12.225 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.031 * * * [progress]: [2/2] Setting up program.
0.033 * [progress]: [Phase 2 of 3] Improving.
0.033 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (pow x 4.0) (pow y 4.0))
0.034 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.035 * * [simplify]: iteration  1 :  14  enodes  (cost  7 )
0.037 * * [simplify]: iteration  2 :  30  enodes  (cost  7 )
0.041 * * [simplify]: iteration  3 :  74  enodes  (cost  7 )
0.057 * * [simplify]: iteration  4 :  195  enodes  (cost  7 )
0.104 * * [simplify]: iteration  5 :  660  enodes  (cost  7 )
0.370 * * [simplify]: iteration  6 :  3057  enodes  (cost  7 )
1.823 * * [simplify]: iteration  done :  5000  enodes  (cost  7 )
1.823 * [simplify]: Simplified to:
   (- (pow x 4.0) (pow y 4.0))
1.823 * * [progress]: iteration 1 / 4
1.823 * * * [progress]: picking best candidate
1.825 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
1.825 * * * [progress]: localizing error
1.830 * * * [progress]: generating rewritten candidates
1.830 * * * [progress]: generating series expansions
1.831 * * * [progress]: simplifying candidates
1.831 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
1.832 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
1.832 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
1.832 * [simplify]: Simplified to:
   
1.832 * * * [progress]: adding candidates to table
1.832 * [progress]: [Phase 3 of 3] Extracting.
1.834 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (pow x 4.0) (pow y 4.0))
1.834 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
1.834 * * [simplify]: iteration  done :  6  enodes  (cost  7 )
1.834 * [simplify]: Simplified to:
   (- (pow x 4.0) (pow y 4.0))
2.849 * [regime-testing]: End program error score: 0.0015001875234404302