4.111 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [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 )
0.018 * * [simplify]: iteration  1 :  19  enodes  (cost  3 )
0.019 * * [simplify]: iteration  2 :  28  enodes  (cost  3 )
0.020 * * [simplify]: iteration  3 :  40  enodes  (cost  3 )
0.022 * * [simplify]: iteration  4 :  50  enodes  (cost  3 )
0.023 * * [simplify]: iteration  5 :  73  enodes  (cost  3 )
0.024 * * [simplify]: iteration  6 :  102  enodes  (cost  3 )
0.026 * * [simplify]: iteration  7 :  118  enodes  (cost  3 )
0.027 * * [simplify]: iteration  8 :  145  enodes  (cost  3 )
0.029 * * [simplify]: iteration  9 :  174  enodes  (cost  3 )
0.031 * * [simplify]: iteration  10 :  190  enodes  (cost  3 )
0.033 * * [simplify]: iteration  11 :  190  enodes  (cost  3 )
0.033 * [simplify]: Simplified to:
   (+ x (/ (- y x) 2.0))
0.033 * * [progress]: iteration 1 / 4
0.033 * * * [progress]: picking best candidate
0.035 * * * * [pick]: Picked  #<alt (λ (x y) (+ x (/ (- y x) 2.0)))>
0.035 * * * [progress]: localizing error
0.039 * * * [progress]: generating rewritten candidates
0.039 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.065 * * * [progress]: generating series expansions
0.065 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.065 * [approximate]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in (x y) around 0
0.065 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in y
0.065 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
0.065 * [taylor]: Taking taylor expansion of 0.5 in y
0.065 * [taylor]: Taking taylor expansion of x in y
0.065 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.065 * [taylor]: Taking taylor expansion of 0.5 in y
0.065 * [taylor]: Taking taylor expansion of y in y
0.065 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
0.065 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.065 * [taylor]: Taking taylor expansion of 0.5 in x
0.065 * [taylor]: Taking taylor expansion of x in x
0.065 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.065 * [taylor]: Taking taylor expansion of 0.5 in x
0.065 * [taylor]: Taking taylor expansion of y in x
0.065 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
0.065 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.065 * [taylor]: Taking taylor expansion of 0.5 in x
0.065 * [taylor]: Taking taylor expansion of x in x
0.065 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.065 * [taylor]: Taking taylor expansion of 0.5 in x
0.065 * [taylor]: Taking taylor expansion of y in x
0.066 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.066 * [taylor]: Taking taylor expansion of 0.5 in y
0.066 * [taylor]: Taking taylor expansion of y in y
0.068 * [taylor]: Taking taylor expansion of 0.5 in y
0.070 * [taylor]: Taking taylor expansion of 0 in y
0.072 * [taylor]: Taking taylor expansion of 0 in y
0.072 * [approximate]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in (x y) around 0
0.072 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
0.072 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.072 * [taylor]: Taking taylor expansion of 0.5 in y
0.072 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.072 * [taylor]: Taking taylor expansion of y in y
0.072 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
0.073 * [taylor]: Taking taylor expansion of 0.5 in y
0.073 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.073 * [taylor]: Taking taylor expansion of x in y
0.073 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.073 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.073 * [taylor]: Taking taylor expansion of 0.5 in x
0.073 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.073 * [taylor]: Taking taylor expansion of y in x
0.073 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.073 * [taylor]: Taking taylor expansion of 0.5 in x
0.073 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.073 * [taylor]: Taking taylor expansion of x in x
0.073 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.073 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.073 * [taylor]: Taking taylor expansion of 0.5 in x
0.073 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.073 * [taylor]: Taking taylor expansion of y in x
0.073 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.073 * [taylor]: Taking taylor expansion of 0.5 in x
0.073 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.073 * [taylor]: Taking taylor expansion of x in x
0.074 * [taylor]: Taking taylor expansion of 0.5 in y
0.075 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.075 * [taylor]: Taking taylor expansion of 0.5 in y
0.075 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.075 * [taylor]: Taking taylor expansion of y in y
0.077 * [taylor]: Taking taylor expansion of 0 in y
0.079 * [taylor]: Taking taylor expansion of 0 in y
0.082 * [taylor]: Taking taylor expansion of 0 in y
0.083 * [approximate]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in (x y) around 0
0.083 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in y
0.083 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
0.083 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.083 * [taylor]: Taking taylor expansion of 0.5 in y
0.083 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.083 * [taylor]: Taking taylor expansion of y in y
0.083 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
0.083 * [taylor]: Taking taylor expansion of 0.5 in y
0.083 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.083 * [taylor]: Taking taylor expansion of x in y
0.083 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in x
0.083 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.083 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.083 * [taylor]: Taking taylor expansion of 0.5 in x
0.083 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.083 * [taylor]: Taking taylor expansion of y in x
0.083 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.083 * [taylor]: Taking taylor expansion of 0.5 in x
0.083 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.083 * [taylor]: Taking taylor expansion of x in x
0.084 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in x
0.084 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.084 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.084 * [taylor]: Taking taylor expansion of 0.5 in x
0.084 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.084 * [taylor]: Taking taylor expansion of y in x
0.084 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.084 * [taylor]: Taking taylor expansion of 0.5 in x
0.084 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.084 * [taylor]: Taking taylor expansion of x in x
0.085 * [taylor]: Taking taylor expansion of (- 0.5) in y
0.085 * [taylor]: Taking taylor expansion of 0.5 in y
0.086 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y))) in y
0.086 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.086 * [taylor]: Taking taylor expansion of 0.5 in y
0.086 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.086 * [taylor]: Taking taylor expansion of y in y
0.089 * [taylor]: Taking taylor expansion of 0 in y
0.092 * [taylor]: Taking taylor expansion of 0 in y
0.095 * [taylor]: Taking taylor expansion of 0 in y
0.096 * * * [progress]: simplifying candidates
0.096 * [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))
0.096 * [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))
0.100 * * [simplify]: iteration  0 :  97  enodes  (cost  86 )
0.102 * * [simplify]: iteration  1 :  261  enodes  (cost  78 )
0.107 * * [simplify]: iteration  2 :  776  enodes  (cost  78 )
0.124 * * [simplify]: iteration  3 :  3838  enodes  (cost  78 )
0.178 * * [simplify]: iteration  4 :  5001  enodes  (cost  77 )
0.179 * [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))
0.179 * * * [progress]: adding candidates to table
0.218 * * [progress]: iteration 2 / 4
0.218 * * * [progress]: picking best candidate
0.220 * * * * [pick]: Picked  #<alt (λ (x y) (fma 0.5 x (* 0.5 y)))>
0.220 * * * [progress]: localizing error
0.224 * * * [progress]: generating rewritten candidates
0.224 * * * [progress]: generating series expansions
0.224 * * * [progress]: simplifying candidates
0.224 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.224 * [simplify]: Sending expressions to egg_math:
 
0.226 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.226 * [simplify]: Simplified to:
   
0.226 * * * [progress]: adding candidates to table
0.227 * [progress]: [Phase 3 of 3] Extracting.
0.228 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (fma 0.5 x (* 0.5 y))
0.228 * [simplify]: Sending expressions to egg_math:
 (fma h0 h1 (* h0 h2))
0.229 * * [simplify]: iteration  0 :  6  enodes  (cost  2 )
0.229 * * [simplify]: iteration  1 :  6  enodes  (cost  2 )
0.229 * [simplify]: Simplified to:
   (fma 0.5 x (* 0.5 y))
0.613 * [regime-testing]: End program error score: 0
0.632 * [regime-testing]: Target error score: 0