0.819 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.011 * * * [progress]: [2/2] Setting up program.
0.012 * [progress]: [Phase 2 of 3] Improving.
0.013 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (/ (+ x y) (- x y))
0.013 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.014 * * [simplify]: iteration  1 :  8  enodes  (cost  7 )
0.015 * * [simplify]: iteration  2 :  9  enodes  (cost  7 )
0.016 * * [simplify]: iteration  done :  9  enodes  (cost  7 )
0.016 * [simplify]: Simplified to:
   (/ (+ x y) (- x y))
0.016 * * [progress]: iteration 1 / 4
0.016 * * * [progress]: picking best candidate
0.018 * * * * [pick]: Picked  #<alt (λ (x y) (/ (+ x y) (- x y)))>
0.018 * * * [progress]: localizing error
0.023 * * * [progress]: generating rewritten candidates
0.023 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.035 * * * [progress]: generating series expansions
0.035 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.035 * [approximate]: Taking taylor expansion of (/ (+ x y) (- x y)) in (x y) around 0
0.036 * [taylor]: Taking taylor expansion of (/ (+ x y) (- x y)) in y
0.036 * [taylor]: Taking taylor expansion of (+ x y) in y
0.036 * [taylor]: Taking taylor expansion of x in y
0.036 * [taylor]: Taking taylor expansion of y in y
0.036 * [taylor]: Taking taylor expansion of (- x y) in y
0.036 * [taylor]: Taking taylor expansion of x in y
0.036 * [taylor]: Taking taylor expansion of y in y
0.036 * [taylor]: Taking taylor expansion of (/ (+ x y) (- x y)) in x
0.036 * [taylor]: Taking taylor expansion of (+ x y) in x
0.036 * [taylor]: Taking taylor expansion of x in x
0.036 * [taylor]: Taking taylor expansion of y in x
0.036 * [taylor]: Taking taylor expansion of (- x y) in x
0.036 * [taylor]: Taking taylor expansion of x in x
0.036 * [taylor]: Taking taylor expansion of y in x
0.036 * [taylor]: Taking taylor expansion of (/ (+ x y) (- x y)) in x
0.036 * [taylor]: Taking taylor expansion of (+ x y) in x
0.036 * [taylor]: Taking taylor expansion of x in x
0.036 * [taylor]: Taking taylor expansion of y in x
0.036 * [taylor]: Taking taylor expansion of (- x y) in x
0.036 * [taylor]: Taking taylor expansion of x in x
0.036 * [taylor]: Taking taylor expansion of y in x
0.037 * [taylor]: Taking taylor expansion of -1 in y
0.038 * [taylor]: Taking taylor expansion of (- (* 2 (/ 1 y))) in y
0.038 * [taylor]: Taking taylor expansion of (* 2 (/ 1 y)) in y
0.038 * [taylor]: Taking taylor expansion of 2 in y
0.038 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.038 * [taylor]: Taking taylor expansion of y in y
0.043 * [taylor]: Taking taylor expansion of (- (* 2 (/ 1 (pow y 2)))) in y
0.043 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 2))) in y
0.043 * [taylor]: Taking taylor expansion of 2 in y
0.043 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.043 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.043 * [taylor]: Taking taylor expansion of y in y
0.049 * [taylor]: Taking taylor expansion of (- (* 2 (/ 1 (pow y 3)))) in y
0.049 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 3))) in y
0.049 * [taylor]: Taking taylor expansion of 2 in y
0.049 * [taylor]: Taking taylor expansion of (/ 1 (pow y 3)) in y
0.049 * [taylor]: Taking taylor expansion of (pow y 3) in y
0.049 * [taylor]: Taking taylor expansion of y in y
0.055 * [approximate]: Taking taylor expansion of (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 x) (/ 1 y))) in (x y) around 0
0.055 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 x) (/ 1 y))) in y
0.055 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in y
0.055 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.055 * [taylor]: Taking taylor expansion of y in y
0.055 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.055 * [taylor]: Taking taylor expansion of x in y
0.055 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in y
0.055 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.055 * [taylor]: Taking taylor expansion of x in y
0.056 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.056 * [taylor]: Taking taylor expansion of y in y
0.057 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 x) (/ 1 y))) in x
0.057 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.057 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.057 * [taylor]: Taking taylor expansion of y in x
0.057 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.057 * [taylor]: Taking taylor expansion of x in x
0.057 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.057 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.057 * [taylor]: Taking taylor expansion of x in x
0.057 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.057 * [taylor]: Taking taylor expansion of y in x
0.058 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 x) (/ 1 y))) in x
0.058 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.058 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.058 * [taylor]: Taking taylor expansion of y in x
0.058 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.058 * [taylor]: Taking taylor expansion of x in x
0.059 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.059 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.059 * [taylor]: Taking taylor expansion of x in x
0.059 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.059 * [taylor]: Taking taylor expansion of y in x
0.060 * [taylor]: Taking taylor expansion of 1 in y
0.061 * [taylor]: Taking taylor expansion of (* 2 (/ 1 y)) in y
0.061 * [taylor]: Taking taylor expansion of 2 in y
0.061 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.061 * [taylor]: Taking taylor expansion of y in y
0.065 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 2))) in y
0.065 * [taylor]: Taking taylor expansion of 2 in y
0.065 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.065 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.065 * [taylor]: Taking taylor expansion of y in y
0.072 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 3))) in y
0.072 * [taylor]: Taking taylor expansion of 2 in y
0.072 * [taylor]: Taking taylor expansion of (/ 1 (pow y 3)) in y
0.072 * [taylor]: Taking taylor expansion of (pow y 3) in y
0.072 * [taylor]: Taking taylor expansion of y in y
0.078 * [approximate]: Taking taylor expansion of (* -1 (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x)))) in (x y) around 0
0.078 * [taylor]: Taking taylor expansion of (* -1 (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x)))) in y
0.078 * [taylor]: Taking taylor expansion of -1 in y
0.078 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) in y
0.078 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in y
0.078 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.078 * [taylor]: Taking taylor expansion of y in y
0.078 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.078 * [taylor]: Taking taylor expansion of x in y
0.078 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in y
0.078 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.078 * [taylor]: Taking taylor expansion of y in y
0.078 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.078 * [taylor]: Taking taylor expansion of x in y
0.079 * [taylor]: Taking taylor expansion of (* -1 (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x)))) in x
0.079 * [taylor]: Taking taylor expansion of -1 in x
0.079 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) in x
0.079 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.079 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.079 * [taylor]: Taking taylor expansion of y in x
0.079 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.079 * [taylor]: Taking taylor expansion of x in x
0.080 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.080 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.080 * [taylor]: Taking taylor expansion of y in x
0.080 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.080 * [taylor]: Taking taylor expansion of x in x
0.081 * [taylor]: Taking taylor expansion of (* -1 (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x)))) in x
0.081 * [taylor]: Taking taylor expansion of -1 in x
0.081 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) in x
0.081 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.081 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.081 * [taylor]: Taking taylor expansion of y in x
0.081 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.081 * [taylor]: Taking taylor expansion of x in x
0.081 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.081 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.082 * [taylor]: Taking taylor expansion of y in x
0.082 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.082 * [taylor]: Taking taylor expansion of x in x
0.083 * [taylor]: Taking taylor expansion of 1 in y
0.085 * [taylor]: Taking taylor expansion of (* 2 (/ 1 y)) in y
0.085 * [taylor]: Taking taylor expansion of 2 in y
0.085 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.085 * [taylor]: Taking taylor expansion of y in y
0.089 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 2))) in y
0.089 * [taylor]: Taking taylor expansion of 2 in y
0.089 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.089 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.089 * [taylor]: Taking taylor expansion of y in y
0.096 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 3))) in y
0.096 * [taylor]: Taking taylor expansion of 2 in y
0.096 * [taylor]: Taking taylor expansion of (/ 1 (pow y 3)) in y
0.096 * [taylor]: Taking taylor expansion of (pow y 3) in y
0.096 * [taylor]: Taking taylor expansion of y in y
0.102 * * * [progress]: simplifying candidates
0.103 * [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))
  (/ (* (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))) (+ (sqrt x) (sqrt y)))
  (/ (cbrt (+ x y)) (- (sqrt x) (sqrt 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)) (+ (sqrt x) (sqrt y)))
  (/ (sqrt (+ x y)) (- (sqrt x) (sqrt 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 (+ (sqrt x) (sqrt y)))
  (/ (+ x y) (- (sqrt x) (sqrt y)))
  (/ 1 1)
  (/ (+ 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 (+ (sqrt x) (sqrt y)))
  (/ (+ x y) (- (sqrt x) (sqrt 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) (+ (sqrt x) (sqrt y)))
  (/ (+ x y) 1)
  (/ (- x y) (cbrt (+ x y)))
  (/ (- x y) (sqrt (+ x y)))
  (/ (- x y) (+ x 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
0.105 * * [simplify]: iteration  0 :  78  enodes  (cost  606 )
0.119 * * [simplify]: iteration  1 :  175  enodes  (cost  582 )
0.145 * * [simplify]: iteration  2 :  439  enodes  (cost  554 )