18.060 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.048 * * * [progress]: [2/2] Setting up program.
0.052 * [progress]: [Phase 2 of 3] Improving.
0.052 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (- (- x (* (/ 1.0 2.0) (pow x 2.0))) (* (/ 1.0 3.0) (pow x 3.0))) (* (/ 1.0 4.0) (pow x 4.0)))
0.054 * * [simplify]: iteration  0 :  46  enodes  (cost  12 )
0.055 * * [simplify]: iteration  1 :  144  enodes  (cost  12 )
0.058 * * [simplify]: iteration  2 :  427  enodes  (cost  12 )
0.066 * * [simplify]: iteration  3 :  1337  enodes  (cost  12 )
0.098 * * [simplify]: iteration  4 :  5001  enodes  (cost  11 )
0.099 * [simplify]: Simplified to:
   (- (- x (* (/ 1.0 4.0) (pow x 4.0))) (* 1.0 (+ (/ (pow x 3.0) 3.0) (/ (pow x 2.0) 2.0))))
0.102 * [progress]: [Phase 3 of 3] Extracting.
0.102 * * [regime]: Finding splitpoints for: (#<alt (λ (x) (- (- x (* (/ 1.0 4.0) (pow x 4.0))) (* 1.0 (+ (/ (pow x 3.0) 3.0) (/ (pow x 2.0) 2.0)))))> #<alt (λ (x) (- (- (- x (* (/ 1.0 2.0) (pow x 2.0))) (* (/ 1.0 3.0) (pow x 3.0))) (* (/ 1.0 4.0) (pow x 4.0))))>)
0.103 * * * [regime-changes]: Trying 2 branch expressions: ((- (- (- x (* (/ 1.0 2.0) (pow x 2.0))) (* (/ 1.0 3.0) (pow x 3.0))) (* (/ 1.0 4.0) (pow x 4.0))) x)
0.103 * * * * [regimes]: Trying to branch on (- (- (- x (* (/ 1.0 2.0) (pow x 2.0))) (* (/ 1.0 3.0) (pow x 3.0))) (* (/ 1.0 4.0) (pow x 4.0))) from (#<alt (λ (x) (- (- x (* (/ 1.0 4.0) (pow x 4.0))) (* 1.0 (+ (/ (pow x 3.0) 3.0) (/ (pow x 2.0) 2.0)))))> #<alt (λ (x) (- (- (- x (* (/ 1.0 2.0) (pow x 2.0))) (* (/ 1.0 3.0) (pow x 3.0))) (* (/ 1.0 4.0) (pow x 4.0))))>)
0.149 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x) (- (- x (* (/ 1.0 4.0) (pow x 4.0))) (* 1.0 (+ (/ (pow x 3.0) 3.0) (/ (pow x 2.0) 2.0)))))> #<alt (λ (x) (- (- (- x (* (/ 1.0 2.0) (pow x 2.0))) (* (/ 1.0 3.0) (pow x 3.0))) (* (/ 1.0 4.0) (pow x 4.0))))>)
0.176 * * * [regime]: Found split indices: #<option (#s(si 0 255))>
0.176 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (- x (* (/ 1.0 4.0) (pow x 4.0))) (* 1.0 (+ (/ (pow x 3.0) 3.0) (/ (pow x 2.0) 2.0))))
0.177 * * [simplify]: iteration  0 :  19  enodes  (cost  11 )
0.177 * * [simplify]: iteration  1 :  19  enodes  (cost  11 )
0.177 * [simplify]: Simplified to:
   (- (- x (* (/ 1.0 4.0) (pow x 4.0))) (* 1.0 (+ (/ (pow x 3.0) 3.0) (/ (pow x 2.0) 2.0))))
1.943 * [regime-testing]: End program error score: 0.022502812851606453