24.904 * [progress]: [Phase 1 of 3] Setting up.
0.003 * * * [progress]: [1/2] Preparing points
0.064 * * * [progress]: [2/2] Setting up program.
0.072 * [progress]: [Phase 2 of 3] Improving.
0.072 * * * * [progress]: [ 1 / 1 ] simplifiying candidate #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
0.072 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
0.073 * * [simplify]: iteration 0: 6 enodes
0.077 * * [simplify]: iteration 1: 14 enodes
0.085 * * [simplify]: iteration 2: 30 enodes
0.132 * * [simplify]: iteration 3: 74 enodes
0.216 * * [simplify]: iteration 4: 207 enodes
0.421 * * [simplify]: iteration 5: 602 enodes
1.984 * * [simplify]: iteration 6: 2815 enodes
5.268 * * [simplify]: iteration complete: 5003 enodes
5.268 * * [simplify]: Extracting #0: cost 1 inf + 0
5.269 * * [simplify]: Extracting #1: cost 262 inf + 0
5.274 * * [simplify]: Extracting #2: cost 599 inf + 0
5.279 * * [simplify]: Extracting #3: cost 662 inf + 1188
5.287 * * [simplify]: Extracting #4: cost 586 inf + 28673
5.342 * * [simplify]: Extracting #5: cost 260 inf + 263997
5.538 * * [simplify]: Extracting #6: cost 2 inf + 473204
5.785 * * [simplify]: Extracting #7: cost 0 inf + 458513
6.025 * * [simplify]: Extracting #8: cost 0 inf + 455337
6.269 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
6.272 * * [progress]: iteration 1 / 4
6.272 * * * [progress]: picking best candidate
6.290 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
6.290 * * * [progress]: localizing error
6.315 * * * [progress]: generating rewritten candidates
6.315 * * * [progress]: generating series expansions
6.315 * * * [progress]: simplifying candidates
6.315 * [simplify]: Simplifying:
  
6.315 * * [simplify]: iteration 0: 0 enodes
6.315 * * [simplify]: iteration complete: 0 enodes
6.315 * * [simplify]: Extracting #0: cost 0 inf + 0
6.315 * [simplify]: Simplified to:
  
6.315 * * * [progress]: adding candidates to table
6.317 * [progress]: [Phase 3 of 3] Extracting.
6.333 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
6.333 * * [simplify]: iteration 0: 6 enodes
6.333 * * [simplify]: iteration complete: 6 enodes
6.333 * * [simplify]: Extracting #0: cost 1 inf + 0
6.333 * * [simplify]: Extracting #1: cost 3 inf + 0
6.333 * * [simplify]: Extracting #2: cost 6 inf + 0
6.334 * * [simplify]: Extracting #3: cost 2 inf + 215
6.334 * * [simplify]: Extracting #4: cost 0 inf + 890
6.334 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
9.409 * [regime-testing]: Baseline error score: 0.002000250031253907
9.455 * [regime-testing]: Oracle error score: 0.002000250031253907
9.455 * [regime-testing]: End program error score: 0.002000250031253907