20.369 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.036 * * * [progress]: [2/2] Setting up program.
0.039 * [progress]: [Phase 2 of 3] Improving.
0.040 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ (* (- x y) (+ x y)) (+ (* x x) (* y y)))
0.081 * * [simplify]: iteration  0 :  5102  enodes  (cost  15 )
0.082 * [simplify]: Simplified to:
   (* (- x y) (/ (+ x y) (+ (* x x) (* y y))))
0.086 * * [progress]: iteration 1 / 4
0.086 * * * [progress]: picking best candidate
0.090 * * * * [pick]: Picked  #<alt (λ (x y) (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))))>
0.090 * * * [progress]: localizing error
0.098 * * * [progress]: generating rewritten candidates
0.098 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.111 * * * [progress]: generating series expansions
0.111 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.111 * [approximate]: Taking taylor expansion of (/ (* (+ x y) (- x y)) (+ (pow x 2) (pow y 2))) in (x y) around 0
0.111 * [taylor]: Taking taylor expansion of (/ (* (+ x y) (- x y)) (+ (pow x 2) (pow y 2))) in y
0.111 * [taylor]: Taking taylor expansion of (* (+ x y) (- x y)) in y
0.111 * [taylor]: Taking taylor expansion of (+ x y) in y
0.111 * [taylor]: Taking taylor expansion of x in y
0.111 * [taylor]: Taking taylor expansion of y in y
0.111 * [taylor]: Taking taylor expansion of (- x y) in y
0.111 * [taylor]: Taking taylor expansion of x in y
0.111 * [taylor]: Taking taylor expansion of y in y
0.112 * [taylor]: Taking taylor expansion of (+ (pow x 2) (pow y 2)) in y
0.112 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.112 * [taylor]: Taking taylor expansion of x in y
0.112 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.112 * [taylor]: Taking taylor expansion of y in y
0.112 * [taylor]: Taking taylor expansion of (/ (* (+ x y) (- x y)) (+ (pow x 2) (pow y 2))) in x
0.112 * [taylor]: Taking taylor expansion of (* (+ x y) (- x y)) in x
0.112 * [taylor]: Taking taylor expansion of (+ x y) in x
0.112 * [taylor]: Taking taylor expansion of x in x
0.112 * [taylor]: Taking taylor expansion of y in x
0.112 * [taylor]: Taking taylor expansion of (- x y) in x
0.112 * [taylor]: Taking taylor expansion of x in x
0.112 * [taylor]: Taking taylor expansion of y in x
0.112 * [taylor]: Taking taylor expansion of (+ (pow x 2) (pow y 2)) in x
0.112 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.112 * [taylor]: Taking taylor expansion of x in x
0.112 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.112 * [taylor]: Taking taylor expansion of y in x
0.112 * [taylor]: Taking taylor expansion of (/ (* (+ x y) (- x y)) (+ (pow x 2) (pow y 2))) in x
0.112 * [taylor]: Taking taylor expansion of (* (+ x y) (- x y)) in x
0.112 * [taylor]: Taking taylor expansion of (+ x y) in x
0.112 * [taylor]: Taking taylor expansion of x in x
0.112 * [taylor]: Taking taylor expansion of y in x
0.112 * [taylor]: Taking taylor expansion of (- x y) in x
0.112 * [taylor]: Taking taylor expansion of x in x
0.112 * [taylor]: Taking taylor expansion of y in x
0.112 * [taylor]: Taking taylor expansion of (+ (pow x 2) (pow y 2)) in x
0.112 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.112 * [taylor]: Taking taylor expansion of x in x
0.112 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.112 * [taylor]: Taking taylor expansion of y in x
0.113 * [taylor]: Taking taylor expansion of -1 in y
0.113 * [taylor]: Taking taylor expansion of 0 in y
0.113 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 2))) in y
0.113 * [taylor]: Taking taylor expansion of 2 in y
0.113 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.113 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.113 * [taylor]: Taking taylor expansion of y in y
0.114 * [taylor]: Taking taylor expansion of 0 in y
0.114 * [approximate]: Taking taylor expansion of (/ (* (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) (+ (/ 1 (pow x 2)) (/ 1 (pow y 2)))) in (x y) around 0
0.114 * [taylor]: Taking taylor expansion of (/ (* (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) (+ (/ 1 (pow x 2)) (/ 1 (pow y 2)))) in y
0.114 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) in y
0.114 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in y
0.114 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.114 * [taylor]: Taking taylor expansion of x in y
0.114 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.114 * [taylor]: Taking taylor expansion of y in y
0.114 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in y
0.114 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.114 * [taylor]: Taking taylor expansion of y in y
0.114 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.114 * [taylor]: Taking taylor expansion of x in y
0.114 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
0.115 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.115 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.115 * [taylor]: Taking taylor expansion of x in y
0.115 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.115 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.115 * [taylor]: Taking taylor expansion of y in y
0.115 * [taylor]: Taking taylor expansion of (/ (* (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) (+ (/ 1 (pow x 2)) (/ 1 (pow y 2)))) in x
0.115 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) in x
0.115 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.115 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.115 * [taylor]: Taking taylor expansion of x in x
0.115 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.115 * [taylor]: Taking taylor expansion of y in x
0.115 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.115 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.115 * [taylor]: Taking taylor expansion of y in x
0.115 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.115 * [taylor]: Taking taylor expansion of x in x
0.115 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
0.115 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.115 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.115 * [taylor]: Taking taylor expansion of x in x
0.115 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.115 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.115 * [taylor]: Taking taylor expansion of y in x
0.115 * [taylor]: Taking taylor expansion of (/ (* (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) (+ (/ 1 (pow x 2)) (/ 1 (pow y 2)))) in x
0.115 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) in x
0.115 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.115 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.115 * [taylor]: Taking taylor expansion of x in x
0.115 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.115 * [taylor]: Taking taylor expansion of y in x
0.115 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.115 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.116 * [taylor]: Taking taylor expansion of y in x
0.116 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.116 * [taylor]: Taking taylor expansion of x in x
0.116 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
0.116 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.116 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.116 * [taylor]: Taking taylor expansion of x in x
0.116 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.116 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.116 * [taylor]: Taking taylor expansion of y in x
0.116 * [taylor]: Taking taylor expansion of 1 in y
0.116 * [taylor]: Taking taylor expansion of 0 in y
0.117 * [taylor]: Taking taylor expansion of (neg (* 2 (/ 1 (pow y 2)))) in y
0.117 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 2))) in y
0.117 * [taylor]: Taking taylor expansion of 2 in y
0.117 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.117 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.117 * [taylor]: Taking taylor expansion of y in y
0.118 * [taylor]: Taking taylor expansion of 0 in y
0.118 * [approximate]: Taking taylor expansion of (* -1 (/ (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) (+ (/ 1 (pow x 2)) (/ 1 (pow y 2))))) in (x y) around 0
0.118 * [taylor]: Taking taylor expansion of (* -1 (/ (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) (+ (/ 1 (pow x 2)) (/ 1 (pow y 2))))) in y
0.118 * [taylor]: Taking taylor expansion of -1 in y
0.118 * [taylor]: Taking taylor expansion of (/ (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) (+ (/ 1 (pow x 2)) (/ 1 (pow y 2)))) in y
0.118 * [taylor]: Taking taylor expansion of (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) in y
0.118 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in y
0.118 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.118 * [taylor]: Taking taylor expansion of y in y
0.118 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.118 * [taylor]: Taking taylor expansion of x in y
0.118 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in y
0.118 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.118 * [taylor]: Taking taylor expansion of y in y
0.118 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.119 * [taylor]: Taking taylor expansion of x in y
0.119 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
0.119 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.119 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.119 * [taylor]: Taking taylor expansion of x in y
0.119 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.119 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.119 * [taylor]: Taking taylor expansion of y in y
0.119 * [taylor]: Taking taylor expansion of (* -1 (/ (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) (+ (/ 1 (pow x 2)) (/ 1 (pow y 2))))) in x
0.119 * [taylor]: Taking taylor expansion of -1 in x
0.119 * [taylor]: Taking taylor expansion of (/ (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) (+ (/ 1 (pow x 2)) (/ 1 (pow y 2)))) in x
0.119 * [taylor]: Taking taylor expansion of (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) in x
0.119 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.119 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.119 * [taylor]: Taking taylor expansion of y in x
0.119 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.119 * [taylor]: Taking taylor expansion of x in x
0.119 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.119 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.119 * [taylor]: Taking taylor expansion of y in x
0.119 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.119 * [taylor]: Taking taylor expansion of x in x
0.119 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
0.119 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.119 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.119 * [taylor]: Taking taylor expansion of x in x
0.119 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.119 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.119 * [taylor]: Taking taylor expansion of y in x
0.119 * [taylor]: Taking taylor expansion of (* -1 (/ (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) (+ (/ 1 (pow x 2)) (/ 1 (pow y 2))))) in x
0.119 * [taylor]: Taking taylor expansion of -1 in x
0.119 * [taylor]: Taking taylor expansion of (/ (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) (+ (/ 1 (pow x 2)) (/ 1 (pow y 2)))) in x
0.119 * [taylor]: Taking taylor expansion of (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) in x
0.119 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.119 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.119 * [taylor]: Taking taylor expansion of y in x
0.120 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.120 * [taylor]: Taking taylor expansion of x in x
0.120 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.120 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.120 * [taylor]: Taking taylor expansion of y in x
0.120 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.120 * [taylor]: Taking taylor expansion of x in x
0.120 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
0.120 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.120 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.120 * [taylor]: Taking taylor expansion of x in x
0.120 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.120 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.120 * [taylor]: Taking taylor expansion of y in x
0.120 * [taylor]: Taking taylor expansion of 1 in y
0.120 * [taylor]: Taking taylor expansion of 0 in y
0.121 * [taylor]: Taking taylor expansion of (neg (* 2 (/ 1 (pow y 2)))) in y
0.121 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow y 2))) in y
0.121 * [taylor]: Taking taylor expansion of 2 in y
0.121 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.121 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.121 * [taylor]: Taking taylor expansion of y in y
0.122 * [taylor]: Taking taylor expansion of 0 in y
0.122 * * * [progress]: simplifying candidates
0.122 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (+ (log (- x y)) (log (+ x y))) (log (+ (* x x) (* y y))))
  (- (log (* (- x y) (+ x y))) (log (+ (* x x) (* y y))))
  (log (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))))
  (exp (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))))
  (/ (* (* (* (- x y) (- x y)) (- x y)) (* (* (+ x y) (+ x y)) (+ x y))) (* (* (+ (* x x) (* y y)) (+ (* x x) (* y y))) (+ (* x x) (* y y))))
  (/ (* (* (* (- x y) (+ x y)) (* (- x y) (+ x y))) (* (- x y) (+ x y))) (* (* (+ (* x x) (* y y)) (+ (* x x) (* y y))) (+ (* x x) (* y y))))
  (* (cbrt (/ (* (- x y) (+ x y)) (+ (* x x) (* y y)))) (cbrt (/ (* (- x y) (+ x y)) (+ (* x x) (* y y)))))
  (cbrt (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))))
  (* (* (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))) (/ (* (- x y) (+ x y)) (+ (* x x) (* y y)))) (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))))
  (sqrt (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))))
  (sqrt (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))))
  (neg (* (- x y) (+ x y)))
  (neg (+ (* x x) (* y y)))
  (/ (- x y) (* (cbrt (+ (* x x) (* y y))) (cbrt (+ (* x x) (* y y)))))
  (/ (+ x y) (cbrt (+ (* x x) (* y y))))
  (/ (- x y) (sqrt (+ (* x x) (* y y))))
  (/ (+ x y) (sqrt (+ (* x x) (* y y))))
  (/ (- x y) 1)
  (/ (+ x y) (+ (* x x) (* y y)))
  (/ 1 (+ (* x x) (* y y)))
  (/ (+ (* x x) (* y y)) (* (- x y) (+ x y)))
  (/ (* (- x y) (+ x y)) (* (cbrt (+ (* x x) (* y y))) (cbrt (+ (* x x) (* y y)))))
  (/ (* (- x y) (+ x y)) (sqrt (+ (* x x) (* y y))))
  (/ (* (- x y) (+ x y)) 1)
  (/ (+ (* x x) (* y y)) (+ x y))
  (/ (* (- x y) (+ x y)) (+ (pow (* x x) 3) (pow (* y y) 3)))
  (/ (* (- x y) (+ x y)) (- (* (* x x) (* x x)) (* (* y y) (* y y))))
  (* (+ (* x x) (* y y)) (* (+ (* x x) (+ (* y y) (* x y))) (+ (* x x) (- (* y y) (* x y)))))
  (* (+ (* x x) (* y y)) (* (+ (* x x) (+ (* y y) (* x y))) (- x y)))
  (* (+ (* x x) (* y y)) (* (+ x y) (+ (* x x) (- (* y y) (* x y)))))
  (* (+ (* x x) (* y y)) (* (+ x y) (- x y)))
  (* (+ (* x x) (* y y)) (+ (* x x) (- (* y y) (* x y))))
  (* (+ (* x x) (* y y)) (- x y))
  (* (+ (* x x) (* y y)) (+ (* x x) (+ (* y y) (* x y))))
  (* (+ (* x x) (* y y)) (+ x y))
  -1
  1
  1
0.152 * * [simplify]: iteration  0 :  5190  enodes  (cost  531 )
0.154 * [simplify]: Simplified to:
   (log (* (/ (+ x y) (+ (* x x) (* y y))) (- x y)))
  (log (* (/ (+ x y) (+ (* x x) (* y y))) (- x y)))
  (log (* (/ (+ x y) (+ (* x x) (* y y))) (- x y)))
  (pow (exp (/ (- x y) (+ (* x x) (* y y)))) (+ x y))
  (pow (* (/ (+ x y) (+ (* x x) (* y y))) (- x y)) 3)
  (pow (* (/ (+ x y) (+ (* x x) (* y y))) (- x y)) 3)
  (* (cbrt (* (/ (+ x y) (+ (* x x) (* y y))) (- x y))) (cbrt (* (/ (+ x y) (+ (* x x) (* y y))) (- x y))))
  (cbrt (* (/ (+ x y) (+ (* x x) (* y y))) (- x y)))
  (pow (* (/ (+ x y) (+ (* x x) (* y y))) (- x y)) 3)
  (sqrt (* (/ (+ x y) (+ (* x x) (* y y))) (- x y)))
  (sqrt (* (/ (+ x y) (+ (* x x) (* y y))) (- x y)))
  (* (- x y) (neg (+ x y)))
  (neg (+ (* x x) (* y y)))
  (/ (- x y) (* (cbrt (+ (* x x) (* y y))) (cbrt (+ (* x x) (* y y)))))
  (/ (+ x y) (cbrt (+ (* x x) (* y y))))
  (/ (- x y) (sqrt (+ (* x x) (* y y))))
  (/ (+ x y) (sqrt (+ (* x x) (* y y))))
  (- x y)
  (/ (+ x y) (+ (* x x) (* y y)))
  (/ 1 (+ (* x x) (* y y)))
  (/ (+ (* x x) (* y y)) (- (* x x) (* y y)))
  (* (/ (- x y) (* (cbrt (+ (* x x) (* y y))) (cbrt (+ (* x x) (* y y))))) (+ x y))
  (* (/ (- x y) (sqrt (+ (* x x) (* y y)))) (+ x y))
  (- (* x x) (* y y))
  (/ (+ (* x x) (* y y)) (+ x y))
  (* (/ (- x y) (+ (pow x 6) (pow y 6))) (+ x y))
  (* (/ (- x y) (- (pow x 4) (pow y 4))) (+ x y))
  (* (+ (* x x) (* y y)) (* (+ (* x x) (* y (+ x y))) (+ (* x x) (* y (- y x)))))
  (* (- x y) (* (+ (* x x) (* y y)) (+ (* x x) (* y (+ x y)))))
  (* (+ x y) (* (+ (* x x) (* y y)) (+ (* x x) (* y (- y x)))))
  (- (pow x 4) (pow y 4))
  (* (+ (* x x) (* y y)) (+ (* x x) (* y (- y x))))
  (* (- x y) (+ (* x x) (* y y)))
  (* (+ (* x x) (* y y)) (+ (* x x) (* y (+ x y))))
  (* (+ x y) (+ (* x x) (* y y)))
  -1
  1
  1
0.154 * * * [progress]: adding candidates to table
0.191 * * [progress]: iteration 2 / 4
0.191 * * * [progress]: picking best candidate
0.195 * * * * [pick]: Picked  #<alt (λ (x y) -1)>
0.195 * * * [progress]: localizing error
0.195 * * * [progress]: generating rewritten candidates
0.195 * * * [progress]: generating series expansions
0.195 * * * [progress]: simplifying candidates
0.195 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.197 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.198 * [simplify]: Simplified to:
   
0.198 * * * [progress]: adding candidates to table
0.198 * * [progress]: iteration 3 / 4
0.198 * * * [progress]: picking best candidate
0.200 * * * * [pick]: Picked  #<alt (λ (x y) 1)>
0.200 * * * [progress]: localizing error
0.200 * * * [progress]: generating rewritten candidates
0.200 * * * [progress]: generating series expansions
0.200 * * * [progress]: simplifying candidates
0.200 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.203 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.203 * [simplify]: Simplified to:
   
0.203 * * * [progress]: adding candidates to table
0.203 * [progress]: [Phase 3 of 3] Extracting.
0.203 * * [regime]: Finding splitpoints for: (#<alt (λ (x y) (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))))> #<alt (λ (x y) -1)> #<alt (λ (x y) 1)>)
0.203 * * * [regime-changes]: Trying 3 branch expressions: ((/ (* (- x y) (+ x y)) (+ (* x x) (* y y))) y x)
0.203 * * * * [regimes]: Trying to branch on (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))) from (#<alt (λ (x y) (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))))> #<alt (λ (x y) -1)> #<alt (λ (x y) 1)>)
0.236 * * * * [regimes]: Trying to branch on y from (#<alt (λ (x y) (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))))> #<alt (λ (x y) -1)> #<alt (λ (x y) 1)>)
0.284 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x y) (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))))> #<alt (λ (x y) -1)> #<alt (λ (x y) 1)>)
0.330 * * * [regime]: Found split indices: #<option (#s(si 1 41) #s(si 0 123) #s(si 2 210) #s(si 0 255))>
0.330 * [binary-search]: Improving bounds with binary search for y and (#<alt (λ (x y) (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))))> #<alt (λ (x y) -1)> #<alt (λ (x y) 1)>)
0.411 * [regimes]: Found splitpoints: (#s(sp 1 y -3.093872020900152e+153) #s(sp 0 y -1.8407681256304194e-159) #s(sp 2 y 6.147288565032054e-174) #s(sp 0 y +nan.0)) , with alts (#<alt (λ (x y) (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))))> #<alt (λ (x y) -1)> #<alt (λ (x y) 1)>)
0.412 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (if (<= y -3.093872020900152e+153) -1 (if (<= y -1.8407681256304194e-159) (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))) (if (<= y 6.147288565032054e-174) 1 (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))))))
0.412 * * [simplify]: iteration  0 :  27  enodes  (cost  30 )
0.412 * * [simplify]: iteration  1 :  27  enodes  (cost  30 )
0.413 * [simplify]: Simplified to:
   (if (<= y -3.093872020900152e+153) -1 (if (or (<= y -1.8407681256304194e-159) (not (<= y 6.147288565032054e-174))) (/ (* (- x y) (+ y x)) (+ (* x x) (* y y))) 1))
1.343 * [regime-testing]: End program error score: 5.17027266151483
1.436 * [regime-testing]: Target error score: 0.07353776409893786