0.130 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.011 * * * [progress]: [2/2] Setting up program.
0.013 * [progress]: [Phase 2 of 3] Improving.
0.014 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (/ (- x y) (+ x y))
0.015 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.016 * * [simplify]: iteration  1 :  11  enodes  (cost  7 )
0.017 * * [simplify]: iteration  2 :  14  enodes  (cost  7 )
0.019 * * [simplify]: iteration  3 :  16  enodes  (cost  7 )
0.020 * * [simplify]: iteration  done :  16  enodes  (cost  7 )
0.021 * [simplify]: Simplified to:
   (/ (- x y) (+ x y))
0.021 * * [progress]: iteration 1 / 4
0.021 * * * [progress]: picking best candidate
0.022 * * * * [pick]: Picked  #<alt (λ (x y) (/ (- x y) (+ x y)))>
0.023 * * * [progress]: localizing error
0.028 * * * [progress]: generating rewritten candidates
0.028 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.044 * * * [progress]: generating series expansions
0.044 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.044 * [approximate]: Taking taylor expansion of (/ (- x y) (+ x y)) in (x y) around 0
0.044 * [taylor]: Taking taylor expansion of (/ (- x y) (+ x y)) 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 (+ x y) in y
0.044 * [taylor]: Taking taylor expansion of x in y
0.044 * [taylor]: Taking taylor expansion of y in y
0.045 * [taylor]: Taking taylor expansion of (/ (- x y) (+ x y)) 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 (+ 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 (/ (- x y) (+ x y)) 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 (+ 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 -1 in y
0.047 * [taylor]: Taking taylor expansion of (* 2 (/ 1 y)) in y
0.047 * [taylor]: Taking taylor expansion of 2 in y
0.047 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.047 * [taylor]: Taking taylor expansion of y in y
0.049 * [taylor]: Taking taylor expansion of (- (* 2 (/ 1 (pow y 2)))) in y
0.049 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 2))) in y
0.049 * [taylor]: Taking taylor expansion of 2 in y
0.049 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.049 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.049 * [taylor]: Taking taylor expansion of y in y
0.055 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 3))) in y
0.055 * [taylor]: Taking taylor expansion of 2 in y
0.055 * [taylor]: Taking taylor expansion of (/ 1 (pow y 3)) in y
0.055 * [taylor]: Taking taylor expansion of (pow y 3) in y
0.055 * [taylor]: Taking taylor expansion of y in y
0.062 * [approximate]: Taking taylor expansion of (/ (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) in (x y) around 0
0.062 * [taylor]: Taking taylor expansion of (/ (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) in y
0.062 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in y
0.062 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.062 * [taylor]: Taking taylor expansion of x in y
0.062 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.062 * [taylor]: Taking taylor expansion of y in y
0.063 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in y
0.063 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.063 * [taylor]: Taking taylor expansion of y in y
0.063 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.063 * [taylor]: Taking taylor expansion of x in y
0.064 * [taylor]: Taking taylor expansion of (/ (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) in x
0.064 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.064 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.064 * [taylor]: Taking taylor expansion of x in x
0.065 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.065 * [taylor]: Taking taylor expansion of y in x
0.065 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.065 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.065 * [taylor]: Taking taylor expansion of y in x
0.065 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.065 * [taylor]: Taking taylor expansion of x in x
0.066 * [taylor]: Taking taylor expansion of (/ (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) in x
0.066 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.066 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.066 * [taylor]: Taking taylor expansion of x in x
0.067 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.067 * [taylor]: Taking taylor expansion of y in x
0.067 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.067 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.067 * [taylor]: Taking taylor expansion of y in x
0.067 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.067 * [taylor]: Taking taylor expansion of x in x
0.068 * [taylor]: Taking taylor expansion of 1 in y
0.070 * [taylor]: Taking taylor expansion of (- (* 2 (/ 1 y))) in y
0.070 * [taylor]: Taking taylor expansion of (* 2 (/ 1 y)) in y
0.070 * [taylor]: Taking taylor expansion of 2 in y
0.070 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.070 * [taylor]: Taking taylor expansion of y in y
0.074 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 2))) in y
0.074 * [taylor]: Taking taylor expansion of 2 in y
0.074 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.075 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.075 * [taylor]: Taking taylor expansion of y in y
0.083 * [taylor]: Taking taylor expansion of (- (* 2 (/ 1 (pow y 3)))) in y
0.083 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 3))) in y
0.083 * [taylor]: Taking taylor expansion of 2 in y
0.083 * [taylor]: Taking taylor expansion of (/ 1 (pow y 3)) in y
0.083 * [taylor]: Taking taylor expansion of (pow y 3) in y
0.083 * [taylor]: Taking taylor expansion of y in y
0.094 * [approximate]: Taking taylor expansion of (* -1 (/ (- (/ 1 y) (/ 1 x)) (+ (/ 1 y) (/ 1 x)))) in (x y) around 0
0.094 * [taylor]: Taking taylor expansion of (* -1 (/ (- (/ 1 y) (/ 1 x)) (+ (/ 1 y) (/ 1 x)))) in y
0.094 * [taylor]: Taking taylor expansion of -1 in y
0.094 * [taylor]: Taking taylor expansion of (/ (- (/ 1 y) (/ 1 x)) (+ (/ 1 y) (/ 1 x))) in y
0.094 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in y
0.094 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.094 * [taylor]: Taking taylor expansion of y in y
0.095 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.095 * [taylor]: Taking taylor expansion of x in y
0.095 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in y
0.095 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.095 * [taylor]: Taking taylor expansion of y in y
0.095 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.095 * [taylor]: Taking taylor expansion of x in y
0.096 * [taylor]: Taking taylor expansion of (* -1 (/ (- (/ 1 y) (/ 1 x)) (+ (/ 1 y) (/ 1 x)))) in x
0.096 * [taylor]: Taking taylor expansion of -1 in x
0.096 * [taylor]: Taking taylor expansion of (/ (- (/ 1 y) (/ 1 x)) (+ (/ 1 y) (/ 1 x))) in x
0.096 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.096 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.096 * [taylor]: Taking taylor expansion of y in x
0.096 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.096 * [taylor]: Taking taylor expansion of x in x
0.097 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.097 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.097 * [taylor]: Taking taylor expansion of y in x
0.097 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.097 * [taylor]: Taking taylor expansion of x in x
0.098 * [taylor]: Taking taylor expansion of (* -1 (/ (- (/ 1 y) (/ 1 x)) (+ (/ 1 y) (/ 1 x)))) in x
0.098 * [taylor]: Taking taylor expansion of -1 in x
0.098 * [taylor]: Taking taylor expansion of (/ (- (/ 1 y) (/ 1 x)) (+ (/ 1 y) (/ 1 x))) in x
0.098 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.098 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.099 * [taylor]: Taking taylor expansion of y in x
0.099 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.099 * [taylor]: Taking taylor expansion of x in x
0.099 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.099 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.099 * [taylor]: Taking taylor expansion of y in x
0.099 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.099 * [taylor]: Taking taylor expansion of x in x
0.101 * [taylor]: Taking taylor expansion of 1 in y
0.103 * [taylor]: Taking taylor expansion of (- (* 2 (/ 1 y))) in y
0.103 * [taylor]: Taking taylor expansion of (* 2 (/ 1 y)) in y
0.103 * [taylor]: Taking taylor expansion of 2 in y
0.103 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.103 * [taylor]: Taking taylor expansion of y in y
0.108 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 2))) in y
0.108 * [taylor]: Taking taylor expansion of 2 in y
0.108 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.108 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.108 * [taylor]: Taking taylor expansion of y in y
0.117 * [taylor]: Taking taylor expansion of (- (* 2 (/ 1 (pow y 3)))) in y
0.117 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 3))) in y
0.117 * [taylor]: Taking taylor expansion of 2 in y
0.117 * [taylor]: Taking taylor expansion of (/ 1 (pow y 3)) in y
0.117 * [taylor]: Taking taylor expansion of (pow y 3) in y
0.117 * [taylor]: Taking taylor expansion of y in y
0.124 * * * [progress]: simplifying candidates
0.125 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (expm1 (/ (- x y) (+ x y)))
  (log1p (/ (- x y) (+ x y)))
  (- (log (- x y)) (log (+ x y)))
  (log (/ (- x y) (+ x y)))
  (exp (/ (- x y) (+ x y)))
  (/ (* (* (- x y) (- x y)) (- x y)) (* (* (+ x y) (+ x y)) (+ x y)))
  (* (cbrt (/ (- x y) (+ x y))) (cbrt (/ (- x y) (+ x y))))
  (cbrt (/ (- x y) (+ x y)))
  (* (* (/ (- x y) (+ x y)) (/ (- x y) (+ x y))) (/ (- x y) (+ x y)))
  (sqrt (/ (- x y) (+ x y)))
  (sqrt (/ (- x y) (+ x y)))
  (- (- x y))
  (- (+ x y))
  (/ x (+ x y))
  (/ y (+ x y))
  (/ (* (cbrt (- x y)) (cbrt (- x y))) (* (cbrt (+ x y)) (cbrt (+ x y))))
  (/ (cbrt (- x y)) (cbrt (+ x y)))
  (/ (* (cbrt (- x y)) (cbrt (- x y))) (sqrt (+ x y)))
  (/ (cbrt (- x y)) (sqrt (+ x y)))
  (/ (* (cbrt (- x y)) (cbrt (- x y))) 1)
  (/ (cbrt (- x y)) (+ x y))
  (/ (* (cbrt (- x y)) (cbrt (- x y))) 1)
  (/ (cbrt (- x y)) (+ x y))
  (/ (sqrt (- x y)) (* (cbrt (+ x y)) (cbrt (+ x y))))
  (/ (sqrt (- x y)) (cbrt (+ x y)))
  (/ (sqrt (- x y)) (sqrt (+ x y)))
  (/ (sqrt (- x y)) (sqrt (+ x y)))
  (/ (sqrt (- x y)) 1)
  (/ (sqrt (- x y)) (+ x y))
  (/ (sqrt (- x y)) 1)
  (/ (sqrt (- x y)) (+ x y))
  (/ 1 (* (cbrt (+ x y)) (cbrt (+ x y))))
  (/ (- x y) (cbrt (+ x y)))
  (/ 1 (sqrt (+ x y)))
  (/ (- x y) (sqrt (+ x y)))
  (/ 1 1)
  (/ (- x y) (+ x y))
  (/ 1 1)
  (/ (- x y) (+ x y))
  (/ (+ (sqrt x) (sqrt y)) (* (cbrt (+ x y)) (cbrt (+ x y))))
  (/ (- (sqrt x) (sqrt y)) (cbrt (+ x y)))
  (/ (+ (sqrt x) (sqrt y)) (sqrt (+ x y)))
  (/ (- (sqrt x) (sqrt y)) (sqrt (+ x y)))
  (/ (+ (sqrt x) (sqrt y)) 1)
  (/ (- (sqrt x) (sqrt y)) (+ x y))
  (/ (+ (sqrt x) (sqrt y)) 1)
  (/ (- (sqrt x) (sqrt y)) (+ x y))
  (/ 1 (* (cbrt (+ x y)) (cbrt (+ x y))))
  (/ (- x y) (cbrt (+ x y)))
  (/ 1 (sqrt (+ x y)))
  (/ (- x y) (sqrt (+ x y)))
  (/ 1 1)
  (/ (- x y) (+ x y))
  (/ 1 1)
  (/ (- x y) (+ x y))
  (/ 1 (+ x y))
  (/ (+ x y) (- x y))
  (/ (- x y) (* (cbrt (+ x y)) (cbrt (+ x y))))
  (/ (- x y) (sqrt (+ x y)))
  (/ (- x y) 1)
  (/ (- x y) 1)
  (/ (+ x y) (cbrt (- x y)))
  (/ (+ x y) (sqrt (- x y)))
  (/ (+ x y) (- x y))
  (/ (+ x y) (- (sqrt x) (sqrt y)))
  (/ (+ x y) (- x y))
  (/ (- x y) (+ (pow x 3) (pow y 3)))
  (/ (- x y) (- (* x x) (* y y)))
  (* (+ x y) (+ (* x x) (+ (* y y) (* x y))))
  (* (+ x y) (+ x y))
  -1
  1
  1
0.128 * * [simplify]: iteration  0 :  80  enodes  (cost  616 )
0.142 * * [simplify]: iteration  1 :  192  enodes  (cost  588 )