54.853 * [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 (* (- 1.0 x) (- 1.0 y)))
0.020 * * [simplify]: iteration  0 :  13  enodes  (cost  4 )
0.021 * * [simplify]: iteration  1 :  27  enodes  (cost  4 )
0.023 * * [simplify]: iteration  2 :  78  enodes  (cost  4 )
0.025 * * [simplify]: iteration  3 :  245  enodes  (cost  4 )
0.028 * * [simplify]: iteration  4 :  634  enodes  (cost  4 )
0.035 * * [simplify]: iteration  5 :  1081  enodes  (cost  4 )
0.048 * * [simplify]: iteration  6 :  2442  enodes  (cost  4 )
0.068 * * [simplify]: iteration  7 :  4046  enodes  (cost  4 )
0.099 * * [simplify]: iteration  8 :  5001  enodes  (cost  4 )
0.100 * [simplify]: Simplified to:
   (+ x (* (- 1.0 x) (- 1.0 y)))
0.100 * * [progress]: iteration 1 / 4
0.100 * * * [progress]: picking best candidate
0.101 * * * * [pick]: Picked  #<alt (λ (x y) (+ x (* (- 1.0 x) (- 1.0 y))))>
0.101 * * * [progress]: localizing error
0.107 * * * [progress]: generating rewritten candidates
0.107 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.111 * * * [progress]: generating series expansions
0.111 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.111 * [approximate]: Taking taylor expansion of (- (+ (* x y) 1.0) (* 1.0 y)) in (x y) around 0
0.111 * [taylor]: Taking taylor expansion of (- (+ (* x y) 1.0) (* 1.0 y)) in y
0.111 * [taylor]: Taking taylor expansion of (+ (* x y) 1.0) in y
0.111 * [taylor]: Taking taylor expansion of (* x y) in y
0.111 * [taylor]: Taking taylor expansion of x in y
0.111 * [taylor]: Taking taylor expansion of y in y
0.111 * [taylor]: Taking taylor expansion of 1.0 in y
0.111 * [taylor]: Taking taylor expansion of (* 1.0 y) in y
0.111 * [taylor]: Taking taylor expansion of 1.0 in y
0.111 * [taylor]: Taking taylor expansion of y in y
0.111 * [taylor]: Taking taylor expansion of (- (+ (* x y) 1.0) (* 1.0 y)) in x
0.111 * [taylor]: Taking taylor expansion of (+ (* x y) 1.0) in x
0.111 * [taylor]: Taking taylor expansion of (* x y) in x
0.111 * [taylor]: Taking taylor expansion of x in x
0.111 * [taylor]: Taking taylor expansion of y in x
0.111 * [taylor]: Taking taylor expansion of 1.0 in x
0.111 * [taylor]: Taking taylor expansion of (* 1.0 y) in x
0.111 * [taylor]: Taking taylor expansion of 1.0 in x
0.111 * [taylor]: Taking taylor expansion of y in x
0.111 * [taylor]: Taking taylor expansion of (- (+ (* x y) 1.0) (* 1.0 y)) in x
0.111 * [taylor]: Taking taylor expansion of (+ (* x y) 1.0) in x
0.111 * [taylor]: Taking taylor expansion of (* x y) in x
0.111 * [taylor]: Taking taylor expansion of x in x
0.112 * [taylor]: Taking taylor expansion of y in x
0.112 * [taylor]: Taking taylor expansion of 1.0 in x
0.112 * [taylor]: Taking taylor expansion of (* 1.0 y) in x
0.112 * [taylor]: Taking taylor expansion of 1.0 in x
0.112 * [taylor]: Taking taylor expansion of y in x
0.112 * [taylor]: Taking taylor expansion of (- 1.0 (* 1.0 y)) in y
0.112 * [taylor]: Taking taylor expansion of 1.0 in y
0.112 * [taylor]: Taking taylor expansion of (* 1.0 y) in y
0.112 * [taylor]: Taking taylor expansion of 1.0 in y
0.112 * [taylor]: Taking taylor expansion of y in y
0.114 * [taylor]: Taking taylor expansion of y in y
0.117 * [taylor]: Taking taylor expansion of 0 in y
0.118 * [approximate]: Taking taylor expansion of (- (+ 1.0 (/ 1 (* x y))) (* 1.0 (/ 1 y))) in (x y) around 0
0.118 * [taylor]: Taking taylor expansion of (- (+ 1.0 (/ 1 (* x y))) (* 1.0 (/ 1 y))) in y
0.118 * [taylor]: Taking taylor expansion of (+ 1.0 (/ 1 (* x y))) in y
0.118 * [taylor]: Taking taylor expansion of 1.0 in y
0.118 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in y
0.118 * [taylor]: Taking taylor expansion of (* x y) in y
0.118 * [taylor]: Taking taylor expansion of x in y
0.118 * [taylor]: Taking taylor expansion of y in y
0.118 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 y)) in y
0.118 * [taylor]: Taking taylor expansion of 1.0 in y
0.118 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.119 * [taylor]: Taking taylor expansion of y in y
0.119 * [taylor]: Taking taylor expansion of (- (+ 1.0 (/ 1 (* x y))) (* 1.0 (/ 1 y))) in x
0.119 * [taylor]: Taking taylor expansion of (+ 1.0 (/ 1 (* x y))) in x
0.119 * [taylor]: Taking taylor expansion of 1.0 in x
0.119 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
0.119 * [taylor]: Taking taylor expansion of (* x y) in x
0.119 * [taylor]: Taking taylor expansion of x in x
0.119 * [taylor]: Taking taylor expansion of y in x
0.120 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 y)) in x
0.120 * [taylor]: Taking taylor expansion of 1.0 in x
0.120 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.120 * [taylor]: Taking taylor expansion of y in x
0.120 * [taylor]: Taking taylor expansion of (- (+ 1.0 (/ 1 (* x y))) (* 1.0 (/ 1 y))) in x
0.120 * [taylor]: Taking taylor expansion of (+ 1.0 (/ 1 (* x y))) in x
0.120 * [taylor]: Taking taylor expansion of 1.0 in x
0.120 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
0.120 * [taylor]: Taking taylor expansion of (* x y) in x
0.120 * [taylor]: Taking taylor expansion of x in x
0.120 * [taylor]: Taking taylor expansion of y in x
0.120 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 y)) in x
0.120 * [taylor]: Taking taylor expansion of 1.0 in x
0.120 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.120 * [taylor]: Taking taylor expansion of y in x
0.120 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.120 * [taylor]: Taking taylor expansion of y in y
0.121 * [taylor]: Taking taylor expansion of (- 1.0 (* 1.0 (/ 1 y))) in y
0.122 * [taylor]: Taking taylor expansion of 1.0 in y
0.122 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 y)) in y
0.122 * [taylor]: Taking taylor expansion of 1.0 in y
0.122 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.122 * [taylor]: Taking taylor expansion of y in y
0.128 * [taylor]: Taking taylor expansion of 0 in y
0.131 * [approximate]: Taking taylor expansion of (+ 1.0 (+ (/ 1 (* x y)) (* 1.0 (/ 1 y)))) in (x y) around 0
0.131 * [taylor]: Taking taylor expansion of (+ 1.0 (+ (/ 1 (* x y)) (* 1.0 (/ 1 y)))) in y
0.131 * [taylor]: Taking taylor expansion of 1.0 in y
0.131 * [taylor]: Taking taylor expansion of (+ (/ 1 (* x y)) (* 1.0 (/ 1 y))) in y
0.131 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in y
0.131 * [taylor]: Taking taylor expansion of (* x y) in y
0.131 * [taylor]: Taking taylor expansion of x in y
0.131 * [taylor]: Taking taylor expansion of y in y
0.131 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 y)) in y
0.131 * [taylor]: Taking taylor expansion of 1.0 in y
0.131 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.131 * [taylor]: Taking taylor expansion of y in y
0.131 * [taylor]: Taking taylor expansion of (+ 1.0 (+ (/ 1 (* x y)) (* 1.0 (/ 1 y)))) in x
0.131 * [taylor]: Taking taylor expansion of 1.0 in x
0.131 * [taylor]: Taking taylor expansion of (+ (/ 1 (* x y)) (* 1.0 (/ 1 y))) in x
0.131 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
0.131 * [taylor]: Taking taylor expansion of (* x y) in x
0.131 * [taylor]: Taking taylor expansion of x in x
0.131 * [taylor]: Taking taylor expansion of y in x
0.132 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 y)) in x
0.132 * [taylor]: Taking taylor expansion of 1.0 in x
0.132 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.132 * [taylor]: Taking taylor expansion of y in x
0.132 * [taylor]: Taking taylor expansion of (+ 1.0 (+ (/ 1 (* x y)) (* 1.0 (/ 1 y)))) in x
0.132 * [taylor]: Taking taylor expansion of 1.0 in x
0.132 * [taylor]: Taking taylor expansion of (+ (/ 1 (* x y)) (* 1.0 (/ 1 y))) in x
0.132 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
0.132 * [taylor]: Taking taylor expansion of (* x y) in x
0.132 * [taylor]: Taking taylor expansion of x in x
0.132 * [taylor]: Taking taylor expansion of y in x
0.132 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 y)) in x
0.132 * [taylor]: Taking taylor expansion of 1.0 in x
0.132 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.132 * [taylor]: Taking taylor expansion of y in x
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 y)) 1.0) in y
0.134 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 y)) in y
0.134 * [taylor]: Taking taylor expansion of 1.0 in y
0.134 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.134 * [taylor]: Taking taylor expansion of y in y
0.134 * [taylor]: Taking taylor expansion of 1.0 in y
0.136 * [taylor]: Taking taylor expansion of 0 in y
0.138 * * * [progress]: simplifying candidates
0.138 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (exp x) (exp (* (- 1.0 x) (- 1.0 y))))
  (log (+ x (* (- 1.0 x) (- 1.0 y))))
  (exp (+ x (* (- 1.0 x) (- 1.0 y))))
  (* (cbrt (+ x (* (- 1.0 x) (- 1.0 y)))) (cbrt (+ x (* (- 1.0 x) (- 1.0 y)))))
  (cbrt (+ x (* (- 1.0 x) (- 1.0 y))))
  (* (* (+ x (* (- 1.0 x) (- 1.0 y))) (+ x (* (- 1.0 x) (- 1.0 y)))) (+ x (* (- 1.0 x) (- 1.0 y))))
  (sqrt (+ x (* (- 1.0 x) (- 1.0 y))))
  (sqrt (+ x (* (- 1.0 x) (- 1.0 y))))
  (+ (pow x 3) (pow (* (- 1.0 x) (- 1.0 y)) 3))
  (+ (* x x) (- (* (* (- 1.0 x) (- 1.0 y)) (* (- 1.0 x) (- 1.0 y))) (* x (* (- 1.0 x) (- 1.0 y)))))
  (- (* x x) (* (* (- 1.0 x) (- 1.0 y)) (* (- 1.0 x) (- 1.0 y))))
  (- x (* (- 1.0 x) (- 1.0 y)))
  (+ x (* (- 1.0 x) 1.0))
  (+ x (* (- 1.0 x) 1.0))
  (+ x (* 1.0 (- 1.0 x)))
  (+ x (* 1.0 (- 1.0 x)))
  (- (+ (* x y) 1.0) (* 1.0 y))
  (- (+ (* x y) 1.0) (* 1.0 y))
  (- (+ (* x y) 1.0) (* 1.0 y))
0.141 * * [simplify]: iteration  0 :  103  enodes  (cost  108 )
0.144 * * [simplify]: iteration  1 :  334  enodes  (cost  99 )
0.152 * * [simplify]: iteration  2 :  1761  enodes  (cost  96 )
0.185 * * [simplify]: iteration  3 :  5003  enodes  (cost  96 )
0.186 * [simplify]: Simplified to:
   (exp (+ x (* (- 1.0 x) (- 1.0 y))))
  (log (+ x (* (- 1.0 x) (- 1.0 y))))
  (exp (+ x (* (- 1.0 x) (- 1.0 y))))
  (* (cbrt (+ x (* (- 1.0 x) (- 1.0 y)))) (cbrt (+ x (* (- 1.0 x) (- 1.0 y)))))
  (cbrt (+ x (* (- 1.0 x) (- 1.0 y))))
  (pow (+ x (* (- 1.0 x) (- 1.0 y))) 3)
  (sqrt (+ x (* (- 1.0 x) (- 1.0 y))))
  (sqrt (+ x (* (- 1.0 x) (- 1.0 y))))
  (+ (pow x 3) (pow (* (- 1.0 x) (- 1.0 y)) 3))
  (+ (* (* (- 1.0 x) (- 1.0 y)) (- (* (- 1.0 x) (- 1.0 y)) x)) (* x x))
  (- (* x x) (* (* (- 1.0 x) (- 1.0 y)) (* (- 1.0 x) (- 1.0 y))))
  (- x (* (- 1.0 x) (- 1.0 y)))
  (+ x (* 1.0 (- 1.0 x)))
  (+ x (* 1.0 (- 1.0 x)))
  (+ x (* 1.0 (- 1.0 x)))
  (+ x (* 1.0 (- 1.0 x)))
  (+ (* y (- x 1.0)) 1.0)
  (+ (* y (- x 1.0)) 1.0)
  (+ (* y (- x 1.0)) 1.0)
0.187 * * * [progress]: adding candidates to table
0.213 * * [progress]: iteration 2 / 4
0.213 * * * [progress]: picking best candidate
0.214 * * * * [pick]: Picked  #<alt (λ (x y) (+ (* y (- x 1.0)) 1.0))>
0.214 * * * [progress]: localizing error
0.218 * * * [progress]: generating rewritten candidates
0.218 * * * * [progress]: [ 1 / 1 ] rewriting at (2 1)
0.225 * * * [progress]: generating series expansions
0.225 * * * * [progress]: [ 1 / 1 ] generating series at (2 1)
0.225 * [approximate]: Taking taylor expansion of (* (- x 1.0) y) in (y x) around 0
0.225 * [taylor]: Taking taylor expansion of (* (- x 1.0) y) in x
0.226 * [taylor]: Taking taylor expansion of (- x 1.0) in x
0.226 * [taylor]: Taking taylor expansion of x in x
0.226 * [taylor]: Taking taylor expansion of 1.0 in x
0.226 * [taylor]: Taking taylor expansion of y in x
0.226 * [taylor]: Taking taylor expansion of (* (- x 1.0) y) in y
0.226 * [taylor]: Taking taylor expansion of (- x 1.0) in y
0.226 * [taylor]: Taking taylor expansion of x in y
0.226 * [taylor]: Taking taylor expansion of 1.0 in y
0.226 * [taylor]: Taking taylor expansion of y in y
0.226 * [taylor]: Taking taylor expansion of (* (- x 1.0) y) in y
0.226 * [taylor]: Taking taylor expansion of (- x 1.0) in y
0.226 * [taylor]: Taking taylor expansion of x in y
0.226 * [taylor]: Taking taylor expansion of 1.0 in y
0.226 * [taylor]: Taking taylor expansion of y in y
0.226 * [taylor]: Taking taylor expansion of 0 in x
0.227 * [taylor]: Taking taylor expansion of (- x 1.0) in x
0.227 * [taylor]: Taking taylor expansion of x in x
0.227 * [taylor]: Taking taylor expansion of 1.0 in x
0.229 * [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
0.232 * [approximate]: Taking taylor expansion of (/ (- (/ 1 x) 1.0) y) in (y x) around 0
0.232 * [taylor]: Taking taylor expansion of (/ (- (/ 1 x) 1.0) y) in x
0.232 * [taylor]: Taking taylor expansion of (- (/ 1 x) 1.0) in x
0.233 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.233 * [taylor]: Taking taylor expansion of x in x
0.233 * [taylor]: Taking taylor expansion of 1.0 in x
0.233 * [taylor]: Taking taylor expansion of y in x
0.233 * [taylor]: Taking taylor expansion of (/ (- (/ 1 x) 1.0) y) in y
0.233 * [taylor]: Taking taylor expansion of (- (/ 1 x) 1.0) in y
0.233 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.233 * [taylor]: Taking taylor expansion of x in y
0.233 * [taylor]: Taking taylor expansion of 1.0 in y
0.233 * [taylor]: Taking taylor expansion of y in y
0.234 * [taylor]: Taking taylor expansion of (/ (- (/ 1 x) 1.0) y) in y
0.234 * [taylor]: Taking taylor expansion of (- (/ 1 x) 1.0) in y
0.234 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.234 * [taylor]: Taking taylor expansion of x in y
0.234 * [taylor]: Taking taylor expansion of 1.0 in y
0.234 * [taylor]: Taking taylor expansion of y in y
0.235 * [taylor]: Taking taylor expansion of (- (/ 1 x) 1.0) in x
0.235 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.235 * [taylor]: Taking taylor expansion of x in x
0.235 * [taylor]: Taking taylor expansion of 1.0 in x
0.237 * [taylor]: Taking taylor expansion of 0 in x
0.240 * [taylor]: Taking taylor expansion of 0 in x
0.245 * [taylor]: Taking taylor expansion of 0 in x
0.248 * [taylor]: Taking taylor expansion of 0 in x
0.249 * [approximate]: Taking taylor expansion of (/ (+ 1.0 (/ 1 x)) y) in (y x) around 0
0.249 * [taylor]: Taking taylor expansion of (/ (+ 1.0 (/ 1 x)) y) in x
0.249 * [taylor]: Taking taylor expansion of (+ 1.0 (/ 1 x)) in x
0.249 * [taylor]: Taking taylor expansion of 1.0 in x
0.249 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.249 * [taylor]: Taking taylor expansion of x in x
0.249 * [taylor]: Taking taylor expansion of y in x
0.250 * [taylor]: Taking taylor expansion of (/ (+ 1.0 (/ 1 x)) y) in y
0.250 * [taylor]: Taking taylor expansion of (+ 1.0 (/ 1 x)) in y
0.250 * [taylor]: Taking taylor expansion of 1.0 in y
0.250 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.250 * [taylor]: Taking taylor expansion of x in y
0.250 * [taylor]: Taking taylor expansion of y in y
0.250 * [taylor]: Taking taylor expansion of (/ (+ 1.0 (/ 1 x)) y) in y
0.250 * [taylor]: Taking taylor expansion of (+ 1.0 (/ 1 x)) in y
0.250 * [taylor]: Taking taylor expansion of 1.0 in y
0.250 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.250 * [taylor]: Taking taylor expansion of x in y
0.250 * [taylor]: Taking taylor expansion of y in y
0.250 * [taylor]: Taking taylor expansion of (+ 1.0 (/ 1 x)) in x
0.250 * [taylor]: Taking taylor expansion of 1.0 in x
0.250 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.250 * [taylor]: Taking taylor expansion of x in x
0.251 * [taylor]: Taking taylor expansion of 0 in x
0.253 * [taylor]: Taking taylor expansion of 0 in x
0.256 * [taylor]: Taking taylor expansion of 0 in x
0.258 * [taylor]: Taking taylor expansion of 0 in x
0.258 * * * [progress]: simplifying candidates
0.259 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* y (- x 1.0))
  (+ (log y) (log (- x 1.0)))
  (log (* y (- x 1.0)))
  (exp (* y (- x 1.0)))
  (* (* (* y y) y) (* (* (- x 1.0) (- x 1.0)) (- x 1.0)))
  (* (cbrt (* y (- x 1.0))) (cbrt (* y (- x 1.0))))
  (cbrt (* y (- x 1.0)))
  (* (* (* y (- x 1.0)) (* y (- x 1.0))) (* y (- x 1.0)))
  (sqrt (* y (- x 1.0)))
  (sqrt (* y (- x 1.0)))
  (* (sqrt y) (sqrt (- x 1.0)))
  (* (sqrt y) (sqrt (- x 1.0)))
  (* y x)
  (* y (- 1.0))
  (* y x)
  (* y (- 1.0))
  (* x y)
  (* (- 1.0) y)
  (* x y)
  (* (- 1.0) y)
  (* y (* (cbrt (- x 1.0)) (cbrt (- x 1.0))))
  (* y (sqrt (- x 1.0)))
  (* y 1)
  (* y (+ (sqrt x) (sqrt 1.0)))
  (* y 1)
  (* (cbrt y) (- x 1.0))
  (* (sqrt y) (- x 1.0))
  (* y (- x 1.0))
  (* y (- (pow x 3) (pow 1.0 3)))
  (* y (- (* x x) (* 1.0 1.0)))
  (- (* x y) (* 1.0 y))
  (- (* x y) (* 1.0 y))
  (- (* x y) (* 1.0 y))
0.262 * * [simplify]: iteration  0 :  112  enodes  (cost  98 )
0.265 * * [simplify]: iteration  1 :  462  enodes  (cost  88 )
0.275 * * [simplify]: iteration  2 :  1883  enodes  (cost  88 )
0.304 * * [simplify]: iteration  3 :  5002  enodes  (cost  88 )
0.305 * [simplify]: Simplified to:
   (* y (- x 1.0))
  (log (* y (- x 1.0)))
  (log (* y (- x 1.0)))
  (exp (* y (- x 1.0)))
  (pow (* y (- x 1.0)) 3)
  (* (cbrt (* y (- x 1.0))) (cbrt (* y (- x 1.0))))
  (cbrt (* y (- x 1.0)))
  (pow (* y (- x 1.0)) 3)
  (sqrt (* y (- x 1.0)))
  (sqrt (* y (- x 1.0)))
  (* (sqrt y) (sqrt (- x 1.0)))
  (* (sqrt y) (sqrt (- x 1.0)))
  (* y x)
  (* y (- 1.0))
  (* y x)
  (* y (- 1.0))
  (* y x)
  (* y (- 1.0))
  (* y x)
  (* y (- 1.0))
  (* y (* (cbrt (- x 1.0)) (cbrt (- x 1.0))))
  (* y (sqrt (- x 1.0)))
  y
  (* y (+ (sqrt x) (sqrt 1.0)))
  y
  (* (cbrt y) (- x 1.0))
  (* (sqrt y) (- x 1.0))
  (* y (- x 1.0))
  (* y (- (pow x 3) (pow 1.0 3)))
  (* y (- (* x x) (* 1.0 1.0)))
  (* y (- x 1.0))
  (* y (- x 1.0))
  (* y (- x 1.0))
0.305 * * * [progress]: adding candidates to table
0.332 * [progress]: [Phase 3 of 3] Extracting.
0.333 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (+ (* y (- x 1.0)) 1.0)
0.334 * * [simplify]: iteration  0 :  8  enodes  (cost  3 )
0.334 * * [simplify]: iteration  1 :  8  enodes  (cost  3 )
0.335 * [simplify]: Simplified to:
   (+ (* y (- x 1.0)) 1.0)
0.803 * [regime-testing]: End program error score: 0.006573942055347063
0.820 * [regime-testing]: Target error score: 0.006021993374352083