6.035 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.058 * * * [progress]: [2/2] Setting up program.
0.060 * [progress]: [Phase 2 of 3] Improving.
0.060 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- x (* y y))
0.065 * * [simplify]: iteration  0 :  89  enodes  (cost  5 )
0.065 * * [simplify]: iteration  1 :  89  enodes  (cost  5 )
0.065 * [simplify]: Simplified to:
   (- x (* y y))
0.065 * * [progress]: iteration 1 / 4
0.065 * * * [progress]: picking best candidate
0.067 * * * * [pick]: Picked  #<alt (λ (x y) (- x (* y y)))>
0.067 * * * [progress]: localizing error
0.075 * * * [progress]: generating rewritten candidates
0.075 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.078 * * * [progress]: generating series expansions
0.078 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.078 * [approximate]: Taking taylor expansion of (- x (pow y 2)) in (x y) around 0
0.078 * [taylor]: Taking taylor expansion of (- x (pow y 2)) in y
0.078 * [taylor]: Taking taylor expansion of x in y
0.078 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.078 * [taylor]: Taking taylor expansion of y in y
0.078 * [taylor]: Taking taylor expansion of (- x (pow y 2)) in x
0.078 * [taylor]: Taking taylor expansion of x in x
0.078 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.078 * [taylor]: Taking taylor expansion of y in x
0.078 * [taylor]: Taking taylor expansion of (- x (pow y 2)) in x
0.078 * [taylor]: Taking taylor expansion of x in x
0.078 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.078 * [taylor]: Taking taylor expansion of y in x
0.078 * [taylor]: Taking taylor expansion of (neg (pow y 2)) in y
0.078 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.078 * [taylor]: Taking taylor expansion of y in y
0.078 * [taylor]: Taking taylor expansion of 1 in y
0.079 * [taylor]: Taking taylor expansion of 0 in y
0.079 * [taylor]: Taking taylor expansion of 0 in y
0.079 * [taylor]: Taking taylor expansion of 0 in y
0.079 * [approximate]: Taking taylor expansion of (- (/ 1 x) (/ 1 (pow y 2))) in (x y) around 0
0.079 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 (pow y 2))) in y
0.079 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.079 * [taylor]: Taking taylor expansion of x in y
0.079 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.079 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.079 * [taylor]: Taking taylor expansion of y in y
0.079 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 (pow y 2))) in x
0.079 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.079 * [taylor]: Taking taylor expansion of x in x
0.079 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.079 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.079 * [taylor]: Taking taylor expansion of y in x
0.079 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 (pow y 2))) in x
0.079 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.079 * [taylor]: Taking taylor expansion of x in x
0.079 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.079 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.079 * [taylor]: Taking taylor expansion of y in x
0.080 * [taylor]: Taking taylor expansion of 1 in y
0.080 * [taylor]: Taking taylor expansion of (neg (/ 1 (pow y 2))) in y
0.080 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.080 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.080 * [taylor]: Taking taylor expansion of y in y
0.080 * [taylor]: Taking taylor expansion of 0 in y
0.080 * [taylor]: Taking taylor expansion of 0 in y
0.081 * [taylor]: Taking taylor expansion of 0 in y
0.081 * [taylor]: Taking taylor expansion of 0 in y
0.082 * [approximate]: Taking taylor expansion of (neg (+ (/ 1 (pow y 2)) (/ 1 x))) in (x y) around 0
0.082 * [taylor]: Taking taylor expansion of (neg (+ (/ 1 (pow y 2)) (/ 1 x))) in y
0.082 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow y 2)) (/ 1 x)) in y
0.082 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.082 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.082 * [taylor]: Taking taylor expansion of y in y
0.082 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.082 * [taylor]: Taking taylor expansion of x in y
0.082 * [taylor]: Taking taylor expansion of (neg (+ (/ 1 (pow y 2)) (/ 1 x))) in x
0.082 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow y 2)) (/ 1 x)) in x
0.082 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.082 * [taylor]: Taking taylor expansion of (pow y 2) 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
0.082 * [taylor]: Taking taylor expansion of (neg (+ (/ 1 (pow y 2)) (/ 1 x))) in x
0.082 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow y 2)) (/ 1 x)) in x
0.082 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.082 * [taylor]: Taking taylor expansion of (pow y 2) 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
0.082 * [taylor]: Taking taylor expansion of (neg 1) in y
0.082 * [taylor]: Taking taylor expansion of 1 in y
0.082 * [taylor]: Taking taylor expansion of (neg (/ 1 (pow y 2))) in y
0.082 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.082 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.082 * [taylor]: Taking taylor expansion of y in y
0.083 * [taylor]: Taking taylor expansion of 0 in y
0.083 * [taylor]: Taking taylor expansion of 0 in y
0.083 * [taylor]: Taking taylor expansion of 0 in y
0.084 * [taylor]: Taking taylor expansion of 0 in y
0.084 * * * [progress]: simplifying candidates
0.084 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ (exp x) (exp (* y y)))
  (log (- x (* y y)))
  (exp (- x (* y y)))
  (* (cbrt (- x (* y y))) (cbrt (- x (* y y))))
  (cbrt (- x (* y y)))
  (* (* (- x (* y y)) (- x (* y y))) (- x (* y y)))
  (sqrt (- x (* y y)))
  (sqrt (- x (* y y)))
  (- (pow x 3) (pow (* y y) 3))
  (+ (* x x) (+ (* (* y y) (* y y)) (* x (* y y))))
  (neg (* y y))
  (- (* x x) (* (* y y) (* y y)))
  (+ x (* y y))
  (+ (sqrt x) y)
  (- (sqrt x) y)
  (- x (pow y 2))
  (- x (pow y 2))
  (- x (pow y 2))
0.116 * * [simplify]: iteration  0 :  4939  enodes  (cost  113 )
0.116 * * [simplify]: iteration  1 :  4939  enodes  (cost  113 )
0.117 * [simplify]: Simplified to:
   (exp (- x (* y y)))
  (log (- x (* y y)))
  (exp (- x (* y y)))
  (* (cbrt (- x (* y y))) (cbrt (- x (* y y))))
  (cbrt (- x (* y y)))
  (pow (- x (* y y)) 3)
  (sqrt (- x (* y y)))
  (sqrt (- x (* y y)))
  (- (pow x 3) (pow y 6))
  (+ (pow y 4) (* x (+ x (* y y))))
  (* y (neg y))
  (- (* x x) (pow y 4))
  (+ x (* y y))
  (+ y (sqrt x))
  (- (sqrt x) y)
  (- x (* y y))
  (- x (* y y))
  (- x (* y y))
0.117 * * * [progress]: adding candidates to table
0.132 * * [progress]: iteration 2 / 4
0.132 * * * [progress]: picking best candidate
0.135 * * * * [pick]: Picked  #<alt (λ (x y) (/ (- (* x x) (pow y 4)) (+ x (* y y))))>
0.135 * * * [progress]: localizing error
0.143 * * * [progress]: generating rewritten candidates
0.143 * * * * [progress]: [ 1 / 3 ] rewriting at (2)
0.152 * * * * [progress]: [ 2 / 3 ] rewriting at (2 1)
0.157 * * * * [progress]: [ 3 / 3 ] rewriting at (2 2)
0.161 * * * [progress]: generating series expansions
0.161 * * * * [progress]: [ 1 / 3 ] generating series at (2)
0.161 * [approximate]: Taking taylor expansion of (/ (- (pow x 2) (pow y 4)) (+ x (pow y 2))) in (x y) around 0
0.161 * [taylor]: Taking taylor expansion of (/ (- (pow x 2) (pow y 4)) (+ x (pow y 2))) in y
0.161 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 4)) in y
0.161 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.161 * [taylor]: Taking taylor expansion of x in y
0.161 * [taylor]: Taking taylor expansion of (pow y 4) in y
0.161 * [taylor]: Taking taylor expansion of y in y
0.161 * [taylor]: Taking taylor expansion of (+ x (pow y 2)) in y
0.161 * [taylor]: Taking taylor expansion of x in y
0.161 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.161 * [taylor]: Taking taylor expansion of y in y
0.162 * [taylor]: Taking taylor expansion of (/ (- (pow x 2) (pow y 4)) (+ x (pow y 2))) in x
0.162 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 4)) in x
0.162 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.162 * [taylor]: Taking taylor expansion of x in x
0.162 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.162 * [taylor]: Taking taylor expansion of y in x
0.162 * [taylor]: Taking taylor expansion of (+ x (pow y 2)) in x
0.162 * [taylor]: Taking taylor expansion of x in x
0.162 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.162 * [taylor]: Taking taylor expansion of y in x
0.162 * [taylor]: Taking taylor expansion of (/ (- (pow x 2) (pow y 4)) (+ x (pow y 2))) in x
0.162 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 4)) in x
0.162 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.162 * [taylor]: Taking taylor expansion of x in x
0.162 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.162 * [taylor]: Taking taylor expansion of y in x
0.162 * [taylor]: Taking taylor expansion of (+ x (pow y 2)) in x
0.162 * [taylor]: Taking taylor expansion of x in x
0.162 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.162 * [taylor]: Taking taylor expansion of y in x
0.163 * [taylor]: Taking taylor expansion of (* -1 (pow y 2)) in y
0.163 * [taylor]: Taking taylor expansion of -1 in y
0.163 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.163 * [taylor]: Taking taylor expansion of y in y
0.163 * [taylor]: Taking taylor expansion of 1 in y
0.163 * [taylor]: Taking taylor expansion of 0 in y
0.164 * [taylor]: Taking taylor expansion of 0 in y
0.165 * [taylor]: Taking taylor expansion of 0 in y
0.165 * [approximate]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) (+ (/ 1 (pow y 2)) (/ 1 x))) in (x y) around 0
0.165 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) (+ (/ 1 (pow y 2)) (/ 1 x))) in y
0.165 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) in y
0.165 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.165 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.165 * [taylor]: Taking taylor expansion of x in y
0.165 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
0.165 * [taylor]: Taking taylor expansion of (pow y 4) in y
0.165 * [taylor]: Taking taylor expansion of y in y
0.165 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow y 2)) (/ 1 x)) in y
0.165 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.165 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.165 * [taylor]: Taking taylor expansion of y in y
0.165 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.165 * [taylor]: Taking taylor expansion of x in y
0.165 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) (+ (/ 1 (pow y 2)) (/ 1 x))) in x
0.165 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) in x
0.165 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.165 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.165 * [taylor]: Taking taylor expansion of x in x
0.165 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
0.166 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.166 * [taylor]: Taking taylor expansion of y in x
0.166 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow y 2)) (/ 1 x)) in x
0.166 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.166 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.166 * [taylor]: Taking taylor expansion of y in x
0.166 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.166 * [taylor]: Taking taylor expansion of x in x
0.166 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) (+ (/ 1 (pow y 2)) (/ 1 x))) in x
0.166 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) in x
0.166 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.166 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.166 * [taylor]: Taking taylor expansion of x in x
0.166 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
0.166 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.166 * [taylor]: Taking taylor expansion of y in x
0.166 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow y 2)) (/ 1 x)) in x
0.166 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.166 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.166 * [taylor]: Taking taylor expansion of y in x
0.166 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.166 * [taylor]: Taking taylor expansion of x in x
0.166 * [taylor]: Taking taylor expansion of 1 in y
0.167 * [taylor]: Taking taylor expansion of (neg (/ 1 (pow y 2))) in y
0.167 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.167 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.167 * [taylor]: Taking taylor expansion of y in y
0.167 * [taylor]: Taking taylor expansion of 0 in y
0.168 * [taylor]: Taking taylor expansion of 0 in y
0.169 * [taylor]: Taking taylor expansion of 0 in y
0.170 * [taylor]: Taking taylor expansion of 0 in y
0.171 * [approximate]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) (- (/ 1 (pow y 2)) (/ 1 x))) in (x y) around 0
0.171 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) (- (/ 1 (pow y 2)) (/ 1 x))) in y
0.171 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) in y
0.171 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.171 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.171 * [taylor]: Taking taylor expansion of x in y
0.171 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
0.171 * [taylor]: Taking taylor expansion of (pow y 4) in y
0.171 * [taylor]: Taking taylor expansion of y in y
0.171 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2)) (/ 1 x)) in y
0.171 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.171 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.171 * [taylor]: Taking taylor expansion of y in y
0.171 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.171 * [taylor]: Taking taylor expansion of x in y
0.171 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) (- (/ 1 (pow y 2)) (/ 1 x))) in x
0.171 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) in x
0.171 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.171 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.171 * [taylor]: Taking taylor expansion of x in x
0.171 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
0.171 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.171 * [taylor]: Taking taylor expansion of y in x
0.171 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2)) (/ 1 x)) in x
0.171 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.171 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.171 * [taylor]: Taking taylor expansion of y in x
0.172 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.172 * [taylor]: Taking taylor expansion of x in x
0.172 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) (- (/ 1 (pow y 2)) (/ 1 x))) in x
0.172 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) in x
0.172 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.172 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.172 * [taylor]: Taking taylor expansion of x in x
0.172 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
0.172 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.172 * [taylor]: Taking taylor expansion of y in x
0.172 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2)) (/ 1 x)) in x
0.172 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.172 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.172 * [taylor]: Taking taylor expansion of y in x
0.172 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.172 * [taylor]: Taking taylor expansion of x in x
0.172 * [taylor]: Taking taylor expansion of -1 in y
0.172 * [taylor]: Taking taylor expansion of (neg (/ 1 (pow y 2))) in y
0.172 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.173 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.173 * [taylor]: Taking taylor expansion of y in y
0.173 * [taylor]: Taking taylor expansion of 0 in y
0.174 * [taylor]: Taking taylor expansion of 0 in y
0.175 * [taylor]: Taking taylor expansion of 0 in y
0.176 * [taylor]: Taking taylor expansion of 0 in y
0.177 * * * * [progress]: [ 2 / 3 ] generating series at (2 1)
0.177 * [approximate]: Taking taylor expansion of (- (pow x 2) (pow y 4)) in (x y) around 0
0.177 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 4)) in y
0.177 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.177 * [taylor]: Taking taylor expansion of x in y
0.177 * [taylor]: Taking taylor expansion of (pow y 4) in y
0.177 * [taylor]: Taking taylor expansion of y in y
0.177 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 4)) in x
0.177 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.177 * [taylor]: Taking taylor expansion of x in x
0.177 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.177 * [taylor]: Taking taylor expansion of y in x
0.177 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 4)) in x
0.177 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.177 * [taylor]: Taking taylor expansion of x in x
0.177 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.177 * [taylor]: Taking taylor expansion of y in x
0.177 * [taylor]: Taking taylor expansion of (neg (pow y 4)) in y
0.177 * [taylor]: Taking taylor expansion of (pow y 4) in y
0.177 * [taylor]: Taking taylor expansion of y in y
0.177 * [taylor]: Taking taylor expansion of 0 in y
0.178 * [taylor]: Taking taylor expansion of 1 in y
0.178 * [taylor]: Taking taylor expansion of 0 in y
0.178 * [taylor]: Taking taylor expansion of 0 in y
0.178 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) in (x y) around 0
0.178 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) in y
0.178 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.178 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.178 * [taylor]: Taking taylor expansion of x in y
0.178 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
0.178 * [taylor]: Taking taylor expansion of (pow y 4) in y
0.178 * [taylor]: Taking taylor expansion of y in y
0.179 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) in x
0.179 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.179 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.179 * [taylor]: Taking taylor expansion of x in x
0.179 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
0.179 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.179 * [taylor]: Taking taylor expansion of y in x
0.179 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) in x
0.179 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.179 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.179 * [taylor]: Taking taylor expansion of x in x
0.179 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
0.179 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.179 * [taylor]: Taking taylor expansion of y in x
0.179 * [taylor]: Taking taylor expansion of 1 in y
0.179 * [taylor]: Taking taylor expansion of 0 in y
0.179 * [taylor]: Taking taylor expansion of (neg (/ 1 (pow y 4))) in y
0.179 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
0.179 * [taylor]: Taking taylor expansion of (pow y 4) in y
0.179 * [taylor]: Taking taylor expansion of y in y
0.180 * [taylor]: Taking taylor expansion of 0 in y
0.180 * [taylor]: Taking taylor expansion of 0 in y
0.183 * [taylor]: Taking taylor expansion of 0 in y
0.184 * [taylor]: Taking taylor expansion of 0 in y
0.184 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) in (x y) around 0
0.184 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) in y
0.184 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.184 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.184 * [taylor]: Taking taylor expansion of x in y
0.184 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
0.184 * [taylor]: Taking taylor expansion of (pow y 4) in y
0.184 * [taylor]: Taking taylor expansion of y in y
0.185 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) in x
0.185 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.185 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.185 * [taylor]: Taking taylor expansion of x in x
0.185 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
0.185 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.185 * [taylor]: Taking taylor expansion of y in x
0.185 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 4))) in x
0.185 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.185 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.185 * [taylor]: Taking taylor expansion of x in x
0.185 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
0.185 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.185 * [taylor]: Taking taylor expansion of y in x
0.185 * [taylor]: Taking taylor expansion of 1 in y
0.185 * [taylor]: Taking taylor expansion of 0 in y
0.185 * [taylor]: Taking taylor expansion of (neg (/ 1 (pow y 4))) in y
0.185 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
0.185 * [taylor]: Taking taylor expansion of (pow y 4) in y
0.185 * [taylor]: Taking taylor expansion of y in y
0.186 * [taylor]: Taking taylor expansion of 0 in y
0.186 * [taylor]: Taking taylor expansion of 0 in y
0.187 * [taylor]: Taking taylor expansion of 0 in y
0.188 * [taylor]: Taking taylor expansion of 0 in y
0.188 * * * * [progress]: [ 3 / 3 ] generating series at (2 2)
0.188 * [approximate]: Taking taylor expansion of (+ x (pow y 2)) in (x y) around 0
0.188 * [taylor]: Taking taylor expansion of (+ x (pow y 2)) in y
0.188 * [taylor]: Taking taylor expansion of x in y
0.188 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.188 * [taylor]: Taking taylor expansion of y in y
0.188 * [taylor]: Taking taylor expansion of (+ x (pow y 2)) in x
0.188 * [taylor]: Taking taylor expansion of x in x
0.188 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.188 * [taylor]: Taking taylor expansion of y in x
0.188 * [taylor]: Taking taylor expansion of (+ x (pow y 2)) in x
0.188 * [taylor]: Taking taylor expansion of x in x
0.188 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.188 * [taylor]: Taking taylor expansion of y in x
0.189 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.189 * [taylor]: Taking taylor expansion of y in y
0.189 * [taylor]: Taking taylor expansion of 1 in y
0.189 * [taylor]: Taking taylor expansion of 0 in y
0.189 * [taylor]: Taking taylor expansion of 0 in y
0.189 * [taylor]: Taking taylor expansion of 0 in y
0.189 * [approximate]: Taking taylor expansion of (+ (/ 1 (pow y 2)) (/ 1 x)) in (x y) around 0
0.189 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow y 2)) (/ 1 x)) in y
0.189 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.189 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.189 * [taylor]: Taking taylor expansion of y in y
0.189 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.189 * [taylor]: Taking taylor expansion of x in y
0.189 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow y 2)) (/ 1 x)) in x
0.189 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.189 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.189 * [taylor]: Taking taylor expansion of y in x
0.189 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.189 * [taylor]: Taking taylor expansion of x in x
0.189 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow y 2)) (/ 1 x)) in x
0.189 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.189 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.189 * [taylor]: Taking taylor expansion of y in x
0.190 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.190 * [taylor]: Taking taylor expansion of x in x
0.190 * [taylor]: Taking taylor expansion of 1 in y
0.190 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.190 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.190 * [taylor]: Taking taylor expansion of y in y
0.190 * [taylor]: Taking taylor expansion of 0 in y
0.190 * [taylor]: Taking taylor expansion of 0 in y
0.191 * [taylor]: Taking taylor expansion of 0 in y
0.191 * [taylor]: Taking taylor expansion of 0 in y
0.191 * [approximate]: Taking taylor expansion of (- (/ 1 (pow y 2)) (/ 1 x)) in (x y) around 0
0.192 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2)) (/ 1 x)) in y
0.192 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.192 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.192 * [taylor]: Taking taylor expansion of y in y
0.192 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.192 * [taylor]: Taking taylor expansion of x in y
0.192 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2)) (/ 1 x)) in x
0.192 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.192 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.192 * [taylor]: Taking taylor expansion of y in x
0.192 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.192 * [taylor]: Taking taylor expansion of x in x
0.192 * [taylor]: Taking taylor expansion of (- (/ 1 (pow y 2)) (/ 1 x)) in x
0.192 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.192 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.192 * [taylor]: Taking taylor expansion of y in x
0.192 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.192 * [taylor]: Taking taylor expansion of x in x
0.192 * [taylor]: Taking taylor expansion of (neg 1) in y
0.192 * [taylor]: Taking taylor expansion of 1 in y
0.192 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.192 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.192 * [taylor]: Taking taylor expansion of y in y
0.192 * [taylor]: Taking taylor expansion of 0 in y
0.193 * [taylor]: Taking taylor expansion of 0 in y
0.193 * [taylor]: Taking taylor expansion of 0 in y
0.194 * [taylor]: Taking taylor expansion of 0 in y
0.194 * * * [progress]: simplifying candidates
0.195 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (log (- (* x x) (pow y 4))) (log (+ x (* y y))))
  (log (/ (- (* x x) (pow y 4)) (+ x (* y y))))
  (exp (/ (- (* x x) (pow y 4)) (+ x (* y y))))
  (/ (* (* (- (* x x) (pow y 4)) (- (* x x) (pow y 4))) (- (* x x) (pow y 4))) (* (* (+ x (* y y)) (+ x (* y y))) (+ x (* y y))))
  (* (cbrt (/ (- (* x x) (pow y 4)) (+ x (* y y)))) (cbrt (/ (- (* x x) (pow y 4)) (+ x (* y y)))))
  (cbrt (/ (- (* x x) (pow y 4)) (+ x (* y y))))
  (* (* (/ (- (* x x) (pow y 4)) (+ x (* y y))) (/ (- (* x x) (pow y 4)) (+ x (* y y)))) (/ (- (* x x) (pow y 4)) (+ x (* y y))))
  (sqrt (/ (- (* x x) (pow y 4)) (+ x (* y y))))
  (sqrt (/ (- (* x x) (pow y 4)) (+ x (* y y))))
  (neg (- (* x x) (pow y 4)))
  (neg (+ x (* y y)))
  (/ (* x x) (+ x (* y y)))
  (/ (pow y 4) (+ x (* y y)))
  (/ (* (cbrt (- (* x x) (pow y 4))) (cbrt (- (* x x) (pow y 4)))) (* (cbrt (+ x (* y y))) (cbrt (+ x (* y y)))))
  (/ (cbrt (- (* x x) (pow y 4))) (cbrt (+ x (* y y))))
  (/ (* (cbrt (- (* x x) (pow y 4))) (cbrt (- (* x x) (pow y 4)))) (sqrt (+ x (* y y))))
  (/ (cbrt (- (* x x) (pow y 4))) (sqrt (+ x (* y y))))
  (/ (* (cbrt (- (* x x) (pow y 4))) (cbrt (- (* x x) (pow y 4)))) 1)
  (/ (cbrt (- (* x x) (pow y 4))) (+ x (* y y)))
  (/ (sqrt (- (* x x) (pow y 4))) (* (cbrt (+ x (* y y))) (cbrt (+ x (* y y)))))
  (/ (sqrt (- (* x x) (pow y 4))) (cbrt (+ x (* y y))))
  (/ (sqrt (- (* x x) (pow y 4))) (sqrt (+ x (* y y))))
  (/ (sqrt (- (* x x) (pow y 4))) (sqrt (+ x (* y y))))
  (/ (sqrt (- (* x x) (pow y 4))) 1)
  (/ (sqrt (- (* x x) (pow y 4))) (+ x (* y y)))
  (/ 1 (* (cbrt (+ x (* y y))) (cbrt (+ x (* y y)))))
  (/ (- (* x x) (pow y 4)) (cbrt (+ x (* y y))))
  (/ 1 (sqrt (+ x (* y y))))
  (/ (- (* x x) (pow y 4)) (sqrt (+ x (* y y))))
  (/ 1 1)
  (/ (- (* x x) (pow y 4)) (+ x (* y y)))
  (/ (+ x (pow (sqrt y) 4)) (* (cbrt (+ x (* y y))) (cbrt (+ x (* y y)))))
  (/ (- x (pow (sqrt y) 4)) (cbrt (+ x (* y y))))
  (/ (+ x (pow (sqrt y) 4)) (sqrt (+ x (* y y))))
  (/ (- x (pow (sqrt y) 4)) (sqrt (+ x (* y y))))
  (/ (+ x (pow (sqrt y) 4)) 1)
  (/ (- x (pow (sqrt y) 4)) (+ x (* y y)))
  (/ (+ x (sqrt (pow y 4))) (* (cbrt (+ x (* y y))) (cbrt (+ x (* y y)))))
  (/ (- x (sqrt (pow y 4))) (cbrt (+ x (* y y))))
  (/ (+ x (sqrt (pow y 4))) (sqrt (+ x (* y y))))
  (/ (- x (sqrt (pow y 4))) (sqrt (+ x (* y y))))
  (/ (+ x (sqrt (pow y 4))) 1)
  (/ (- x (sqrt (pow y 4))) (+ x (* y y)))
  (/ (+ x (pow y (/ 4 2))) (* (cbrt (+ x (* y y))) (cbrt (+ x (* y y)))))
  (/ (- x (pow y (/ 4 2))) (cbrt (+ x (* y y))))
  (/ (+ x (pow y (/ 4 2))) (sqrt (+ x (* y y))))
  (/ (- x (pow y (/ 4 2))) (sqrt (+ x (* y y))))
  (/ (+ x (pow y (/ 4 2))) 1)
  (/ (- x (pow y (/ 4 2))) (+ x (* y y)))
  (/ 1 (+ x (* y y)))
  (/ (+ x (* y y)) (- (* x x) (pow y 4)))
  (/ (- (* x x) (pow y 4)) (* (cbrt (+ x (* y y))) (cbrt (+ x (* y y)))))
  (/ (- (* x x) (pow y 4)) (sqrt (+ x (* y y))))
  (/ (- (* x x) (pow y 4)) 1)
  (/ (+ x (* y y)) (cbrt (- (* x x) (pow y 4))))
  (/ (+ x (* y y)) (sqrt (- (* x x) (pow y 4))))
  (/ (+ x (* y y)) (- (* x x) (pow y 4)))
  (/ (+ x (* y y)) (- x (pow (sqrt y) 4)))
  (/ (+ x (* y y)) (- x (sqrt (pow y 4))))
  (/ (+ x (* y y)) (- x (pow y (/ 4 2))))
  (/ (- (* x x) (pow y 4)) (+ (pow x 3) (pow (* y y) 3)))
  (/ (- (* x x) (pow y 4)) (- (* x x) (* (* y y) (* y y))))
  (* (+ x (* y y)) (+ (* (* x x) (* x x)) (+ (* (pow y 4) (pow y 4)) (* (* x x) (pow y 4)))))
  (* (+ x (* y y)) (+ (* x x) (pow y 4)))
  (/ (exp (* x x)) (exp (pow y 4)))
  (log (- (* x x) (pow y 4)))
  (exp (- (* x x) (pow y 4)))
  (* (cbrt (- (* x x) (pow y 4))) (cbrt (- (* x x) (pow y 4))))
  (cbrt (- (* x x) (pow y 4)))
  (* (* (- (* x x) (pow y 4)) (- (* x x) (pow y 4))) (- (* x x) (pow y 4)))
  (sqrt (- (* x x) (pow y 4)))
  (sqrt (- (* x x) (pow y 4)))
  (- (pow (* x x) 3) (pow (pow y 4) 3))
  (+ (* (* x x) (* x x)) (+ (* (pow y 4) (pow y 4)) (* (* x x) (pow y 4))))
  (neg (pow y 4))
  (- (* (* x x) (* x x)) (* (pow y 4) (pow y 4)))
  (+ (* x x) (pow y 4))
  (+ x (pow (sqrt y) 4))
  (- x (pow (sqrt y) 4))
  (+ x (sqrt (pow y 4)))
  (- x (sqrt (pow y 4)))
  (+ x (pow y (/ 4 2)))
  (- x (pow y (/ 4 2)))
  (* (exp x) (exp (* y y)))
  (log (+ x (* y y)))
  (exp (+ x (* y y)))
  (* (cbrt (+ x (* y y))) (cbrt (+ x (* y y))))
  (cbrt (+ x (* y y)))
  (* (* (+ x (* y y)) (+ x (* y y))) (+ x (* y y)))
  (sqrt (+ x (* y y)))
  (sqrt (+ x (* y y)))
  (+ (pow x 3) (pow (* y y) 3))
  (+ (* x x) (- (* (* y y) (* y y)) (* x (* y y))))
  (- (* x x) (* (* y y) (* y y)))
  (- x (* y y))
  (- x (pow y 2))
  (- x (pow y 2))
  (- x (pow y 2))
  (pow x 2)
  (- (pow x 2) (pow y 4))
  (- (pow x 2) (pow y 4))
  (+ x (pow y 2))
  (+ x (pow y 2))
  (+ x (pow y 2))
0.239 * * [simplify]: iteration  0 :  4934  enodes  (cost  1029 )
0.239 * * [simplify]: iteration  1 :  4934  enodes  (cost  1029 )
0.243 * [simplify]: Simplified to:
   (log (- x (* y y)))
  (log (- x (* y y)))
  (exp (- x (* y y)))
  (pow (- x (* y y)) 3)
  (* (cbrt (- x (* y y))) (cbrt (- x (* y y))))
  (cbrt (- x (* y y)))
  (pow (- x (* y y)) 3)
  (sqrt (- x (* y y)))
  (sqrt (- x (* y y)))
  (- (pow y 4) (* x x))
  (- (* y (neg y)) x)
  (* x (/ x (+ x (* y y))))
  (/ (pow y 4) (+ x (* y y)))
  (* (cbrt (- (* x x) (pow y 4))) (/ (cbrt (- (* x x) (pow y 4))) (* (cbrt (+ x (* y y))) (cbrt (+ x (* y y))))))
  (/ (cbrt (- (* x x) (pow y 4))) (cbrt (+ x (* y y))))
  (* (cbrt (- (* x x) (pow y 4))) (/ (cbrt (- (* x x) (pow y 4))) (sqrt (+ x (* y y)))))
  (/ (cbrt (- (* x x) (pow y 4))) (sqrt (+ x (* y y))))
  (* (cbrt (- (* x x) (pow y 4))) (cbrt (- (* x x) (pow y 4))))
  (/ (cbrt (- (* x x) (pow y 4))) (+ x (* y y)))
  (/ (sqrt (- (* x x) (pow y 4))) (* (cbrt (+ x (* y y))) (cbrt (+ x (* y y)))))
  (/ (sqrt (- (* x x) (pow y 4))) (cbrt (+ x (* y y))))
  (/ (sqrt (- (* x x) (pow y 4))) (sqrt (+ x (* y y))))
  (/ (sqrt (- (* x x) (pow y 4))) (sqrt (+ x (* y y))))
  (sqrt (- (* x x) (pow y 4)))
  (/ (sqrt (- (* x x) (pow y 4))) (+ x (* y y)))
  (/ 1 (* (cbrt (+ x (* y y))) (cbrt (+ x (* y y)))))
  (/ (- (* x x) (pow y 4)) (cbrt (+ x (* y y))))
  (/ 1 (sqrt (+ x (* y y))))
  (/ (- (* x x) (pow y 4)) (sqrt (+ x (* y y))))
  1
  (- x (* y y))
  (/ (+ x (* y y)) (* (cbrt (+ x (* y y))) (cbrt (+ x (* y y)))))
  (/ (- x (* y y)) (cbrt (+ x (* y y))))
  (/ (+ x (* y y)) (sqrt (+ x (* y y))))
  (/ (- x (* y y)) (sqrt (+ x (* y y))))
  (+ x (* y y))
  (/ (- x (* y y)) (+ x (* y y)))
  (/ (+ x (sqrt (pow y 4))) (* (cbrt (+ x (* y y))) (cbrt (+ x (* y y)))))
  (/ (- x (sqrt (pow y 4))) (cbrt (+ x (* y y))))
  (/ (+ x (sqrt (pow y 4))) (sqrt (+ x (* y y))))
  (/ (- x (sqrt (pow y 4))) (sqrt (+ x (* y y))))
  (+ x (sqrt (pow y 4)))
  (/ (- x (sqrt (pow y 4))) (+ x (* y y)))
  (/ (+ x (* y y)) (* (cbrt (+ x (* y y))) (cbrt (+ x (* y y)))))
  (/ (- x (* y y)) (cbrt (+ x (* y y))))
  (/ (+ x (* y y)) (sqrt (+ x (* y y))))
  (/ (- x (* y y)) (sqrt (+ x (* y y))))
  (+ x (* y y))
  (/ (- x (* y y)) (+ x (* y y)))
  (/ 1 (+ x (* y y)))
  (/ 1 (- x (* y y)))
  (/ (- (* x x) (pow y 4)) (* (cbrt (+ x (* y y))) (cbrt (+ x (* y y)))))
  (/ (- (* x x) (pow y 4)) (sqrt (+ x (* y y))))
  (- (* x x) (pow y 4))
  (/ (+ x (* y y)) (cbrt (- (* x x) (pow y 4))))
  (/ (+ x (* y y)) (sqrt (- (* x x) (pow y 4))))
  (/ 1 (- x (* y y)))
  (/ (+ x (* y y)) (- x (* y y)))
  (/ (+ x (* y y)) (- x (sqrt (pow y 4))))
  (/ (+ x (* y y)) (- x (* y y)))
  (/ (- (* x x) (pow y 4)) (+ (pow x 3) (pow y 6)))
  1
  (* (+ x (* y y)) (+ (pow x 4) (+ (pow y 8) (* x (* x (pow y 4))))))
  (* (+ x (* y y)) (+ (* x x) (pow y 4)))
  (exp (- (* x x) (pow y 4)))
  (log (- (* x x) (pow y 4)))
  (exp (- (* x x) (pow y 4)))
  (* (cbrt (- (* x x) (pow y 4))) (cbrt (- (* x x) (pow y 4))))
  (cbrt (- (* x x) (pow y 4)))
  (pow (- (* x x) (pow y 4)) 3)
  (sqrt (- (* x x) (pow y 4)))
  (sqrt (- (* x x) (pow y 4)))
  (- (pow x 6) (pow y 12))
  (+ (pow x 4) (+ (pow y 8) (* x (* x (pow y 4)))))
  (neg (pow y 4))
  (- (pow x 4) (pow y 8))
  (+ (* x x) (pow y 4))
  (+ x (* y y))
  (- x (* y y))
  (+ x (sqrt (pow y 4)))
  (- x (sqrt (pow y 4)))
  (+ x (* y y))
  (- x (* y y))
  (exp (+ x (* y y)))
  (log (+ x (* y y)))
  (exp (+ x (* y y)))
  (* (cbrt (+ x (* y y))) (cbrt (+ x (* y y))))
  (cbrt (+ x (* y y)))
  (pow (+ x (* y y)) 3)
  (sqrt (+ x (* y y)))
  (sqrt (+ x (* y y)))
  (+ (pow x 3) (pow y 6))
  (+ (pow y 4) (* x (- x (* y y))))
  (- (* x x) (pow y 4))
  (- x (* y y))
  (- x (* y y))
  (- x (* y y))
  (- x (* y y))
  (* x x)
  (- (* x x) (pow y 4))
  (- (* x x) (pow y 4))
  (+ x (* y y))
  (+ x (* y y))
  (+ x (* y y))
0.243 * * * [progress]: adding candidates to table
0.330 * [progress]: [Phase 3 of 3] Extracting.
0.330 * * [regime]: Finding splitpoints for: (#<alt (λ (x y) (/ (- (* x x) (pow y 4)) (+ x (* y y))))> #<alt (λ (x y) (- x (* y y)))>)
0.330 * * * [regime-changes]: Trying 4 branch expressions: ((* y y) (- x (* y y)) y x)
0.330 * * * * [regimes]: Trying to branch on (* y y) from (#<alt (λ (x y) (/ (- (* x x) (pow y 4)) (+ x (* y y))))> #<alt (λ (x y) (- x (* y y)))>)
0.360 * * * * [regimes]: Trying to branch on (- x (* y y)) from (#<alt (λ (x y) (/ (- (* x x) (pow y 4)) (+ x (* y y))))> #<alt (λ (x y) (- x (* y y)))>)
0.390 * * * * [regimes]: Trying to branch on y from (#<alt (λ (x y) (/ (- (* x x) (pow y 4)) (+ x (* y y))))> #<alt (λ (x y) (- x (* y y)))>)
0.420 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x y) (/ (- (* x x) (pow y 4)) (+ x (* y y))))> #<alt (λ (x y) (- x (* y y)))>)
0.451 * * * [regime]: Found split indices: #<option (#s(si 1 255))>
0.451 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- x (* y y))
0.452 * * [simplify]: iteration  0 :  22  enodes  (cost  5 )
0.452 * * [simplify]: iteration  1 :  22  enodes  (cost  5 )
0.452 * [simplify]: Simplified to:
   (- x (* y y))
0.938 * [regime-testing]: End program error score: 0.005625703212901613