11.661 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.055 * * * [progress]: [2/2] Setting up program.
0.061 * [progress]: [Phase 2 of 3] Improving.
0.062 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
0.062 * * [simplify]: iteration 0: 6 enodes
0.064 * * [simplify]: iteration 1: 14 enodes
0.068 * * [simplify]: iteration 2: 29 enodes
0.078 * * [simplify]: iteration 3: 69 enodes
0.107 * * [simplify]: iteration 4: 206 enodes
0.236 * * [simplify]: iteration 5: 1100 enodes
0.900 * * [simplify]: iteration complete: 5001 enodes
0.900 * * [simplify]: Extracting #0: cost 1 inf + 0
0.900 * * [simplify]: Extracting #1: cost 128 inf + 0
0.902 * * [simplify]: Extracting #2: cost 988 inf + 0
0.907 * * [simplify]: Extracting #3: cost 1902 inf + 4
0.913 * * [simplify]: Extracting #4: cost 1941 inf + 118
0.922 * * [simplify]: Extracting #5: cost 1537 inf + 5324
0.937 * * [simplify]: Extracting #6: cost 401 inf + 25304
0.949 * * [simplify]: Extracting #7: cost 7 inf + 31857
0.958 * * [simplify]: Extracting #8: cost 0 inf + 31588
0.968 * * [simplify]: Extracting #9: cost 0 inf + 31584
0.977 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
0.978 * * [progress]: iteration 1 / 4
0.978 * * * [progress]: picking best candidate
0.983 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
0.983 * * * [progress]: localizing error
0.996 * * * [progress]: generating rewritten candidates
0.997 * * * [progress]: generating series expansions
0.997 * * * [progress]: simplifying candidates
0.997 * [simplify]: Simplifying:
  
0.997 * * [simplify]: iteration 0: 0 enodes
0.997 * * [simplify]: iteration complete: 0 enodes
0.997 * * [simplify]: Extracting #0: cost 0 inf + 0
0.997 * [simplify]: Simplified to:
  
0.997 * * * [progress]: adding candidates to table
0.997 * [progress]: [Phase 3 of 3] Extracting.
1.002 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
1.003 * * [simplify]: iteration 0: 6 enodes
1.003 * * [simplify]: iteration complete: 6 enodes
1.003 * * [simplify]: Extracting #0: cost 1 inf + 0
1.003 * * [simplify]: Extracting #1: cost 3 inf + 0
1.003 * * [simplify]: Extracting #2: cost 6 inf + 0
1.003 * * [simplify]: Extracting #3: cost 2 inf + 6
1.003 * * [simplify]: Extracting #4: cost 0 inf + 16
1.003 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
3.260 * [regime-testing]: Baseline error score: 0.0031253906738342293
3.262 * [regime-testing]: Oracle error score: 0.0031253906738342293
3.262 * [regime-testing]: End program error score: 0.0031253906738342293