16.687 * [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 )
0.018 * * [simplify]: iteration  2 :  47  enodes  (cost  9 )
0.025 * * [simplify]: iteration  3 :  102  enodes  (cost  9 )
0.037 * * [simplify]: iteration  4 :  146  enodes  (cost  9 )
0.057 * * [simplify]: iteration  5 :  171  enodes  (cost  9 )
0.075 * * [simplify]: iteration  6 :  186  enodes  (cost  9 )
0.094 * * [simplify]: iteration  7 :  191  enodes  (cost  9 )
0.115 * * [simplify]: iteration  done :  191  enodes  (cost  9 )
0.115 * [simplify]: Simplified to:
   (/ (- x y) (* (* x 2.0) y))
0.115 * * [progress]: iteration 1 / 4
0.115 * * * [progress]: picking best candidate
0.117 * * * * [pick]: Picked  #<alt (λ (x y) (/ (- x y) (* (* x 2.0) y)))>
0.117 * * * [progress]: localizing error
0.123 * * * [progress]: generating rewritten candidates
0.123 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.137 * * * [progress]: generating series expansions
0.137 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.137 * [approximate]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in (x y) around 0
0.137 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in y
0.137 * [taylor]: Taking taylor expansion of 0.5 in y
0.137 * [taylor]: Taking taylor expansion of (/ (- x y) (* x y)) in y
0.137 * [taylor]: Taking taylor expansion of (- x y) in y
0.137 * [taylor]: Taking taylor expansion of x in y
0.137 * [taylor]: Taking taylor expansion of y in y
0.137 * [taylor]: Taking taylor expansion of (* x y) in y
0.137 * [taylor]: Taking taylor expansion of x in y
0.137 * [taylor]: Taking taylor expansion of y in y
0.138 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in x
0.138 * [taylor]: Taking taylor expansion of 0.5 in x
0.138 * [taylor]: Taking taylor expansion of (/ (- x y) (* x y)) in x
0.138 * [taylor]: Taking taylor expansion of (- x y) in x
0.138 * [taylor]: Taking taylor expansion of x in x
0.138 * [taylor]: Taking taylor expansion of y in x
0.138 * [taylor]: Taking taylor expansion of (* x y) in x
0.138 * [taylor]: Taking taylor expansion of x in x
0.138 * [taylor]: Taking taylor expansion of y in x
0.138 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in x
0.138 * [taylor]: Taking taylor expansion of 0.5 in x
0.138 * [taylor]: Taking taylor expansion of (/ (- x y) (* x y)) in x
0.138 * [taylor]: Taking taylor expansion of (- x y) in x
0.138 * [taylor]: Taking taylor expansion of x in x
0.138 * [taylor]: Taking taylor expansion of y in x
0.138 * [taylor]: Taking taylor expansion of (* x y) in x
0.138 * [taylor]: Taking taylor expansion of x in x
0.138 * [taylor]: Taking taylor expansion of y in x
0.139 * [taylor]: Taking taylor expansion of -0.5 in y
0.140 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.140 * [taylor]: Taking taylor expansion of 0.5 in y
0.140 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.140 * [taylor]: Taking taylor expansion of y in y
0.143 * [taylor]: Taking taylor expansion of 0 in y
0.146 * [taylor]: Taking taylor expansion of 0 in y
0.150 * [taylor]: Taking taylor expansion of 0 in y
0.150 * [approximate]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in (x y) around 0
0.150 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in y
0.150 * [taylor]: Taking taylor expansion of 0.5 in y
0.150 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (* x y)) in y
0.150 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in y
0.150 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.150 * [taylor]: Taking taylor expansion of x in y
0.150 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.150 * [taylor]: Taking taylor expansion of y in y
0.150 * [taylor]: Taking taylor expansion of (* x y) in y
0.150 * [taylor]: Taking taylor expansion of x in y
0.150 * [taylor]: Taking taylor expansion of y in y
0.150 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in x
0.150 * [taylor]: Taking taylor expansion of 0.5 in x
0.150 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (* x y)) in x
0.150 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.150 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.150 * [taylor]: Taking taylor expansion of x in x
0.151 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.151 * [taylor]: Taking taylor expansion of y in x
0.151 * [taylor]: Taking taylor expansion of (* x y) in x
0.151 * [taylor]: Taking taylor expansion of x in x
0.151 * [taylor]: Taking taylor expansion of y in x
0.151 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in x
0.151 * [taylor]: Taking taylor expansion of 0.5 in x
0.151 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (* x y)) in x
0.151 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.151 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.151 * [taylor]: Taking taylor expansion of x in x
0.151 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.151 * [taylor]: Taking taylor expansion of y in x
0.151 * [taylor]: Taking taylor expansion of (* x y) in x
0.151 * [taylor]: Taking taylor expansion of x in x
0.151 * [taylor]: Taking taylor expansion of y in x
0.152 * [taylor]: Taking taylor expansion of 0 in y
0.153 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.153 * [taylor]: Taking taylor expansion of 0.5 in y
0.153 * [taylor]: Taking taylor expansion of y in y
0.156 * [taylor]: Taking taylor expansion of (- 0.5) in y
0.156 * [taylor]: Taking taylor expansion of 0.5 in y
0.160 * [taylor]: Taking taylor expansion of 0 in y
0.165 * [taylor]: Taking taylor expansion of 0 in y
0.171 * [taylor]: Taking taylor expansion of 0 in y
0.174 * [approximate]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in (x y) around 0
0.174 * [taylor]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in y
0.174 * [taylor]: Taking taylor expansion of 0.5 in y
0.174 * [taylor]: Taking taylor expansion of (* x (* y (- (/ 1 y) (/ 1 x)))) in y
0.174 * [taylor]: Taking taylor expansion of x in y
0.174 * [taylor]: Taking taylor expansion of (* y (- (/ 1 y) (/ 1 x))) in y
0.174 * [taylor]: Taking taylor expansion of y in y
0.175 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in y
0.175 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.175 * [taylor]: Taking taylor expansion of y in y
0.175 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.175 * [taylor]: Taking taylor expansion of x in y
0.175 * [taylor]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in x
0.175 * [taylor]: Taking taylor expansion of 0.5 in x
0.175 * [taylor]: Taking taylor expansion of (* x (* y (- (/ 1 y) (/ 1 x)))) in x
0.175 * [taylor]: Taking taylor expansion of x in x
0.175 * [taylor]: Taking taylor expansion of (* y (- (/ 1 y) (/ 1 x))) in x
0.175 * [taylor]: Taking taylor expansion of y in x
0.175 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.175 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.175 * [taylor]: Taking taylor expansion of y in x
0.175 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.175 * [taylor]: Taking taylor expansion of x in x
0.175 * [taylor]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in x
0.175 * [taylor]: Taking taylor expansion of 0.5 in x
0.175 * [taylor]: Taking taylor expansion of (* x (* y (- (/ 1 y) (/ 1 x)))) in x
0.175 * [taylor]: Taking taylor expansion of x in x
0.175 * [taylor]: Taking taylor expansion of (* y (- (/ 1 y) (/ 1 x))) in x
0.176 * [taylor]: Taking taylor expansion of y in x
0.176 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.176 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.176 * [taylor]: Taking taylor expansion of y in x
0.176 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.176 * [taylor]: Taking taylor expansion of x in x
0.177 * [taylor]: Taking taylor expansion of 0 in y
0.178 * [taylor]: Taking taylor expansion of (- (* 0.5 y)) in y
0.178 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.178 * [taylor]: Taking taylor expansion of 0.5 in y
0.178 * [taylor]: Taking taylor expansion of y in y
0.181 * [taylor]: Taking taylor expansion of 0.5 in y
0.184 * [taylor]: Taking taylor expansion of 0 in y
0.189 * [taylor]: Taking taylor expansion of 0 in y
0.194 * [taylor]: Taking taylor expansion of 0 in y
0.195 * * * [progress]: simplifying candidates
0.195 * [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)))
0.197 * * [simplify]: iteration  0 :  82  enodes  (cost  447 )
0.209 * * [simplify]: iteration  1 :  236  enodes  (cost  433 )
0.262 * * [simplify]: iteration  2 :  903  enodes  (cost  353 )
1.134 * * [simplify]: iteration  3 :  4564  enodes  (cost  351 )
2.109 * * [simplify]: iteration  done :  5000  enodes  (cost  351 )
2.109 * [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))
2.109 * * * [progress]: adding candidates to table
2.164 * * [progress]: iteration 2 / 4
2.164 * * * [progress]: picking best candidate
2.166 * * * * [pick]: Picked  #<alt (λ (x y) (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))))>
2.166 * * * [progress]: localizing error
2.174 * * * [progress]: generating rewritten candidates
2.174 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
2.217 * * * [progress]: generating series expansions
2.217 * * * * [progress]: [ 1 / 1 ] generating series at (2)
2.218 * [approximate]: Taking taylor expansion of (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in (y x) around 0
2.218 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
2.218 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
2.218 * [taylor]: Taking taylor expansion of 0.5 in x
2.218 * [taylor]: Taking taylor expansion of (/ 1 y) in x
2.218 * [taylor]: Taking taylor expansion of y in x
2.218 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
2.218 * [taylor]: Taking taylor expansion of 0.5 in x
2.218 * [taylor]: Taking taylor expansion of (/ 1 x) in x
2.218 * [taylor]: Taking taylor expansion of x in x
2.219 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
2.219 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
2.219 * [taylor]: Taking taylor expansion of 0.5 in y
2.219 * [taylor]: Taking taylor expansion of (/ 1 y) in y
2.219 * [taylor]: Taking taylor expansion of y in y
2.219 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
2.219 * [taylor]: Taking taylor expansion of 0.5 in y
2.219 * [taylor]: Taking taylor expansion of (/ 1 x) in y
2.219 * [taylor]: Taking taylor expansion of x in y
2.219 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
2.219 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
2.219 * [taylor]: Taking taylor expansion of 0.5 in y
2.219 * [taylor]: Taking taylor expansion of (/ 1 y) in y
2.219 * [taylor]: Taking taylor expansion of y in y
2.219 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
2.219 * [taylor]: Taking taylor expansion of 0.5 in y
2.219 * [taylor]: Taking taylor expansion of (/ 1 x) in y
2.219 * [taylor]: Taking taylor expansion of x in y
2.220 * [taylor]: Taking taylor expansion of 0.5 in x
2.221 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 x))) in x
2.221 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
2.221 * [taylor]: Taking taylor expansion of 0.5 in x
2.221 * [taylor]: Taking taylor expansion of (/ 1 x) in x
2.221 * [taylor]: Taking taylor expansion of x in x
2.224 * [taylor]: Taking taylor expansion of 0 in x
2.230 * [taylor]: Taking taylor expansion of 0 in x
2.234 * [taylor]: Taking taylor expansion of 0 in x
2.234 * [approximate]: Taking taylor expansion of (- (* 0.5 y) (* 0.5 x)) in (y x) around 0
2.234 * [taylor]: Taking taylor expansion of (- (* 0.5 y) (* 0.5 x)) in x
2.234 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
2.234 * [taylor]: Taking taylor expansion of 0.5 in x
2.234 * [taylor]: Taking taylor expansion of y in x
2.234 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
2.235 * [taylor]: Taking taylor expansion of 0.5 in x
2.235 * [taylor]: Taking taylor expansion of x in x
2.235 * [taylor]: Taking taylor expansion of (- (* 0.5 y) (* 0.5 x)) in y
2.235 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
2.235 * [taylor]: Taking taylor expansion of 0.5 in y
2.235 * [taylor]: Taking taylor expansion of y in y
2.235 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
2.235 * [taylor]: Taking taylor expansion of 0.5 in y
2.235 * [taylor]: Taking taylor expansion of x in y
2.235 * [taylor]: Taking taylor expansion of (- (* 0.5 y) (* 0.5 x)) in y
2.235 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
2.235 * [taylor]: Taking taylor expansion of 0.5 in y
2.235 * [taylor]: Taking taylor expansion of y in y
2.235 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
2.235 * [taylor]: Taking taylor expansion of 0.5 in y
2.235 * [taylor]: Taking taylor expansion of x in y
2.235 * [taylor]: Taking taylor expansion of (- (* 0.5 x)) in x
2.235 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
2.235 * [taylor]: Taking taylor expansion of 0.5 in x
2.235 * [taylor]: Taking taylor expansion of x in x
2.237 * [taylor]: Taking taylor expansion of 0.5 in x
2.240 * [taylor]: Taking taylor expansion of 0 in x
2.243 * [taylor]: Taking taylor expansion of 0 in x
2.243 * [approximate]: Taking taylor expansion of (- (* 0.5 x) (* 0.5 y)) in (y x) around 0
2.243 * [taylor]: Taking taylor expansion of (- (* 0.5 x) (* 0.5 y)) in x
2.243 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
2.243 * [taylor]: Taking taylor expansion of 0.5 in x
2.243 * [taylor]: Taking taylor expansion of x in x
2.243 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
2.244 * [taylor]: Taking taylor expansion of 0.5 in x
2.244 * [taylor]: Taking taylor expansion of y in x
2.244 * [taylor]: Taking taylor expansion of (- (* 0.5 x) (* 0.5 y)) in y
2.244 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
2.244 * [taylor]: Taking taylor expansion of 0.5 in y
2.244 * [taylor]: Taking taylor expansion of x in y
2.244 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
2.244 * [taylor]: Taking taylor expansion of 0.5 in y
2.244 * [taylor]: Taking taylor expansion of y in y
2.244 * [taylor]: Taking taylor expansion of (- (* 0.5 x) (* 0.5 y)) in y
2.244 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
2.244 * [taylor]: Taking taylor expansion of 0.5 in y
2.244 * [taylor]: Taking taylor expansion of x in y
2.244 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
2.244 * [taylor]: Taking taylor expansion of 0.5 in y
2.244 * [taylor]: Taking taylor expansion of y in y
2.244 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
2.244 * [taylor]: Taking taylor expansion of 0.5 in x
2.244 * [taylor]: Taking taylor expansion of x in x
2.247 * [taylor]: Taking taylor expansion of (- 0.5) in x
2.247 * [taylor]: Taking taylor expansion of 0.5 in x
2.250 * [taylor]: Taking taylor expansion of 0 in x
2.252 * [taylor]: Taking taylor expansion of 0 in x
2.253 * * * [progress]: simplifying candidates
2.253 * [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)))
2.255 * * [simplify]: iteration  0 :  60  enodes  (cost  412 )
2.266 * * [simplify]: iteration  1 :  144  enodes  (cost  393 )
2.294 * * [simplify]: iteration  2 :  356  enodes  (cost  357 )
2.519 * * [simplify]: iteration  3 :  1224  enodes  (cost  351 )
3.379 * * [simplify]: iteration  4 :  3936  enodes  (cost  351 )
4.445 * * [simplify]: iteration  done :  5001  enodes  (cost  351 )
4.446 * [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) x) 2.0) x) (/ (+ (/ (/ 1 2.0) y) (/ 1 (* x 2.0))) (* y 2.0)))
  (/ -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))
4.446 * * * [progress]: adding candidates to table
4.491 * * [progress]: iteration 3 / 4
4.491 * * * [progress]: picking best candidate
4.492 * * * * [pick]: Picked  #<alt (λ (x y) (/ (/ (- x y) (* x 2.0)) y))>
4.492 * * * [progress]: localizing error
4.498 * * * [progress]: generating rewritten candidates
4.498 * * * * [progress]: [ 1 / 2 ] rewriting at (2)
4.510 * * * * [progress]: [ 2 / 2 ] rewriting at (2 1)
4.522 * * * [progress]: generating series expansions
4.523 * * * * [progress]: [ 1 / 2 ] generating series at (2)
4.523 * [approximate]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in (x y) around 0
4.523 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in y
4.523 * [taylor]: Taking taylor expansion of 0.5 in y
4.523 * [taylor]: Taking taylor expansion of (/ (- x y) (* x y)) in y
4.523 * [taylor]: Taking taylor expansion of (- x y) in y
4.523 * [taylor]: Taking taylor expansion of x in y
4.523 * [taylor]: Taking taylor expansion of y in y
4.523 * [taylor]: Taking taylor expansion of (* x y) in y
4.523 * [taylor]: Taking taylor expansion of x in y
4.523 * [taylor]: Taking taylor expansion of y in y
4.524 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in x
4.524 * [taylor]: Taking taylor expansion of 0.5 in x
4.524 * [taylor]: Taking taylor expansion of (/ (- x y) (* x y)) in x
4.524 * [taylor]: Taking taylor expansion of (- x y) in x
4.524 * [taylor]: Taking taylor expansion of x in x
4.524 * [taylor]: Taking taylor expansion of y in x
4.524 * [taylor]: Taking taylor expansion of (* x y) in x
4.524 * [taylor]: Taking taylor expansion of x in x
4.524 * [taylor]: Taking taylor expansion of y in x
4.524 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in x
4.524 * [taylor]: Taking taylor expansion of 0.5 in x
4.524 * [taylor]: Taking taylor expansion of (/ (- x y) (* x y)) in x
4.524 * [taylor]: Taking taylor expansion of (- x y) in x
4.524 * [taylor]: Taking taylor expansion of x in x
4.524 * [taylor]: Taking taylor expansion of y in x
4.524 * [taylor]: Taking taylor expansion of (* x y) in x
4.524 * [taylor]: Taking taylor expansion of x in x
4.524 * [taylor]: Taking taylor expansion of y in x
4.525 * [taylor]: Taking taylor expansion of -0.5 in y
4.527 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
4.527 * [taylor]: Taking taylor expansion of 0.5 in y
4.527 * [taylor]: Taking taylor expansion of (/ 1 y) in y
4.527 * [taylor]: Taking taylor expansion of y in y
4.529 * [taylor]: Taking taylor expansion of 0 in y
4.532 * [taylor]: Taking taylor expansion of 0 in y
4.536 * [taylor]: Taking taylor expansion of 0 in y
4.536 * [approximate]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in (x y) around 0
4.536 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in y
4.536 * [taylor]: Taking taylor expansion of 0.5 in y
4.536 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (* x y)) in y
4.536 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in y
4.536 * [taylor]: Taking taylor expansion of (/ 1 x) in y
4.536 * [taylor]: Taking taylor expansion of x in y
4.536 * [taylor]: Taking taylor expansion of (/ 1 y) in y
4.536 * [taylor]: Taking taylor expansion of y in y
4.537 * [taylor]: Taking taylor expansion of (* x y) in y
4.537 * [taylor]: Taking taylor expansion of x in y
4.537 * [taylor]: Taking taylor expansion of y in y
4.537 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in x
4.537 * [taylor]: Taking taylor expansion of 0.5 in x
4.537 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (* x y)) in x
4.537 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
4.537 * [taylor]: Taking taylor expansion of (/ 1 x) in x
4.537 * [taylor]: Taking taylor expansion of x in x
4.537 * [taylor]: Taking taylor expansion of (/ 1 y) in x
4.537 * [taylor]: Taking taylor expansion of y in x
4.537 * [taylor]: Taking taylor expansion of (* x y) in x
4.537 * [taylor]: Taking taylor expansion of x in x
4.537 * [taylor]: Taking taylor expansion of y in x
4.537 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in x
4.537 * [taylor]: Taking taylor expansion of 0.5 in x
4.537 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (* x y)) in x
4.537 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
4.537 * [taylor]: Taking taylor expansion of (/ 1 x) in x
4.537 * [taylor]: Taking taylor expansion of x in x
4.538 * [taylor]: Taking taylor expansion of (/ 1 y) in x
4.538 * [taylor]: Taking taylor expansion of y in x
4.538 * [taylor]: Taking taylor expansion of (* x y) in x
4.538 * [taylor]: Taking taylor expansion of x in x
4.538 * [taylor]: Taking taylor expansion of y in x
4.539 * [taylor]: Taking taylor expansion of 0 in y
4.540 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
4.540 * [taylor]: Taking taylor expansion of 0.5 in y
4.540 * [taylor]: Taking taylor expansion of y in y
4.542 * [taylor]: Taking taylor expansion of (- 0.5) in y
4.542 * [taylor]: Taking taylor expansion of 0.5 in y
4.546 * [taylor]: Taking taylor expansion of 0 in y
4.551 * [taylor]: Taking taylor expansion of 0 in y
4.559 * [taylor]: Taking taylor expansion of 0 in y
4.560 * [approximate]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in (x y) around 0
4.560 * [taylor]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in y
4.560 * [taylor]: Taking taylor expansion of 0.5 in y
4.560 * [taylor]: Taking taylor expansion of (* x (* y (- (/ 1 y) (/ 1 x)))) in y
4.560 * [taylor]: Taking taylor expansion of x in y
4.560 * [taylor]: Taking taylor expansion of (* y (- (/ 1 y) (/ 1 x))) in y
4.560 * [taylor]: Taking taylor expansion of y in y
4.560 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in y
4.560 * [taylor]: Taking taylor expansion of (/ 1 y) in y
4.560 * [taylor]: Taking taylor expansion of y in y
4.560 * [taylor]: Taking taylor expansion of (/ 1 x) in y
4.560 * [taylor]: Taking taylor expansion of x in y
4.560 * [taylor]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in x
4.560 * [taylor]: Taking taylor expansion of 0.5 in x
4.560 * [taylor]: Taking taylor expansion of (* x (* y (- (/ 1 y) (/ 1 x)))) in x
4.560 * [taylor]: Taking taylor expansion of x in x
4.560 * [taylor]: Taking taylor expansion of (* y (- (/ 1 y) (/ 1 x))) in x
4.560 * [taylor]: Taking taylor expansion of y in x
4.560 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
4.560 * [taylor]: Taking taylor expansion of (/ 1 y) in x
4.560 * [taylor]: Taking taylor expansion of y in x
4.560 * [taylor]: Taking taylor expansion of (/ 1 x) in x
4.560 * [taylor]: Taking taylor expansion of x in x
4.561 * [taylor]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in x
4.561 * [taylor]: Taking taylor expansion of 0.5 in x
4.561 * [taylor]: Taking taylor expansion of (* x (* y (- (/ 1 y) (/ 1 x)))) in x
4.561 * [taylor]: Taking taylor expansion of x in x
4.561 * [taylor]: Taking taylor expansion of (* y (- (/ 1 y) (/ 1 x))) in x
4.561 * [taylor]: Taking taylor expansion of y in x
4.561 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
4.561 * [taylor]: Taking taylor expansion of (/ 1 y) in x
4.561 * [taylor]: Taking taylor expansion of y in x
4.561 * [taylor]: Taking taylor expansion of (/ 1 x) in x
4.561 * [taylor]: Taking taylor expansion of x in x
4.562 * [taylor]: Taking taylor expansion of 0 in y
4.564 * [taylor]: Taking taylor expansion of (- (* 0.5 y)) in y
4.564 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
4.564 * [taylor]: Taking taylor expansion of 0.5 in y
4.564 * [taylor]: Taking taylor expansion of y in y
4.566 * [taylor]: Taking taylor expansion of 0.5 in y
4.570 * [taylor]: Taking taylor expansion of 0 in y
4.575 * [taylor]: Taking taylor expansion of 0 in y
4.581 * [taylor]: Taking taylor expansion of 0 in y
4.581 * * * * [progress]: [ 2 / 2 ] generating series at (2 1)
4.582 * [approximate]: Taking taylor expansion of (* 0.5 (/ (- x y) x)) in (x y) around 0
4.582 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) x)) in y
4.582 * [taylor]: Taking taylor expansion of 0.5 in y
4.582 * [taylor]: Taking taylor expansion of (/ (- x y) x) in y
4.582 * [taylor]: Taking taylor expansion of (- x y) in y
4.582 * [taylor]: Taking taylor expansion of x in y
4.582 * [taylor]: Taking taylor expansion of y in y
4.582 * [taylor]: Taking taylor expansion of x in y
4.582 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) x)) in x
4.582 * [taylor]: Taking taylor expansion of 0.5 in x
4.582 * [taylor]: Taking taylor expansion of (/ (- x y) x) in x
4.582 * [taylor]: Taking taylor expansion of (- x y) in x
4.582 * [taylor]: Taking taylor expansion of x in x
4.582 * [taylor]: Taking taylor expansion of y in x
4.582 * [taylor]: Taking taylor expansion of x in x
4.582 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) x)) in x
4.582 * [taylor]: Taking taylor expansion of 0.5 in x
4.582 * [taylor]: Taking taylor expansion of (/ (- x y) x) in x
4.582 * [taylor]: Taking taylor expansion of (- x y) in x
4.582 * [taylor]: Taking taylor expansion of x in x
4.582 * [taylor]: Taking taylor expansion of y in x
4.582 * [taylor]: Taking taylor expansion of x in x
4.582 * [taylor]: Taking taylor expansion of (* -0.5 y) in y
4.582 * [taylor]: Taking taylor expansion of -0.5 in y
4.582 * [taylor]: Taking taylor expansion of y in y
4.584 * [taylor]: Taking taylor expansion of 0.5 in y
4.587 * [taylor]: Taking taylor expansion of 0 in y
4.590 * [taylor]: Taking taylor expansion of 0 in y
4.590 * [approximate]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) x)) in (x y) around 0
4.590 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) x)) in y
4.590 * [taylor]: Taking taylor expansion of 0.5 in y
4.590 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) x) in y
4.590 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in y
4.590 * [taylor]: Taking taylor expansion of (/ 1 x) in y
4.590 * [taylor]: Taking taylor expansion of x in y
4.590 * [taylor]: Taking taylor expansion of (/ 1 y) in y
4.590 * [taylor]: Taking taylor expansion of y in y
4.591 * [taylor]: Taking taylor expansion of x in y
4.591 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) x)) in x
4.591 * [taylor]: Taking taylor expansion of 0.5 in x
4.591 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) x) in x
4.591 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
4.591 * [taylor]: Taking taylor expansion of (/ 1 x) in x
4.591 * [taylor]: Taking taylor expansion of x in x
4.591 * [taylor]: Taking taylor expansion of (/ 1 y) in x
4.591 * [taylor]: Taking taylor expansion of y in x
4.591 * [taylor]: Taking taylor expansion of x in x
4.591 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) x)) in x
4.591 * [taylor]: Taking taylor expansion of 0.5 in x
4.591 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) x) in x
4.591 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
4.591 * [taylor]: Taking taylor expansion of (/ 1 x) in x
4.591 * [taylor]: Taking taylor expansion of x in x
4.592 * [taylor]: Taking taylor expansion of (/ 1 y) in x
4.592 * [taylor]: Taking taylor expansion of y in x
4.592 * [taylor]: Taking taylor expansion of x in x
4.593 * [taylor]: Taking taylor expansion of 0 in y
4.594 * [taylor]: Taking taylor expansion of 0.5 in y
4.597 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y))) in y
4.597 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
4.597 * [taylor]: Taking taylor expansion of 0.5 in y
4.597 * [taylor]: Taking taylor expansion of (/ 1 y) in y
4.597 * [taylor]: Taking taylor expansion of y in y
4.600 * [taylor]: Taking taylor expansion of 0 in y
4.604 * [taylor]: Taking taylor expansion of 0 in y
4.606 * [approximate]: Taking taylor expansion of (* -0.5 (* x (- (/ 1 y) (/ 1 x)))) in (x y) around 0
4.606 * [taylor]: Taking taylor expansion of (* -0.5 (* x (- (/ 1 y) (/ 1 x)))) in y
4.606 * [taylor]: Taking taylor expansion of -0.5 in y
4.606 * [taylor]: Taking taylor expansion of (* x (- (/ 1 y) (/ 1 x))) in y
4.606 * [taylor]: Taking taylor expansion of x in y
4.606 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in y
4.606 * [taylor]: Taking taylor expansion of (/ 1 y) in y
4.606 * [taylor]: Taking taylor expansion of y in y
4.606 * [taylor]: Taking taylor expansion of (/ 1 x) in y
4.606 * [taylor]: Taking taylor expansion of x in y
4.606 * [taylor]: Taking taylor expansion of (* -0.5 (* x (- (/ 1 y) (/ 1 x)))) in x
4.606 * [taylor]: Taking taylor expansion of -0.5 in x
4.606 * [taylor]: Taking taylor expansion of (* x (- (/ 1 y) (/ 1 x))) in x
4.606 * [taylor]: Taking taylor expansion of x in x
4.606 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
4.606 * [taylor]: Taking taylor expansion of (/ 1 y) in x
4.606 * [taylor]: Taking taylor expansion of y in x
4.606 * [taylor]: Taking taylor expansion of (/ 1 x) in x
4.606 * [taylor]: Taking taylor expansion of x in x
4.606 * [taylor]: Taking taylor expansion of (* -0.5 (* x (- (/ 1 y) (/ 1 x)))) in x
4.606 * [taylor]: Taking taylor expansion of -0.5 in x
4.606 * [taylor]: Taking taylor expansion of (* x (- (/ 1 y) (/ 1 x))) in x
4.606 * [taylor]: Taking taylor expansion of x in x
4.607 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
4.607 * [taylor]: Taking taylor expansion of (/ 1 y) in x
4.607 * [taylor]: Taking taylor expansion of y in x
4.607 * [taylor]: Taking taylor expansion of (/ 1 x) in x
4.607 * [taylor]: Taking taylor expansion of x in x
4.608 * [taylor]: Taking taylor expansion of 0 in y
4.610 * [taylor]: Taking taylor expansion of 0.5 in y
4.612 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y))) in y
4.612 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
4.612 * [taylor]: Taking taylor expansion of 0.5 in y
4.612 * [taylor]: Taking taylor expansion of (/ 1 y) in y
4.612 * [taylor]: Taking taylor expansion of y in y
4.616 * [taylor]: Taking taylor expansion of 0 in y
4.620 * [taylor]: Taking taylor expansion of 0 in y
4.622 * * * [progress]: simplifying candidates
4.623 * [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) (* x 2.0))) (log 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 2.0)) (/ (- x y) (* x 2.0))) (/ (- x y) (* x 2.0))) (* (* y y) 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) (* x 2.0))) (cbrt (/ (- x y) (* x 2.0)))) (* (cbrt y) (cbrt y)))
  (/ (cbrt (/ (- x y) (* x 2.0))) (cbrt y))
  (/ (* (cbrt (/ (- x y) (* x 2.0))) (cbrt (/ (- x y) (* x 2.0)))) (sqrt y))
  (/ (cbrt (/ (- x y) (* x 2.0))) (sqrt y))
  (/ (* (cbrt (/ (- x y) (* x 2.0))) (cbrt (/ (- x y) (* x 2.0)))) 1)
  (/ (cbrt (/ (- x y) (* x 2.0))) y)
  (/ (sqrt (/ (- x y) (* x 2.0))) (* (cbrt y) (cbrt y)))
  (/ (sqrt (/ (- x y) (* x 2.0))) (cbrt y))
  (/ (sqrt (/ (- x y) (* x 2.0))) (sqrt y))
  (/ (sqrt (/ (- x y) (* x 2.0))) (sqrt y))
  (/ (sqrt (/ (- x y) (* x 2.0))) 1)
  (/ (sqrt (/ (- x y) (* x 2.0))) y)
  (/ (/ (* (cbrt (- x y)) (cbrt (- x y))) x) (* (cbrt y) (cbrt y)))
  (/ (/ (cbrt (- x y)) 2.0) (cbrt y))
  (/ (/ (* (cbrt (- x y)) (cbrt (- x y))) x) (sqrt y))
  (/ (/ (cbrt (- x y)) 2.0) (sqrt y))
  (/ (/ (* (cbrt (- x y)) (cbrt (- x y))) x) 1)
  (/ (/ (cbrt (- x y)) 2.0) y)
  (/ (/ (sqrt (- x y)) x) (* (cbrt y) (cbrt y)))
  (/ (/ (sqrt (- x y)) 2.0) (cbrt y))
  (/ (/ (sqrt (- x y)) x) (sqrt y))
  (/ (/ (sqrt (- x y)) 2.0) (sqrt y))
  (/ (/ (sqrt (- x y)) x) 1)
  (/ (/ (sqrt (- x y)) 2.0) y)
  (/ (/ 1 x) (* (cbrt y) (cbrt y)))
  (/ (/ (- x y) 2.0) (cbrt y))
  (/ (/ 1 x) (sqrt y))
  (/ (/ (- x y) 2.0) (sqrt y))
  (/ (/ 1 x) 1)
  (/ (/ (- x y) 2.0) y)
  (/ (/ (+ (sqrt x) (sqrt y)) x) (* (cbrt y) (cbrt y)))
  (/ (/ (- (sqrt x) (sqrt y)) 2.0) (cbrt y))
  (/ (/ (+ (sqrt x) (sqrt y)) x) (sqrt y))
  (/ (/ (- (sqrt x) (sqrt y)) 2.0) (sqrt y))
  (/ (/ (+ (sqrt x) (sqrt y)) x) 1)
  (/ (/ (- (sqrt x) (sqrt y)) 2.0) y)
  (/ (/ 1 x) (* (cbrt y) (cbrt y)))
  (/ (/ (- x y) 2.0) (cbrt y))
  (/ (/ 1 x) (sqrt y))
  (/ (/ (- x y) 2.0) (sqrt y))
  (/ (/ 1 x) 1)
  (/ (/ (- x y) 2.0) y)
  (/ 1 (* (cbrt y) (cbrt y)))
  (/ (/ (- x y) (* x 2.0)) (cbrt y))
  (/ 1 (sqrt y))
  (/ (/ (- x y) (* x 2.0)) (sqrt y))
  (/ 1 1)
  (/ (/ (- x y) (* x 2.0)) y)
  (/ (- x y) (* (cbrt y) (cbrt y)))
  (/ (/ 1 (* x 2.0)) (cbrt y))
  (/ (- x y) (sqrt y))
  (/ (/ 1 (* x 2.0)) (sqrt y))
  (/ (- x y) 1)
  (/ (/ 1 (* x 2.0)) y)
  (/ 1 y)
  (/ y (/ (- x y) (* x 2.0)))
  (/ (/ (- x y) (* x 2.0)) (* (cbrt y) (cbrt y)))
  (/ (/ (- x y) (* x 2.0)) (sqrt y))
  (/ (/ (- x y) (* x 2.0)) 1)
  (/ y (cbrt (/ (- x y) (* x 2.0))))
  (/ y (sqrt (/ (- x y) (* x 2.0))))
  (/ y (/ (cbrt (- x y)) 2.0))
  (/ y (/ (sqrt (- x y)) 2.0))
  (/ y (/ (- x y) 2.0))
  (/ y (/ (- (sqrt x) (sqrt y)) 2.0))
  (/ y (/ (- x y) 2.0))
  (/ y (/ (- x y) (* x 2.0)))
  (/ y (/ 1 (* x 2.0)))
  (* y (* x 2.0))
  (- (log (- x y)) (+ (log x) (log 2.0)))
  (- (log (- x y)) (log (* x 2.0)))
  (log (/ (- x y) (* x 2.0)))
  (exp (/ (- x y) (* x 2.0)))
  (/ (* (* (- x y) (- x y)) (- x y)) (* (* (* x x) x) (* (* 2.0 2.0) 2.0)))
  (/ (* (* (- x y) (- x y)) (- x y)) (* (* (* x 2.0) (* x 2.0)) (* 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)))
  (- (- x y))
  (- (* x 2.0))
  (/ x (* x 2.0))
  (/ y (* x 2.0))
  (/ (* (cbrt (- x y)) (cbrt (- x y))) x)
  (/ (cbrt (- x y)) 2.0)
  (/ (sqrt (- x y)) x)
  (/ (sqrt (- x y)) 2.0)
  (/ 1 x)
  (/ (- x y) 2.0)
  (/ (+ (sqrt x) (sqrt y)) x)
  (/ (- (sqrt x) (sqrt y)) 2.0)
  (/ 1 x)
  (/ (- x y) 2.0)
  (/ 1 (* x 2.0))
  (/ (* x 2.0) (- x y))
  (/ (- x y) x)
  (/ (* x 2.0) (cbrt (- x y)))
  (/ (* x 2.0) (sqrt (- x y)))
  (/ (* x 2.0) (- x y))
  (/ (* x 2.0) (- (sqrt x) (sqrt y)))
  (/ (* x 2.0) (- x y))
  (* (* x 2.0) (+ (* x x) (+ (* y y) (* x y))))
  (* (* x 2.0) (+ 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)))
  (- 0.5 (* 0.5 (/ y x)))
  (- 0.5 (* 0.5 (/ y x)))
  (- 0.5 (* 0.5 (/ y x)))
4.627 * * [simplify]: iteration  0 :  151  enodes  (cost  1244 )
4.656 * * [simplify]: iteration  1 :  379  enodes  (cost  1207 )
4.839 * * [simplify]: iteration  2 :  1251  enodes  (cost  1081 )
5.627 * * [simplify]: iteration  done :  5000  enodes  (cost  1079 )
5.628 * [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) (* x 2.0))) (cbrt (/ (- x y) (* x 2.0)))) (* (cbrt y) (cbrt y)))
  (/ (cbrt (/ (- x y) (* x 2.0))) (cbrt y))
  (/ (* (cbrt (/ (- x y) (* x 2.0))) (cbrt (/ (- x y) (* x 2.0)))) (sqrt y))
  (/ (cbrt (/ (- x y) (* x 2.0))) (sqrt y))
  (* (cbrt (/ (- x y) (* x 2.0))) (cbrt (/ (- x y) (* x 2.0))))
  (/ (cbrt (/ (- x y) (* x 2.0))) y)
  (/ (sqrt (/ (- x y) (* x 2.0))) (* (cbrt y) (cbrt y)))
  (/ (sqrt (/ (- x y) (* x 2.0))) (cbrt y))
  (/ (sqrt (/ (- x y) (* x 2.0))) (sqrt y))
  (/ (sqrt (/ (- x y) (* x 2.0))) (sqrt y))
  (sqrt (/ (- x y) (* x 2.0)))
  (/ (sqrt (/ (- x y) (* x 2.0))) y)
  (/ (/ (* (cbrt (- x y)) (cbrt (- x y))) x) (* (cbrt y) (cbrt y)))
  (/ (/ (cbrt (- x y)) 2.0) (cbrt y))
  (/ (/ (* (cbrt (- x y)) (cbrt (- x y))) x) (sqrt y))
  (/ (/ (cbrt (- x y)) 2.0) (sqrt y))
  (/ (* (cbrt (- x y)) (cbrt (- x y))) x)
  (/ (/ (cbrt (- x y)) 2.0) y)
  (/ (/ (sqrt (- x y)) x) (* (cbrt y) (cbrt y)))
  (/ (/ (sqrt (- x y)) 2.0) (cbrt y))
  (/ (/ (sqrt (- x y)) x) (sqrt y))
  (/ (/ (sqrt (- x y)) 2.0) (sqrt y))
  (/ (sqrt (- x y)) x)
  (/ (/ (sqrt (- x y)) 2.0) y)
  (/ (/ 1 x) (* (cbrt y) (cbrt y)))
  (/ (/ (- x y) 2.0) (cbrt y))
  (/ (/ 1 x) (sqrt y))
  (/ (/ (- x y) 2.0) (sqrt y))
  (/ 1 x)
  (/ (/ (- x y) 2.0) y)
  (/ (/ (+ (sqrt x) (sqrt y)) x) (* (cbrt y) (cbrt y)))
  (/ (/ (- (sqrt x) (sqrt y)) 2.0) (cbrt y))
  (/ (/ (+ (sqrt x) (sqrt y)) x) (sqrt y))
  (/ (/ (- (sqrt x) (sqrt y)) 2.0) (sqrt y))
  (/ (+ (sqrt x) (sqrt y)) x)
  (/ (/ (- (sqrt x) (sqrt y)) 2.0) y)
  (/ (/ 1 x) (* (cbrt y) (cbrt y)))
  (/ (/ (- x y) 2.0) (cbrt y))
  (/ (/ 1 x) (sqrt y))
  (/ (/ (- x y) 2.0) (sqrt y))
  (/ 1 x)
  (/ (/ (- x y) 2.0) y)
  (/ 1 (* (cbrt y) (cbrt y)))
  (/ (/ (- x y) (* x 2.0)) (cbrt y))
  (/ 1 (sqrt y))
  (/ (/ (- x y) (* x 2.0)) (sqrt y))
  1
  (/ (/ (- x y) (* x 2.0)) y)
  (/ (- x y) (* (cbrt y) (cbrt y)))
  (/ (/ 1 (* x 2.0)) (cbrt y))
  (/ (- x y) (sqrt y))
  (/ (/ 1 (* x 2.0)) (sqrt y))
  (- x y)
  (/ (/ 1 (* x 2.0)) y)
  (/ 1 y)
  (/ y (/ (- x y) (* x 2.0)))
  (/ (/ (- x y) (* x 2.0)) (* (cbrt y) (cbrt y)))
  (/ (/ (- x y) (* x 2.0)) (sqrt y))
  (/ (- x y) (* x 2.0))
  (/ y (cbrt (/ (- x y) (* x 2.0))))
  (/ y (sqrt (/ (- x y) (* x 2.0))))
  (/ y (/ (cbrt (- x y)) 2.0))
  (/ y (/ (sqrt (- x y)) 2.0))
  (/ y (/ (- x y) 2.0))
  (/ y (/ (- (sqrt x) (sqrt y)) 2.0))
  (/ y (/ (- x y) 2.0))
  (/ y (/ (- x y) (* x 2.0)))
  (* y (* x 2.0))
  (* y (* x 2.0))
  (log (/ (- x y) (* x 2.0)))
  (log (/ (- x y) (* x 2.0)))
  (log (/ (- x y) (* x 2.0)))
  (exp (/ (- x y) (* x 2.0)))
  (pow (/ (- x y) (* x 2.0)) 3)
  (pow (/ (- x y) (* x 2.0)) 3)
  (* (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)))
  (- (- x y))
  (- (* x 2.0))
  (/ 1 2.0)
  (/ y (* x 2.0))
  (/ (* (cbrt (- x y)) (cbrt (- x y))) x)
  (/ (cbrt (- x y)) 2.0)
  (/ (sqrt (- x y)) x)
  (/ (sqrt (- x y)) 2.0)
  (/ 1 x)
  (/ (- x y) 2.0)
  (/ (+ (sqrt x) (sqrt y)) x)
  (/ (- (sqrt x) (sqrt y)) 2.0)
  (/ 1 x)
  (/ (- x y) 2.0)
  (/ 1 (* x 2.0))
  (/ (* x 2.0) (- x y))
  (/ (- x y) x)
  (/ (* x 2.0) (cbrt (- x y)))
  (/ (* x 2.0) (sqrt (- x y)))
  (/ (* x 2.0) (- x y))
  (/ (* x 2.0) (- (sqrt x) (sqrt y)))
  (/ (* x 2.0) (- x y))
  (* (+ (* x x) (* y (+ x y))) (* x 2.0))
  (* (* x 2.0) (+ x y))
  (- (/ 0.5 y) (/ 0.5 x))
  (- (/ 0.5 y) (/ 0.5 x))
  (- (/ 0.5 y) (/ 0.5 x))
  (- 0.5 (* 0.5 (/ y x)))
  (- 0.5 (* 0.5 (/ y x)))
  (- 0.5 (* 0.5 (/ y x)))
5.628 * * * [progress]: adding candidates to table
5.785 * [progress]: [Phase 3 of 3] Extracting.
5.785 * * [regime]: Finding splitpoints for: (#<alt (λ (x y) (/ (/ (- x y) (* x 2.0)) y))> #<alt (λ (x y) (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))))>)
5.785 * * * [regime-changes]: Trying 2 branch expressions: (y x)
5.785 * * * * [regimes]: Trying to branch on y from (#<alt (λ (x y) (/ (/ (- x y) (* x 2.0)) y))> #<alt (λ (x y) (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))))>)
5.799 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x y) (/ (/ (- x y) (* x 2.0)) y))> #<alt (λ (x y) (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0))))>)
5.810 * * * [regime]: Found split indices: #<option (#s(si 1 255))>
5.810 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0)))
5.811 * * [simplify]: iteration  0 :  9  enodes  (cost  11 )
5.811 * * [simplify]: iteration  1 :  12  enodes  (cost  11 )
5.811 * * [simplify]: iteration  done :  12  enodes  (cost  11 )
5.811 * [simplify]: Simplified to:
   (- (/ (/ 1 2.0) y) (/ 1 (* x 2.0)))
6.187 * [regime-testing]: Baseline error score: 0.017002125265658207
6.188 * [regime-testing]: Oracle error score: 0.006250781347668459
6.189 * [regime-testing]: End program error score: 0.017002125265658207
6.208 * [regime-testing]: Target error score: 0.017002125265658207