0.850 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.274 * * * [progress]: [2/2] Setting up program.
0.277 * [progress]: [Phase 2 of 3] Improving.
0.280 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (sqrt (- x 1.0)) (sqrt x))
0.285 * * [simplify]: iteration  0 :  9  enodes  (cost  4 )
0.286 * * [simplify]: iteration  1 :  10  enodes  (cost  4 )
0.287 * * [simplify]: iteration  2 :  10  enodes  (cost  4 )
0.288 * [simplify]: Simplified to:
   (* (sqrt (- x 1.0)) (sqrt x))
0.289 * * [progress]: iteration 1 / 4
0.290 * * * [progress]: picking best candidate
0.292 * * * * [pick]: Picked  #<alt (λ (x) (* (sqrt (- x 1.0)) (sqrt x)))>
0.292 * * * [progress]: localizing error
0.299 * * * [progress]: generating rewritten candidates
0.299 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.312 * * * [progress]: generating series expansions
0.312 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.316 * [approximate]: Taking taylor expansion of (sqrt (* (- x 1.0) x)) in (x) around 0
0.317 * [taylor]: Taking taylor expansion of (sqrt (* (- x 1.0) x)) in x
0.317 * [taylor]: Taking taylor expansion of (* (- x 1.0) x) in x
0.317 * [taylor]: Taking taylor expansion of (- x 1.0) in x
0.317 * [taylor]: Taking taylor expansion of x in x
0.317 * [taylor]: Taking taylor expansion of 1.0 in x
0.317 * [taylor]: Taking taylor expansion of x in x
0.322 * [taylor]: Taking taylor expansion of (sqrt (* (- x 1.0) x)) in x
0.322 * [taylor]: Taking taylor expansion of (* (- x 1.0) x) in x
0.322 * [taylor]: Taking taylor expansion of (- x 1.0) in x
0.322 * [taylor]: Taking taylor expansion of x in x
0.322 * [taylor]: Taking taylor expansion of 1.0 in x
0.322 * [taylor]: Taking taylor expansion of x in x
0.336 * [approximate]: Taking taylor expansion of (sqrt (/ (- (/ 1 x) 1.0) x)) in (x) around 0
0.336 * [taylor]: Taking taylor expansion of (sqrt (/ (- (/ 1 x) 1.0) x)) in x
0.336 * [taylor]: Taking taylor expansion of (/ (- (/ 1 x) 1.0) x) in x
0.336 * [taylor]: Taking taylor expansion of (- (/ 1 x) 1.0) in x
0.336 * [taylor]: Taking taylor expansion of (/ 1 x) 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
0.355 * [taylor]: Taking taylor expansion of (sqrt (/ (- (/ 1 x) 1.0) x)) in x
0.355 * [taylor]: Taking taylor expansion of (/ (- (/ 1 x) 1.0) x) in x
0.355 * [taylor]: Taking taylor expansion of (- (/ 1 x) 1.0) in x
0.355 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.355 * [taylor]: Taking taylor expansion of x in x
0.355 * [taylor]: Taking taylor expansion of 1.0 in x
0.355 * [taylor]: Taking taylor expansion of x in x
0.363 * [approximate]: Taking taylor expansion of (* (sqrt (- (+ 1.0 (/ 1 x)))) (sqrt (/ -1 x))) in (x) around 0
0.363 * [taylor]: Taking taylor expansion of (* (sqrt (- (+ 1.0 (/ 1 x)))) (sqrt (/ -1 x))) in x
0.363 * [taylor]: Taking taylor expansion of (sqrt (- (+ 1.0 (/ 1 x)))) in x
0.363 * [taylor]: Taking taylor expansion of (- (+ 1.0 (/ 1 x))) in x
0.363 * [taylor]: Taking taylor expansion of (+ 1.0 (/ 1 x)) in x
0.363 * [taylor]: Taking taylor expansion of 1.0 in x
0.363 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.363 * [taylor]: Taking taylor expansion of x in x
0.365 * [taylor]: Taking taylor expansion of (sqrt (/ -1 x)) in x
0.365 * [taylor]: Taking taylor expansion of (/ -1 x) in x
0.365 * [taylor]: Taking taylor expansion of -1 in x
0.365 * [taylor]: Taking taylor expansion of x in x
0.366 * [taylor]: Taking taylor expansion of (* (sqrt (- (+ 1.0 (/ 1 x)))) (sqrt (/ -1 x))) in x
0.366 * [taylor]: Taking taylor expansion of (sqrt (- (+ 1.0 (/ 1 x)))) in x
0.366 * [taylor]: Taking taylor expansion of (- (+ 1.0 (/ 1 x))) in x
0.366 * [taylor]: Taking taylor expansion of (+ 1.0 (/ 1 x)) in x
0.366 * [taylor]: Taking taylor expansion of 1.0 in x
0.367 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.367 * [taylor]: Taking taylor expansion of x in x
0.368 * [taylor]: Taking taylor expansion of (sqrt (/ -1 x)) in x
0.368 * [taylor]: Taking taylor expansion of (/ -1 x) in x
0.368 * [taylor]: Taking taylor expansion of -1 in x
0.368 * [taylor]: Taking taylor expansion of x in x
0.397 * * * [progress]: simplifying candidates
0.398 * [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)))))
0.401 * * [simplify]: iteration  0 :  181  enodes  (cost  216 )
0.405 * * [simplify]: iteration  1 :  610  enodes  (cost  206 )
0.417 * * [simplify]: iteration  2 :  2471  enodes  (cost  201 )
0.470 * * [simplify]: iteration  3 :  5002  enodes  (cost  201 )
0.471 * [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)))
0.472 * * * [progress]: adding candidates to table
0.535 * * [progress]: iteration 2 / 4
0.535 * * * [progress]: picking best candidate
0.536 * * * * [pick]: Picked  #<alt (λ (x) (- x (+ 0.5 (* 0.125 (/ 1 x)))))>
0.536 * * * [progress]: localizing error
0.542 * * * [progress]: generating rewritten candidates
0.542 * * * * [progress]: [ 1 / 1 ] rewriting at (2 2 2)
0.551 * * * [progress]: generating series expansions
0.551 * * * * [progress]: [ 1 / 1 ] generating series at (2 2 2)
0.551 * [approximate]: Taking taylor expansion of (/ 0.125 x) in (x) around 0
0.551 * [taylor]: Taking taylor expansion of (/ 0.125 x) in x
0.551 * [taylor]: Taking taylor expansion of 0.125 in x
0.551 * [taylor]: Taking taylor expansion of x in x
0.552 * [taylor]: Taking taylor expansion of (/ 0.125 x) in x
0.552 * [taylor]: Taking taylor expansion of 0.125 in x
0.552 * [taylor]: Taking taylor expansion of x in x
0.555 * [approximate]: Taking taylor expansion of (* 0.125 x) in (x) around 0
0.555 * [taylor]: Taking taylor expansion of (* 0.125 x) in x
0.555 * [taylor]: Taking taylor expansion of 0.125 in x
0.555 * [taylor]: Taking taylor expansion of x in x
0.555 * [taylor]: Taking taylor expansion of (* 0.125 x) in x
0.555 * [taylor]: Taking taylor expansion of 0.125 in x
0.556 * [taylor]: Taking taylor expansion of x in x
0.561 * [approximate]: Taking taylor expansion of (* -0.125 x) in (x) around 0
0.561 * [taylor]: Taking taylor expansion of (* -0.125 x) in x
0.561 * [taylor]: Taking taylor expansion of -0.125 in x
0.561 * [taylor]: Taking taylor expansion of x in x
0.561 * [taylor]: Taking taylor expansion of (* -0.125 x) in x
0.561 * [taylor]: Taking taylor expansion of -0.125 in x
0.561 * [taylor]: Taking taylor expansion of x in x
0.567 * * * [progress]: simplifying candidates
0.568 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* 0.125 (/ 1 x))
  (+ (log 0.125) (- (log x)))
  (+ (log 0.125) (- 0 (log x)))
  (+ (log 0.125) (- (log 1) (log x)))
  (+ (log 0.125) (log (/ 1 x)))
  (log (* 0.125 (/ 1 x)))
  (exp (* 0.125 (/ 1 x)))
  (* (* (* 0.125 0.125) 0.125) (/ (* (* 1 1) 1) (* (* x x) x)))
  (* (* (* 0.125 0.125) 0.125) (* (* (/ 1 x) (/ 1 x)) (/ 1 x)))
  (* (cbrt (* 0.125 (/ 1 x))) (cbrt (* 0.125 (/ 1 x))))
  (cbrt (* 0.125 (/ 1 x)))
  (* (* (* 0.125 (/ 1 x)) (* 0.125 (/ 1 x))) (* 0.125 (/ 1 x)))
  (sqrt (* 0.125 (/ 1 x)))
  (sqrt (* 0.125 (/ 1 x)))
  (* (sqrt 0.125) (sqrt (/ 1 x)))
  (* (sqrt 0.125) (sqrt (/ 1 x)))
  (* (sqrt 0.125) (/ (sqrt 1) (sqrt x)))
  (* (sqrt 0.125) (/ (sqrt 1) (sqrt x)))
  (* (sqrt 0.125) (/ 1 (sqrt x)))
  (* (sqrt 0.125) (/ 1 (sqrt x)))
  (* 0.125 (* (cbrt (/ 1 x)) (cbrt (/ 1 x))))
  (* 0.125 (sqrt (/ 1 x)))
  (* 0.125 (/ (* (cbrt 1) (cbrt 1)) (* (cbrt x) (cbrt x))))
  (* 0.125 (/ (* (cbrt 1) (cbrt 1)) (sqrt x)))
  (* 0.125 (/ (* (cbrt 1) (cbrt 1)) 1))
  (* 0.125 (/ (sqrt 1) (* (cbrt x) (cbrt x))))
  (* 0.125 (/ (sqrt 1) (sqrt x)))
  (* 0.125 (/ (sqrt 1) 1))
  (* 0.125 (/ 1 (* (cbrt x) (cbrt x))))
  (* 0.125 (/ 1 (sqrt x)))
  (* 0.125 (/ 1 1))
  (* 0.125 1)
  (* 0.125 1)
  (* (cbrt 0.125) (/ 1 x))
  (* (sqrt 0.125) (/ 1 x))
  (* 0.125 (/ 1 x))
  (* 0.125 1)
  (/ 0.125 x)
  (/ 0.125 x)
  (/ 0.125 x)
0.574 * * [simplify]: iteration  0 :  174  enodes  (cost  138 )
0.578 * * [simplify]: iteration  1 :  722  enodes  (cost  114 )
0.590 * * [simplify]: iteration  2 :  2570  enodes  (cost  96 )
0.611 * * [simplify]: iteration  3 :  4879  enodes  (cost  96 )
0.645 * * [simplify]: iteration  4 :  5001  enodes  (cost  96 )
0.647 * [simplify]: Simplified to:
   (/ 0.125 x)
  (- (log 0.125) (log x))
  (- (log 0.125) (log x))
  (- (log 0.125) (log x))
  (- (log 0.125) (log x))
  (- (log 0.125) (log x))
  (exp (* 0.125 (/ 1 x)))
  (pow (/ 0.125 x) 3)
  (pow (/ 0.125 x) 3)
  (* (cbrt (* 0.125 (/ 1 x))) (cbrt (* 0.125 (/ 1 x))))
  (cbrt (* 0.125 (/ 1 x)))
  (pow (/ 0.125 x) 3)
  (sqrt (* 0.125 (/ 1 x)))
  (sqrt (* 0.125 (/ 1 x)))
  (* (sqrt 0.125) (sqrt (/ 1 x)))
  (* (sqrt 0.125) (sqrt (/ 1 x)))
  (/ (sqrt 0.125) (sqrt x))
  (/ (sqrt 0.125) (sqrt x))
  (/ (sqrt 0.125) (sqrt x))
  (/ (sqrt 0.125) (sqrt x))
  (* 0.125 (* (cbrt (/ 1 x)) (cbrt (/ 1 x))))
  (* 0.125 (sqrt (/ 1 x)))
  (/ 0.125 (* (cbrt x) (cbrt x)))
  (/ 0.125 (sqrt x))
  0.125
  (/ 0.125 (* (cbrt x) (cbrt x)))
  (/ 0.125 (sqrt x))
  0.125
  (/ 0.125 (* (cbrt x) (cbrt x)))
  (/ 0.125 (sqrt x))
  0.125
  0.125
  0.125
  (/ (cbrt 0.125) x)
  (/ (sqrt 0.125) x)
  (/ 0.125 x)
  0.125
  (/ 0.125 x)
  (/ 0.125 x)
  (/ 0.125 x)
0.647 * * * [progress]: adding candidates to table
0.687 * [progress]: [Phase 3 of 3] Extracting.
0.687 * * [regime]: Finding splitpoints for: (#<alt (λ (x) (* (sqrt (- x 1.0)) (sqrt x)))> #<alt (λ (x) (- x (+ 0.5 (* 0.125 (/ 1 x)))))>)
0.688 * * * [regime-changes]: Trying 2 branch expressions: ((* (sqrt (- x 1.0)) (sqrt x)) x)
0.688 * * * * [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 (+ 0.5 (* 0.125 (/ 1 x)))))>)
0.708 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x) (* (sqrt (- x 1.0)) (sqrt x)))> #<alt (λ (x) (- x (+ 0.5 (* 0.125 (/ 1 x)))))>)
0.717 * * * [regime]: Found split indices: #<option (#s(si 1 255))>
0.718 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- x (+ 0.5 (* 0.125 (/ 1 x))))
0.718 * * [simplify]: iteration  0 :  12  enodes  (cost  4 )
0.719 * * [simplify]: iteration  1 :  12  enodes  (cost  4 )
0.719 * [simplify]: Simplified to:
   (- x (+ 0.5 (* 0.125 (/ 1 x))))
1.629 * [regime-testing]: Baseline error score: 0.42722670942635665
1.630 * [regime-testing]: Oracle error score: 0.006125765720715089
1.631 * [regime-testing]: End program error score: 0.42722670942635665