14.840 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.032 * * * [progress]: [2/2] Setting up program.
0.034 * [progress]: [Phase 2 of 3] Improving.
0.034 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (pow x 4.0) (pow y 4.0))
0.035 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.036 * * [simplify]: iteration  1 :  14  enodes  (cost  7 )
0.038 * * [simplify]: iteration  2 :  30  enodes  (cost  7 )
0.043 * * [simplify]: iteration  3 :  74  enodes  (cost  7 )
0.056 * * [simplify]: iteration  4 :  190  enodes  (cost  7 )
0.114 * * [simplify]: iteration  5 :  596  enodes  (cost  7 )
0.501 * * [simplify]: iteration  6 :  2691  enodes  (cost  7 )
1.574 * * [simplify]: iteration  done :  5000  enodes  (cost  7 )
1.574 * [simplify]: Simplified to:
   (- (pow x 4.0) (pow y 4.0))
1.575 * * [progress]: iteration 1 / 4
1.575 * * * [progress]: picking best candidate
1.577 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
1.577 * * * [progress]: localizing error
1.582 * * * [progress]: generating rewritten candidates
1.582 * * * [progress]: generating series expansions
1.582 * * * [progress]: simplifying candidates
1.583 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
1.583 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
1.583 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
1.583 * [simplify]: Simplified to:
   
1.583 * * * [progress]: adding candidates to table
1.584 * [progress]: [Phase 3 of 3] Extracting.
1.586 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (pow x 4.0) (pow y 4.0))
1.586 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
1.586 * * [simplify]: iteration  done :  6  enodes  (cost  7 )
1.586 * [simplify]: Simplified to:
   (- (pow x 4.0) (pow y 4.0))
2.631 * [regime-testing]: End program error score: 0.0015001875234404302