13.282 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.060 * * * [progress]: [2/2] Setting up program.
0.063 * [progress]: [Phase 2 of 3] Improving.
0.063 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
0.063 * * [simplify]: Extracting # 0 : cost  0
0.063 * * [simplify]: Extracting # 1 : cost  0
0.063 * * [simplify]: Extracting # 2 : cost  0
0.063 * * [simplify]: Extracting # 3 : cost  0
0.063 * * [simplify]: Extracting # 4 : cost  0
0.063 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.065 * * [simplify]: Extracting # 0 : cost  0
0.065 * * [simplify]: Extracting # 1 : cost  0
0.065 * * [simplify]: Extracting # 2 : cost  0
0.065 * * [simplify]: Extracting # 3 : cost  0
0.065 * * [simplify]: Extracting # 4 : cost  0
0.065 * * [simplify]: iteration  1 :  14  enodes  (cost  7 )
0.068 * * [simplify]: Extracting # 0 : cost  0
0.068 * * [simplify]: Extracting # 1 : cost  0
0.068 * * [simplify]: Extracting # 2 : cost  0
0.068 * * [simplify]: Extracting # 3 : cost  0
0.068 * * [simplify]: Extracting # 4 : cost  0
0.068 * * [simplify]: iteration  2 :  30  enodes  (cost  7 )
0.074 * * [simplify]: Extracting # 0 : cost  0
0.074 * * [simplify]: Extracting # 1 : cost  0
0.074 * * [simplify]: Extracting # 2 : cost  0
0.074 * * [simplify]: Extracting # 3 : cost  0
0.074 * * [simplify]: Extracting # 4 : cost  0
0.075 * * [simplify]: iteration  3 :  74  enodes  (cost  7 )
0.111 * * [simplify]: Extracting # 0 : cost  0
0.112 * * [simplify]: Extracting # 1 : cost  0
0.112 * * [simplify]: Extracting # 2 : cost  0
0.112 * * [simplify]: Extracting # 3 : cost  0
0.112 * * [simplify]: Extracting # 4 : cost  0
0.112 * * [simplify]: iteration  4 :  213  enodes  (cost  7 )
0.717 * * [simplify]: Extracting # 0 : cost  0
0.718 * * [simplify]: Extracting # 1 : cost  0
0.719 * * [simplify]: Extracting # 2 : cost  0
0.720 * * [simplify]: Extracting # 3 : cost  0
0.722 * * [simplify]: Extracting # 4 : cost  0
0.723 * * [simplify]: iteration  5 :  658  enodes  (cost  7 )
1.650 * * [simplify]: Extracting # 0 : cost  0
1.653 * * [simplify]: Extracting # 1 : cost  0
1.661 * * [simplify]: Extracting # 2 : cost  0
1.664 * * [simplify]: Extracting # 3 : cost  0
1.669 * * [simplify]: Extracting # 4 : cost  0
1.674 * * [simplify]: iteration  6 :  3171  enodes  (cost  7 )
3.450 * * [simplify]: Extracting # 0 : cost  0
3.456 * * [simplify]: Extracting # 1 : cost  0
3.461 * * [simplify]: Extracting # 2 : cost  0
3.466 * * [simplify]: iteration done:  5000  enodes  (cost  7 )
3.466 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
3.466 * * [progress]: iteration 1 / 4
3.466 * * * [progress]: picking best candidate
3.468 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
3.468 * * * [progress]: localizing error
3.474 * * * [progress]: generating rewritten candidates
3.475 * * * [progress]: generating series expansions
3.475 * * * [progress]: simplifying candidates
3.476 * [simplify]: Simplifying:
  
3.476 * * [simplify]: Extracting # 0 : cost  0
3.476 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
3.476 * * [simplify]: Extracting # 0 : cost  0
3.476 * * [simplify]: iteration done:  0  enodes  (cost  0 )
3.476 * [simplify]: Simplified to:
  
3.476 * * * [progress]: adding candidates to table
3.476 * [progress]: [Phase 3 of 3] Extracting.
3.478 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
3.478 * * [simplify]: Extracting # 0 : cost  0
3.478 * * [simplify]: Extracting # 1 : cost  0
3.478 * * [simplify]: Extracting # 2 : cost  0
3.478 * * [simplify]: Extracting # 3 : cost  0
3.478 * * [simplify]: Extracting # 4 : cost  0
3.478 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
3.479 * * [simplify]: Extracting # 0 : cost  0
3.479 * * [simplify]: iteration done:  6  enodes  (cost  7 )
3.479 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
5.644 * [regime-testing]: End program error score: 0.0025003125390673834