4.107 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.017 * * * [progress]: [2/2] Setting up program.
0.019 * [progress]: [Phase 2 of 3] Improving.
0.019 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (* x x) 1.0)
0.021 * * [simplify]: iteration  0 :  6  enodes  (cost  2 )
0.023 * * [simplify]: iteration  1 :  7  enodes  (cost  2 )
0.025 * * [simplify]: iteration  2 :  7  enodes  (cost  2 )
0.025 * [simplify]: Simplified to:
   (- (* x x) 1.0)
0.025 * * [progress]: iteration 1 / 4
0.025 * * * [progress]: picking best candidate
0.026 * * * * [pick]: Picked  #<alt (λ (x) (- (* x x) 1.0))>
0.026 * * * [progress]: localizing error
0.029 * * * [progress]: generating rewritten candidates
0.030 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.033 * * * [progress]: generating series expansions
0.033 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.033 * [approximate]: Taking taylor expansion of (- (pow x 2) 1.0) in (x) around 0
0.033 * [taylor]: Taking taylor expansion of (- (pow x 2) 1.0) in x
0.033 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.033 * [taylor]: Taking taylor expansion of x in x
0.033 * [taylor]: Taking taylor expansion of 1.0 in x
0.033 * [taylor]: Taking taylor expansion of (- (pow x 2) 1.0) in x
0.033 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.033 * [taylor]: Taking taylor expansion of x in x
0.033 * [taylor]: Taking taylor expansion of 1.0 in x
0.043 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) 1.0) in (x) around 0
0.043 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) 1.0) in x
0.043 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.043 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.043 * [taylor]: Taking taylor expansion of x in x
0.044 * [taylor]: Taking taylor expansion of 1.0 in x
0.044 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) 1.0) in x
0.044 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.044 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.044 * [taylor]: Taking taylor expansion of x in x
0.045 * [taylor]: Taking taylor expansion of 1.0 in x
0.059 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) 1.0) in (x) around 0
0.059 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) 1.0) in x
0.059 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.059 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.059 * [taylor]: Taking taylor expansion of x in x
0.060 * [taylor]: Taking taylor expansion of 1.0 in x
0.060 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) 1.0) in x
0.060 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.060 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.060 * [taylor]: Taking taylor expansion of x in x
0.061 * [taylor]: Taking taylor expansion of 1.0 in x
0.079 * * * [progress]: simplifying candidates
0.079 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ (exp (* x x)) (exp 1.0))
  (log (- (* x x) 1.0))
  (exp (- (* x x) 1.0))
  (* (cbrt (- (* x x) 1.0)) (cbrt (- (* x x) 1.0)))
  (cbrt (- (* x x) 1.0))
  (* (* (- (* x x) 1.0) (- (* x x) 1.0)) (- (* x x) 1.0))
  (sqrt (- (* x x) 1.0))
  (sqrt (- (* x x) 1.0))
  (- (pow (* x x) 3) (pow 1.0 3))
  (+ (* (* x x) (* x x)) (+ (* 1.0 1.0) (* (* x x) 1.0)))
  (- 1.0)
  (- (* (* x x) (* x x)) (* 1.0 1.0))
  (+ (* x x) 1.0)
  (+ x (sqrt 1.0))
  (- x (sqrt 1.0))
  (- 1.0)
  (- (pow x 2) 1.0)
  (- (pow x 2) 1.0)
  (- (pow x 2) 1.0)
0.083 * * [simplify]: iteration  0 :  73  enodes  (cost  63 )
0.085 * * [simplify]: iteration  1 :  216  enodes  (cost  56 )
0.089 * * [simplify]: iteration  2 :  535  enodes  (cost  56 )
0.101 * * [simplify]: iteration  3 :  1794  enodes  (cost  56 )
0.146 * * [simplify]: iteration  4 :  5001  enodes  (cost  56 )
0.147 * [simplify]: Simplified to:
   (exp (- (* x x) 1.0))
  (log (- (* x x) 1.0))
  (exp (- (* x x) 1.0))
  (* (cbrt (- (* x x) 1.0)) (cbrt (- (* x x) 1.0)))
  (cbrt (- (* x x) 1.0))
  (pow (- (pow x 2) 1.0) 3)
  (sqrt (- (* x x) 1.0))
  (sqrt (- (* x x) 1.0))
  (- (pow (* x x) 3) (pow 1.0 3))
  (+ (+ (pow x 4) (* (* x x) 1.0)) (* 1.0 1.0))
  (- 0 1.0)
  (+ (- (* 1.0 1.0)) (pow x 4))
  (+ (* x x) 1.0)
  (+ x (sqrt 1.0))
  (- x (sqrt 1.0))
  (- 0 1.0)
  (- (pow x 2) 1.0)
  (- (pow x 2) 1.0)
  (- (pow x 2) 1.0)
0.147 * * * [progress]: adding candidates to table
0.175 * * [progress]: iteration 2 / 4
0.175 * * * [progress]: picking best candidate
0.176 * * * * [pick]: Picked  #<alt (λ (x) (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))))>
0.176 * * * [progress]: localizing error
0.182 * * * [progress]: generating rewritten candidates
0.182 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.211 * * * [progress]: generating series expansions
0.211 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.212 * [approximate]: Taking taylor expansion of (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))) in (x) around 0
0.212 * [taylor]: Taking taylor expansion of (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))) in x
0.212 * [taylor]: Taking taylor expansion of (+ x (sqrt 1.0)) in x
0.212 * [taylor]: Taking taylor expansion of x in x
0.212 * [taylor]: Taking taylor expansion of (sqrt 1.0) in x
0.212 * [taylor]: Taking taylor expansion of 1.0 in x
0.213 * [taylor]: Taking taylor expansion of (- x (sqrt 1.0)) in x
0.213 * [taylor]: Taking taylor expansion of x in x
0.213 * [taylor]: Taking taylor expansion of (sqrt 1.0) in x
0.213 * [taylor]: Taking taylor expansion of 1.0 in x
0.214 * [taylor]: Taking taylor expansion of (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))) in x
0.214 * [taylor]: Taking taylor expansion of (+ x (sqrt 1.0)) in x
0.214 * [taylor]: Taking taylor expansion of x in x
0.214 * [taylor]: Taking taylor expansion of (sqrt 1.0) in x
0.214 * [taylor]: Taking taylor expansion of 1.0 in x
0.215 * [taylor]: Taking taylor expansion of (- x (sqrt 1.0)) in x
0.215 * [taylor]: Taking taylor expansion of x in x
0.215 * [taylor]: Taking taylor expansion of (sqrt 1.0) in x
0.215 * [taylor]: Taking taylor expansion of 1.0 in x
0.250 * [approximate]: Taking taylor expansion of (* (- (/ 1 x) (sqrt 1.0)) (+ (sqrt 1.0) (/ 1 x))) in (x) around 0
0.250 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (sqrt 1.0)) (+ (sqrt 1.0) (/ 1 x))) in x
0.250 * [taylor]: Taking taylor expansion of (- (/ 1 x) (sqrt 1.0)) in x
0.250 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.250 * [taylor]: Taking taylor expansion of x in x
0.250 * [taylor]: Taking taylor expansion of (sqrt 1.0) in x
0.250 * [taylor]: Taking taylor expansion of 1.0 in x
0.251 * [taylor]: Taking taylor expansion of (+ (sqrt 1.0) (/ 1 x)) in x
0.251 * [taylor]: Taking taylor expansion of (sqrt 1.0) in x
0.251 * [taylor]: Taking taylor expansion of 1.0 in x
0.252 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.252 * [taylor]: Taking taylor expansion of x in x
0.252 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (sqrt 1.0)) (+ (sqrt 1.0) (/ 1 x))) in x
0.252 * [taylor]: Taking taylor expansion of (- (/ 1 x) (sqrt 1.0)) in x
0.252 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.252 * [taylor]: Taking taylor expansion of x in x
0.252 * [taylor]: Taking taylor expansion of (sqrt 1.0) in x
0.252 * [taylor]: Taking taylor expansion of 1.0 in x
0.253 * [taylor]: Taking taylor expansion of (+ (sqrt 1.0) (/ 1 x)) in x
0.253 * [taylor]: Taking taylor expansion of (sqrt 1.0) in x
0.253 * [taylor]: Taking taylor expansion of 1.0 in x
0.254 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.254 * [taylor]: Taking taylor expansion of x in x
0.297 * [approximate]: Taking taylor expansion of (* -1 (* (- (sqrt 1.0) (/ 1 x)) (+ (sqrt 1.0) (/ 1 x)))) in (x) around 0
0.297 * [taylor]: Taking taylor expansion of (* -1 (* (- (sqrt 1.0) (/ 1 x)) (+ (sqrt 1.0) (/ 1 x)))) in x
0.297 * [taylor]: Taking taylor expansion of -1 in x
0.297 * [taylor]: Taking taylor expansion of (* (- (sqrt 1.0) (/ 1 x)) (+ (sqrt 1.0) (/ 1 x))) in x
0.297 * [taylor]: Taking taylor expansion of (- (sqrt 1.0) (/ 1 x)) in x
0.297 * [taylor]: Taking taylor expansion of (sqrt 1.0) in x
0.297 * [taylor]: Taking taylor expansion of 1.0 in x
0.298 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.298 * [taylor]: Taking taylor expansion of x in x
0.299 * [taylor]: Taking taylor expansion of (+ (sqrt 1.0) (/ 1 x)) in x
0.299 * [taylor]: Taking taylor expansion of (sqrt 1.0) in x
0.299 * [taylor]: Taking taylor expansion of 1.0 in x
0.299 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.299 * [taylor]: Taking taylor expansion of x in x
0.300 * [taylor]: Taking taylor expansion of (* -1 (* (- (sqrt 1.0) (/ 1 x)) (+ (sqrt 1.0) (/ 1 x)))) in x
0.300 * [taylor]: Taking taylor expansion of -1 in x
0.300 * [taylor]: Taking taylor expansion of (* (- (sqrt 1.0) (/ 1 x)) (+ (sqrt 1.0) (/ 1 x))) in x
0.300 * [taylor]: Taking taylor expansion of (- (sqrt 1.0) (/ 1 x)) in x
0.300 * [taylor]: Taking taylor expansion of (sqrt 1.0) in x
0.300 * [taylor]: Taking taylor expansion of 1.0 in x
0.301 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.301 * [taylor]: Taking taylor expansion of x in x
0.301 * [taylor]: Taking taylor expansion of (+ (sqrt 1.0) (/ 1 x)) in x
0.301 * [taylor]: Taking taylor expansion of (sqrt 1.0) in x
0.301 * [taylor]: Taking taylor expansion of 1.0 in x
0.302 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.302 * [taylor]: Taking taylor expansion of x in x
0.351 * * * [progress]: simplifying candidates
0.351 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (+ x (sqrt 1.0)) (- x (sqrt 1.0)))
  (+ (log (+ x (sqrt 1.0))) (log (- x (sqrt 1.0))))
  (log (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))))
  (exp (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))))
  (* (* (* (+ x (sqrt 1.0)) (+ x (sqrt 1.0))) (+ x (sqrt 1.0))) (* (* (- x (sqrt 1.0)) (- x (sqrt 1.0))) (- x (sqrt 1.0))))
  (* (cbrt (* (+ x (sqrt 1.0)) (- x (sqrt 1.0)))) (cbrt (* (+ x (sqrt 1.0)) (- x (sqrt 1.0)))))
  (cbrt (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))))
  (* (* (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))) (* (+ x (sqrt 1.0)) (- x (sqrt 1.0)))) (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))))
  (sqrt (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))))
  (sqrt (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))))
  (* (+ (pow x 3) (pow (sqrt 1.0) 3)) (- (pow x 3) (pow (sqrt 1.0) 3)))
  (* (+ (* x x) (- (* (sqrt 1.0) (sqrt 1.0)) (* x (sqrt 1.0)))) (+ (* x x) (+ (* (sqrt 1.0) (sqrt 1.0)) (* x (sqrt 1.0)))))
  (* (+ (pow x 3) (pow (sqrt 1.0) 3)) (- (* x x) (* (sqrt 1.0) (sqrt 1.0))))
  (* (+ (* x x) (- (* (sqrt 1.0) (sqrt 1.0)) (* x (sqrt 1.0)))) (+ x (sqrt 1.0)))
  (* (- (* x x) (* (sqrt 1.0) (sqrt 1.0))) (- (pow x 3) (pow (sqrt 1.0) 3)))
  (* (- x (sqrt 1.0)) (+ (* x x) (+ (* (sqrt 1.0) (sqrt 1.0)) (* x (sqrt 1.0)))))
  (* (- (* x x) (* (sqrt 1.0) (sqrt 1.0))) (- (* x x) (* (sqrt 1.0) (sqrt 1.0))))
  (* (- x (sqrt 1.0)) (+ x (sqrt 1.0)))
  (* (sqrt (+ x (sqrt 1.0))) (sqrt (- x (sqrt 1.0))))
  (* (sqrt (+ x (sqrt 1.0))) (sqrt (- x (sqrt 1.0))))
  (* (+ x (sqrt 1.0)) x)
  (* (+ x (sqrt 1.0)) (- (sqrt 1.0)))
  (* (+ x (sqrt 1.0)) x)
  (* (+ x (sqrt 1.0)) (- (sqrt 1.0)))
  (* x (+ x (sqrt 1.0)))
  (* (- (sqrt 1.0)) (+ x (sqrt 1.0)))
  (* x (+ x (sqrt 1.0)))
  (* (- (sqrt 1.0)) (+ x (sqrt 1.0)))
  (* (+ x (sqrt 1.0)) (* (cbrt (- x (sqrt 1.0))) (cbrt (- x (sqrt 1.0)))))
  (* (+ x (sqrt 1.0)) (sqrt (- x (sqrt 1.0))))
  (* (+ x (sqrt 1.0)) 1)
  (* (+ x (sqrt 1.0)) (+ (sqrt x) (sqrt (sqrt 1.0))))
  (* (+ x (sqrt 1.0)) (+ (sqrt x) (sqrt (sqrt 1.0))))
  (* (+ x (sqrt 1.0)) 1)
  (* (cbrt (+ x (sqrt 1.0))) (- x (sqrt 1.0)))
  (* (sqrt (+ x (sqrt 1.0))) (- x (sqrt 1.0)))
  (* (+ x (sqrt 1.0)) (- x (sqrt 1.0)))
  (* (+ x (sqrt 1.0)) (- x (sqrt 1.0)))
  (* (+ x (sqrt 1.0)) (- (pow x 3) (pow (sqrt 1.0) 3)))
  (* (+ x (sqrt 1.0)) (- (* x x) (* (sqrt 1.0) (sqrt 1.0))))
  (* (+ (pow x 3) (pow (sqrt 1.0) 3)) (- x (sqrt 1.0)))
  (* (- (* x x) (* (sqrt 1.0) (sqrt 1.0))) (- x (sqrt 1.0)))
  (- (pow x 2) (pow (sqrt 1.0) 2))
  (- (pow x 2) (pow (sqrt 1.0) 2))
  (- (pow x 2) (pow (sqrt 1.0) 2))
0.355 * * [simplify]: iteration  0 :  197  enodes  (cost  285 )
0.360 * * [simplify]: iteration  1 :  989  enodes  (cost  253 )
0.384 * * [simplify]: iteration  2 :  5001  enodes  (cost  245 )
0.386 * [simplify]: Simplified to:
   (+ (pow x 2) (- 1.0))
  (log (+ (pow x 2) (- 1.0)))
  (log (+ (pow x 2) (- 1.0)))
  (/ (exp (pow x 2)) (exp 1.0))
  (pow (+ (pow x 2) (- 1.0)) 3)
  (* (cbrt (* (+ x (sqrt 1.0)) (- x (sqrt 1.0)))) (cbrt (* (+ x (sqrt 1.0)) (- x (sqrt 1.0)))))
  (cbrt (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))))
  (pow (+ (pow x 2) (- 1.0)) 3)
  (sqrt (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))))
  (sqrt (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))))
  (* (+ (pow x 3) (pow (sqrt 1.0) 3)) (- (pow x 3) (pow (sqrt 1.0) 3)))
  (* (+ (+ (pow x 2) 1.0) (* x (sqrt 1.0))) (- (+ (pow x 2) 1.0) (* x (sqrt 1.0))))
  (* (+ (pow x 2) (- 1.0)) (+ (pow x 3) (pow (sqrt 1.0) 3)))
  (* (+ x (sqrt 1.0)) (- (+ (pow x 2) 1.0) (* x (sqrt 1.0))))
  (* (- (pow x 3) (pow (sqrt 1.0) 3)) (+ (pow x 2) (- 1.0)))
  (* (+ (+ (pow x 2) 1.0) (* x (sqrt 1.0))) (- x (sqrt 1.0)))
  (* (+ (pow x 2) (- 1.0)) (+ (pow x 2) (- 1.0)))
  (+ (pow x 2) (- 1.0))
  (* (sqrt (+ x (sqrt 1.0))) (sqrt (- x (sqrt 1.0))))
  (* (sqrt (+ x (sqrt 1.0))) (sqrt (- x (sqrt 1.0))))
  (* x (+ x (sqrt 1.0)))
  (- (+ (* x (sqrt 1.0)) 1.0))
  (* x (+ x (sqrt 1.0)))
  (- (+ (* x (sqrt 1.0)) 1.0))
  (* x (+ x (sqrt 1.0)))
  (- (+ (* x (sqrt 1.0)) 1.0))
  (* x (+ x (sqrt 1.0)))
  (- (+ (* x (sqrt 1.0)) 1.0))
  (* (+ x (sqrt 1.0)) (* (cbrt (- x (sqrt 1.0))) (cbrt (- x (sqrt 1.0)))))
  (* (+ x (sqrt 1.0)) (sqrt (- x (sqrt 1.0))))
  (+ x (sqrt 1.0))
  (* (+ x (sqrt 1.0)) (+ (sqrt x) (sqrt (sqrt 1.0))))
  (* (+ x (sqrt 1.0)) (+ (sqrt x) (sqrt (sqrt 1.0))))
  (+ x (sqrt 1.0))
  (* (cbrt (+ x (sqrt 1.0))) (- x (sqrt 1.0)))
  (* (sqrt (+ x (sqrt 1.0))) (- x (sqrt 1.0)))
  (+ (pow x 2) (- 1.0))
  (+ (pow x 2) (- 1.0))
  (* (+ x (sqrt 1.0)) (- (pow x 3) (pow (sqrt 1.0) 3)))
  (* (+ (pow x 2) (- 1.0)) (+ x (sqrt 1.0)))
  (* (+ (pow x 3) (pow (sqrt 1.0) 3)) (- x (sqrt 1.0)))
  (* (- x (sqrt 1.0)) (+ (pow x 2) (- 1.0)))
  (+ (pow x 2) (- 1.0))
  (+ (pow x 2) (- 1.0))
  (+ (pow x 2) (- 1.0))
0.386 * * * [progress]: adding candidates to table
0.464 * [progress]: [Phase 3 of 3] Extracting.
0.464 * * [regime]: Finding splitpoints for: (#<alt (λ (x) (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))))> #<alt (λ (x) (- (* x x) 1.0))>)
0.464 * * * [regime-changes]: Trying 3 branch expressions: ((* x x) (- (* x x) 1.0) x)
0.464 * * * * [regimes]: Trying to branch on (* x x) from (#<alt (λ (x) (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))))> #<alt (λ (x) (- (* x x) 1.0))>)
0.473 * * * * [regimes]: Trying to branch on (- (* x x) 1.0) from (#<alt (λ (x) (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))))> #<alt (λ (x) (- (* x x) 1.0))>)
0.482 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x) (* (+ x (sqrt 1.0)) (- x (sqrt 1.0))))> #<alt (λ (x) (- (* x x) 1.0))>)
0.494 * * * [regime]: Found split indices: #<option (#s(si 1 255))>
0.494 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (* x x) 1.0)
0.495 * * [simplify]: iteration  0 :  4  enodes  (cost  2 )
0.495 * [simplify]: Simplified to:
   (- (* x x) 1.0)
1.034 * [regime-testing]: Baseline error score: 0.0016654491930100464
1.035 * [regime-testing]: Oracle error score: 0.00012501562695336918
1.036 * [regime-testing]: End program error score: 0.0016654491930100464