12.262 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.065 * * * [progress]: [2/2] Setting up program.
0.069 * [progress]: [Phase 2 of 3] Improving.
0.069 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
0.069 * * [simplify]: iteration 0: 6 enodes
0.070 * * [simplify]: iteration 1: 14 enodes
0.073 * * [simplify]: iteration 2: 29 enodes
0.079 * * [simplify]: iteration 3: 69 enodes
0.111 * * [simplify]: iteration 4: 194 enodes
0.187 * * [simplify]: iteration 5: 613 enodes
0.885 * * [simplify]: iteration 6: 2795 enodes
1.985 * * [simplify]: iteration complete: 5038 enodes
1.985 * * [simplify]: Extracting #0: cost 1 inf + 0
1.985 * * [simplify]: Extracting #1: cost 63 inf + 0
1.987 * * [simplify]: Extracting #2: cost 422 inf + 0
1.993 * * [simplify]: Extracting #3: cost 1163 inf + 1143
2.004 * * [simplify]: Extracting #4: cost 1490 inf + 2992
2.031 * * [simplify]: Extracting #5: cost 1231 inf + 118365
2.127 * * [simplify]: Extracting #6: cost 589 inf + 577721
2.267 * * [simplify]: Extracting #7: cost 104 inf + 966547
2.472 * * [simplify]: Extracting #8: cost 0 inf + 1035009
2.610 * * [simplify]: Extracting #9: cost 0 inf + 1022372
2.777 * * [simplify]: Extracting #10: cost 0 inf + 1022001
2.972 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
2.973 * * [progress]: iteration 1 / 4
2.973 * * * [progress]: picking best candidate
2.980 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
2.980 * * * [progress]: localizing error
2.997 * * * [progress]: generating rewritten candidates
2.997 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
3.028 * * * [progress]: generating series expansions
3.028 * * * * [progress]: [ 1 / 1 ] generating series at (2)
3.029 * [backup-simplify]: Simplify (- (pow x 4.0) (pow y 4.0)) into (- (pow x 4) (pow y 4))
3.029 * [approximate]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in (x y) around 0
3.029 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in y
3.029 * [taylor]: Taking taylor expansion of (pow x 4) in y
3.029 * [taylor]: Taking taylor expansion of x in y
3.029 * [backup-simplify]: Simplify x into x
3.029 * [taylor]: Taking taylor expansion of (pow y 4) in y
3.029 * [taylor]: Taking taylor expansion of y in y
3.029 * [backup-simplify]: Simplify 0 into 0
3.029 * [backup-simplify]: Simplify 1 into 1
3.029 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in x
3.029 * [taylor]: Taking taylor expansion of (pow x 4) in x
3.029 * [taylor]: Taking taylor expansion of x in x
3.029 * [backup-simplify]: Simplify 0 into 0
3.029 * [backup-simplify]: Simplify 1 into 1
3.029 * [taylor]: Taking taylor expansion of (pow y 4) in x
3.029 * [taylor]: Taking taylor expansion of y in x
3.029 * [backup-simplify]: Simplify y into y
3.029 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in x
3.029 * [taylor]: Taking taylor expansion of (pow x 4) in x
3.029 * [taylor]: Taking taylor expansion of x in x
3.029 * [backup-simplify]: Simplify 0 into 0
3.029 * [backup-simplify]: Simplify 1 into 1
3.030 * [taylor]: Taking taylor expansion of (pow y 4) in x
3.030 * [taylor]: Taking taylor expansion of y in x
3.030 * [backup-simplify]: Simplify y into y
3.030 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.030 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
3.030 * [backup-simplify]: Simplify (- (pow y 4)) into (- (pow y 4))
3.030 * [backup-simplify]: Simplify (+ 0 (- (pow y 4))) into (- (pow y 4))
3.030 * [taylor]: Taking taylor expansion of (- (pow y 4)) in y
3.030 * [taylor]: Taking taylor expansion of (pow y 4) in y
3.030 * [taylor]: Taking taylor expansion of y in y
3.030 * [backup-simplify]: Simplify 0 into 0
3.030 * [backup-simplify]: Simplify 1 into 1
3.031 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
3.031 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (* 0 (pow y 2))) into 0
3.032 * [backup-simplify]: Simplify (- 0) into 0
3.032 * [backup-simplify]: Simplify (+ 0 0) into 0
3.032 * [taylor]: Taking taylor expansion of 0 in y
3.032 * [backup-simplify]: Simplify 0 into 0
3.032 * [backup-simplify]: Simplify 0 into 0
3.033 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
3.033 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (* 0 (pow y 2)))) into 0
3.034 * [backup-simplify]: Simplify (- 0) into 0
3.034 * [backup-simplify]: Simplify (+ 0 0) into 0
3.034 * [taylor]: Taking taylor expansion of 0 in y
3.034 * [backup-simplify]: Simplify 0 into 0
3.034 * [backup-simplify]: Simplify 0 into 0
3.034 * [backup-simplify]: Simplify 0 into 0
3.035 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))) into 0
3.036 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (+ (* 0 0) (* 0 (pow y 2))))) into 0
3.036 * [backup-simplify]: Simplify (- 0) into 0
3.037 * [backup-simplify]: Simplify (+ 0 0) into 0
3.037 * [taylor]: Taking taylor expansion of 0 in y
3.037 * [backup-simplify]: Simplify 0 into 0
3.037 * [backup-simplify]: Simplify 0 into 0
3.037 * [backup-simplify]: Simplify 0 into 0
3.037 * [backup-simplify]: Simplify 0 into 0
3.037 * [backup-simplify]: Simplify 0 into 0
3.038 * [backup-simplify]: Simplify (- (pow (/ 1 x) 4.0) (pow (/ 1 y) 4.0)) into (- (/ 1 (pow x 4)) (/ 1 (pow y 4)))
3.038 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in (x y) around 0
3.038 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in y
3.038 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
3.038 * [taylor]: Taking taylor expansion of (pow x 4) in y
3.038 * [taylor]: Taking taylor expansion of x in y
3.038 * [backup-simplify]: Simplify x into x
3.038 * [backup-simplify]: Simplify (* x x) into (pow x 2)
3.038 * [backup-simplify]: Simplify (* (pow x 2) (pow x 2)) into (pow x 4)
3.038 * [backup-simplify]: Simplify (/ 1 (pow x 4)) into (/ 1 (pow x 4))
3.038 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
3.038 * [taylor]: Taking taylor expansion of (pow y 4) in y
3.038 * [taylor]: Taking taylor expansion of y in y
3.038 * [backup-simplify]: Simplify 0 into 0
3.038 * [backup-simplify]: Simplify 1 into 1
3.039 * [backup-simplify]: Simplify (* 1 1) into 1
3.039 * [backup-simplify]: Simplify (* 1 1) into 1
3.040 * [backup-simplify]: Simplify (/ 1 1) into 1
3.040 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
3.040 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
3.040 * [taylor]: Taking taylor expansion of (pow x 4) in x
3.040 * [taylor]: Taking taylor expansion of x in x
3.040 * [backup-simplify]: Simplify 0 into 0
3.040 * [backup-simplify]: Simplify 1 into 1
3.040 * [backup-simplify]: Simplify (* 1 1) into 1
3.041 * [backup-simplify]: Simplify (* 1 1) into 1
3.041 * [backup-simplify]: Simplify (/ 1 1) into 1
3.041 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
3.041 * [taylor]: Taking taylor expansion of (pow y 4) in x
3.041 * [taylor]: Taking taylor expansion of y in x
3.041 * [backup-simplify]: Simplify y into y
3.041 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.042 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
3.042 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
3.042 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
3.042 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
3.042 * [taylor]: Taking taylor expansion of (pow x 4) in x
3.042 * [taylor]: Taking taylor expansion of x in x
3.042 * [backup-simplify]: Simplify 0 into 0
3.042 * [backup-simplify]: Simplify 1 into 1
3.042 * [backup-simplify]: Simplify (* 1 1) into 1
3.043 * [backup-simplify]: Simplify (* 1 1) into 1
3.043 * [backup-simplify]: Simplify (/ 1 1) into 1
3.043 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
3.043 * [taylor]: Taking taylor expansion of (pow y 4) in x
3.043 * [taylor]: Taking taylor expansion of y in x
3.043 * [backup-simplify]: Simplify y into y
3.043 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.043 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
3.044 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
3.044 * [backup-simplify]: Simplify (+ 1 0) into 1
3.044 * [taylor]: Taking taylor expansion of 1 in y
3.044 * [backup-simplify]: Simplify 1 into 1
3.045 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.045 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.046 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.047 * [backup-simplify]: Simplify (+ 0 0) into 0
3.047 * [taylor]: Taking taylor expansion of 0 in y
3.047 * [backup-simplify]: Simplify 0 into 0
3.048 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.049 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.049 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.050 * [backup-simplify]: Simplify (+ 0 0) into 0
3.050 * [taylor]: Taking taylor expansion of 0 in y
3.050 * [backup-simplify]: Simplify 0 into 0
3.051 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.052 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.053 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.053 * [backup-simplify]: Simplify (+ 0 0) into 0
3.053 * [taylor]: Taking taylor expansion of 0 in y
3.053 * [backup-simplify]: Simplify 0 into 0
3.055 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.056 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.057 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.057 * [backup-simplify]: Simplify (- (/ 1 (pow y 4))) into (- (/ 1 (pow y 4)))
3.057 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 4)))) into (- (/ 1 (pow y 4)))
3.057 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 4))) in y
3.057 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
3.057 * [taylor]: Taking taylor expansion of (pow y 4) in y
3.057 * [taylor]: Taking taylor expansion of y in y
3.057 * [backup-simplify]: Simplify 0 into 0
3.057 * [backup-simplify]: Simplify 1 into 1
3.058 * [backup-simplify]: Simplify (* 1 1) into 1
3.058 * [backup-simplify]: Simplify (* 1 1) into 1
3.058 * [backup-simplify]: Simplify (/ 1 1) into 1
3.059 * [backup-simplify]: Simplify (- 1) into -1
3.059 * [backup-simplify]: Simplify -1 into -1
3.059 * [backup-simplify]: Simplify 1 into 1
3.061 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
3.062 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
3.063 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.063 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
3.063 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (* 0 (pow y 2))) into 0
3.064 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))))) into 0
3.064 * [backup-simplify]: Simplify (- 0) into 0
3.065 * [backup-simplify]: Simplify (+ 0 0) into 0
3.065 * [taylor]: Taking taylor expansion of 0 in y
3.065 * [backup-simplify]: Simplify 0 into 0
3.065 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.066 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.067 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.067 * [backup-simplify]: Simplify (- 0) into 0
3.067 * [backup-simplify]: Simplify 0 into 0
3.067 * [backup-simplify]: Simplify 0 into 0
3.067 * [backup-simplify]: Simplify 0 into 0
3.069 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
3.070 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
3.071 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.072 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
3.073 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (* 0 (pow y 2)))) into 0
3.073 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))) (* 0 (/ 0 (pow y 4))))) into 0
3.073 * [backup-simplify]: Simplify (- 0) into 0
3.074 * [backup-simplify]: Simplify (+ 0 0) into 0
3.074 * [taylor]: Taking taylor expansion of 0 in y
3.074 * [backup-simplify]: Simplify 0 into 0
3.075 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.076 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.077 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.077 * [backup-simplify]: Simplify (- 0) into 0
3.077 * [backup-simplify]: Simplify 0 into 0
3.077 * [backup-simplify]: Simplify 0 into 0
3.077 * [backup-simplify]: Simplify 0 into 0
3.078 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 x))) 4)) (* -1 (pow (* (/ 1 (/ 1 y)) 1) 4))) into (- (pow x 4) (pow y 4))
3.078 * [backup-simplify]: Simplify (- (pow (/ 1 (- x)) 4.0) (pow (/ 1 (- y)) 4.0)) into (- (/ 1 (pow x 4)) (/ 1 (pow y 4)))
3.078 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in (x y) around 0
3.078 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in y
3.078 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
3.078 * [taylor]: Taking taylor expansion of (pow x 4) in y
3.078 * [taylor]: Taking taylor expansion of x in y
3.078 * [backup-simplify]: Simplify x into x
3.078 * [backup-simplify]: Simplify (* x x) into (pow x 2)
3.079 * [backup-simplify]: Simplify (* (pow x 2) (pow x 2)) into (pow x 4)
3.079 * [backup-simplify]: Simplify (/ 1 (pow x 4)) into (/ 1 (pow x 4))
3.079 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
3.079 * [taylor]: Taking taylor expansion of (pow y 4) in y
3.079 * [taylor]: Taking taylor expansion of y in y
3.079 * [backup-simplify]: Simplify 0 into 0
3.079 * [backup-simplify]: Simplify 1 into 1
3.079 * [backup-simplify]: Simplify (* 1 1) into 1
3.080 * [backup-simplify]: Simplify (* 1 1) into 1
3.080 * [backup-simplify]: Simplify (/ 1 1) into 1
3.080 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
3.080 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
3.080 * [taylor]: Taking taylor expansion of (pow x 4) in x
3.080 * [taylor]: Taking taylor expansion of x in x
3.080 * [backup-simplify]: Simplify 0 into 0
3.080 * [backup-simplify]: Simplify 1 into 1
3.081 * [backup-simplify]: Simplify (* 1 1) into 1
3.081 * [backup-simplify]: Simplify (* 1 1) into 1
3.081 * [backup-simplify]: Simplify (/ 1 1) into 1
3.081 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
3.081 * [taylor]: Taking taylor expansion of (pow y 4) in x
3.081 * [taylor]: Taking taylor expansion of y in x
3.081 * [backup-simplify]: Simplify y into y
3.082 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.082 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
3.082 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
3.082 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
3.082 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
3.082 * [taylor]: Taking taylor expansion of (pow x 4) in x
3.082 * [taylor]: Taking taylor expansion of x in x
3.082 * [backup-simplify]: Simplify 0 into 0
3.082 * [backup-simplify]: Simplify 1 into 1
3.082 * [backup-simplify]: Simplify (* 1 1) into 1
3.083 * [backup-simplify]: Simplify (* 1 1) into 1
3.083 * [backup-simplify]: Simplify (/ 1 1) into 1
3.083 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
3.083 * [taylor]: Taking taylor expansion of (pow y 4) in x
3.083 * [taylor]: Taking taylor expansion of y in x
3.083 * [backup-simplify]: Simplify y into y
3.083 * [backup-simplify]: Simplify (* y y) into (pow y 2)
3.084 * [backup-simplify]: Simplify (* (pow y 2) (pow y 2)) into (pow y 4)
3.084 * [backup-simplify]: Simplify (/ 1 (pow y 4)) into (/ 1 (pow y 4))
3.084 * [backup-simplify]: Simplify (+ 1 0) into 1
3.084 * [taylor]: Taking taylor expansion of 1 in y
3.084 * [backup-simplify]: Simplify 1 into 1
3.085 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.086 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.086 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.087 * [backup-simplify]: Simplify (+ 0 0) into 0
3.087 * [taylor]: Taking taylor expansion of 0 in y
3.087 * [backup-simplify]: Simplify 0 into 0
3.088 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.089 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.090 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.090 * [backup-simplify]: Simplify (+ 0 0) into 0
3.090 * [taylor]: Taking taylor expansion of 0 in y
3.090 * [backup-simplify]: Simplify 0 into 0
3.091 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.092 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
3.093 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.094 * [backup-simplify]: Simplify (+ 0 0) into 0
3.094 * [taylor]: Taking taylor expansion of 0 in y
3.094 * [backup-simplify]: Simplify 0 into 0
3.095 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.096 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
3.097 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.097 * [backup-simplify]: Simplify (- (/ 1 (pow y 4))) into (- (/ 1 (pow y 4)))
3.098 * [backup-simplify]: Simplify (+ 0 (- (/ 1 (pow y 4)))) into (- (/ 1 (pow y 4)))
3.098 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 4))) in y
3.098 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
3.098 * [taylor]: Taking taylor expansion of (pow y 4) in y
3.098 * [taylor]: Taking taylor expansion of y in y
3.098 * [backup-simplify]: Simplify 0 into 0
3.098 * [backup-simplify]: Simplify 1 into 1
3.098 * [backup-simplify]: Simplify (* 1 1) into 1
3.099 * [backup-simplify]: Simplify (* 1 1) into 1
3.099 * [backup-simplify]: Simplify (/ 1 1) into 1
3.099 * [backup-simplify]: Simplify (- 1) into -1
3.099 * [backup-simplify]: Simplify -1 into -1
3.100 * [backup-simplify]: Simplify 1 into 1
3.101 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
3.102 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))))) into 0
3.103 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.103 * [backup-simplify]: Simplify (+ (* y 0) (* 0 y)) into 0
3.104 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (* 0 (pow y 2))) into 0
3.104 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))))) into 0
3.104 * [backup-simplify]: Simplify (- 0) into 0
3.105 * [backup-simplify]: Simplify (+ 0 0) into 0
3.105 * [taylor]: Taking taylor expansion of 0 in y
3.105 * [backup-simplify]: Simplify 0 into 0
3.106 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.106 * [backup-simplify]: Simplify (+ (* 1 0) (* 0 1)) into 0
3.107 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
3.107 * [backup-simplify]: Simplify (- 0) into 0
3.107 * [backup-simplify]: Simplify 0 into 0
3.107 * [backup-simplify]: Simplify 0 into 0
3.108 * [backup-simplify]: Simplify 0 into 0
3.109 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
3.111 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))))) into 0
3.112 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.112 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (* 0 y))) into 0
3.113 * [backup-simplify]: Simplify (+ (* (pow y 2) 0) (+ (* 0 0) (* 0 (pow y 2)))) into 0
3.114 * [backup-simplify]: Simplify (- (+ (* (/ 1 (pow y 4)) (/ 0 (pow y 4))) (* 0 (/ 0 (pow y 4))))) into 0
3.114 * [backup-simplify]: Simplify (- 0) into 0
3.118 * [backup-simplify]: Simplify (+ 0 0) into 0
3.118 * [taylor]: Taking taylor expansion of 0 in y
3.118 * [backup-simplify]: Simplify 0 into 0
3.120 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.121 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* 0 0) (* 0 1))) into 0
3.122 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
3.122 * [backup-simplify]: Simplify (- 0) into 0
3.122 * [backup-simplify]: Simplify 0 into 0
3.122 * [backup-simplify]: Simplify 0 into 0
3.122 * [backup-simplify]: Simplify 0 into 0
3.123 * [backup-simplify]: Simplify (+ (* 1 (pow (* 1 (/ 1 (/ 1 (- x)))) 4)) (* -1 (pow (* (/ 1 (/ 1 (- y))) 1) 4))) into (- (pow x 4) (pow y 4))
3.123 * * * [progress]: simplifying candidates
3.124 * [simplify]: Simplifying:
  (/ (exp (pow x 4.0)) (exp (pow y 4.0)))
  (log (- (pow x 4.0) (pow y 4.0)))
  (exp (- (pow x 4.0) (pow y 4.0)))
  (* (cbrt (- (pow x 4.0) (pow y 4.0))) (cbrt (- (pow x 4.0) (pow y 4.0))))
  (cbrt (- (pow x 4.0) (pow y 4.0)))
  (* (* (- (pow x 4.0) (pow y 4.0)) (- (pow x 4.0) (pow y 4.0))) (- (pow x 4.0) (pow y 4.0)))
  (sqrt (- (pow x 4.0) (pow y 4.0)))
  (sqrt (- (pow x 4.0) (pow y 4.0)))
  (- (pow (pow x 4.0) 3) (pow (pow y 4.0) 3))
  (+ (* (pow x 4.0) (pow x 4.0)) (+ (* (pow y 4.0) (pow y 4.0)) (* (pow x 4.0) (pow y 4.0))))
  (- (pow y 4.0))
  (- (* (pow x 4.0) (pow x 4.0)) (* (pow y 4.0) (pow y 4.0)))
  (+ (pow x 4.0) (pow y 4.0))
  (+ (pow (sqrt x) 4.0) (pow (sqrt y) 4.0))
  (- (pow (sqrt x) 4.0) (pow (sqrt y) 4.0))
  (+ (pow (sqrt x) 4.0) (sqrt (pow y 4.0)))
  (- (pow (sqrt x) 4.0) (sqrt (pow y 4.0)))
  (+ (pow (sqrt x) 4.0) (pow y (/ 4.0 2)))
  (- (pow (sqrt x) 4.0) (pow y (/ 4.0 2)))
  (+ (sqrt (pow x 4.0)) (pow (sqrt y) 4.0))
  (- (sqrt (pow x 4.0)) (pow (sqrt y) 4.0))
  (+ (sqrt (pow x 4.0)) (sqrt (pow y 4.0)))
  (- (sqrt (pow x 4.0)) (sqrt (pow y 4.0)))
  (+ (sqrt (pow x 4.0)) (pow y (/ 4.0 2)))
  (- (sqrt (pow x 4.0)) (pow y (/ 4.0 2)))
  (+ (pow x (/ 4.0 2)) (pow (sqrt y) 4.0))
  (- (pow x (/ 4.0 2)) (pow (sqrt y) 4.0))
  (+ (pow x (/ 4.0 2)) (sqrt (pow y 4.0)))
  (- (pow x (/ 4.0 2)) (sqrt (pow y 4.0)))
  (+ (pow x (/ 4.0 2)) (pow y (/ 4.0 2)))
  (- (pow x (/ 4.0 2)) (pow y (/ 4.0 2)))
  (- (pow x 4.0) (pow y 4.0))
  (- (pow x 4.0) (pow y 4.0))
  (- (pow y 4.0))
  0
  (- (pow x 4) (pow y 4))
  (- (pow x 4) (pow y 4))
3.125 * * [simplify]: iteration 0: 61 enodes
3.147 * * [simplify]: iteration 1: 127 enodes
3.174 * * [simplify]: iteration 2: 315 enodes
3.277 * * [simplify]: iteration 3: 960 enodes
4.277 * * [simplify]: iteration 4: 4960 enodes
6.123 * * [simplify]: iteration complete: 5001 enodes
6.123 * * [simplify]: Extracting #0: cost 32 inf + 0
6.124 * * [simplify]: Extracting #1: cost 282 inf + 1
6.129 * * [simplify]: Extracting #2: cost 1075 inf + 2
6.142 * * [simplify]: Extracting #3: cost 1473 inf + 30224
6.206 * * [simplify]: Extracting #4: cost 840 inf + 392677
6.351 * * [simplify]: Extracting #5: cost 143 inf + 952424
6.482 * * [simplify]: Extracting #6: cost 0 inf + 1067398
6.626 * * [simplify]: Extracting #7: cost 0 inf + 1062434
6.776 * * [simplify]: Extracting #8: cost 0 inf + 1062394
6.957 * [simplify]: Simplified to:
  (exp (- (pow x 4.0) (pow y 4.0)))
  (log (- (pow x 4.0) (pow y 4.0)))
  (exp (- (pow x 4.0) (pow y 4.0)))
  (* (cbrt (- (pow x 4.0) (pow y 4.0))) (cbrt (- (pow x 4.0) (pow y 4.0))))
  (cbrt (- (pow x 4.0) (pow y 4.0)))
  (* (- (pow x 4.0) (pow y 4.0)) (* (- (pow x 4.0) (pow y 4.0)) (- (pow x 4.0) (pow y 4.0))))
  (sqrt (- (pow x 4.0) (pow y 4.0)))
  (sqrt (- (pow x 4.0) (pow y 4.0)))
  (- (* (* (pow x 4.0) (pow x 4.0)) (pow x 4.0)) (* (pow y 4.0) (* (pow y 4.0) (pow y 4.0))))
  (+ (* (pow x 4.0) (pow x 4.0)) (* (+ (pow y 4.0) (pow x 4.0)) (pow y 4.0)))
  (- (pow y 4.0))
  (* (- (pow x 4.0) (pow y 4.0)) (+ (pow y 4.0) (pow x 4.0)))
  (+ (pow y 4.0) (pow x 4.0))
  (+ (pow (sqrt y) 4.0) (pow (sqrt x) 4.0))
  (- (pow (sqrt x) 4.0) (pow (sqrt y) 4.0))
  (+ (pow (sqrt x) 4.0) (sqrt (pow y 4.0)))
  (- (pow (sqrt x) 4.0) (sqrt (pow y 4.0)))
  (+ (pow (sqrt x) 4.0) (pow y (/ 4.0 2)))
  (- (pow (sqrt x) 4.0) (pow y (/ 4.0 2)))
  (+ (pow (sqrt y) 4.0) (sqrt (pow x 4.0)))
  (- (sqrt (pow x 4.0)) (pow (sqrt y) 4.0))
  (+ (sqrt (pow x 4.0)) (sqrt (pow y 4.0)))
  (- (sqrt (pow x 4.0)) (sqrt (pow y 4.0)))
  (+ (pow y (/ 4.0 2)) (sqrt (pow x 4.0)))
  (- (sqrt (pow x 4.0)) (pow y (/ 4.0 2)))
  (+ (pow x (/ 4.0 2)) (pow (sqrt y) 4.0))
  (- (pow x (/ 4.0 2)) (pow (sqrt y) 4.0))
  (+ (pow x (/ 4.0 2)) (sqrt (pow y 4.0)))
  (- (pow x (/ 4.0 2)) (sqrt (pow y 4.0)))
  (+ (pow x (/ 4.0 2)) (pow y (/ 4.0 2)))
  (- (pow x (/ 4.0 2)) (pow y (/ 4.0 2)))
  (- (pow x 4.0) (pow y 4.0))
  (- (pow x 4.0) (pow y 4.0))
  (- (pow y 4.0))
  0
  (* (- (* x x) (* y y)) (+ (* y y) (* x x)))
  (* (- (* x x) (* y y)) (+ (* y y) (* x x)))
6.960 * * * [progress]: adding candidates to table
7.154 * [progress]: [Phase 3 of 3] Extracting.
7.162 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
7.162 * * [simplify]: iteration 0: 6 enodes
7.163 * * [simplify]: iteration complete: 6 enodes
7.163 * * [simplify]: Extracting #0: cost 1 inf + 0
7.163 * * [simplify]: Extracting #1: cost 3 inf + 0
7.163 * * [simplify]: Extracting #2: cost 6 inf + 0
7.163 * * [simplify]: Extracting #3: cost 2 inf + 215
7.163 * * [simplify]: Extracting #4: cost 0 inf + 890
7.163 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
9.647 * [regime-testing]: Baseline error score: 0.0035735670084662027
9.658 * [regime-testing]: Oracle error score: 0.0035735670084662027
9.658 * [regime-testing]: End program error score: 0.0035735670084662027