19.203 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.015 * * * [progress]: [2/2] Setting up program.
0.018 * [progress]: [Phase 2 of 3] Improving.
0.018 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (/ (* x y) 2.0)
0.019 * * [simplify]: iteration  0 :  5  enodes  (cost  5 )
0.019 * * [simplify]: iteration  1 :  8  enodes  (cost  5 )
0.020 * * [simplify]: iteration  2 :  12  enodes  (cost  5 )
0.021 * * [simplify]: iteration  3 :  15  enodes  (cost  5 )
0.023 * * [simplify]: iteration  4 :  16  enodes  (cost  5 )
0.024 * * [simplify]: iteration  done :  16  enodes  (cost  5 )
0.024 * [simplify]: Simplified to:
   (/ (* x y) 2.0)
0.025 * * [progress]: iteration 1 / 4
0.025 * * * [progress]: picking best candidate
0.033 * * * * [pick]: Picked  #<alt (λ (x y) (/ (* x y) 2.0))>
0.033 * * * [progress]: localizing error
0.037 * * * [progress]: generating rewritten candidates
0.037 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.043 * * * [progress]: generating series expansions
0.043 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.043 * [approximate]: Taking taylor expansion of (* 0.5 (* x y)) in (x y) around 0
0.043 * [taylor]: Taking taylor expansion of (* 0.5 (* x y)) in y
0.043 * [taylor]: Taking taylor expansion of 0.5 in y
0.043 * [taylor]: Taking taylor expansion of (* x y) in y
0.043 * [taylor]: Taking taylor expansion of x in y
0.043 * [taylor]: Taking taylor expansion of y in y
0.043 * [taylor]: Taking taylor expansion of (* 0.5 (* x y)) in x
0.043 * [taylor]: Taking taylor expansion of 0.5 in x
0.043 * [taylor]: Taking taylor expansion of (* x y) in x
0.043 * [taylor]: Taking taylor expansion of x in x
0.043 * [taylor]: Taking taylor expansion of y in x
0.043 * [taylor]: Taking taylor expansion of (* 0.5 (* x y)) in x
0.043 * [taylor]: Taking taylor expansion of 0.5 in x
0.043 * [taylor]: Taking taylor expansion of (* x y) in x
0.043 * [taylor]: Taking taylor expansion of x in x
0.043 * [taylor]: Taking taylor expansion of y in x
0.043 * [taylor]: Taking taylor expansion of 0 in y
0.044 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.044 * [taylor]: Taking taylor expansion of 0.5 in y
0.044 * [taylor]: Taking taylor expansion of y in y
0.044 * [taylor]: Taking taylor expansion of 0 in y
0.044 * [taylor]: Taking taylor expansion of 0 in y
0.044 * [taylor]: Taking taylor expansion of 0 in y
0.044 * [approximate]: Taking taylor expansion of (/ 0.5 (* x y)) in (x y) around 0
0.044 * [taylor]: Taking taylor expansion of (/ 0.5 (* x y)) in y
0.044 * [taylor]: Taking taylor expansion of 0.5 in y
0.044 * [taylor]: Taking taylor expansion of (* x y) in y
0.044 * [taylor]: Taking taylor expansion of x in y
0.044 * [taylor]: Taking taylor expansion of y in y
0.044 * [taylor]: Taking taylor expansion of (/ 0.5 (* x y)) in x
0.044 * [taylor]: Taking taylor expansion of 0.5 in x
0.044 * [taylor]: Taking taylor expansion of (* x y) in x
0.044 * [taylor]: Taking taylor expansion of x in x
0.045 * [taylor]: Taking taylor expansion of y in x
0.045 * [taylor]: Taking taylor expansion of (/ 0.5 (* x y)) in x
0.045 * [taylor]: Taking taylor expansion of 0.5 in x
0.045 * [taylor]: Taking taylor expansion of (* x y) in x
0.045 * [taylor]: Taking taylor expansion of x in x
0.045 * [taylor]: Taking taylor expansion of y in x
0.045 * [taylor]: Taking taylor expansion of (/ 0.5 y) in y
0.045 * [taylor]: Taking taylor expansion of 0.5 in y
0.045 * [taylor]: Taking taylor expansion of y in y
0.045 * [taylor]: Taking taylor expansion of 0 in y
0.045 * [taylor]: Taking taylor expansion of 0 in y
0.045 * [taylor]: Taking taylor expansion of 0 in y
0.046 * [approximate]: Taking taylor expansion of (/ 0.5 (* x y)) in (x y) around 0
0.046 * [taylor]: Taking taylor expansion of (/ 0.5 (* x y)) in y
0.046 * [taylor]: Taking taylor expansion of 0.5 in y
0.046 * [taylor]: Taking taylor expansion of (* x y) in y
0.046 * [taylor]: Taking taylor expansion of x in y
0.046 * [taylor]: Taking taylor expansion of y in y
0.046 * [taylor]: Taking taylor expansion of (/ 0.5 (* x y)) in x
0.046 * [taylor]: Taking taylor expansion of 0.5 in x
0.046 * [taylor]: Taking taylor expansion of (* x y) in x
0.046 * [taylor]: Taking taylor expansion of x in x
0.046 * [taylor]: Taking taylor expansion of y in x
0.046 * [taylor]: Taking taylor expansion of (/ 0.5 (* x y)) in x
0.046 * [taylor]: Taking taylor expansion of 0.5 in x
0.046 * [taylor]: Taking taylor expansion of (* x y) in x
0.046 * [taylor]: Taking taylor expansion of x in x
0.046 * [taylor]: Taking taylor expansion of y in x
0.046 * [taylor]: Taking taylor expansion of (/ 0.5 y) in y
0.046 * [taylor]: Taking taylor expansion of 0.5 in y
0.046 * [taylor]: Taking taylor expansion of y in y
0.046 * [taylor]: Taking taylor expansion of 0 in y
0.046 * [taylor]: Taking taylor expansion of 0 in y
0.047 * [taylor]: Taking taylor expansion of 0 in y
0.047 * * * [progress]: simplifying candidates
0.047 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (+ (log x) (log y)) (log 2.0))
  (- (log (* x y)) (log 2.0))
  (log (/ (* x y) 2.0))
  (exp (/ (* x y) 2.0))
  (/ (* (* (* x x) x) (* (* y y) y)) (* (* 2.0 2.0) 2.0))
  (/ (* (* (* x y) (* x y)) (* x y)) (* (* 2.0 2.0) 2.0))
  (* (cbrt (/ (* x y) 2.0)) (cbrt (/ (* x y) 2.0)))
  (cbrt (/ (* x y) 2.0))
  (* (* (/ (* x y) 2.0) (/ (* x y) 2.0)) (/ (* x y) 2.0))
  (sqrt (/ (* x y) 2.0))
  (sqrt (/ (* x y) 2.0))
  (neg (* x y))
  (neg 2.0)
  (/ x (* (cbrt 2.0) (cbrt 2.0)))
  (/ y (cbrt 2.0))
  (/ x (sqrt 2.0))
  (/ y (sqrt 2.0))
  (/ x 1)
  (/ y 2.0)
  (/ 1 2.0)
  (/ 2.0 (* x y))
  (/ (* x y) (* (cbrt 2.0) (cbrt 2.0)))
  (/ (* x y) (sqrt 2.0))
  (/ (* x y) 1)
  (/ 2.0 y)
  (* 0.5 (* x y))
  (* 0.5 (* x y))
  (* 0.5 (* x y))
0.049 * * [simplify]: iteration  0 :  50  enodes  (cost  186 )
0.055 * * [simplify]: iteration  1 :  122  enodes  (cost  182 )
0.076 * * [simplify]: iteration  2 :  442  enodes  (cost  154 )
0.239 * * [simplify]: iteration  3 :  2021  enodes  (cost  149 )
0.605 * * [simplify]: iteration  done :  5001  enodes  (cost  149 )
0.605 * [simplify]: Simplified to:
   (log (/ (* x y) 2.0))
  (log (/ (* x y) 2.0))
  (log (/ (* x y) 2.0))
  (exp (/ (* x y) 2.0))
  (pow (/ (* x y) 2.0) 3)
  (pow (/ (* x y) 2.0) 3)
  (* (cbrt (/ (* x y) 2.0)) (cbrt (/ (* x y) 2.0)))
  (cbrt (/ (* x y) 2.0))
  (pow (/ (* x y) 2.0) 3)
  (sqrt (/ (* x y) 2.0))
  (sqrt (/ (* x y) 2.0))
  (neg (* x y))
  (neg 2.0)
  (/ x (* (cbrt 2.0) (cbrt 2.0)))
  (/ y (cbrt 2.0))
  (/ x (sqrt 2.0))
  (/ y (sqrt 2.0))
  x
  (/ y 2.0)
  (/ 1 2.0)
  (/ 2.0 (* x y))
  (/ (* x y) (* (cbrt 2.0) (cbrt 2.0)))
  (/ (* x y) (sqrt 2.0))
  (* x y)
  (/ 2.0 y)
  (* 0.5 (* x y))
  (* 0.5 (* x y))
  (* 0.5 (* x y))
0.605 * * * [progress]: adding candidates to table
0.630 * * [progress]: iteration 2 / 4
0.630 * * * [progress]: picking best candidate
0.632 * * * * [pick]: Picked  #<alt (λ (x y) (* x (/ y 2.0)))>
0.632 * * * [progress]: localizing error
0.635 * * * [progress]: generating rewritten candidates
0.635 * * * [progress]: generating series expansions
0.635 * * * [progress]: simplifying candidates
0.636 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
0.636 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.636 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
0.636 * [simplify]: Simplified to:
   
0.636 * * * [progress]: adding candidates to table
0.636 * [progress]: [Phase 3 of 3] Extracting.
0.639 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* x (/ y 2.0))
0.639 * * [simplify]: iteration  0 :  5  enodes  (cost  5 )
0.639 * * [simplify]: iteration  1 :  6  enodes  (cost  5 )
0.639 * * [simplify]: iteration  done :  6  enodes  (cost  5 )
0.640 * [simplify]: Simplified to:
   (* x (/ y 2.0))
1.288 * [regime-testing]: End program error score: 0.0009241551972470008