2.368 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.011 * * * [progress]: [2/2] Setting up program.
0.013 * [progress]: [Phase 2 of 3] Improving.
0.013 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (+ x (/ (- y x) 2.0))
0.014 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.015 * * [simplify]: iteration  1 :  12  enodes  (cost  7 )
0.016 * * [simplify]: iteration  2 :  19  enodes  (cost  7 )
0.019 * * [simplify]: iteration  3 :  28  enodes  (cost  7 )
0.025 * * [simplify]: iteration  4 :  38  enodes  (cost  7 )
0.029 * * [simplify]: iteration  5 :  49  enodes  (cost  7 )
0.035 * * [simplify]: iteration  6 :  64  enodes  (cost  7 )
0.042 * * [simplify]: iteration  7 :  73  enodes  (cost  7 )
0.050 * * [simplify]: iteration  8 :  89  enodes  (cost  7 )
0.061 * * [simplify]: iteration  9 :  110  enodes  (cost  7 )
0.077 * * [simplify]: iteration  10 :  136  enodes  (cost  7 )
0.094 * * [simplify]: iteration  11 :  144  enodes  (cost  7 )
0.113 * * [simplify]: iteration  done :  144  enodes  (cost  7 )
0.113 * [simplify]: Simplified to:
   (+ x (/ (- y x) 2.0))
0.113 * * [progress]: iteration 1 / 4
0.113 * * * [progress]: picking best candidate
0.115 * * * * [pick]: Picked  #<alt (λ (x y) (+ x (/ (- y x) 2.0)))>
0.115 * * * [progress]: localizing error
0.120 * * * [progress]: generating rewritten candidates
0.120 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.135 * * * [progress]: generating series expansions
0.135 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.135 * [approximate]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in (x y) around 0
0.135 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in y
0.135 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
0.135 * [taylor]: Taking taylor expansion of 0.5 in y
0.135 * [taylor]: Taking taylor expansion of x in y
0.135 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.135 * [taylor]: Taking taylor expansion of 0.5 in y
0.135 * [taylor]: Taking taylor expansion of y in y
0.135 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
0.135 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.135 * [taylor]: Taking taylor expansion of 0.5 in x
0.135 * [taylor]: Taking taylor expansion of x in x
0.135 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.135 * [taylor]: Taking taylor expansion of 0.5 in x
0.135 * [taylor]: Taking taylor expansion of y in x
0.135 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
0.135 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.135 * [taylor]: Taking taylor expansion of 0.5 in x
0.135 * [taylor]: Taking taylor expansion of x in x
0.135 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.135 * [taylor]: Taking taylor expansion of 0.5 in x
0.135 * [taylor]: Taking taylor expansion of y in x
0.136 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.136 * [taylor]: Taking taylor expansion of 0.5 in y
0.136 * [taylor]: Taking taylor expansion of y in y
0.138 * [taylor]: Taking taylor expansion of 0.5 in y
0.140 * [taylor]: Taking taylor expansion of 0 in y
0.142 * [taylor]: Taking taylor expansion of 0 in y
0.142 * [approximate]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in (x y) around 0
0.142 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
0.142 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.142 * [taylor]: Taking taylor expansion of 0.5 in y
0.142 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.142 * [taylor]: Taking taylor expansion of y in y
0.143 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
0.143 * [taylor]: Taking taylor expansion of 0.5 in y
0.143 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.143 * [taylor]: Taking taylor expansion of x in y
0.143 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.143 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.143 * [taylor]: Taking taylor expansion of 0.5 in x
0.143 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.143 * [taylor]: Taking taylor expansion of y in x
0.143 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.143 * [taylor]: Taking taylor expansion of 0.5 in x
0.143 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.143 * [taylor]: Taking taylor expansion of x in x
0.143 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.143 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.143 * [taylor]: Taking taylor expansion of 0.5 in x
0.143 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.143 * [taylor]: Taking taylor expansion of y in x
0.143 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.143 * [taylor]: Taking taylor expansion of 0.5 in x
0.143 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.143 * [taylor]: Taking taylor expansion of x in x
0.144 * [taylor]: Taking taylor expansion of 0.5 in y
0.145 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.145 * [taylor]: Taking taylor expansion of 0.5 in y
0.145 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.145 * [taylor]: Taking taylor expansion of y in y
0.147 * [taylor]: Taking taylor expansion of 0 in y
0.150 * [taylor]: Taking taylor expansion of 0 in y
0.153 * [taylor]: Taking taylor expansion of 0 in y
0.153 * [approximate]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in (x y) around 0
0.154 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in y
0.154 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
0.154 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.154 * [taylor]: Taking taylor expansion of 0.5 in y
0.154 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.154 * [taylor]: Taking taylor expansion of y in y
0.154 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
0.154 * [taylor]: Taking taylor expansion of 0.5 in y
0.154 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.154 * [taylor]: Taking taylor expansion of x in y
0.154 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in x
0.154 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.154 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.154 * [taylor]: Taking taylor expansion of 0.5 in x
0.154 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.154 * [taylor]: Taking taylor expansion of y in x
0.154 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.154 * [taylor]: Taking taylor expansion of 0.5 in x
0.154 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.154 * [taylor]: Taking taylor expansion of x in x
0.154 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in x
0.154 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.154 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.155 * [taylor]: Taking taylor expansion of 0.5 in x
0.155 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.155 * [taylor]: Taking taylor expansion of y in x
0.155 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.155 * [taylor]: Taking taylor expansion of 0.5 in x
0.155 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.155 * [taylor]: Taking taylor expansion of x in x
0.156 * [taylor]: Taking taylor expansion of (- 0.5) in y
0.156 * [taylor]: Taking taylor expansion of 0.5 in y
0.157 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y))) in y
0.157 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.157 * [taylor]: Taking taylor expansion of 0.5 in y
0.157 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.157 * [taylor]: Taking taylor expansion of y in y
0.160 * [taylor]: Taking taylor expansion of 0 in y
0.163 * [taylor]: Taking taylor expansion of 0 in y
0.167 * [taylor]: Taking taylor expansion of 0 in y
0.168 * * * [progress]: simplifying candidates
0.169 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (expm1 (+ x (/ (- y x) 2.0)))
  (log1p (+ x (/ (- y x) 2.0)))
  (* (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))
0.170 * * [simplify]: iteration  0 :  35  enodes  (cost  194 )
0.176 * * [simplify]: iteration  1 :  98  enodes  (cost  180 )
0.192 * * [simplify]: iteration  2 :  233  enodes  (cost  166 )
0.236 * * [simplify]: iteration  3 :  700  enodes  (cost  166 )
0.423 * * [simplify]: iteration  4 :  2938  enodes  (cost  165 )
1.117 * * [simplify]: iteration  done :  5000  enodes  (cost  165 )
1.118 * [simplify]: Simplified to:
   (expm1 (+ x (/ (- y x) 2.0)))
  (log1p (+ x (/ (- y x) 2.0)))
  (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))
  (fma x x (* (/ (- y x) 2.0) (- (/ (- y x) 2.0) x)))
  (fma (/ (- x y) 2.0) (/ (- y x) 2.0) (* x x))
  (- 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))
1.118 * * * [progress]: adding candidates to table
1.160 * * [progress]: iteration 2 / 4
1.160 * * * [progress]: picking best candidate
1.161 * * * * [pick]: Picked  #<alt (λ (x y) (* 0.5 (+ x y)))>
1.161 * * * [progress]: localizing error
1.164 * * * [progress]: generating rewritten candidates
1.164 * * * [progress]: generating series expansions
1.164 * * * [progress]: simplifying candidates
1.165 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
1.166 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
1.166 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
1.166 * [simplify]: Simplified to:
   
1.166 * * * [progress]: adding candidates to table
1.166 * [progress]: [Phase 3 of 3] Extracting.
1.167 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* 0.5 (+ x y))
1.167 * * [simplify]: iteration  0 :  5  enodes  (cost  5 )
1.168 * * [simplify]: iteration  1 :  7  enodes  (cost  5 )
1.168 * * [simplify]: iteration  done :  7  enodes  (cost  5 )
1.168 * [simplify]: Simplified to:
   (* 0.5 (+ x y))
1.498 * [regime-testing]: End program error score: 0
1.515 * [regime-testing]: Target error score: 0