20.233 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.026 * * * [progress]: [2/2] Setting up program.
0.030 * [progress]: [Phase 2 of 3] Improving.
0.030 * [simplify]: Simplifying:
  (sqrt (fabs (- x y)))
0.030 * * [simplify]: Extracting # 0 : cost  0
0.030 * * [simplify]: Extracting # 1 : cost  0
0.030 * * [simplify]: Extracting # 2 : cost  0
0.030 * * [simplify]: Extracting # 3 : cost  0
0.030 * * [simplify]: Extracting # 4 : cost  0
0.030 * * [simplify]: Extracting # 5 : cost  0
0.030 * * [simplify]: iteration  0 :  5  enodes  (cost  5 )
0.031 * * [simplify]: Extracting # 0 : cost  0
0.031 * * [simplify]: Extracting # 1 : cost  0
0.031 * * [simplify]: Extracting # 2 : cost  0
0.031 * * [simplify]: iteration  1 :  7  enodes  (cost  5 )
0.033 * * [simplify]: Extracting # 0 : cost  0
0.033 * * [simplify]: iteration  2 :  8  enodes  (cost  5 )
0.035 * * [simplify]: Extracting # 0 : cost  0
0.035 * * [simplify]: iteration done:  8  enodes  (cost  5 )
0.035 * [simplify]: Simplified to:
  (sqrt (fabs (- x y)))
0.035 * * [progress]: iteration 1 / 4
0.035 * * * [progress]: picking best candidate
0.038 * * * * [pick]: Picked  #<alt (λ (x y) (sqrt (fabs (- x y))))>
0.039 * * * [progress]: localizing error
0.047 * * * [progress]: generating rewritten candidates
0.047 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.050 * * * [progress]: generating series expansions
0.050 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.050 * [backup-simplify]: Simplify (sqrt (fabs (- x y))) into (sqrt (fabs (- x y)))
0.050 * [approximate]: Taking taylor expansion of (sqrt (fabs (- x y))) in (x y) around 0
0.050 * [taylor]: Taking taylor expansion of (sqrt (fabs (- x y))) in y
0.050 * [taylor]: Taking taylor expansion of (fabs (- x y)) in y
0.052 * [backup-simplify]: Simplify (fabs (- x y)) into (fabs (- x y))
0.052 * [backup-simplify]: Simplify (sqrt (fabs (- x y))) into (sqrt (fabs (- x y)))
0.052 * [backup-simplify]: Simplify (/ 0 (* 2 (sqrt (fabs (- x y))))) into 0
0.052 * [taylor]: Taking taylor expansion of (sqrt (fabs (- x y))) in x
0.052 * [taylor]: Taking taylor expansion of (fabs (- x y)) in x
0.052 * [backup-simplify]: Simplify (fabs (- x y)) into (fabs (- x y))
0.052 * [backup-simplify]: Simplify (sqrt (fabs (- x y))) into (sqrt (fabs (- x y)))
0.053 * [backup-simplify]: Simplify (/ 0 (* 2 (sqrt (fabs (- x y))))) into 0
0.053 * [taylor]: Taking taylor expansion of (sqrt (fabs (- x y))) in x
0.053 * [taylor]: Taking taylor expansion of (fabs (- x y)) in x
0.053 * [backup-simplify]: Simplify (fabs (- x y)) into (fabs (- x y))
0.053 * [backup-simplify]: Simplify (sqrt (fabs (- x y))) into (sqrt (fabs (- x y)))
0.053 * [backup-simplify]: Simplify (/ 0 (* 2 (sqrt (fabs (- x y))))) into 0
0.053 * [taylor]: Taking taylor expansion of (sqrt (fabs (- x y))) in y
0.053 * [taylor]: Taking taylor expansion of (fabs (- x y)) in y
0.053 * [backup-simplify]: Simplify (fabs (- x y)) into (fabs (- x y))
0.053 * [backup-simplify]: Simplify (sqrt (fabs (- x y))) into (sqrt (fabs (- x y)))
0.053 * [backup-simplify]: Simplify (/ 0 (* 2 (sqrt (fabs (- x y))))) into 0
0.053 * [backup-simplify]: Simplify (sqrt (fabs (- x y))) into (sqrt (fabs (- x y)))
0.054 * [taylor]: Taking taylor expansion of 0 in y
0.054 * [backup-simplify]: Simplify 0 into 0
0.054 * [backup-simplify]: Simplify 0 into 0
0.054 * [backup-simplify]: Simplify 0 into 0
0.055 * [backup-simplify]: Simplify (/ (- 0 (pow 0 2) (+)) (* 2 (sqrt (fabs (- x y))))) into 0
0.055 * [taylor]: Taking taylor expansion of 0 in y
0.055 * [backup-simplify]: Simplify 0 into 0
0.055 * [backup-simplify]: Simplify 0 into 0
0.055 * [backup-simplify]: Simplify 0 into 0
0.056 * [backup-simplify]: Simplify (/ (- 0 (pow 0 2) (+)) (* 2 (sqrt (fabs (- x y))))) into 0
0.056 * [backup-simplify]: Simplify 0 into 0
0.056 * [backup-simplify]: Simplify (/ (- 0 (+ (* 2 (* 0 0)))) (* 2 (sqrt (fabs (- x y))))) into 0
0.057 * [taylor]: Taking taylor expansion of 0 in y
0.057 * [backup-simplify]: Simplify 0 into 0
0.057 * [backup-simplify]: Simplify 0 into 0
0.057 * [backup-simplify]: Simplify (sqrt (fabs (- x y))) into (sqrt (fabs (- x y)))
0.057 * [backup-simplify]: Simplify (sqrt (fabs (- (/ 1 x) (/ 1 y)))) into (sqrt (fabs (- (/ 1 x) (/ 1 y))))
0.057 * [approximate]: Taking taylor expansion of (sqrt (fabs (- (/ 1 x) (/ 1 y)))) in (x y) around 0
0.057 * [taylor]: Taking taylor expansion of (sqrt (fabs (- (/ 1 x) (/ 1 y)))) in y
0.057 * [taylor]: Taking taylor expansion of (fabs (- (/ 1 x) (/ 1 y))) in y
0.057 * [backup-simplify]: Simplify (fabs (- (/ 1 x) (/ 1 y))) into (fabs (- (/ 1 x) (/ 1 y)))
0.057 * [backup-simplify]: Simplify (sqrt (fabs (- (/ 1 x) (/ 1 y)))) into (sqrt (fabs (- (/ 1 x) (/ 1 y))))
0.057 * [backup-simplify]: Simplify (/ 0 (* 2 (sqrt (fabs (- (/ 1 x) (/ 1 y)))))) into 0
0.057 * [taylor]: Taking taylor expansion of (sqrt (fabs (- (/ 1 x) (/ 1 y)))) in x
0.058 * [taylor]: Taking taylor expansion of (fabs (- (/ 1 x) (/ 1 y))) in x
0.058 * [backup-simplify]: Simplify (fabs (- (/ 1 x) (/ 1 y))) into (fabs (- (/ 1 x) (/ 1 y)))
0.058 * [backup-simplify]: Simplify (sqrt (fabs (- (/ 1 x) (/ 1 y)))) into (sqrt (fabs (- (/ 1 x) (/ 1 y))))
0.058 * [backup-simplify]: Simplify (/ 0 (* 2 (sqrt (fabs (- (/ 1 x) (/ 1 y)))))) into 0
0.058 * [taylor]: Taking taylor expansion of (sqrt (fabs (- (/ 1 x) (/ 1 y)))) in x
0.058 * [taylor]: Taking taylor expansion of (fabs (- (/ 1 x) (/ 1 y))) in x
0.058 * [backup-simplify]: Simplify (fabs (- (/ 1 x) (/ 1 y))) into (fabs (- (/ 1 x) (/ 1 y)))
0.058 * [backup-simplify]: Simplify (sqrt (fabs (- (/ 1 x) (/ 1 y)))) into (sqrt (fabs (- (/ 1 x) (/ 1 y))))
0.059 * [backup-simplify]: Simplify (/ 0 (* 2 (sqrt (fabs (- (/ 1 x) (/ 1 y)))))) into 0
0.059 * [taylor]: Taking taylor expansion of (sqrt (fabs (- (/ 1 x) (/ 1 y)))) in y
0.059 * [taylor]: Taking taylor expansion of (fabs (- (/ 1 x) (/ 1 y))) in y
0.059 * [backup-simplify]: Simplify (fabs (- (/ 1 x) (/ 1 y))) into (fabs (- (/ 1 x) (/ 1 y)))
0.059 * [backup-simplify]: Simplify (sqrt (fabs (- (/ 1 x) (/ 1 y)))) into (sqrt (fabs (- (/ 1 x) (/ 1 y))))
0.059 * [backup-simplify]: Simplify (/ 0 (* 2 (sqrt (fabs (- (/ 1 x) (/ 1 y)))))) into 0
0.059 * [backup-simplify]: Simplify (sqrt (fabs (- (/ 1 x) (/ 1 y)))) into (sqrt (fabs (- (/ 1 x) (/ 1 y))))
0.059 * [taylor]: Taking taylor expansion of 0 in y
0.059 * [backup-simplify]: Simplify 0 into 0
0.059 * [backup-simplify]: Simplify 0 into 0
0.059 * [backup-simplify]: Simplify 0 into 0
0.060 * [backup-simplify]: Simplify (/ (- 0 (pow 0 2) (+)) (* 2 (sqrt (fabs (- (/ 1 x) (/ 1 y)))))) into 0
0.060 * [taylor]: Taking taylor expansion of 0 in y
0.060 * [backup-simplify]: Simplify 0 into 0
0.060 * [backup-simplify]: Simplify 0 into 0
0.060 * [backup-simplify]: Simplify 0 into 0
0.061 * [backup-simplify]: Simplify (/ (- 0 (pow 0 2) (+)) (* 2 (sqrt (fabs (- (/ 1 x) (/ 1 y)))))) into 0
0.061 * [backup-simplify]: Simplify 0 into 0
0.062 * [backup-simplify]: Simplify (/ (- 0 (+ (* 2 (* 0 0)))) (* 2 (sqrt (fabs (- (/ 1 x) (/ 1 y)))))) into 0
0.062 * [taylor]: Taking taylor expansion of 0 in y
0.062 * [backup-simplify]: Simplify 0 into 0
0.062 * [backup-simplify]: Simplify 0 into 0
0.062 * [backup-simplify]: Simplify (sqrt (fabs (- (/ 1 (/ 1 x)) (/ 1 (/ 1 y))))) into (sqrt (fabs (- x y)))
0.063 * [backup-simplify]: Simplify (sqrt (fabs (- (/ 1 (- x)) (/ 1 (- y))))) into (sqrt (fabs (- (/ 1 y) (/ 1 x))))
0.063 * [approximate]: Taking taylor expansion of (sqrt (fabs (- (/ 1 y) (/ 1 x)))) in (x y) around 0
0.063 * [taylor]: Taking taylor expansion of (sqrt (fabs (- (/ 1 y) (/ 1 x)))) in y
0.063 * [taylor]: Taking taylor expansion of (fabs (- (/ 1 y) (/ 1 x))) in y
0.063 * [backup-simplify]: Simplify (fabs (- (/ 1 y) (/ 1 x))) into (fabs (- (/ 1 y) (/ 1 x)))
0.063 * [backup-simplify]: Simplify (sqrt (fabs (- (/ 1 y) (/ 1 x)))) into (sqrt (fabs (- (/ 1 y) (/ 1 x))))
0.063 * [backup-simplify]: Simplify (/ 0 (* 2 (sqrt (fabs (- (/ 1 y) (/ 1 x)))))) into 0
0.063 * [taylor]: Taking taylor expansion of (sqrt (fabs (- (/ 1 y) (/ 1 x)))) in x
0.063 * [taylor]: Taking taylor expansion of (fabs (- (/ 1 y) (/ 1 x))) in x
0.063 * [backup-simplify]: Simplify (fabs (- (/ 1 y) (/ 1 x))) into (fabs (- (/ 1 y) (/ 1 x)))
0.064 * [backup-simplify]: Simplify (sqrt (fabs (- (/ 1 y) (/ 1 x)))) into (sqrt (fabs (- (/ 1 y) (/ 1 x))))
0.064 * [backup-simplify]: Simplify (/ 0 (* 2 (sqrt (fabs (- (/ 1 y) (/ 1 x)))))) into 0
0.064 * [taylor]: Taking taylor expansion of (sqrt (fabs (- (/ 1 y) (/ 1 x)))) in x
0.064 * [taylor]: Taking taylor expansion of (fabs (- (/ 1 y) (/ 1 x))) in x
0.064 * [backup-simplify]: Simplify (fabs (- (/ 1 y) (/ 1 x))) into (fabs (- (/ 1 y) (/ 1 x)))
0.064 * [backup-simplify]: Simplify (sqrt (fabs (- (/ 1 y) (/ 1 x)))) into (sqrt (fabs (- (/ 1 y) (/ 1 x))))
0.064 * [backup-simplify]: Simplify (/ 0 (* 2 (sqrt (fabs (- (/ 1 y) (/ 1 x)))))) into 0
0.064 * [taylor]: Taking taylor expansion of (sqrt (fabs (- (/ 1 y) (/ 1 x)))) in y
0.064 * [taylor]: Taking taylor expansion of (fabs (- (/ 1 y) (/ 1 x))) in y
0.065 * [backup-simplify]: Simplify (fabs (- (/ 1 y) (/ 1 x))) into (fabs (- (/ 1 y) (/ 1 x)))
0.065 * [backup-simplify]: Simplify (sqrt (fabs (- (/ 1 y) (/ 1 x)))) into (sqrt (fabs (- (/ 1 y) (/ 1 x))))
0.065 * [backup-simplify]: Simplify (/ 0 (* 2 (sqrt (fabs (- (/ 1 y) (/ 1 x)))))) into 0
0.065 * [backup-simplify]: Simplify (sqrt (fabs (- (/ 1 y) (/ 1 x)))) into (sqrt (fabs (- (/ 1 y) (/ 1 x))))
0.065 * [taylor]: Taking taylor expansion of 0 in y
0.065 * [backup-simplify]: Simplify 0 into 0
0.065 * [backup-simplify]: Simplify 0 into 0
0.065 * [backup-simplify]: Simplify 0 into 0
0.066 * [backup-simplify]: Simplify (/ (- 0 (pow 0 2) (+)) (* 2 (sqrt (fabs (- (/ 1 y) (/ 1 x)))))) into 0
0.066 * [taylor]: Taking taylor expansion of 0 in y
0.066 * [backup-simplify]: Simplify 0 into 0
0.066 * [backup-simplify]: Simplify 0 into 0
0.066 * [backup-simplify]: Simplify 0 into 0
0.067 * [backup-simplify]: Simplify (/ (- 0 (pow 0 2) (+)) (* 2 (sqrt (fabs (- (/ 1 y) (/ 1 x)))))) into 0
0.067 * [backup-simplify]: Simplify 0 into 0
0.068 * [backup-simplify]: Simplify (/ (- 0 (+ (* 2 (* 0 0)))) (* 2 (sqrt (fabs (- (/ 1 y) (/ 1 x)))))) into 0
0.068 * [taylor]: Taking taylor expansion of 0 in y
0.068 * [backup-simplify]: Simplify 0 into 0
0.068 * [backup-simplify]: Simplify 0 into 0
0.068 * [backup-simplify]: Simplify (sqrt (fabs (- (/ 1 (/ 1 (- y))) (/ 1 (/ 1 (- x)))))) into (sqrt (fabs (- x y)))
0.068 * * * [progress]: simplifying candidates
0.069 * [simplify]: Simplifying:
  (expm1 (sqrt (fabs (- x y))))
  (log1p (sqrt (fabs (- x y))))
  (log (sqrt (fabs (- x y))))
  (exp (sqrt (fabs (- x y))))
  (* (cbrt (sqrt (fabs (- x y)))) (cbrt (sqrt (fabs (- x y)))))
  (cbrt (sqrt (fabs (- x y))))
  (* (* (sqrt (fabs (- x y))) (sqrt (fabs (- x y)))) (sqrt (fabs (- x y))))
  (sqrt (* (cbrt (fabs (- x y))) (cbrt (fabs (- x y)))))
  (sqrt (cbrt (fabs (- x y))))
  (sqrt (sqrt (fabs (- x y))))
  (sqrt (sqrt (fabs (- x y))))
  (sqrt 1)
  (sqrt (fabs (- x y)))
  (/ 1 2)
  (sqrt (sqrt (fabs (- x y))))
  (sqrt (sqrt (fabs (- x y))))
  (sqrt (fabs (- x y)))
  (sqrt (fabs (- x y)))
  (sqrt (fabs (- x y)))
0.069 * * [simplify]: Extracting # 0 : cost  0
0.069 * * [simplify]: Extracting # 1 : cost  0
0.069 * * [simplify]: Extracting # 2 : cost  0
0.070 * * [simplify]: Extracting # 3 : cost  0
0.070 * * [simplify]: Extracting # 4 : cost  0
0.070 * * [simplify]: Extracting # 5 : cost  0
0.070 * * [simplify]: Extracting # 6 : cost  0
0.070 * * [simplify]: Extracting # 7 : cost  0
0.070 * * [simplify]: iteration  0 :  22  enodes  (cost  127 )
0.076 * * [simplify]: Extracting # 0 : cost  0
0.076 * * [simplify]: Extracting # 1 : cost  0
0.077 * * [simplify]: Extracting # 2 : cost  0
0.077 * * [simplify]: iteration  1 :  29  enodes  (cost  111 )
0.082 * * [simplify]: Extracting # 0 : cost  0
0.082 * * [simplify]: Extracting # 1 : cost  0
0.082 * * [simplify]: Extracting # 2 : cost  0
0.082 * * [simplify]: Extracting # 3 : cost  0
0.083 * * [simplify]: iteration  2 :  33  enodes  (cost  108 )
0.090 * * [simplify]: Extracting # 0 : cost  0
0.090 * * [simplify]: Extracting # 1 : cost  0
0.090 * * [simplify]: Extracting # 2 : cost  0
0.090 * * [simplify]: Extracting # 3 : cost  0
0.090 * * [simplify]: iteration  3 :  37  enodes  (cost  108 )
0.099 * * [simplify]: Extracting # 0 : cost  0
0.099 * * [simplify]: Extracting # 1 : cost  0
0.099 * * [simplify]: Extracting # 2 : cost  0
0.099 * * [simplify]: Extracting # 3 : cost  0
0.099 * * [simplify]: Extracting # 4 : cost  0
0.099 * * [simplify]: iteration  4 :  43  enodes  (cost  108 )
0.109 * * [simplify]: Extracting # 0 : cost  0
0.109 * * [simplify]: Extracting # 1 : cost  0
0.109 * * [simplify]: Extracting # 2 : cost  0
0.109 * * [simplify]: Extracting # 3 : cost  0
0.109 * * [simplify]: Extracting # 4 : cost  0
0.109 * * [simplify]: iteration  5 :  53  enodes  (cost  108 )
0.117 * * [simplify]: Extracting # 0 : cost  0
0.117 * * [simplify]: Extracting # 1 : cost  0
0.117 * * [simplify]: Extracting # 2 : cost  0
0.117 * * [simplify]: Extracting # 3 : cost  0
0.117 * * [simplify]: Extracting # 4 : cost  0
0.117 * * [simplify]: iteration  6 :  74  enodes  (cost  108 )
0.132 * * [simplify]: Extracting # 0 : cost  0
0.132 * * [simplify]: Extracting # 1 : cost  0
0.132 * * [simplify]: Extracting # 2 : cost  0
0.138 * * [simplify]: Extracting # 3 : cost  0
0.138 * * [simplify]: iteration  7 :  139  enodes  (cost  108 )
0.227 * * [simplify]: Extracting # 0 : cost  0
0.227 * * [simplify]: Extracting # 1 : cost  0
0.228 * * [simplify]: Extracting # 2 : cost  0
0.228 * * [simplify]: Extracting # 3 : cost  0
0.228 * * [simplify]: iteration  8 :  431  enodes  (cost  108 )
1.058 * * [simplify]: Extracting # 0 : cost  0
1.059 * * [simplify]: Extracting # 1 : cost  0
1.060 * * [simplify]: Extracting # 2 : cost  0
1.061 * * [simplify]: Extracting # 3 : cost  0
1.063 * * [simplify]: Extracting # 4 : cost  0
1.065 * * [simplify]: iteration  9 :  1844  enodes  (cost  108 )
2.075 * * [simplify]: Extracting # 0 : cost  0
2.086 * * [simplify]: Extracting # 1 : cost  0
2.096 * * [simplify]: Extracting # 2 : cost  0
2.102 * * [simplify]: Extracting # 3 : cost  0
2.107 * * [simplify]: iteration done:  5000  enodes  (cost  108 )
2.107 * [simplify]: Simplified to:
  (expm1 (sqrt (fabs (- x y))))
  (log1p (sqrt (fabs (- x y))))
  (log (sqrt (fabs (- x y))))
  (exp (sqrt (fabs (- x y))))
  (* (cbrt (sqrt (fabs (- x y)))) (cbrt (sqrt (fabs (- x y)))))
  (cbrt (sqrt (fabs (- x y))))
  (pow (sqrt (fabs (- x y))) 3)
  (fabs (cbrt (fabs (- x y))))
  (sqrt (cbrt (fabs (- x y))))
  (sqrt (sqrt (fabs (- x y))))
  (sqrt (sqrt (fabs (- x y))))
  1
  (sqrt (fabs (- x y)))
  1/2
  (sqrt (sqrt (fabs (- x y))))
  (sqrt (sqrt (fabs (- x y))))
  (sqrt (fabs (- x y)))
  (sqrt (fabs (- x y)))
  (sqrt (fabs (- x y)))
2.108 * * * [progress]: adding candidates to table
2.152 * [progress]: [Phase 3 of 3] Extracting.
2.154 * [simplify]: Simplifying:
  (sqrt (fabs (- x y)))
2.155 * * [simplify]: Extracting # 0 : cost  0
2.155 * * [simplify]: Extracting # 1 : cost  0
2.155 * * [simplify]: Extracting # 2 : cost  0
2.155 * * [simplify]: Extracting # 3 : cost  0
2.155 * * [simplify]: Extracting # 4 : cost  0
2.155 * * [simplify]: Extracting # 5 : cost  0
2.155 * * [simplify]: iteration  0 :  5  enodes  (cost  5 )
2.155 * * [simplify]: Extracting # 0 : cost  0
2.155 * * [simplify]: iteration done:  5  enodes  (cost  5 )
2.155 * [simplify]: Simplified to:
  (sqrt (fabs (- x y)))
3.101 * [regime-testing]: Baseline error score: 0.008876109513689211
3.103 * [regime-testing]: Oracle error score: 0.008876109513689211
3.103 * [regime-testing]: End program error score: 0.008876109513689211