9.007 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.080 * * * [progress]: [2/2] Setting up program.
0.082 * [progress]: [Phase 2 of 3] Improving.
0.083 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (+ x y) (- x y))
0.085 * * [simplify]: iteration  0 :  13  enodes  (cost  7 )
0.085 * * [simplify]: iteration  1 :  13  enodes  (cost  7 )
0.085 * [simplify]: Simplified to:
   (* (+ x y) (- x y))
0.085 * * [progress]: iteration 1 / 4
0.085 * * * [progress]: picking best candidate
0.087 * * * * [pick]: Picked  #<alt (λ (x y) (* (+ x y) (- x y)))>
0.087 * * * [progress]: localizing error
0.091 * * * [progress]: generating rewritten candidates
0.091 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.100 * * * [progress]: generating series expansions
0.100 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.101 * [approximate]: Taking taylor expansion of (* (+ x y) (- x y)) in (x y) around 0
0.101 * [taylor]: Taking taylor expansion of (* (+ x y) (- x y)) in y
0.101 * [taylor]: Taking taylor expansion of (+ x y) in y
0.101 * [taylor]: Taking taylor expansion of x in y
0.101 * [taylor]: Taking taylor expansion of y in y
0.101 * [taylor]: Taking taylor expansion of (- x y) in y
0.101 * [taylor]: Taking taylor expansion of x in y
0.101 * [taylor]: Taking taylor expansion of y in y
0.101 * [taylor]: Taking taylor expansion of (* (+ x y) (- x y)) in x
0.101 * [taylor]: Taking taylor expansion of (+ x y) in x
0.101 * [taylor]: Taking taylor expansion of x in x
0.101 * [taylor]: Taking taylor expansion of y in x
0.101 * [taylor]: Taking taylor expansion of (- x y) in x
0.101 * [taylor]: Taking taylor expansion of x in x
0.101 * [taylor]: Taking taylor expansion of y in x
0.101 * [taylor]: Taking taylor expansion of (* (+ x y) (- x y)) in x
0.101 * [taylor]: Taking taylor expansion of (+ x y) in x
0.101 * [taylor]: Taking taylor expansion of x in x
0.101 * [taylor]: Taking taylor expansion of y in x
0.101 * [taylor]: Taking taylor expansion of (- x y) in x
0.101 * [taylor]: Taking taylor expansion of x in x
0.101 * [taylor]: Taking taylor expansion of y in x
0.101 * [taylor]: Taking taylor expansion of (* -1 (pow y 2)) in y
0.101 * [taylor]: Taking taylor expansion of -1 in y
0.101 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.101 * [taylor]: Taking taylor expansion of y in y
0.101 * [taylor]: Taking taylor expansion of 0 in y
0.101 * [taylor]: Taking taylor expansion of 1 in y
0.101 * [taylor]: Taking taylor expansion of 0 in y
0.102 * [taylor]: Taking taylor expansion of 0 in y
0.102 * [approximate]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) in (x y) around 0
0.102 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) in y
0.102 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in y
0.102 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.102 * [taylor]: Taking taylor expansion of x in y
0.102 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.102 * [taylor]: Taking taylor expansion of y in y
0.102 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in y
0.102 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.102 * [taylor]: Taking taylor expansion of y in y
0.102 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.102 * [taylor]: Taking taylor expansion of x in y
0.102 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) in x
0.102 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.102 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.102 * [taylor]: Taking taylor expansion of x in x
0.102 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.102 * [taylor]: Taking taylor expansion of y in x
0.102 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.102 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.102 * [taylor]: Taking taylor expansion of y in x
0.102 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.102 * [taylor]: Taking taylor expansion of x in x
0.102 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (+ (/ 1 y) (/ 1 x))) in x
0.102 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.102 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.102 * [taylor]: Taking taylor expansion of x in x
0.103 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.103 * [taylor]: Taking taylor expansion of y in x
0.103 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.103 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.103 * [taylor]: Taking taylor expansion of y in x
0.103 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.103 * [taylor]: Taking taylor expansion of x in x
0.103 * [taylor]: Taking taylor expansion of 1 in y
0.103 * [taylor]: Taking taylor expansion of 0 in y
0.103 * [taylor]: Taking taylor expansion of (neg (/ 1 (pow y 2))) in y
0.103 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.103 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.103 * [taylor]: Taking taylor expansion of y in y
0.104 * [taylor]: Taking taylor expansion of 0 in y
0.104 * [taylor]: Taking taylor expansion of 0 in y
0.105 * [approximate]: Taking taylor expansion of (* -1 (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x)))) in (x y) around 0
0.105 * [taylor]: Taking taylor expansion of (* -1 (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x)))) in y
0.105 * [taylor]: Taking taylor expansion of -1 in y
0.105 * [taylor]: Taking taylor expansion of (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) in y
0.105 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in y
0.105 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.105 * [taylor]: Taking taylor expansion of y in y
0.105 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.105 * [taylor]: Taking taylor expansion of x in y
0.105 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in y
0.105 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.105 * [taylor]: Taking taylor expansion of y in y
0.105 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.105 * [taylor]: Taking taylor expansion of x in y
0.105 * [taylor]: Taking taylor expansion of (* -1 (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x)))) in x
0.105 * [taylor]: Taking taylor expansion of -1 in x
0.105 * [taylor]: Taking taylor expansion of (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) in x
0.105 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.105 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.105 * [taylor]: Taking taylor expansion of y in x
0.105 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.105 * [taylor]: Taking taylor expansion of x in x
0.105 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.105 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.105 * [taylor]: Taking taylor expansion of y in x
0.105 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.105 * [taylor]: Taking taylor expansion of x in x
0.105 * [taylor]: Taking taylor expansion of (* -1 (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x)))) in x
0.105 * [taylor]: Taking taylor expansion of -1 in x
0.105 * [taylor]: Taking taylor expansion of (* (+ (/ 1 y) (/ 1 x)) (- (/ 1 y) (/ 1 x))) in x
0.105 * [taylor]: Taking taylor expansion of (+ (/ 1 y) (/ 1 x)) in x
0.105 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.105 * [taylor]: Taking taylor expansion of y in x
0.105 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.105 * [taylor]: Taking taylor expansion of x in x
0.105 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.105 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.105 * [taylor]: Taking taylor expansion of y in x
0.105 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.105 * [taylor]: Taking taylor expansion of x in x
0.105 * [taylor]: Taking taylor expansion of 1 in y
0.106 * [taylor]: Taking taylor expansion of 0 in y
0.106 * [taylor]: Taking taylor expansion of (neg (/ 1 (pow y 2))) in y
0.106 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.106 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.106 * [taylor]: Taking taylor expansion of y in y
0.107 * [taylor]: Taking taylor expansion of 0 in y
0.107 * [taylor]: Taking taylor expansion of 0 in y
0.107 * * * [progress]: simplifying candidates
0.108 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (+ 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)))
  (* (+ (pow x 3) (pow y 3)) (- (pow x 3) (pow y 3)))
  (* (+ (* x x) (- (* y y) (* x y))) (+ (* x x) (+ (* y y) (* x y))))
  (* (+ (pow x 3) (pow y 3)) (- (* x x) (* y y)))
  (* (+ (* x x) (- (* y y) (* x y))) (+ x y))
  (* (- (* x x) (* y y)) (- (pow x 3) (pow y 3)))
  (* (- x y) (+ (* x x) (+ (* y y) (* x y))))
  (* (- (* x x) (* y y)) (- (* x x) (* y y)))
  (* (- x y) (+ x y))
  (* (sqrt (+ x y)) (sqrt (- x y)))
  (* (sqrt (+ x y)) (sqrt (- x y)))
  (* (+ x y) x)
  (* (+ x y) (neg y))
  (* x (+ x y))
  (* (neg 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)
  (* (cbrt (+ x y)) (- x y))
  (* (sqrt (+ x y)) (- x y))
  (* (+ x y) (- x y))
  (* (+ x y) (- x y))
  (* (+ x y) (- (pow x 3) (pow y 3)))
  (* (+ x y) (- (* x x) (* y y)))
  (* (+ (pow x 3) (pow y 3)) (- x y))
  (* (- (* x x) (* y y)) (- x y))
  (- (pow x 2) (pow y 2))
  (- (pow x 2) (pow y 2))
  (- (pow x 2) (pow y 2))
0.148 * * [simplify]: iteration  0 :  6080  enodes  (cost  371 )
0.150 * [simplify]: Simplified to:
   (- (* x x) (* y y))
  (log (- (* x x) (* y y)))
  (log (- (* x x) (* y y)))
  (pow (exp (+ x y)) (- x y))
  (pow (- (* x x) (* y y)) 3)
  (* (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 3) (pow y 3)) (- (pow x 3) (pow y 3)))
  (* (+ (* x x) (* y (- y x))) (+ (* x x) (* y (+ x y))))
  (* (+ x y) (* (- x y) (+ (pow x 3) (pow y 3))))
  (+ (pow x 3) (* y (- (* y y) 0)))
  (* (+ x y) (* (- x y) (- (pow x 3) (pow y 3))))
  (* (- x y) (+ (* x x) (* y (+ x y))))
  (* (+ x y) (* (+ x y) (* (- x y) (- x y))))
  (- (* x x) (* y y))
  (* (sqrt (+ x y)) (sqrt (- x y)))
  (* (sqrt (+ x y)) (sqrt (- x y)))
  (* x (+ x y))
  (* y (neg (+ x y)))
  (* x (+ x y))
  (* y (neg (+ x y)))
  (* (+ x y) (* (cbrt (- x y)) (cbrt (- x y))))
  (* (+ x y) (sqrt (- x y)))
  (+ x y)
  (* (+ x y) (+ (sqrt x) (sqrt y)))
  (+ x y)
  (* (- x y) (cbrt (+ x y)))
  (* (- x y) (sqrt (+ x y)))
  (- (* x x) (* y y))
  (- (* x x) (* y y))
  (* (+ x y) (- (pow x 3) (pow y 3)))
  (* (+ x y) (- (* x x) (* y y)))
  (* (- x y) (+ (pow x 3) (pow y 3)))
  (* (+ x y) (* (- x y) (- x y)))
  (- (* x x) (* y y))
  (- (* x x) (* y y))
  (- (* x x) (* y y))
0.150 * * * [progress]: adding candidates to table
0.355 * * [progress]: iteration 2 / 4
0.355 * * * [progress]: picking best candidate
0.357 * * * * [pick]: Picked  #<alt (λ (x y) (- (* x x) (* y y)))>
0.357 * * * [progress]: localizing error
0.361 * * * [progress]: generating rewritten candidates
0.361 * * * [progress]: generating series expansions
0.361 * * * [progress]: simplifying candidates
0.361 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.363 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.363 * [simplify]: Simplified to:
   
0.363 * * * [progress]: adding candidates to table
0.364 * [progress]: [Phase 3 of 3] Extracting.
0.366 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (* x x) (* y y))
0.366 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.366 * * [simplify]: iteration  1 :  5  enodes  (cost  7 )
0.366 * [simplify]: Simplified to:
   (- (* x x) (* y y))
0.879 * [regime-testing]: End program error score: 0.006976791464190225