4.412 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.181 * * * [progress]: [2/2] Setting up program.
0.191 * [progress]: [Phase 2 of 3] Improving.
0.191 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (pow x 4.0) (pow y 4.0))
0.193 * * [simplify]: iteration  0 :  14  enodes  (cost  3 )
0.194 * * [simplify]: iteration  1 :  29  enodes  (cost  3 )
0.195 * * [simplify]: iteration  2 :  68  enodes  (cost  3 )
0.197 * * [simplify]: iteration  3 :  204  enodes  (cost  3 )
0.202 * * [simplify]: iteration  4 :  776  enodes  (cost  3 )
0.221 * * [simplify]: iteration  5 :  3986  enodes  (cost  3 )
0.333 * * [simplify]: iteration  6 :  5002  enodes  (cost  3 )
0.334 * [simplify]: Simplified to:
   (- (pow x 4.0) (pow y 4.0))
0.334 * * [progress]: iteration 1 / 4
0.334 * * * [progress]: picking best candidate
0.337 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
0.337 * * * [progress]: localizing error
0.342 * * * [progress]: generating rewritten candidates
0.342 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.350 * * * [progress]: generating series expansions
0.350 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.350 * [approximate]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in (x y) around 0
0.350 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in y
0.350 * [taylor]: Taking taylor expansion of (pow x 4) in y
0.350 * [taylor]: Taking taylor expansion of x in y
0.351 * [taylor]: Taking taylor expansion of (pow y 4) in y
0.351 * [taylor]: Taking taylor expansion of y in y
0.351 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in x
0.351 * [taylor]: Taking taylor expansion of (pow x 4) in x
0.351 * [taylor]: Taking taylor expansion of x in x
0.351 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.351 * [taylor]: Taking taylor expansion of y in x
0.351 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 4)) in x
0.351 * [taylor]: Taking taylor expansion of (pow x 4) in x
0.351 * [taylor]: Taking taylor expansion of x in x
0.351 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.351 * [taylor]: Taking taylor expansion of y in x
0.351 * [taylor]: Taking taylor expansion of (neg (pow y 4)) in y
0.351 * [taylor]: Taking taylor expansion of (pow y 4) in y
0.351 * [taylor]: Taking taylor expansion of y in y
0.352 * [taylor]: Taking taylor expansion of 0 in y
0.352 * [taylor]: Taking taylor expansion of 0 in y
0.352 * [taylor]: Taking taylor expansion of 0 in y
0.352 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in (x y) around 0
0.352 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in y
0.352 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
0.352 * [taylor]: Taking taylor expansion of (pow x 4) in y
0.352 * [taylor]: Taking taylor expansion of x in y
0.352 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
0.352 * [taylor]: Taking taylor expansion of (pow y 4) in y
0.352 * [taylor]: Taking taylor expansion of y in y
0.352 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
0.353 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
0.353 * [taylor]: Taking taylor expansion of (pow x 4) in x
0.353 * [taylor]: Taking taylor expansion of x in x
0.353 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
0.353 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.353 * [taylor]: Taking taylor expansion of y in x
0.353 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
0.353 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
0.353 * [taylor]: Taking taylor expansion of (pow x 4) in x
0.353 * [taylor]: Taking taylor expansion of x in x
0.353 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
0.353 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.353 * [taylor]: Taking taylor expansion of y in x
0.353 * [taylor]: Taking taylor expansion of 1 in y
0.353 * [taylor]: Taking taylor expansion of 0 in y
0.353 * [taylor]: Taking taylor expansion of 0 in y
0.353 * [taylor]: Taking taylor expansion of 0 in y
0.354 * [taylor]: Taking taylor expansion of (neg (/ 1 (pow y 4))) in y
0.354 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
0.354 * [taylor]: Taking taylor expansion of (pow y 4) in y
0.354 * [taylor]: Taking taylor expansion of y in y
0.354 * [taylor]: Taking taylor expansion of 0 in y
0.355 * [taylor]: Taking taylor expansion of 0 in y
0.356 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in (x y) around 0
0.356 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in y
0.356 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
0.356 * [taylor]: Taking taylor expansion of (pow x 4) in y
0.356 * [taylor]: Taking taylor expansion of x in y
0.356 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
0.356 * [taylor]: Taking taylor expansion of (pow y 4) in y
0.356 * [taylor]: Taking taylor expansion of y in y
0.356 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
0.356 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
0.356 * [taylor]: Taking taylor expansion of (pow x 4) in x
0.356 * [taylor]: Taking taylor expansion of x in x
0.356 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
0.356 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.356 * [taylor]: Taking taylor expansion of y in x
0.356 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 4))) in x
0.356 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
0.356 * [taylor]: Taking taylor expansion of (pow x 4) in x
0.356 * [taylor]: Taking taylor expansion of x in x
0.356 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x
0.356 * [taylor]: Taking taylor expansion of (pow y 4) in x
0.356 * [taylor]: Taking taylor expansion of y in x
0.356 * [taylor]: Taking taylor expansion of 1 in y
0.357 * [taylor]: Taking taylor expansion of 0 in y
0.357 * [taylor]: Taking taylor expansion of 0 in y
0.357 * [taylor]: Taking taylor expansion of 0 in y
0.357 * [taylor]: Taking taylor expansion of (neg (/ 1 (pow y 4))) in y
0.357 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y
0.357 * [taylor]: Taking taylor expansion of (pow y 4) in y
0.357 * [taylor]: Taking taylor expansion of y in y
0.358 * [taylor]: Taking taylor expansion of 0 in y
0.358 * [taylor]: Taking taylor expansion of 0 in y
0.359 * * * [progress]: simplifying candidates
0.359 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ (exp (pow x 4.0)) (exp (pow y 4.0)))
  (log (- (pow x 4.0) (pow y 4.0)))
  (exp (- (pow x 4.0) (pow y 4.0)))
  (* (cbrt (- (pow x 4.0) (pow y 4.0))) (cbrt (- (pow x 4.0) (pow y 4.0))))
  (cbrt (- (pow x 4.0) (pow y 4.0)))
  (* (* (- (pow x 4.0) (pow y 4.0)) (- (pow x 4.0) (pow y 4.0))) (- (pow x 4.0) (pow y 4.0)))
  (sqrt (- (pow x 4.0) (pow y 4.0)))
  (sqrt (- (pow x 4.0) (pow y 4.0)))
  (- (pow (pow x 4.0) 3) (pow (pow y 4.0) 3))
  (+ (* (pow x 4.0) (pow x 4.0)) (+ (* (pow y 4.0) (pow y 4.0)) (* (pow x 4.0) (pow y 4.0))))
  (neg (pow y 4.0))
  (- (* (pow x 4.0) (pow x 4.0)) (* (pow y 4.0) (pow y 4.0)))
  (+ (pow x 4.0) (pow y 4.0))
  (+ (pow (sqrt x) 4.0) (pow (sqrt y) 4.0))
  (- (pow (sqrt x) 4.0) (pow (sqrt y) 4.0))
  (+ (pow (sqrt x) 4.0) (sqrt (pow y 4.0)))
  (- (pow (sqrt x) 4.0) (sqrt (pow y 4.0)))
  (+ (pow (sqrt x) 4.0) (pow y (/ 4.0 2)))
  (- (pow (sqrt x) 4.0) (pow y (/ 4.0 2)))
  (+ (sqrt (pow x 4.0)) (pow (sqrt y) 4.0))
  (- (sqrt (pow x 4.0)) (pow (sqrt y) 4.0))
  (+ (sqrt (pow x 4.0)) (sqrt (pow y 4.0)))
  (- (sqrt (pow x 4.0)) (sqrt (pow y 4.0)))
  (+ (sqrt (pow x 4.0)) (pow y (/ 4.0 2)))
  (- (sqrt (pow x 4.0)) (pow y (/ 4.0 2)))
  (+ (pow x (/ 4.0 2)) (pow (sqrt y) 4.0))
  (- (pow x (/ 4.0 2)) (pow (sqrt y) 4.0))
  (+ (pow x (/ 4.0 2)) (sqrt (pow y 4.0)))
  (- (pow x (/ 4.0 2)) (sqrt (pow y 4.0)))
  (+ (pow x (/ 4.0 2)) (pow y (/ 4.0 2)))
  (- (pow x (/ 4.0 2)) (pow y (/ 4.0 2)))
  (- (pow x 4.0) (pow y 4.0))
  (- (pow x 4.0) (pow y 4.0))
  (neg (pow y 4.0))
  0
  (- (pow x 4) (pow y 4))
  (- (pow x 4) (pow y 4))
0.362 * * [simplify]: iteration  0 :  126  enodes  (cost  172 )
0.364 * * [simplify]: iteration  1 :  340  enodes  (cost  165 )
0.371 * * [simplify]: iteration  2 :  1287  enodes  (cost  165 )
0.402 * * [simplify]: iteration  3 :  5001  enodes  (cost  165 )
0.403 * [simplify]: Simplified to:
   (exp (- (pow x 4.0) (pow y 4.0)))
  (log (- (pow x 4.0) (pow y 4.0)))
  (exp (- (pow x 4.0) (pow y 4.0)))
  (* (cbrt (- (pow x 4.0) (pow y 4.0))) (cbrt (- (pow x 4.0) (pow y 4.0))))
  (cbrt (- (pow x 4.0) (pow y 4.0)))
  (pow (- (pow x 4.0) (pow y 4.0)) 3)
  (sqrt (- (pow x 4.0) (pow y 4.0)))
  (sqrt (- (pow x 4.0) (pow y 4.0)))
  (- (pow (pow x 4.0) 3) (pow (pow y 4.0) 3))
  (+ (* (pow y 4.0) (+ (pow y 4.0) (pow x 4.0))) (pow x (* 2 4.0)))
  (neg (pow y 4.0))
  (+ (pow x (* 2 4.0)) (neg (pow y (* 2 4.0))))
  (+ (pow x 4.0) (pow y 4.0))
  (+ (pow (sqrt x) 4.0) (pow (sqrt y) 4.0))
  (- (pow (sqrt x) 4.0) (pow (sqrt y) 4.0))
  (+ (pow (sqrt x) 4.0) (sqrt (pow y 4.0)))
  (- (pow (sqrt x) 4.0) (sqrt (pow y 4.0)))
  (+ (pow (sqrt x) 4.0) (pow y (/ 4.0 2)))
  (- (pow (sqrt x) 4.0) (pow y (/ 4.0 2)))
  (+ (sqrt (pow x 4.0)) (pow (sqrt y) 4.0))
  (- (sqrt (pow x 4.0)) (pow (sqrt y) 4.0))
  (+ (sqrt (pow x 4.0)) (sqrt (pow y 4.0)))
  (- (sqrt (pow x 4.0)) (sqrt (pow y 4.0)))
  (+ (sqrt (pow x 4.0)) (pow y (/ 4.0 2)))
  (- (sqrt (pow x 4.0)) (pow y (/ 4.0 2)))
  (+ (pow x (/ 4.0 2)) (pow (sqrt y) 4.0))
  (- (pow x (/ 4.0 2)) (pow (sqrt y) 4.0))
  (+ (pow x (/ 4.0 2)) (sqrt (pow y 4.0)))
  (- (pow x (/ 4.0 2)) (sqrt (pow y 4.0)))
  (+ (pow x (/ 4.0 2)) (pow y (/ 4.0 2)))
  (- (pow x (/ 4.0 2)) (pow y (/ 4.0 2)))
  (- (pow x 4.0) (pow y 4.0))
  (- (pow x 4.0) (pow y 4.0))
  (neg (pow y 4.0))
  0
  (- (pow x 4) (pow y 4))
  (- (pow x 4) (pow y 4))
0.404 * * * [progress]: adding candidates to table
0.451 * [progress]: [Phase 3 of 3] Extracting.
0.455 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (pow x 4.0) (pow y 4.0))
0.455 * * [simplify]: iteration  0 :  6  enodes  (cost  3 )
0.455 * [simplify]: Simplified to:
   (- (pow x 4.0) (pow y 4.0))
1.922 * [regime-testing]: End program error score: 0.002250281285160645