24.575 * [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-regraph> :
   (/ (- x y) (* (* x 2.0) y))
0.015 * * [simplify]: iteration  0 :  7  enodes  (cost  9 )
0.016 * * [simplify]: iteration  1 :  18  enodes  (cost  9 )
0.019 * * [simplify]: iteration  2 :  47  enodes  (cost  9 )
0.026 * * [simplify]: iteration  3 :  102  enodes  (cost  9 )
0.041 * * [simplify]: iteration  4 :  146  enodes  (cost  9 )
0.061 * * [simplify]: iteration  5 :  171  enodes  (cost  9 )
0.079 * * [simplify]: iteration  6 :  186  enodes  (cost  9 )
0.101 * * [simplify]: iteration  7 :  191  enodes  (cost  9 )
0.120 * * [simplify]: iteration  done :  191  enodes  (cost  9 )
0.120 * [simplify]: Simplified to:
   (/ (- x y) (* (* x 2.0) y))
0.121 * * [progress]: iteration 1 / 4
0.121 * * * [progress]: picking best candidate
0.122 * * * * [pick]: Picked  #<alt (λ (x y) (/ (- x y) (* (* x 2.0) y)))>
0.122 * * * [progress]: localizing error
0.128 * * * [progress]: generating rewritten candidates
0.128 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.140 * * * [progress]: generating series expansions
0.140 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.141 * [approximate]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in (x y) around 0
0.141 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in y
0.141 * [taylor]: Taking taylor expansion of 0.5 in y
0.141 * [taylor]: Taking taylor expansion of (/ (- x y) (* x y)) in y
0.141 * [taylor]: Taking taylor expansion of (- x y) in y
0.141 * [taylor]: Taking taylor expansion of x in y
0.141 * [taylor]: Taking taylor expansion of y in y
0.141 * [taylor]: Taking taylor expansion of (* x y) in y
0.141 * [taylor]: Taking taylor expansion of x in y
0.141 * [taylor]: Taking taylor expansion of y in y
0.141 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in x
0.142 * [taylor]: Taking taylor expansion of 0.5 in x
0.142 * [taylor]: Taking taylor expansion of (/ (- x y) (* x y)) in x
0.142 * [taylor]: Taking taylor expansion of (- x y) in x
0.142 * [taylor]: Taking taylor expansion of x in x
0.142 * [taylor]: Taking taylor expansion of y in x
0.142 * [taylor]: Taking taylor expansion of (* x y) in x
0.142 * [taylor]: Taking taylor expansion of x in x
0.142 * [taylor]: Taking taylor expansion of y in x
0.142 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in x
0.142 * [taylor]: Taking taylor expansion of 0.5 in x
0.142 * [taylor]: Taking taylor expansion of (/ (- x y) (* x y)) in x
0.142 * [taylor]: Taking taylor expansion of (- x y) in x
0.142 * [taylor]: Taking taylor expansion of x in x
0.142 * [taylor]: Taking taylor expansion of y in x
0.142 * [taylor]: Taking taylor expansion of (* x y) in x
0.142 * [taylor]: Taking taylor expansion of x in x
0.142 * [taylor]: Taking taylor expansion of y in x
0.143 * [taylor]: Taking taylor expansion of -0.5 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
0.147 * [taylor]: Taking taylor expansion of 0 in y
0.150 * [taylor]: Taking taylor expansion of 0 in y
0.154 * [taylor]: Taking taylor expansion of 0 in y
0.154 * [approximate]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in (x y) around 0
0.154 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in y
0.154 * [taylor]: Taking taylor expansion of 0.5 in y
0.154 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (* x y)) in y
0.154 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) 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 (/ 1 y) in y
0.154 * [taylor]: Taking taylor expansion of y in y
0.155 * [taylor]: Taking taylor expansion of (* x y) in y
0.155 * [taylor]: Taking taylor expansion of x in y
0.155 * [taylor]: Taking taylor expansion of y in y
0.155 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in x
0.155 * [taylor]: Taking taylor expansion of 0.5 in x
0.155 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (* x y)) in x
0.155 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.155 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.155 * [taylor]: Taking taylor expansion of x 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 (* x y) in x
0.155 * [taylor]: Taking taylor expansion of x in x
0.155 * [taylor]: Taking taylor expansion of y in x
0.155 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in x
0.155 * [taylor]: Taking taylor expansion of 0.5 in x
0.155 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (* x y)) in x
0.155 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.155 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.155 * [taylor]: Taking taylor expansion of x 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 (* x y) in x
0.156 * [taylor]: Taking taylor expansion of x in x
0.156 * [taylor]: Taking taylor expansion of y in x
0.159 * [taylor]: Taking taylor expansion of 0 in y
0.160 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.160 * [taylor]: Taking taylor expansion of 0.5 in y
0.160 * [taylor]: Taking taylor expansion of y in y
0.163 * [taylor]: Taking taylor expansion of (- 0.5) in y
0.163 * [taylor]: Taking taylor expansion of 0.5 in y
0.167 * [taylor]: Taking taylor expansion of 0 in y
0.172 * [taylor]: Taking taylor expansion of 0 in y
0.178 * [taylor]: Taking taylor expansion of 0 in y
0.178 * [approximate]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in (x y) around 0
0.179 * [taylor]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in y
0.179 * [taylor]: Taking taylor expansion of 0.5 in y
0.179 * [taylor]: Taking taylor expansion of (* x (* y (- (/ 1 y) (/ 1 x)))) in y
0.179 * [taylor]: Taking taylor expansion of x in y
0.179 * [taylor]: Taking taylor expansion of (* y (- (/ 1 y) (/ 1 x))) in y
0.179 * [taylor]: Taking taylor expansion of y in y
0.179 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in y
0.179 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.179 * [taylor]: Taking taylor expansion of y in y
0.179 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.179 * [taylor]: Taking taylor expansion of x in y
0.179 * [taylor]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in x
0.179 * [taylor]: Taking taylor expansion of 0.5 in x
0.179 * [taylor]: Taking taylor expansion of (* x (* y (- (/ 1 y) (/ 1 x)))) in x
0.179 * [taylor]: Taking taylor expansion of x in x
0.179 * [taylor]: Taking taylor expansion of (* y (- (/ 1 y) (/ 1 x))) in x
0.179 * [taylor]: Taking taylor expansion of y in x
0.179 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.179 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.179 * [taylor]: Taking taylor expansion of y in x
0.179 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.179 * [taylor]: Taking taylor expansion of x in x
0.179 * [taylor]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in x
0.180 * [taylor]: Taking taylor expansion of 0.5 in x
0.180 * [taylor]: Taking taylor expansion of (* x (* y (- (/ 1 y) (/ 1 x)))) in x
0.180 * [taylor]: Taking taylor expansion of x in x
0.180 * [taylor]: Taking taylor expansion of (* y (- (/ 1 y) (/ 1 x))) in x
0.180 * [taylor]: Taking taylor expansion of y in x
0.180 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.180 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.180 * [taylor]: Taking taylor expansion of y in x
0.180 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.180 * [taylor]: Taking taylor expansion of x in x
0.181 * [taylor]: Taking taylor expansion of 0 in y
0.182 * [taylor]: Taking taylor expansion of (- (* 0.5 y)) in y
0.182 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.182 * [taylor]: Taking taylor expansion of 0.5 in y
0.182 * [taylor]: Taking taylor expansion of y in y
0.185 * [taylor]: Taking taylor expansion of 0.5 in y
0.188 * [taylor]: Taking taylor expansion of 0 in y
0.193 * [taylor]: Taking taylor expansion of 0 in y
0.199 * [taylor]: Taking taylor expansion of 0 in y
0.199 * * * [progress]: simplifying candidates
0.200 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (log (- x y)) (+ (+ (log x) (log 2.0)) (log y)))
  (- (log (- x y)) (+ (log (* x 2.0)) (log y)))
  (- (log (- x y)) (log (* (* x 2.0) y)))
  (log (/ (- x y) (* (* x 2.0) y)))
  (exp (/ (- x y) (* (* x 2.0) y)))
  (/ (* (* (- x y) (- x y)) (- x y)) (* (* (* (* x x) x) (* (* 2.0 2.0) 2.0)) (* (* y y) y)))
  (/ (* (* (- x y) (- x y)) (- x y)) (* (* (* (* x 2.0) (* x 2.0)) (* x 2.0)) (* (* y y) y)))
  (/ (* (* (- x y) (- x y)) (- x y)) (* (* (* (* x 2.0) y) (* (* x 2.0) y)) (* (* x 2.0) y)))
  (* (cbrt (/ (- x y) (* (* x 2.0) y))) (cbrt (/ (- x y) (* (* x 2.0) y))))
  (cbrt (/ (- x y) (* (* x 2.0) y)))
  (* (* (/ (- x y) (* (* x 2.0) y)) (/ (- x y) (* (* x 2.0) y))) (/ (- x y) (* (* x 2.0) y)))
  (sqrt (/ (- x y) (* (* x 2.0) y)))
  (sqrt (/ (- x y) (* (* x 2.0) y)))
  (- (- x y))
  (- (* (* x 2.0) y))
  (/ x (* (* x 2.0) y))
  (/ y (* (* x 2.0) y))
  (/ (* (cbrt (- x y)) (cbrt (- x y))) (* x 2.0))
  (/ (cbrt (- x y)) y)
  (/ (sqrt (- x y)) (* x 2.0))
  (/ (sqrt (- x y)) y)
  (/ 1 (* x 2.0))
  (/ (- x y) y)
  (/ (+ (sqrt x) (sqrt y)) (* x 2.0))
  (/ (- (sqrt x) (sqrt y)) y)
  (/ 1 (* x 2.0))
  (/ (- x y) y)
  (/ 1 (* (* x 2.0) y))
  (/ (* (* x 2.0) y) (- x y))
  (/ (- x y) (* x 2.0))
  (/ (* (* x 2.0) y) (cbrt (- x y)))
  (/ (* (* x 2.0) y) (sqrt (- x y)))
  (/ (* (* x 2.0) y) (- x y))
  (/ (* (* x 2.0) y) (- (sqrt x) (sqrt y)))
  (/ (* (* x 2.0) y) (- x y))
  (* (* (* x 2.0) y) (+ (* x x) (+ (* y y) (* x y))))
  (* (* (* x 2.0) y) (+ x y))
  (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
  (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
  (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
0.202 * * [simplify]: iteration  0 :  82  enodes  (cost  447 )
0.215 * * [simplify]: iteration  1 :  236  enodes  (cost  433 )
0.276 * * [simplify]: iteration  2 :  903  enodes  (cost  353 )
1.719 * * [simplify]: iteration  3 :  4564  enodes  (cost  351 )
2.769 * * [simplify]: iteration  done :  5000  enodes  (cost  351 )
2.769 * [simplify]: Simplified to:
   (log (/ (- x y) (* (* x 2.0) y)))
  (log (/ (- x y) (* (* x 2.0) y)))
  (log (/ (- x y) (* (* x 2.0) y)))
  (log (/ (- x y) (* (* x 2.0) y)))
  (exp (/ (- x y) (* (* x 2.0) y)))
  (pow (/ (- x y) (* (* x 2.0) y)) 3)
  (pow (/ (- x y) (* (* x 2.0) y)) 3)
  (pow (/ (- x y) (* (* x 2.0) y)) 3)
  (* (cbrt (/ (- x y) (* (* x 2.0) y))) (cbrt (/ (- x y) (* (* x 2.0) y))))
  (cbrt (/ (- x y) (* (* x 2.0) y)))
  (pow (/ (- x y) (* (* x 2.0) y)) 3)
  (sqrt (/ (- x y) (* (* x 2.0) y)))
  (sqrt (/ (- x y) (* (* x 2.0) y)))
  (- (- x y))
  (- (* (* x 2.0) y))
  (/ (/ 1 2.0) y)
  (/ 1 (* x 2.0))
  (/ (* (cbrt (- x y)) (cbrt (- x y))) (* x 2.0))
  (/ (cbrt (- x y)) y)
  (/ (sqrt (- x y)) (* x 2.0))
  (/ (sqrt (- x y)) y)
  (/ 1 (* x 2.0))
  (/ (- x y) y)
  (/ (+ (sqrt x) (sqrt y)) (* x 2.0))
  (/ (- (sqrt x) (sqrt y)) y)
  (/ 1 (* x 2.0))
  (/ (- x y) y)
  (/ 1 (* (* x 2.0) y))
  (/ (* (* x 2.0) y) (- x y))
  (/ (- x y) (* x 2.0))
  (/ (* (* x 2.0) y) (cbrt (- x y)))
  (/ (* (* x 2.0) y) (sqrt (- x y)))
  (/ (* (* x 2.0) y) (- x y))
  (/ (* (* x 2.0) y) (- (sqrt x) (sqrt y)))
  (/ (* (* x 2.0) y) (- x y))
  (* (+ (* y (+ x y)) (* x x)) (* (* x 2.0) y))
  (* (* (* x 2.0) y) (+ x y))
  (- (/ 0.5 y) (/ 0.5 x))
  (- (/ 0.5 y) (/ 0.5 x))
  (- (/ 0.5 y) (/ 0.5 x))
2.769 * * * [progress]: adding candidates to table
2.822 * * [progress]: iteration 2 / 4
2.823 * * * [progress]: picking best candidate
2.824 * * * * [pick]: Picked  #<alt (λ (x y) (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))))>
2.824 * * * [progress]: localizing error
2.831 * * * [progress]: generating rewritten candidates
2.831 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
2.870 * * * [progress]: generating series expansions
2.870 * * * * [progress]: [ 1 / 1 ] generating series at (2)
2.871 * [approximate]: Taking taylor expansion of (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in (y x) around 0
2.871 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
2.871 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
2.871 * [taylor]: Taking taylor expansion of 0.5 in x
2.871 * [taylor]: Taking taylor expansion of (/ 1 y) in x
2.871 * [taylor]: Taking taylor expansion of y in x
2.871 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
2.871 * [taylor]: Taking taylor expansion of 0.5 in x
2.871 * [taylor]: Taking taylor expansion of (/ 1 x) in x
2.871 * [taylor]: Taking taylor expansion of x in x
2.871 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
2.871 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
2.871 * [taylor]: Taking taylor expansion of 0.5 in y
2.871 * [taylor]: Taking taylor expansion of (/ 1 y) in y
2.871 * [taylor]: Taking taylor expansion of y in y
2.872 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
2.872 * [taylor]: Taking taylor expansion of 0.5 in y
2.872 * [taylor]: Taking taylor expansion of (/ 1 x) in y
2.872 * [taylor]: Taking taylor expansion of x in y
2.872 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
2.872 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
2.872 * [taylor]: Taking taylor expansion of 0.5 in y
2.872 * [taylor]: Taking taylor expansion of (/ 1 y) in y
2.872 * [taylor]: Taking taylor expansion of y in y
2.872 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
2.872 * [taylor]: Taking taylor expansion of 0.5 in y
2.872 * [taylor]: Taking taylor expansion of (/ 1 x) in y
2.872 * [taylor]: Taking taylor expansion of x in y
2.873 * [taylor]: Taking taylor expansion of 0.5 in x
2.874 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 x))) in x
2.874 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
2.874 * [taylor]: Taking taylor expansion of 0.5 in x
2.874 * [taylor]: Taking taylor expansion of (/ 1 x) in x
2.874 * [taylor]: Taking taylor expansion of x in x
2.879 * [taylor]: Taking taylor expansion of 0 in x
2.883 * [taylor]: Taking taylor expansion of 0 in x
2.887 * [taylor]: Taking taylor expansion of 0 in x
2.888 * [approximate]: Taking taylor expansion of (- (* 0.5 y) (* 0.5 x)) in (y x) around 0
2.888 * [taylor]: Taking taylor expansion of (- (* 0.5 y) (* 0.5 x)) in x
2.888 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
2.888 * [taylor]: Taking taylor expansion of 0.5 in x
2.888 * [taylor]: Taking taylor expansion of y in x
2.888 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
2.888 * [taylor]: Taking taylor expansion of 0.5 in x
2.888 * [taylor]: Taking taylor expansion of x in x
2.888 * [taylor]: Taking taylor expansion of (- (* 0.5 y) (* 0.5 x)) in y
2.888 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
2.888 * [taylor]: Taking taylor expansion of 0.5 in y
2.888 * [taylor]: Taking taylor expansion of y in y
2.888 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
2.888 * [taylor]: Taking taylor expansion of 0.5 in y
2.888 * [taylor]: Taking taylor expansion of x in y
2.888 * [taylor]: Taking taylor expansion of (- (* 0.5 y) (* 0.5 x)) in y
2.888 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
2.888 * [taylor]: Taking taylor expansion of 0.5 in y
2.888 * [taylor]: Taking taylor expansion of y in y
2.888 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
2.888 * [taylor]: Taking taylor expansion of 0.5 in y
2.888 * [taylor]: Taking taylor expansion of x in y
2.889 * [taylor]: Taking taylor expansion of (- (* 0.5 x)) in x
2.889 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
2.889 * [taylor]: Taking taylor expansion of 0.5 in x
2.889 * [taylor]: Taking taylor expansion of x in x
2.891 * [taylor]: Taking taylor expansion of 0.5 in x
2.894 * [taylor]: Taking taylor expansion of 0 in x
2.897 * [taylor]: Taking taylor expansion of 0 in x
2.898 * [approximate]: Taking taylor expansion of (- (* 0.5 x) (* 0.5 y)) in (y x) around 0
2.898 * [taylor]: Taking taylor expansion of (- (* 0.5 x) (* 0.5 y)) in x
2.898 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
2.898 * [taylor]: Taking taylor expansion of 0.5 in x
2.898 * [taylor]: Taking taylor expansion of x in x
2.898 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
2.898 * [taylor]: Taking taylor expansion of 0.5 in x
2.898 * [taylor]: Taking taylor expansion of y in x
2.898 * [taylor]: Taking taylor expansion of (- (* 0.5 x) (* 0.5 y)) in y
2.898 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
2.898 * [taylor]: Taking taylor expansion of 0.5 in y
2.898 * [taylor]: Taking taylor expansion of x in y
2.898 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
2.898 * [taylor]: Taking taylor expansion of 0.5 in y
2.898 * [taylor]: Taking taylor expansion of y in y
2.898 * [taylor]: Taking taylor expansion of (- (* 0.5 x) (* 0.5 y)) in y
2.898 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
2.898 * [taylor]: Taking taylor expansion of 0.5 in y
2.898 * [taylor]: Taking taylor expansion of x in y
2.898 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
2.898 * [taylor]: Taking taylor expansion of 0.5 in y
2.898 * [taylor]: Taking taylor expansion of y in y
2.899 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
2.899 * [taylor]: Taking taylor expansion of 0.5 in x
2.899 * [taylor]: Taking taylor expansion of x in x
2.901 * [taylor]: Taking taylor expansion of (- 0.5) in x
2.901 * [taylor]: Taking taylor expansion of 0.5 in x
2.904 * [taylor]: Taking taylor expansion of 0 in x
2.907 * [taylor]: Taking taylor expansion of 0 in x
2.907 * * * [progress]: simplifying candidates
2.908 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (/ (exp (/ (/ 1 2.0) y)) (exp (/ 1 (* x 2.0))))
  (log (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))))
  (exp (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))))
  (* (cbrt (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0)))) (cbrt (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0)))))
  (cbrt (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))))
  (* (* (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))) (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0)))) (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))))
  (sqrt (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))))
  (sqrt (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))))
  (- (* (/ 1 2.0) (* x 2.0)) (* y 1))
  (* y (* x 2.0))
  (- (pow (/ (/ 1 2.0) y) 3) (pow (/ 1 (* x 2.0)) 3))
  (+ (* (/ (/ 1 2.0) y) (/ (/ 1 2.0) y)) (+ (* (/ 1 (* x 2.0)) (/ 1 (* x 2.0))) (* (/ (/ 1 2.0) y) (/ 1 (* x 2.0)))))
  (- (/ 1 (* x 2.0)))
  (- (* (/ (/ 1 2.0) y) (/ (/ 1 2.0) y)) (* (/ 1 (* x 2.0)) (/ 1 (* x 2.0))))
  (+ (/ (/ 1 2.0) y) (/ 1 (* x 2.0)))
  (+ (sqrt (/ (/ 1 2.0) y)) (sqrt (/ 1 (* x 2.0))))
  (- (sqrt (/ (/ 1 2.0) y)) (sqrt (/ 1 (* x 2.0))))
  (+ (/ (sqrt (/ 1 2.0)) (sqrt y)) (sqrt (/ 1 (* x 2.0))))
  (- (/ (sqrt (/ 1 2.0)) (sqrt y)) (sqrt (/ 1 (* x 2.0))))
  (+ (/ (/ (sqrt 1) (sqrt 2.0)) (sqrt y)) (sqrt (/ 1 (* x 2.0))))
  (- (/ (/ (sqrt 1) (sqrt 2.0)) (sqrt y)) (sqrt (/ 1 (* x 2.0))))
  (+ (/ (/ 1 (sqrt 2.0)) (sqrt y)) (sqrt (/ 1 (* x 2.0))))
  (- (/ (/ 1 (sqrt 2.0)) (sqrt y)) (sqrt (/ 1 (* x 2.0))))
  (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0)))
  (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0)))
  (- (/ 1 (* x 2.0)))
  (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
  (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
  (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
2.910 * * [simplify]: iteration  0 :  60  enodes  (cost  412 )
2.921 * * [simplify]: iteration  1 :  144  enodes  (cost  393 )
2.951 * * [simplify]: iteration  2 :  356  enodes  (cost  357 )
3.223 * * [simplify]: iteration  3 :  1224  enodes  (cost  351 )
4.535 * * [simplify]: iteration  4 :  3929  enodes  (cost  351 )
5.474 * * [simplify]: iteration  done :  5000  enodes  (cost  351 )
5.474 * [simplify]: Simplified to:
   (exp (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))))
  (log (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))))
  (exp (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))))
  (* (cbrt (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0)))) (cbrt (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0)))))
  (cbrt (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))))
  (pow (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))) 3)
  (sqrt (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))))
  (sqrt (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))))
  (- x y)
  (* x (* y 2.0))
  (- (pow (/ (/ 1 2.0) y) 3) (pow (/ 1 (* x 2.0)) 3))
  (+ (/ (+ (/ (/ 1 2.0) y) (/ 1 (* x 2.0))) (* y 2.0)) (/ (/ (/ (/ 1 2.0) x) 2.0) x))
  (/ -1 (* x 2.0))
  (- (/ (/ (/ 1 2.0) y) (* y 2.0)) (/ (/ (/ 1 2.0) x) (* x 2.0)))
  (+ (/ (/ 1 2.0) y) (/ 1 (* x 2.0)))
  (+ (sqrt (/ (/ 1 2.0) y)) (sqrt (/ 1 (* x 2.0))))
  (- (sqrt (/ (/ 1 2.0) y)) (sqrt (/ 1 (* x 2.0))))
  (+ (/ (sqrt (/ 1 2.0)) (sqrt y)) (sqrt (/ 1 (* x 2.0))))
  (- (/ (sqrt (/ 1 2.0)) (sqrt y)) (sqrt (/ 1 (* x 2.0))))
  (+ (/ (/ 1 (sqrt 2.0)) (sqrt y)) (sqrt (/ 1 (* x 2.0))))
  (- (/ (/ 1 (sqrt 2.0)) (sqrt y)) (sqrt (/ 1 (* x 2.0))))
  (+ (/ (/ 1 (sqrt 2.0)) (sqrt y)) (sqrt (/ 1 (* x 2.0))))
  (- (/ (/ 1 (sqrt 2.0)) (sqrt y)) (sqrt (/ 1 (* x 2.0))))
  (+ (/ (/ 1 2.0) y) (/ -1 (* x 2.0)))
  (+ (/ (/ 1 2.0) y) (/ -1 (* x 2.0)))
  (/ -1 (* x 2.0))
  (- (/ 0.5 y) (/ 0.5 x))
  (- (/ 0.5 y) (/ 0.5 x))
  (- (/ 0.5 y) (/ 0.5 x))
5.475 * * * [progress]: adding candidates to table
5.522 * [progress]: [Phase 3 of 3] Extracting.
5.524 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0)))
5.524 * * [simplify]: iteration  0 :  9  enodes  (cost  11 )
5.524 * * [simplify]: iteration  1 :  12  enodes  (cost  11 )
5.525 * * [simplify]: iteration  done :  12  enodes  (cost  11 )
5.525 * [simplify]: Simplified to:
   (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0)))
5.907 * [regime-testing]: End program error score: 0.012699707776062153
5.925 * [regime-testing]: Target error score: 0.012699707776062153