11.095 * [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> :
   (* x (- 1.0 (* x 0.5)))
0.017 * * [simplify]: iteration  0 :  10  enodes  (cost  3 )
0.019 * * [simplify]: iteration  1 :  23  enodes  (cost  3 )
0.020 * * [simplify]: iteration  2 :  38  enodes  (cost  3 )
0.022 * * [simplify]: iteration  3 :  47  enodes  (cost  3 )
0.023 * * [simplify]: iteration  4 :  47  enodes  (cost  3 )
0.023 * [simplify]: Simplified to:
   (* x (- 1.0 (* x 0.5)))
0.023 * * [progress]: iteration 1 / 4
0.023 * * * [progress]: picking best candidate
0.025 * * * * [pick]: Picked  #<alt (λ (x) (* x (- 1.0 (* x 0.5))))>
0.025 * * * [progress]: localizing error
0.029 * * * [progress]: generating rewritten candidates
0.029 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.035 * * * [progress]: generating series expansions
0.035 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.035 * [approximate]: Taking taylor expansion of (* x (- 1.0 (* 0.5 x))) in (x) around 0
0.035 * [taylor]: Taking taylor expansion of (* x (- 1.0 (* 0.5 x))) in x
0.035 * [taylor]: Taking taylor expansion of x in x
0.035 * [taylor]: Taking taylor expansion of (- 1.0 (* 0.5 x)) in x
0.035 * [taylor]: Taking taylor expansion of 1.0 in x
0.035 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.035 * [taylor]: Taking taylor expansion of 0.5 in x
0.035 * [taylor]: Taking taylor expansion of x in x
0.035 * [taylor]: Taking taylor expansion of (* x (- 1.0 (* 0.5 x))) in x
0.035 * [taylor]: Taking taylor expansion of x in x
0.035 * [taylor]: Taking taylor expansion of (- 1.0 (* 0.5 x)) in x
0.035 * [taylor]: Taking taylor expansion of 1.0 in x
0.036 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.036 * [taylor]: Taking taylor expansion of 0.5 in x
0.036 * [taylor]: Taking taylor expansion of x in x
0.058 * [approximate]: Taking taylor expansion of (/ (- 1.0 (* 0.5 (/ 1 x))) x) in (x) around 0
0.058 * [taylor]: Taking taylor expansion of (/ (- 1.0 (* 0.5 (/ 1 x))) x) in x
0.058 * [taylor]: Taking taylor expansion of (- 1.0 (* 0.5 (/ 1 x))) in x
0.058 * [taylor]: Taking taylor expansion of 1.0 in x
0.058 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.058 * [taylor]: Taking taylor expansion of 0.5 in x
0.058 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.058 * [taylor]: Taking taylor expansion of x in x
0.058 * [taylor]: Taking taylor expansion of x in x
0.060 * [taylor]: Taking taylor expansion of (/ (- 1.0 (* 0.5 (/ 1 x))) x) in x
0.060 * [taylor]: Taking taylor expansion of (- 1.0 (* 0.5 (/ 1 x))) in x
0.060 * [taylor]: Taking taylor expansion of 1.0 in x
0.060 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.060 * [taylor]: Taking taylor expansion of 0.5 in x
0.060 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.060 * [taylor]: Taking taylor expansion of x in x
0.060 * [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
0.081 * [taylor]: Taking taylor expansion of 1.0 in x
0.081 * [taylor]: Taking taylor expansion of x in x
0.108 * * * [progress]: simplifying candidates
0.109 * [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 (neg (* x 0.5)))
  (* x 1.0)
  (* x (neg (* x 0.5)))
  (* 1.0 x)
  (* (neg (* x 0.5)) x)
  (* 1.0 x)
  (* (neg (* 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)))
0.112 * * [simplify]: iteration  0 :  122  enodes  (cost  130 )
0.115 * * [simplify]: iteration  1 :  534  enodes  (cost  113 )
0.128 * * [simplify]: iteration  2 :  2890  enodes  (cost  113 )
0.195 * * [simplify]: iteration  3 :  5001  enodes  (cost  113 )
0.197 * [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 (neg (* x 0.5)))
  (* x 1.0)
  (* x (neg (* x 0.5)))
  (* x 1.0)
  (* x (neg (* x 0.5)))
  (* x 1.0)
  (* x (neg (* 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)))
0.197 * * * [progress]: adding candidates to table
0.224 * * [progress]: iteration 2 / 4
0.224 * * * [progress]: picking best candidate
0.225 * * * * [pick]: Picked  #<alt (λ (x) (+ (* x 1.0) (* x (neg (* x 0.5)))))>
0.225 * * * [progress]: localizing error
0.232 * * * [progress]: generating rewritten candidates
0.232 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.236 * * * [progress]: generating series expansions
0.236 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.236 * [approximate]: Taking taylor expansion of (- (* 1.0 x) (* 0.5 (pow x 2))) in (x) around 0
0.236 * [taylor]: Taking taylor expansion of (- (* 1.0 x) (* 0.5 (pow x 2))) in x
0.236 * [taylor]: Taking taylor expansion of (* 1.0 x) in x
0.236 * [taylor]: Taking taylor expansion of 1.0 in x
0.236 * [taylor]: Taking taylor expansion of x in x
0.236 * [taylor]: Taking taylor expansion of (* 0.5 (pow x 2)) in x
0.236 * [taylor]: Taking taylor expansion of 0.5 in x
0.236 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.236 * [taylor]: Taking taylor expansion of x in x
0.236 * [taylor]: Taking taylor expansion of (- (* 1.0 x) (* 0.5 (pow x 2))) in x
0.236 * [taylor]: Taking taylor expansion of (* 1.0 x) in x
0.236 * [taylor]: Taking taylor expansion of 1.0 in x
0.236 * [taylor]: Taking taylor expansion of x in x
0.236 * [taylor]: Taking taylor expansion of (* 0.5 (pow x 2)) in x
0.236 * [taylor]: Taking taylor expansion of 0.5 in x
0.236 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.237 * [taylor]: Taking taylor expansion of x in x
0.261 * [approximate]: Taking taylor expansion of (- (* 1.0 (/ 1 x)) (* 0.5 (/ 1 (pow x 2)))) in (x) around 0
0.261 * [taylor]: Taking taylor expansion of (- (* 1.0 (/ 1 x)) (* 0.5 (/ 1 (pow x 2)))) in x
0.262 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
0.262 * [taylor]: Taking taylor expansion of 1.0 in x
0.262 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.262 * [taylor]: Taking taylor expansion of x in x
0.262 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
0.262 * [taylor]: Taking taylor expansion of 0.5 in x
0.262 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.262 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.262 * [taylor]: Taking taylor expansion of x in x
0.262 * [taylor]: Taking taylor expansion of (- (* 1.0 (/ 1 x)) (* 0.5 (/ 1 (pow x 2)))) in x
0.262 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
0.263 * [taylor]: Taking taylor expansion of 1.0 in x
0.263 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.263 * [taylor]: Taking taylor expansion of x in x
0.263 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
0.263 * [taylor]: Taking taylor expansion of 0.5 in x
0.263 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.263 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.263 * [taylor]: Taking taylor expansion of x in x
0.289 * [approximate]: Taking taylor expansion of (neg (+ (* 0.5 (/ 1 (pow x 2))) (* 1.0 (/ 1 x)))) in (x) around 0
0.289 * [taylor]: Taking taylor expansion of (neg (+ (* 0.5 (/ 1 (pow x 2))) (* 1.0 (/ 1 x)))) in x
0.289 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 (pow x 2))) (* 1.0 (/ 1 x))) in x
0.289 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
0.289 * [taylor]: Taking taylor expansion of 0.5 in x
0.289 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.289 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.289 * [taylor]: Taking taylor expansion of x in x
0.290 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
0.290 * [taylor]: Taking taylor expansion of 1.0 in x
0.290 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.290 * [taylor]: Taking taylor expansion of x in x
0.290 * [taylor]: Taking taylor expansion of (neg (+ (* 0.5 (/ 1 (pow x 2))) (* 1.0 (/ 1 x)))) in x
0.290 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 (pow x 2))) (* 1.0 (/ 1 x))) in x
0.290 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
0.290 * [taylor]: Taking taylor expansion of 0.5 in x
0.290 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.290 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.290 * [taylor]: Taking taylor expansion of x in x
0.291 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
0.291 * [taylor]: Taking taylor expansion of 1.0 in x
0.291 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.291 * [taylor]: Taking taylor expansion of x in x
0.316 * * * [progress]: simplifying candidates
0.316 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (exp (* x 1.0)) (exp (* x (neg (* x 0.5)))))
  (log (+ (* x 1.0) (* x (neg (* x 0.5)))))
  (exp (+ (* x 1.0) (* x (neg (* x 0.5)))))
  (* (cbrt (+ (* x 1.0) (* x (neg (* x 0.5))))) (cbrt (+ (* x 1.0) (* x (neg (* x 0.5))))))
  (cbrt (+ (* x 1.0) (* x (neg (* x 0.5)))))
  (* (* (+ (* x 1.0) (* x (neg (* x 0.5)))) (+ (* x 1.0) (* x (neg (* x 0.5))))) (+ (* x 1.0) (* x (neg (* x 0.5)))))
  (sqrt (+ (* x 1.0) (* x (neg (* x 0.5)))))
  (sqrt (+ (* x 1.0) (* x (neg (* x 0.5)))))
  (+ (pow (* x 1.0) 3) (pow (* x (neg (* x 0.5))) 3))
  (+ (* (* x 1.0) (* x 1.0)) (- (* (* x (neg (* x 0.5))) (* x (neg (* x 0.5)))) (* (* x 1.0) (* x (neg (* x 0.5))))))
  (- (* (* x 1.0) (* x 1.0)) (* (* x (neg (* x 0.5))) (* x (neg (* x 0.5)))))
  (- (* x 1.0) (* x (neg (* x 0.5))))
  (+ 1.0 (neg (* 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)))
0.320 * * [simplify]: iteration  0 :  116  enodes  (cost  114 )
0.323 * * [simplify]: iteration  1 :  493  enodes  (cost  90 )
0.339 * * [simplify]: iteration  2 :  3196  enodes  (cost  86 )
0.438 * * [simplify]: iteration  3 :  5001  enodes  (cost  86 )
0.439 * [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 (neg (* x 0.5))))) (cbrt (+ (* x 1.0) (* x (neg (* x 0.5))))))
  (cbrt (+ (* x 1.0) (* x (neg (* x 0.5)))))
  (pow (* (- 1.0 (* x 0.5)) x) 3)
  (sqrt (+ (* x 1.0) (* x (neg (* x 0.5)))))
  (sqrt (+ (* x 1.0) (* x (neg (* x 0.5)))))
  (- (pow (* x 1.0) 3) (pow (* x (* x 0.5)) 3))
  (* x (+ (* 1.0 (* x 1.0)) (* (neg (* x 0.5)) (* x (- (neg (* 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)
0.439 * * * [progress]: adding candidates to table
0.466 * [progress]: [Phase 3 of 3] Extracting.
0.466 * * [regime]: Finding splitpoints for: (#<alt (λ (x) (* x (- 1.0 (* x 0.5))))> #<alt (λ (x) (+ (* x 1.0) (* x (neg (* x 0.5)))))>)
0.466 * * * [regime-changes]: Trying 2 branch expressions: ((* x (- 1.0 (* x 0.5))) x)
0.467 * * * * [regimes]: Trying to branch on (* x (- 1.0 (* x 0.5))) from (#<alt (λ (x) (* x (- 1.0 (* x 0.5))))> #<alt (λ (x) (+ (* x 1.0) (* x (neg (* x 0.5)))))>)
0.476 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x) (* x (- 1.0 (* x 0.5))))> #<alt (λ (x) (+ (* x 1.0) (* x (neg (* x 0.5)))))>)
0.485 * * * [regime]: Found split indices: #<option (#s(si 0 255))>
0.485 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* x (- 1.0 (* x 0.5)))
0.486 * * [simplify]: iteration  0 :  8  enodes  (cost  3 )
0.486 * * [simplify]: iteration  1 :  8  enodes  (cost  3 )
0.486 * [simplify]: Simplified to:
   (* x (- 1.0 (* x 0.5)))
0.879 * [regime-testing]: Baseline error score: 0.012876609576197025
0.880 * [regime-testing]: Oracle error score: 0.0006250781347668458
0.881 * [regime-testing]: End program error score: 0.012876609576197025