0.480 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.124 * * * [progress]: [2/2] Setting up program.
0.131 * [progress]: [Phase 2 of 3] Improving.
0.131 * * * * [progress]: [ 1 / 1 ] simplifiying candidate #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
0.134 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
0.135 * * [simplify]: iteration 1: (6 enodes)
0.143 * * [simplify]: iteration 2: (14 enodes)
0.152 * * [simplify]: iteration 3: (38 enodes)
0.190 * * [simplify]: iteration 4: (53 enodes)
0.200 * * [simplify]: iteration 5: (70 enodes)
0.216 * * [simplify]: iteration 6: (125 enodes)
0.250 * * [simplify]: iteration 7: (279 enodes)
0.354 * * [simplify]: iteration 8: (548 enodes)
0.652 * * [simplify]: iteration 9: (1244 enodes)
3.233 * * [simplify]: Extracting #0: cost 1 inf + 0
3.234 * * [simplify]: Extracting #1: cost 158 inf + 0
3.237 * * [simplify]: Extracting #2: cost 787 inf + 1
3.242 * * [simplify]: Extracting #3: cost 860 inf + 2240
3.274 * * [simplify]: Extracting #4: cost 433 inf + 119991
3.350 * * [simplify]: Extracting #5: cost 9 inf + 243606
3.422 * * [simplify]: Extracting #6: cost 0 inf + 237052
3.543 * * [simplify]: Extracting #7: cost 0 inf + 236974
3.680 * [simplify]: Simplified to:
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
3.695 * * [progress]: iteration 1 / 4
3.695 * * * [progress]: picking best candidate
3.699 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
3.699 * * * [progress]: localizing error
3.721 * * * [progress]: generating rewritten candidates
3.722 * * * [progress]: generating series expansions
3.723 * * * [progress]: simplifying candidates
3.723 * [simplify]: Simplifying:
  
3.723 * * [simplify]: iteration 1: (0 enodes)
3.723 * * [simplify]: Extracting #0: cost 0 inf + 0
3.723 * [simplify]: Simplified to:
  
3.723 * * * [progress]: adding candidates to table
3.724 * [progress]: [Phase 3 of 3] Extracting.
3.729 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
3.729 * * [simplify]: iteration 1: (6 enodes)
3.730 * * [simplify]: Extracting #0: cost 1 inf + 0
3.730 * * [simplify]: Extracting #1: cost 3 inf + 0
3.730 * * [simplify]: Extracting #2: cost 6 inf + 0
3.730 * * [simplify]: Extracting #3: cost 2 inf + 215
3.730 * * [simplify]: Extracting #4: cost 0 inf + 890
3.730 * [simplify]: Simplified to:
  (- (pow x 4) (pow y 4))
6.427 * [regime-testing]: Baseline error score: 0.0023752969121140144
6.432 * [regime-testing]: Oracle error score: 0.0023752969121140144
6.432 * [regime-testing]: End program error score: 0.0023752969121140144