0.740 * [progress]: [Phase 1 of 3] Setting up.
0.004 * * * [progress]: [1/2] Preparing points
0.194 * * * [progress]: [2/2] Setting up program.
0.201 * [progress]: [Phase 2 of 3] Improving.
0.201 * * * * [progress]: [ 1 / 1 ] simplifiying candidate #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
0.204 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
0.205 * * [simplify]: iteration 1: (6 enodes)
0.215 * * [simplify]: iteration 2: (14 enodes)
0.224 * * [simplify]: iteration 3: (38 enodes)
0.282 * * [simplify]: iteration 4: (53 enodes)
0.293 * * [simplify]: iteration 5: (70 enodes)
0.309 * * [simplify]: iteration 6: (125 enodes)
0.356 * * [simplify]: iteration 7: (279 enodes)
0.458 * * [simplify]: iteration 8: (548 enodes)
0.694 * * [simplify]: iteration 9: (1244 enodes)
2.844 * * [simplify]: Extracting #0: cost 1 inf + 0
2.845 * * [simplify]: Extracting #1: cost 158 inf + 0
2.848 * * [simplify]: Extracting #2: cost 787 inf + 1
2.853 * * [simplify]: Extracting #3: cost 860 inf + 2240
2.886 * * [simplify]: Extracting #4: cost 433 inf + 119991
2.954 * * [simplify]: Extracting #5: cost 9 inf + 243606
3.047 * * [simplify]: Extracting #6: cost 0 inf + 237052
3.126 * * [simplify]: Extracting #7: cost 0 inf + 236974
3.261 * [simplify]: Simplified to:
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
3.276 * * [progress]: iteration 1 / 4
3.276 * * * [progress]: picking best candidate
3.281 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
3.281 * * * [progress]: localizing error
3.305 * * * [progress]: generating rewritten candidates
3.307 * * * [progress]: generating series expansions
3.307 * * * [progress]: simplifying candidates
3.307 * [simplify]: Simplifying:
  
3.307 * * [simplify]: iteration 1: (0 enodes)
3.307 * * [simplify]: Extracting #0: cost 0 inf + 0
3.307 * [simplify]: Simplified to:
  
3.307 * * * [progress]: adding candidates to table
3.308 * [progress]: [Phase 3 of 3] Extracting.
3.314 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
3.315 * * [simplify]: iteration 1: (6 enodes)
3.315 * * [simplify]: Extracting #0: cost 1 inf + 0
3.315 * * [simplify]: Extracting #1: cost 3 inf + 0
3.315 * * [simplify]: Extracting #2: cost 6 inf + 0
3.315 * * [simplify]: Extracting #3: cost 2 inf + 215
3.315 * * [simplify]: Extracting #4: cost 0 inf + 890
3.315 * [simplify]: Simplified to:
  (- (pow x 4) (pow y 4))
6.221 * [regime-testing]: Baseline error score: 0.0031253906738342293
6.224 * [regime-testing]: Oracle error score: 0.0031253906738342293
6.224 * [regime-testing]: End program error score: 0.0031253906738342293