0.848 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.281 * * * [progress]: [2/2] Setting up program.
0.284 * [progress]: [Phase 2 of 3] Improving.
0.287 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (sqrt (- x 1.0)) (sqrt x))
0.290 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.293 * * [simplify]: iteration  1 :  9  enodes  (cost  7 )
0.294 * * [simplify]: iteration  2 :  10  enodes  (cost  7 )
0.295 * * [simplify]: iteration  done :  10  enodes  (cost  7 )
0.295 * [simplify]: Simplified to:
   (* (sqrt (- x 1.0)) (sqrt x))
0.296 * * [progress]: iteration 1 / 4
0.296 * * * [progress]: picking best candidate
0.298 * * * * [pick]: Picked  #<alt (λ (x) (* (sqrt (- x 1.0)) (sqrt x)))>
0.298 * * * [progress]: localizing error
0.306 * * * [progress]: generating rewritten candidates
0.306 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.323 * * * [progress]: generating series expansions
0.323 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.327 * [approximate]: Taking taylor expansion of (sqrt (* (- x 1.0) x)) in (x) around 0
0.328 * [taylor]: Taking taylor expansion of (sqrt (* (- x 1.0) x)) in x
0.328 * [taylor]: Taking taylor expansion of (* (- x 1.0) x) in x
0.328 * [taylor]: Taking taylor expansion of (- x 1.0) in x
0.328 * [taylor]: Taking taylor expansion of x in x
0.328 * [taylor]: Taking taylor expansion of 1.0 in x
0.329 * [taylor]: Taking taylor expansion of x in x
0.333 * [taylor]: Taking taylor expansion of (sqrt (* (- x 1.0) x)) in x
0.334 * [taylor]: Taking taylor expansion of (* (- x 1.0) x) in x
0.334 * [taylor]: Taking taylor expansion of (- x 1.0) in x
0.334 * [taylor]: Taking taylor expansion of x in x
0.334 * [taylor]: Taking taylor expansion of 1.0 in x
0.334 * [taylor]: Taking taylor expansion of x in x
0.356 * [approximate]: Taking taylor expansion of (sqrt (/ (- (/ 1 x) 1.0) x)) in (x) around 0
0.356 * [taylor]: Taking taylor expansion of (sqrt (/ (- (/ 1 x) 1.0) x)) in x
0.356 * [taylor]: Taking taylor expansion of (/ (- (/ 1 x) 1.0) x) in x
0.356 * [taylor]: Taking taylor expansion of (- (/ 1 x) 1.0) in x
0.356 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.356 * [taylor]: Taking taylor expansion of x in x
0.356 * [taylor]: Taking taylor expansion of 1.0 in x
0.356 * [taylor]: Taking taylor expansion of x in x
0.361 * [taylor]: Taking taylor expansion of (sqrt (/ (- (/ 1 x) 1.0) x)) in x
0.361 * [taylor]: Taking taylor expansion of (/ (- (/ 1 x) 1.0) x) in x
0.362 * [taylor]: Taking taylor expansion of (- (/ 1 x) 1.0) in x
0.362 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.362 * [taylor]: Taking taylor expansion of x in x
0.362 * [taylor]: Taking taylor expansion of 1.0 in x
0.362 * [taylor]: Taking taylor expansion of x in x
0.370 * [approximate]: Taking taylor expansion of (* (sqrt (- (+ 1.0 (/ 1 x)))) (sqrt (/ -1 x))) in (x) around 0
0.370 * [taylor]: Taking taylor expansion of (* (sqrt (- (+ 1.0 (/ 1 x)))) (sqrt (/ -1 x))) in x
0.370 * [taylor]: Taking taylor expansion of (sqrt (- (+ 1.0 (/ 1 x)))) in x
0.370 * [taylor]: Taking taylor expansion of (- (+ 1.0 (/ 1 x))) in x
0.370 * [taylor]: Taking taylor expansion of (+ 1.0 (/ 1 x)) in x
0.370 * [taylor]: Taking taylor expansion of 1.0 in x
0.370 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.370 * [taylor]: Taking taylor expansion of x in x
0.372 * [taylor]: Taking taylor expansion of (sqrt (/ -1 x)) in x
0.372 * [taylor]: Taking taylor expansion of (/ -1 x) in x
0.372 * [taylor]: Taking taylor expansion of -1 in x
0.372 * [taylor]: Taking taylor expansion of x in x
0.373 * [taylor]: Taking taylor expansion of (* (sqrt (- (+ 1.0 (/ 1 x)))) (sqrt (/ -1 x))) in x
0.373 * [taylor]: Taking taylor expansion of (sqrt (- (+ 1.0 (/ 1 x)))) in x
0.373 * [taylor]: Taking taylor expansion of (- (+ 1.0 (/ 1 x))) in x
0.373 * [taylor]: Taking taylor expansion of (+ 1.0 (/ 1 x)) in x
0.373 * [taylor]: Taking taylor expansion of 1.0 in x
0.373 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.373 * [taylor]: Taking taylor expansion of x in x
0.375 * [taylor]: Taking taylor expansion of (sqrt (/ -1 x)) in x
0.375 * [taylor]: Taking taylor expansion of (/ -1 x) in x
0.375 * [taylor]: Taking taylor expansion of -1 in x
0.375 * [taylor]: Taking taylor expansion of x in x
0.404 * * * [progress]: simplifying candidates
0.405 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (- x 1.0) x)
  (* (sqrt (- x 1.0)) (sqrt x))
  (* (- x 1.0) x)
  (+ (log (sqrt (- x 1.0))) (log (sqrt x)))
  (log (* (sqrt (- x 1.0)) (sqrt x)))
  (exp (* (sqrt (- x 1.0)) (sqrt x)))
  (* (* (* (sqrt (- x 1.0)) (sqrt (- x 1.0))) (sqrt (- x 1.0))) (* (* (sqrt x) (sqrt x)) (sqrt x)))
  (* (cbrt (* (sqrt (- x 1.0)) (sqrt x))) (cbrt (* (sqrt (- x 1.0)) (sqrt x))))
  (cbrt (* (sqrt (- x 1.0)) (sqrt x)))
  (* (* (* (sqrt (- x 1.0)) (sqrt x)) (* (sqrt (- x 1.0)) (sqrt x))) (* (sqrt (- x 1.0)) (sqrt x)))
  (* (- x 1.0) x)
  (sqrt (* (sqrt (- x 1.0)) (sqrt x)))
  (sqrt (* (sqrt (- x 1.0)) (sqrt x)))
  (* (sqrt (sqrt (- x 1.0))) (sqrt (sqrt x)))
  (* (sqrt (sqrt (- x 1.0))) (sqrt (sqrt x)))
  (* (sqrt (sqrt (- x 1.0))) (sqrt (sqrt x)))
  (* (sqrt (sqrt (- x 1.0))) (sqrt (sqrt x)))
  (* (sqrt (sqrt (- x 1.0))) (sqrt (sqrt x)))
  (* (sqrt (sqrt (- x 1.0))) (sqrt (sqrt x)))
  (* (sqrt (sqrt (- x 1.0))) (sqrt (sqrt x)))
  (* (sqrt (sqrt (- x 1.0))) (sqrt (sqrt x)))
  (* (sqrt (- x 1.0)) (* (cbrt (sqrt x)) (cbrt (sqrt x))))
  (* (sqrt (- x 1.0)) (sqrt (* (cbrt x) (cbrt x))))
  (* (sqrt (- x 1.0)) (sqrt (sqrt x)))
  (* (sqrt (- x 1.0)) (sqrt 1))
  (* (sqrt (- x 1.0)) (sqrt (sqrt x)))
  (* (sqrt (- x 1.0)) 1)
  (* (cbrt (sqrt (- x 1.0))) (sqrt x))
  (* (sqrt (cbrt (- x 1.0))) (sqrt x))
  (* (sqrt (sqrt (- x 1.0))) (sqrt x))
  (* (sqrt (- x 1.0)) (sqrt x))
  (* (sqrt (- (sqrt x) (sqrt 1.0))) (sqrt x))
  (* (sqrt (- x 1.0)) (sqrt x))
  (* (sqrt (sqrt (- x 1.0))) (sqrt x))
  (* (sqrt (- x 1.0)) (sqrt x))
  (* (sqrt (- (pow x 3) (pow 1.0 3))) (sqrt x))
  (* (sqrt (- (* x x) (* 1.0 1.0))) (sqrt x))
  (- (+ (* +nan.0 (pow x 2)) (- (+ (* +nan.0 (pow x 3)) (- (* +nan.0 x))))))
  (- x (+ 0.5 (* 0.125 (/ 1 x))))
  (- (+ (* +nan.0 (/ 1 (pow x 2))) (- (+ (* +nan.0 (/ 1 x)) (- +nan.0)))))
0.407 * * [simplify]: iteration  0 :  83  enodes  (cost  387 )
0.422 * * [simplify]: iteration  1 :  182  enodes  (cost  354 )
0.461 * * [simplify]: iteration  2 :  451  enodes  (cost  338 )
0.659 * * [simplify]: iteration  3 :  1082  enodes  (cost  335 )
1.249 * * [simplify]: iteration  4 :  2605  enodes  (cost  334 )
2.148 * * [simplify]: iteration  done :  5000  enodes  (cost  332 )
2.148 * [simplify]: Simplified to:
   (* x (- x 1.0))
  (* (sqrt (- x 1.0)) (sqrt x))
  (* x (- x 1.0))
  (log (* (sqrt (- x 1.0)) (sqrt x)))
  (log (* (sqrt (- x 1.0)) (sqrt x)))
  (exp (* (sqrt (- x 1.0)) (sqrt x)))
  (pow (* (sqrt (- x 1.0)) (sqrt x)) 3)
  (* (cbrt (* (sqrt (- x 1.0)) (sqrt x))) (cbrt (* (sqrt (- x 1.0)) (sqrt x))))
  (cbrt (* (sqrt (- x 1.0)) (sqrt x)))
  (pow (* (sqrt (- x 1.0)) (sqrt x)) 3)
  (* x (- x 1.0))
  (sqrt (* (sqrt (- x 1.0)) (sqrt x)))
  (sqrt (* (sqrt (- x 1.0)) (sqrt x)))
  (* (sqrt (sqrt (- x 1.0))) (sqrt (sqrt x)))
  (* (sqrt (sqrt (- x 1.0))) (sqrt (sqrt x)))
  (* (sqrt (sqrt (- x 1.0))) (sqrt (sqrt x)))
  (* (sqrt (sqrt (- x 1.0))) (sqrt (sqrt x)))
  (* (sqrt (sqrt (- x 1.0))) (sqrt (sqrt x)))
  (* (sqrt (sqrt (- x 1.0))) (sqrt (sqrt x)))
  (* (sqrt (sqrt (- x 1.0))) (sqrt (sqrt x)))
  (* (sqrt (sqrt (- x 1.0))) (sqrt (sqrt x)))
  (* (sqrt (- x 1.0)) (* (cbrt (sqrt x)) (cbrt (sqrt x))))
  (* (sqrt (- x 1.0)) (fabs (cbrt x)))
  (* (sqrt (- x 1.0)) (sqrt (sqrt x)))
  (sqrt (- x 1.0))
  (* (sqrt (- x 1.0)) (sqrt (sqrt x)))
  (sqrt (- x 1.0))
  (* (cbrt (sqrt (- x 1.0))) (sqrt x))
  (* (sqrt (cbrt (- x 1.0))) (sqrt x))
  (* (sqrt (sqrt (- x 1.0))) (sqrt x))
  (* (sqrt (- x 1.0)) (sqrt x))
  (* (sqrt (- (sqrt x) (sqrt 1.0))) (sqrt x))
  (* (sqrt (- x 1.0)) (sqrt x))
  (* (sqrt (sqrt (- x 1.0))) (sqrt x))
  (* (sqrt (- x 1.0)) (sqrt x))
  (* (sqrt (- (pow x 3) (pow 1.0 3))) (sqrt x))
  (* (sqrt (- (* x x) (* 1.0 1.0))) (sqrt x))
  (* +nan.0 (- (- (pow x 3) x) (pow x 2)))
  (- x (+ 0.5 (/ 0.125 x)))
  (- (/ (- +nan.0 (/ +nan.0 x)) x) +nan.0)
2.148 * * * [progress]: adding candidates to table
2.218 * * [progress]: iteration 2 / 4
2.218 * * * [progress]: picking best candidate
2.219 * * * * [pick]: Picked  #<alt (λ (x) (- x (+ 0.5 (/ 0.125 x))))>
2.220 * * * [progress]: localizing error
2.224 * * * [progress]: generating rewritten candidates
2.224 * * * [progress]: generating series expansions
2.224 * * * [progress]: simplifying candidates
2.224 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
2.225 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
2.225 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
2.225 * [simplify]: Simplified to:
   
2.225 * * * [progress]: adding candidates to table
2.225 * [progress]: [Phase 3 of 3] Extracting.
2.226 * * [regime]: Finding splitpoints for: (#<alt (λ (x) (- x (+ 0.5 (/ 0.125 x))))> #<alt (λ (x) (* (sqrt (- x 1.0)) (sqrt x)))>)
2.226 * * * [regime-changes]: Trying 2 branch expressions: ((* (sqrt (- x 1.0)) (sqrt x)) x)
2.227 * * * * [regimes]: Trying to branch on (* (sqrt (- x 1.0)) (sqrt x)) from (#<alt (λ (x) (- x (+ 0.5 (/ 0.125 x))))> #<alt (λ (x) (* (sqrt (- x 1.0)) (sqrt x)))>)
2.248 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x) (- x (+ 0.5 (/ 0.125 x))))> #<alt (λ (x) (* (sqrt (- x 1.0)) (sqrt x)))>)
2.258 * * * [regime]: Found split indices: #<option (#s(si 0 255))>
2.258 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- x (+ 0.5 (/ 0.125 x)))
2.258 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
2.259 * * [simplify]: iteration  1 :  7  enodes  (cost  7 )
2.259 * * [simplify]: iteration  done :  7  enodes  (cost  7 )
2.259 * [simplify]: Simplified to:
   (- x (+ 0.5 (/ 0.125 x)))
3.477 * [regime-testing]: Baseline error score: 0.39300144971517914
3.477 * [regime-testing]: Oracle error score: 0.006073879547533586
3.479 * [regime-testing]: End program error score: 0.39300144971517914