29.188 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.014 * * * [progress]: [2/2] Setting up program.
0.016 * [progress]: [Phase 2 of 3] Improving.
0.016 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ (- x y) (* (* x 2.0) y))
0.077 * * [simplify]: iteration  0 :  4878  enodes  (cost  9 )
0.077 * * [simplify]: iteration  1 :  4878  enodes  (cost  9 )
0.077 * [simplify]: Simplified to:
   (/ (- x y) (* x (* y 2.0)))
0.080 * * [progress]: iteration 1 / 4
0.080 * * * [progress]: picking best candidate
0.082 * * * * [pick]: Picked  #<alt (λ (x y) (/ (- x y) (* (* x 2.0) y)))>
0.082 * * * [progress]: localizing error
0.087 * * * [progress]: generating rewritten candidates
0.087 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.101 * * * [progress]: generating series expansions
0.101 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.101 * [approximate]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in (x y) around 0
0.101 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in y
0.101 * [taylor]: Taking taylor expansion of 0.5 in y
0.101 * [taylor]: Taking taylor expansion of (/ (- x y) (* x y)) in y
0.101 * [taylor]: Taking taylor expansion of (- x y) in y
0.101 * [taylor]: Taking taylor expansion of x in y
0.101 * [taylor]: Taking taylor expansion of y in y
0.101 * [taylor]: Taking taylor expansion of (* x y) in y
0.101 * [taylor]: Taking taylor expansion of x in y
0.101 * [taylor]: Taking taylor expansion of y in y
0.101 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in x
0.101 * [taylor]: Taking taylor expansion of 0.5 in x
0.101 * [taylor]: Taking taylor expansion of (/ (- x y) (* x y)) in x
0.101 * [taylor]: Taking taylor expansion of (- x y) in x
0.101 * [taylor]: Taking taylor expansion of x in x
0.101 * [taylor]: Taking taylor expansion of y in x
0.101 * [taylor]: Taking taylor expansion of (* x y) in x
0.101 * [taylor]: Taking taylor expansion of x in x
0.101 * [taylor]: Taking taylor expansion of y in x
0.101 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in x
0.101 * [taylor]: Taking taylor expansion of 0.5 in x
0.101 * [taylor]: Taking taylor expansion of (/ (- x y) (* x y)) in x
0.101 * [taylor]: Taking taylor expansion of (- x y) in x
0.101 * [taylor]: Taking taylor expansion of x in x
0.101 * [taylor]: Taking taylor expansion of y in x
0.101 * [taylor]: Taking taylor expansion of (* x y) in x
0.101 * [taylor]: Taking taylor expansion of x in x
0.101 * [taylor]: Taking taylor expansion of y in x
0.101 * [taylor]: Taking taylor expansion of -0.5 in y
0.102 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.102 * [taylor]: Taking taylor expansion of 0.5 in y
0.102 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.102 * [taylor]: Taking taylor expansion of y in y
0.102 * [taylor]: Taking taylor expansion of 0 in y
0.102 * [taylor]: Taking taylor expansion of 0 in y
0.103 * [taylor]: Taking taylor expansion of 0 in y
0.103 * [approximate]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in (x y) around 0
0.103 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in y
0.103 * [taylor]: Taking taylor expansion of 0.5 in y
0.103 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (* x y)) in y
0.103 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in y
0.103 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.103 * [taylor]: Taking taylor expansion of x in y
0.103 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.103 * [taylor]: Taking taylor expansion of y in y
0.103 * [taylor]: Taking taylor expansion of (* x y) in y
0.103 * [taylor]: Taking taylor expansion of x in y
0.103 * [taylor]: Taking taylor expansion of y in y
0.103 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in x
0.103 * [taylor]: Taking taylor expansion of 0.5 in x
0.103 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (* x y)) in x
0.103 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.103 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.103 * [taylor]: Taking taylor expansion of x in x
0.103 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.103 * [taylor]: Taking taylor expansion of y in x
0.103 * [taylor]: Taking taylor expansion of (* x y) in x
0.103 * [taylor]: Taking taylor expansion of x in x
0.103 * [taylor]: Taking taylor expansion of y in x
0.103 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in x
0.103 * [taylor]: Taking taylor expansion of 0.5 in x
0.103 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (* x y)) in x
0.103 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.103 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.103 * [taylor]: Taking taylor expansion of x in x
0.103 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.103 * [taylor]: Taking taylor expansion of y in x
0.103 * [taylor]: Taking taylor expansion of (* x y) in x
0.103 * [taylor]: Taking taylor expansion of x in x
0.103 * [taylor]: Taking taylor expansion of y in x
0.104 * [taylor]: Taking taylor expansion of 0 in y
0.104 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.104 * [taylor]: Taking taylor expansion of 0.5 in y
0.104 * [taylor]: Taking taylor expansion of y in y
0.104 * [taylor]: Taking taylor expansion of (neg 0.5) in y
0.104 * [taylor]: Taking taylor expansion of 0.5 in y
0.104 * [taylor]: Taking taylor expansion of 0 in y
0.105 * [taylor]: Taking taylor expansion of 0 in y
0.105 * [taylor]: Taking taylor expansion of 0 in y
0.105 * [approximate]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in (x y) around 0
0.105 * [taylor]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in y
0.105 * [taylor]: Taking taylor expansion of 0.5 in y
0.105 * [taylor]: Taking taylor expansion of (* x (* y (- (/ 1 y) (/ 1 x)))) in y
0.105 * [taylor]: Taking taylor expansion of x in y
0.105 * [taylor]: Taking taylor expansion of (* y (- (/ 1 y) (/ 1 x))) in y
0.105 * [taylor]: Taking taylor expansion of y in y
0.105 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in y
0.106 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.106 * [taylor]: Taking taylor expansion of y in y
0.106 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.106 * [taylor]: Taking taylor expansion of x in y
0.106 * [taylor]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in x
0.106 * [taylor]: Taking taylor expansion of 0.5 in x
0.106 * [taylor]: Taking taylor expansion of (* x (* y (- (/ 1 y) (/ 1 x)))) in x
0.106 * [taylor]: Taking taylor expansion of x in x
0.106 * [taylor]: Taking taylor expansion of (* y (- (/ 1 y) (/ 1 x))) in x
0.106 * [taylor]: Taking taylor expansion of y in x
0.106 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.106 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.106 * [taylor]: Taking taylor expansion of y in x
0.106 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.106 * [taylor]: Taking taylor expansion of x in x
0.106 * [taylor]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in x
0.106 * [taylor]: Taking taylor expansion of 0.5 in x
0.106 * [taylor]: Taking taylor expansion of (* x (* y (- (/ 1 y) (/ 1 x)))) in x
0.106 * [taylor]: Taking taylor expansion of x in x
0.106 * [taylor]: Taking taylor expansion of (* y (- (/ 1 y) (/ 1 x))) in x
0.106 * [taylor]: Taking taylor expansion of y in x
0.106 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.106 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.106 * [taylor]: Taking taylor expansion of y in x
0.106 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.106 * [taylor]: Taking taylor expansion of x in x
0.106 * [taylor]: Taking taylor expansion of 0 in y
0.106 * [taylor]: Taking taylor expansion of (neg (* 0.5 y)) in y
0.106 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.106 * [taylor]: Taking taylor expansion of 0.5 in y
0.106 * [taylor]: Taking taylor expansion of y in y
0.107 * [taylor]: Taking taylor expansion of 0.5 in y
0.107 * [taylor]: Taking taylor expansion of 0 in y
0.107 * [taylor]: Taking taylor expansion of 0 in y
0.108 * [taylor]: Taking taylor expansion of 0 in y
0.108 * * * [progress]: simplifying candidates
0.108 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (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)))
  (neg (- x y))
  (neg (* (* 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)))
0.137 * * [simplify]: iteration  0 :  6066  enodes  (cost  350 )
0.138 * [simplify]: Simplified to:
   (log (/ (- x y) (* x (* y 2.0))))
  (log (/ (- x y) (* x (* y 2.0))))
  (log (/ (- x y) (* x (* y 2.0))))
  (log (/ (- x y) (* x (* y 2.0))))
  (exp (/ (- x y) (* x (* y 2.0))))
  (pow (/ (- x y) (* x (* y 2.0))) 3)
  (pow (/ (- x y) (* x (* y 2.0))) 3)
  (pow (/ (- x y) (* x (* y 2.0))) 3)
  (* (cbrt (/ (- x y) (* x (* y 2.0)))) (cbrt (/ (- x y) (* x (* y 2.0)))))
  (cbrt (/ (- x y) (* x (* y 2.0))))
  (pow (/ (- x y) (* x (* y 2.0))) 3)
  (sqrt (/ (- x y) (* x (* y 2.0))))
  (sqrt (/ (- x y) (* x (* y 2.0))))
  (- y x)
  (* x (* y (neg 2.0)))
  (/ 1 (* y 2.0))
  (/ 1 (* x 2.0))
  (* (/ (cbrt (- x y)) x) (/ (cbrt (- x y)) 2.0))
  (/ (cbrt (- x y)) y)
  (/ (sqrt (- x y)) (* x 2.0))
  (/ (sqrt (- x y)) y)
  (/ 1 (* x 2.0))
  (+ (/ x y) -1)
  (/ (+ (sqrt x) (sqrt y)) (* x 2.0))
  (/ (- (sqrt x) (sqrt y)) y)
  (/ 1 (* x 2.0))
  (+ (/ x y) -1)
  (/ (/ 1 (* y 2.0)) x)
  (* (/ x (/ (- x y) 2.0)) y)
  (/ (- x y) (* x 2.0))
  (* (* (/ x (cbrt (- x y))) 2.0) y)
  (* (/ x (/ (sqrt (- x y)) 2.0)) y)
  (* (/ x (/ (- x y) 2.0)) y)
  (* (/ x (/ (- (sqrt x) (sqrt y)) 2.0)) y)
  (* (/ x (/ (- x y) 2.0)) y)
  (* x (* y (* 2.0 (+ (* x x) (* y (+ x y))))))
  (* x (* y (* 2.0 (+ x y))))
  (- (/ 0.5 y) (/ 0.5 x))
  (- (/ 0.5 y) (/ 0.5 x))
  (- (/ 0.5 y) (/ 0.5 x))
0.139 * * * [progress]: adding candidates to table
0.171 * * [progress]: iteration 2 / 4
0.171 * * * [progress]: picking best candidate
0.175 * * * * [pick]: Picked  #<alt (λ (x y) (- (/ 0.5 y) (/ 0.5 x)))>
0.175 * * * [progress]: localizing error
0.180 * * * [progress]: generating rewritten candidates
0.180 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.196 * * * [progress]: generating series expansions
0.196 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.196 * [approximate]: Taking taylor expansion of (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in (y x) around 0
0.196 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
0.196 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.196 * [taylor]: Taking taylor expansion of 0.5 in x
0.196 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.196 * [taylor]: Taking taylor expansion of y in x
0.196 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.197 * [taylor]: Taking taylor expansion of 0.5 in x
0.197 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.197 * [taylor]: Taking taylor expansion of x in x
0.197 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
0.197 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.197 * [taylor]: Taking taylor expansion of 0.5 in y
0.197 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.197 * [taylor]: Taking taylor expansion of y in y
0.197 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
0.197 * [taylor]: Taking taylor expansion of 0.5 in y
0.197 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.197 * [taylor]: Taking taylor expansion of x in y
0.197 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
0.197 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.197 * [taylor]: Taking taylor expansion of 0.5 in y
0.197 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.197 * [taylor]: Taking taylor expansion of y in y
0.197 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
0.197 * [taylor]: Taking taylor expansion of 0.5 in y
0.197 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.197 * [taylor]: Taking taylor expansion of x in y
0.197 * [taylor]: Taking taylor expansion of 0.5 in x
0.197 * [taylor]: Taking taylor expansion of (neg (* 0.5 (/ 1 x))) in x
0.197 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.197 * [taylor]: Taking taylor expansion of 0.5 in x
0.197 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.197 * [taylor]: Taking taylor expansion of x in x
0.197 * [taylor]: Taking taylor expansion of 0 in x
0.198 * [taylor]: Taking taylor expansion of 0 in x
0.198 * [taylor]: Taking taylor expansion of 0 in x
0.198 * [approximate]: Taking taylor expansion of (- (* 0.5 y) (* 0.5 x)) in (y x) around 0
0.198 * [taylor]: Taking taylor expansion of (- (* 0.5 y) (* 0.5 x)) in x
0.198 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.198 * [taylor]: Taking taylor expansion of 0.5 in x
0.198 * [taylor]: Taking taylor expansion of y in x
0.198 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.198 * [taylor]: Taking taylor expansion of 0.5 in x
0.198 * [taylor]: Taking taylor expansion of x in x
0.198 * [taylor]: Taking taylor expansion of (- (* 0.5 y) (* 0.5 x)) in y
0.198 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.198 * [taylor]: Taking taylor expansion of 0.5 in y
0.198 * [taylor]: Taking taylor expansion of y in y
0.198 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
0.199 * [taylor]: Taking taylor expansion of 0.5 in y
0.199 * [taylor]: Taking taylor expansion of x in y
0.199 * [taylor]: Taking taylor expansion of (- (* 0.5 y) (* 0.5 x)) in y
0.199 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.199 * [taylor]: Taking taylor expansion of 0.5 in y
0.199 * [taylor]: Taking taylor expansion of y in y
0.199 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
0.199 * [taylor]: Taking taylor expansion of 0.5 in y
0.199 * [taylor]: Taking taylor expansion of x in y
0.199 * [taylor]: Taking taylor expansion of (neg (* 0.5 x)) in x
0.199 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.199 * [taylor]: Taking taylor expansion of 0.5 in x
0.199 * [taylor]: Taking taylor expansion of x in x
0.199 * [taylor]: Taking taylor expansion of 0.5 in x
0.199 * [taylor]: Taking taylor expansion of 0 in x
0.199 * [taylor]: Taking taylor expansion of 0 in x
0.199 * [approximate]: Taking taylor expansion of (- (* 0.5 x) (* 0.5 y)) in (y x) around 0
0.199 * [taylor]: Taking taylor expansion of (- (* 0.5 x) (* 0.5 y)) in x
0.199 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.199 * [taylor]: Taking taylor expansion of 0.5 in x
0.199 * [taylor]: Taking taylor expansion of x in x
0.200 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.200 * [taylor]: Taking taylor expansion of 0.5 in x
0.200 * [taylor]: Taking taylor expansion of y in x
0.200 * [taylor]: Taking taylor expansion of (- (* 0.5 x) (* 0.5 y)) in y
0.200 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
0.200 * [taylor]: Taking taylor expansion of 0.5 in y
0.200 * [taylor]: Taking taylor expansion of x in y
0.200 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.200 * [taylor]: Taking taylor expansion of 0.5 in y
0.200 * [taylor]: Taking taylor expansion of y in y
0.200 * [taylor]: Taking taylor expansion of (- (* 0.5 x) (* 0.5 y)) in y
0.200 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
0.200 * [taylor]: Taking taylor expansion of 0.5 in y
0.200 * [taylor]: Taking taylor expansion of x in y
0.200 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.200 * [taylor]: Taking taylor expansion of 0.5 in y
0.200 * [taylor]: Taking taylor expansion of y in y
0.200 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.200 * [taylor]: Taking taylor expansion of 0.5 in x
0.200 * [taylor]: Taking taylor expansion of x in x
0.200 * [taylor]: Taking taylor expansion of (neg 0.5) in x
0.200 * [taylor]: Taking taylor expansion of 0.5 in x
0.200 * [taylor]: Taking taylor expansion of 0 in x
0.200 * [taylor]: Taking taylor expansion of 0 in x
0.200 * * * [progress]: simplifying candidates
0.201 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ (exp (/ 0.5 y)) (exp (/ 0.5 x)))
  (log (- (/ 0.5 y) (/ 0.5 x)))
  (exp (- (/ 0.5 y) (/ 0.5 x)))
  (* (cbrt (- (/ 0.5 y) (/ 0.5 x))) (cbrt (- (/ 0.5 y) (/ 0.5 x))))
  (cbrt (- (/ 0.5 y) (/ 0.5 x)))
  (* (* (- (/ 0.5 y) (/ 0.5 x)) (- (/ 0.5 y) (/ 0.5 x))) (- (/ 0.5 y) (/ 0.5 x)))
  (sqrt (- (/ 0.5 y) (/ 0.5 x)))
  (sqrt (- (/ 0.5 y) (/ 0.5 x)))
  (- (* 0.5 x) (* y 0.5))
  (* y x)
  (- (pow (/ 0.5 y) 3) (pow (/ 0.5 x) 3))
  (+ (* (/ 0.5 y) (/ 0.5 y)) (+ (* (/ 0.5 x) (/ 0.5 x)) (* (/ 0.5 y) (/ 0.5 x))))
  (neg (/ 0.5 x))
  (- (* (/ 0.5 y) (/ 0.5 y)) (* (/ 0.5 x) (/ 0.5 x)))
  (+ (/ 0.5 y) (/ 0.5 x))
  (+ (sqrt (/ 0.5 y)) (sqrt (/ 0.5 x)))
  (- (sqrt (/ 0.5 y)) (sqrt (/ 0.5 x)))
  (+ (sqrt (/ 0.5 y)) (/ (sqrt 0.5) (sqrt x)))
  (- (sqrt (/ 0.5 y)) (/ (sqrt 0.5) (sqrt x)))
  (+ (/ (sqrt 0.5) (sqrt y)) (sqrt (/ 0.5 x)))
  (- (/ (sqrt 0.5) (sqrt y)) (sqrt (/ 0.5 x)))
  (+ (/ (sqrt 0.5) (sqrt y)) (/ (sqrt 0.5) (sqrt x)))
  (- (/ (sqrt 0.5) (sqrt y)) (/ (sqrt 0.5) (sqrt x)))
  (- (/ (cbrt 0.5) y) (/ (cbrt 0.5) x))
  (- (/ (sqrt 0.5) y) (/ (sqrt 0.5) x))
  (- (/ 0.5 y) (/ 0.5 x))
  (- (/ 0.5 y) (/ 0.5 x))
  (- (/ 1 y) (/ 1 x))
  (neg (/ 0.5 x))
  (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
  (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
  (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
0.237 * * [simplify]: iteration  0 :  4896  enodes  (cost  278 )
0.237 * * [simplify]: iteration  1 :  4896  enodes  (cost  278 )
0.238 * [simplify]: Simplified to:
   (exp (- (/ 0.5 y) (/ 0.5 x)))
  (log (- (/ 0.5 y) (/ 0.5 x)))
  (exp (- (/ 0.5 y) (/ 0.5 x)))
  (* (cbrt (- (/ 0.5 y) (/ 0.5 x))) (cbrt (- (/ 0.5 y) (/ 0.5 x))))
  (cbrt (- (/ 0.5 y) (/ 0.5 x)))
  (pow (- (/ 0.5 y) (/ 0.5 x)) 3)
  (sqrt (- (/ 0.5 y) (/ 0.5 x)))
  (sqrt (- (/ 0.5 y) (/ 0.5 x)))
  (* 0.5 (- x y))
  (* y x)
  (- (pow (/ 0.5 y) 3) (pow (/ 0.5 x) 3))
  (* 0.5 (+ (/ 0.5 (* y y)) (/ (+ (/ 0.5 y) (/ 0.5 x)) x)))
  (/ (neg 0.5) x)
  (* 0.5 (- (/ 0.5 (* y y)) (/ 0.5 (* x x))))
  (+ (/ 0.5 y) (/ 0.5 x))
  (+ (sqrt (/ 0.5 y)) (sqrt (/ 0.5 x)))
  (- (sqrt (/ 0.5 y)) (sqrt (/ 0.5 x)))
  (+ (sqrt (/ 0.5 y)) (/ (sqrt 0.5) (sqrt x)))
  (- (sqrt (/ 0.5 y)) (/ (sqrt 0.5) (sqrt x)))
  (+ (sqrt (/ 0.5 x)) (/ (sqrt 0.5) (sqrt y)))
  (- (/ (sqrt 0.5) (sqrt y)) (sqrt (/ 0.5 x)))
  (+ (/ (sqrt 0.5) (sqrt x)) (/ (sqrt 0.5) (sqrt y)))
  (- (/ (sqrt 0.5) (sqrt y)) (/ (sqrt 0.5) (sqrt x)))
  (- (/ (cbrt 0.5) y) (/ (cbrt 0.5) x))
  (- (/ (sqrt 0.5) y) (/ (sqrt 0.5) x))
  (- (/ 0.5 y) (/ 0.5 x))
  (- (/ 0.5 y) (/ 0.5 x))
  (+ (/ 1 y) (/ -1 x))
  (/ (neg 0.5) x)
  (- (/ 0.5 y) (/ 0.5 x))
  (- (/ 0.5 y) (/ 0.5 x))
  (- (/ 0.5 y) (/ 0.5 x))
0.238 * * * [progress]: adding candidates to table
0.269 * * [progress]: iteration 3 / 4
0.269 * * * [progress]: picking best candidate
0.271 * * * * [pick]: Picked  #<alt (λ (x y) (* (/ 1 (* x 2.0)) (+ (/ x y) -1)))>
0.271 * * * [progress]: localizing error
0.278 * * * [progress]: generating rewritten candidates
0.278 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.296 * * * [progress]: generating series expansions
0.296 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.296 * [approximate]: Taking taylor expansion of (* 0.5 (/ (- (/ x y) 1) x)) in (x y) around 0
0.296 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- (/ x y) 1) x)) in y
0.296 * [taylor]: Taking taylor expansion of 0.5 in y
0.296 * [taylor]: Taking taylor expansion of (/ (- (/ x y) 1) x) in y
0.296 * [taylor]: Taking taylor expansion of (- (/ x y) 1) in y
0.296 * [taylor]: Taking taylor expansion of (/ x y) in y
0.296 * [taylor]: Taking taylor expansion of x in y
0.296 * [taylor]: Taking taylor expansion of y in y
0.296 * [taylor]: Taking taylor expansion of 1 in y
0.296 * [taylor]: Taking taylor expansion of x in y
0.296 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- (/ x y) 1) x)) in x
0.296 * [taylor]: Taking taylor expansion of 0.5 in x
0.296 * [taylor]: Taking taylor expansion of (/ (- (/ x y) 1) x) in x
0.296 * [taylor]: Taking taylor expansion of (- (/ x y) 1) in x
0.296 * [taylor]: Taking taylor expansion of (/ x y) in x
0.296 * [taylor]: Taking taylor expansion of x in x
0.296 * [taylor]: Taking taylor expansion of y in x
0.296 * [taylor]: Taking taylor expansion of 1 in x
0.297 * [taylor]: Taking taylor expansion of x in x
0.297 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- (/ x y) 1) x)) in x
0.297 * [taylor]: Taking taylor expansion of 0.5 in x
0.297 * [taylor]: Taking taylor expansion of (/ (- (/ x y) 1) x) in x
0.297 * [taylor]: Taking taylor expansion of (- (/ x y) 1) in x
0.297 * [taylor]: Taking taylor expansion of (/ x y) in x
0.297 * [taylor]: Taking taylor expansion of x in x
0.297 * [taylor]: Taking taylor expansion of y in x
0.297 * [taylor]: Taking taylor expansion of 1 in x
0.297 * [taylor]: Taking taylor expansion of x in x
0.297 * [taylor]: Taking taylor expansion of -0.5 in y
0.297 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.297 * [taylor]: Taking taylor expansion of 0.5 in y
0.297 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.297 * [taylor]: Taking taylor expansion of y in y
0.297 * [taylor]: Taking taylor expansion of 0 in y
0.298 * [taylor]: Taking taylor expansion of 0 in y
0.298 * [taylor]: Taking taylor expansion of 0 in y
0.298 * [approximate]: Taking taylor expansion of (* 0.5 (* x (- (/ y x) 1))) in (x y) around 0
0.298 * [taylor]: Taking taylor expansion of (* 0.5 (* x (- (/ y x) 1))) in y
0.298 * [taylor]: Taking taylor expansion of 0.5 in y
0.298 * [taylor]: Taking taylor expansion of (* x (- (/ y x) 1)) in y
0.298 * [taylor]: Taking taylor expansion of x in y
0.298 * [taylor]: Taking taylor expansion of (- (/ y x) 1) in y
0.298 * [taylor]: Taking taylor expansion of (/ y x) in y
0.298 * [taylor]: Taking taylor expansion of y in y
0.298 * [taylor]: Taking taylor expansion of x in y
0.298 * [taylor]: Taking taylor expansion of 1 in y
0.298 * [taylor]: Taking taylor expansion of (* 0.5 (* x (- (/ y x) 1))) in x
0.299 * [taylor]: Taking taylor expansion of 0.5 in x
0.299 * [taylor]: Taking taylor expansion of (* x (- (/ y x) 1)) in x
0.299 * [taylor]: Taking taylor expansion of x in x
0.299 * [taylor]: Taking taylor expansion of (- (/ y x) 1) in x
0.299 * [taylor]: Taking taylor expansion of (/ y x) in x
0.299 * [taylor]: Taking taylor expansion of y in x
0.299 * [taylor]: Taking taylor expansion of x in x
0.299 * [taylor]: Taking taylor expansion of 1 in x
0.299 * [taylor]: Taking taylor expansion of (* 0.5 (* x (- (/ y x) 1))) in x
0.299 * [taylor]: Taking taylor expansion of 0.5 in x
0.299 * [taylor]: Taking taylor expansion of (* x (- (/ y x) 1)) in x
0.299 * [taylor]: Taking taylor expansion of x in x
0.299 * [taylor]: Taking taylor expansion of (- (/ y x) 1) in x
0.299 * [taylor]: Taking taylor expansion of (/ y x) in x
0.299 * [taylor]: Taking taylor expansion of y in x
0.299 * [taylor]: Taking taylor expansion of x in x
0.299 * [taylor]: Taking taylor expansion of 1 in x
0.299 * [taylor]: Taking taylor expansion of 0 in y
0.299 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.299 * [taylor]: Taking taylor expansion of 0.5 in y
0.299 * [taylor]: Taking taylor expansion of y in y
0.299 * [taylor]: Taking taylor expansion of (neg 0.5) in y
0.299 * [taylor]: Taking taylor expansion of 0.5 in y
0.300 * [taylor]: Taking taylor expansion of 0 in y
0.300 * [taylor]: Taking taylor expansion of 0 in y
0.300 * [approximate]: Taking taylor expansion of (* -0.5 (* x (- (/ y x) 1))) in (x y) around 0
0.300 * [taylor]: Taking taylor expansion of (* -0.5 (* x (- (/ y x) 1))) in y
0.300 * [taylor]: Taking taylor expansion of -0.5 in y
0.300 * [taylor]: Taking taylor expansion of (* x (- (/ y x) 1)) in y
0.300 * [taylor]: Taking taylor expansion of x in y
0.300 * [taylor]: Taking taylor expansion of (- (/ y x) 1) in y
0.300 * [taylor]: Taking taylor expansion of (/ y x) in y
0.300 * [taylor]: Taking taylor expansion of y in y
0.300 * [taylor]: Taking taylor expansion of x in y
0.300 * [taylor]: Taking taylor expansion of 1 in y
0.300 * [taylor]: Taking taylor expansion of (* -0.5 (* x (- (/ y x) 1))) in x
0.300 * [taylor]: Taking taylor expansion of -0.5 in x
0.300 * [taylor]: Taking taylor expansion of (* x (- (/ y x) 1)) in x
0.300 * [taylor]: Taking taylor expansion of x in x
0.300 * [taylor]: Taking taylor expansion of (- (/ y x) 1) in x
0.300 * [taylor]: Taking taylor expansion of (/ y x) in x
0.300 * [taylor]: Taking taylor expansion of y in x
0.300 * [taylor]: Taking taylor expansion of x in x
0.300 * [taylor]: Taking taylor expansion of 1 in x
0.300 * [taylor]: Taking taylor expansion of (* -0.5 (* x (- (/ y x) 1))) in x
0.300 * [taylor]: Taking taylor expansion of -0.5 in x
0.300 * [taylor]: Taking taylor expansion of (* x (- (/ y x) 1)) in x
0.300 * [taylor]: Taking taylor expansion of x in x
0.300 * [taylor]: Taking taylor expansion of (- (/ y x) 1) in x
0.300 * [taylor]: Taking taylor expansion of (/ y x) in x
0.300 * [taylor]: Taking taylor expansion of y in x
0.300 * [taylor]: Taking taylor expansion of x in x
0.301 * [taylor]: Taking taylor expansion of 1 in x
0.301 * [taylor]: Taking taylor expansion of 0 in y
0.301 * [taylor]: Taking taylor expansion of (neg (* 0.5 y)) in y
0.301 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.301 * [taylor]: Taking taylor expansion of 0.5 in y
0.301 * [taylor]: Taking taylor expansion of y in y
0.301 * [taylor]: Taking taylor expansion of 0.5 in y
0.301 * [taylor]: Taking taylor expansion of 0 in y
0.301 * [taylor]: Taking taylor expansion of 0 in y
0.302 * * * [progress]: simplifying candidates
0.302 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (/ 1 (* x 2.0)) (+ (/ x y) -1))
  (+ (neg (+ (log x) (log 2.0))) (log (+ (/ x y) -1)))
  (+ (neg (log (* x 2.0))) (log (+ (/ x y) -1)))
  (+ (- 0 (+ (log x) (log 2.0))) (log (+ (/ x y) -1)))
  (+ (- 0 (log (* x 2.0))) (log (+ (/ x y) -1)))
  (+ (- (log 1) (+ (log x) (log 2.0))) (log (+ (/ x y) -1)))
  (+ (- (log 1) (log (* x 2.0))) (log (+ (/ x y) -1)))
  (+ (log (/ 1 (* x 2.0))) (log (+ (/ x y) -1)))
  (log (* (/ 1 (* x 2.0)) (+ (/ x y) -1)))
  (exp (* (/ 1 (* x 2.0)) (+ (/ x y) -1)))
  (* (/ (* (* 1 1) 1) (* (* (* x x) x) (* (* 2.0 2.0) 2.0))) (* (* (+ (/ x y) -1) (+ (/ x y) -1)) (+ (/ x y) -1)))
  (* (/ (* (* 1 1) 1) (* (* (* x 2.0) (* x 2.0)) (* x 2.0))) (* (* (+ (/ x y) -1) (+ (/ x y) -1)) (+ (/ x y) -1)))
  (* (* (* (/ 1 (* x 2.0)) (/ 1 (* x 2.0))) (/ 1 (* x 2.0))) (* (* (+ (/ x y) -1) (+ (/ x y) -1)) (+ (/ x y) -1)))
  (* (cbrt (* (/ 1 (* x 2.0)) (+ (/ x y) -1))) (cbrt (* (/ 1 (* x 2.0)) (+ (/ x y) -1))))
  (cbrt (* (/ 1 (* x 2.0)) (+ (/ x y) -1)))
  (* (* (* (/ 1 (* x 2.0)) (+ (/ x y) -1)) (* (/ 1 (* x 2.0)) (+ (/ x y) -1))) (* (/ 1 (* x 2.0)) (+ (/ x y) -1)))
  (sqrt (* (/ 1 (* x 2.0)) (+ (/ x y) -1)))
  (sqrt (* (/ 1 (* x 2.0)) (+ (/ x y) -1)))
  (* 1 (+ (pow (/ x y) 3) (pow -1 3)))
  (* (* x 2.0) (+ (* (/ x y) (/ x y)) (- (* -1 -1) (* (/ x y) -1))))
  (* 1 (- (* (/ x y) (/ x y)) (* -1 -1)))
  (* (* x 2.0) (- (/ x y) -1))
  (* (sqrt (/ 1 (* x 2.0))) (sqrt (+ (/ x y) -1)))
  (* (sqrt (/ 1 (* x 2.0))) (sqrt (+ (/ x y) -1)))
  (* (/ 1 (* x 2.0)) (/ x y))
  (* (/ 1 (* x 2.0)) -1)
  (* (/ x y) (/ 1 (* x 2.0)))
  (* -1 (/ 1 (* x 2.0)))
  (* (/ 1 (* x 2.0)) (* (cbrt (+ (/ x y) -1)) (cbrt (+ (/ x y) -1))))
  (* (/ 1 (* x 2.0)) (sqrt (+ (/ x y) -1)))
  (* (/ 1 (* x 2.0)) 1)
  (* (/ 1 (* x 2.0)) (+ (sqrt (/ x y)) 1))
  (* (/ 1 (* x 2.0)) (+ (/ (sqrt x) (sqrt y)) 1))
  (* (/ 1 (* x 2.0)) 1)
  (* (cbrt (/ 1 (* x 2.0))) (+ (/ x y) -1))
  (* (sqrt (/ 1 (* x 2.0))) (+ (/ x y) -1))
  (* (/ (cbrt 1) 2.0) (+ (/ x y) -1))
  (* (/ (sqrt 1) 2.0) (+ (/ x y) -1))
  (* (/ 1 2.0) (+ (/ x y) -1))
  (* (/ 1 (* x 2.0)) (+ (/ x y) -1))
  (* (/ 1 (* x 2.0)) (+ (/ x y) -1))
  (* (/ 1 (* x 2.0)) (+ (pow (/ x y) 3) (pow -1 3)))
  (* (/ 1 (* x 2.0)) (- (* (/ x y) (/ x y)) (* -1 -1)))
  (* 1 (+ (/ x y) -1))
  (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
  (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
  (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
0.343 * * [simplify]: iteration  0 :  4983  enodes  (cost  454 )
0.343 * * [simplify]: iteration  1 :  4983  enodes  (cost  454 )
0.345 * [simplify]: Simplified to:
   (/ (+ (/ x y) -1) (* x 2.0))
  (log (/ (+ (/ x y) -1) (* x 2.0)))
  (log (/ (+ (/ x y) -1) (* x 2.0)))
  (log (/ (+ (/ x y) -1) (* x 2.0)))
  (log (/ (+ (/ x y) -1) (* x 2.0)))
  (log (/ (+ (/ x y) -1) (* x 2.0)))
  (log (/ (+ (/ x y) -1) (* x 2.0)))
  (log (/ (+ (/ x y) -1) (* x 2.0)))
  (log (/ (+ (/ x y) -1) (* x 2.0)))
  (exp (/ (+ (/ x y) -1) (* x 2.0)))
  (pow (/ (+ (/ x y) -1) (* x 2.0)) 3)
  (pow (/ (+ (/ x y) -1) (* x 2.0)) 3)
  (pow (/ (+ (/ x y) -1) (* x 2.0)) 3)
  (* (cbrt (/ (+ (/ x y) -1) (* x 2.0))) (cbrt (/ (+ (/ x y) -1) (* x 2.0))))
  (cbrt (/ (+ (/ x y) -1) (* x 2.0)))
  (pow (/ (+ (/ x y) -1) (* x 2.0)) 3)
  (sqrt (/ (+ (/ x y) -1) (* x 2.0)))
  (sqrt (/ (+ (/ x y) -1) (* x 2.0)))
  (+ -1 (pow (/ x y) 3))
  (* x (+ 2.0 (* 2.0 (* (/ x y) (+ 1 (/ x y))))))
  (+ -1 (* (/ x y) (/ x y)))
  (* x (+ 2.0 (* 2.0 (/ x y))))
  (* (sqrt (/ 1 (* x 2.0))) (sqrt (+ (/ x y) -1)))
  (* (sqrt (/ 1 (* x 2.0))) (sqrt (+ (/ x y) -1)))
  (/ (/ 1 2.0) y)
  (/ -1 (* x 2.0))
  (/ (/ 1 2.0) y)
  (/ -1 (* x 2.0))
  (* (cbrt (+ (/ x y) -1)) (/ (cbrt (+ (/ x y) -1)) (* x 2.0)))
  (/ (sqrt (+ (/ x y) -1)) (* x 2.0))
  (/ 1 (* x 2.0))
  (/ (+ 1 (sqrt (/ x y))) (* x 2.0))
  (/ (+ 1 (/ (sqrt x) (sqrt y))) (* x 2.0))
  (/ 1 (* x 2.0))
  (* (+ (/ x y) -1) (cbrt (/ 1 (* x 2.0))))
  (* (+ (/ x y) -1) (sqrt (/ 1 (* x 2.0))))
  (* (+ (/ x y) -1) (/ (cbrt 1) 2.0))
  (/ (+ (/ x y) -1) 2.0)
  (/ (+ (/ x y) -1) 2.0)
  (/ (+ (/ x y) -1) (* x 2.0))
  (/ (+ (/ x y) -1) (* x 2.0))
  (/ (+ -1 (pow (/ x y) 3)) (* x 2.0))
  (/ (+ -1 (* (/ x y) (/ x y))) (* x 2.0))
  (+ (/ x y) -1)
  (- (/ 0.5 y) (/ 0.5 x))
  (- (/ 0.5 y) (/ 0.5 x))
  (- (/ 0.5 y) (/ 0.5 x))
0.345 * * * [progress]: adding candidates to table
0.383 * [progress]: [Phase 3 of 3] Extracting.
0.383 * * [regime]: Finding splitpoints for: (#<alt (λ (x y) (- (/ 0.5 y) (/ 0.5 x)))> #<alt (λ (x y) (* (/ 1 (* x 2.0)) (+ (/ x y) -1)))>)
0.383 * * * [regime-changes]: Trying 2 branch expressions: (y x)
0.383 * * * * [regimes]: Trying to branch on y from (#<alt (λ (x y) (- (/ 0.5 y) (/ 0.5 x)))> #<alt (λ (x y) (* (/ 1 (* x 2.0)) (+ (/ x y) -1)))>)
0.415 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x y) (- (/ 0.5 y) (/ 0.5 x)))> #<alt (λ (x y) (* (/ 1 (* x 2.0)) (+ (/ x y) -1)))>)
0.447 * * * [regime]: Found split indices: #<option (#s(si 0 255))>
0.448 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (/ 0.5 y) (/ 0.5 x))
0.449 * * [simplify]: iteration  0 :  23  enodes  (cost  7 )
0.449 * * [simplify]: iteration  1 :  23  enodes  (cost  7 )
0.449 * [simplify]: Simplified to:
   (- (/ 0.5 y) (/ 0.5 x))
1.129 * [regime-testing]: End program error score: 0.013501687710963871
1.195 * [regime-testing]: Target error score: 0.013501687710963871