36.393 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.011 * * * [progress]: [2/2] Setting up program.
0.012 * [progress]: [Phase 2 of 3] Improving.
0.013 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* x (- 1.0 (* x 0.5)))
0.014 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.014 * * [simplify]: iteration  1 :  10  enodes  (cost  7 )
0.016 * * [simplify]: iteration  2 :  23  enodes  (cost  7 )
0.019 * * [simplify]: iteration  3 :  44  enodes  (cost  7 )
0.024 * * [simplify]: iteration  4 :  57  enodes  (cost  7 )
0.030 * * [simplify]: iteration  done :  57  enodes  (cost  7 )
0.030 * [simplify]: Simplified to:
   (* x (- 1.0 (* x 0.5)))
0.031 * * [progress]: iteration 1 / 4
0.031 * * * [progress]: picking best candidate
0.032 * * * * [pick]: Picked  #<alt (λ (x) (* x (- 1.0 (* x 0.5))))>
0.032 * * * [progress]: localizing error
0.036 * * * [progress]: generating rewritten candidates
0.036 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.046 * * * [progress]: generating series expansions
0.046 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.046 * [approximate]: Taking taylor expansion of (* x (- 1.0 (* 0.5 x))) in (x) around 0
0.046 * [taylor]: Taking taylor expansion of (* x (- 1.0 (* 0.5 x))) in x
0.046 * [taylor]: Taking taylor expansion of x in x
0.046 * [taylor]: Taking taylor expansion of (- 1.0 (* 0.5 x)) in x
0.046 * [taylor]: Taking taylor expansion of 1.0 in x
0.046 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.046 * [taylor]: Taking taylor expansion of 0.5 in x
0.046 * [taylor]: Taking taylor expansion of x in x
0.046 * [taylor]: Taking taylor expansion of (* x (- 1.0 (* 0.5 x))) in x
0.046 * [taylor]: Taking taylor expansion of x in x
0.046 * [taylor]: Taking taylor expansion of (- 1.0 (* 0.5 x)) in x
0.046 * [taylor]: Taking taylor expansion of 1.0 in x
0.046 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
0.046 * [taylor]: Taking taylor expansion of 0.5 in x
0.046 * [taylor]: Taking taylor expansion of x in x
0.071 * [approximate]: Taking taylor expansion of (/ (- 1.0 (* 0.5 (/ 1 x))) x) in (x) around 0
0.071 * [taylor]: Taking taylor expansion of (/ (- 1.0 (* 0.5 (/ 1 x))) x) in x
0.071 * [taylor]: Taking taylor expansion of (- 1.0 (* 0.5 (/ 1 x))) in x
0.071 * [taylor]: Taking taylor expansion of 1.0 in x
0.071 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.071 * [taylor]: Taking taylor expansion of 0.5 in x
0.071 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.071 * [taylor]: Taking taylor expansion of x in x
0.072 * [taylor]: Taking taylor expansion of x in x
0.073 * [taylor]: Taking taylor expansion of (/ (- 1.0 (* 0.5 (/ 1 x))) x) in x
0.073 * [taylor]: Taking taylor expansion of (- 1.0 (* 0.5 (/ 1 x))) in x
0.073 * [taylor]: Taking taylor expansion of 1.0 in x
0.073 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.073 * [taylor]: Taking taylor expansion of 0.5 in x
0.073 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.073 * [taylor]: Taking taylor expansion of x in x
0.074 * [taylor]: Taking taylor expansion of x in x
0.092 * [approximate]: Taking taylor expansion of (* -1 (/ (+ (* 0.5 (/ 1 x)) 1.0) x)) in (x) around 0
0.092 * [taylor]: Taking taylor expansion of (* -1 (/ (+ (* 0.5 (/ 1 x)) 1.0) x)) in x
0.092 * [taylor]: Taking taylor expansion of -1 in x
0.092 * [taylor]: Taking taylor expansion of (/ (+ (* 0.5 (/ 1 x)) 1.0) x) in x
0.092 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) 1.0) in x
0.092 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.092 * [taylor]: Taking taylor expansion of 0.5 in x
0.092 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.092 * [taylor]: Taking taylor expansion of x in x
0.092 * [taylor]: Taking taylor expansion of 1.0 in x
0.092 * [taylor]: Taking taylor expansion of x in x
0.093 * [taylor]: Taking taylor expansion of (* -1 (/ (+ (* 0.5 (/ 1 x)) 1.0) x)) in x
0.093 * [taylor]: Taking taylor expansion of -1 in x
0.093 * [taylor]: Taking taylor expansion of (/ (+ (* 0.5 (/ 1 x)) 1.0) x) in x
0.093 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 x)) 1.0) in x
0.093 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
0.093 * [taylor]: Taking taylor expansion of 0.5 in x
0.093 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.093 * [taylor]: Taking taylor expansion of x in x
0.094 * [taylor]: Taking taylor expansion of 1.0 in x
0.094 * [taylor]: Taking taylor expansion of x in x
0.116 * * * [progress]: simplifying candidates
0.117 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (expm1 (* x (- 1.0 (* x 0.5))))
  (log1p (* x (- 1.0 (* x 0.5))))
  (* 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 (fma (* (cbrt 1.0) (cbrt 1.0)) (cbrt 1.0) (- (* 0.5 x))))
  (* x (fma (- 0.5) x (* 0.5 x)))
  (* x (fma (sqrt 1.0) (sqrt 1.0) (- (* 0.5 x))))
  (* x (fma (- 0.5) x (* 0.5 x)))
  (* x (fma 1 1.0 (- (* 0.5 x))))
  (* x (fma (- 0.5) x (* 0.5 x)))
  (* x 1.0)
  (* x (- (* x 0.5)))
  (* x 1.0)
  (* x (- (* x 0.5)))
  (* (fma (* (cbrt 1.0) (cbrt 1.0)) (cbrt 1.0) (- (* 0.5 x))) x)
  (* (fma (- 0.5) x (* 0.5 x)) x)
  (* (fma (sqrt 1.0) (sqrt 1.0) (- (* 0.5 x))) x)
  (* (fma (- 0.5) x (* 0.5 x)) x)
  (* (fma 1 1.0 (- (* 0.5 x))) x)
  (* (fma (- 0.5) x (* 0.5 x)) x)
  (* 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)))
0.119 * * [simplify]: iteration  0 :  71  enodes  (cost  411 )
0.130 * * [simplify]: iteration  1 :  157  enodes  (cost  408 )
0.166 * * [simplify]: iteration  2 :  604  enodes  (cost  356 )
0.421 * * [simplify]: iteration  3 :  3077  enodes  (cost  341 )
2.092 * * [simplify]: iteration  done :  5001  enodes  (cost  341 )
2.092 * [simplify]: Simplified to:
   (expm1 (* x (- 1.0 (* x 0.5))))
  (log1p (* x (- 1.0 (* x 0.5))))
  (* (fma (- x) 0.5 1.0) x)
  (log (* x (- 1.0 (* x 0.5))))
  (log (* x (- 1.0 (* x 0.5))))
  (exp (* x (- 1.0 (* x 0.5))))
  (pow (* (- 1.0 (* x 0.5)) x) 3)
  (* (cbrt (* x (- 1.0 (* x 0.5)))) (cbrt (* x (- 1.0 (* x 0.5)))))
  (cbrt (* x (- 1.0 (* x 0.5))))
  (pow (* (- 1.0 (* x 0.5)) x) 3)
  (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 (fma (- x) 0.5 (pow (cbrt 1.0) 3)))
  (* (* 0.5 x) (* 0 x))
  (* (fma (- x) 0.5 1.0) x)
  (* (* 0.5 x) (* 0 x))
  (* (fma (- x) 0.5 1.0) x)
  (* (* 0.5 x) (* 0 x))
  (* 1.0 x)
  (- (* 0.5 (pow x 2)))
  (* 1.0 x)
  (- (* 0.5 (pow x 2)))
  (* x (fma (- x) 0.5 (pow (cbrt 1.0) 3)))
  (* (* 0.5 x) (* 0 x))
  (* (fma (- x) 0.5 1.0) x)
  (* (* 0.5 x) (* 0 x))
  (* (fma (- x) 0.5 1.0) x)
  (* (* 0.5 x) (* 0 x))
  (* 1.0 x)
  (- (* 0.5 (pow x 2)))
  (* 1.0 x)
  (- (* 0.5 (pow x 2)))
  (* 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)))
  (* (fma (- x) 0.5 1.0) x)
  (* x (- (pow 1.0 3) (pow (* x 0.5) 3)))
  (* (fma x 0.5 1.0) (* (fma (- x) 0.5 1.0) x))
  (* (fma (- x) 0.5 1.0) x)
  (* (fma (- x) 0.5 1.0) x)
  (* (fma (- x) 0.5 1.0) x)
2.092 * * * [progress]: adding candidates to table
2.144 * * [progress]: iteration 2 / 4
2.144 * * * [progress]: picking best candidate
2.146 * * * * [pick]: Picked  #<alt (λ (x) (+ (* 1.0 x) (- (* 0.5 (pow x 2)))))>
2.146 * * * [progress]: localizing error
2.153 * * * [progress]: generating rewritten candidates
2.153 * * * * [progress]: [ 1 / 2 ] rewriting at (2 2 1)
2.159 * * * * [progress]: [ 2 / 2 ] rewriting at (2)
2.164 * * * [progress]: generating series expansions
2.164 * * * * [progress]: [ 1 / 2 ] generating series at (2 2 1)
2.164 * [approximate]: Taking taylor expansion of (* 0.5 (pow x 2)) in (x) around 0
2.164 * [taylor]: Taking taylor expansion of (* 0.5 (pow x 2)) in x
2.164 * [taylor]: Taking taylor expansion of 0.5 in x
2.164 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.164 * [taylor]: Taking taylor expansion of x in x
2.164 * [taylor]: Taking taylor expansion of (* 0.5 (pow x 2)) in x
2.164 * [taylor]: Taking taylor expansion of 0.5 in x
2.164 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.164 * [taylor]: Taking taylor expansion of x in x
2.173 * [approximate]: Taking taylor expansion of (/ 0.5 (pow x 2)) in (x) around 0
2.173 * [taylor]: Taking taylor expansion of (/ 0.5 (pow x 2)) in x
2.173 * [taylor]: Taking taylor expansion of 0.5 in x
2.173 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.173 * [taylor]: Taking taylor expansion of x in x
2.174 * [taylor]: Taking taylor expansion of (/ 0.5 (pow x 2)) in x
2.174 * [taylor]: Taking taylor expansion of 0.5 in x
2.174 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.174 * [taylor]: Taking taylor expansion of x in x
2.182 * [approximate]: Taking taylor expansion of (/ 0.5 (pow x 2)) in (x) around 0
2.182 * [taylor]: Taking taylor expansion of (/ 0.5 (pow x 2)) in x
2.182 * [taylor]: Taking taylor expansion of 0.5 in x
2.182 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.182 * [taylor]: Taking taylor expansion of x in x
2.182 * [taylor]: Taking taylor expansion of (/ 0.5 (pow x 2)) in x
2.182 * [taylor]: Taking taylor expansion of 0.5 in x
2.182 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.182 * [taylor]: Taking taylor expansion of x in x
2.193 * * * * [progress]: [ 2 / 2 ] generating series at (2)
2.193 * [approximate]: Taking taylor expansion of (- (* 1.0 x) (* 0.5 (pow x 2))) in (x) around 0
2.193 * [taylor]: Taking taylor expansion of (- (* 1.0 x) (* 0.5 (pow x 2))) in x
2.193 * [taylor]: Taking taylor expansion of (* 1.0 x) in x
2.193 * [taylor]: Taking taylor expansion of 1.0 in x
2.193 * [taylor]: Taking taylor expansion of x in x
2.193 * [taylor]: Taking taylor expansion of (* 0.5 (pow x 2)) in x
2.193 * [taylor]: Taking taylor expansion of 0.5 in x
2.193 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.193 * [taylor]: Taking taylor expansion of x in x
2.193 * [taylor]: Taking taylor expansion of (- (* 1.0 x) (* 0.5 (pow x 2))) in x
2.193 * [taylor]: Taking taylor expansion of (* 1.0 x) in x
2.193 * [taylor]: Taking taylor expansion of 1.0 in x
2.193 * [taylor]: Taking taylor expansion of x in x
2.193 * [taylor]: Taking taylor expansion of (* 0.5 (pow x 2)) in x
2.193 * [taylor]: Taking taylor expansion of 0.5 in x
2.193 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.193 * [taylor]: Taking taylor expansion of x in x
2.212 * [approximate]: Taking taylor expansion of (- (* 1.0 (/ 1 x)) (* 0.5 (/ 1 (pow x 2)))) in (x) around 0
2.212 * [taylor]: Taking taylor expansion of (- (* 1.0 (/ 1 x)) (* 0.5 (/ 1 (pow x 2)))) in x
2.212 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
2.212 * [taylor]: Taking taylor expansion of 1.0 in x
2.212 * [taylor]: Taking taylor expansion of (/ 1 x) in x
2.212 * [taylor]: Taking taylor expansion of x in x
2.213 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
2.213 * [taylor]: Taking taylor expansion of 0.5 in x
2.213 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
2.213 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.213 * [taylor]: Taking taylor expansion of x in x
2.213 * [taylor]: Taking taylor expansion of (- (* 1.0 (/ 1 x)) (* 0.5 (/ 1 (pow x 2)))) in x
2.213 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
2.213 * [taylor]: Taking taylor expansion of 1.0 in x
2.213 * [taylor]: Taking taylor expansion of (/ 1 x) in x
2.213 * [taylor]: Taking taylor expansion of x in x
2.213 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
2.213 * [taylor]: Taking taylor expansion of 0.5 in x
2.213 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
2.213 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.214 * [taylor]: Taking taylor expansion of x in x
2.238 * [approximate]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 (pow x 2))) (* 1.0 (/ 1 x)))) in (x) around 0
2.238 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 (pow x 2))) (* 1.0 (/ 1 x)))) in x
2.238 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 (pow x 2))) (* 1.0 (/ 1 x))) in x
2.238 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
2.238 * [taylor]: Taking taylor expansion of 0.5 in x
2.238 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
2.238 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.238 * [taylor]: Taking taylor expansion of x in x
2.239 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
2.239 * [taylor]: Taking taylor expansion of 1.0 in x
2.239 * [taylor]: Taking taylor expansion of (/ 1 x) in x
2.239 * [taylor]: Taking taylor expansion of x in x
2.239 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 (pow x 2))) (* 1.0 (/ 1 x)))) in x
2.239 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 (pow x 2))) (* 1.0 (/ 1 x))) in x
2.239 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
2.239 * [taylor]: Taking taylor expansion of 0.5 in x
2.239 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
2.239 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.239 * [taylor]: Taking taylor expansion of x in x
2.240 * [taylor]: Taking taylor expansion of (* 1.0 (/ 1 x)) in x
2.240 * [taylor]: Taking taylor expansion of 1.0 in x
2.240 * [taylor]: Taking taylor expansion of (/ 1 x) in x
2.240 * [taylor]: Taking taylor expansion of x in x
2.266 * * * [progress]: simplifying candidates
2.267 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (expm1 (* 0.5 (pow x 2)))
  (log1p (* 0.5 (pow x 2)))
  (+ (log 0.5) (* (log x) 2))
  (+ (log 0.5) (* (log x) 2))
  (+ (log 0.5) (log (pow x 2)))
  (log (* 0.5 (pow x 2)))
  (exp (* 0.5 (pow x 2)))
  (* (* (* 0.5 0.5) 0.5) (* (* (pow x 2) (pow x 2)) (pow x 2)))
  (* (cbrt (* 0.5 (pow x 2))) (cbrt (* 0.5 (pow x 2))))
  (cbrt (* 0.5 (pow x 2)))
  (* (* (* 0.5 (pow x 2)) (* 0.5 (pow x 2))) (* 0.5 (pow x 2)))
  (sqrt (* 0.5 (pow x 2)))
  (sqrt (* 0.5 (pow x 2)))
  (* (sqrt 0.5) (pow (sqrt x) 2))
  (* (sqrt 0.5) (pow (sqrt x) 2))
  (* (sqrt 0.5) x)
  (* (sqrt 0.5) x)
  (* (sqrt 0.5) (sqrt (pow x 2)))
  (* (sqrt 0.5) (sqrt (pow x 2)))
  (* (sqrt 0.5) (pow x (/ 2 2)))
  (* (sqrt 0.5) (pow x (/ 2 2)))
  (* 0.5 (pow (* (cbrt x) (cbrt x)) 2))
  (* 0.5 (pow (sqrt x) 2))
  (* 0.5 (pow 1 2))
  (* 0.5 x)
  (* 0.5 (* (cbrt (pow x 2)) (cbrt (pow x 2))))
  (* 0.5 (sqrt (pow x 2)))
  (* 0.5 1)
  (* 0.5 (pow x (/ 2 2)))
  (* (cbrt 0.5) (pow x 2))
  (* (sqrt 0.5) (pow x 2))
  (* 0.5 (pow x 2))
  (expm1 (+ (* 1.0 x) (- (* 0.5 (pow x 2)))))
  (log1p (+ (* 1.0 x) (- (* 0.5 (pow x 2)))))
  (* (exp (* 1.0 x)) (/ 1 (exp (* 0.5 (pow x 2)))))
  (* (exp (* 1.0 x)) (exp (- (* 0.5 (pow x 2)))))
  (log (+ (* 1.0 x) (- (* 0.5 (pow x 2)))))
  (exp (+ (* 1.0 x) (- (* 0.5 (pow x 2)))))
  (* (cbrt (+ (* 1.0 x) (- (* 0.5 (pow x 2))))) (cbrt (+ (* 1.0 x) (- (* 0.5 (pow x 2))))))
  (cbrt (+ (* 1.0 x) (- (* 0.5 (pow x 2)))))
  (* (* (+ (* 1.0 x) (- (* 0.5 (pow x 2)))) (+ (* 1.0 x) (- (* 0.5 (pow x 2))))) (+ (* 1.0 x) (- (* 0.5 (pow x 2)))))
  (sqrt (+ (* 1.0 x) (- (* 0.5 (pow x 2)))))
  (sqrt (+ (* 1.0 x) (- (* 0.5 (pow x 2)))))
  (+ (pow (* 1.0 x) 3) (pow (- (* 0.5 (pow x 2))) 3))
  (+ (* (* 1.0 x) (* 1.0 x)) (- (* (- (* 0.5 (pow x 2))) (- (* 0.5 (pow x 2)))) (* (* 1.0 x) (- (* 0.5 (pow x 2))))))
  (- (* (* 1.0 x) (* 1.0 x)) (* (- (* 0.5 (pow x 2))) (- (* 0.5 (pow x 2)))))
  (- (* 1.0 x) (- (* 0.5 (pow x 2))))
  (+ (* 1.0 x) 0)
  (* 0.5 (pow x 2))
  (* 0.5 (pow x 2))
  (* 0.5 (pow x 2))
  (- (* 1.0 x) (* 0.5 (pow x 2)))
  (- (* 1.0 x) (* 0.5 (pow x 2)))
  (- (* 1.0 x) (* 0.5 (pow x 2)))
2.269 * * [simplify]: iteration  0 :  85  enodes  (cost  510 )
2.284 * * [simplify]: iteration  1 :  224  enodes  (cost  454 )
2.341 * * [simplify]: iteration  2 :  985  enodes  (cost  399 )
2.762 * * [simplify]: iteration  done :  5000  enodes  (cost  364 )
2.763 * [simplify]: Simplified to:
   (expm1 (* 0.5 (pow x 2)))
  (log1p (* 0.5 (pow x 2)))
  (log (* 0.5 (pow x 2)))
  (log (* 0.5 (pow x 2)))
  (log (* 0.5 (pow x 2)))
  (log (* 0.5 (pow x 2)))
  (exp (* 0.5 (pow x 2)))
  (pow (* 0.5 (pow x 2)) 3)
  (* (cbrt (* 0.5 (pow x 2))) (cbrt (* 0.5 (pow x 2))))
  (cbrt (* 0.5 (pow x 2)))
  (pow (* 0.5 (pow x 2)) 3)
  (sqrt (* 0.5 (pow x 2)))
  (sqrt (* 0.5 (pow x 2)))
  (* x (sqrt 0.5))
  (* x (sqrt 0.5))
  (* x (sqrt 0.5))
  (* x (sqrt 0.5))
  (* (sqrt 0.5) (fabs x))
  (* (sqrt 0.5) (fabs x))
  (* x (sqrt 0.5))
  (* x (sqrt 0.5))
  (* 0.5 (pow (* (cbrt x) (cbrt x)) 2))
  (* 0.5 x)
  0.5
  (* 0.5 x)
  (* 0.5 (* (cbrt (pow x 2)) (cbrt (pow x 2))))
  (* (fabs x) 0.5)
  0.5
  (* 0.5 x)
  (* (cbrt 0.5) (pow x 2))
  (* (sqrt 0.5) (pow x 2))
  (* 0.5 (pow x 2))
  (expm1 (* x (- 1.0 (* 0.5 x))))
  (log1p (* x (- 1.0 (* 0.5 x))))
  (exp (* x (- 1.0 (* 0.5 x))))
  (exp (* x (- 1.0 (* 0.5 x))))
  (log (* x (- 1.0 (* 0.5 x))))
  (exp (* x (- 1.0 (* 0.5 x))))
  (* (cbrt (* x (- 1.0 (* 0.5 x)))) (cbrt (* x (- 1.0 (* 0.5 x)))))
  (cbrt (* x (- 1.0 (* 0.5 x))))
  (pow (* x (- 1.0 (* 0.5 x))) 3)
  (sqrt (* x (- 1.0 (* 0.5 x))))
  (sqrt (* x (- 1.0 (* 0.5 x))))
  (- (pow (* 1.0 x) 3) (pow (* 0.5 (pow x 2)) 3))
  (+ (* 0.5 (* 0.5 (pow x 4))) (* (* 1.0 x) (* x (+ (* 0.5 x) 1.0))))
  (- (* (* 1.0 x) (* 1.0 x)) (* (* 0.5 0.5) (pow x 4)))
  (* x (+ (* 0.5 x) 1.0))
  (* 1.0 x)
  (* 0.5 (pow x 2))
  (* 0.5 (pow x 2))
  (* 0.5 (pow x 2))
  (* x (- 1.0 (* 0.5 x)))
  (* x (- 1.0 (* 0.5 x)))
  (* x (- 1.0 (* 0.5 x)))
2.763 * * * [progress]: adding candidates to table
2.848 * [progress]: [Phase 3 of 3] Extracting.
2.848 * * [regime]: Finding splitpoints for: (#<alt (λ (x) (* x (- 1.0 (* x 0.5))))> #<alt (λ (x) (+ (* 1.0 x) (- (* 0.5 (pow x 2)))))>)
2.848 * * * [regime-changes]: Trying 2 branch expressions: ((* x (- 1.0 (* x 0.5))) x)
2.848 * * * * [regimes]: Trying to branch on (* x (- 1.0 (* x 0.5))) from (#<alt (λ (x) (* x (- 1.0 (* x 0.5))))> #<alt (λ (x) (+ (* 1.0 x) (- (* 0.5 (pow x 2)))))>)
2.858 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x) (* x (- 1.0 (* x 0.5))))> #<alt (λ (x) (+ (* 1.0 x) (- (* 0.5 (pow x 2)))))>)
2.867 * * * [regime]: Found split indices: #<option (#s(si 0 255))>
2.867 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* x (- 1.0 (* x 0.5)))
2.868 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
2.868 * * [simplify]: iteration  1 :  8  enodes  (cost  7 )
2.868 * * [simplify]: iteration  done :  8  enodes  (cost  7 )
2.868 * [simplify]: Simplified to:
   (* x (- 1.0 (* x 0.5)))
3.210 * [regime-testing]: Baseline error score: 0.010751343917989748
3.211 * [regime-testing]: Oracle error score: 0.0007500937617202151
3.212 * [regime-testing]: End program error score: 0.010751343917989748