11.772 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.035 * * * [progress]: [2/2] Setting up program.
0.038 * [progress]: [Phase 2 of 3] Improving.
0.038 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
0.038 * * [simplify]: iteration 0: 6 enodes
0.040 * * [simplify]: iteration 1: 14 enodes
0.042 * * [simplify]: iteration 2: 29 enodes
0.047 * * [simplify]: iteration 3: 69 enodes
0.060 * * [simplify]: iteration 4: 206 enodes
0.189 * * [simplify]: iteration 5: 1100 enodes
1.323 * * [simplify]: iteration complete: 5001 enodes
1.323 * * [simplify]: Extracting #0: cost 1 inf + 0
1.324 * * [simplify]: Extracting #1: cost 128 inf + 0
1.326 * * [simplify]: Extracting #2: cost 988 inf + 0
1.331 * * [simplify]: Extracting #3: cost 1902 inf + 4
1.338 * * [simplify]: Extracting #4: cost 1941 inf + 2602
1.371 * * [simplify]: Extracting #5: cost 1537 inf + 207072
1.450 * * [simplify]: Extracting #6: cost 401 inf + 1015175
1.635 * * [simplify]: Extracting #7: cost 7 inf + 1296255
1.821 * * [simplify]: Extracting #8: cost 0 inf + 1296593
1.995 * * [simplify]: Extracting #9: cost 0 inf + 1295976
2.137 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
2.138 * * [progress]: iteration 1 / 4
2.138 * * * [progress]: picking best candidate
2.142 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
2.142 * * * [progress]: localizing error
2.152 * * * [progress]: generating rewritten candidates
2.152 * * * [progress]: generating series expansions
2.152 * * * [progress]: simplifying candidates
2.153 * [simplify]: Simplifying:
  
2.153 * * [simplify]: iteration 0: 0 enodes
2.153 * * [simplify]: iteration complete: 0 enodes
2.153 * * [simplify]: Extracting #0: cost 0 inf + 0
2.153 * [simplify]: Simplified to:
  
2.153 * * * [progress]: adding candidates to table
2.154 * [progress]: [Phase 3 of 3] Extracting.
2.162 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
2.162 * * [simplify]: iteration 0: 6 enodes
2.162 * * [simplify]: iteration complete: 6 enodes
2.162 * * [simplify]: Extracting #0: cost 1 inf + 0
2.162 * * [simplify]: Extracting #1: cost 3 inf + 0
2.162 * * [simplify]: Extracting #2: cost 6 inf + 0
2.162 * * [simplify]: Extracting #3: cost 2 inf + 215
2.163 * * [simplify]: Extracting #4: cost 0 inf + 890
2.163 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
4.431 * [regime-testing]: Baseline error score: 0.0031985201276060952
4.439 * [regime-testing]: Oracle error score: 0.0031985201276060952
4.439 * [regime-testing]: End program error score: 0.0031985201276060952