22.874 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.071 * * * [progress]: [2/2] Setting up program.
0.078 * [progress]: [Phase 2 of 3] Improving.
0.079 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
0.079 * * [simplify]: iteration 0: 6 enodes
0.082 * * [simplify]: iteration 1: 14 enodes
0.088 * * [simplify]: iteration 2: 29 enodes
0.116 * * [simplify]: iteration 3: 69 enodes
0.159 * * [simplify]: iteration 4: 193 enodes
0.316 * * [simplify]: iteration 5: 611 enodes
1.559 * * [simplify]: iteration 6: 2808 enodes
3.776 * * [simplify]: iteration complete: 5000 enodes
3.776 * * [simplify]: Extracting #0: cost 1 inf + 0
3.776 * * [simplify]: Extracting #1: cost 60 inf + 0
3.778 * * [simplify]: Extracting #2: cost 431 inf + 0
3.815 * * [simplify]: Extracting #3: cost 986 inf + 4
3.825 * * [simplify]: Extracting #4: cost 1343 inf + 3880
3.857 * * [simplify]: Extracting #5: cost 1162 inf + 157774
3.942 * * [simplify]: Extracting #6: cost 488 inf + 527123
4.084 * * [simplify]: Extracting #7: cost 66 inf + 879237
4.247 * * [simplify]: Extracting #8: cost 0 inf + 921974
4.395 * * [simplify]: Extracting #9: cost 0 inf + 918090
4.556 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
4.557 * * [progress]: iteration 1 / 4
4.557 * * * [progress]: picking best candidate
4.565 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
4.565 * * * [progress]: localizing error
4.582 * * * [progress]: generating rewritten candidates
4.582 * * * [progress]: generating series expansions
4.582 * * * [progress]: simplifying candidates
4.583 * [simplify]: Simplifying:
  
4.583 * * [simplify]: iteration 0: 0 enodes
4.583 * * [simplify]: iteration complete: 0 enodes
4.583 * * [simplify]: Extracting #0: cost 0 inf + 0
4.583 * [simplify]: Simplified to:
  
4.583 * * * [progress]: adding candidates to table
4.584 * [progress]: [Phase 3 of 3] Extracting.
4.592 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
4.592 * * [simplify]: iteration 0: 6 enodes
4.593 * * [simplify]: iteration complete: 6 enodes
4.593 * * [simplify]: Extracting #0: cost 1 inf + 0
4.593 * * [simplify]: Extracting #1: cost 3 inf + 0
4.593 * * [simplify]: Extracting #2: cost 6 inf + 0
4.593 * * [simplify]: Extracting #3: cost 2 inf + 215
4.593 * * [simplify]: Extracting #4: cost 0 inf + 890
4.593 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
7.335 * [regime-testing]: Baseline error score: 0.003969857169916673
7.352 * [regime-testing]: Oracle error score: 0.003969857169916673
7.352 * [regime-testing]: End program error score: 0.003969857169916673