0.725 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.022 * * * [progress]: [2/2] Setting up program.
0.026 * [progress]: [Phase 2 of 3] Improving.
0.029 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* 0.5 (- (* x x) y))
0.034 * * [simplify]: iteration  0 :  9  enodes  (cost  3 )
0.035 * * [simplify]: iteration  1 :  16  enodes  (cost  3 )
0.036 * * [simplify]: iteration  2 :  26  enodes  (cost  3 )
0.037 * * [simplify]: iteration  3 :  33  enodes  (cost  3 )
0.038 * * [simplify]: iteration  4 :  33  enodes  (cost  3 )
0.038 * [simplify]: Simplified to:
   (* 0.5 (- (* x x) y))
0.040 * * [progress]: iteration 1 / 4
0.040 * * * [progress]: picking best candidate
0.043 * * * * [pick]: Picked  #<alt (λ (x y) (* 0.5 (- (* x x) y)))>
0.043 * * * [progress]: localizing error
0.050 * * * [progress]: generating rewritten candidates
0.050 * * * * [progress]: [ 1 / 1 ] rewriting at (2 2)
0.249 * * * [progress]: generating series expansions
0.249 * * * * [progress]: [ 1 / 1 ] generating series at (2 2)
0.253 * [approximate]: Taking taylor expansion of (- (pow x 2) y) in (x y) around 0
0.254 * [taylor]: Taking taylor expansion of (- (pow x 2) y) in y
0.254 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.254 * [taylor]: Taking taylor expansion of x in y
0.254 * [taylor]: Taking taylor expansion of y in y
0.255 * [taylor]: Taking taylor expansion of (- (pow x 2) y) in x
0.255 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.255 * [taylor]: Taking taylor expansion of x in x
0.255 * [taylor]: Taking taylor expansion of y in x
0.255 * [taylor]: Taking taylor expansion of (- (pow x 2) y) in x
0.255 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.255 * [taylor]: Taking taylor expansion of x in x
0.255 * [taylor]: Taking taylor expansion of y in x
0.256 * [taylor]: Taking taylor expansion of (neg y) in y
0.256 * [taylor]: Taking taylor expansion of y in y
0.256 * [taylor]: Taking taylor expansion of 0 in y
0.256 * [taylor]: Taking taylor expansion of 1 in y
0.256 * [taylor]: Taking taylor expansion of 0 in y
0.257 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in (x y) around 0
0.257 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in y
0.257 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.257 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.257 * [taylor]: Taking taylor expansion of x in y
0.257 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.257 * [taylor]: Taking taylor expansion of y in y
0.257 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in x
0.257 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.257 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.257 * [taylor]: Taking taylor expansion of x in x
0.257 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.257 * [taylor]: Taking taylor expansion of y in x
0.257 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in x
0.257 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.257 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.257 * [taylor]: Taking taylor expansion of x in x
0.257 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.257 * [taylor]: Taking taylor expansion of y in x
0.257 * [taylor]: Taking taylor expansion of 1 in y
0.258 * [taylor]: Taking taylor expansion of 0 in y
0.258 * [taylor]: Taking taylor expansion of (neg (/ 1 y)) in y
0.258 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.258 * [taylor]: Taking taylor expansion of y in y
0.258 * [taylor]: Taking taylor expansion of 0 in y
0.259 * [taylor]: Taking taylor expansion of 0 in y
0.259 * [approximate]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in (x y) around 0
0.259 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in y
0.259 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.259 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.259 * [taylor]: Taking taylor expansion of x in y
0.259 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.259 * [taylor]: Taking taylor expansion of y in y
0.259 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in x
0.259 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.259 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.259 * [taylor]: Taking taylor expansion of x in x
0.259 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.259 * [taylor]: Taking taylor expansion of y in x
0.259 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in x
0.260 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.260 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.260 * [taylor]: Taking taylor expansion of x in x
0.260 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.260 * [taylor]: Taking taylor expansion of y in x
0.260 * [taylor]: Taking taylor expansion of 1 in y
0.260 * [taylor]: Taking taylor expansion of 0 in y
0.260 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.260 * [taylor]: Taking taylor expansion of y in y
0.260 * [taylor]: Taking taylor expansion of 0 in y
0.260 * [taylor]: Taking taylor expansion of 0 in y
0.260 * * * [progress]: simplifying candidates
0.261 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ (exp (* x x)) (exp y))
  (log (- (* x x) y))
  (exp (- (* x x) y))
  (* (cbrt (- (* x x) y)) (cbrt (- (* x x) y)))
  (cbrt (- (* x x) y))
  (* (* (- (* x x) y) (- (* x x) y)) (- (* x x) y))
  (sqrt (- (* x x) y))
  (sqrt (- (* x x) y))
  (- (pow (* x x) 3) (pow y 3))
  (+ (* (* x x) (* x x)) (+ (* y y) (* (* x x) y)))
  (neg y)
  (- (* (* x x) (* x x)) (* y y))
  (+ (* x x) y)
  (+ x (sqrt y))
  (- x (sqrt y))
  (neg y)
  (- (pow x 2) y)
  (- (pow x 2) y)
  (- (pow x 2) y)
0.263 * * [simplify]: iteration  0 :  73  enodes  (cost  63 )
0.265 * * [simplify]: iteration  1 :  216  enodes  (cost  56 )
0.268 * * [simplify]: iteration  2 :  535  enodes  (cost  56 )
0.279 * * [simplify]: iteration  3 :  1794  enodes  (cost  56 )
0.322 * * [simplify]: iteration  4 :  5001  enodes  (cost  56 )
0.323 * [simplify]: Simplified to:
   (exp (- (* x x) y))
  (log (- (* x x) y))
  (exp (- (* x x) y))
  (* (cbrt (- (* x x) y)) (cbrt (- (* x x) y)))
  (cbrt (- (* x x) y))
  (pow (- (pow x 2) y) 3)
  (sqrt (- (* x x) y))
  (sqrt (- (* x x) y))
  (- (pow (* x x) 3) (pow y 3))
  (+ (+ (pow x 4) (* (* x x) y)) (* y y))
  (- 0 y)
  (+ (neg (* y y)) (pow x 4))
  (+ (* x x) y)
  (+ x (sqrt y))
  (- x (sqrt y))
  (- 0 y)
  (- (pow x 2) y)
  (- (pow x 2) y)
  (- (pow x 2) y)
0.323 * * * [progress]: adding candidates to table
0.342 * * [progress]: iteration 2 / 4
0.342 * * * [progress]: picking best candidate
0.345 * * * * [pick]: Picked  #<alt (λ (x y) (* 0.5 (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y))))>
0.345 * * * [progress]: localizing error
0.355 * * * [progress]: generating rewritten candidates
0.355 * * * * [progress]: [ 1 / 3 ] rewriting at (2 2)
0.366 * * * * [progress]: [ 2 / 3 ] rewriting at (2 2 1)
0.372 * * * * [progress]: [ 3 / 3 ] rewriting at (2 2 2)
0.377 * * * [progress]: generating series expansions
0.377 * * * * [progress]: [ 1 / 3 ] generating series at (2 2)
0.378 * [approximate]: Taking taylor expansion of (/ (- (pow x 4) (pow y 2)) (+ (pow x 2) y)) in (y x) around 0
0.378 * [taylor]: Taking taylor expansion of (/ (- (pow x 4) (pow y 2)) (+ (pow x 2) y)) in x
0.378 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 2)) in x
0.378 * [taylor]: Taking taylor expansion of (pow x 4) in x
0.378 * [taylor]: Taking taylor expansion of x in x
0.378 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.378 * [taylor]: Taking taylor expansion of y in x
0.378 * [taylor]: Taking taylor expansion of (+ (pow x 2) y) in x
0.378 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.378 * [taylor]: Taking taylor expansion of x in x
0.378 * [taylor]: Taking taylor expansion of y in x
0.379 * [taylor]: Taking taylor expansion of (/ (- (pow x 4) (pow y 2)) (+ (pow x 2) y)) in y
0.379 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 2)) in y
0.379 * [taylor]: Taking taylor expansion of (pow x 4) in y
0.379 * [taylor]: Taking taylor expansion of x in y
0.379 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.379 * [taylor]: Taking taylor expansion of y in y
0.379 * [taylor]: Taking taylor expansion of (+ (pow x 2) y) in y
0.379 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.379 * [taylor]: Taking taylor expansion of x in y
0.379 * [taylor]: Taking taylor expansion of y in y
0.379 * [taylor]: Taking taylor expansion of (/ (- (pow x 4) (pow y 2)) (+ (pow x 2) y)) in y
0.379 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 2)) in y
0.379 * [taylor]: Taking taylor expansion of (pow x 4) in y
0.379 * [taylor]: Taking taylor expansion of x in y
0.379 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.379 * [taylor]: Taking taylor expansion of y in y
0.379 * [taylor]: Taking taylor expansion of (+ (pow x 2) y) in y
0.379 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.379 * [taylor]: Taking taylor expansion of x in y
0.379 * [taylor]: Taking taylor expansion of y in y
0.380 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.380 * [taylor]: Taking taylor expansion of x in x
0.380 * [taylor]: Taking taylor expansion of (neg 1) in x
0.380 * [taylor]: Taking taylor expansion of 1 in x
0.381 * [taylor]: Taking taylor expansion of 0 in x
0.381 * [taylor]: Taking taylor expansion of 0 in x
0.382 * [taylor]: Taking taylor expansion of 0 in x
0.382 * [approximate]: Taking taylor expansion of (/ (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) (+ (/ 1 (pow x 2)) (/ 1 y))) in (y x) around 0
0.382 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) (+ (/ 1 (pow x 2)) (/ 1 y))) in x
0.382 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) in x
0.382 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
0.382 * [taylor]: Taking taylor expansion of (pow x 4) in x
0.382 * [taylor]: Taking taylor expansion of x in x
0.382 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.382 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.382 * [taylor]: Taking taylor expansion of y in x
0.382 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in x
0.382 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.383 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.383 * [taylor]: Taking taylor expansion of x in x
0.383 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.383 * [taylor]: Taking taylor expansion of y in x
0.383 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) (+ (/ 1 (pow x 2)) (/ 1 y))) in y
0.383 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) in y
0.383 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
0.383 * [taylor]: Taking taylor expansion of (pow x 4) in y
0.383 * [taylor]: Taking taylor expansion of x in y
0.383 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.383 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.383 * [taylor]: Taking taylor expansion of y in y
0.383 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in y
0.383 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.383 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.383 * [taylor]: Taking taylor expansion of x in y
0.383 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.383 * [taylor]: Taking taylor expansion of y in y
0.383 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) (+ (/ 1 (pow x 2)) (/ 1 y))) in y
0.383 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) in y
0.383 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
0.383 * [taylor]: Taking taylor expansion of (pow x 4) in y
0.383 * [taylor]: Taking taylor expansion of x in y
0.383 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.383 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.383 * [taylor]: Taking taylor expansion of y in y
0.383 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in y
0.383 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.384 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.384 * [taylor]: Taking taylor expansion of x in y
0.384 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.384 * [taylor]: Taking taylor expansion of y in y
0.384 * [taylor]: Taking taylor expansion of -1 in x
0.384 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.384 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.384 * [taylor]: Taking taylor expansion of x in x
0.385 * [taylor]: Taking taylor expansion of 0 in x
0.385 * [taylor]: Taking taylor expansion of 0 in x
0.386 * [taylor]: Taking taylor expansion of 0 in x
0.388 * [taylor]: Taking taylor expansion of 0 in x
0.388 * [approximate]: Taking taylor expansion of (/ (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) (- (/ 1 (pow x 2)) (/ 1 y))) in (y x) around 0
0.388 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) (- (/ 1 (pow x 2)) (/ 1 y))) in x
0.388 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) in x
0.388 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
0.388 * [taylor]: Taking taylor expansion of (pow x 4) in x
0.388 * [taylor]: Taking taylor expansion of x in x
0.388 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.388 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.388 * [taylor]: Taking taylor expansion of y in x
0.389 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in x
0.389 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.389 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.389 * [taylor]: Taking taylor expansion of x in x
0.389 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.389 * [taylor]: Taking taylor expansion of y in x
0.389 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) (- (/ 1 (pow x 2)) (/ 1 y))) in y
0.389 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) in y
0.389 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
0.389 * [taylor]: Taking taylor expansion of (pow x 4) in y
0.389 * [taylor]: Taking taylor expansion of x in y
0.389 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.389 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.389 * [taylor]: Taking taylor expansion of y in y
0.389 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in y
0.389 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.389 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.389 * [taylor]: Taking taylor expansion of x in y
0.389 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.389 * [taylor]: Taking taylor expansion of y in y
0.389 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) (- (/ 1 (pow x 2)) (/ 1 y))) in y
0.389 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) in y
0.389 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
0.389 * [taylor]: Taking taylor expansion of (pow x 4) in y
0.389 * [taylor]: Taking taylor expansion of x in y
0.390 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.390 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.390 * [taylor]: Taking taylor expansion of y in y
0.390 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in y
0.390 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.390 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.390 * [taylor]: Taking taylor expansion of x in y
0.390 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.390 * [taylor]: Taking taylor expansion of y in y
0.390 * [taylor]: Taking taylor expansion of 1 in x
0.390 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.390 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.390 * [taylor]: Taking taylor expansion of x in x
0.391 * [taylor]: Taking taylor expansion of 0 in x
0.392 * [taylor]: Taking taylor expansion of 0 in x
0.398 * [taylor]: Taking taylor expansion of 0 in x
0.399 * [taylor]: Taking taylor expansion of 0 in x
0.399 * * * * [progress]: [ 2 / 3 ] generating series at (2 2 1)
0.400 * [approximate]: Taking taylor expansion of (- (pow x 4) (pow y 2)) in (y x) around 0
0.400 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 2)) in x
0.400 * [taylor]: Taking taylor expansion of (pow x 4) in x
0.400 * [taylor]: Taking taylor expansion of x in x
0.400 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.400 * [taylor]: Taking taylor expansion of y in x
0.400 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 2)) in y
0.400 * [taylor]: Taking taylor expansion of (pow x 4) in y
0.400 * [taylor]: Taking taylor expansion of x in y
0.400 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.400 * [taylor]: Taking taylor expansion of y in y
0.400 * [taylor]: Taking taylor expansion of (- (pow x 4) (pow y 2)) in y
0.400 * [taylor]: Taking taylor expansion of (pow x 4) in y
0.400 * [taylor]: Taking taylor expansion of x in y
0.400 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.400 * [taylor]: Taking taylor expansion of y in y
0.400 * [taylor]: Taking taylor expansion of (pow x 4) in x
0.400 * [taylor]: Taking taylor expansion of x in x
0.400 * [taylor]: Taking taylor expansion of 0 in x
0.400 * [taylor]: Taking taylor expansion of (neg 1) in x
0.400 * [taylor]: Taking taylor expansion of 1 in x
0.401 * [taylor]: Taking taylor expansion of 0 in x
0.401 * [taylor]: Taking taylor expansion of 0 in x
0.401 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) in (y x) around 0
0.401 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) in x
0.401 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
0.401 * [taylor]: Taking taylor expansion of (pow x 4) in x
0.401 * [taylor]: Taking taylor expansion of x in x
0.401 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.401 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.401 * [taylor]: Taking taylor expansion of y in x
0.401 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) in y
0.401 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
0.401 * [taylor]: Taking taylor expansion of (pow x 4) in y
0.401 * [taylor]: Taking taylor expansion of x in y
0.402 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.402 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.402 * [taylor]: Taking taylor expansion of y in y
0.402 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) in y
0.402 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
0.402 * [taylor]: Taking taylor expansion of (pow x 4) in y
0.402 * [taylor]: Taking taylor expansion of x in y
0.402 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.402 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.402 * [taylor]: Taking taylor expansion of y in y
0.402 * [taylor]: Taking taylor expansion of (neg 1) in x
0.402 * [taylor]: Taking taylor expansion of 1 in x
0.402 * [taylor]: Taking taylor expansion of 0 in x
0.402 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
0.402 * [taylor]: Taking taylor expansion of (pow x 4) in x
0.402 * [taylor]: Taking taylor expansion of x in x
0.403 * [taylor]: Taking taylor expansion of 0 in x
0.403 * [taylor]: Taking taylor expansion of 0 in x
0.404 * [taylor]: Taking taylor expansion of 0 in x
0.405 * [taylor]: Taking taylor expansion of 0 in x
0.405 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) in (y x) around 0
0.405 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) in x
0.405 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
0.405 * [taylor]: Taking taylor expansion of (pow x 4) in x
0.405 * [taylor]: Taking taylor expansion of x in x
0.405 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.405 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.405 * [taylor]: Taking taylor expansion of y in x
0.405 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) in y
0.405 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
0.405 * [taylor]: Taking taylor expansion of (pow x 4) in y
0.405 * [taylor]: Taking taylor expansion of x in y
0.406 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.406 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.406 * [taylor]: Taking taylor expansion of y in y
0.406 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) (/ 1 (pow y 2))) in y
0.406 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in y
0.406 * [taylor]: Taking taylor expansion of (pow x 4) in y
0.406 * [taylor]: Taking taylor expansion of x in y
0.406 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.406 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.406 * [taylor]: Taking taylor expansion of y in y
0.406 * [taylor]: Taking taylor expansion of (neg 1) in x
0.406 * [taylor]: Taking taylor expansion of 1 in x
0.406 * [taylor]: Taking taylor expansion of 0 in x
0.406 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
0.406 * [taylor]: Taking taylor expansion of (pow x 4) in x
0.406 * [taylor]: Taking taylor expansion of x in x
0.407 * [taylor]: Taking taylor expansion of 0 in x
0.407 * [taylor]: Taking taylor expansion of 0 in x
0.408 * [taylor]: Taking taylor expansion of 0 in x
0.409 * [taylor]: Taking taylor expansion of 0 in x
0.409 * * * * [progress]: [ 3 / 3 ] generating series at (2 2 2)
0.409 * [approximate]: Taking taylor expansion of (+ (pow x 2) y) in (x y) around 0
0.409 * [taylor]: Taking taylor expansion of (+ (pow x 2) y) in y
0.409 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.409 * [taylor]: Taking taylor expansion of x in y
0.409 * [taylor]: Taking taylor expansion of y in y
0.409 * [taylor]: Taking taylor expansion of (+ (pow x 2) y) in x
0.409 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.409 * [taylor]: Taking taylor expansion of x in x
0.409 * [taylor]: Taking taylor expansion of y in x
0.409 * [taylor]: Taking taylor expansion of (+ (pow x 2) y) in x
0.409 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.409 * [taylor]: Taking taylor expansion of x in x
0.409 * [taylor]: Taking taylor expansion of y in x
0.409 * [taylor]: Taking taylor expansion of y in y
0.409 * [taylor]: Taking taylor expansion of 0 in y
0.410 * [taylor]: Taking taylor expansion of 1 in y
0.410 * [taylor]: Taking taylor expansion of 0 in y
0.410 * [approximate]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in (x y) around 0
0.410 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in y
0.410 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.410 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.410 * [taylor]: Taking taylor expansion of x in y
0.410 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.410 * [taylor]: Taking taylor expansion of y in y
0.410 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in x
0.410 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.410 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.410 * [taylor]: Taking taylor expansion of x in x
0.410 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.410 * [taylor]: Taking taylor expansion of y in x
0.410 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in x
0.410 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.410 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.410 * [taylor]: Taking taylor expansion of x in x
0.410 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.410 * [taylor]: Taking taylor expansion of y in x
0.410 * [taylor]: Taking taylor expansion of 1 in y
0.410 * [taylor]: Taking taylor expansion of 0 in y
0.411 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.411 * [taylor]: Taking taylor expansion of y in y
0.411 * [taylor]: Taking taylor expansion of 0 in y
0.411 * [taylor]: Taking taylor expansion of 0 in y
0.411 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in (x y) around 0
0.411 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in y
0.411 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.411 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.411 * [taylor]: Taking taylor expansion of x in y
0.411 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.411 * [taylor]: Taking taylor expansion of y in y
0.411 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in x
0.411 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.411 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.411 * [taylor]: Taking taylor expansion of x in x
0.412 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.412 * [taylor]: Taking taylor expansion of y in x
0.412 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in x
0.412 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.412 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.412 * [taylor]: Taking taylor expansion of x in x
0.412 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.412 * [taylor]: Taking taylor expansion of y in x
0.412 * [taylor]: Taking taylor expansion of 1 in y
0.412 * [taylor]: Taking taylor expansion of 0 in y
0.412 * [taylor]: Taking taylor expansion of (neg (/ 1 y)) in y
0.412 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.412 * [taylor]: Taking taylor expansion of y in y
0.412 * [taylor]: Taking taylor expansion of 0 in y
0.412 * [taylor]: Taking taylor expansion of 0 in y
0.413 * * * [progress]: simplifying candidates
0.414 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (log (+ (neg (* y y)) (pow x 4))) (log (+ (* x x) y)))
  (log (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y)))
  (exp (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y)))
  (/ (* (* (+ (neg (* y y)) (pow x 4)) (+ (neg (* y y)) (pow x 4))) (+ (neg (* y y)) (pow x 4))) (* (* (+ (* x x) y) (+ (* x x) y)) (+ (* x x) y)))
  (* (cbrt (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y))) (cbrt (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y))))
  (cbrt (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y)))
  (* (* (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y)) (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y))) (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y)))
  (sqrt (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y)))
  (sqrt (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y)))
  (neg (+ (neg (* y y)) (pow x 4)))
  (neg (+ (* x x) y))
  (/ 0 (+ (* x x) y))
  (/ (- (* y y) (pow x 4)) (+ (* x x) y))
  (/ (* (cbrt (+ (neg (* y y)) (pow x 4))) (cbrt (+ (neg (* y y)) (pow x 4)))) (* (cbrt (+ (* x x) y)) (cbrt (+ (* x x) y))))
  (/ (cbrt (+ (neg (* y y)) (pow x 4))) (cbrt (+ (* x x) y)))
  (/ (* (cbrt (+ (neg (* y y)) (pow x 4))) (cbrt (+ (neg (* y y)) (pow x 4)))) (sqrt (+ (* x x) y)))
  (/ (cbrt (+ (neg (* y y)) (pow x 4))) (sqrt (+ (* x x) y)))
  (/ (* (cbrt (+ (neg (* y y)) (pow x 4))) (cbrt (+ (neg (* y y)) (pow x 4)))) 1)
  (/ (cbrt (+ (neg (* y y)) (pow x 4))) (+ (* x x) y))
  (/ (sqrt (+ (neg (* y y)) (pow x 4))) (* (cbrt (+ (* x x) y)) (cbrt (+ (* x x) y))))
  (/ (sqrt (+ (neg (* y y)) (pow x 4))) (cbrt (+ (* x x) y)))
  (/ (sqrt (+ (neg (* y y)) (pow x 4))) (sqrt (+ (* x x) y)))
  (/ (sqrt (+ (neg (* y y)) (pow x 4))) (sqrt (+ (* x x) y)))
  (/ (sqrt (+ (neg (* y y)) (pow x 4))) 1)
  (/ (sqrt (+ (neg (* y y)) (pow x 4))) (+ (* x x) y))
  (/ 1 (* (cbrt (+ (* x x) y)) (cbrt (+ (* x x) y))))
  (/ (+ (neg (* y y)) (pow x 4)) (cbrt (+ (* x x) y)))
  (/ 1 (sqrt (+ (* x x) y)))
  (/ (+ (neg (* y y)) (pow x 4)) (sqrt (+ (* x x) y)))
  (/ 1 1)
  (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y))
  (/ 1 (* (cbrt (+ (* x x) y)) (cbrt (+ (* x x) y))))
  (/ (+ (neg (* y y)) (pow x 4)) (cbrt (+ (* x x) y)))
  (/ 1 (sqrt (+ (* x x) y)))
  (/ (+ (neg (* y y)) (pow x 4)) (sqrt (+ (* x x) y)))
  (/ 1 1)
  (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y))
  (/ 1 (+ (* x x) y))
  (/ (+ (* x x) y) (+ (neg (* y y)) (pow x 4)))
  (/ (+ (neg (* y y)) (pow x 4)) (* (cbrt (+ (* x x) y)) (cbrt (+ (* x x) y))))
  (/ (+ (neg (* y y)) (pow x 4)) (sqrt (+ (* x x) y)))
  (/ (+ (neg (* y y)) (pow x 4)) 1)
  (/ (+ (* x x) y) (cbrt (+ (neg (* y y)) (pow x 4))))
  (/ (+ (* x x) y) (sqrt (+ (neg (* y y)) (pow x 4))))
  (/ (+ (* x x) y) (+ (neg (* y y)) (pow x 4)))
  (/ (+ (* x x) y) (+ (neg (* y y)) (pow x 4)))
  (/ (+ (neg (* y y)) (pow x 4)) (+ (pow (* x x) 3) (pow y 3)))
  (/ (+ (neg (* y y)) (pow x 4)) (- (* (* x x) (* x x)) (* y y)))
  (* (+ (* x x) y) (+ (* (neg (* y y)) (neg (* y y))) (- (* (pow x 4) (pow x 4)) (* (neg (* y y)) (pow x 4)))))
  (* (+ (* x x) y) (- (neg (* y y)) (pow x 4)))
  (* (/ 1 (exp (* y y))) (exp (pow x 4)))
  (* (exp (neg (* y y))) (exp (pow x 4)))
  (log (+ (neg (* y y)) (pow x 4)))
  (exp (+ (neg (* y y)) (pow x 4)))
  (* (cbrt (+ (neg (* y y)) (pow x 4))) (cbrt (+ (neg (* y y)) (pow x 4))))
  (cbrt (+ (neg (* y y)) (pow x 4)))
  (* (* (+ (neg (* y y)) (pow x 4)) (+ (neg (* y y)) (pow x 4))) (+ (neg (* y y)) (pow x 4)))
  (sqrt (+ (neg (* y y)) (pow x 4)))
  (sqrt (+ (neg (* y y)) (pow x 4)))
  (+ (pow (neg (* y y)) 3) (pow (pow x 4) 3))
  (+ (* (neg (* y y)) (neg (* y y))) (- (* (pow x 4) (pow x 4)) (* (neg (* y y)) (pow x 4))))
  (- (* (neg (* y y)) (neg (* y y))) (* (pow x 4) (pow x 4)))
  (- (neg (* y y)) (pow x 4))
  (+ (neg (* y y)) (pow x 4))
  (- (* y y) (pow x 4))
  (* (exp (* x x)) (exp y))
  (log (+ (* x x) y))
  (exp (+ (* x x) y))
  (* (cbrt (+ (* x x) y)) (cbrt (+ (* x x) y)))
  (cbrt (+ (* x x) y))
  (* (* (+ (* x x) y) (+ (* x x) y)) (+ (* x x) y))
  (sqrt (+ (* x x) y))
  (sqrt (+ (* x x) y))
  (+ (pow (* x x) 3) (pow y 3))
  (+ (* (* x x) (* x x)) (- (* y y) (* (* x x) y)))
  (- (* (* x x) (* x x)) (* y y))
  (- (* x x) y)
  (- (pow x 2) y)
  (- (pow x 2) y)
  (- (pow x 2) y)
  (* -1 (pow y 2))
  (- (pow x 4) (pow y 2))
  (- (pow x 4) (pow y 2))
  (+ (pow x 2) y)
  (+ (pow x 2) y)
  (+ (pow x 2) y)
0.418 * * [simplify]: iteration  0 :  263  enodes  (cost  582 )
0.424 * * [simplify]: iteration  1 :  1316  enodes  (cost  506 )
0.452 * * [simplify]: iteration  2 :  5002  enodes  (cost  488 )
0.455 * [simplify]: Simplified to:
   (log (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y)))
  (log (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y)))
  (exp (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y)))
  (pow (/ (- (pow x 4) (pow y 2)) (+ (pow x 2) y)) 3)
  (* (cbrt (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y))) (cbrt (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y))))
  (cbrt (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y)))
  (pow (/ (- (pow x 4) (pow y 2)) (+ (pow x 2) y)) 3)
  (sqrt (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y)))
  (sqrt (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y)))
  (- (pow y 2) (pow x 4))
  (neg (+ (* x x) y))
  0
  (/ (- (* y y) (pow x 4)) (+ (* x x) y))
  (/ (* (cbrt (+ (neg (* y y)) (pow x 4))) (cbrt (+ (neg (* y y)) (pow x 4)))) (* (cbrt (+ (* x x) y)) (cbrt (+ (* x x) y))))
  (/ (cbrt (+ (neg (* y y)) (pow x 4))) (cbrt (+ (* x x) y)))
  (/ (* (cbrt (+ (neg (* y y)) (pow x 4))) (cbrt (+ (neg (* y y)) (pow x 4)))) (sqrt (+ (* x x) y)))
  (/ (cbrt (+ (neg (* y y)) (pow x 4))) (sqrt (+ (* x x) y)))
  (* (cbrt (+ (neg (* y y)) (pow x 4))) (cbrt (+ (neg (* y y)) (pow x 4))))
  (/ (cbrt (+ (neg (* y y)) (pow x 4))) (+ (* x x) y))
  (/ (sqrt (+ (neg (* y y)) (pow x 4))) (* (cbrt (+ (* x x) y)) (cbrt (+ (* x x) y))))
  (/ (sqrt (+ (neg (* y y)) (pow x 4))) (cbrt (+ (* x x) y)))
  (/ (sqrt (+ (neg (* y y)) (pow x 4))) (sqrt (+ (* x x) y)))
  (/ (sqrt (+ (neg (* y y)) (pow x 4))) (sqrt (+ (* x x) y)))
  (sqrt (+ (neg (* y y)) (pow x 4)))
  (/ (sqrt (+ (neg (* y y)) (pow x 4))) (+ (* x x) y))
  (/ 1 (* (cbrt (+ (* x x) y)) (cbrt (+ (* x x) y))))
  (/ (- (pow x 4) (pow y 2)) (cbrt (+ (* x x) y)))
  (/ 1 (sqrt (+ (* x x) y)))
  (/ (- (pow x 4) (pow y 2)) (sqrt (+ (* x x) y)))
  1
  (/ (- (pow x 4) (pow y 2)) (+ (pow x 2) y))
  (/ 1 (* (cbrt (+ (* x x) y)) (cbrt (+ (* x x) y))))
  (/ (- (pow x 4) (pow y 2)) (cbrt (+ (* x x) y)))
  (/ 1 (sqrt (+ (* x x) y)))
  (/ (- (pow x 4) (pow y 2)) (sqrt (+ (* x x) y)))
  1
  (/ (- (pow x 4) (pow y 2)) (+ (pow x 2) y))
  (/ 1 (+ (* x x) y))
  (/ 1 (- (pow x 2) y))
  (/ (/ (- (pow x 4) (pow y 2)) (cbrt (+ (* x x) y))) (cbrt (+ (* x x) y)))
  (/ (- (pow x 4) (pow y 2)) (sqrt (+ (* x x) y)))
  (- (pow x 4) (pow y 2))
  (/ (+ (* x x) y) (cbrt (+ (neg (* y y)) (pow x 4))))
  (/ (+ (* x x) y) (sqrt (+ (neg (* y y)) (pow x 4))))
  (/ 1 (- (pow x 2) y))
  (/ 1 (- (pow x 2) y))
  (/ (- (pow x 4) (pow y 2)) (+ (pow (* x x) 3) (pow y 3)))
  1
  (* (+ (pow x 8) (+ (* (pow y 2) (pow x 4)) (pow y 4))) (+ (pow x 2) y))
  (* (+ (* x x) y) (- (neg (* y y)) (pow x 4)))
  (exp (- (pow x 4) (pow y 2)))
  (exp (- (pow x 4) (pow y 2)))
  (log (- (pow x 4) (pow y 2)))
  (exp (- (pow x 4) (pow y 2)))
  (* (cbrt (+ (neg (* y y)) (pow x 4))) (cbrt (+ (neg (* y y)) (pow x 4))))
  (cbrt (+ (neg (* y y)) (pow x 4)))
  (pow (- (pow x 4) (pow y 2)) 3)
  (sqrt (+ (neg (* y y)) (pow x 4)))
  (sqrt (+ (neg (* y y)) (pow x 4)))
  (- (pow (pow x 4) 3) (pow (pow y 2) 3))
  (+ (pow x 8) (+ (* (pow y 2) (pow x 4)) (pow y 4)))
  (+ (neg (pow x 8)) (pow y 4))
  (- (neg (* y y)) (pow x 4))
  (- (pow x 4) (pow y 2))
  (- (pow y 2) (pow x 4))
  (exp (+ (* x x) y))
  (log (+ (pow x 2) y))
  (exp (+ (* x x) y))
  (* (cbrt (+ (* x x) y)) (cbrt (+ (* x x) y)))
  (cbrt (+ (* x x) y))
  (pow (+ (pow x 2) y) 3)
  (sqrt (+ (* x x) y))
  (sqrt (+ (* x x) y))
  (+ (pow (* x x) 3) (pow y 3))
  (- (+ (pow x 4) (pow y 2)) (* (* x x) y))
  (- (pow x 4) (pow y 2))
  (- (pow x 2) y)
  (- (pow x 2) y)
  (- (pow x 2) y)
  (- (pow x 2) y)
  (* -1 (pow y 2))
  (- (pow x 4) (pow y 2))
  (- (pow x 4) (pow y 2))
  (+ (pow x 2) y)
  (+ (pow x 2) y)
  (+ (pow x 2) y)
0.455 * * * [progress]: adding candidates to table
0.551 * [progress]: [Phase 3 of 3] Extracting.
0.551 * * [regime]: Finding splitpoints for: (#<alt (λ (x y) (* 0.5 (- (* x x) y)))> #<alt (λ (x y) (* 0.5 (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y))))>)
0.552 * * * [regime-changes]: Trying 5 branch expressions: ((* x x) (- (* x x) y) (* 0.5 (- (* x x) y)) y x)
0.552 * * * * [regimes]: Trying to branch on (* x x) from (#<alt (λ (x y) (* 0.5 (- (* x x) y)))> #<alt (λ (x y) (* 0.5 (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y))))>)
0.586 * * * * [regimes]: Trying to branch on (- (* x x) y) from (#<alt (λ (x y) (* 0.5 (- (* x x) y)))> #<alt (λ (x y) (* 0.5 (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y))))>)
0.619 * * * * [regimes]: Trying to branch on (* 0.5 (- (* x x) y)) from (#<alt (λ (x y) (* 0.5 (- (* x x) y)))> #<alt (λ (x y) (* 0.5 (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y))))>)
0.650 * * * * [regimes]: Trying to branch on y from (#<alt (λ (x y) (* 0.5 (- (* x x) y)))> #<alt (λ (x y) (* 0.5 (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y))))>)
0.681 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x y) (* 0.5 (- (* x x) y)))> #<alt (λ (x y) (* 0.5 (/ (+ (neg (* y y)) (pow x 4)) (+ (* x x) y))))>)
0.712 * * * [regime]: Found split indices: #<option (#s(si 0 255))>
0.713 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* 0.5 (- (* x x) y))
0.713 * * [simplify]: iteration  0 :  7  enodes  (cost  3 )
0.713 * * [simplify]: iteration  1 :  7  enodes  (cost  3 )
0.713 * [simplify]: Simplified to:
   (* 0.5 (- (* x x) y))
1.476 * [regime-testing]: Baseline error score: 0.0143651569690722
1.477 * [regime-testing]: Oracle error score: 0.012791839991859904
1.479 * [regime-testing]: End program error score: 0.0143651569690722