7.475 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.016 * * * [progress]: [2/2] Setting up program.
0.018 * [progress]: [Phase 2 of 3] Improving.
0.018 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (+ (- (* x (- y 1.0)) (* y 0.5)) 0.918938533204673)
0.020 * * [simplify]: iteration  0 :  19  enodes  (cost  5 )
0.021 * * [simplify]: iteration  1 :  42  enodes  (cost  5 )
0.023 * * [simplify]: iteration  2 :  87  enodes  (cost  5 )
0.025 * * [simplify]: iteration  3 :  175  enodes  (cost  5 )
0.027 * * [simplify]: iteration  4 :  310  enodes  (cost  5 )
0.031 * * [simplify]: iteration  5 :  500  enodes  (cost  5 )
0.035 * * [simplify]: iteration  6 :  720  enodes  (cost  5 )
0.042 * * [simplify]: iteration  7 :  948  enodes  (cost  5 )
0.049 * * [simplify]: iteration  8 :  1148  enodes  (cost  5 )
0.056 * * [simplify]: iteration  9 :  1148  enodes  (cost  5 )
0.056 * [simplify]: Simplified to:
   (+ (- (* x (- y 1.0)) (* y 0.5)) 0.918938533204673)
0.056 * * [progress]: iteration 1 / 4
0.056 * * * [progress]: picking best candidate
0.058 * * * * [pick]: Picked  #<alt (λ (x y) (+ (- (* x (- y 1.0)) (* y 0.5)) 0.918938533204673))>
0.058 * * * [progress]: localizing error
0.065 * * * [progress]: generating rewritten candidates
0.065 * * * * [progress]: [ 1 / 2 ] rewriting at (2 1 1)
0.075 * * * * [progress]: [ 2 / 2 ] rewriting at (2 1)
0.082 * * * [progress]: generating series expansions
0.082 * * * * [progress]: [ 1 / 2 ] generating series at (2 1 1)
0.082 * [approximate]: Taking taylor expansion of (* x (- y 1.0)) in (x y) around 0
0.082 * [taylor]: Taking taylor expansion of (* x (- y 1.0)) in y
0.082 * [taylor]: Taking taylor expansion of x in y
0.082 * [taylor]: Taking taylor expansion of (- y 1.0) in y
0.082 * [taylor]: Taking taylor expansion of y in y
0.082 * [taylor]: Taking taylor expansion of 1.0 in y
0.082 * [taylor]: Taking taylor expansion of (* x (- y 1.0)) in x
0.082 * [taylor]: Taking taylor expansion of x in x
0.082 * [taylor]: Taking taylor expansion of (- y 1.0) in x
0.082 * [taylor]: Taking taylor expansion of y in x
0.082 * [taylor]: Taking taylor expansion of 1.0 in x
0.082 * [taylor]: Taking taylor expansion of (* x (- y 1.0)) in x
0.082 * [taylor]: Taking taylor expansion of x in x
0.082 * [taylor]: Taking taylor expansion of (- y 1.0) in x
0.082 * [taylor]: Taking taylor expansion of y in x
0.082 * [taylor]: Taking taylor expansion of 1.0 in x
0.083 * [taylor]: Taking taylor expansion of 0 in y
0.084 * [taylor]: Taking taylor expansion of (- y 1.0) in y
0.084 * [taylor]: Taking taylor expansion of y in y
0.084 * [taylor]: Taking taylor expansion of 1.0 in y
0.086 * [taylor]: Taking taylor expansion of 0 in y
0.088 * [taylor]: Taking taylor expansion of 0 in y
0.090 * [taylor]: Taking taylor expansion of 0 in y
0.090 * [approximate]: Taking taylor expansion of (/ (- (/ 1 y) 1.0) x) in (x y) around 0
0.090 * [taylor]: Taking taylor expansion of (/ (- (/ 1 y) 1.0) x) in y
0.090 * [taylor]: Taking taylor expansion of (- (/ 1 y) 1.0) in y
0.090 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.090 * [taylor]: Taking taylor expansion of y in y
0.090 * [taylor]: Taking taylor expansion of 1.0 in y
0.090 * [taylor]: Taking taylor expansion of x in y
0.091 * [taylor]: Taking taylor expansion of (/ (- (/ 1 y) 1.0) x) in x
0.091 * [taylor]: Taking taylor expansion of (- (/ 1 y) 1.0) in x
0.091 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.091 * [taylor]: Taking taylor expansion of y in x
0.091 * [taylor]: Taking taylor expansion of 1.0 in x
0.091 * [taylor]: Taking taylor expansion of x in x
0.091 * [taylor]: Taking taylor expansion of (/ (- (/ 1 y) 1.0) x) in x
0.091 * [taylor]: Taking taylor expansion of (- (/ 1 y) 1.0) in x
0.092 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.092 * [taylor]: Taking taylor expansion of y in x
0.092 * [taylor]: Taking taylor expansion of 1.0 in x
0.092 * [taylor]: Taking taylor expansion of x in x
0.092 * [taylor]: Taking taylor expansion of (- (/ 1 y) 1.0) in y
0.092 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.092 * [taylor]: Taking taylor expansion of y in y
0.093 * [taylor]: Taking taylor expansion of 1.0 in y
0.094 * [taylor]: Taking taylor expansion of 0 in y
0.097 * [taylor]: Taking taylor expansion of 0 in y
0.100 * [taylor]: Taking taylor expansion of 0 in y
0.103 * [taylor]: Taking taylor expansion of 0 in y
0.103 * [approximate]: Taking taylor expansion of (/ (+ (/ 1 y) 1.0) x) in (x y) around 0
0.103 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 y) 1.0) x) in y
0.103 * [taylor]: Taking taylor expansion of (+ (/ 1 y) 1.0) in y
0.103 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.103 * [taylor]: Taking taylor expansion of y in y
0.104 * [taylor]: Taking taylor expansion of 1.0 in y
0.104 * [taylor]: Taking taylor expansion of x in y
0.104 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 y) 1.0) x) in x
0.104 * [taylor]: Taking taylor expansion of (+ (/ 1 y) 1.0) in x
0.104 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.104 * [taylor]: Taking taylor expansion of y in x
0.104 * [taylor]: Taking taylor expansion of 1.0 in x
0.104 * [taylor]: Taking taylor expansion of x in x
0.104 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 y) 1.0) x) in x
0.104 * [taylor]: Taking taylor expansion of (+ (/ 1 y) 1.0) in x
0.104 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.104 * [taylor]: Taking taylor expansion of y in x
0.104 * [taylor]: Taking taylor expansion of 1.0 in x
0.104 * [taylor]: Taking taylor expansion of x in x
0.104 * [taylor]: Taking taylor expansion of (+ (/ 1 y) 1.0) in y
0.104 * [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 1.0 in y
0.106 * [taylor]: Taking taylor expansion of 0 in y
0.108 * [taylor]: Taking taylor expansion of 0 in y
0.110 * [taylor]: Taking taylor expansion of 0 in y
0.113 * [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 (- (* x y) (+ (* 1.0 x) (* 0.5 y))) in (x y) around 0
0.114 * [taylor]: Taking taylor expansion of (- (* x y) (+ (* 1.0 x) (* 0.5 y))) in y
0.114 * [taylor]: Taking taylor expansion of (* x y) in y
0.114 * [taylor]: Taking taylor expansion of x in y
0.114 * [taylor]: Taking taylor expansion of y in y
0.114 * [taylor]: Taking taylor expansion of (+ (* 1.0 x) (* 0.5 y)) in y
0.114 * [taylor]: Taking taylor expansion of (* 1.0 x) in y
0.114 * [taylor]: Taking taylor expansion of 1.0 in y
0.114 * [taylor]: Taking taylor expansion of x in y
0.114 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.114 * [taylor]: Taking taylor expansion of 0.5 in y
0.114 * [taylor]: Taking taylor expansion of y in y
0.114 * [taylor]: Taking taylor expansion of (- (* x y) (+ (* 1.0 x) (* 0.5 y))) in x
0.114 * [taylor]: Taking taylor expansion of (* x y) in x
0.114 * [taylor]: Taking taylor expansion of x in x
0.114 * [taylor]: Taking taylor expansion of y in x
0.114 * [taylor]: Taking taylor expansion of (+ (* 1.0 x) (* 0.5 y)) in x
0.114 * [taylor]: Taking taylor expansion of (* 1.0 x) in x
0.114 * [taylor]: Taking taylor expansion of 1.0 in x
0.114 * [taylor]: Taking taylor expansion of x in x
0.114 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.114 * [taylor]: Taking taylor expansion of 0.5 in x
0.114 * [taylor]: Taking taylor expansion of y in x
0.114 * [taylor]: Taking taylor expansion of (- (* x y) (+ (* 1.0 x) (* 0.5 y))) in x
0.114 * [taylor]: Taking taylor expansion of (* x y) in x
0.114 * [taylor]: Taking taylor expansion of x in x
0.114 * [taylor]: Taking taylor expansion of y in x
0.114 * [taylor]: Taking taylor expansion of (+ (* 1.0 x) (* 0.5 y)) in x
0.114 * [taylor]: Taking taylor expansion of (* 1.0 x) in x
0.114 * [taylor]: Taking taylor expansion of 1.0 in x
0.114 * [taylor]: Taking taylor expansion of x in x
0.114 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.114 * [taylor]: Taking taylor expansion of 0.5 in x
0.114 * [taylor]: Taking taylor expansion of y in x
0.115 * [taylor]: Taking taylor expansion of (- (* 0.5 y)) in y
0.115 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.115 * [taylor]: Taking taylor expansion of 0.5 in y
0.115 * [taylor]: Taking taylor expansion of y in y
0.117 * [taylor]: Taking taylor expansion of (- y 1.0) in y
0.118 * [taylor]: Taking taylor expansion of y in y
0.118 * [taylor]: Taking taylor expansion of 1.0 in y
0.122 * [taylor]: Taking taylor expansion of 0 in y
0.124 * [approximate]: Taking taylor expansion of (- (/ 1 (* x y)) (+ (* 0.5 (/ 1 y)) (* 1.0 (/ 1 x)))) in (x y) around 0
0.124 * [taylor]: Taking taylor expansion of (- (/ 1 (* x y)) (+ (* 0.5 (/ 1 y)) (* 1.0 (/ 1 x)))) in y
0.124 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in y
0.124 * [taylor]: Taking taylor expansion of (* x y) in y
0.124 * [taylor]: Taking taylor expansion of x in y
0.124 * [taylor]: Taking taylor expansion of y in y
0.124 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 1.0 (/ 1 x))) in y
0.124 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.124 * [taylor]: Taking taylor expansion of 0.5 in y
0.124 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.124 * [taylor]: Taking taylor expansion of y in y
0.124 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in y
0.124 * [taylor]: Taking taylor expansion of 1.0 in y
0.124 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.124 * [taylor]: Taking taylor expansion of x in y
0.124 * [taylor]: Taking taylor expansion of (- (/ 1 (* x y)) (+ (* 0.5 (/ 1 y)) (* 1.0 (/ 1 x)))) in x
0.124 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
0.124 * [taylor]: Taking taylor expansion of (* x y) in x
0.124 * [taylor]: Taking taylor expansion of x in x
0.125 * [taylor]: Taking taylor expansion of y in x
0.125 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 1.0 (/ 1 x))) in x
0.125 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.125 * [taylor]: Taking taylor expansion of 0.5 in x
0.125 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.125 * [taylor]: Taking taylor expansion of y in x
0.125 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
0.125 * [taylor]: Taking taylor expansion of 1.0 in x
0.125 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.125 * [taylor]: Taking taylor expansion of x in x
0.125 * [taylor]: Taking taylor expansion of (- (/ 1 (* x y)) (+ (* 0.5 (/ 1 y)) (* 1.0 (/ 1 x)))) in x
0.125 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
0.125 * [taylor]: Taking taylor expansion of (* x y) in x
0.125 * [taylor]: Taking taylor expansion of x in x
0.125 * [taylor]: Taking taylor expansion of y in x
0.126 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 1.0 (/ 1 x))) in x
0.126 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.126 * [taylor]: Taking taylor expansion of 0.5 in x
0.126 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.126 * [taylor]: Taking taylor expansion of y in x
0.126 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
0.126 * [taylor]: Taking taylor expansion of 1.0 in x
0.126 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.126 * [taylor]: Taking taylor expansion of x in x
0.127 * [taylor]: Taking taylor expansion of (- (/ 1 y) 1.0) in y
0.127 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.127 * [taylor]: Taking taylor expansion of y in y
0.127 * [taylor]: Taking taylor expansion of 1.0 in y
0.129 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y))) in y
0.129 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.129 * [taylor]: Taking taylor expansion of 0.5 in y
0.129 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.129 * [taylor]: Taking taylor expansion of y in y
0.132 * [approximate]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (+ (* 1.0 (/ 1 x)) (/ 1 (* x y)))) in (x y) around 0
0.133 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (+ (* 1.0 (/ 1 x)) (/ 1 (* x y)))) in y
0.133 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.133 * [taylor]: Taking taylor expansion of 0.5 in y
0.133 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.133 * [taylor]: Taking taylor expansion of y in y
0.133 * [taylor]: Taking taylor expansion of (+ (* 1.0 (/ 1 x)) (/ 1 (* x y))) in y
0.133 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in y
0.133 * [taylor]: Taking taylor expansion of 1.0 in y
0.133 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.133 * [taylor]: Taking taylor expansion of x in y
0.133 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in y
0.133 * [taylor]: Taking taylor expansion of (* x y) in y
0.133 * [taylor]: Taking taylor expansion of x in y
0.133 * [taylor]: Taking taylor expansion of y in y
0.133 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (+ (* 1.0 (/ 1 x)) (/ 1 (* x y)))) in x
0.133 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.133 * [taylor]: Taking taylor expansion of 0.5 in x
0.133 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.133 * [taylor]: Taking taylor expansion of y in x
0.134 * [taylor]: Taking taylor expansion of (+ (* 1.0 (/ 1 x)) (/ 1 (* x y))) in x
0.134 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
0.134 * [taylor]: Taking taylor expansion of 1.0 in x
0.134 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.134 * [taylor]: Taking taylor expansion of x in x
0.137 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
0.137 * [taylor]: Taking taylor expansion of (* x y) in x
0.137 * [taylor]: Taking taylor expansion of x in x
0.137 * [taylor]: Taking taylor expansion of y in x
0.137 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (+ (* 1.0 (/ 1 x)) (/ 1 (* x y)))) in x
0.137 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.137 * [taylor]: Taking taylor expansion of 0.5 in x
0.137 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.138 * [taylor]: Taking taylor expansion of y in x
0.138 * [taylor]: Taking taylor expansion of (+ (* 1.0 (/ 1 x)) (/ 1 (* x y))) in x
0.138 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
0.138 * [taylor]: Taking taylor expansion of 1.0 in x
0.138 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.138 * [taylor]: Taking taylor expansion of x in x
0.138 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
0.138 * [taylor]: Taking taylor expansion of (* x y) in x
0.138 * [taylor]: Taking taylor expansion of x in x
0.138 * [taylor]: Taking taylor expansion of y in x
0.139 * [taylor]: Taking taylor expansion of (+ (/ 1 y) 1.0) in y
0.139 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.139 * [taylor]: Taking taylor expansion of y in y
0.139 * [taylor]: Taking taylor expansion of 1.0 in y
0.141 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.141 * [taylor]: Taking taylor expansion of 0.5 in y
0.141 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.141 * [taylor]: Taking taylor expansion of y in y
0.143 * * * [progress]: simplifying candidates
0.144 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* x (- y 1.0))
  (+ (log x) (log (- y 1.0)))
  (log (* x (- y 1.0)))
  (exp (* x (- y 1.0)))
  (* (* (* x x) x) (* (* (- y 1.0) (- y 1.0)) (- y 1.0)))
  (* (cbrt (* x (- y 1.0))) (cbrt (* x (- y 1.0))))
  (cbrt (* x (- y 1.0)))
  (* (* (* x (- y 1.0)) (* x (- y 1.0))) (* x (- y 1.0)))
  (sqrt (* x (- y 1.0)))
  (sqrt (* x (- y 1.0)))
  (* (sqrt x) (sqrt (- y 1.0)))
  (* (sqrt x) (sqrt (- y 1.0)))
  (* x y)
  (* x (- 1.0))
  (* x y)
  (* x (- 1.0))
  (* y x)
  (* (- 1.0) x)
  (* y x)
  (* (- 1.0) x)
  (* x (* (cbrt (- y 1.0)) (cbrt (- y 1.0))))
  (* x (sqrt (- y 1.0)))
  (* x 1)
  (* x (+ (sqrt y) (sqrt 1.0)))
  (* x 1)
  (* (cbrt x) (- y 1.0))
  (* (sqrt x) (- y 1.0))
  (* x (- y 1.0))
  (* x (- (pow y 3) (pow 1.0 3)))
  (* x (- (* y y) (* 1.0 1.0)))
  (/ (exp (* x (- y 1.0))) (exp (* y 0.5)))
  (log (- (* x (- y 1.0)) (* y 0.5)))
  (exp (- (* x (- y 1.0)) (* y 0.5)))
  (* (cbrt (- (* x (- y 1.0)) (* y 0.5))) (cbrt (- (* x (- y 1.0)) (* y 0.5))))
  (cbrt (- (* x (- y 1.0)) (* y 0.5)))
  (* (* (- (* x (- y 1.0)) (* y 0.5)) (- (* x (- y 1.0)) (* y 0.5))) (- (* x (- y 1.0)) (* y 0.5)))
  (sqrt (- (* x (- y 1.0)) (* y 0.5)))
  (sqrt (- (* x (- y 1.0)) (* y 0.5)))
  (- (pow (* x (- y 1.0)) 3) (pow (* y 0.5) 3))
  (+ (* (* x (- y 1.0)) (* x (- y 1.0))) (+ (* (* y 0.5) (* y 0.5)) (* (* x (- y 1.0)) (* y 0.5))))
  (- (* y 0.5))
  (- (* (* x (- y 1.0)) (* x (- y 1.0))) (* (* y 0.5) (* y 0.5)))
  (+ (* x (- y 1.0)) (* y 0.5))
  (- (* x (- 1.0)) (* y 0.5))
  (- (* x (- 1.0)) (* y 0.5))
  (- (* (- 1.0) x) (* y 0.5))
  (- (* (- 1.0) x) (* y 0.5))
  (- (* y 0.5))
  (- (* x y) (* 1.0 x))
  (- (* x y) (* 1.0 x))
  (- (* x y) (* 1.0 x))
  (- (* x y) (+ (* 1.0 x) (* 0.5 y)))
  (- (* x y) (+ (* 1.0 x) (* 0.5 y)))
  (- (* x y) (+ (* 1.0 x) (* 0.5 y)))
0.148 * * [simplify]: iteration  0 :  186  enodes  (cost  217 )
0.152 * * [simplify]: iteration  1 :  673  enodes  (cost  197 )
0.168 * * [simplify]: iteration  2 :  2659  enodes  (cost  196 )
0.215 * * [simplify]: iteration  3 :  5002  enodes  (cost  196 )
0.216 * [simplify]: Simplified to:
   (* x (- y 1.0))
  (log (* x (- y 1.0)))
  (log (* x (- y 1.0)))
  (exp (* x (- y 1.0)))
  (pow (* x (- y 1.0)) 3)
  (* (cbrt (* x (- y 1.0))) (cbrt (* x (- y 1.0))))
  (cbrt (* x (- y 1.0)))
  (pow (* x (- y 1.0)) 3)
  (sqrt (* x (- y 1.0)))
  (sqrt (* x (- y 1.0)))
  (* (sqrt x) (sqrt (- y 1.0)))
  (* (sqrt x) (sqrt (- y 1.0)))
  (* x y)
  (* x (- 1.0))
  (* x y)
  (* x (- 1.0))
  (* x y)
  (* x (- 1.0))
  (* x y)
  (* x (- 1.0))
  (* x (* (cbrt (- y 1.0)) (cbrt (- y 1.0))))
  (* x (sqrt (- y 1.0)))
  x
  (* x (+ (sqrt y) (sqrt 1.0)))
  x
  (* (cbrt x) (- y 1.0))
  (* (sqrt x) (- y 1.0))
  (* x (- y 1.0))
  (* x (- (pow y 3) (pow 1.0 3)))
  (* x (- (* y y) (* 1.0 1.0)))
  (exp (- (* x (- y 1.0)) (* y 0.5)))
  (log (- (* x (- y 1.0)) (* y 0.5)))
  (exp (- (* x (- y 1.0)) (* y 0.5)))
  (* (cbrt (- (* x (- y 1.0)) (* y 0.5))) (cbrt (- (* x (- y 1.0)) (* y 0.5))))
  (cbrt (- (* x (- y 1.0)) (* y 0.5)))
  (pow (- (* x (- y 1.0)) (* y 0.5)) 3)
  (sqrt (- (* x (- y 1.0)) (* y 0.5)))
  (sqrt (- (* x (- y 1.0)) (* y 0.5)))
  (- (pow (* x (- y 1.0)) 3) (pow (* y 0.5) 3))
  (+ (* (* x (- y 1.0)) (+ (* x (- y 1.0)) (* y 0.5))) (* (* y 0.5) (* y 0.5)))
  (- (* y 0.5))
  (- (* (* x (- y 1.0)) (* x (- y 1.0))) (* (* y 0.5) (* y 0.5)))
  (+ (* x (- y 1.0)) (* y 0.5))
  (- (* (- 1.0) x) (* y 0.5))
  (- (* (- 1.0) x) (* y 0.5))
  (- (* (- 1.0) x) (* y 0.5))
  (- (* (- 1.0) x) (* y 0.5))
  (- (* y 0.5))
  (* x (- y 1.0))
  (* x (- y 1.0))
  (* x (- y 1.0))
  (- (* x (- y 1.0)) (* y 0.5))
  (- (* x (- y 1.0)) (* y 0.5))
  (- (* x (- y 1.0)) (* y 0.5))
0.217 * * * [progress]: adding candidates to table
0.298 * * [progress]: iteration 2 / 4
0.298 * * * [progress]: picking best candidate
0.299 * * * * [pick]: Picked  #<alt (λ (x y) (+ (+ (* x y) (- (* (- 1.0) x) (* y 0.5))) 0.918938533204673))>
0.299 * * * [progress]: localizing error
0.309 * * * [progress]: generating rewritten candidates
0.309 * * * * [progress]: [ 1 / 1 ] rewriting at (2 1)
0.317 * * * [progress]: generating series expansions
0.317 * * * * [progress]: [ 1 / 1 ] generating series at (2 1)
0.318 * [approximate]: Taking taylor expansion of (- (* x y) (+ (* 1.0 x) (* 0.5 y))) in (x y) around 0
0.318 * [taylor]: Taking taylor expansion of (- (* x y) (+ (* 1.0 x) (* 0.5 y))) in y
0.318 * [taylor]: Taking taylor expansion of (* x y) in y
0.318 * [taylor]: Taking taylor expansion of x in y
0.318 * [taylor]: Taking taylor expansion of y in y
0.318 * [taylor]: Taking taylor expansion of (+ (* 1.0 x) (* 0.5 y)) in y
0.318 * [taylor]: Taking taylor expansion of (* 1.0 x) in y
0.318 * [taylor]: Taking taylor expansion of 1.0 in y
0.318 * [taylor]: Taking taylor expansion of x in y
0.318 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.318 * [taylor]: Taking taylor expansion of 0.5 in y
0.318 * [taylor]: Taking taylor expansion of y in y
0.318 * [taylor]: Taking taylor expansion of (- (* x y) (+ (* 1.0 x) (* 0.5 y))) in x
0.318 * [taylor]: Taking taylor expansion of (* x y) in x
0.318 * [taylor]: Taking taylor expansion of x in x
0.318 * [taylor]: Taking taylor expansion of y in x
0.318 * [taylor]: Taking taylor expansion of (+ (* 1.0 x) (* 0.5 y)) in x
0.318 * [taylor]: Taking taylor expansion of (* 1.0 x) in x
0.318 * [taylor]: Taking taylor expansion of 1.0 in x
0.318 * [taylor]: Taking taylor expansion of x in x
0.318 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.318 * [taylor]: Taking taylor expansion of 0.5 in x
0.318 * [taylor]: Taking taylor expansion of y in x
0.318 * [taylor]: Taking taylor expansion of (- (* x y) (+ (* 1.0 x) (* 0.5 y))) in x
0.318 * [taylor]: Taking taylor expansion of (* x y) in x
0.318 * [taylor]: Taking taylor expansion of x in x
0.318 * [taylor]: Taking taylor expansion of y in x
0.318 * [taylor]: Taking taylor expansion of (+ (* 1.0 x) (* 0.5 y)) in x
0.319 * [taylor]: Taking taylor expansion of (* 1.0 x) in x
0.319 * [taylor]: Taking taylor expansion of 1.0 in x
0.319 * [taylor]: Taking taylor expansion of x in x
0.319 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
0.319 * [taylor]: Taking taylor expansion of 0.5 in x
0.319 * [taylor]: Taking taylor expansion of y in x
0.319 * [taylor]: Taking taylor expansion of (- (* 0.5 y)) in y
0.319 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.319 * [taylor]: Taking taylor expansion of 0.5 in y
0.319 * [taylor]: Taking taylor expansion of y in y
0.322 * [taylor]: Taking taylor expansion of (- y 1.0) in y
0.322 * [taylor]: Taking taylor expansion of y in y
0.322 * [taylor]: Taking taylor expansion of 1.0 in y
0.329 * [taylor]: Taking taylor expansion of 0 in y
0.331 * [approximate]: Taking taylor expansion of (- (/ 1 (* x y)) (+ (* 0.5 (/ 1 y)) (* 1.0 (/ 1 x)))) in (x y) around 0
0.331 * [taylor]: Taking taylor expansion of (- (/ 1 (* x y)) (+ (* 0.5 (/ 1 y)) (* 1.0 (/ 1 x)))) in y
0.331 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in y
0.331 * [taylor]: Taking taylor expansion of (* x y) in y
0.331 * [taylor]: Taking taylor expansion of x in y
0.331 * [taylor]: Taking taylor expansion of y in y
0.331 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 1.0 (/ 1 x))) in y
0.331 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.331 * [taylor]: Taking taylor expansion of 0.5 in y
0.331 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.331 * [taylor]: Taking taylor expansion of y in y
0.331 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in y
0.332 * [taylor]: Taking taylor expansion of 1.0 in y
0.332 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.332 * [taylor]: Taking taylor expansion of x in y
0.332 * [taylor]: Taking taylor expansion of (- (/ 1 (* x y)) (+ (* 0.5 (/ 1 y)) (* 1.0 (/ 1 x)))) in x
0.332 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
0.332 * [taylor]: Taking taylor expansion of (* x y) in x
0.332 * [taylor]: Taking taylor expansion of x in x
0.332 * [taylor]: Taking taylor expansion of y in x
0.332 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 1.0 (/ 1 x))) in x
0.332 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.332 * [taylor]: Taking taylor expansion of 0.5 in x
0.332 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.332 * [taylor]: Taking taylor expansion of y in x
0.332 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
0.332 * [taylor]: Taking taylor expansion of 1.0 in x
0.332 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.332 * [taylor]: Taking taylor expansion of x in x
0.332 * [taylor]: Taking taylor expansion of (- (/ 1 (* x y)) (+ (* 0.5 (/ 1 y)) (* 1.0 (/ 1 x)))) in x
0.332 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
0.332 * [taylor]: Taking taylor expansion of (* x y) in x
0.332 * [taylor]: Taking taylor expansion of x in x
0.332 * [taylor]: Taking taylor expansion of y in x
0.333 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 1.0 (/ 1 x))) in x
0.333 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.333 * [taylor]: Taking taylor expansion of 0.5 in x
0.333 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.333 * [taylor]: Taking taylor expansion of y in x
0.333 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
0.333 * [taylor]: Taking taylor expansion of 1.0 in x
0.333 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.333 * [taylor]: Taking taylor expansion of x in x
0.334 * [taylor]: Taking taylor expansion of (- (/ 1 y) 1.0) in y
0.334 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.334 * [taylor]: Taking taylor expansion of y in y
0.335 * [taylor]: Taking taylor expansion of 1.0 in y
0.336 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y))) in y
0.336 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.336 * [taylor]: Taking taylor expansion of 0.5 in y
0.336 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.336 * [taylor]: Taking taylor expansion of y in y
0.340 * [approximate]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (+ (* 1.0 (/ 1 x)) (/ 1 (* x y)))) in (x y) around 0
0.340 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (+ (* 1.0 (/ 1 x)) (/ 1 (* x y)))) in y
0.340 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.340 * [taylor]: Taking taylor expansion of 0.5 in y
0.340 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.340 * [taylor]: Taking taylor expansion of y in y
0.340 * [taylor]: Taking taylor expansion of (+ (* 1.0 (/ 1 x)) (/ 1 (* x y))) in y
0.340 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in y
0.340 * [taylor]: Taking taylor expansion of 1.0 in y
0.340 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.340 * [taylor]: Taking taylor expansion of x in y
0.340 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in y
0.340 * [taylor]: Taking taylor expansion of (* x y) in y
0.340 * [taylor]: Taking taylor expansion of x in y
0.340 * [taylor]: Taking taylor expansion of y in y
0.341 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (+ (* 1.0 (/ 1 x)) (/ 1 (* x y)))) in x
0.341 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.341 * [taylor]: Taking taylor expansion of 0.5 in x
0.341 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.341 * [taylor]: Taking taylor expansion of y in x
0.341 * [taylor]: Taking taylor expansion of (+ (* 1.0 (/ 1 x)) (/ 1 (* x y))) in x
0.341 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
0.341 * [taylor]: Taking taylor expansion of 1.0 in x
0.341 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.341 * [taylor]: Taking taylor expansion of x in x
0.341 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
0.341 * [taylor]: Taking taylor expansion of (* x y) in x
0.341 * [taylor]: Taking taylor expansion of x in x
0.341 * [taylor]: Taking taylor expansion of y in x
0.341 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (+ (* 1.0 (/ 1 x)) (/ 1 (* x y)))) in x
0.342 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
0.342 * [taylor]: Taking taylor expansion of 0.5 in x
0.342 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.342 * [taylor]: Taking taylor expansion of y in x
0.342 * [taylor]: Taking taylor expansion of (+ (* 1.0 (/ 1 x)) (/ 1 (* x y))) in x
0.342 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
0.342 * [taylor]: Taking taylor expansion of 1.0 in x
0.342 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.342 * [taylor]: Taking taylor expansion of x in x
0.342 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
0.342 * [taylor]: Taking taylor expansion of (* x y) in x
0.342 * [taylor]: Taking taylor expansion of x in x
0.342 * [taylor]: Taking taylor expansion of y in x
0.343 * [taylor]: Taking taylor expansion of (+ (/ 1 y) 1.0) in y
0.343 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.343 * [taylor]: Taking taylor expansion of y in y
0.343 * [taylor]: Taking taylor expansion of 1.0 in y
0.345 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.345 * [taylor]: Taking taylor expansion of 0.5 in y
0.345 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.345 * [taylor]: Taking taylor expansion of y in y
0.346 * * * [progress]: simplifying candidates
0.347 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (exp (* x y)) (/ (exp (* (- 1.0) x)) (exp (* y 0.5))))
  (* (exp (* x y)) (exp (- (* (- 1.0) x) (* y 0.5))))
  (log (+ (* x y) (- (* (- 1.0) x) (* y 0.5))))
  (exp (+ (* x y) (- (* (- 1.0) x) (* y 0.5))))
  (* (cbrt (+ (* x y) (- (* (- 1.0) x) (* y 0.5)))) (cbrt (+ (* x y) (- (* (- 1.0) x) (* y 0.5)))))
  (cbrt (+ (* x y) (- (* (- 1.0) x) (* y 0.5))))
  (* (* (+ (* x y) (- (* (- 1.0) x) (* y 0.5))) (+ (* x y) (- (* (- 1.0) x) (* y 0.5)))) (+ (* x y) (- (* (- 1.0) x) (* y 0.5))))
  (sqrt (+ (* x y) (- (* (- 1.0) x) (* y 0.5))))
  (sqrt (+ (* x y) (- (* (- 1.0) x) (* y 0.5))))
  (+ (pow (* x y) 3) (pow (- (* (- 1.0) x) (* y 0.5)) 3))
  (+ (* (* x y) (* x y)) (- (* (- (* (- 1.0) x) (* y 0.5)) (- (* (- 1.0) x) (* y 0.5))) (* (* x y) (- (* (- 1.0) x) (* y 0.5)))))
  (- (* (* x y) (* x y)) (* (- (* (- 1.0) x) (* y 0.5)) (- (* (- 1.0) x) (* y 0.5))))
  (- (* x y) (- (* (- 1.0) x) (* y 0.5)))
  (+ (* x y) (* (- 1.0) x))
  (+ (* x y) (* (- 1.0) x))
  (+ (* x y) (* (- 1.0) x))
  (- (* x y) (+ (* 1.0 x) (* 0.5 y)))
  (- (* x y) (+ (* 1.0 x) (* 0.5 y)))
  (- (* x y) (+ (* 1.0 x) (* 0.5 y)))
0.350 * * [simplify]: iteration  0 :  115  enodes  (cost  153 )
0.352 * * [simplify]: iteration  1 :  367  enodes  (cost  127 )
0.360 * * [simplify]: iteration  2 :  1793  enodes  (cost  124 )
0.394 * * [simplify]: iteration  3 :  5002  enodes  (cost  124 )
0.394 * [simplify]: Simplified to:
   (exp (+ (* x y) (- (* (- 1.0) x) (* y 0.5))))
  (exp (+ (* x y) (- (* (- 1.0) x) (* y 0.5))))
  (log (+ (* x y) (- (* (- 1.0) x) (* y 0.5))))
  (exp (+ (* x y) (- (* (- 1.0) x) (* y 0.5))))
  (* (cbrt (+ (* x y) (- (* (- 1.0) x) (* y 0.5)))) (cbrt (+ (* x y) (- (* (- 1.0) x) (* y 0.5)))))
  (cbrt (+ (* x y) (- (* (- 1.0) x) (* y 0.5))))
  (pow (- (* x (- y 1.0)) (* y 0.5)) 3)
  (sqrt (+ (* x y) (- (* (- 1.0) x) (* y 0.5))))
  (sqrt (+ (* x y) (- (* (- 1.0) x) (* y 0.5))))
  (+ (pow (* x y) 3) (pow (- (* (- 1.0) x) (* y 0.5)) 3))
  (+ (* (- (* (- 1.0) x) (* y 0.5)) (- (- (* (- 1.0) x) (* y 0.5)) (* x y))) (* (* x y) (* x y)))
  (* (+ (* y 0.5) (* x (- y (- 1.0)))) (- (* x (- y 1.0)) (* y 0.5)))
  (+ (* y (+ 0.5 x)) (* 1.0 x))
  (* x (- y 1.0))
  (* x (- y 1.0))
  (* x (- y 1.0))
  (- (* x (- y 1.0)) (* y 0.5))
  (- (* x (- y 1.0)) (* y 0.5))
  (- (* x (- y 1.0)) (* y 0.5))
0.395 * * * [progress]: adding candidates to table
0.424 * [progress]: [Phase 3 of 3] Extracting.
0.424 * * [regime]: Finding splitpoints for: (#<alt (λ (x y) (+ (+ (* x y) (- (* (- 1.0) x) (* y 0.5))) 0.918938533204673))> #<alt (λ (x y) (+ (- (* x (- y 1.0)) (* y 0.5)) 0.918938533204673))>)
0.424 * * * [regime-changes]: Trying 4 branch expressions: ((- (* x (- y 1.0)) (* y 0.5)) (+ (- (* x (- y 1.0)) (* y 0.5)) 0.918938533204673) y x)
0.424 * * * * [regimes]: Trying to branch on (- (* x (- y 1.0)) (* y 0.5)) from (#<alt (λ (x y) (+ (+ (* x y) (- (* (- 1.0) x) (* y 0.5))) 0.918938533204673))> #<alt (λ (x y) (+ (- (* x (- y 1.0)) (* y 0.5)) 0.918938533204673))>)
0.438 * * * * [regimes]: Trying to branch on (+ (- (* x (- y 1.0)) (* y 0.5)) 0.918938533204673) from (#<alt (λ (x y) (+ (+ (* x y) (- (* (- 1.0) x) (* y 0.5))) 0.918938533204673))> #<alt (λ (x y) (+ (- (* x (- y 1.0)) (* y 0.5)) 0.918938533204673))>)
0.449 * * * * [regimes]: Trying to branch on y from (#<alt (λ (x y) (+ (+ (* x y) (- (* (- 1.0) x) (* y 0.5))) 0.918938533204673))> #<alt (λ (x y) (+ (- (* x (- y 1.0)) (* y 0.5)) 0.918938533204673))>)
0.460 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x y) (+ (+ (* x y) (- (* (- 1.0) x) (* y 0.5))) 0.918938533204673))> #<alt (λ (x y) (+ (- (* x (- y 1.0)) (* y 0.5)) 0.918938533204673))>)
0.473 * * * [regime]: Found split indices: #<option (#s(si 0 255))>
0.473 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (+ (+ (* x y) (- (* (- 1.0) x) (* y 0.5))) 0.918938533204673)
0.473 * * [simplify]: iteration  0 :  19  enodes  (cost  7 )
0.474 * * [simplify]: iteration  1 :  23  enodes  (cost  7 )
0.474 * * [simplify]: iteration  2 :  24  enodes  (cost  7 )
0.474 * * [simplify]: iteration  3 :  24  enodes  (cost  7 )
0.474 * [simplify]: Simplified to:
   (+ (+ (* x y) (- (* (- 1.0) x) (* y 0.5))) 0.918938533204673)
0.940 * [regime-testing]: Baseline error score: 0.010227197764977825
0.941 * [regime-testing]: Oracle error score: 0.005375671958994874
0.942 * [regime-testing]: End program error score: 0.010227197764977825