3.696 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.012 * * * [progress]: [2/2] Setting up program.
0.014 * [progress]: [Phase 2 of 3] Improving.
0.014 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (+ x (/ (- y x) 2.0))
0.014 * [simplify]: Sending expressions to egg_math:
 (+ h0 (/ (- h1 h0) h2))
0.017 * * [simplify]: iteration  0 :  12  enodes  (cost  3 )
0.020 * * [simplify]: iteration  1 :  19  enodes  (cost  3 )
0.023 * * [simplify]: iteration  2 :  28  enodes  (cost  3 )
0.026 * * [simplify]: iteration  3 :  40  enodes  (cost  3 )
0.029 * * [simplify]: iteration  4 :  50  enodes  (cost  3 )
0.031 * * [simplify]: iteration  5 :  73  enodes  (cost  3 )
0.034 * * [simplify]: iteration  6 :  102  enodes  (cost  3 )
0.037 * * [simplify]: iteration  7 :  118  enodes  (cost  3 )
0.040 * * [simplify]: iteration  8 :  145  enodes  (cost  3 )
0.043 * * [simplify]: iteration  9 :  174  enodes  (cost  3 )
0.046 * * [simplify]: iteration  10 :  190  enodes  (cost  3 )
0.050 * * [simplify]: iteration  11 :  190  enodes  (cost  3 )
0.050 * [simplify]: Simplified to:
   (+ x (/ (- y x) 2.0))
0.050 * * [progress]: iteration 1 / 4
0.050 * * * [progress]: picking best candidate
0.052 * * * * [pick]: Picked  #<alt (λ (x y) (+ x (/ (- y x) 2.0)))>
0.052 * * * [progress]: localizing error
0.057 * * * [progress]: generating rewritten candidates
0.057 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.084 * * * [progress]: generating series expansions
0.084 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.084 * [approximate]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in (x y) around 0
0.084 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in y
0.084 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
0.084 * [taylor]: Taking taylor expansion of 0.5 in y
0.084 * [taylor]: Taking taylor expansion of x in y
0.084 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.084 * [taylor]: Taking taylor expansion of 0.5 in y
0.084 * [taylor]: Taking taylor expansion of y in y
0.084 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
0.084 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.084 * [taylor]: Taking taylor expansion of 0.5 in x
0.084 * [taylor]: Taking taylor expansion of x in x
0.084 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.084 * [taylor]: Taking taylor expansion of 0.5 in x
0.084 * [taylor]: Taking taylor expansion of y in x
0.085 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
0.085 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.085 * [taylor]: Taking taylor expansion of 0.5 in x
0.085 * [taylor]: Taking taylor expansion of x in x
0.085 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.085 * [taylor]: Taking taylor expansion of 0.5 in x
0.085 * [taylor]: Taking taylor expansion of y in x
0.085 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.085 * [taylor]: Taking taylor expansion of 0.5 in y
0.085 * [taylor]: Taking taylor expansion of y in y
0.087 * [taylor]: Taking taylor expansion of 0.5 in y
0.090 * [taylor]: Taking taylor expansion of 0 in y
0.093 * [taylor]: Taking taylor expansion of 0 in y
0.093 * [approximate]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in (x y) around 0
0.093 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
0.093 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.093 * [taylor]: Taking taylor expansion of 0.5 in y
0.093 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.093 * [taylor]: Taking taylor expansion of y in y
0.093 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
0.093 * [taylor]: Taking taylor expansion of 0.5 in y
0.093 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.093 * [taylor]: Taking taylor expansion of x in y
0.094 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.094 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.094 * [taylor]: Taking taylor expansion of 0.5 in x
0.094 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.094 * [taylor]: Taking taylor expansion of y in x
0.094 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.094 * [taylor]: Taking taylor expansion of 0.5 in x
0.094 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.094 * [taylor]: Taking taylor expansion of x in x
0.094 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.094 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.094 * [taylor]: Taking taylor expansion of 0.5 in x
0.094 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.094 * [taylor]: Taking taylor expansion of y in x
0.094 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.094 * [taylor]: Taking taylor expansion of 0.5 in x
0.094 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.094 * [taylor]: Taking taylor expansion of x in x
0.095 * [taylor]: Taking taylor expansion of 0.5 in y
0.096 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.096 * [taylor]: Taking taylor expansion of 0.5 in y
0.096 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.096 * [taylor]: Taking taylor expansion of y in y
0.098 * [taylor]: Taking taylor expansion of 0 in y
0.101 * [taylor]: Taking taylor expansion of 0 in y
0.105 * [taylor]: Taking taylor expansion of 0 in y
0.105 * [approximate]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in (x y) around 0
0.105 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in y
0.105 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
0.105 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.106 * [taylor]: Taking taylor expansion of 0.5 in y
0.106 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.106 * [taylor]: Taking taylor expansion of y in y
0.106 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
0.106 * [taylor]: Taking taylor expansion of 0.5 in y
0.106 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.106 * [taylor]: Taking taylor expansion of x in y
0.106 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in x
0.106 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.106 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.106 * [taylor]: Taking taylor expansion of 0.5 in x
0.106 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.106 * [taylor]: Taking taylor expansion of y in x
0.106 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.106 * [taylor]: Taking taylor expansion of 0.5 in x
0.106 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.106 * [taylor]: Taking taylor expansion of x in x
0.107 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in x
0.107 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.107 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.107 * [taylor]: Taking taylor expansion of 0.5 in x
0.107 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.107 * [taylor]: Taking taylor expansion of y in x
0.107 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.107 * [taylor]: Taking taylor expansion of 0.5 in x
0.107 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.107 * [taylor]: Taking taylor expansion of x in x
0.108 * [taylor]: Taking taylor expansion of (- 0.5) in y
0.108 * [taylor]: Taking taylor expansion of 0.5 in y
0.109 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y))) in y
0.109 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.109 * [taylor]: Taking taylor expansion of 0.5 in y
0.109 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.109 * [taylor]: Taking taylor expansion of y in y
0.113 * [taylor]: Taking taylor expansion of 0 in y
0.116 * [taylor]: Taking taylor expansion of 0 in y
0.120 * [taylor]: Taking taylor expansion of 0 in y
0.121 * * * [progress]: simplifying candidates
0.122 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (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))
0.122 * [simplify]: Sending expressions to egg_math:
 (expm1 (+ h0 (/ (- h1 h0) h2)))
 (log1p (+ h0 (/ (- h1 h0) h2)))
 (* (exp h0) (exp (/ (- h1 h0) h2)))
 (log (+ h0 (/ (- h1 h0) h2)))
 (exp (+ h0 (/ (- h1 h0) h2)))
 (* (cbrt (+ h0 (/ (- h1 h0) h2))) (cbrt (+ h0 (/ (- h1 h0) h2))))
 (cbrt (+ h0 (/ (- h1 h0) h2)))
 (* (* (+ h0 (/ (- h1 h0) h2)) (+ h0 (/ (- h1 h0) h2))) (+ h0 (/ (- h1 h0) h2)))
 (sqrt (+ h0 (/ (- h1 h0) h2)))
 (sqrt (+ h0 (/ (- h1 h0) h2)))
 (+ (pow h0 3) (pow (/ (- h1 h0) h2) 3))
 (+ (* h0 h0) (- (* (/ (- h1 h0) h2) (/ (- h1 h0) h2)) (* h0 (/ (- h1 h0) h2))))
 (- (* h0 h0) (* (/ (- h1 h0) h2) (/ (- h1 h0) h2)))
 (- h0 (/ (- h1 h0) h2))
 (+ h0 (/ (- h1 h0) h2))
 (+ h0 (/ h1 h2))
 (+ (* h3 h0) (* h3 h1))
 (+ (* h3 h0) (* h3 h1))
 (+ (* h3 h0) (* h3 h1))
0.126 * * [simplify]: iteration  0 :  97  enodes  (cost  86 )
0.130 * * [simplify]: iteration  1 :  261  enodes  (cost  78 )
0.137 * * [simplify]: iteration  2 :  776  enodes  (cost  78 )
0.158 * * [simplify]: iteration  3 :  3838  enodes  (cost  78 )
0.218 * * [simplify]: iteration  4 :  5001  enodes  (cost  77 )
0.219 * [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 (/ (- y x) 2.0) (- (/ (- y x) 2.0) x) (* x x))
  (fma (/ (- y x) (* 2.0 2.0)) (- x y) (* x x))
  (- x (/ (- y x) 2.0))
  (+ x (/ (- y x) 2.0))
  (+ x (/ y 2.0))
  (fma 0.5 x (* 0.5 y))
  (fma 0.5 x (* 0.5 y))
  (fma 0.5 x (* 0.5 y))
0.219 * * * [progress]: adding candidates to table
0.262 * * [progress]: iteration 2 / 4
0.262 * * * [progress]: picking best candidate
0.264 * * * * [pick]: Picked  #<alt (λ (x y) (fma 0.5 x (* 0.5 y)))>
0.264 * * * [progress]: localizing error
0.268 * * * [progress]: generating rewritten candidates
0.268 * * * [progress]: generating series expansions
0.268 * * * [progress]: simplifying candidates
0.268 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.268 * [simplify]: Sending expressions to egg_math:
 
0.271 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.271 * [simplify]: Simplified to:
   
0.271 * * * [progress]: adding candidates to table
0.271 * [progress]: [Phase 3 of 3] Extracting.
0.273 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (fma 0.5 x (* 0.5 y))
0.273 * [simplify]: Sending expressions to egg_math:
 (fma h0 h1 (* h0 h2))
0.274 * * [simplify]: iteration  0 :  6  enodes  (cost  2 )
0.274 * * [simplify]: iteration  1 :  6  enodes  (cost  2 )
0.274 * [simplify]: Simplified to:
   (fma 0.5 x (* 0.5 y))
0.659 * [regime-testing]: End program error score: 0
0.679 * [regime-testing]: Target error score: 0