0.956 * [progress]: [Phase 1 of 3] Setting up.
0.003 * * * [progress]: [1/2] Preparing points
0.149 * * * [progress]: [2/2] Setting up program.
0.152 * [progress]: [Phase 2 of 3] Improving.
0.153 * * * * [progress]: [ 1 / 1 ] simplifiying candidate #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
0.154 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
0.155 * * [simplify]: iteration 1: (6 enodes)
0.160 * * [simplify]: iteration 2: (14 enodes)
0.165 * * [simplify]: iteration 3: (38 enodes)
0.197 * * [simplify]: iteration 4: (51 enodes)
0.201 * * [simplify]: iteration 5: (68 enodes)
0.209 * * [simplify]: iteration 6: (123 enodes)
0.233 * * [simplify]: iteration 7: (277 enodes)
0.305 * * [simplify]: iteration 8: (551 enodes)
0.508 * * [simplify]: iteration 9: (1277 enodes)
3.040 * * [simplify]: Extracting #0: cost 1 inf + 0
3.040 * * [simplify]: Extracting #1: cost 155 inf + 0
3.044 * * [simplify]: Extracting #2: cost 796 inf + 1
3.049 * * [simplify]: Extracting #3: cost 861 inf + 3213
3.070 * * [simplify]: Extracting #4: cost 496 inf + 101312
3.163 * * [simplify]: Extracting #5: cost 26 inf + 239491
3.303 * * [simplify]: Extracting #6: cost 0 inf + 238309
3.412 * * [simplify]: Extracting #7: cost 0 inf + 238189
3.501 * [simplify]: Simplified to:
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
3.514 * * [progress]: iteration 1 / 4
3.514 * * * [progress]: picking best candidate
3.519 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
3.519 * * * [progress]: localizing error
3.530 * * * [progress]: generating rewritten candidates
3.531 * * * [progress]: generating series expansions
3.531 * * * [progress]: simplifying candidates
3.531 * [simplify]: Simplifying:
  
3.531 * * [simplify]: iteration 1: (0 enodes)
3.531 * * [simplify]: Extracting #0: cost 0 inf + 0
3.531 * [simplify]: Simplified to:
  
3.531 * * * [progress]: adding candidates to table
3.531 * [progress]: [Phase 3 of 3] Extracting.
3.534 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
3.534 * * [simplify]: iteration 1: (6 enodes)
3.534 * * [simplify]: Extracting #0: cost 1 inf + 0
3.534 * * [simplify]: Extracting #1: cost 3 inf + 0
3.534 * * [simplify]: Extracting #2: cost 6 inf + 0
3.534 * * [simplify]: Extracting #3: cost 2 inf + 215
3.535 * * [simplify]: Extracting #4: cost 0 inf + 890
3.535 * [simplify]: Simplified to:
  (- (pow x 4) (pow y 4))
5.832 * [regime-testing]: Baseline error score: 0.003375421927740968
5.834 * [regime-testing]: Oracle error score: 0.003375421927740968
5.835 * [regime-testing]: End program error score: 0.003375421927740968