0.844 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.291 * * * [progress]: [2/2] Setting up program.
0.294 * [progress]: [Phase 2 of 3] Improving.
0.297 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (sqrt (- x 1.0)) (sqrt x))
0.302 * * [simplify]: iteration  0 :  9  enodes  (cost  4 )
0.304 * * [simplify]: iteration  1 :  10  enodes  (cost  4 )
0.305 * * [simplify]: iteration  2 :  10  enodes  (cost  4 )
0.305 * [simplify]: Simplified to:
   (* (sqrt (- x 1.0)) (sqrt x))
0.307 * * [progress]: iteration 1 / 4
0.307 * * * [progress]: picking best candidate
0.309 * * * * [pick]: Picked  #<alt (λ (x) (* (sqrt (- x 1.0)) (sqrt x)))>
0.309 * * * [progress]: localizing error
0.317 * * * [progress]: generating rewritten candidates
0.317 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.330 * * * [progress]: generating series expansions
0.331 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.335 * [approximate]: Taking taylor expansion of (sqrt (* (- x 1.0) x)) in (x) around 0
0.336 * [taylor]: Taking taylor expansion of (sqrt (* (- x 1.0) x)) in x
0.336 * [taylor]: Taking taylor expansion of (* (- x 1.0) x) in x
0.336 * [taylor]: Taking taylor expansion of (- x 1.0) in x
0.336 * [taylor]: Taking taylor expansion of x in x
0.336 * [taylor]: Taking taylor expansion of 1.0 in x
0.336 * [taylor]: Taking taylor expansion of x in x
0.342 * [taylor]: Taking taylor expansion of (sqrt (* (- x 1.0) x)) in x
0.342 * [taylor]: Taking taylor expansion of (* (- x 1.0) x) in x
0.342 * [taylor]: Taking taylor expansion of (- x 1.0) in x
0.342 * [taylor]: Taking taylor expansion of x in x
0.342 * [taylor]: Taking taylor expansion of 1.0 in x
0.342 * [taylor]: Taking taylor expansion of x in x
0.371 * [approximate]: Taking taylor expansion of (sqrt (/ (- (/ 1 x) 1.0) x)) in (x) around 0
0.371 * [taylor]: Taking taylor expansion of (sqrt (/ (- (/ 1 x) 1.0) x)) in x
0.371 * [taylor]: Taking taylor expansion of (/ (- (/ 1 x) 1.0) x) in x
0.372 * [taylor]: Taking taylor expansion of (- (/ 1 x) 1.0) in x
0.372 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.372 * [taylor]: Taking taylor expansion of x in x
0.372 * [taylor]: Taking taylor expansion of 1.0 in x
0.372 * [taylor]: Taking taylor expansion of x in x
0.377 * [taylor]: Taking taylor expansion of (sqrt (/ (- (/ 1 x) 1.0) x)) in x
0.377 * [taylor]: Taking taylor expansion of (/ (- (/ 1 x) 1.0) x) in x
0.377 * [taylor]: Taking taylor expansion of (- (/ 1 x) 1.0) in x
0.377 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.377 * [taylor]: Taking taylor expansion of x in x
0.377 * [taylor]: Taking taylor expansion of 1.0 in x
0.377 * [taylor]: Taking taylor expansion of x in x
0.385 * [approximate]: Taking taylor expansion of (* (sqrt (- (+ 1.0 (/ 1 x)))) (sqrt (/ -1 x))) in (x) around 0
0.385 * [taylor]: Taking taylor expansion of (* (sqrt (- (+ 1.0 (/ 1 x)))) (sqrt (/ -1 x))) in x
0.385 * [taylor]: Taking taylor expansion of (sqrt (- (+ 1.0 (/ 1 x)))) in x
0.385 * [taylor]: Taking taylor expansion of (- (+ 1.0 (/ 1 x))) in x
0.385 * [taylor]: Taking taylor expansion of (+ 1.0 (/ 1 x)) in x
0.385 * [taylor]: Taking taylor expansion of 1.0 in x
0.385 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.385 * [taylor]: Taking taylor expansion of x in x
0.387 * [taylor]: Taking taylor expansion of (sqrt (/ -1 x)) in x
0.388 * [taylor]: Taking taylor expansion of (/ -1 x) in x
0.388 * [taylor]: Taking taylor expansion of -1 in x
0.388 * [taylor]: Taking taylor expansion of x in x
0.389 * [taylor]: Taking taylor expansion of (* (sqrt (- (+ 1.0 (/ 1 x)))) (sqrt (/ -1 x))) in x
0.389 * [taylor]: Taking taylor expansion of (sqrt (- (+ 1.0 (/ 1 x)))) in x
0.389 * [taylor]: Taking taylor expansion of (- (+ 1.0 (/ 1 x))) in x
0.389 * [taylor]: Taking taylor expansion of (+ 1.0 (/ 1 x)) in x
0.389 * [taylor]: Taking taylor expansion of 1.0 in x
0.389 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.389 * [taylor]: Taking taylor expansion of x in x
0.391 * [taylor]: Taking taylor expansion of (sqrt (/ -1 x)) in x
0.391 * [taylor]: Taking taylor expansion of (/ -1 x) in x
0.391 * [taylor]: Taking taylor expansion of -1 in x
0.391 * [taylor]: Taking taylor expansion of x in x
0.419 * * * [progress]: simplifying candidates
0.420 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (expm1 (* (sqrt (- x 1.0)) (sqrt x)))
  (log1p (* (sqrt (- x 1.0)) (sqrt x)))
  (* (- 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)))))
0.424 * * [simplify]: iteration  0 :  188  enodes  (cost  226 )
0.427 * * [simplify]: iteration  1 :  635  enodes  (cost  215 )
0.440 * * [simplify]: iteration  2 :  2636  enodes  (cost  210 )
0.497 * * [simplify]: iteration  3 :  5002  enodes  (cost  210 )
0.498 * [simplify]: Simplified to:
   (expm1 (* (sqrt (- x 1.0)) (sqrt x)))
  (log1p (* (sqrt (- x 1.0)) (sqrt x)))
  (* (- x 1.0) x)
  (* (sqrt (- x 1.0)) (sqrt x))
  (* (- x 1.0) x)
  (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 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))))
  (* (fabs (cbrt x)) (sqrt (- x 1.0)))
  (* (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))
  (fma (- (pow x 2)) +nan.0 (* +nan.0 (- (pow x 3) x)))
  (- x (fma 0.125 (/ 1 x) 0.5))
  (- (- (/ +nan.0 x) +nan.0) (/ +nan.0 (pow x 2)))
0.499 * * * [progress]: adding candidates to table
0.569 * * [progress]: iteration 2 / 4
0.569 * * * [progress]: picking best candidate
0.572 * * * * [pick]: Picked  #<alt (λ (x) (- x (fma 0.125 (/ 1 x) 0.5)))>
0.572 * * * [progress]: localizing error
0.577 * * * [progress]: generating rewritten candidates
0.577 * * * [progress]: generating series expansions
0.577 * * * [progress]: simplifying candidates
0.577 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.579 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.579 * [simplify]: Simplified to:
   
0.579 * * * [progress]: adding candidates to table
0.580 * * [progress]: iteration 3 / 4
0.580 * * * [progress]: picking best candidate
0.581 * * * * [pick]: Picked  #<alt (λ (x) (sqrt (* (- x 1.0) x)))>
0.581 * * * [progress]: localizing error
0.586 * * * [progress]: generating rewritten candidates
0.586 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.591 * * * [progress]: generating series expansions
0.591 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.591 * [approximate]: Taking taylor expansion of (sqrt (* (- x 1.0) x)) in (x) around 0
0.591 * [taylor]: Taking taylor expansion of (sqrt (* (- x 1.0) x)) in x
0.591 * [taylor]: Taking taylor expansion of (* (- x 1.0) x) in x
0.591 * [taylor]: Taking taylor expansion of (- x 1.0) in x
0.591 * [taylor]: Taking taylor expansion of x in x
0.591 * [taylor]: Taking taylor expansion of 1.0 in x
0.591 * [taylor]: Taking taylor expansion of x in x
0.596 * [taylor]: Taking taylor expansion of (sqrt (* (- x 1.0) x)) in x
0.596 * [taylor]: Taking taylor expansion of (* (- x 1.0) x) in x
0.596 * [taylor]: Taking taylor expansion of (- x 1.0) in x
0.596 * [taylor]: Taking taylor expansion of x in x
0.596 * [taylor]: Taking taylor expansion of 1.0 in x
0.596 * [taylor]: Taking taylor expansion of x in x
0.611 * [approximate]: Taking taylor expansion of (sqrt (/ (- (/ 1 x) 1.0) x)) in (x) around 0
0.612 * [taylor]: Taking taylor expansion of (sqrt (/ (- (/ 1 x) 1.0) x)) in x
0.612 * [taylor]: Taking taylor expansion of (/ (- (/ 1 x) 1.0) x) in x
0.612 * [taylor]: Taking taylor expansion of (- (/ 1 x) 1.0) in x
0.612 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.612 * [taylor]: Taking taylor expansion of x in x
0.612 * [taylor]: Taking taylor expansion of 1.0 in x
0.612 * [taylor]: Taking taylor expansion of x in x
0.617 * [taylor]: Taking taylor expansion of (sqrt (/ (- (/ 1 x) 1.0) x)) in x
0.617 * [taylor]: Taking taylor expansion of (/ (- (/ 1 x) 1.0) x) in x
0.617 * [taylor]: Taking taylor expansion of (- (/ 1 x) 1.0) in x
0.617 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.617 * [taylor]: Taking taylor expansion of x in x
0.617 * [taylor]: Taking taylor expansion of 1.0 in x
0.617 * [taylor]: Taking taylor expansion of x in x
0.625 * [approximate]: Taking taylor expansion of (sqrt (/ (+ 1.0 (/ 1 x)) x)) in (x) around 0
0.625 * [taylor]: Taking taylor expansion of (sqrt (/ (+ 1.0 (/ 1 x)) x)) in x
0.625 * [taylor]: Taking taylor expansion of (/ (+ 1.0 (/ 1 x)) x) in x
0.625 * [taylor]: Taking taylor expansion of (+ 1.0 (/ 1 x)) in x
0.625 * [taylor]: Taking taylor expansion of 1.0 in x
0.625 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.625 * [taylor]: Taking taylor expansion of x in x
0.625 * [taylor]: Taking taylor expansion of x in x
0.629 * [taylor]: Taking taylor expansion of (sqrt (/ (+ 1.0 (/ 1 x)) x)) in x
0.629 * [taylor]: Taking taylor expansion of (/ (+ 1.0 (/ 1 x)) x) in x
0.629 * [taylor]: Taking taylor expansion of (+ 1.0 (/ 1 x)) in x
0.629 * [taylor]: Taking taylor expansion of 1.0 in x
0.629 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.629 * [taylor]: Taking taylor expansion of x in x
0.629 * [taylor]: Taking taylor expansion of x in x
0.636 * * * [progress]: simplifying candidates
0.636 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (expm1 (sqrt (* (- x 1.0) x)))
  (log1p (sqrt (* (- x 1.0) x)))
  (log (sqrt (* (- x 1.0) x)))
  (exp (sqrt (* (- x 1.0) x)))
  (* (cbrt (sqrt (* (- x 1.0) x))) (cbrt (sqrt (* (- x 1.0) x))))
  (cbrt (sqrt (* (- x 1.0) x)))
  (* (* (sqrt (* (- x 1.0) x)) (sqrt (* (- x 1.0) x))) (sqrt (* (- x 1.0) x)))
  (sqrt (- x 1.0))
  (sqrt x)
  (sqrt (* (- (pow x 3) (pow 1.0 3)) x))
  (sqrt (+ (* x x) (+ (* 1.0 1.0) (* x 1.0))))
  (sqrt (* (- (* x x) (* 1.0 1.0)) x))
  (sqrt (+ x 1.0))
  (/ 1 2)
  (/ 1 2)
  (sqrt (sqrt (* (- x 1.0) x)))
  (sqrt (sqrt (* (- x 1.0) x)))
  (- (+ (* +nan.0 (pow x 2)) (- (+ (* +nan.0 (pow x 3)) (- (* +nan.0 x))))))
  (- x (+ 0.5 (* 0.125 (/ 1 x))))
  (- (+ 0.5 (* 0.125 (/ 1 x))) x)
0.639 * * [simplify]: iteration  0 :  118  enodes  (cost  82 )
0.642 * * [simplify]: iteration  1 :  306  enodes  (cost  77 )
0.648 * * [simplify]: iteration  2 :  1115  enodes  (cost  74 )
0.674 * * [simplify]: iteration  3 :  4409  enodes  (cost  73 )
0.797 * * [simplify]: iteration  4 :  5001  enodes  (cost  73 )
0.798 * [simplify]: Simplified to:
   (expm1 (sqrt (* (- x 1.0) x)))
  (log1p (sqrt (* (- x 1.0) x)))
  (log (sqrt (* (- x 1.0) x)))
  (exp (sqrt (* (- x 1.0) x)))
  (* (cbrt (sqrt (* (- x 1.0) x))) (cbrt (sqrt (* (- x 1.0) x))))
  (cbrt (sqrt (* (- x 1.0) x)))
  (pow (sqrt (* (- x 1.0) x)) 3)
  (sqrt (- x 1.0))
  (pow x 1/2)
  (sqrt (* (- (pow x 3) (pow 1.0 3)) x))
  (sqrt (+ (* x x) (+ (* 1.0 1.0) (* x 1.0))))
  (sqrt (* (- (* x x) (* 1.0 1.0)) x))
  (sqrt (+ x 1.0))
  1/2
  1/2
  (sqrt (sqrt (* (- x 1.0) x)))
  (sqrt (sqrt (* (- x 1.0) x)))
  (* +nan.0 (fma (- x) x (- (pow x 3) x)))
  (- x (fma 0.125 (/ 1 x) 0.5))
  (fma 0.125 (/ 1 x) (- 0.5 x))
0.798 * * * [progress]: adding candidates to table
0.827 * [progress]: [Phase 3 of 3] Extracting.
0.828 * * [regime]: Finding splitpoints for: (#<alt (λ (x) (* (sqrt (- x 1.0)) (sqrt x)))> #<alt (λ (x) (- x (fma 0.125 (/ 1 x) 0.5)))> #<alt (λ (x) (sqrt (* (- x 1.0) x)))>)
0.828 * * * [regime-changes]: Trying 2 branch expressions: ((* (sqrt (- x 1.0)) (sqrt x)) x)
0.829 * * * * [regimes]: Trying to branch on (* (sqrt (- x 1.0)) (sqrt x)) from (#<alt (λ (x) (* (sqrt (- x 1.0)) (sqrt x)))> #<alt (λ (x) (- x (fma 0.125 (/ 1 x) 0.5)))> #<alt (λ (x) (sqrt (* (- x 1.0) x)))>)
0.852 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x) (* (sqrt (- x 1.0)) (sqrt x)))> #<alt (λ (x) (- x (fma 0.125 (/ 1 x) 0.5)))> #<alt (λ (x) (sqrt (* (- x 1.0) x)))>)
0.864 * * * [regime]: Found split indices: #<option (#s(si 0 255))>
0.864 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (sqrt (- x 1.0)) (sqrt x))
0.865 * * [simplify]: iteration  0 :  7  enodes  (cost  4 )
0.865 * * [simplify]: iteration  1 :  7  enodes  (cost  4 )
0.865 * [simplify]: Simplified to:
   (* (sqrt (- x 1.0)) (sqrt x))
1.879 * [regime-testing]: Baseline error score: 0.48668583572946617
1.879 * [regime-testing]: Oracle error score: 0.0005000625078134767
1.881 * [regime-testing]: End program error score: 0.48668583572946617