25.483 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.011 * * * [progress]: [2/2] Setting up program.
0.012 * [progress]: [Phase 2 of 3] Improving.
0.012 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (+ x (/ (- y x) 2.0))
0.013 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.014 * * [simplify]: iteration  1 :  12  enodes  (cost  7 )
0.015 * * [simplify]: iteration  2 :  19  enodes  (cost  7 )
0.017 * * [simplify]: iteration  3 :  28  enodes  (cost  7 )
0.020 * * [simplify]: iteration  4 :  38  enodes  (cost  7 )
0.024 * * [simplify]: iteration  5 :  49  enodes  (cost  7 )
0.029 * * [simplify]: iteration  6 :  64  enodes  (cost  7 )
0.036 * * [simplify]: iteration  7 :  73  enodes  (cost  7 )
0.044 * * [simplify]: iteration  8 :  89  enodes  (cost  7 )
0.056 * * [simplify]: iteration  9 :  110  enodes  (cost  7 )
0.070 * * [simplify]: iteration  10 :  136  enodes  (cost  7 )
0.087 * * [simplify]: iteration  11 :  144  enodes  (cost  7 )
0.106 * * [simplify]: iteration  done :  144  enodes  (cost  7 )
0.106 * [simplify]: Simplified to:
   (+ x (/ (- y x) 2.0))
0.107 * * [progress]: iteration 1 / 4
0.107 * * * [progress]: picking best candidate
0.108 * * * * [pick]: Picked  #<alt (λ (x y) (+ x (/ (- y x) 2.0)))>
0.108 * * * [progress]: localizing error
0.113 * * * [progress]: generating rewritten candidates
0.113 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.127 * * * [progress]: generating series expansions
0.127 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.127 * [approximate]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in (x y) around 0
0.127 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in y
0.127 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
0.127 * [taylor]: Taking taylor expansion of 0.5 in y
0.127 * [taylor]: Taking taylor expansion of x in y
0.127 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.127 * [taylor]: Taking taylor expansion of 0.5 in y
0.127 * [taylor]: Taking taylor expansion of y in y
0.127 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
0.127 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.127 * [taylor]: Taking taylor expansion of 0.5 in x
0.127 * [taylor]: Taking taylor expansion of x in x
0.127 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.127 * [taylor]: Taking taylor expansion of 0.5 in x
0.127 * [taylor]: Taking taylor expansion of y in x
0.127 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
0.127 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.127 * [taylor]: Taking taylor expansion of 0.5 in x
0.127 * [taylor]: Taking taylor expansion of x in x
0.127 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.127 * [taylor]: Taking taylor expansion of 0.5 in x
0.127 * [taylor]: Taking taylor expansion of y in x
0.128 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.128 * [taylor]: Taking taylor expansion of 0.5 in y
0.128 * [taylor]: Taking taylor expansion of y in y
0.130 * [taylor]: Taking taylor expansion of 0.5 in y
0.132 * [taylor]: Taking taylor expansion of 0 in y
0.134 * [taylor]: Taking taylor expansion of 0 in y
0.134 * [approximate]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in (x y) around 0
0.134 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
0.134 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.134 * [taylor]: Taking taylor expansion of 0.5 in y
0.134 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.134 * [taylor]: Taking taylor expansion of y in y
0.135 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
0.135 * [taylor]: Taking taylor expansion of 0.5 in y
0.135 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.135 * [taylor]: Taking taylor expansion of x in y
0.135 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.135 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.135 * [taylor]: Taking taylor expansion of 0.5 in x
0.135 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.135 * [taylor]: Taking taylor expansion of y in x
0.135 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.135 * [taylor]: Taking taylor expansion of 0.5 in x
0.135 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.135 * [taylor]: Taking taylor expansion of x in x
0.135 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.135 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.135 * [taylor]: Taking taylor expansion of 0.5 in x
0.135 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.135 * [taylor]: Taking taylor expansion of y in x
0.135 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.135 * [taylor]: Taking taylor expansion of 0.5 in x
0.135 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.135 * [taylor]: Taking taylor expansion of x in x
0.136 * [taylor]: Taking taylor expansion of 0.5 in y
0.137 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.137 * [taylor]: Taking taylor expansion of 0.5 in y
0.137 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.137 * [taylor]: Taking taylor expansion of y in y
0.139 * [taylor]: Taking taylor expansion of 0 in y
0.142 * [taylor]: Taking taylor expansion of 0 in y
0.145 * [taylor]: Taking taylor expansion of 0 in y
0.146 * [approximate]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in (x y) around 0
0.146 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in y
0.146 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
0.146 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.146 * [taylor]: Taking taylor expansion of 0.5 in y
0.146 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.146 * [taylor]: Taking taylor expansion of y in y
0.146 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
0.146 * [taylor]: Taking taylor expansion of 0.5 in y
0.146 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.146 * [taylor]: Taking taylor expansion of x in y
0.146 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in x
0.146 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.146 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.146 * [taylor]: Taking taylor expansion of 0.5 in x
0.146 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.146 * [taylor]: Taking taylor expansion of y in x
0.146 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.146 * [taylor]: Taking taylor expansion of 0.5 in x
0.146 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.146 * [taylor]: Taking taylor expansion of x in x
0.147 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in x
0.147 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.147 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.147 * [taylor]: Taking taylor expansion of 0.5 in x
0.147 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.147 * [taylor]: Taking taylor expansion of y in x
0.147 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.147 * [taylor]: Taking taylor expansion of 0.5 in x
0.147 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.147 * [taylor]: Taking taylor expansion of x in x
0.148 * [taylor]: Taking taylor expansion of (- 0.5) in y
0.148 * [taylor]: Taking taylor expansion of 0.5 in y
0.149 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y))) in y
0.149 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.149 * [taylor]: Taking taylor expansion of 0.5 in y
0.149 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.149 * [taylor]: Taking taylor expansion of y in y
0.152 * [taylor]: Taking taylor expansion of 0 in y
0.155 * [taylor]: Taking taylor expansion of 0 in y
0.159 * [taylor]: Taking taylor expansion of 0 in y
0.160 * * * [progress]: simplifying candidates
0.161 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (exp x) (exp (/ (- y x) 2.0)))
  (log (+ x (/ (- y x) 2.0)))
  (exp (+ x (/ (- y x) 2.0)))
  (* (cbrt (+ x (/ (- y x) 2.0))) (cbrt (+ x (/ (- y x) 2.0))))
  (cbrt (+ x (/ (- y x) 2.0)))
  (* (* (+ x (/ (- y x) 2.0)) (+ x (/ (- y x) 2.0))) (+ x (/ (- y x) 2.0)))
  (sqrt (+ x (/ (- y x) 2.0)))
  (sqrt (+ x (/ (- y x) 2.0)))
  (+ (pow x 3) (pow (/ (- y x) 2.0) 3))
  (+ (* x x) (- (* (/ (- y x) 2.0) (/ (- y x) 2.0)) (* x (/ (- y x) 2.0))))
  (- (* x x) (* (/ (- y x) 2.0) (/ (- y x) 2.0)))
  (- x (/ (- y x) 2.0))
  (+ x (/ (- y x) 2.0))
  (+ x (/ y 2.0))
  (+ (* 0.5 x) (* 0.5 y))
  (+ (* 0.5 x) (* 0.5 y))
  (+ (* 0.5 x) (* 0.5 y))
0.162 * * [simplify]: iteration  0 :  33  enodes  (cost  178 )
0.168 * * [simplify]: iteration  1 :  92  enodes  (cost  165 )
0.186 * * [simplify]: iteration  2 :  213  enodes  (cost  151 )
0.230 * * [simplify]: iteration  3 :  641  enodes  (cost  151 )
0.402 * * [simplify]: iteration  4 :  2589  enodes  (cost  151 )
1.037 * * [simplify]: iteration  done :  5001  enodes  (cost  151 )
1.038 * [simplify]: Simplified to:
   (exp (+ x (/ (- y x) 2.0)))
  (log (+ x (/ (- y x) 2.0)))
  (exp (+ x (/ (- y x) 2.0)))
  (* (cbrt (+ x (/ (- y x) 2.0))) (cbrt (+ x (/ (- y x) 2.0))))
  (cbrt (+ x (/ (- y x) 2.0)))
  (pow (+ x (/ (- y x) 2.0)) 3)
  (sqrt (+ x (/ (- y x) 2.0)))
  (sqrt (+ x (/ (- y x) 2.0)))
  (+ (pow x 3) (pow (/ (- y x) 2.0) 3))
  (+ (* x x) (* (/ (- y x) 2.0) (- (/ (- y x) 2.0) x)))
  (- (* x x) (* (/ (- y x) 2.0) (/ (- y x) 2.0)))
  (- x (/ (- y x) 2.0))
  (+ x (/ (- y x) 2.0))
  (+ x (/ y 2.0))
  (* 0.5 (+ x y))
  (* 0.5 (+ x y))
  (* 0.5 (+ x y))
1.038 * * * [progress]: adding candidates to table
1.066 * * [progress]: iteration 2 / 4
1.066 * * * [progress]: picking best candidate
1.067 * * * * [pick]: Picked  #<alt (λ (x y) (* 0.5 (+ x y)))>
1.067 * * * [progress]: localizing error
1.071 * * * [progress]: generating rewritten candidates
1.071 * * * [progress]: generating series expansions
1.071 * * * [progress]: simplifying candidates
1.071 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
1.072 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
1.072 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
1.072 * [simplify]: Simplified to:
   
1.072 * * * [progress]: adding candidates to table
1.072 * [progress]: [Phase 3 of 3] Extracting.
1.073 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* 0.5 (+ x y))
1.074 * * [simplify]: iteration  0 :  5  enodes  (cost  5 )
1.074 * * [simplify]: iteration  1 :  7  enodes  (cost  5 )
1.074 * * [simplify]: iteration  done :  7  enodes  (cost  5 )
1.074 * [simplify]: Simplified to:
   (* 0.5 (+ x y))
1.396 * [regime-testing]: End program error score: 0
1.415 * [regime-testing]: Target error score: 0