13.259 * [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 using  #<procedure:simplify-batch-regraph> :
   (+ x (/ (- y x) 2.0))
0.016 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.017 * * [simplify]: iteration  1 :  12  enodes  (cost  7 )
0.018 * * [simplify]: iteration  2 :  19  enodes  (cost  7 )
0.020 * * [simplify]: iteration  3 :  28  enodes  (cost  7 )
0.024 * * [simplify]: iteration  4 :  38  enodes  (cost  7 )
0.029 * * [simplify]: iteration  5 :  47  enodes  (cost  7 )
0.038 * * [simplify]: iteration  6 :  52  enodes  (cost  7 )
0.043 * * [simplify]: iteration  7 :  61  enodes  (cost  7 )
0.050 * * [simplify]: iteration  8 :  78  enodes  (cost  7 )
0.061 * * [simplify]: iteration  9 :  97  enodes  (cost  7 )
0.071 * * [simplify]: iteration  10 :  108  enodes  (cost  7 )
0.083 * * [simplify]: iteration  11 :  110  enodes  (cost  7 )
0.098 * * [simplify]: iteration  12 :  114  enodes  (cost  7 )
0.110 * * [simplify]: iteration  13 :  117  enodes  (cost  7 )
0.123 * * [simplify]: iteration  done :  117  enodes  (cost  7 )
0.123 * [simplify]: Simplified to:
   (+ x (/ (- y x) 2.0))
0.123 * * [progress]: iteration 1 / 4
0.123 * * * [progress]: picking best candidate
0.125 * * * * [pick]: Picked  #<alt (λ (x y) (+ x (/ (- y x) 2.0)))>
0.125 * * * [progress]: localizing error
0.130 * * * [progress]: generating rewritten candidates
0.130 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.140 * * * [progress]: generating series expansions
0.140 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.140 * [approximate]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in (x y) around 0
0.140 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in y
0.140 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
0.140 * [taylor]: Taking taylor expansion of 0.5 in y
0.140 * [taylor]: Taking taylor expansion of x in y
0.140 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.140 * [taylor]: Taking taylor expansion of 0.5 in y
0.140 * [taylor]: Taking taylor expansion of y in y
0.140 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
0.140 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.140 * [taylor]: Taking taylor expansion of 0.5 in x
0.140 * [taylor]: Taking taylor expansion of x in x
0.140 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.140 * [taylor]: Taking taylor expansion of 0.5 in x
0.140 * [taylor]: Taking taylor expansion of y in x
0.140 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
0.140 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.140 * [taylor]: Taking taylor expansion of 0.5 in x
0.140 * [taylor]: Taking taylor expansion of x in x
0.140 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.140 * [taylor]: Taking taylor expansion of 0.5 in x
0.140 * [taylor]: Taking taylor expansion of y in x
0.140 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.140 * [taylor]: Taking taylor expansion of 0.5 in y
0.140 * [taylor]: Taking taylor expansion of y in y
0.140 * [taylor]: Taking taylor expansion of 0.5 in y
0.140 * [taylor]: Taking taylor expansion of 0 in y
0.141 * [taylor]: Taking taylor expansion of 0 in y
0.141 * [approximate]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in (x y) around 0
0.141 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in y
0.141 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
0.141 * [taylor]: Taking taylor expansion of 0.5 in y
0.141 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.141 * [taylor]: Taking taylor expansion of x in y
0.141 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.141 * [taylor]: Taking taylor expansion of 0.5 in y
0.141 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.141 * [taylor]: Taking taylor expansion of y in y
0.141 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
0.141 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.141 * [taylor]: Taking taylor expansion of 0.5 in x
0.141 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.141 * [taylor]: Taking taylor expansion of x in x
0.141 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.141 * [taylor]: Taking taylor expansion of 0.5 in x
0.141 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.141 * [taylor]: Taking taylor expansion of y in x
0.141 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y))) in x
0.141 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.141 * [taylor]: Taking taylor expansion of 0.5 in x
0.141 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.141 * [taylor]: Taking taylor expansion of x in x
0.141 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.141 * [taylor]: Taking taylor expansion of 0.5 in x
0.141 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.141 * [taylor]: Taking taylor expansion of y in x
0.142 * [taylor]: Taking taylor expansion of 0.5 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
0.142 * [taylor]: Taking taylor expansion of 0 in y
0.142 * [taylor]: Taking taylor expansion of 0 in y
0.143 * [taylor]: Taking taylor expansion of 0 in y
0.143 * [approximate]: Taking taylor expansion of (neg (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in (x y) around 0
0.143 * [taylor]: Taking taylor expansion of (neg (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in y
0.143 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 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)) in y
0.143 * [taylor]: Taking taylor expansion of 0.5 in y
0.143 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.143 * [taylor]: Taking taylor expansion of y in y
0.143 * [taylor]: Taking taylor expansion of (neg (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in x
0.143 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 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)) 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 (neg (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 y)))) in x
0.143 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) (* 0.5 (/ 1 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)) 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
0.144 * [taylor]: Taking taylor expansion of (neg 0.5) in y
0.144 * [taylor]: Taking taylor expansion of 0.5 in y
0.144 * [taylor]: Taking taylor expansion of (neg (* 0.5 (/ 1 y))) in y
0.144 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.144 * [taylor]: Taking taylor expansion of 0.5 in y
0.144 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.144 * [taylor]: Taking taylor expansion of y in y
0.144 * [taylor]: Taking taylor expansion of 0 in y
0.144 * [taylor]: Taking taylor expansion of 0 in y
0.145 * [taylor]: Taking taylor expansion of 0 in y
0.145 * * * [progress]: simplifying candidates
0.145 * [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))
0.146 * * [simplify]: iteration  0 :  33  enodes  (cost  178 )
0.154 * * [simplify]: iteration  1 :  92  enodes  (cost  165 )
0.168 * * [simplify]: iteration  2 :  212  enodes  (cost  151 )
0.213 * * [simplify]: iteration  3 :  614  enodes  (cost  151 )
0.708 * * [simplify]: iteration  4 :  2451  enodes  (cost  151 )
1.560 * * [simplify]: iteration  done :  5001  enodes  (cost  151 )
1.560 * [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))
1.560 * * * [progress]: adding candidates to table
1.578 * * [progress]: iteration 2 / 4
1.578 * * * [progress]: picking best candidate
1.580 * * * * [pick]: Picked  #<alt (λ (x y) (* 0.5 (+ x y)))>
1.580 * * * [progress]: localizing error
1.584 * * * [progress]: generating rewritten candidates
1.584 * * * [progress]: generating series expansions
1.584 * * * [progress]: simplifying candidates
1.584 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
1.584 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
1.584 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
1.584 * [simplify]: Simplified to:
   
1.584 * * * [progress]: adding candidates to table
1.585 * [progress]: [Phase 3 of 3] Extracting.
1.587 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* 0.5 (+ x y))
1.587 * * [simplify]: iteration  0 :  5  enodes  (cost  5 )
1.588 * * [simplify]: iteration  1 :  7  enodes  (cost  5 )
1.588 * * [simplify]: iteration  done :  7  enodes  (cost  5 )
1.588 * [simplify]: Simplified to:
   (* 0.5 (+ x y))
2.175 * [regime-testing]: End program error score: 0
2.238 * [regime-testing]: Target error score: 0