12.910 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.013 * * * [progress]: [2/2] Setting up program.
0.015 * [progress]: [Phase 2 of 3] Improving.
0.015 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (sqrt (+ (* x x) y))
0.017 * * [simplify]: iteration  0 :  6  enodes  (cost  3 )
0.018 * * [simplify]: iteration  1 :  6  enodes  (cost  3 )
0.019 * [simplify]: Simplified to:
   (sqrt (+ (* x x) y))
0.019 * * [progress]: iteration 1 / 4
0.019 * * * [progress]: picking best candidate
0.021 * * * * [pick]: Picked  #<alt (λ (x y) (sqrt (+ (* x x) y)))>
0.021 * * * [progress]: localizing error
0.025 * * * [progress]: generating rewritten candidates
0.025 * * * * [progress]: [ 1 / 2 ] rewriting at (2)
0.029 * * * * [progress]: [ 2 / 2 ] rewriting at (2 1)
0.034 * * * [progress]: generating series expansions
0.034 * * * * [progress]: [ 1 / 2 ] generating series at (2)
0.034 * [approximate]: Taking taylor expansion of (sqrt (+ (pow x 2) y)) in (x y) around 0
0.034 * [taylor]: Taking taylor expansion of (sqrt (+ (pow x 2) y)) in y
0.034 * [taylor]: Taking taylor expansion of (+ (pow x 2) y) in y
0.034 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.034 * [taylor]: Taking taylor expansion of x in y
0.034 * [taylor]: Taking taylor expansion of y in y
0.035 * [taylor]: Taking taylor expansion of (sqrt (+ (pow x 2) y)) in x
0.035 * [taylor]: Taking taylor expansion of (+ (pow x 2) y) in x
0.035 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.035 * [taylor]: Taking taylor expansion of x in x
0.035 * [taylor]: Taking taylor expansion of y in x
0.035 * [taylor]: Taking taylor expansion of (sqrt (+ (pow x 2) y)) in x
0.035 * [taylor]: Taking taylor expansion of (+ (pow x 2) y) in x
0.035 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.035 * [taylor]: Taking taylor expansion of x in x
0.035 * [taylor]: Taking taylor expansion of y in x
0.036 * [taylor]: Taking taylor expansion of (sqrt y) in y
0.036 * [taylor]: Taking taylor expansion of y in y
0.037 * [taylor]: Taking taylor expansion of 0 in y
0.038 * [taylor]: Taking taylor expansion of (* 1/2 (sqrt (/ 1 y))) in y
0.038 * [taylor]: Taking taylor expansion of 1/2 in y
0.038 * [taylor]: Taking taylor expansion of (sqrt (/ 1 y)) in y
0.038 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.038 * [taylor]: Taking taylor expansion of y in y
0.043 * [approximate]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) (/ 1 y))) in (x y) around 0
0.043 * [taylor]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) (/ 1 y))) in y
0.043 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in y
0.043 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.043 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.043 * [taylor]: Taking taylor expansion of x in y
0.043 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.043 * [taylor]: Taking taylor expansion of y in y
0.045 * [taylor]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) (/ 1 y))) in x
0.045 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in x
0.045 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.045 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.045 * [taylor]: Taking taylor expansion of x in x
0.045 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.045 * [taylor]: Taking taylor expansion of y in x
0.047 * [taylor]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) (/ 1 y))) in x
0.047 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in x
0.047 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.047 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.047 * [taylor]: Taking taylor expansion of x in x
0.048 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.048 * [taylor]: Taking taylor expansion of y in x
0.050 * [taylor]: Taking taylor expansion of 1 in y
0.050 * [taylor]: Taking taylor expansion of 0 in y
0.052 * [taylor]: Taking taylor expansion of (/ 1/2 y) in y
0.052 * [taylor]: Taking taylor expansion of 1/2 in y
0.052 * [taylor]: Taking taylor expansion of y in y
0.054 * [taylor]: Taking taylor expansion of 0 in y
0.056 * [taylor]: Taking taylor expansion of (/ -1/8 (pow y 2)) in y
0.056 * [taylor]: Taking taylor expansion of -1/8 in y
0.056 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.056 * [taylor]: Taking taylor expansion of y in y
0.058 * [approximate]: Taking taylor expansion of (sqrt (- (/ 1 (pow x 2)) (/ 1 y))) in (x y) around 0
0.058 * [taylor]: Taking taylor expansion of (sqrt (- (/ 1 (pow x 2)) (/ 1 y))) in y
0.058 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in y
0.058 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.058 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.058 * [taylor]: Taking taylor expansion of x in y
0.058 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.058 * [taylor]: Taking taylor expansion of y in y
0.060 * [taylor]: Taking taylor expansion of (sqrt (- (/ 1 (pow x 2)) (/ 1 y))) in x
0.060 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in x
0.060 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.060 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.060 * [taylor]: Taking taylor expansion of x in x
0.061 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.061 * [taylor]: Taking taylor expansion of y in x
0.063 * [taylor]: Taking taylor expansion of (sqrt (- (/ 1 (pow x 2)) (/ 1 y))) in x
0.063 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in x
0.063 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.063 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.063 * [taylor]: Taking taylor expansion of x in x
0.063 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.064 * [taylor]: Taking taylor expansion of y in x
0.066 * [taylor]: Taking taylor expansion of 1 in y
0.066 * [taylor]: Taking taylor expansion of 0 in y
0.068 * [taylor]: Taking taylor expansion of (/ -1/2 y) in y
0.068 * [taylor]: Taking taylor expansion of -1/2 in y
0.068 * [taylor]: Taking taylor expansion of y in y
0.070 * [taylor]: Taking taylor expansion of 0 in y
0.073 * [taylor]: Taking taylor expansion of (/ -1/8 (pow y 2)) in y
0.073 * [taylor]: Taking taylor expansion of -1/8 in y
0.073 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.073 * [taylor]: Taking taylor expansion of y in y
0.075 * * * * [progress]: [ 2 / 2 ] generating series at (2 1)
0.075 * [approximate]: Taking taylor expansion of (+ (pow x 2) y) in (x y) around 0
0.075 * [taylor]: Taking taylor expansion of (+ (pow x 2) y) in y
0.075 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.075 * [taylor]: Taking taylor expansion of x in y
0.075 * [taylor]: Taking taylor expansion of y in y
0.075 * [taylor]: Taking taylor expansion of (+ (pow x 2) y) in x
0.075 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.075 * [taylor]: Taking taylor expansion of x in x
0.075 * [taylor]: Taking taylor expansion of y in x
0.075 * [taylor]: Taking taylor expansion of (+ (pow x 2) y) in x
0.075 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.075 * [taylor]: Taking taylor expansion of x in x
0.075 * [taylor]: Taking taylor expansion of y in x
0.075 * [taylor]: Taking taylor expansion of y in y
0.075 * [taylor]: Taking taylor expansion of 0 in y
0.076 * [taylor]: Taking taylor expansion of 1 in y
0.077 * [taylor]: Taking taylor expansion of 0 in y
0.077 * [approximate]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in (x y) around 0
0.077 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in y
0.077 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.077 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.077 * [taylor]: Taking taylor expansion of x in y
0.077 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.077 * [taylor]: Taking taylor expansion of y in y
0.077 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) 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 (/ 1 y) in x
0.078 * [taylor]: Taking taylor expansion of y in x
0.078 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (/ 1 y)) in x
0.078 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.078 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.078 * [taylor]: Taking taylor expansion of x in x
0.078 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.078 * [taylor]: Taking taylor expansion of y in x
0.079 * [taylor]: Taking taylor expansion of 1 in y
0.080 * [taylor]: Taking taylor expansion of 0 in y
0.081 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.081 * [taylor]: Taking taylor expansion of y in y
0.086 * [taylor]: Taking taylor expansion of 0 in y
0.088 * [taylor]: Taking taylor expansion of 0 in y
0.088 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in (x y) around 0
0.088 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in y
0.089 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.089 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.089 * [taylor]: Taking taylor expansion of x in y
0.089 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.089 * [taylor]: Taking taylor expansion of y in y
0.089 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in x
0.089 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.089 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.089 * [taylor]: Taking taylor expansion of x in x
0.089 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.090 * [taylor]: Taking taylor expansion of y in x
0.090 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (/ 1 y)) in x
0.090 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.090 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.090 * [taylor]: Taking taylor expansion of x in x
0.090 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.090 * [taylor]: Taking taylor expansion of y in x
0.090 * [taylor]: Taking taylor expansion of 1 in y
0.091 * [taylor]: Taking taylor expansion of 0 in y
0.093 * [taylor]: Taking taylor expansion of (- (/ 1 y)) in y
0.093 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.093 * [taylor]: Taking taylor expansion of y in y
0.095 * [taylor]: Taking taylor expansion of 0 in y
0.097 * [taylor]: Taking taylor expansion of 0 in y
0.097 * * * [progress]: simplifying candidates
0.098 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (log (sqrt (+ (* x x) y)))
  (exp (sqrt (+ (* x x) y)))
  (* (cbrt (sqrt (+ (* x x) y))) (cbrt (sqrt (+ (* x x) y))))
  (cbrt (sqrt (+ (* x x) y)))
  (* (* (sqrt (+ (* x x) y)) (sqrt (+ (* x x) y))) (sqrt (+ (* x x) y)))
  (sqrt (* (cbrt (+ (* x x) y)) (cbrt (+ (* x x) y))))
  (sqrt (cbrt (+ (* x x) y)))
  (sqrt (sqrt (+ (* x x) y)))
  (sqrt (sqrt (+ (* x x) y)))
  (sqrt 1)
  (sqrt (+ (* x x) y))
  (sqrt (+ (pow (* x x) 3) (pow y 3)))
  (sqrt (+ (* (* x x) (* x x)) (- (* y y) (* (* x x) y))))
  (sqrt (- (* (* x x) (* x x)) (* y y)))
  (sqrt (- (* x x) y))
  (/ 1 2)
  (sqrt (sqrt (+ (* x x) y)))
  (sqrt (sqrt (+ (* x x) y)))
  (* (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)
  (- (+ (* +nan.0 (pow x 2)) (- (+ (* +nan.0 (pow y 2)) (- (* +nan.0 y))))))
  (+ x (* 1/2 (/ y x)))
  (- (+ x (* 1/2 (/ y x))))
  (+ (pow x 2) y)
  (+ (pow x 2) y)
  (+ (pow x 2) y)
0.101 * * [simplify]: iteration  0 :  141  enodes  (cost  152 )
0.104 * * [simplify]: iteration  1 :  475  enodes  (cost  139 )
0.112 * * [simplify]: iteration  2 :  1515  enodes  (cost  138 )
0.145 * * [simplify]: iteration  3 :  5002  enodes  (cost  136 )
0.146 * [simplify]: Simplified to:
   (log (sqrt (+ (* x x) y)))
  (exp (sqrt (+ (* x x) y)))
  (* (cbrt (sqrt (+ (* x x) y))) (cbrt (sqrt (+ (* x x) y))))
  (cbrt (sqrt (+ (* x x) y)))
  (pow (sqrt (+ (* x x) y)) 3)
  (fabs (cbrt (+ (* x x) y)))
  (sqrt (cbrt (+ (* x x) y)))
  (sqrt (sqrt (+ (* x x) y)))
  (sqrt (sqrt (+ (* x x) y)))
  1
  (sqrt (+ (* x x) y))
  (sqrt (+ (pow (* x x) 3) (pow y 3)))
  (sqrt (+ (* (* x x) (* x x)) (- (* y y) (* (* x x) y))))
  (sqrt (- (* (* x x) (* x x)) (* y y)))
  (sqrt (- (* x x) y))
  1/2
  (sqrt (sqrt (+ (* x x) y)))
  (sqrt (sqrt (+ (* x x) y)))
  (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 (+ (* x x) 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))
  (- (* x x) y)
  (* +nan.0 (- (- (pow y 2) y) (pow x 2)))
  (+ x (* 1/2 (/ y x)))
  (- (+ x (* 1/2 (/ y x))))
  (+ (* x x) y)
  (+ (* x x) y)
  (+ (* x x) y)
0.146 * * * [progress]: adding candidates to table
0.212 * * [progress]: iteration 2 / 4
0.212 * * * [progress]: picking best candidate
0.215 * * * * [pick]: Picked  #<alt (λ (x y) (- (+ x (* 1/2 (/ y x)))))>
0.215 * * * [progress]: localizing error
0.220 * * * [progress]: generating rewritten candidates
0.220 * * * * [progress]: [ 1 / 1 ] rewriting at (2 1 2)
0.228 * * * [progress]: generating series expansions
0.228 * * * * [progress]: [ 1 / 1 ] generating series at (2 1 2)
0.228 * [approximate]: Taking taylor expansion of (* 1/2 (/ y x)) in (y x) around 0
0.228 * [taylor]: Taking taylor expansion of (* 1/2 (/ y x)) in x
0.228 * [taylor]: Taking taylor expansion of 1/2 in x
0.228 * [taylor]: Taking taylor expansion of (/ y x) in x
0.228 * [taylor]: Taking taylor expansion of y in x
0.228 * [taylor]: Taking taylor expansion of x in x
0.228 * [taylor]: Taking taylor expansion of (* 1/2 (/ y x)) in y
0.228 * [taylor]: Taking taylor expansion of 1/2 in y
0.228 * [taylor]: Taking taylor expansion of (/ y x) in y
0.228 * [taylor]: Taking taylor expansion of y in y
0.228 * [taylor]: Taking taylor expansion of x in y
0.228 * [taylor]: Taking taylor expansion of (* 1/2 (/ y x)) in y
0.228 * [taylor]: Taking taylor expansion of 1/2 in y
0.229 * [taylor]: Taking taylor expansion of (/ y x) in y
0.229 * [taylor]: Taking taylor expansion of y in y
0.229 * [taylor]: Taking taylor expansion of x in y
0.229 * [taylor]: Taking taylor expansion of (/ 1/2 x) in x
0.229 * [taylor]: Taking taylor expansion of 1/2 in x
0.229 * [taylor]: Taking taylor expansion of x in x
0.230 * [taylor]: Taking taylor expansion of 0 in x
0.231 * [taylor]: Taking taylor expansion of 0 in x
0.232 * [taylor]: Taking taylor expansion of 0 in x
0.233 * [approximate]: Taking taylor expansion of (* 1/2 (/ x y)) in (y x) around 0
0.233 * [taylor]: Taking taylor expansion of (* 1/2 (/ x y)) in x
0.233 * [taylor]: Taking taylor expansion of 1/2 in x
0.233 * [taylor]: Taking taylor expansion of (/ x y) in x
0.233 * [taylor]: Taking taylor expansion of x in x
0.233 * [taylor]: Taking taylor expansion of y in x
0.233 * [taylor]: Taking taylor expansion of (* 1/2 (/ x y)) in y
0.233 * [taylor]: Taking taylor expansion of 1/2 in y
0.233 * [taylor]: Taking taylor expansion of (/ x y) in y
0.233 * [taylor]: Taking taylor expansion of x in y
0.233 * [taylor]: Taking taylor expansion of y in y
0.233 * [taylor]: Taking taylor expansion of (* 1/2 (/ x y)) in y
0.233 * [taylor]: Taking taylor expansion of 1/2 in y
0.233 * [taylor]: Taking taylor expansion of (/ x y) in y
0.233 * [taylor]: Taking taylor expansion of x in y
0.233 * [taylor]: Taking taylor expansion of y in y
0.233 * [taylor]: Taking taylor expansion of (* 1/2 x) in x
0.233 * [taylor]: Taking taylor expansion of 1/2 in x
0.233 * [taylor]: Taking taylor expansion of x in x
0.234 * [taylor]: Taking taylor expansion of 0 in x
0.236 * [taylor]: Taking taylor expansion of 0 in x
0.239 * [taylor]: Taking taylor expansion of 0 in x
0.239 * [approximate]: Taking taylor expansion of (* 1/2 (/ x y)) in (y x) around 0
0.239 * [taylor]: Taking taylor expansion of (* 1/2 (/ x y)) in x
0.239 * [taylor]: Taking taylor expansion of 1/2 in x
0.239 * [taylor]: Taking taylor expansion of (/ x y) in x
0.239 * [taylor]: Taking taylor expansion of x in x
0.239 * [taylor]: Taking taylor expansion of y in x
0.239 * [taylor]: Taking taylor expansion of (* 1/2 (/ x y)) in y
0.239 * [taylor]: Taking taylor expansion of 1/2 in y
0.239 * [taylor]: Taking taylor expansion of (/ x y) in y
0.239 * [taylor]: Taking taylor expansion of x in y
0.239 * [taylor]: Taking taylor expansion of y in y
0.239 * [taylor]: Taking taylor expansion of (* 1/2 (/ x y)) in y
0.239 * [taylor]: Taking taylor expansion of 1/2 in y
0.239 * [taylor]: Taking taylor expansion of (/ x y) in y
0.239 * [taylor]: Taking taylor expansion of x in y
0.239 * [taylor]: Taking taylor expansion of y in y
0.239 * [taylor]: Taking taylor expansion of (* 1/2 x) in x
0.239 * [taylor]: Taking taylor expansion of 1/2 in x
0.239 * [taylor]: Taking taylor expansion of x in x
0.241 * [taylor]: Taking taylor expansion of 0 in x
0.242 * [taylor]: Taking taylor expansion of 0 in x
0.245 * [taylor]: Taking taylor expansion of 0 in x
0.245 * * * [progress]: simplifying candidates
0.245 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* 1/2 (/ y x))
  (+ (log 1/2) (- (log y) (log x)))
  (+ (log 1/2) (log (/ y x)))
  (log (* 1/2 (/ y x)))
  (exp (* 1/2 (/ y x)))
  (* (* (* 1/2 1/2) 1/2) (/ (* (* y y) y) (* (* x x) x)))
  (* (* (* 1/2 1/2) 1/2) (* (* (/ y x) (/ y x)) (/ y x)))
  (* (cbrt (* 1/2 (/ y x))) (cbrt (* 1/2 (/ y x))))
  (cbrt (* 1/2 (/ y x)))
  (* (* (* 1/2 (/ y x)) (* 1/2 (/ y x))) (* 1/2 (/ y x)))
  (sqrt (* 1/2 (/ y x)))
  (sqrt (* 1/2 (/ y x)))
  (* (sqrt 1/2) (sqrt (/ y x)))
  (* (sqrt 1/2) (sqrt (/ y x)))
  (* (sqrt 1/2) (/ (sqrt y) (sqrt x)))
  (* (sqrt 1/2) (/ (sqrt y) (sqrt x)))
  (* 1/2 (* (cbrt (/ y x)) (cbrt (/ y x))))
  (* 1/2 (sqrt (/ y x)))
  (* 1/2 (/ (* (cbrt y) (cbrt y)) (* (cbrt x) (cbrt x))))
  (* 1/2 (/ (* (cbrt y) (cbrt y)) (sqrt x)))
  (* 1/2 (/ (* (cbrt y) (cbrt y)) 1))
  (* 1/2 (/ (sqrt y) (* (cbrt x) (cbrt x))))
  (* 1/2 (/ (sqrt y) (sqrt x)))
  (* 1/2 (/ (sqrt y) 1))
  (* 1/2 (/ 1 (* (cbrt x) (cbrt x))))
  (* 1/2 (/ 1 (sqrt x)))
  (* 1/2 (/ 1 1))
  (* 1/2 1)
  (* 1/2 y)
  (* (cbrt 1/2) (/ y x))
  (* (sqrt 1/2) (/ y x))
  (* 1/2 (/ y x))
  (* 1/2 y)
  (* 1/2 (/ y x))
  (* 1/2 (/ y x))
  (* 1/2 (/ y x))
0.249 * * [simplify]: iteration  0 :  164  enodes  (cost  128 )
0.253 * * [simplify]: iteration  1 :  727  enodes  (cost  118 )
0.267 * * [simplify]: iteration  2 :  2966  enodes  (cost  118 )
0.307 * * [simplify]: iteration  3 :  5001  enodes  (cost  118 )
0.310 * [simplify]: Simplified to:
   (* 1/2 (/ y x))
  (log (* 1/2 (/ y x)))
  (log (* 1/2 (/ y x)))
  (log (* 1/2 (/ y x)))
  (exp (* 1/2 (/ y x)))
  (* 1/8 (pow (/ y x) 3))
  (* 1/8 (pow (/ y x) 3))
  (* (cbrt (* 1/2 (/ y x))) (cbrt (* 1/2 (/ y x))))
  (cbrt (* 1/2 (/ y x)))
  (* 1/8 (pow (/ y x) 3))
  (sqrt (* 1/2 (/ y x)))
  (sqrt (* 1/2 (/ y x)))
  (* (sqrt 1/2) (sqrt (/ y x)))
  (* (sqrt 1/2) (sqrt (/ y x)))
  (* (sqrt 1/2) (/ (sqrt y) (sqrt x)))
  (* (sqrt 1/2) (/ (sqrt y) (sqrt x)))
  (* 1/2 (* (cbrt (/ y x)) (cbrt (/ y x))))
  (* 1/2 (sqrt (/ y x)))
  (* 1/2 (/ (* (cbrt y) (cbrt y)) (* (cbrt x) (cbrt x))))
  (* 1/2 (/ (* (cbrt y) (cbrt y)) (sqrt x)))
  (* (* (cbrt y) (cbrt y)) 1/2)
  (* 1/2 (/ (sqrt y) (* (cbrt x) (cbrt x))))
  (* 1/2 (/ (sqrt y) (sqrt x)))
  (* (sqrt y) 1/2)
  (/ 1/2 (* (cbrt x) (cbrt x)))
  (/ 1/2 (sqrt x))
  1/2
  1/2
  (* 1/2 y)
  (* (cbrt 1/2) (/ y x))
  (* (sqrt 1/2) (/ y x))
  (* 1/2 (/ y x))
  (* 1/2 y)
  (* 1/2 (/ y x))
  (* 1/2 (/ y x))
  (* 1/2 (/ y x))
0.311 * * * [progress]: adding candidates to table
0.364 * * [progress]: iteration 3 / 4
0.364 * * * [progress]: picking best candidate
0.366 * * * * [pick]: Picked  #<alt (λ (x y) (+ x (* 1/2 (/ y x))))>
0.366 * * * [progress]: localizing error
0.370 * * * [progress]: generating rewritten candidates
0.370 * * * * [progress]: [ 1 / 1 ] rewriting at (2 2)
0.378 * * * [progress]: generating series expansions
0.378 * * * * [progress]: [ 1 / 1 ] generating series at (2 2)
0.378 * [approximate]: Taking taylor expansion of (* 1/2 (/ y x)) in (y x) around 0
0.378 * [taylor]: Taking taylor expansion of (* 1/2 (/ y x)) in x
0.378 * [taylor]: Taking taylor expansion of 1/2 in x
0.378 * [taylor]: Taking taylor expansion of (/ y x) in x
0.378 * [taylor]: Taking taylor expansion of y in x
0.378 * [taylor]: Taking taylor expansion of x in x
0.378 * [taylor]: Taking taylor expansion of (* 1/2 (/ y x)) in y
0.378 * [taylor]: Taking taylor expansion of 1/2 in y
0.378 * [taylor]: Taking taylor expansion of (/ y x) in y
0.378 * [taylor]: Taking taylor expansion of y in y
0.378 * [taylor]: Taking taylor expansion of x in y
0.378 * [taylor]: Taking taylor expansion of (* 1/2 (/ y x)) in y
0.378 * [taylor]: Taking taylor expansion of 1/2 in y
0.378 * [taylor]: Taking taylor expansion of (/ y x) in y
0.378 * [taylor]: Taking taylor expansion of y in y
0.378 * [taylor]: Taking taylor expansion of x in y
0.379 * [taylor]: Taking taylor expansion of (/ 1/2 x) in x
0.379 * [taylor]: Taking taylor expansion of 1/2 in x
0.379 * [taylor]: Taking taylor expansion of x in x
0.380 * [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
0.383 * [approximate]: Taking taylor expansion of (* 1/2 (/ x y)) in (y x) around 0
0.383 * [taylor]: Taking taylor expansion of (* 1/2 (/ x y)) in x
0.383 * [taylor]: Taking taylor expansion of 1/2 in x
0.383 * [taylor]: Taking taylor expansion of (/ x y) in x
0.383 * [taylor]: Taking taylor expansion of x in x
0.383 * [taylor]: Taking taylor expansion of y in x
0.383 * [taylor]: Taking taylor expansion of (* 1/2 (/ x y)) in y
0.383 * [taylor]: Taking taylor expansion of 1/2 in y
0.383 * [taylor]: Taking taylor expansion of (/ x y) in y
0.383 * [taylor]: Taking taylor expansion of x in y
0.383 * [taylor]: Taking taylor expansion of y in y
0.383 * [taylor]: Taking taylor expansion of (* 1/2 (/ x y)) in y
0.383 * [taylor]: Taking taylor expansion of 1/2 in y
0.383 * [taylor]: Taking taylor expansion of (/ x y) in y
0.383 * [taylor]: Taking taylor expansion of x in y
0.383 * [taylor]: Taking taylor expansion of y in y
0.383 * [taylor]: Taking taylor expansion of (* 1/2 x) in x
0.383 * [taylor]: Taking taylor expansion of 1/2 in x
0.383 * [taylor]: Taking taylor expansion of x in x
0.384 * [taylor]: Taking taylor expansion of 0 in x
0.386 * [taylor]: Taking taylor expansion of 0 in x
0.389 * [taylor]: Taking taylor expansion of 0 in x
0.389 * [approximate]: Taking taylor expansion of (* 1/2 (/ x y)) in (y x) around 0
0.389 * [taylor]: Taking taylor expansion of (* 1/2 (/ x y)) in x
0.389 * [taylor]: Taking taylor expansion of 1/2 in x
0.389 * [taylor]: Taking taylor expansion of (/ x y) in x
0.389 * [taylor]: Taking taylor expansion of x in x
0.389 * [taylor]: Taking taylor expansion of y in x
0.389 * [taylor]: Taking taylor expansion of (* 1/2 (/ x y)) in y
0.389 * [taylor]: Taking taylor expansion of 1/2 in y
0.389 * [taylor]: Taking taylor expansion of (/ x y) in y
0.389 * [taylor]: Taking taylor expansion of x in y
0.389 * [taylor]: Taking taylor expansion of y in y
0.389 * [taylor]: Taking taylor expansion of (* 1/2 (/ x y)) in y
0.389 * [taylor]: Taking taylor expansion of 1/2 in y
0.389 * [taylor]: Taking taylor expansion of (/ x y) in y
0.389 * [taylor]: Taking taylor expansion of x in y
0.389 * [taylor]: Taking taylor expansion of y in y
0.389 * [taylor]: Taking taylor expansion of (* 1/2 x) in x
0.389 * [taylor]: Taking taylor expansion of 1/2 in x
0.389 * [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
0.395 * [taylor]: Taking taylor expansion of 0 in x
0.395 * * * [progress]: simplifying candidates
0.395 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* 1/2 (/ y x))
  (+ (log 1/2) (- (log y) (log x)))
  (+ (log 1/2) (log (/ y x)))
  (log (* 1/2 (/ y x)))
  (exp (* 1/2 (/ y x)))
  (* (* (* 1/2 1/2) 1/2) (/ (* (* y y) y) (* (* x x) x)))
  (* (* (* 1/2 1/2) 1/2) (* (* (/ y x) (/ y x)) (/ y x)))
  (* (cbrt (* 1/2 (/ y x))) (cbrt (* 1/2 (/ y x))))
  (cbrt (* 1/2 (/ y x)))
  (* (* (* 1/2 (/ y x)) (* 1/2 (/ y x))) (* 1/2 (/ y x)))
  (sqrt (* 1/2 (/ y x)))
  (sqrt (* 1/2 (/ y x)))
  (* (sqrt 1/2) (sqrt (/ y x)))
  (* (sqrt 1/2) (sqrt (/ y x)))
  (* (sqrt 1/2) (/ (sqrt y) (sqrt x)))
  (* (sqrt 1/2) (/ (sqrt y) (sqrt x)))
  (* 1/2 (* (cbrt (/ y x)) (cbrt (/ y x))))
  (* 1/2 (sqrt (/ y x)))
  (* 1/2 (/ (* (cbrt y) (cbrt y)) (* (cbrt x) (cbrt x))))
  (* 1/2 (/ (* (cbrt y) (cbrt y)) (sqrt x)))
  (* 1/2 (/ (* (cbrt y) (cbrt y)) 1))
  (* 1/2 (/ (sqrt y) (* (cbrt x) (cbrt x))))
  (* 1/2 (/ (sqrt y) (sqrt x)))
  (* 1/2 (/ (sqrt y) 1))
  (* 1/2 (/ 1 (* (cbrt x) (cbrt x))))
  (* 1/2 (/ 1 (sqrt x)))
  (* 1/2 (/ 1 1))
  (* 1/2 1)
  (* 1/2 y)
  (* (cbrt 1/2) (/ y x))
  (* (sqrt 1/2) (/ y x))
  (* 1/2 (/ y x))
  (* 1/2 y)
  (* 1/2 (/ y x))
  (* 1/2 (/ y x))
  (* 1/2 (/ y x))
0.399 * * [simplify]: iteration  0 :  164  enodes  (cost  128 )
0.403 * * [simplify]: iteration  1 :  727  enodes  (cost  118 )
0.417 * * [simplify]: iteration  2 :  2966  enodes  (cost  118 )
0.456 * * [simplify]: iteration  3 :  5001  enodes  (cost  118 )
0.457 * [simplify]: Simplified to:
   (* 1/2 (/ y x))
  (log (* 1/2 (/ y x)))
  (log (* 1/2 (/ y x)))
  (log (* 1/2 (/ y x)))
  (exp (* 1/2 (/ y x)))
  (* 1/8 (pow (/ y x) 3))
  (* 1/8 (pow (/ y x) 3))
  (* (cbrt (* 1/2 (/ y x))) (cbrt (* 1/2 (/ y x))))
  (cbrt (* 1/2 (/ y x)))
  (* 1/8 (pow (/ y x) 3))
  (sqrt (* 1/2 (/ y x)))
  (sqrt (* 1/2 (/ y x)))
  (* (sqrt 1/2) (sqrt (/ y x)))
  (* (sqrt 1/2) (sqrt (/ y x)))
  (* (sqrt 1/2) (/ (sqrt y) (sqrt x)))
  (* (sqrt 1/2) (/ (sqrt y) (sqrt x)))
  (* 1/2 (* (cbrt (/ y x)) (cbrt (/ y x))))
  (* 1/2 (sqrt (/ y x)))
  (* 1/2 (/ (* (cbrt y) (cbrt y)) (* (cbrt x) (cbrt x))))
  (* 1/2 (/ (* (cbrt y) (cbrt y)) (sqrt x)))
  (* (* (cbrt y) (cbrt y)) 1/2)
  (* 1/2 (/ (sqrt y) (* (cbrt x) (cbrt x))))
  (* 1/2 (/ (sqrt y) (sqrt x)))
  (* (sqrt y) 1/2)
  (/ 1/2 (* (cbrt x) (cbrt x)))
  (/ 1/2 (sqrt x))
  1/2
  1/2
  (* 1/2 y)
  (* (cbrt 1/2) (/ y x))
  (* (sqrt 1/2) (/ y x))
  (* 1/2 (/ y x))
  (* 1/2 y)
  (* 1/2 (/ y x))
  (* 1/2 (/ y x))
  (* 1/2 (/ y x))
0.457 * * * [progress]: adding candidates to table
0.512 * [progress]: [Phase 3 of 3] Extracting.
0.512 * * [regime]: Finding splitpoints for: (#<alt (λ (x y) (- (+ x (* 1/2 (/ y x)))))> #<alt (λ (x y) (sqrt (+ (* x x) y)))> #<alt (λ (x y) (+ x (* 1/2 (/ y x))))>)
0.513 * * * [regime-changes]: Trying 5 branch expressions: ((* x x) (+ (* x x) y) (sqrt (+ (* x x) y)) y x)
0.513 * * * * [regimes]: Trying to branch on (* x x) from (#<alt (λ (x y) (- (+ x (* 1/2 (/ y x)))))> #<alt (λ (x y) (sqrt (+ (* x x) y)))> #<alt (λ (x y) (+ x (* 1/2 (/ y x))))>)
0.527 * * * * [regimes]: Trying to branch on (+ (* x x) y) from (#<alt (λ (x y) (- (+ x (* 1/2 (/ y x)))))> #<alt (λ (x y) (sqrt (+ (* x x) y)))> #<alt (λ (x y) (+ x (* 1/2 (/ y x))))>)
0.546 * * * * [regimes]: Trying to branch on (sqrt (+ (* x x) y)) from (#<alt (λ (x y) (- (+ x (* 1/2 (/ y x)))))> #<alt (λ (x y) (sqrt (+ (* x x) y)))> #<alt (λ (x y) (+ x (* 1/2 (/ y x))))>)
0.565 * * * * [regimes]: Trying to branch on y from (#<alt (λ (x y) (- (+ x (* 1/2 (/ y x)))))> #<alt (λ (x y) (sqrt (+ (* x x) y)))> #<alt (λ (x y) (+ x (* 1/2 (/ y x))))>)
0.606 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x y) (- (+ x (* 1/2 (/ y x)))))> #<alt (λ (x y) (sqrt (+ (* x x) y)))> #<alt (λ (x y) (+ x (* 1/2 (/ y x))))>)
0.629 * * * [regime]: Found split indices: #<option (#s(si 0 46) #s(si 1 214) #s(si 2 255))>
0.630 * [binary-search]: Improving bounds with binary search for x and (#<alt (λ (x y) (- (+ x (* 1/2 (/ y x)))))> #<alt (λ (x y) (sqrt (+ (* x x) y)))> #<alt (λ (x y) (+ x (* 1/2 (/ y x))))>)
0.681 * [regimes]: Found splitpoints: (#s(sp 0 x -1.3474626627347847e+154) #s(sp 1 x 5.291435342096596e+124) #s(sp 2 x +nan.0)) , with alts (#<alt (λ (x y) (- (+ x (* 1/2 (/ y x)))))> #<alt (λ (x y) (sqrt (+ (* x x) y)))> #<alt (λ (x y) (+ x (* 1/2 (/ y x))))>)
0.682 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (if (<= x -1.3474626627347847e+154) (- (+ x (* 1/2 (/ y x)))) (if (<= x 5.291435342096596e+124) (sqrt (+ (* x x) y)) (+ x (* 1/2 (/ y x)))))
0.682 * * [simplify]: iteration  0 :  22  enodes  (cost  10 )
0.683 * * [simplify]: iteration  1 :  29  enodes  (cost  10 )
0.683 * * [simplify]: iteration  2 :  31  enodes  (cost  10 )
0.683 * * [simplify]: iteration  3 :  31  enodes  (cost  10 )
0.684 * [simplify]: Simplified to:
   (if (<= x -1.3474626627347847e+154) (- (+ x (* 1/2 (/ y x)))) (if (<= x 5.291435342096596e+124) (sqrt (+ (* x x) y)) (+ x (* 1/2 (/ y x)))))
1.152 * [regime-testing]: Baseline error score: 21.42255281910239
1.153 * [regime-testing]: Oracle error score: 0.002000250031253907
1.154 * [regime-testing]: End program error score: 0.06059558087127053
1.186 * [regime-testing]: Target error score: 0.512757265479575