18.069 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.034 * * * [progress]: [2/2] Setting up program.
0.036 * [progress]: [Phase 2 of 3] Improving.
0.036 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (pow x 4.0) (pow y 4.0))
0.037 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.038 * * [simplify]: iteration  1 :  14  enodes  (cost  7 )
0.040 * * [simplify]: iteration  2 :  29  enodes  (cost  7 )
0.044 * * [simplify]: iteration  3 :  69  enodes  (cost  7 )
0.056 * * [simplify]: iteration  4 :  181  enodes  (cost  7 )
0.109 * * [simplify]: iteration  5 :  567  enodes  (cost  7 )
0.444 * * [simplify]: iteration  6 :  2495  enodes  (cost  7 )
1.578 * * [simplify]: iteration  done :  5001  enodes  (cost  7 )
1.578 * [simplify]: Simplified to:
   (- (pow x 4.0) (pow y 4.0))
1.579 * * [progress]: iteration 1 / 4
1.579 * * * [progress]: picking best candidate
1.580 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
1.580 * * * [progress]: localizing error
1.586 * * * [progress]: generating rewritten candidates
1.586 * * * [progress]: generating series expansions
1.586 * * * [progress]: simplifying candidates
1.587 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
1.588 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
1.588 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
1.588 * [simplify]: Simplified to:
   
1.588 * * * [progress]: adding candidates to table
1.588 * [progress]: [Phase 3 of 3] Extracting.
1.590 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (pow x 4.0) (pow y 4.0))
1.590 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
1.590 * * [simplify]: iteration  done :  6  enodes  (cost  7 )
1.590 * [simplify]: Simplified to:
   (- (pow x 4.0) (pow y 4.0))
2.628 * [regime-testing]: End program error score: 0.0015001875234404302