- (+ (/ 1 x) (/ 1 y)) (* (/ 1 x) (/ 1 y))) into (- (+ (/ 1 x) (/ 1 y)) (/ 1 (* x y)))
6.256 * [approximate]: Taking taylor expansion of (- (+ (/ 1 x) (/ 1 y)) (/ 1 (* x y))) in (x y) around 0
6.256 * [taylor]: Taking taylor expansion of (- (+ (/ 1 x) (/ 1 y)) (/ 1 (* x y))) in y
6.257 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in y
6.257 * [taylor]: Taking taylor expansion of (/ 1 x) in y
6.257 * [taylor]: Taking taylor expansion of x in y
6.257 * [backup-simplify]: Simplify x into x
6.257 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
6.257 * [taylor]: Taking taylor expansion of (/ 1 y) in y
6.257 * [taylor]: Taking taylor expansion of y in y
6.257 * [backup-simplify]: Simplify 0 into 0
6.257 * [backup-simplify]: Simplify 1 into 1
6.257 * [backup-simplify]: Simplify (/ 1 1) into 1
6.257 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in y
6.257 * [taylor]: Taking taylor expansion of (* x y) in y
6.257 * [taylor]: Taking taylor expansion of x in y
6.257 * [backup-simplify]: Simplify x into x
6.257 * [taylor]: Taking taylor expansion of y in y
6.257 * [backup-simplify]: Simplify 0 into 0
6.257 * [backup-simplify]: Simplify 1 into 1
6.257 * [backup-simplify]: Simplify (* x 0) into 0
6.258 * [backup-simplify]: Simplify (+ (* x 1) (* 0 0)) into x
6.258 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
6.258 * [taylor]: Taking taylor expansion of (- (+ (/ 1 x) (/ 1 y)) (/ 1 (* x y))) in x
6.258 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in x
6.258 * [taylor]: Taking taylor expansion of (/ 1 x) in x
6.258 * [taylor]: Taking taylor expansion of x in x
6.258 * [backup-simplify]: Simplify 0 into 0
6.258 * [backup-simplify]: Simplify 1 into 1
6.258 * [backup-simplify]: Simplify (/ 1 1) into 1
6.258 * [taylor]: Taking taylor expansion of (/ 1 y) in x
6.258 * [taylor]: Taking taylor expansion of y in x
6.258 * [backup-simplify]: Simplify y into y
6.258 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.258 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
6.258 * [taylor]: Taking taylor expansion of (* x y) in x
6.258 * [taylor]: Taking taylor expansion of x in x
6.258 * [backup-simplify]: Simplify 0 into 0
6.258 * [backup-simplify]: Simplify 1 into 1
6.258 * [taylor]: Taking taylor expansion of y in x
6.258 * [backup-simplify]: Simplify y into y
6.259 * [backup-simplify]: Simplify (* 0 y) into 0
6.259 * [backup-simplify]: Simplify (+ (* 0 0) (* 1 y)) into y
6.259 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.259 * [taylor]: Taking taylor expansion of (- (+ (/ 1 x) (/ 1 y)) (/ 1 (* x y))) in x
6.259 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in x
6.259 * [taylor]: Taking taylor expansion of (/ 1 x) in x
6.259 * [taylor]: Taking taylor expansion of x in x
6.259 * [backup-simplify]: Simplify 0 into 0
6.259 * [backup-simplify]: Simplify 1 into 1
6.259 * [backup-simplify]: Simplify (/ 1 1) into 1
6.260 * [taylor]: Taking taylor expansion of (/ 1 y) in x
6.260 * [taylor]: Taking taylor expansion of y in x
6.260 * [backup-simplify]: Simplify y into y
6.260 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.260 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
6.260 * [taylor]: Taking taylor expansion of (* x y) in x
6.260 * [taylor]: Taking taylor expansion of x in x
6.260 * [backup-simplify]: Simplify 0 into 0
6.260 * [backup-simplify]: Simplify 1 into 1
6.260 * [taylor]: Taking taylor expansion of y in x
6.260 * [backup-simplify]: Simplify y into y
6.260 * [backup-simplify]: Simplify (* 0 y) into 0
6.260 * [backup-simplify]: Simplify (+ (* 0 0) (* 1 y)) into y
6.260 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.261 * [backup-simplify]: Simplify (+ 1 0) into 1
6.261 * [backup-simplify]: Simplify (- (/ 1 y)) into (- (/ 1 y))
6.261 * [backup-simplify]: Simplify (+ 1 (- (/ 1 y))) into (- 1 (/ 1 y))
6.261 * [taylor]: Taking taylor expansion of (- 1 (/ 1 y)) in y
6.261 * [taylor]: Taking taylor expansion of 1 in y
6.261 * [backup-simplify]: Simplify 1 into 1
6.261 * [taylor]: Taking taylor expansion of (/ 1 y) in y
6.261 * [taylor]: Taking taylor expansion of y in y
6.261 * [backup-simplify]: Simplify 0 into 0
6.261 * [backup-simplify]: Simplify 1 into 1
6.261 * [backup-simplify]: Simplify (/ 1 1) into 1
6.262 * [backup-simplify]: Simplify (- 1) into -1
6.262 * [backup-simplify]: Simplify (+ 0 -1) into -1
6.262 * [backup-simplify]: Simplify -1 into -1
6.263 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
6.263 * [backup-simplify]: Simplify (+ 0 (/ 1 y)) into (/ 1 y)
6.264 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 0) (* 0 y))) into 0
6.264 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
6.264 * [backup-simplify]: Simplify (- 0) into 0
6.264 * [backup-simplify]: Simplify (+ (/ 1 y) 0) into (/ 1 y)
6.264 * [taylor]: Taking taylor expansion of (/ 1 y) in y
6.264 * [taylor]: Taking taylor expansion of y in y
6.264 * [backup-simplify]: Simplify 0 into 0
6.264 * [backup-simplify]: Simplify 1 into 1
6.265 * [backup-simplify]: Simplify (/ 1 1) into 1
6.265 * [backup-simplify]: Simplify 1 into 1
6.266 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
6.266 * [backup-simplify]: Simplify (- 0) into 0
6.266 * [backup-simplify]: Simplify (+ 1 0) into 1
6.266 * [backup-simplify]: Simplify 1 into 1
6.267 * [backup-simplify]: Simplify (+ (* 1 (* 1 (/ 1 (/ 1 x)))) (+ (* 1 (* (/ 1 (/ 1 y)) 1)) (* -1 (* (/ 1 (/ 1 y)) (/ 1 (/ 1 x)))))) into (- (+ x y) (* x y))
6.267 * [backup-simplify]: Simplify (- (+ (/ 1 (- x)) (/ 1 (- y))) (* (/ 1 (- x)) (/ 1 (- y)))) into (- (+ (/ 1 (* x y)) (+ (/ 1 x) (/ 1 y))))
6.267 * [approximate]: Taking taylor expansion of (- (+ (/ 1 (* x y)) (+ (/ 1 x) (/ 1 y)))) in (x y) around 0
6.267 * [taylor]: Taking taylor expansion of (- (+ (/ 1 (* x y)) (+ (/ 1 x) (/ 1 y)))) in y
6.267 * [taylor]: Taking taylor expansion of (+ (/ 1 (* x y)) (+ (/ 1 x) (/ 1 y))) in y
6.267 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in y
6.267 * [taylor]: Taking taylor expansion of (* x y) in y
6.267 * [taylor]: Taking taylor expansion of x in y
6.267 * [backup-simplify]: Simplify x into x
6.267 * [taylor]: Taking taylor expansion of y in y
6.267 * [backup-simplify]: Simplify 0 into 0
6.267 * [backup-simplify]: Simplify 1 into 1
6.267 * [backup-simplify]: Simplify (* x 0) into 0
6.267 * [backup-simplify]: Simplify (+ (* x 1) (* 0 0)) into x
6.268 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
6.268 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in y
6.268 * [taylor]: Taking taylor expansion of (/ 1 x) in y
6.268 * [taylor]: Taking taylor expansion of x in y
6.268 * [backup-simplify]: Simplify x into x
6.268 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
6.268 * [taylor]: Taking taylor expansion of (/ 1 y) in y
6.268 * [taylor]: Taking taylor expansion of y in y
6.268 * [backup-simplify]: Simplify 0 into 0
6.268 * [backup-simplify]: Simplify 1 into 1
6.268 * [backup-simplify]: Simplify (/ 1 1) into 1
6.268 * [taylor]: Taking taylor expansion of (- (+ (/ 1 (* x y)) (+ (/ 1 x) (/ 1 y)))) in x
6.268 * [taylor]: Taking taylor expansion of (+ (/ 1 (* x y)) (+ (/ 1 x) (/ 1 y))) in x
6.268 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
6.268 * [taylor]: Taking taylor expansion of (* x y) in x
6.268 * [taylor]: Taking taylor expansion of x in x
6.268 * [backup-simplify]: Simplify 0 into 0
6.268 * [backup-simplify]: Simplify 1 into 1
6.268 * [taylor]: Taking taylor expansion of y in x
6.268 * [backup-simplify]: Simplify y into y
6.268 * [backup-simplify]: Simplify (* 0 y) into 0
6.269 * [backup-simplify]: Simplify (+ (* 0 0) (* 1 y)) into y
6.269 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.269 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in x
6.269 * [taylor]: Taking taylor expansion of (/ 1 x) in x
6.269 * [taylor]: Taking taylor expansion of x in x
6.269 * [backup-simplify]: Simplify 0 into 0
6.269 * [backup-simplify]: Simplify 1 into 1
6.269 * [backup-simplify]: Simplify (/ 1 1) into 1
6.269 * [taylor]: Taking taylor expansion of (/ 1 y) in x
6.269 * [taylor]: Taking taylor expansion of y in x
6.269 * [backup-simplify]: Simplify y into y
6.269 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.269 * [taylor]: Taking taylor expansion of (- (+ (/ 1 (* x y)) (+ (/ 1 x) (/ 1 y)))) in x
6.270 * [taylor]: Taking taylor expansion of (+ (/ 1 (* x y)) (+ (/ 1 x) (/ 1 y))) in x
6.270 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
6.270 * [taylor]: Taking taylor expansion of (* x y) in x
6.270 * [taylor]: Taking taylor expansion of x in x
6.270 * [backup-simplify]: Simplify 0 into 0
6.270 * [backup-simplify]: Simplify 1 into 1
6.270 * [taylor]: Taking taylor expansion of y in x
6.270 * [backup-simplify]: Simplify y into y
6.270 * [backup-simplify]: Simplify (* 0 y) into 0
6.270 * [backup-simplify]: Simplify (+ (* 0 0) (* 1 y)) into y
6.270 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.270 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in x
6.270 * [taylor]: Taking taylor expansion of (/ 1 x) in x
6.270 * [taylor]: Taking taylor expansion of x in x
6.270 * [backup-simplify]: Simplify 0 into 0
6.270 * [backup-simplify]: Simplify 1 into 1
6.271 * [backup-simplify]: Simplify (/ 1 1) into 1
6.271 * [taylor]: Taking taylor expansion of (/ 1 y) in x
6.271 * [taylor]: Taking taylor expansion of y in x
6.271 * [backup-simplify]: Simplify y into y
6.271 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.271 * [backup-simplify]: Simplify (+ 1 0) into 1
6.271 * [backup-simplify]: Simplify (+ (/ 1 y) 1) into (+ 1 (/ 1 y))
6.271 * [backup-simplify]: Simplify (- (+ 1 (/ 1 y))) into (- (+ 1 (/ 1 y)))
6.271 * [taylor]: Taking taylor expansion of (- (+ 1 (/ 1 y))) in y
6.271 * [taylor]: Taking taylor expansion of (+ 1 (/ 1 y)) in y
6.271 * [taylor]: Taking taylor expansion of 1 in y
6.271 * [backup-simplify]: Simplify 1 into 1
6.271 * [taylor]: Taking taylor expansion of (/ 1 y) in y
6.271 * [taylor]: Taking taylor expansion of y in y
6.271 * [backup-simplify]: Simplify 0 into 0
6.272 * [backup-simplify]: Simplify 1 into 1
6.272 * [backup-simplify]: Simplify (/ 1 1) into 1
6.272 * [backup-simplify]: Simplify (+ 0 1) into 1
6.273 * [backup-simplify]: Simplify (- 1) into -1
6.273 * [backup-simplify]: Simplify -1 into -1
6.273 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 0) (* 0 y))) into 0
6.273 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
6.274 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
6.274 * [backup-simplify]: Simplify (+ 0 (/ 1 y)) into (/ 1 y)
6.274 * [backup-simplify]: Simplify (+ 0 (/ 1 y)) into (/ 1 y)
6.274 * [backup-simplify]: Simplify (- (/ 1 y)) into (- (/ 1 y))
6.274 * [taylor]: Taking taylor expansion of (- (/ 1 y)) in y
6.274 * [taylor]: Taking taylor expansion of (/ 1 y) in y
6.274 * [taylor]: Taking taylor expansion of y in y
6.274 * [backup-simplify]: Simplify 0 into 0
6.274 * [backup-simplify]: Simplify 1 into 1
6.275 * [backup-simplify]: Simplify (/ 1 1) into 1
6.275 * [backup-simplify]: Simplify (- 1) into -1
6.275 * [backup-simplify]: Simplify -1 into -1
6.276 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
6.276 * [backup-simplify]: Simplify (+ 1 0) into 1
6.276 * [backup-simplify]: Simplify (- 1) into -1
6.277 * [backup-simplify]: Simplify -1 into -1
6.277 * [backup-simplify]: Simplify (+ (* -1 (* 1 (/ 1 (/ 1 (- x))))) (+ (* -1 (* (/ 1 (/ 1 (- y))) 1)) (* -1 (* (/ 1 (/ 1 (- y))) (/ 1 (/ 1 (- x))))))) into (- (+ x y) (* x y))
6.277 * * * [progress]: simplifying candidates
6.277 * [simplify]: Simplifying:
  (/ (* (exp x) (exp y)) (exp (* x y)))
  (/ (exp (+ x y)) (exp (* 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)))
  (- (pow (+ x y) 3) (pow (* x y) 3))
  (+ (* (+ x y) (+ x y)) (+ (* (* x y) (* x y)) (* (+ x y) (* x y))))
  (- (* x y))
  (- (* (+ x y) (+ x y)) (* (* x y) (* x y)))
  (+ (+ x y) (* x y))
  (- y (* x y))
  (- (* x y))
  (- (+ x y) (* x y))
  (- (+ x y) (* x y))
  (- (+ x y) (* x y))
6.278 * * [simplify]: iteration 0: 32 enodes
6.288 * * [simplify]: iteration 1: 88 enodes
6.314 * * [simplify]: iteration 2: 301 enodes
6.460 * * [simplify]: iteration 3: 1192 enodes
7.156 * * [simplify]: iteration complete: 5000 enodes
7.156 * * [simplify]: Extracting #0: cost 13 inf + 0
7.158 * * [simplify]: Extracting #1: cost 501 inf + 0
7.168 * * [simplify]: Extracting #2: cost 1463 inf + 11645
7.215 * * [simplify]: Extracting #3: cost 848 inf + 178339
7.332 * * [simplify]: Extracting #4: cost 104 inf + 381527
7.446 * * [simplify]: Extracting #5: cost 31 inf + 411864
7.541 * * [simplify]: Extracting #6: cost 36 inf + 412954
7.658 * * [simplify]: Extracting #7: cost 8 inf + 417569
7.750 * * [simplify]: Extracting #8: cost 0 inf + 419918
7.886 * [simplify]: Simplified to:
  (exp (+ y (- x (* x y))))
  (exp (+ y (- x (* x y))))
  (log (- y (- (* x y) x)))
  (exp (+ y (- x (* x y))))
  (* (cbrt (- y (- (* x y) x))) (cbrt (- y (- (* x y) x))))
  (cbrt (- y (- (* x y) x)))
  (* (- y (- (* x y) x)) (* (- y (- (* x y) x)) (- y (- (* x y) x))))
  (sqrt (- y (- (* x y) x)))
  (sqrt (- y (- (* x y) x)))
  (- (* (+ x y) (* (+ x y) (+ x y))) (* (* (* x y) (* x y)) (* x y)))
  (+ (* (+ (* x y) (+ x y)) (+ x y)) (* (* x y) (* x y)))
  (- (* x y))
  (- (* (+ x y) (+ x y)) (* (* x y) (* x y)))
  (+ (* x y) (+ x y))
  (- y (* x y))
  (- (* x y))
  (- y (- (* x y) x))
  (- y (- (* x y) x))
  (- y (- (* x y) x))
7.887 * * * [progress]: adding candidates to table
7.963 * [progress]: [Phase 3 of 3] Extracting.
7.968 * [simplify]: Simplifying:
  (- (+ x y) (* x y))
7.968 * * [simplify]: iteration 0: 5 enodes
7.969 * * [simplify]: iteration 1: 7 enodes
7.971 * * [simplify]: iteration complete: 7 enodes
7.971 * * [simplify]: Extracting #0: cost 1 inf + 0
7.971 * * [simplify]: Extracting #1: cost 3 inf + 0
7.971 * * [simplify]: Extracting #2: cost 5 inf + 0
7.971 * * [simplify]: Extracting #3: cost 3 inf + 2
7.971 * * [simplify]: Extracting #4: cost 0 inf + 208
7.971 * [simplify]: Simplified to:
  (- (+ y x) (* x y))
8.992 * [regime-testing]: Baseline error score: 0.009831710987595289
9.006 * [regime-testing]: Oracle error score: 0.009831710987595289
9.006 * [regime-testing]: End program error score: 0.009831710987595289