34.030 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.013 * * * [progress]: [2/2] Setting up program.
0.016 * [progress]: [Phase 2 of 3] Improving.
0.016 * [simplify]: Simplifying:
  (- (+ x y) (* x y))
0.016 * * [simplify]: iteration 0: 5 enodes
0.017 * * [simplify]: iteration 1: 11 enodes
0.019 * * [simplify]: iteration 2: 25 enodes
0.022 * * [simplify]: iteration 3: 37 enodes
0.027 * * [simplify]: iteration 4: 44 enodes
0.032 * * [simplify]: iteration 5: 60 enodes
0.050 * * [simplify]: iteration 6: 115 enodes
0.080 * * [simplify]: iteration 7: 225 enodes
0.152 * * [simplify]: iteration 8: 428 enodes
0.280 * * [simplify]: iteration 9: 817 enodes
0.559 * * [simplify]: iteration 10: 1170 enodes
1.203 * * [simplify]: iteration 11: 1715 enodes
2.386 * * [simplify]: iteration 12: 2411 enodes
4.115 * * [simplify]: iteration 13: 3231 enodes
5.920 * * [simplify]: iteration complete: 5000 enodes
5.920 * * [simplify]: Extracting #0: cost 1 inf + 0
5.922 * * [simplify]: Extracting #1: cost 480 inf + 0
5.925 * * [simplify]: Extracting #2: cost 504 inf + 5126
5.936 * * [simplify]: Extracting #3: cost 200 inf + 37625
5.954 * * [simplify]: Extracting #4: cost 3 inf + 57656
5.970 * * [simplify]: Extracting #5: cost 0 inf + 58063
5.988 * * [simplify]: Extracting #6: cost 0 inf + 58023
6.005 * [simplify]: Simplified to:
  (- (+ x y) (* y x))
6.006 * * [progress]: iteration 1 / 4
6.006 * * * [progress]: picking best candidate
6.010 * * * * [pick]: Picked  #<alt (λ (x y) (- (+ x y) (* x y)))>
6.011 * * * [progress]: localizing error
6.022 * * * [progress]: generating rewritten candidates
6.022 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
6.066 * * * [progress]: generating series expansions
6.066 * * * * [progress]: [ 1 / 1 ] generating series at (2)
6.067 * [backup-simplify]: Simplify (- (+ x y) (* x y)) into (- (+ x y) (* x y))
6.067 * [approximate]: Taking taylor expansion of (- (+ x y) (* x y)) in (x y) around 0
6.067 * [taylor]: Taking taylor expansion of (- (+ x y) (* x y)) in y
6.067 * [taylor]: Taking taylor expansion of (+ x y) in y
6.067 * [taylor]: Taking taylor expansion of x in y
6.067 * [backup-simplify]: Simplify x into x
6.067 * [taylor]: Taking taylor expansion of y in y
6.067 * [backup-simplify]: Simplify 0 into 0
6.067 * [backup-simplify]: Simplify 1 into 1
6.067 * [taylor]: Taking taylor expansion of (* x y) in y
6.067 * [taylor]: Taking taylor expansion of x in y
6.067 * [backup-simplify]: Simplify x into x
6.067 * [taylor]: Taking taylor expansion of y in y
6.067 * [backup-simplify]: Simplify 0 into 0
6.067 * [backup-simplify]: Simplify 1 into 1
6.067 * [taylor]: Taking taylor expansion of (- (+ x y) (* x y)) in x
6.067 * [taylor]: Taking taylor expansion of (+ x y) in x
6.067 * [taylor]: Taking taylor expansion of x in x
6.067 * [backup-simplify]: Simplify 0 into 0
6.067 * [backup-simplify]: Simplify 1 into 1
6.067 * [taylor]: Taking taylor expansion of y in x
6.067 * [backup-simplify]: Simplify y into y
6.067 * [taylor]: Taking taylor expansion of (* x y) in x
6.067 * [taylor]: Taking taylor expansion of x in x
6.067 * [backup-simplify]: Simplify 0 into 0
6.067 * [backup-simplify]: Simplify 1 into 1
6.067 * [taylor]: Taking taylor expansion of y in x
6.067 * [backup-simplify]: Simplify y into y
6.067 * [taylor]: Taking taylor expansion of (- (+ x y) (* x y)) in x
6.067 * [taylor]: Taking taylor expansion of (+ x y) in x
6.067 * [taylor]: Taking taylor expansion of x in x
6.067 * [backup-simplify]: Simplify 0 into 0
6.067 * [backup-simplify]: Simplify 1 into 1
6.067 * [taylor]: Taking taylor expansion of y in x
6.067 * [backup-simplify]: Simplify y into y
6.067 * [taylor]: Taking taylor expansion of (* x y) in x
6.067 * [taylor]: Taking taylor expansion of x in x
6.067 * [backup-simplify]: Simplify 0 into 0
6.068 * [backup-simplify]: Simplify 1 into 1
6.068 * [taylor]: Taking taylor expansion of y in x
6.068 * [backup-simplify]: Simplify y into y
6.068 * [backup-simplify]: Simplify (+ 0 y) into y
6.068 * [backup-simplify]: Simplify (* 0 y) into 0
6.068 * [backup-simplify]: Simplify (- 0) into 0
6.068 * [backup-simplify]: Simplify (+ y 0) into y
6.068 * [taylor]: Taking taylor expansion of y in y
6.068 * [backup-simplify]: Simplify 0 into 0
6.069 * [backup-simplify]: Simplify 1 into 1
6.069 * [backup-simplify]: Simplify 0 into 0
6.069 * [backup-simplify]: Simplify (+ 1 0) into 1
6.069 * [backup-simplify]: Simplify (+ (* 0 0) (* 1 y)) into y
6.070 * [backup-simplify]: Simplify (- y) into (- y)
6.070 * [backup-simplify]: Simplify (+ 1 (- y)) into (- 1 y)
6.070 * [taylor]: Taking taylor expansion of (- 1 y) in y
6.070 * [taylor]: Taking taylor expansion of 1 in y
6.070 * [backup-simplify]: Simplify 1 into 1
6.070 * [taylor]: Taking taylor expansion of y in y
6.070 * [backup-simplify]: Simplify 0 into 0
6.070 * [backup-simplify]: Simplify 1 into 1
6.070 * [backup-simplify]: Simplify (- 0) into 0
6.071 * [backup-simplify]: Simplify (+ 1 0) into 1
6.071 * [backup-simplify]: Simplify 1 into 1
6.071 * [backup-simplify]: Simplify 1 into 1
6.071 * [backup-simplify]: Simplify (+ 0 0) into 0
6.072 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 0) (* 0 y))) into 0
6.072 * [backup-simplify]: Simplify (- 0) into 0
6.072 * [backup-simplify]: Simplify (+ 0 0) into 0
6.073 * [taylor]: Taking taylor expansion of 0 in y
6.073 * [backup-simplify]: Simplify 0 into 0
6.073 * [backup-simplify]: Simplify 0 into 0
6.073 * [backup-simplify]: Simplify (- 1) into -1
6.073 * [backup-simplify]: Simplify (+ 0 -1) into -1
6.073 * [backup-simplify]: Simplify -1 into -1
6.074 * [backup-simplify]: Simplify (+ (* -1 (* y x)) (+ (* 1 (* y 1)) (* 1 (* 1 x)))) into (- (+ x y) (* x y))
6.074 * [backup-simplify]: Simplify (- (+ (/ 1 x) (/ 1 y)) (* (/ 1 x) (/ 1 y))) into (- (+ (/ 1 x) (/ 1 y)) (/ 1 (* x y)))
6.074 * [approximate]: Taking taylor expansion of (- (+ (/ 1 x) (/ 1 y)) (/ 1 (* x y))) in (x y) around 0
6.074 * [taylor]: Taking taylor expansion of (- (+ (/ 1 x) (/ 1 y)) (/ 1 (* x y))) in y
6.074 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in y
6.074 * [taylor]: Taking taylor expansion of (/ 1 x) in y
6.074 * [taylor]: Taking taylor expansion of x in y
6.074 * [backup-simplify]: Simplify x into x
6.074 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
6.074 * [taylor]: Taking taylor expansion of (/ 1 y) in y
6.074 * [taylor]: Taking taylor expansion of y in y
6.074 * [backup-simplify]: Simplify 0 into 0
6.074 * [backup-simplify]: Simplify 1 into 1
6.075 * [backup-simplify]: Simplify (/ 1 1) into 1
6.075 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in y
6.075 * [taylor]: Taking taylor expansion of (* x y) in y
6.075 * [taylor]: Taking taylor expansion of x in y
6.075 * [backup-simplify]: Simplify x into x
6.075 * [taylor]: Taking taylor expansion of y in y
6.075 * [backup-simplify]: Simplify 0 into 0
6.075 * [backup-simplify]: Simplify 1 into 1
6.075 * [backup-simplify]: Simplify (* x 0) into 0
6.075 * [backup-simplify]: Simplify (+ (* x 1) (* 0 0)) into x
6.075 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
6.075 * [taylor]: Taking taylor expansion of (- (+ (/ 1 x) (/ 1 y)) (/ 1 (* x y))) in x
6.075 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in x
6.075 * [taylor]: Taking taylor expansion of (/ 1 x) in x
6.075 * [taylor]: Taking taylor expansion of x in x
6.076 * [backup-simplify]: Simplify 0 into 0
6.076 * [backup-simplify]: Simplify 1 into 1
6.076 * [backup-simplify]: Simplify (/ 1 1) into 1
6.076 * [taylor]: Taking taylor expansion of (/ 1 y) in x
6.076 * [taylor]: Taking taylor expansion of y in x
6.076 * [backup-simplify]: Simplify y into y
6.076 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.076 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
6.076 * [taylor]: Taking taylor expansion of (* x y) in x
6.076 * [taylor]: Taking taylor expansion of x in x
6.076 * [backup-simplify]: Simplify 0 into 0
6.076 * [backup-simplify]: Simplify 1 into 1
6.076 * [taylor]: Taking taylor expansion of y in x
6.076 * [backup-simplify]: Simplify y into y
6.076 * [backup-simplify]: Simplify (* 0 y) into 0
6.077 * [backup-simplify]: Simplify (+ (* 0 0) (* 1 y)) into y
6.077 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.077 * [taylor]: Taking taylor expansion of (- (+ (/ 1 x) (/ 1 y)) (/ 1 (* x y))) in x
6.077 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in x
6.077 * [taylor]: Taking taylor expansion of (/ 1 x) in x
6.077 * [taylor]: Taking taylor expansion of x in x
6.077 * [backup-simplify]: Simplify 0 into 0
6.077 * [backup-simplify]: Simplify 1 into 1
6.077 * [backup-simplify]: Simplify (/ 1 1) into 1
6.077 * [taylor]: Taking taylor expansion of (/ 1 y) in x
6.077 * [taylor]: Taking taylor expansion of y in x
6.077 * [backup-simplify]: Simplify y into y
6.077 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.078 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
6.078 * [taylor]: Taking taylor expansion of (* x y) in x
6.078 * [taylor]: Taking taylor expansion of x in x
6.078 * [backup-simplify]: Simplify 0 into 0
6.078 * [backup-simplify]: Simplify 1 into 1
6.078 * [taylor]: Taking taylor expansion of y in x
6.078 * [backup-simplify]: Simplify y into y
6.078 * [backup-simplify]: Simplify (* 0 y) into 0
6.078 * [backup-simplify]: Simplify (+ (* 0 0) (* 1 y)) into y
6.078 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.079 * [backup-simplify]: Simplify (+ 1 0) into 1
6.079 * [backup-simplify]: Simplify (- (/ 1 y)) into (- (/ 1 y))
6.079 * [backup-simplify]: Simplify (+ 1 (- (/ 1 y))) into (- 1 (/ 1 y))
6.079 * [taylor]: Taking taylor expansion of (- 1 (/ 1 y)) in y
6.079 * [taylor]: Taking taylor expansion of 1 in y
6.079 * [backup-simplify]: Simplify 1 into 1
6.079 * [taylor]: Taking taylor expansion of (/ 1 y) in y
6.079 * [taylor]: Taking taylor expansion of y in y
6.079 * [backup-simplify]: Simplify 0 into 0
6.079 * [backup-simplify]: Simplify 1 into 1
6.079 * [backup-simplify]: Simplify (/ 1 1) into 1
6.080 * [backup-simplify]: Simplify (- 1) into -1
6.080 * [backup-simplify]: Simplify (+ 0 -1) into -1
6.080 * [backup-simplify]: Simplify -1 into -1
6.081 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
6.081 * [backup-simplify]: Simplify (+ 0 (/ 1 y)) into (/ 1 y)
6.082 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 0) (* 0 y))) into 0
6.082 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
6.082 * [backup-simplify]: Simplify (- 0) into 0
6.082 * [backup-simplify]: Simplify (+ (/ 1 y) 0) into (/ 1 y)
6.082 * [taylor]: Taking taylor expansion of (/ 1 y) in y
6.082 * [taylor]: Taking taylor expansion of y in y
6.082 * [backup-simplify]: Simplify 0 into 0
6.082 * [backup-simplify]: Simplify 1 into 1
6.083 * [backup-simplify]: Simplify (/ 1 1) into 1
6.083 * [backup-simplify]: Simplify 1 into 1
6.083 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
6.084 * [backup-simplify]: Simplify (- 0) into 0
6.084 * [backup-simplify]: Simplify (+ 1 0) into 1
6.084 * [backup-simplify]: Simplify 1 into 1
6.085 * [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))
6.085 * [backup-simplify]: Simplify (- (+ (/ 1 (- x)) (/ 1 (- y))) (* (/ 1 (- x)) (/ 1 (- y)))) into (- (+ (/ 1 (* x y)) (+ (/ 1 x) (/ 1 y))))
6.085 * [approximate]: Taking taylor expansion of (- (+ (/ 1 (* x y)) (+ (/ 1 x) (/ 1 y)))) in (x y) around 0
6.085 * [taylor]: Taking taylor expansion of (- (+ (/ 1 (* x y)) (+ (/ 1 x) (/ 1 y)))) in y
6.085 * [taylor]: Taking taylor expansion of (+ (/ 1 (* x y)) (+ (/ 1 x) (/ 1 y))) in y
6.085 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in y
6.085 * [taylor]: Taking taylor expansion of (* x y) in y
6.085 * [taylor]: Taking taylor expansion of x in y
6.085 * [backup-simplify]: Simplify x into x
6.085 * [taylor]: Taking taylor expansion of y in y
6.085 * [backup-simplify]: Simplify 0 into 0
6.085 * [backup-simplify]: Simplify 1 into 1
6.085 * [backup-simplify]: Simplify (* x 0) into 0
6.086 * [backup-simplify]: Simplify (+ (* x 1) (* 0 0)) into x
6.086 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
6.086 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in y
6.086 * [taylor]: Taking taylor expansion of (/ 1 x) in y
6.086 * [taylor]: Taking taylor expansion of x in y
6.086 * [backup-simplify]: Simplify x into x
6.086 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
6.086 * [taylor]: Taking taylor expansion of (/ 1 y) in y
6.086 * [taylor]: Taking taylor expansion of y in y
6.086 * [backup-simplify]: Simplify 0 into 0
6.086 * [backup-simplify]: Simplify 1 into 1
6.086 * [backup-simplify]: Simplify (/ 1 1) into 1
6.086 * [taylor]: Taking taylor expansion of (- (+ (/ 1 (* x y)) (+ (/ 1 x) (/ 1 y)))) in x
6.087 * [taylor]: Taking taylor expansion of (+ (/ 1 (* x y)) (+ (/ 1 x) (/ 1 y))) in x
6.087 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
6.087 * [taylor]: Taking taylor expansion of (* x y) in x
6.087 * [taylor]: Taking taylor expansion of x in x
6.087 * [backup-simplify]: Simplify 0 into 0
6.087 * [backup-simplify]: Simplify 1 into 1
6.087 * [taylor]: Taking taylor expansion of y in x
6.087 * [backup-simplify]: Simplify y into y
6.087 * [backup-simplify]: Simplify (* 0 y) into 0
6.087 * [backup-simplify]: Simplify (+ (* 0 0) (* 1 y)) into y
6.087 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.087 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in x
6.087 * [taylor]: Taking taylor expansion of (/ 1 x) in x
6.087 * [taylor]: Taking taylor expansion of x in x
6.087 * [backup-simplify]: Simplify 0 into 0
6.087 * [backup-simplify]: Simplify 1 into 1
6.088 * [backup-simplify]: Simplify (/ 1 1) into 1
6.088 * [taylor]: Taking taylor expansion of (/ 1 y) in x
6.088 * [taylor]: Taking taylor expansion of y in x
6.088 * [backup-simplify]: Simplify y into y
6.088 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.088 * [taylor]: Taking taylor expansion of (- (+ (/ 1 (* x y)) (+ (/ 1 x) (/ 1 y)))) in x
6.088 * [taylor]: Taking taylor expansion of (+ (/ 1 (* x y)) (+ (/ 1 x) (/ 1 y))) in x
6.088 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
6.088 * [taylor]: Taking taylor expansion of (* x y) in x
6.088 * [taylor]: Taking taylor expansion of x in x
6.088 * [backup-simplify]: Simplify 0 into 0
6.088 * [backup-simplify]: Simplify 1 into 1
6.088 * [taylor]: Taking taylor expansion of y in x
6.088 * [backup-simplify]: Simplify y into y
6.088 * [backup-simplify]: Simplify (* 0 y) into 0
6.089 * [backup-simplify]: Simplify (+ (* 0 0) (* 1 y)) into y
6.089 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.089 * [taylor]: Taking taylor expansion of (+ (/ 1 x) (/ 1 y)) in x
6.089 * [taylor]: Taking taylor expansion of (/ 1 x) in x
6.089 * [taylor]: Taking taylor expansion of x in x
6.089 * [backup-simplify]: Simplify 0 into 0
6.089 * [backup-simplify]: Simplify 1 into 1
6.089 * [backup-simplify]: Simplify (/ 1 1) into 1
6.089 * [taylor]: Taking taylor expansion of (/ 1 y) in x
6.089 * [taylor]: Taking taylor expansion of y in x
6.089 * [backup-simplify]: Simplify y into y
6.090 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.090 * [backup-simplify]: Simplify (+ 1 0) into 1
6.090 * [backup-simplify]: Simplify (+ (/ 1 y) 1) into (+ 1 (/ 1 y))
6.090 * [backup-simplify]: Simplify (- (+ 1 (/ 1 y))) into (- (+ 1 (/ 1 y)))
6.090 * [taylor]: Taking taylor expansion of (- (+ 1 (/ 1 y))) in y
6.090 * [taylor]: Taking taylor expansion of (+ 1 (/ 1 y)) in y
6.090 * [taylor]: Taking taylor expansion of 1 in y
6.090 * [backup-simplify]: Simplify 1 into 1
6.090 * [taylor]: Taking taylor expansion of (/ 1 y) in y
6.090 * [taylor]: Taking taylor expansion of y in y
6.090 * [backup-simplify]: Simplify 0 into 0
6.090 * [backup-simplify]: Simplify 1 into 1
6.091 * [backup-simplify]: Simplify (/ 1 1) into 1
6.091 * [backup-simplify]: Simplify (+ 0 1) into 1
6.091 * [backup-simplify]: Simplify (- 1) into -1
6.091 * [backup-simplify]: Simplify -1 into -1
6.092 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 0) (* 0 y))) into 0
6.092 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
6.093 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
6.093 * [backup-simplify]: Simplify (+ 0 (/ 1 y)) into (/ 1 y)
6.093 * [backup-simplify]: Simplify (+ 0 (/ 1 y)) into (/ 1 y)
6.093 * [backup-simplify]: Simplify (- (/ 1 y)) into (- (/ 1 y))
6.093 * [taylor]: Taking taylor expansion of (- (/ 1 y)) in y
6.093 * [taylor]: Taking taylor expansion of (/ 1 y) in y
6.093 * [taylor]: Taking taylor expansion of y in y
6.093 * [backup-simplify]: Simplify 0 into 0
6.093 * [backup-simplify]: Simplify 1 into 1
6.094 * [backup-simplify]: Simplify (/ 1 1) into 1
6.094 * [backup-simplify]: Simplify (- 1) into -1
6.094 * [backup-simplify]: Simplify -1 into -1
6.094 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
6.095 * [backup-simplify]: Simplify (+ 1 0) into 1
6.095 * [backup-simplify]: Simplify (- 1) into -1
6.095 * [backup-simplify]: Simplify -1 into -1
6.095 * [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))
6.095 * * * [progress]: simplifying candidates
6.096 * [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))
6.096 * * [simplify]: iteration 0: 32 enodes
6.104 * * [simplify]: iteration 1: 88 enodes
6.126 * * [simplify]: iteration 2: 301 enodes
6.243 * * [simplify]: iteration 3: 1192 enodes
6.868 * * [simplify]: iteration complete: 5000 enodes
6.868 * * [simplify]: Extracting #0: cost 13 inf + 0
6.870 * * [simplify]: Extracting #1: cost 501 inf + 0
6.882 * * [simplify]: Extracting #2: cost 1463 inf + 11645
6.917 * * [simplify]: Extracting #3: cost 848 inf + 178339
7.011 * * [simplify]: Extracting #4: cost 104 inf + 381527
7.146 * * [simplify]: Extracting #5: cost 31 inf + 411864
7.261 * * [simplify]: Extracting #6: cost 36 inf + 412954
7.396 * * [simplify]: Extracting #7: cost 8 inf + 417569
7.521 * * [simplify]: Extracting #8: cost 0 inf + 419918
7.654 * [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))
7.655 * * * [progress]: adding candidates to table
7.711 * [progress]: [Phase 3 of 3] Extracting.
7.717 * [simplify]: Simplifying:
  (- (+ x y) (* x y))
7.717 * * [simplify]: iteration 0: 5 enodes
7.717 * * [simplify]: iteration 1: 7 enodes
7.718 * * [simplify]: iteration complete: 7 enodes
7.718 * * [simplify]: Extracting #0: cost 1 inf + 0
7.718 * * [simplify]: Extracting #1: cost 3 inf + 0
7.718 * * [simplify]: Extracting #2: cost 5 inf + 0
7.718 * * [simplify]: Extracting #3: cost 3 inf + 2
7.718 * * [simplify]: Extracting #4: cost 0 inf + 208
7.718 * [simplify]: Simplified to:
  (- (+ y x) (* x y))
8.556 * [regime-testing]: Baseline error score: 0.009831710987595289
8.565 * [regime-testing]: Oracle error score: 0.009831710987595289
8.565 * [regime-testing]: End program error score: 0.009831710987595289