26.424 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.018 * * * [progress]: [2/2] Setting up program.
0.020 * [progress]: [Phase 2 of 3] Improving.
0.021 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (+ x (/ (- y x) 2.0))
0.021 * [simplify]: Sending expressions to egg_math:
 (+ h0 (/ (- h1 h0) h2))
0.024 * * [simplify]: iteration  0 :  12  enodes  (cost  3 )
0.026 * * [simplify]: iteration  1 :  19  enodes  (cost  3 )
0.027 * * [simplify]: iteration  2 :  28  enodes  (cost  3 )
0.029 * * [simplify]: iteration  3 :  40  enodes  (cost  3 )
0.031 * * [simplify]: iteration  4 :  50  enodes  (cost  3 )
0.033 * * [simplify]: iteration  5 :  73  enodes  (cost  3 )
0.035 * * [simplify]: iteration  6 :  102  enodes  (cost  3 )
0.037 * * [simplify]: iteration  7 :  118  enodes  (cost  3 )
0.039 * * [simplify]: iteration  8 :  145  enodes  (cost  3 )
0.042 * * [simplify]: iteration  9 :  174  enodes  (cost  3 )
0.044 * * [simplify]: iteration  10 :  190  enodes  (cost  3 )
0.047 * * [simplify]: iteration  11 :  190  enodes  (cost  3 )
0.047 * [simplify]: Simplified to:
   (+ x (/ (- y x) 2.0))
0.047 * * [progress]: iteration 1 / 4
0.047 * * * [progress]: picking best candidate
0.049 * * * * [pick]: Picked  #<alt (λ (x y) (+ x (/ (- y x) 2.0)))>
0.049 * * * [progress]: localizing error
0.056 * * * [progress]: generating rewritten candidates
0.056 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.081 * * * [progress]: generating series expansions
0.081 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.081 * [approximate]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in (x y) around 0
0.081 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in y
0.082 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
0.082 * [taylor]: Taking taylor expansion of 0.5 in y
0.082 * [taylor]: Taking taylor expansion of x in y
0.082 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.082 * [taylor]: Taking taylor expansion of 0.5 in y
0.082 * [taylor]: Taking taylor expansion of y in y
0.082 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
0.082 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.082 * [taylor]: Taking taylor expansion of 0.5 in x
0.082 * [taylor]: Taking taylor expansion of x in x
0.082 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.082 * [taylor]: Taking taylor expansion of 0.5 in x
0.082 * [taylor]: Taking taylor expansion of y in x
0.082 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
0.082 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.082 * [taylor]: Taking taylor expansion of 0.5 in x
0.082 * [taylor]: Taking taylor expansion of x in x
0.082 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.082 * [taylor]: Taking taylor expansion of 0.5 in x
0.082 * [taylor]: Taking taylor expansion of y in x
0.082 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.082 * [taylor]: Taking taylor expansion of 0.5 in y
0.082 * [taylor]: Taking taylor expansion of y in y
0.084 * [taylor]: Taking taylor expansion of 0.5 in y
0.086 * [taylor]: Taking taylor expansion of 0 in y
0.087 * [taylor]: Taking taylor expansion of 0 in y
0.088 * [approximate]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in (x y) around 0
0.088 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
0.088 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.088 * [taylor]: Taking taylor expansion of 0.5 in y
0.088 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.088 * [taylor]: Taking taylor expansion of y in y
0.088 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
0.088 * [taylor]: Taking taylor expansion of 0.5 in y
0.088 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.088 * [taylor]: Taking taylor expansion of x in y
0.088 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.088 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.088 * [taylor]: Taking taylor expansion of 0.5 in x
0.088 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.088 * [taylor]: Taking taylor expansion of y in x
0.088 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.088 * [taylor]: Taking taylor expansion of 0.5 in x
0.088 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.088 * [taylor]: Taking taylor expansion of x in x
0.088 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.088 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.088 * [taylor]: Taking taylor expansion of 0.5 in x
0.089 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.089 * [taylor]: Taking taylor expansion of y in x
0.089 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.089 * [taylor]: Taking taylor expansion of 0.5 in x
0.089 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.089 * [taylor]: Taking taylor expansion of x in x
0.089 * [taylor]: Taking taylor expansion of 0.5 in y
0.090 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.090 * [taylor]: Taking taylor expansion of 0.5 in y
0.090 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.090 * [taylor]: Taking taylor expansion of y in y
0.092 * [taylor]: Taking taylor expansion of 0 in y
0.094 * [taylor]: Taking taylor expansion of 0 in y
0.097 * [taylor]: Taking taylor expansion of 0 in y
0.097 * [approximate]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in (x y) around 0
0.097 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in y
0.097 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
0.097 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.097 * [taylor]: Taking taylor expansion of 0.5 in y
0.097 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.097 * [taylor]: Taking taylor expansion of y in y
0.098 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
0.098 * [taylor]: Taking taylor expansion of 0.5 in y
0.098 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.098 * [taylor]: Taking taylor expansion of x in y
0.098 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in x
0.098 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.098 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.098 * [taylor]: Taking taylor expansion of 0.5 in x
0.098 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.098 * [taylor]: Taking taylor expansion of y in x
0.098 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.098 * [taylor]: Taking taylor expansion of 0.5 in x
0.098 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.098 * [taylor]: Taking taylor expansion of x in x
0.098 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in x
0.098 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.098 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.098 * [taylor]: Taking taylor expansion of 0.5 in x
0.098 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.098 * [taylor]: Taking taylor expansion of y in x
0.098 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.098 * [taylor]: Taking taylor expansion of 0.5 in x
0.098 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.098 * [taylor]: Taking taylor expansion of x in x
0.099 * [taylor]: Taking taylor expansion of (- 0.5) in y
0.099 * [taylor]: Taking taylor expansion of 0.5 in y
0.100 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y))) in y
0.100 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.100 * [taylor]: Taking taylor expansion of 0.5 in y
0.100 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.100 * [taylor]: Taking taylor expansion of y in y
0.105 * [taylor]: Taking taylor expansion of 0 in y
0.108 * [taylor]: Taking taylor expansion of 0 in y
0.112 * [taylor]: Taking taylor expansion of 0 in y
0.112 * * * [progress]: simplifying candidates
0.112 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (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))
0.113 * [simplify]: Sending expressions to egg_math:
 (* (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))
0.115 * * [simplify]: iteration  0 :  91  enodes  (cost  78 )
0.117 * * [simplify]: iteration  1 :  240  enodes  (cost  71 )
0.121 * * [simplify]: iteration  2 :  711  enodes  (cost  71 )
0.135 * * [simplify]: iteration  3 :  3533  enodes  (cost  71 )
0.183 * * [simplify]: iteration  4 :  5001  enodes  (cost  71 )
0.183 * [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))
  (+ (* (/ (- y x) 2.0) (- (/ (- y x) 2.0) x)) (* x 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))
0.183 * * * [progress]: adding candidates to table
0.206 * * [progress]: iteration 2 / 4
0.206 * * * [progress]: picking best candidate
0.207 * * * * [pick]: Picked  #<alt (λ (x y) (* 0.5 (+ x y)))>
0.207 * * * [progress]: localizing error
0.210 * * * [progress]: generating rewritten candidates
0.210 * * * [progress]: generating series expansions
0.210 * * * [progress]: simplifying candidates
0.210 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.210 * [simplify]: Sending expressions to egg_math:
 
0.212 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.212 * [simplify]: Simplified to:
   
0.212 * * * [progress]: adding candidates to table
0.212 * [progress]: [Phase 3 of 3] Extracting.
0.213 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* 0.5 (+ x y))
0.213 * [simplify]: Sending expressions to egg_math:
 (* h0 (+ h1 h2))
0.214 * * [simplify]: iteration  0 :  7  enodes  (cost  2 )
0.214 * * [simplify]: iteration  1 :  7  enodes  (cost  2 )
0.214 * [simplify]: Simplified to:
   (* 0.5 (+ x y))
0.562 * [regime-testing]: End program error score: 0
0.580 * [regime-testing]: Target error score: 0