0.845 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.310 * * * [progress]: [2/2] Setting up program.
0.313 * [progress]: [Phase 2 of 3] Improving.
0.315 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (sqrt (- x 1.0)) (sqrt x))
0.319 * * [simplify]: iteration  0 :  9  enodes  (cost  4 )
0.320 * * [simplify]: iteration  1 :  10  enodes  (cost  4 )
0.321 * * [simplify]: iteration  2 :  10  enodes  (cost  4 )
0.322 * [simplify]: Simplified to:
   (* (sqrt (- x 1.0)) (sqrt x))
0.323 * * [progress]: iteration 1 / 4
0.323 * * * [progress]: picking best candidate
0.325 * * * * [pick]: Picked  #<alt (λ (x) (* (sqrt (- x 1.0)) (sqrt x)))>
0.325 * * * [progress]: localizing error
0.332 * * * [progress]: generating rewritten candidates
0.332 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.350 * * * [progress]: generating series expansions
0.350 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.355 * [approximate]: Taking taylor expansion of (sqrt (* (- x 1.0) x)) in (x) around 0
0.355 * [taylor]: Taking taylor expansion of (sqrt (* (- x 1.0) x)) in x
0.355 * [taylor]: Taking taylor expansion of (* (- x 1.0) x) in x
0.356 * [taylor]: Taking taylor expansion of (- x 1.0) 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 (* (- x 1.0) x)) in x
0.361 * [taylor]: Taking taylor expansion of (* (- x 1.0) x) in x
0.361 * [taylor]: Taking taylor expansion of (- x 1.0) in x
0.361 * [taylor]: Taking taylor expansion of x in x
0.361 * [taylor]: Taking taylor expansion of 1.0 in x
0.361 * [taylor]: Taking taylor expansion of x in x
0.383 * [approximate]: Taking taylor expansion of (sqrt (/ (- (/ 1 x) 1.0) x)) in (x) around 0
0.383 * [taylor]: Taking taylor expansion of (sqrt (/ (- (/ 1 x) 1.0) x)) in x
0.383 * [taylor]: Taking taylor expansion of (/ (- (/ 1 x) 1.0) x) in x
0.383 * [taylor]: Taking taylor expansion of (- (/ 1 x) 1.0) in x
0.383 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.383 * [taylor]: Taking taylor expansion of x in x
0.383 * [taylor]: Taking taylor expansion of 1.0 in x
0.383 * [taylor]: Taking taylor expansion of x in x
0.388 * [taylor]: Taking taylor expansion of (sqrt (/ (- (/ 1 x) 1.0) x)) in x
0.388 * [taylor]: Taking taylor expansion of (/ (- (/ 1 x) 1.0) x) in x
0.388 * [taylor]: Taking taylor expansion of (- (/ 1 x) 1.0) in x
0.388 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.388 * [taylor]: Taking taylor expansion of x in x
0.389 * [taylor]: Taking taylor expansion of 1.0 in x
0.389 * [taylor]: Taking taylor expansion of x in x
0.396 * [approximate]: Taking taylor expansion of (* (sqrt (- (+ 1.0 (/ 1 x)))) (sqrt (/ -1 x))) in (x) around 0
0.396 * [taylor]: Taking taylor expansion of (* (sqrt (- (+ 1.0 (/ 1 x)))) (sqrt (/ -1 x))) in x
0.397 * [taylor]: Taking taylor expansion of (sqrt (- (+ 1.0 (/ 1 x)))) in x
0.397 * [taylor]: Taking taylor expansion of (- (+ 1.0 (/ 1 x))) in x
0.397 * [taylor]: Taking taylor expansion of (+ 1.0 (/ 1 x)) in x
0.397 * [taylor]: Taking taylor expansion of 1.0 in x
0.397 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.397 * [taylor]: Taking taylor expansion of x in x
0.399 * [taylor]: Taking taylor expansion of (sqrt (/ -1 x)) in x
0.399 * [taylor]: Taking taylor expansion of (/ -1 x) in x
0.399 * [taylor]: Taking taylor expansion of -1 in x
0.399 * [taylor]: Taking taylor expansion of x in x
0.400 * [taylor]: Taking taylor expansion of (* (sqrt (- (+ 1.0 (/ 1 x)))) (sqrt (/ -1 x))) in x
0.400 * [taylor]: Taking taylor expansion of (sqrt (- (+ 1.0 (/ 1 x)))) in x
0.400 * [taylor]: Taking taylor expansion of (- (+ 1.0 (/ 1 x))) in x
0.400 * [taylor]: Taking taylor expansion of (+ 1.0 (/ 1 x)) in x
0.400 * [taylor]: Taking taylor expansion of 1.0 in x
0.400 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.400 * [taylor]: Taking taylor expansion of x in x
0.402 * [taylor]: Taking taylor expansion of (sqrt (/ -1 x)) in x
0.402 * [taylor]: Taking taylor expansion of (/ -1 x) in x
0.402 * [taylor]: Taking taylor expansion of -1 in x
0.402 * [taylor]: Taking taylor expansion of x in x
0.431 * * * [progress]: simplifying candidates
0.432 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (- 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)))))
0.435 * * [simplify]: iteration  0 :  181  enodes  (cost  216 )
0.439 * * [simplify]: iteration  1 :  610  enodes  (cost  206 )
0.451 * * [simplify]: iteration  2 :  2471  enodes  (cost  201 )
0.503 * * [simplify]: iteration  3 :  5002  enodes  (cost  201 )
0.505 * [simplify]: Simplified to:
   (* (- 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))
  (* +nan.0 (+ (- (pow x 2)) (- (pow x 3) x)))
  (- x (+ 0.5 (* 0.125 (/ 1 x))))
  (- (- (/ +nan.0 x) +nan.0) (/ +nan.0 (pow x 2)))
0.505 * * * [progress]: adding candidates to table
0.570 * * [progress]: iteration 2 / 4
0.570 * * * [progress]: picking best candidate
0.571 * * * * [pick]: Picked  #<alt (λ (x) (- x (+ 0.5 (* 0.125 (/ 1 x)))))>
0.571 * * * [progress]: localizing error
0.577 * * * [progress]: generating rewritten candidates
0.577 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.585 * * * [progress]: generating series expansions
0.585 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.586 * [approximate]: Taking taylor expansion of (- x (+ 0.5 (* 0.125 (/ 1 x)))) in (x) around 0
0.586 * [taylor]: Taking taylor expansion of (- x (+ 0.5 (* 0.125 (/ 1 x)))) in x
0.586 * [taylor]: Taking taylor expansion of x in x
0.586 * [taylor]: Taking taylor expansion of (+ 0.5 (* 0.125 (/ 1 x))) in x
0.586 * [taylor]: Taking taylor expansion of 0.5 in x
0.586 * [taylor]: Taking taylor expansion of (* 0.125 (/ 1 x)) in x
0.586 * [taylor]: Taking taylor expansion of 0.125 in x
0.586 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.586 * [taylor]: Taking taylor expansion of x in x
0.586 * [taylor]: Taking taylor expansion of (- x (+ 0.5 (* 0.125 (/ 1 x)))) in x
0.586 * [taylor]: Taking taylor expansion of x in x
0.586 * [taylor]: Taking taylor expansion of (+ 0.5 (* 0.125 (/ 1 x))) in x
0.586 * [taylor]: Taking taylor expansion of 0.5 in x
0.586 * [taylor]: Taking taylor expansion of (* 0.125 (/ 1 x)) in x
0.586 * [taylor]: Taking taylor expansion of 0.125 in x
0.586 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.586 * [taylor]: Taking taylor expansion of x in x
0.593 * [approximate]: Taking taylor expansion of (- (/ 1 x) (+ 0.5 (* 0.125 x))) in (x) around 0
0.593 * [taylor]: Taking taylor expansion of (- (/ 1 x) (+ 0.5 (* 0.125 x))) in x
0.593 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.593 * [taylor]: Taking taylor expansion of x in x
0.593 * [taylor]: Taking taylor expansion of (+ 0.5 (* 0.125 x)) in x
0.593 * [taylor]: Taking taylor expansion of 0.5 in x
0.593 * [taylor]: Taking taylor expansion of (* 0.125 x) in x
0.593 * [taylor]: Taking taylor expansion of 0.125 in x
0.593 * [taylor]: Taking taylor expansion of x in x
0.593 * [taylor]: Taking taylor expansion of (- (/ 1 x) (+ 0.5 (* 0.125 x))) in x
0.593 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.593 * [taylor]: Taking taylor expansion of x in x
0.594 * [taylor]: Taking taylor expansion of (+ 0.5 (* 0.125 x)) in x
0.594 * [taylor]: Taking taylor expansion of 0.5 in x
0.594 * [taylor]: Taking taylor expansion of (* 0.125 x) in x
0.594 * [taylor]: Taking taylor expansion of 0.125 in x
0.594 * [taylor]: Taking taylor expansion of x in x
0.599 * [approximate]: Taking taylor expansion of (- (* 0.125 x) (+ 0.5 (/ 1 x))) in (x) around 0
0.599 * [taylor]: Taking taylor expansion of (- (* 0.125 x) (+ 0.5 (/ 1 x))) in x
0.599 * [taylor]: Taking taylor expansion of (* 0.125 x) in x
0.599 * [taylor]: Taking taylor expansion of 0.125 in x
0.599 * [taylor]: Taking taylor expansion of x in x
0.599 * [taylor]: Taking taylor expansion of (+ 0.5 (/ 1 x)) in x
0.599 * [taylor]: Taking taylor expansion of 0.5 in x
0.599 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.599 * [taylor]: Taking taylor expansion of x in x
0.600 * [taylor]: Taking taylor expansion of (- (* 0.125 x) (+ 0.5 (/ 1 x))) in x
0.600 * [taylor]: Taking taylor expansion of (* 0.125 x) in x
0.600 * [taylor]: Taking taylor expansion of 0.125 in x
0.600 * [taylor]: Taking taylor expansion of x in x
0.600 * [taylor]: Taking taylor expansion of (+ 0.5 (/ 1 x)) in x
0.600 * [taylor]: Taking taylor expansion of 0.5 in x
0.600 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.600 * [taylor]: Taking taylor expansion of x in x
0.605 * * * [progress]: simplifying candidates
0.606 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ (exp x) (* (exp 0.5) (exp (* 0.125 (/ 1 x)))))
  (/ (exp x) (exp (+ 0.5 (* 0.125 (/ 1 x)))))
  (log (- x (+ 0.5 (* 0.125 (/ 1 x)))))
  (exp (- x (+ 0.5 (* 0.125 (/ 1 x)))))
  (* (cbrt (- x (+ 0.5 (* 0.125 (/ 1 x))))) (cbrt (- x (+ 0.5 (* 0.125 (/ 1 x))))))
  (cbrt (- x (+ 0.5 (* 0.125 (/ 1 x)))))
  (* (* (- x (+ 0.5 (* 0.125 (/ 1 x)))) (- x (+ 0.5 (* 0.125 (/ 1 x))))) (- x (+ 0.5 (* 0.125 (/ 1 x)))))
  (sqrt (- x (+ 0.5 (* 0.125 (/ 1 x)))))
  (sqrt (- x (+ 0.5 (* 0.125 (/ 1 x)))))
  (- (pow x 3) (pow (+ 0.5 (* 0.125 (/ 1 x))) 3))
  (+ (* x x) (+ (* (+ 0.5 (* 0.125 (/ 1 x))) (+ 0.5 (* 0.125 (/ 1 x)))) (* x (+ 0.5 (* 0.125 (/ 1 x))))))
  (- (+ 0.5 (* 0.125 (/ 1 x))))
  (- (* x x) (* (+ 0.5 (* 0.125 (/ 1 x))) (+ 0.5 (* 0.125 (/ 1 x)))))
  (+ x (+ 0.5 (* 0.125 (/ 1 x))))
  (+ (sqrt x) (sqrt (+ 0.5 (* 0.125 (/ 1 x)))))
  (- (sqrt x) (sqrt (+ 0.5 (* 0.125 (/ 1 x)))))
  (- x (+ 0.5 (* 0.125 (/ 1 x))))
  (- x 0.5)
  (- (+ 0.5 (* 0.125 (/ 1 x))))
  (- x (+ 0.5 (* 0.125 (/ 1 x))))
  (- x (+ 0.5 (* 0.125 (/ 1 x))))
  (- x (+ 0.5 (* 0.125 (/ 1 x))))
0.609 * * [simplify]: iteration  0 :  96  enodes  (cost  126 )
0.611 * * [simplify]: iteration  1 :  283  enodes  (cost  117 )
0.616 * * [simplify]: iteration  2 :  1070  enodes  (cost  115 )
0.640 * * [simplify]: iteration  3 :  5001  enodes  (cost  110 )
0.641 * [simplify]: Simplified to:
   (exp (- x (+ 0.5 (* 0.125 (/ 1 x)))))
  (exp (- x (+ 0.5 (* 0.125 (/ 1 x)))))
  (log (- x (+ 0.5 (* 0.125 (/ 1 x)))))
  (exp (- x (+ 0.5 (* 0.125 (/ 1 x)))))
  (* (cbrt (- x (+ 0.5 (* 0.125 (/ 1 x))))) (cbrt (- x (+ 0.5 (* 0.125 (/ 1 x))))))
  (cbrt (- x (+ 0.5 (* 0.125 (/ 1 x)))))
  (pow (- x (+ 0.5 (* 0.125 (/ 1 x)))) 3)
  (sqrt (- x (+ 0.5 (* 0.125 (/ 1 x)))))
  (sqrt (- x (+ 0.5 (* 0.125 (/ 1 x)))))
  (- (pow x 3) (pow (+ 0.5 (* 0.125 (/ 1 x))) 3))
  (+ (* (+ 0.5 (* 0.125 (/ 1 x))) (+ (+ 0.5 (* 0.125 (/ 1 x))) x)) (* x x))
  (- (/ (- 0.125) x) 0.5)
  (- (* x x) (* (+ 0.5 (* 0.125 (/ 1 x))) (+ 0.5 (* 0.125 (/ 1 x)))))
  (+ (+ x (/ 0.125 x)) 0.5)
  (+ (sqrt x) (sqrt (+ 0.5 (* 0.125 (/ 1 x)))))
  (- (sqrt x) (sqrt (+ 0.5 (* 0.125 (/ 1 x)))))
  (- (- x (/ 0.125 x)) 0.5)
  (- x 0.5)
  (- (/ (- 0.125) x) 0.5)
  (- (- x (/ 0.125 x)) 0.5)
  (- (- x (/ 0.125 x)) 0.5)
  (- (- x (/ 0.125 x)) 0.5)
0.641 * * * [progress]: adding candidates to table
0.671 * [progress]: [Phase 3 of 3] Extracting.
0.671 * * [regime]: Finding splitpoints for: (#<alt (λ (x) (- x (+ 0.5 (* 0.125 (/ 1 x)))))> #<alt (λ (x) (* (sqrt (- x 1.0)) (sqrt x)))>)
0.674 * * * [regime-changes]: Trying 2 branch expressions: ((* (sqrt (- x 1.0)) (sqrt x)) x)
0.674 * * * * [regimes]: Trying to branch on (* (sqrt (- x 1.0)) (sqrt x)) from (#<alt (λ (x) (- x (+ 0.5 (* 0.125 (/ 1 x)))))> #<alt (λ (x) (* (sqrt (- x 1.0)) (sqrt x)))>)
0.692 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x) (- x (+ 0.5 (* 0.125 (/ 1 x)))))> #<alt (λ (x) (* (sqrt (- x 1.0)) (sqrt x)))>)
0.701 * * * [regime]: Found split indices: #<option (#s(si 0 255))>
0.702 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- x (+ 0.5 (* 0.125 (/ 1 x))))
0.703 * * [simplify]: iteration  0 :  12  enodes  (cost  4 )
0.703 * * [simplify]: iteration  1 :  12  enodes  (cost  4 )
0.703 * [simplify]: Simplified to:
   (- x (+ 0.5 (* 0.125 (/ 1 x))))
2.457 * [regime-testing]: Baseline error score: 0.4178070708259296
2.457 * [regime-testing]: Oracle error score: 0.004875609451181397
2.458 * [regime-testing]: End program error score: 0.4178070708259296