8.469 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.011 * * * [progress]: [2/2] Setting up program.
0.013 * [progress]: [Phase 2 of 3] Improving.
0.013 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* x (- 1.0 (* x 0.5)))
0.015 * * [simplify]: iteration  0 :  10  enodes  (cost  3 )
0.016 * * [simplify]: iteration  1 :  23  enodes  (cost  3 )
0.017 * * [simplify]: iteration  2 :  38  enodes  (cost  3 )
0.019 * * [simplify]: iteration  3 :  47  enodes  (cost  3 )
0.020 * * [simplify]: iteration  4 :  47  enodes  (cost  3 )
0.020 * [simplify]: Simplified to:
   (* x (- 1.0 (* x 0.5)))
0.021 * * [progress]: iteration 1 / 4
0.021 * * * [progress]: picking best candidate
0.022 * * * * [pick]: Picked  #<alt (λ (x) (* x (- 1.0 (* x 0.5))))>
0.022 * * * [progress]: localizing error
0.026 * * * [progress]: generating rewritten candidates
0.026 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.034 * * * [progress]: generating series expansions
0.034 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.034 * [approximate]: Taking taylor expansion of (* x (- 1.0 (* 0.5 x))) in (x) around 0
0.034 * [taylor]: Taking taylor expansion of (* x (- 1.0 (* 0.5 x))) in x
0.034 * [taylor]: Taking taylor expansion of x in x
0.034 * [taylor]: Taking taylor expansion of (- 1.0 (* 0.5 x)) in x
0.034 * [taylor]: Taking taylor expansion of 1.0 in x
0.034 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.034 * [taylor]: Taking taylor expansion of 0.5 in x
0.034 * [taylor]: Taking taylor expansion of x in x
0.034 * [taylor]: Taking taylor expansion of (* x (- 1.0 (* 0.5 x))) in x
0.034 * [taylor]: Taking taylor expansion of x in x
0.034 * [taylor]: Taking taylor expansion of (- 1.0 (* 0.5 x)) in x
0.034 * [taylor]: Taking taylor expansion of 1.0 in x
0.034 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.034 * [taylor]: Taking taylor expansion of 0.5 in x
0.034 * [taylor]: Taking taylor expansion of x in x
0.055 * [approximate]: Taking taylor expansion of (/ (- 1.0 (* 0.5 (/ 1 x))) x) in (x) around 0
0.055 * [taylor]: Taking taylor expansion of (/ (- 1.0 (* 0.5 (/ 1 x))) x) in x
0.055 * [taylor]: Taking taylor expansion of (- 1.0 (* 0.5 (/ 1 x))) in x
0.055 * [taylor]: Taking taylor expansion of 1.0 in x
0.055 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.055 * [taylor]: Taking taylor expansion of 0.5 in x
0.055 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.055 * [taylor]: Taking taylor expansion of x in x
0.055 * [taylor]: Taking taylor expansion of x in x
0.057 * [taylor]: Taking taylor expansion of (/ (- 1.0 (* 0.5 (/ 1 x))) x) in x
0.057 * [taylor]: Taking taylor expansion of (- 1.0 (* 0.5 (/ 1 x))) in x
0.057 * [taylor]: Taking taylor expansion of 1.0 in x
0.057 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.057 * [taylor]: Taking taylor expansion of 0.5 in x
0.057 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.057 * [taylor]: Taking taylor expansion of x in x
0.057 * [taylor]: Taking taylor expansion of x in x
0.079 * [approximate]: Taking taylor expansion of (* -1 (/ (+ (* 0.5 (/ 1 x)) 1.0) x)) in (x) around 0
0.079 * [taylor]: Taking taylor expansion of (* -1 (/ (+ (* 0.5 (/ 1 x)) 1.0) x)) in x
0.079 * [taylor]: Taking taylor expansion of -1 in x
0.079 * [taylor]: Taking taylor expansion of (/ (+ (* 0.5 (/ 1 x)) 1.0) x) in x
0.079 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) 1.0) in x
0.079 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.079 * [taylor]: Taking taylor expansion of 0.5 in x
0.079 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.079 * [taylor]: Taking taylor expansion of x in x
0.079 * [taylor]: Taking taylor expansion of 1.0 in x
0.079 * [taylor]: Taking taylor expansion of x in x
0.080 * [taylor]: Taking taylor expansion of (* -1 (/ (+ (* 0.5 (/ 1 x)) 1.0) x)) in x
0.080 * [taylor]: Taking taylor expansion of -1 in x
0.080 * [taylor]: Taking taylor expansion of (/ (+ (* 0.5 (/ 1 x)) 1.0) x) in x
0.080 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) 1.0) in x
0.080 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.080 * [taylor]: Taking taylor expansion of 0.5 in x
0.080 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.080 * [taylor]: Taking taylor expansion of x in x
0.080 * [taylor]: Taking taylor expansion of 1.0 in x
0.080 * [taylor]: Taking taylor expansion of x in x
0.102 * * * [progress]: simplifying candidates
0.103 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* x (- 1.0 (* x 0.5)))
  (+ (log x) (log (- 1.0 (* x 0.5))))
  (log (* x (- 1.0 (* x 0.5))))
  (exp (* x (- 1.0 (* x 0.5))))
  (* (* (* x x) x) (* (* (- 1.0 (* x 0.5)) (- 1.0 (* x 0.5))) (- 1.0 (* x 0.5))))
  (* (cbrt (* x (- 1.0 (* x 0.5)))) (cbrt (* x (- 1.0 (* x 0.5)))))
  (cbrt (* x (- 1.0 (* x 0.5))))
  (* (* (* x (- 1.0 (* x 0.5))) (* x (- 1.0 (* x 0.5)))) (* x (- 1.0 (* x 0.5))))
  (sqrt (* x (- 1.0 (* x 0.5))))
  (sqrt (* x (- 1.0 (* x 0.5))))
  (* (sqrt x) (sqrt (- 1.0 (* x 0.5))))
  (* (sqrt x) (sqrt (- 1.0 (* x 0.5))))
  (* x 1.0)
  (* x (- (* x 0.5)))
  (* x 1.0)
  (* x (- (* x 0.5)))
  (* 1.0 x)
  (* (- (* x 0.5)) x)
  (* 1.0 x)
  (* (- (* x 0.5)) x)
  (* x (* (cbrt (- 1.0 (* x 0.5))) (cbrt (- 1.0 (* x 0.5)))))
  (* x (sqrt (- 1.0 (* x 0.5))))
  (* x 1)
  (* (cbrt x) (- 1.0 (* x 0.5)))
  (* (sqrt x) (- 1.0 (* x 0.5)))
  (* x (- 1.0 (* x 0.5)))
  (* x (- (pow 1.0 3) (pow (* x 0.5) 3)))
  (* x (- (* 1.0 1.0) (* (* x 0.5) (* x 0.5))))
  (- (* 1.0 x) (* 0.5 (pow x 2)))
  (- (* 1.0 x) (* 0.5 (pow x 2)))
  (- (* 1.0 x) (* 0.5 (pow x 2)))
0.106 * * [simplify]: iteration  0 :  122  enodes  (cost  130 )
0.109 * * [simplify]: iteration  1 :  534  enodes  (cost  113 )
0.122 * * [simplify]: iteration  2 :  2890  enodes  (cost  113 )
0.186 * * [simplify]: iteration  3 :  5002  enodes  (cost  113 )
0.187 * [simplify]: Simplified to:
   (* x (- 1.0 (* x 0.5)))
  (log (* x (- 1.0 (* x 0.5))))
  (log (* x (- 1.0 (* x 0.5))))
  (exp (* x (- 1.0 (* x 0.5))))
  (pow (* x (- 1.0 (* x 0.5))) 3)
  (* (cbrt (* x (- 1.0 (* x 0.5)))) (cbrt (* x (- 1.0 (* x 0.5)))))
  (cbrt (* x (- 1.0 (* x 0.5))))
  (pow (* x (- 1.0 (* x 0.5))) 3)
  (sqrt (* x (- 1.0 (* x 0.5))))
  (sqrt (* x (- 1.0 (* x 0.5))))
  (* (sqrt (- 1.0 (* x 0.5))) (pow x 1/2))
  (* (sqrt (- 1.0 (* x 0.5))) (pow x 1/2))
  (* x 1.0)
  (* x (- (* x 0.5)))
  (* x 1.0)
  (* x (- (* x 0.5)))
  (* x 1.0)
  (* x (- (* x 0.5)))
  (* x 1.0)
  (* x (- (* x 0.5)))
  (* x (* (cbrt (- 1.0 (* x 0.5))) (cbrt (- 1.0 (* x 0.5)))))
  (* x (sqrt (- 1.0 (* x 0.5))))
  x
  (* (cbrt x) (- 1.0 (* x 0.5)))
  (* (sqrt x) (- 1.0 (* x 0.5)))
  (* x (- 1.0 (* x 0.5)))
  (* x (- (pow 1.0 3) (pow (* x 0.5) 3)))
  (* x (- (* 1.0 1.0) (* (* x 0.5) (* x 0.5))))
  (* x (- 1.0 (* x 0.5)))
  (* x (- 1.0 (* x 0.5)))
  (* x (- 1.0 (* x 0.5)))
0.187 * * * [progress]: adding candidates to table
0.219 * * [progress]: iteration 2 / 4
0.220 * * * [progress]: picking best candidate
0.221 * * * * [pick]: Picked  #<alt (λ (x) (+ (* x 1.0) (* x (- (* x 0.5)))))>
0.221 * * * [progress]: localizing error
0.227 * * * [progress]: generating rewritten candidates
0.227 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.230 * * * [progress]: generating series expansions
0.230 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.230 * [approximate]: Taking taylor expansion of (- (* 1.0 x) (* 0.5 (pow x 2))) in (x) around 0
0.230 * [taylor]: Taking taylor expansion of (- (* 1.0 x) (* 0.5 (pow x 2))) in x
0.230 * [taylor]: Taking taylor expansion of (* 1.0 x) in x
0.230 * [taylor]: Taking taylor expansion of 1.0 in x
0.230 * [taylor]: Taking taylor expansion of x in x
0.230 * [taylor]: Taking taylor expansion of (* 0.5 (pow x 2)) in x
0.230 * [taylor]: Taking taylor expansion of 0.5 in x
0.230 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.230 * [taylor]: Taking taylor expansion of x in x
0.230 * [taylor]: Taking taylor expansion of (- (* 1.0 x) (* 0.5 (pow x 2))) in x
0.230 * [taylor]: Taking taylor expansion of (* 1.0 x) in x
0.230 * [taylor]: Taking taylor expansion of 1.0 in x
0.230 * [taylor]: Taking taylor expansion of x in x
0.230 * [taylor]: Taking taylor expansion of (* 0.5 (pow x 2)) in x
0.230 * [taylor]: Taking taylor expansion of 0.5 in x
0.230 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.230 * [taylor]: Taking taylor expansion of x in x
0.248 * [approximate]: Taking taylor expansion of (- (* 1.0 (/ 1 x)) (* 0.5 (/ 1 (pow x 2)))) in (x) around 0
0.248 * [taylor]: Taking taylor expansion of (- (* 1.0 (/ 1 x)) (* 0.5 (/ 1 (pow x 2)))) 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 (* 0.5 (/ 1 (pow x 2))) in x
0.249 * [taylor]: Taking taylor expansion of 0.5 in x
0.249 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.249 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.249 * [taylor]: Taking taylor expansion of x in x
0.249 * [taylor]: Taking taylor expansion of (- (* 1.0 (/ 1 x)) (* 0.5 (/ 1 (pow x 2)))) 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
0.250 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
0.250 * [taylor]: Taking taylor expansion of 0.5 in x
0.250 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.250 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.250 * [taylor]: Taking taylor expansion of x in x
0.274 * [approximate]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 (pow x 2))) (* 1.0 (/ 1 x)))) in (x) around 0
0.274 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 (pow x 2))) (* 1.0 (/ 1 x)))) in x
0.274 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 (pow x 2))) (* 1.0 (/ 1 x))) in x
0.274 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
0.274 * [taylor]: Taking taylor expansion of 0.5 in x
0.274 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.274 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.274 * [taylor]: Taking taylor expansion of x in x
0.275 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
0.275 * [taylor]: Taking taylor expansion of 1.0 in x
0.275 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.275 * [taylor]: Taking taylor expansion of x in x
0.275 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 (pow x 2))) (* 1.0 (/ 1 x)))) in x
0.275 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 (pow x 2))) (* 1.0 (/ 1 x))) in x
0.275 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
0.275 * [taylor]: Taking taylor expansion of 0.5 in x
0.275 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.275 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.275 * [taylor]: Taking taylor expansion of x in x
0.276 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
0.276 * [taylor]: Taking taylor expansion of 1.0 in x
0.276 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.276 * [taylor]: Taking taylor expansion of x in x
0.302 * * * [progress]: simplifying candidates
0.302 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (exp (* x 1.0)) (exp (* x (- (* x 0.5)))))
  (log (+ (* x 1.0) (* x (- (* x 0.5)))))
  (exp (+ (* x 1.0) (* x (- (* x 0.5)))))
  (* (cbrt (+ (* x 1.0) (* x (- (* x 0.5))))) (cbrt (+ (* x 1.0) (* x (- (* x 0.5))))))
  (cbrt (+ (* x 1.0) (* x (- (* x 0.5)))))
  (* (* (+ (* x 1.0) (* x (- (* x 0.5)))) (+ (* x 1.0) (* x (- (* x 0.5))))) (+ (* x 1.0) (* x (- (* x 0.5)))))
  (sqrt (+ (* x 1.0) (* x (- (* x 0.5)))))
  (sqrt (+ (* x 1.0) (* x (- (* x 0.5)))))
  (+ (pow (* x 1.0) 3) (pow (* x (- (* x 0.5))) 3))
  (+ (* (* x 1.0) (* x 1.0)) (- (* (* x (- (* x 0.5))) (* x (- (* x 0.5)))) (* (* x 1.0) (* x (- (* x 0.5))))))
  (- (* (* x 1.0) (* x 1.0)) (* (* x (- (* x 0.5))) (* x (- (* x 0.5)))))
  (- (* x 1.0) (* x (- (* x 0.5))))
  (+ 1.0 (- (* x 0.5)))
  (- (* 1.0 x) (* 0.5 (pow x 2)))
  (- (* 1.0 x) (* 0.5 (pow x 2)))
  (- (* 1.0 x) (* 0.5 (pow x 2)))
0.305 * * [simplify]: iteration  0 :  116  enodes  (cost  114 )
0.308 * * [simplify]: iteration  1 :  493  enodes  (cost  90 )
0.324 * * [simplify]: iteration  2 :  3196  enodes  (cost  86 )
0.419 * * [simplify]: iteration  3 :  5001  enodes  (cost  86 )
0.420 * [simplify]: Simplified to:
   (pow (exp x) (- 1.0 (* x 0.5)))
  (+ (log x) (log (- 1.0 (* x 0.5))))
  (pow (exp x) (- 1.0 (* x 0.5)))
  (* (cbrt (+ (* x 1.0) (* x (- (* x 0.5))))) (cbrt (+ (* x 1.0) (* x (- (* x 0.5))))))
  (cbrt (+ (* x 1.0) (* x (- (* x 0.5)))))
  (pow (* (- 1.0 (* x 0.5)) x) 3)
  (sqrt (+ (* x 1.0) (* x (- (* x 0.5)))))
  (sqrt (+ (* x 1.0) (* x (- (* x 0.5)))))
  (- (pow (* x 1.0) 3) (pow (* x (* x 0.5)) 3))
  (* x (+ (* 1.0 (* x 1.0)) (* (- (* x 0.5)) (* x (- (- (* x 0.5)) 1.0)))))
  (* (pow x 2) (- (* 1.0 1.0) (* (* x 0.5) (* x 0.5))))
  (* x (+ 1.0 (* x 0.5)))
  (- 1.0 (* x 0.5))
  (* (- 1.0 (* x 0.5)) x)
  (* (- 1.0 (* x 0.5)) x)
  (* (- 1.0 (* x 0.5)) x)
0.420 * * * [progress]: adding candidates to table
0.445 * [progress]: [Phase 3 of 3] Extracting.
0.445 * * [regime]: Finding splitpoints for: (#<alt (λ (x) (+ (* x 1.0) (* x (- (* x 0.5)))))> #<alt (λ (x) (* x (- 1.0 (* x 0.5))))>)
0.445 * * * [regime-changes]: Trying 2 branch expressions: ((* x (- 1.0 (* x 0.5))) x)
0.445 * * * * [regimes]: Trying to branch on (* x (- 1.0 (* x 0.5))) from (#<alt (λ (x) (+ (* x 1.0) (* x (- (* x 0.5)))))> #<alt (λ (x) (* x (- 1.0 (* x 0.5))))>)
0.457 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x) (+ (* x 1.0) (* x (- (* x 0.5)))))> #<alt (λ (x) (* x (- 1.0 (* x 0.5))))>)
0.466 * * * [regime]: Found split indices: #<option (#s(si 1 255))>
0.466 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* x (- 1.0 (* x 0.5)))
0.466 * * [simplify]: iteration  0 :  8  enodes  (cost  3 )
0.467 * * [simplify]: iteration  1 :  8  enodes  (cost  3 )
0.467 * [simplify]: Simplified to:
   (* x (- 1.0 (* x 0.5)))
0.796 * [regime-testing]: Baseline error score: 0.00900112514064258
0.797 * [regime-testing]: Oracle error score: 0.00025003125390673836
0.798 * [regime-testing]: End program error score: 0.00900112514064258