0.721 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.021 * * * [progress]: [2/2] Setting up program.
0.025 * [progress]: [Phase 2 of 3] Improving.
0.027 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* 0.5 (- (* x x) y))
0.031 * * [simplify]: iteration  0 :  9  enodes  (cost  3 )
0.032 * * [simplify]: iteration  1 :  16  enodes  (cost  3 )
0.034 * * [simplify]: iteration  2 :  26  enodes  (cost  3 )
0.035 * * [simplify]: iteration  3 :  33  enodes  (cost  3 )
0.036 * * [simplify]: iteration  4 :  33  enodes  (cost  3 )
0.037 * [simplify]: Simplified to:
   (* 0.5 (- (* x x) y))
0.038 * * [progress]: iteration 1 / 4
0.038 * * * [progress]: picking best candidate
0.041 * * * * [pick]: Picked  #<alt (λ (x y) (* 0.5 (- (* x x) y)))>
0.041 * * * [progress]: localizing error
0.048 * * * [progress]: generating rewritten candidates
0.048 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.249 * * * [progress]: generating series expansions
0.249 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.253 * [approximate]: Taking taylor expansion of (* 0.5 (- (pow x 2) y)) in (x y) around 0
0.254 * [taylor]: Taking taylor expansion of (* 0.5 (- (pow x 2) y)) in y
0.254 * [taylor]: Taking taylor expansion of 0.5 in y
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 (* 0.5 (- (pow x 2) y)) in x
0.255 * [taylor]: Taking taylor expansion of 0.5 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
0.255 * [taylor]: Taking taylor expansion of (* 0.5 (- (pow x 2) y)) in x
0.255 * [taylor]: Taking taylor expansion of 0.5 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 (* -0.5 y) in y
0.256 * [taylor]: Taking taylor expansion of -0.5 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 0.5 in y
0.257 * [taylor]: Taking taylor expansion of 0 in y
0.257 * [approximate]: Taking taylor expansion of (* 0.5 (- (/ 1 (pow x 2)) (/ 1 y))) in (x y) around 0
0.257 * [taylor]: Taking taylor expansion of (* 0.5 (- (/ 1 (pow x 2)) (/ 1 y))) in y
0.257 * [taylor]: Taking taylor expansion of 0.5 in y
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
0.258 * [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 (* 0.5 (- (/ 1 (pow x 2)) (/ 1 y))) in x
0.258 * [taylor]: Taking taylor expansion of 0.5 in x
0.258 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in x
0.258 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.258 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.258 * [taylor]: Taking taylor expansion of x in x
0.258 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.258 * [taylor]: Taking taylor expansion of y in x
0.258 * [taylor]: Taking taylor expansion of (* 0.5 (- (/ 1 (pow x 2)) (/ 1 y))) in x
0.258 * [taylor]: Taking taylor expansion of 0.5 in x
0.258 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in x
0.258 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.258 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.258 * [taylor]: Taking taylor expansion of x in x
0.258 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.258 * [taylor]: Taking taylor expansion of y in x
0.258 * [taylor]: Taking taylor expansion of 0.5 in y
0.258 * [taylor]: Taking taylor expansion of 0 in y
0.258 * [taylor]: Taking taylor expansion of (neg (* 0.5 (/ 1 y))) in y
0.258 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.258 * [taylor]: Taking taylor expansion of 0.5 in y
0.258 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.258 * [taylor]: Taking taylor expansion of y in y
0.259 * [taylor]: Taking taylor expansion of 0 in y
0.259 * [taylor]: Taking taylor expansion of 0 in y
0.260 * [approximate]: Taking taylor expansion of (* 0.5 (+ (/ 1 (pow x 2)) (/ 1 y))) in (x y) around 0
0.260 * [taylor]: Taking taylor expansion of (* 0.5 (+ (/ 1 (pow x 2)) (/ 1 y))) in y
0.260 * [taylor]: Taking taylor expansion of 0.5 in y
0.260 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in y
0.260 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.260 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.260 * [taylor]: Taking taylor expansion of x 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 (* 0.5 (+ (/ 1 (pow x 2)) (/ 1 y))) in x
0.260 * [taylor]: Taking taylor expansion of 0.5 in x
0.260 * [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 (* 0.5 (+ (/ 1 (pow x 2)) (/ 1 y))) in x
0.260 * [taylor]: Taking taylor expansion of 0.5 in x
0.260 * [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
0.261 * [taylor]: Taking taylor expansion of 0.5 in y
0.261 * [taylor]: Taking taylor expansion of 0 in y
0.261 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.261 * [taylor]: Taking taylor expansion of 0.5 in y
0.261 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.261 * [taylor]: Taking taylor expansion of y in y
0.261 * [taylor]: Taking taylor expansion of 0 in y
0.261 * [taylor]: Taking taylor expansion of 0 in y
0.262 * * * [progress]: simplifying candidates
0.262 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* 0.5 (- (* x x) y))
  (+ (log 0.5) (log (- (* x x) y)))
  (log (* 0.5 (- (* x x) y)))
  (exp (* 0.5 (- (* x x) y)))
  (* (* (* 0.5 0.5) 0.5) (* (* (- (* x x) y) (- (* x x) y)) (- (* x x) y)))
  (* (cbrt (* 0.5 (- (* x x) y))) (cbrt (* 0.5 (- (* x x) y))))
  (cbrt (* 0.5 (- (* x x) y)))
  (* (* (* 0.5 (- (* x x) y)) (* 0.5 (- (* x x) y))) (* 0.5 (- (* x x) y)))
  (sqrt (* 0.5 (- (* x x) y)))
  (sqrt (* 0.5 (- (* x x) y)))
  (* (sqrt 0.5) (sqrt (- (* x x) y)))
  (* (sqrt 0.5) (sqrt (- (* x x) y)))
  (* 0.5 (* x x))
  (* 0.5 (neg y))
  (* 0.5 (* x x))
  (* 0.5 (neg y))
  (* (* x x) 0.5)
  (* (neg y) 0.5)
  (* (* x x) 0.5)
  (* (neg y) 0.5)
  (* 0.5 (* (cbrt (- (* x x) y)) (cbrt (- (* x x) y))))
  (* 0.5 (sqrt (- (* x x) y)))
  (* 0.5 1)
  (* 0.5 (+ x (sqrt y)))
  (* (cbrt 0.5) (- (* x x) y))
  (* (sqrt 0.5) (- (* x x) y))
  (* 0.5 (- (* x x) y))
  (* 0.5 (- (pow (* x x) 3) (pow y 3)))
  (* 0.5 (- (* (* x x) (* x x)) (* y y)))
  (- (* 0.5 (pow x 2)) (* 0.5 y))
  (- (* 0.5 (pow x 2)) (* 0.5 y))
  (- (* 0.5 (pow x 2)) (* 0.5 y))
0.265 * * [simplify]: iteration  0 :  129  enodes  (cost  130 )
0.268 * * [simplify]: iteration  1 :  552  enodes  (cost  116 )
0.279 * * [simplify]: iteration  2 :  2739  enodes  (cost  115 )
0.328 * * [simplify]: iteration  3 :  5003  enodes  (cost  115 )
0.329 * [simplify]: Simplified to:
   (* 0.5 (- (pow x 2) y))
  (log (* 0.5 (- (* x x) y)))
  (log (* 0.5 (- (* x x) y)))
  (exp (* 0.5 (- (* x x) y)))
  (pow (* 0.5 (- (pow x 2) y)) 3)
  (* (cbrt (* 0.5 (- (* x x) y))) (cbrt (* 0.5 (- (* x x) y))))
  (cbrt (* 0.5 (- (* x x) y)))
  (pow (* 0.5 (- (pow x 2) y)) 3)
  (sqrt (* 0.5 (- (* x x) y)))
  (sqrt (* 0.5 (- (* x x) y)))
  (* (sqrt 0.5) (sqrt (- (* x x) y)))
  (* (sqrt 0.5) (sqrt (- (* x x) y)))
  (* 0.5 (* x x))
  (* 0.5 (neg y))
  (* 0.5 (* x x))
  (* 0.5 (neg y))
  (* 0.5 (* x x))
  (* 0.5 (neg y))
  (* 0.5 (* x x))
  (* 0.5 (neg y))
  (* 0.5 (* (cbrt (- (* x x) y)) (cbrt (- (* x x) y))))
  (* 0.5 (sqrt (- (* x x) y)))
  0.5
  (* 0.5 (+ x (sqrt y)))
  (* (cbrt 0.5) (- (* x x) y))
  (* (sqrt 0.5) (- (* x x) y))
  (* 0.5 (- (pow x 2) y))
  (* 0.5 (- (pow (* x x) 3) (pow y 3)))
  (* 0.5 (+ (neg (* y y)) (pow x 4)))
  (* 0.5 (- (pow x 2) y))
  (* 0.5 (- (pow x 2) y))
  (* 0.5 (- (pow x 2) y))
0.329 * * * [progress]: adding candidates to table
0.356 * [progress]: [Phase 3 of 3] Extracting.
0.359 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* 0.5 (- (* x x) y))
0.359 * * [simplify]: iteration  0 :  7  enodes  (cost  3 )
0.360 * * [simplify]: iteration  1 :  7  enodes  (cost  3 )
0.360 * [simplify]: Simplified to:
   (* 0.5 (- (* x x) y))
1.049 * [regime-testing]: End program error score: 0.02924201657652313