1.937 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.025 * * * [progress]: [2/2] Setting up program.
0.027 * [progress]: [Phase 2 of 3] Improving.
0.027 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (* x x) (* y y))
0.121 * * [simplify]: iteration  0 :  6107  enodes  (cost  7 )
0.122 * [simplify]: Simplified to:
   (- (* x x) (* y y))
0.122 * * [progress]: iteration 1 / 4
0.122 * * * [progress]: picking best candidate
0.125 * * * * [pick]: Picked  #<alt (λ (x y) (- (* x x) (* y y)))>
0.125 * * * [progress]: localizing error
0.130 * * * [progress]: generating rewritten candidates
0.130 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.138 * * * [progress]: generating series expansions
0.138 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.138 * [approximate]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in (x y) around 0
0.138 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in y
0.138 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.138 * [taylor]: Taking taylor expansion of x in y
0.138 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.138 * [taylor]: Taking taylor expansion of y in y
0.138 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
0.138 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.138 * [taylor]: Taking taylor expansion of x in x
0.138 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.138 * [taylor]: Taking taylor expansion of y in x
0.138 * [taylor]: Taking taylor expansion of (- (pow x 2) (pow y 2)) in x
0.138 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.138 * [taylor]: Taking taylor expansion of x in x
0.138 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.138 * [taylor]: Taking taylor expansion of y in x
0.138 * [taylor]: Taking taylor expansion of (neg (pow y 2)) in y
0.138 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.138 * [taylor]: Taking taylor expansion of y in y
0.138 * [taylor]: Taking taylor expansion of 0 in y
0.139 * [taylor]: Taking taylor expansion of 1 in y
0.139 * [taylor]: Taking taylor expansion of 0 in y
0.139 * [taylor]: Taking taylor expansion of 0 in y
0.139 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
0.139 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
0.139 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.139 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.139 * [taylor]: Taking taylor expansion of x in y
0.139 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.139 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.139 * [taylor]: Taking taylor expansion of y in y
0.139 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
0.139 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.140 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.140 * [taylor]: Taking taylor expansion of x in x
0.140 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.140 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.140 * [taylor]: Taking taylor expansion of y in x
0.140 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
0.140 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.140 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.140 * [taylor]: Taking taylor expansion of x in x
0.140 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.140 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.140 * [taylor]: Taking taylor expansion of y in x
0.140 * [taylor]: Taking taylor expansion of 1 in y
0.140 * [taylor]: Taking taylor expansion of 0 in y
0.140 * [taylor]: Taking taylor expansion of (neg (/ 1 (pow y 2))) in y
0.140 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.140 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.140 * [taylor]: Taking taylor expansion of y in y
0.141 * [taylor]: Taking taylor expansion of 0 in y
0.141 * [taylor]: Taking taylor expansion of 0 in y
0.142 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in (x y) around 0
0.142 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in y
0.142 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.142 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.142 * [taylor]: Taking taylor expansion of x in y
0.142 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.142 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.142 * [taylor]: Taking taylor expansion of y in y
0.142 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
0.142 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.142 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.142 * [taylor]: Taking taylor expansion of x in x
0.142 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.142 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.142 * [taylor]: Taking taylor expansion of y in x
0.143 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 (pow y 2))) in x
0.143 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.143 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.143 * [taylor]: Taking taylor expansion of x in x
0.143 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.143 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.143 * [taylor]: Taking taylor expansion of y in x
0.143 * [taylor]: Taking taylor expansion of 1 in y
0.143 * [taylor]: Taking taylor expansion of 0 in y
0.143 * [taylor]: Taking taylor expansion of (neg (/ 1 (pow y 2))) in y
0.143 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.143 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.143 * [taylor]: Taking taylor expansion of y in y
0.144 * [taylor]: Taking taylor expansion of 0 in y
0.144 * [taylor]: Taking taylor expansion of 0 in y
0.144 * * * [progress]: simplifying candidates
0.145 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ (exp (* x x)) (exp (* y y)))
  (log (- (* x x) (* y y)))
  (exp (- (* x x) (* y y)))
  (* (cbrt (- (* x x) (* y y))) (cbrt (- (* x x) (* y y))))
  (cbrt (- (* x x) (* y y)))
  (* (* (- (* x x) (* y y)) (- (* x x) (* y y))) (- (* x x) (* y y)))
  (sqrt (- (* x x) (* y y)))
  (sqrt (- (* x x) (* y y)))
  (- (pow (* x x) 3) (pow (* y y) 3))
  (+ (* (* x x) (* x x)) (+ (* (* y y) (* y y)) (* (* x x) (* y y))))
  (neg (* y y))
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
  (+ (* x x) (* y y))
  (+ x y)
  (- x y)
  (neg (* y y))
  (- (pow x 2) (pow y 2))
  (- (pow x 2) (pow y 2))
  (- (pow x 2) (pow y 2))
0.163 * * [simplify]: iteration  0 :  5037  enodes  (cost  145 )
0.164 * [simplify]: Simplified to:
   (pow (exp (+ x y)) (- x y))
  (log (- (* x x) (* y y)))
  (pow (exp (+ x y)) (- x y))
  (* (cbrt (- (* x x) (* y y))) (cbrt (- (* x x) (* y y))))
  (cbrt (- (* x x) (* y y)))
  (pow (- (* x x) (* y y)) 3)
  (sqrt (- (* x x) (* y y)))
  (sqrt (- (* x x) (* y y)))
  (- (pow x 6) (pow y 6))
  (+ (pow x 4) (+ (pow y 4) (* x (* x (* y y)))))
  (* y (neg y))
  (- (pow x 4) (pow y 4))
  (+ (* x x) (* y y))
  (+ x y)
  (- x y)
  (* y (neg y))
  (- (* x x) (* y y))
  (- (* x x) (* y y))
  (- (* x x) (* y y))
0.164 * * * [progress]: adding candidates to table
0.182 * * [progress]: iteration 2 / 4
0.182 * * * [progress]: picking best candidate
0.184 * * * * [pick]: Picked  #<alt (λ (x y) (* (+ x y) (- x y)))>
0.184 * * * [progress]: localizing error
0.188 * * * [progress]: generating rewritten candidates
0.188 * * * [progress]: generating series expansions
0.188 * * * [progress]: simplifying candidates
0.189 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.190 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.190 * [simplify]: Simplified to:
   
0.191 * * * [progress]: adding candidates to table
0.191 * [progress]: [Phase 3 of 3] Extracting.
0.193 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (+ x y) (- x y))
0.194 * * [simplify]: iteration  0 :  7  enodes  (cost  7 )
0.194 * * [simplify]: iteration  1 :  7  enodes  (cost  7 )
0.194 * [simplify]: Simplified to:
   (* (+ x y) (- x y))
1.119 * [regime-testing]: End program error score: 0.0007500937617202151