13.203 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.052 * * * [progress]: [2/2] Setting up program.
0.056 * [progress]: [Phase 2 of 3] Improving.
0.056 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
0.056 * * [simplify]: iteration 0: 6 enodes
0.058 * * [simplify]: iteration 1: 14 enodes
0.060 * * [simplify]: iteration 2: 30 enodes
0.067 * * [simplify]: iteration 3: 74 enodes
0.095 * * [simplify]: iteration 4: 207 enodes
0.203 * * [simplify]: iteration 5: 602 enodes
0.909 * * [simplify]: iteration 6: 2815 enodes
2.289 * * [simplify]: iteration complete: 5003 enodes
2.289 * * [simplify]: Extracting #0: cost 1 inf + 0
2.290 * * [simplify]: Extracting #1: cost 262 inf + 0
2.300 * * [simplify]: Extracting #2: cost 599 inf + 0
2.311 * * [simplify]: Extracting #3: cost 662 inf + 1188
2.331 * * [simplify]: Extracting #4: cost 586 inf + 28673
2.392 * * [simplify]: Extracting #5: cost 260 inf + 263997
2.570 * * [simplify]: Extracting #6: cost 2 inf + 473204
2.820 * * [simplify]: Extracting #7: cost 0 inf + 458513
3.106 * * [simplify]: Extracting #8: cost 0 inf + 455337
3.333 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
3.334 * * [progress]: iteration 1 / 4
3.334 * * * [progress]: picking best candidate
3.337 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
3.337 * * * [progress]: localizing error
3.345 * * * [progress]: generating rewritten candidates
3.345 * * * [progress]: generating series expansions
3.345 * * * [progress]: simplifying candidates
3.345 * [simplify]: Simplifying:
  
3.345 * * [simplify]: iteration 0: 0 enodes
3.345 * * [simplify]: iteration complete: 0 enodes
3.345 * * [simplify]: Extracting #0: cost 0 inf + 0
3.345 * [simplify]: Simplified to:
  
3.345 * * * [progress]: adding candidates to table
3.346 * [progress]: [Phase 3 of 3] Extracting.
3.350 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
3.350 * * [simplify]: iteration 0: 6 enodes
3.350 * * [simplify]: iteration complete: 6 enodes
3.350 * * [simplify]: Extracting #0: cost 1 inf + 0
3.350 * * [simplify]: Extracting #1: cost 3 inf + 0
3.350 * * [simplify]: Extracting #2: cost 6 inf + 0
3.350 * * [simplify]: Extracting #3: cost 2 inf + 215
3.350 * * [simplify]: Extracting #4: cost 0 inf + 890
3.350 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
5.839 * [regime-testing]: Baseline error score: 0.0031985201276060952
5.848 * [regime-testing]: Oracle error score: 0.0031985201276060952
5.849 * [regime-testing]: End program error score: 0.0031985201276060952