27.775 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.015 * * * [progress]: [2/2] Setting up program.
0.017 * [progress]: [Phase 2 of 3] Improving.
0.017 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y)))
0.019 * * [simplify]: iteration  0 :  18  enodes  (cost  9 )
0.021 * * [simplify]: iteration  1 :  36  enodes  (cost  9 )
0.022 * * [simplify]: iteration  2 :  68  enodes  (cost  9 )
0.024 * * [simplify]: iteration  3 :  117  enodes  (cost  9 )
0.026 * * [simplify]: iteration  4 :  174  enodes  (cost  9 )
0.029 * * [simplify]: iteration  5 :  195  enodes  (cost  9 )
0.032 * * [simplify]: iteration  6 :  197  enodes  (cost  9 )
0.034 * * [simplify]: iteration  7 :  197  enodes  (cost  9 )
0.034 * [simplify]: Simplified to:
   (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y)))
0.035 * * [progress]: iteration 1 / 4
0.035 * * * [progress]: picking best candidate
0.036 * * * * [pick]: Picked  #<alt (λ (x y) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))>
0.036 * * * [progress]: localizing error
0.043 * * * [progress]: generating rewritten candidates
0.043 * * * * [progress]: [ 1 / 2 ] rewriting at (2)
0.051 * * * * [progress]: [ 2 / 2 ] rewriting at (2 1)
0.055 * * * [progress]: generating series expansions
0.055 * * * * [progress]: [ 1 / 2 ] generating series at (2)
0.055 * [approximate]: Taking taylor expansion of (/ (- (pow x 2) (* 4.0 (pow y 2))) (+ (pow x 2) (* 4.0 (pow y 2)))) in (x y) around 0
0.055 * [taylor]: Taking taylor expansion of (/ (- (pow x 2) (* 4.0 (pow y 2))) (+ (pow x 2) (* 4.0 (pow y 2)))) in y
0.056 * [taylor]: Taking taylor expansion of (- (pow x 2) (* 4.0 (pow y 2))) in y
0.056 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.056 * [taylor]: Taking taylor expansion of x in y
0.056 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in y
0.056 * [taylor]: Taking taylor expansion of 4.0 in y
0.056 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.056 * [taylor]: Taking taylor expansion of y in y
0.056 * [taylor]: Taking taylor expansion of (+ (pow x 2) (* 4.0 (pow y 2))) in y
0.056 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.056 * [taylor]: Taking taylor expansion of x in y
0.056 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in y
0.056 * [taylor]: Taking taylor expansion of 4.0 in y
0.056 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.056 * [taylor]: Taking taylor expansion of y in y
0.056 * [taylor]: Taking taylor expansion of (/ (- (pow x 2) (* 4.0 (pow y 2))) (+ (pow x 2) (* 4.0 (pow y 2)))) in x
0.056 * [taylor]: Taking taylor expansion of (- (pow x 2) (* 4.0 (pow y 2))) in x
0.056 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.056 * [taylor]: Taking taylor expansion of x in x
0.056 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in x
0.056 * [taylor]: Taking taylor expansion of 4.0 in x
0.056 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.056 * [taylor]: Taking taylor expansion of y in x
0.056 * [taylor]: Taking taylor expansion of (+ (pow x 2) (* 4.0 (pow y 2))) in x
0.056 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.056 * [taylor]: Taking taylor expansion of x in x
0.056 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in x
0.056 * [taylor]: Taking taylor expansion of 4.0 in x
0.056 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.056 * [taylor]: Taking taylor expansion of y in x
0.057 * [taylor]: Taking taylor expansion of (/ (- (pow x 2) (* 4.0 (pow y 2))) (+ (pow x 2) (* 4.0 (pow y 2)))) in x
0.057 * [taylor]: Taking taylor expansion of (- (pow x 2) (* 4.0 (pow y 2))) in x
0.057 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.057 * [taylor]: Taking taylor expansion of x in x
0.057 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in x
0.057 * [taylor]: Taking taylor expansion of 4.0 in x
0.057 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.057 * [taylor]: Taking taylor expansion of y in x
0.057 * [taylor]: Taking taylor expansion of (+ (pow x 2) (* 4.0 (pow y 2))) in x
0.057 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.057 * [taylor]: Taking taylor expansion of x in x
0.057 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in x
0.057 * [taylor]: Taking taylor expansion of 4.0 in x
0.057 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.057 * [taylor]: Taking taylor expansion of y in x
0.058 * [taylor]: Taking taylor expansion of -1.0 in y
0.059 * [taylor]: Taking taylor expansion of 0 in y
0.062 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow y 2))) in y
0.062 * [taylor]: Taking taylor expansion of 0.5 in y
0.062 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.062 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.062 * [taylor]: Taking taylor expansion of y in y
0.073 * [taylor]: Taking taylor expansion of 0 in y
0.073 * [approximate]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2))))) in (x y) around 0
0.073 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2))))) in y
0.073 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in y
0.073 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.073 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.073 * [taylor]: Taking taylor expansion of x in y
0.073 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in y
0.074 * [taylor]: Taking taylor expansion of 4.0 in y
0.074 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.074 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.074 * [taylor]: Taking taylor expansion of y in y
0.074 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in y
0.074 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.074 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.074 * [taylor]: Taking taylor expansion of x in y
0.074 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in y
0.074 * [taylor]: Taking taylor expansion of 4.0 in y
0.074 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.074 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.074 * [taylor]: Taking taylor expansion of y in y
0.077 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2))))) in x
0.077 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.077 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.077 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.077 * [taylor]: Taking taylor expansion of x in x
0.077 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.077 * [taylor]: Taking taylor expansion of 4.0 in x
0.077 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.077 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.077 * [taylor]: Taking taylor expansion of y in x
0.077 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.077 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.077 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.077 * [taylor]: Taking taylor expansion of x in x
0.078 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.078 * [taylor]: Taking taylor expansion of 4.0 in x
0.078 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.078 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.078 * [taylor]: Taking taylor expansion of y in x
0.079 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2))))) in x
0.079 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.079 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.079 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.079 * [taylor]: Taking taylor expansion of x in x
0.079 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.079 * [taylor]: Taking taylor expansion of 4.0 in x
0.079 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.079 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.079 * [taylor]: Taking taylor expansion of y in x
0.080 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.080 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.080 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.080 * [taylor]: Taking taylor expansion of x in x
0.080 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.080 * [taylor]: Taking taylor expansion of 4.0 in x
0.080 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.080 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.080 * [taylor]: Taking taylor expansion of y in x
0.081 * [taylor]: Taking taylor expansion of 1 in y
0.083 * [taylor]: Taking taylor expansion of 0 in y
0.086 * [taylor]: Taking taylor expansion of (neg (* 8.0 (/ 1 (pow y 2)))) in y
0.086 * [taylor]: Taking taylor expansion of (* 8.0 (/ 1 (pow y 2))) in y
0.086 * [taylor]: Taking taylor expansion of 8.0 in y
0.086 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.086 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.086 * [taylor]: Taking taylor expansion of y in y
0.093 * [taylor]: Taking taylor expansion of 0 in y
0.094 * [approximate]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2))))) in (x y) around 0
0.094 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2))))) in y
0.094 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in y
0.094 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.094 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.094 * [taylor]: Taking taylor expansion of x in y
0.094 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in y
0.094 * [taylor]: Taking taylor expansion of 4.0 in y
0.094 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.094 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.094 * [taylor]: Taking taylor expansion of y in y
0.094 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in y
0.094 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.094 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.095 * [taylor]: Taking taylor expansion of x in y
0.095 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in y
0.095 * [taylor]: Taking taylor expansion of 4.0 in y
0.095 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.095 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.095 * [taylor]: Taking taylor expansion of y in y
0.097 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2))))) in x
0.097 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.097 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.097 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.097 * [taylor]: Taking taylor expansion of x in x
0.098 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.098 * [taylor]: Taking taylor expansion of 4.0 in x
0.098 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.098 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.098 * [taylor]: Taking taylor expansion of y in x
0.098 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.098 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.098 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.098 * [taylor]: Taking taylor expansion of x in x
0.098 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.098 * [taylor]: Taking taylor expansion of 4.0 in x
0.098 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.098 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.098 * [taylor]: Taking taylor expansion of y in x
0.099 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2))))) in x
0.099 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.099 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.099 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.099 * [taylor]: Taking taylor expansion of x in x
0.100 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.100 * [taylor]: Taking taylor expansion of 4.0 in x
0.100 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.100 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.100 * [taylor]: Taking taylor expansion of y in x
0.100 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.100 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.100 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.100 * [taylor]: Taking taylor expansion of x in x
0.100 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.100 * [taylor]: Taking taylor expansion of 4.0 in x
0.100 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.100 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.100 * [taylor]: Taking taylor expansion of y in x
0.101 * [taylor]: Taking taylor expansion of 1 in y
0.103 * [taylor]: Taking taylor expansion of 0 in y
0.106 * [taylor]: Taking taylor expansion of (neg (* 8.0 (/ 1 (pow y 2)))) in y
0.106 * [taylor]: Taking taylor expansion of (* 8.0 (/ 1 (pow y 2))) in y
0.106 * [taylor]: Taking taylor expansion of 8.0 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
0.114 * [taylor]: Taking taylor expansion of 0 in y
0.114 * * * * [progress]: [ 2 / 2 ] generating series at (2 1)
0.114 * [approximate]: Taking taylor expansion of (- (pow x 2) (* 4.0 (pow y 2))) in (x y) around 0
0.114 * [taylor]: Taking taylor expansion of (- (pow x 2) (* 4.0 (pow y 2))) in y
0.114 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.114 * [taylor]: Taking taylor expansion of x in y
0.114 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in y
0.114 * [taylor]: Taking taylor expansion of 4.0 in y
0.114 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.114 * [taylor]: Taking taylor expansion of y in y
0.114 * [taylor]: Taking taylor expansion of (- (pow x 2) (* 4.0 (pow y 2))) in x
0.114 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.114 * [taylor]: Taking taylor expansion of x in x
0.114 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in x
0.114 * [taylor]: Taking taylor expansion of 4.0 in x
0.114 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.114 * [taylor]: Taking taylor expansion of y in x
0.114 * [taylor]: Taking taylor expansion of (- (pow x 2) (* 4.0 (pow y 2))) in x
0.114 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.114 * [taylor]: Taking taylor expansion of x in x
0.114 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in x
0.114 * [taylor]: Taking taylor expansion of 4.0 in x
0.114 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.114 * [taylor]: Taking taylor expansion of y in x
0.115 * [taylor]: Taking taylor expansion of (neg (* 4.0 (pow y 2))) in y
0.115 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in y
0.115 * [taylor]: Taking taylor expansion of 4.0 in y
0.115 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.115 * [taylor]: Taking taylor expansion of y in y
0.115 * [taylor]: Taking taylor expansion of 0 in y
0.117 * [taylor]: Taking taylor expansion of 1 in y
0.120 * [taylor]: Taking taylor expansion of 0 in y
0.123 * [taylor]: Taking taylor expansion of 0 in y
0.124 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in (x y) around 0
0.124 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in y
0.124 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.124 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.124 * [taylor]: Taking taylor expansion of x in y
0.124 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in y
0.124 * [taylor]: Taking taylor expansion of 4.0 in y
0.124 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.124 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.124 * [taylor]: Taking taylor expansion of y in y
0.124 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.125 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.125 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.125 * [taylor]: Taking taylor expansion of x in x
0.125 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.125 * [taylor]: Taking taylor expansion of 4.0 in x
0.125 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.125 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.125 * [taylor]: Taking taylor expansion of y in x
0.125 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.125 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.125 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.126 * [taylor]: Taking taylor expansion of x in x
0.126 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.126 * [taylor]: Taking taylor expansion of 4.0 in x
0.126 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.126 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.126 * [taylor]: Taking taylor expansion of y in x
0.126 * [taylor]: Taking taylor expansion of 1 in y
0.127 * [taylor]: Taking taylor expansion of 0 in y
0.129 * [taylor]: Taking taylor expansion of (neg (* 4.0 (/ 1 (pow y 2)))) in y
0.129 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in y
0.129 * [taylor]: Taking taylor expansion of 4.0 in y
0.129 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.129 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.129 * [taylor]: Taking taylor expansion of y in y
0.132 * [taylor]: Taking taylor expansion of 0 in y
0.136 * [taylor]: Taking taylor expansion of 0 in y
0.138 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in (x y) around 0
0.138 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in y
0.138 * [taylor]: Taking taylor expansion of (/ 1 (pow x 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 (* 4.0 (/ 1 (pow y 2))) in y
0.138 * [taylor]: Taking taylor expansion of 4.0 in y
0.138 * [taylor]: Taking taylor expansion of (/ 1 (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 (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.138 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.138 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.139 * [taylor]: Taking taylor expansion of x in x
0.139 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.139 * [taylor]: Taking taylor expansion of 4.0 in x
0.139 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.139 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.139 * [taylor]: Taking taylor expansion of y in x
0.139 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.139 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.139 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.139 * [taylor]: Taking taylor expansion of x in x
0.140 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.140 * [taylor]: Taking taylor expansion of 4.0 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
0.141 * [taylor]: Taking taylor expansion of 0 in y
0.142 * [taylor]: Taking taylor expansion of (neg (* 4.0 (/ 1 (pow y 2)))) in y
0.142 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in y
0.142 * [taylor]: Taking taylor expansion of 4.0 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
0.145 * [taylor]: Taking taylor expansion of 0 in y
0.153 * [taylor]: Taking taylor expansion of 0 in y
0.156 * * * [progress]: simplifying candidates
0.157 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (log (- (* x x) (* (* y 4.0) y))) (log (+ (* x x) (* (* y 4.0) y))))
  (log (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (exp (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (/ (* (* (- (* x x) (* (* y 4.0) y)) (- (* x x) (* (* y 4.0) y))) (- (* x x) (* (* y 4.0) y))) (* (* (+ (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))) (+ (* x x) (* (* y 4.0) y))))
  (* (cbrt (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y)))) (cbrt (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y)))))
  (cbrt (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (* (* (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y)))) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (sqrt (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (sqrt (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (neg (- (* x x) (* (* y 4.0) y)))
  (neg (+ (* x x) (* (* y 4.0) y)))
  (/ (* x x) (+ (* x x) (* (* y 4.0) y)))
  (/ (* (* y 4.0) y) (+ (* x x) (* (* y 4.0) y)))
  (/ (* (cbrt (- (* x x) (* (* y 4.0) y))) (cbrt (- (* x x) (* (* y 4.0) y)))) (* (cbrt (+ (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y)))))
  (/ (cbrt (- (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y))))
  (/ (* (cbrt (- (* x x) (* (* y 4.0) y))) (cbrt (- (* x x) (* (* y 4.0) y)))) (sqrt (+ (* x x) (* (* y 4.0) y))))
  (/ (cbrt (- (* x x) (* (* y 4.0) y))) (sqrt (+ (* x x) (* (* y 4.0) y))))
  (/ (* (cbrt (- (* x x) (* (* y 4.0) y))) (cbrt (- (* x x) (* (* y 4.0) y)))) 1)
  (/ (cbrt (- (* x x) (* (* y 4.0) y))) (+ (* x x) (* (* y 4.0) y)))
  (/ (sqrt (- (* x x) (* (* y 4.0) y))) (* (cbrt (+ (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y)))))
  (/ (sqrt (- (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y))))
  (/ (sqrt (- (* x x) (* (* y 4.0) y))) (sqrt (+ (* x x) (* (* y 4.0) y))))
  (/ (sqrt (- (* x x) (* (* y 4.0) y))) (sqrt (+ (* x x) (* (* y 4.0) y))))
  (/ (sqrt (- (* x x) (* (* y 4.0) y))) 1)
  (/ (sqrt (- (* x x) (* (* y 4.0) y))) (+ (* x x) (* (* y 4.0) y)))
  (/ 1 (* (cbrt (+ (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y)))))
  (/ (- (* x x) (* (* y 4.0) y)) (cbrt (+ (* x x) (* (* y 4.0) y))))
  (/ 1 (sqrt (+ (* x x) (* (* y 4.0) y))))
  (/ (- (* x x) (* (* y 4.0) y)) (sqrt (+ (* x x) (* (* y 4.0) y))))
  (/ 1 1)
  (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y)))
  (/ 1 (+ (* x x) (* (* y 4.0) y)))
  (/ (+ (* x x) (* (* y 4.0) y)) (- (* x x) (* (* y 4.0) y)))
  (/ (- (* x x) (* (* y 4.0) y)) (* (cbrt (+ (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y)))))
  (/ (- (* x x) (* (* y 4.0) y)) (sqrt (+ (* x x) (* (* y 4.0) y))))
  (/ (- (* x x) (* (* y 4.0) y)) 1)
  (/ (+ (* x x) (* (* y 4.0) y)) (cbrt (- (* x x) (* (* y 4.0) y))))
  (/ (+ (* x x) (* (* y 4.0) y)) (sqrt (- (* x x) (* (* y 4.0) y))))
  (/ (+ (* x x) (* (* y 4.0) y)) (- (* x x) (* (* y 4.0) y)))
  (/ (- (* x x) (* (* y 4.0) y)) (+ (pow (* x x) 3) (pow (* (* y 4.0) y) 3)))
  (/ (- (* x x) (* (* y 4.0) y)) (- (* (* x x) (* x x)) (* (* (* y 4.0) y) (* (* y 4.0) y))))
  (* (+ (* x x) (* (* y 4.0) y)) (+ (* (* x x) (* x x)) (+ (* (* (* y 4.0) y) (* (* y 4.0) y)) (* (* x x) (* (* y 4.0) y)))))
  (* (+ (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y)))
  (/ (exp (* x x)) (exp (* (* y 4.0) y)))
  (log (- (* x x) (* (* y 4.0) y)))
  (exp (- (* x x) (* (* y 4.0) y)))
  (* (cbrt (- (* x x) (* (* y 4.0) y))) (cbrt (- (* x x) (* (* y 4.0) y))))
  (cbrt (- (* x x) (* (* y 4.0) y)))
  (* (* (- (* x x) (* (* y 4.0) y)) (- (* x x) (* (* y 4.0) y))) (- (* x x) (* (* y 4.0) y)))
  (sqrt (- (* x x) (* (* y 4.0) y)))
  (sqrt (- (* x x) (* (* y 4.0) y)))
  (- (pow (* x x) 3) (pow (* (* y 4.0) y) 3))
  (+ (* (* x x) (* x x)) (+ (* (* (* y 4.0) y) (* (* y 4.0) y)) (* (* x x) (* (* y 4.0) y))))
  (neg (* (* y 4.0) y))
  (- (* (* x x) (* x x)) (* (* (* y 4.0) y) (* (* y 4.0) y)))
  (+ (* x x) (* (* y 4.0) y))
  (neg (* (* y 4.0) y))
  -1.0
  1
  1
  (- (pow x 2) (* 4.0 (pow y 2)))
  (- (pow x 2) (* 4.0 (pow y 2)))
  (- (pow x 2) (* 4.0 (pow y 2)))
0.161 * * [simplify]: iteration  0 :  221  enodes  (cost  583 )
0.166 * * [simplify]: iteration  1 :  964  enodes  (cost  535 )
0.185 * * [simplify]: iteration  2 :  4800  enodes  (cost  534 )
0.333 * * [simplify]: iteration  3 :  5002  enodes  (cost  534 )
0.338 * [simplify]: Simplified to:
   (log (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (log (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (exp (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (pow (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))) 3)
  (* (cbrt (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y)))) (cbrt (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y)))))
  (cbrt (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (pow (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))) 3)
  (sqrt (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (sqrt (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (neg (- (* x x) (* (* y 4.0) y)))
  (neg (+ (* x x) (* (* y 4.0) y)))
  (/ (* x x) (+ (* x x) (* (* y 4.0) y)))
  (/ (* (* y 4.0) y) (+ (* x x) (* (* y 4.0) y)))
  (/ (* (cbrt (- (* x x) (* (* y 4.0) y))) (cbrt (- (* x x) (* (* y 4.0) y)))) (* (cbrt (+ (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y)))))
  (/ (cbrt (- (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y))))
  (/ (* (cbrt (- (* x x) (* (* y 4.0) y))) (cbrt (- (* x x) (* (* y 4.0) y)))) (sqrt (+ (* x x) (* (* y 4.0) y))))
  (/ (cbrt (- (* x x) (* (* y 4.0) y))) (sqrt (+ (* x x) (* (* y 4.0) y))))
  (* (cbrt (- (* x x) (* (* y 4.0) y))) (cbrt (- (* x x) (* (* y 4.0) y))))
  (/ (cbrt (- (* x x) (* (* y 4.0) y))) (+ (* x x) (* (* y 4.0) y)))
  (/ (sqrt (- (* x x) (* (* y 4.0) y))) (* (cbrt (+ (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y)))))
  (/ (sqrt (- (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y))))
  (/ (sqrt (- (* x x) (* (* y 4.0) y))) (sqrt (+ (* x x) (* (* y 4.0) y))))
  (/ (sqrt (- (* x x) (* (* y 4.0) y))) (sqrt (+ (* x x) (* (* y 4.0) y))))
  (sqrt (- (* x x) (* (* y 4.0) y)))
  (/ (sqrt (- (* x x) (* (* y 4.0) y))) (+ (* x x) (* (* y 4.0) y)))
  (/ 1 (* (cbrt (+ (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y)))))
  (/ (- (* x x) (* (* y 4.0) y)) (cbrt (+ (* x x) (* (* y 4.0) y))))
  (/ 1 (sqrt (+ (* x x) (* (* y 4.0) y))))
  (/ (- (* x x) (* (* y 4.0) y)) (sqrt (+ (* x x) (* (* y 4.0) y))))
  1
  (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y)))
  (/ 1 (+ (* x x) (* (* y 4.0) y)))
  (/ (+ (* x x) (* (* y 4.0) y)) (- (* x x) (* (* y 4.0) y)))
  (/ (- (* x x) (* (* y 4.0) y)) (* (cbrt (+ (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y)))))
  (/ (- (* x x) (* (* y 4.0) y)) (sqrt (+ (* x x) (* (* y 4.0) y))))
  (- (* x x) (* (* y 4.0) y))
  (/ (+ (* x x) (* (* y 4.0) y)) (cbrt (- (* x x) (* (* y 4.0) y))))
  (/ (+ (* x x) (* (* y 4.0) y)) (sqrt (- (* x x) (* (* y 4.0) y))))
  (/ (+ (* x x) (* (* y 4.0) y)) (- (* x x) (* (* y 4.0) y)))
  (/ (- (* x x) (* (* y 4.0) y)) (+ (pow (* x x) 3) (pow (* (* y 4.0) y) 3)))
  (/ (- (* x x) (* (* y 4.0) y)) (+ (neg (* (* (* y 4.0) y) (* (* y 4.0) y))) (pow x 4)))
  (* (+ (* (* (* y 4.0) y) (+ (* (* y 4.0) y) (pow x 2))) (* (* x x) (* x x))) (+ (* x x) (* (* y 4.0) y)))
  (* (+ (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y)))
  (exp (- (* x x) (* (* y 4.0) y)))
  (log (- (* x x) (* (* y 4.0) y)))
  (exp (- (* x x) (* (* y 4.0) y)))
  (* (cbrt (- (* x x) (* (* y 4.0) y))) (cbrt (- (* x x) (* (* y 4.0) y))))
  (cbrt (- (* x x) (* (* y 4.0) y)))
  (pow (- (* x x) (* (* y 4.0) y)) 3)
  (sqrt (- (* x x) (* (* y 4.0) y)))
  (sqrt (- (* x x) (* (* y 4.0) y)))
  (- (pow (* x x) 3) (pow (* (* y 4.0) y) 3))
  (+ (* (* (* y 4.0) y) (+ (* (* y 4.0) y) (pow x 2))) (* (* x x) (* x x)))
  (neg (* (* y 4.0) y))
  (+ (neg (* (* (* y 4.0) y) (* (* y 4.0) y))) (pow x 4))
  (+ (* x x) (* (* y 4.0) y))
  (neg (* (* y 4.0) y))
  -1.0
  1
  1
  (- (* x x) (* (* y 4.0) y))
  (- (* x x) (* (* y 4.0) y))
  (- (* x x) (* (* y 4.0) y))
0.339 * * * [progress]: adding candidates to table
0.437 * * [progress]: iteration 2 / 4
0.437 * * * [progress]: picking best candidate
0.439 * * * * [pick]: Picked  #<alt (λ (x y) 1)>
0.439 * * * [progress]: localizing error
0.439 * * * [progress]: generating rewritten candidates
0.439 * * * [progress]: generating series expansions
0.439 * * * [progress]: simplifying candidates
0.439 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.441 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.441 * [simplify]: Simplified to:
   
0.441 * * * [progress]: adding candidates to table
0.442 * * [progress]: iteration 3 / 4
0.442 * * * [progress]: picking best candidate
0.442 * * * * [pick]: Picked  #<alt (λ (x y) -1.0)>
0.442 * * * [progress]: localizing error
0.443 * * * [progress]: generating rewritten candidates
0.443 * * * [progress]: generating series expansions
0.443 * * * [progress]: simplifying candidates
0.443 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.445 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.445 * [simplify]: Simplified to:
   
0.445 * * * [progress]: adding candidates to table
0.445 * [progress]: [Phase 3 of 3] Extracting.
0.445 * * [regime]: Finding splitpoints for: (#<alt (λ (x y) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))> #<alt (λ (x y) 1)> #<alt (λ (x y) -1.0)>)
0.446 * * * [regime-changes]: Trying 5 branch expressions: ((* (* y 4.0) y) (* x x) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))) y x)
0.446 * * * * [regimes]: Trying to branch on (* (* y 4.0) y) from (#<alt (λ (x y) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))> #<alt (λ (x y) 1)> #<alt (λ (x y) -1.0)>)
0.495 * * * * [regimes]: Trying to branch on (* x x) from (#<alt (λ (x y) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))> #<alt (λ (x y) 1)> #<alt (λ (x y) -1.0)>)
0.520 * * * * [regimes]: Trying to branch on (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))) from (#<alt (λ (x y) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))> #<alt (λ (x y) 1)> #<alt (λ (x y) -1.0)>)
0.532 * * * * [regimes]: Trying to branch on y from (#<alt (λ (x y) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))> #<alt (λ (x y) 1)> #<alt (λ (x y) -1.0)>)
0.569 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x y) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))> #<alt (λ (x y) 1)> #<alt (λ (x y) -1.0)>)
0.603 * * * [regime]: Found split indices: #<option (#s(si 2 81) #s(si 0 125) #s(si 2 134) #s(si 0 164) #s(si 1 255))>
0.603 * [binary-search]: Improving bounds with binary search for (* x x) and (#<alt (λ (x y) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))> #<alt (λ (x y) 1)> #<alt (λ (x y) -1.0)>)
0.731 * [regimes]: Found splitpoints: (#s(sp 2 (* x x) 1.0192473399437176e-206) #s(sp 0 (* x x) 1.4925670201056794e+37) #s(sp 2 (* x x) 9.144082202807282e+79) #s(sp 0 (* x x) 3.013442271263725e+202) #s(sp 1 (* x x) +nan.0)) , with alts (#<alt (λ (x y) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))> #<alt (λ (x y) 1)> #<alt (λ (x y) -1.0)>)
0.732 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (if (<= (* x x) 1.0192473399437176e-206) -1.0 (if (<= (* x x) 1.4925670201056794e+37) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))) (if (<= (* x x) 9.144082202807282e+79) -1.0 (if (<= (* x x) 3.013442271263725e+202) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))) 1))))
0.732 * * [simplify]: iteration  0 :  28  enodes  (cost  22 )
0.733 * * [simplify]: iteration  1 :  28  enodes  (cost  22 )
0.733 * [simplify]: Simplified to:
   (if (<= (* x x) 1.0192473399437176e-206) -1.0 (if (<= (* x x) 1.4925670201056794e+37) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))) (if (<= (* x x) 9.144082202807282e+79) -1.0 (if (<= (* x x) 3.013442271263725e+202) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))) 1))))
1.219 * [regime-testing]: Baseline error score: 32.11075099178597
1.220 * [regime-testing]: Oracle error score: 0.3683587856397178
1.221 * [regime-testing]: End program error score: 12.953227144857369
1.258 * [regime-testing]: Target error score: 30.847086869915657