0.913 * [progress]: [Phase 1 of 3] Setting up.
0.004 * * * [progress]: [1/2] Preparing points
0.164 * * * [progress]: [2/2] Setting up program.
0.170 * [progress]: [Phase 2 of 3] Improving.
0.171 * * * * [progress]: [ 1 / 1 ] simplifiying candidate #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
0.174 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
0.175 * * [simplify]: iteration 0: 6 enodes
0.184 * * [simplify]: iteration 1: 14 enodes
0.192 * * [simplify]: iteration 2: 35 enodes
0.205 * * [simplify]: iteration 3: 78 enodes
0.280 * * [simplify]: iteration 4: 238 enodes
0.557 * * [simplify]: iteration 5: 645 enodes
0.875 * * [simplify]: iteration 6: 1930 enodes
3.800 * * [simplify]: iteration complete: 5001 enodes
3.801 * * [simplify]: Extracting #0: cost 1 inf + 0
3.803 * * [simplify]: Extracting #1: cost 209 inf + 0
3.810 * * [simplify]: Extracting #2: cost 717 inf + 2625
3.827 * * [simplify]: Extracting #3: cost 395 inf + 58590
3.901 * * [simplify]: Extracting #4: cost 27 inf + 119891
3.949 * * [simplify]: Extracting #5: cost 6 inf + 122918
4.008 * * [simplify]: Extracting #6: cost 0 inf + 124436
4.064 * [simplify]: Simplified to:
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
4.079 * * [progress]: iteration 1 / 4
4.080 * * * [progress]: picking best candidate
4.085 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
4.085 * * * [progress]: localizing error
4.105 * * * [progress]: generating rewritten candidates
4.106 * * * [progress]: generating series expansions
4.106 * * * [progress]: simplifying candidates
4.106 * [simplify]: Simplifying:
  
4.106 * * [simplify]: iteration 0: 0 enodes
4.106 * * [simplify]: iteration complete: 0 enodes
4.106 * * [simplify]: Extracting #0: cost 0 inf + 0
4.106 * [simplify]: Simplified to:
  
4.106 * * * [progress]: adding candidates to table
4.106 * [progress]: [Phase 3 of 3] Extracting.
4.109 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
4.109 * * [simplify]: iteration 0: 6 enodes
4.110 * * [simplify]: iteration complete: 6 enodes
4.110 * * [simplify]: Extracting #0: cost 1 inf + 0
4.110 * * [simplify]: Extracting #1: cost 3 inf + 0
4.110 * * [simplify]: Extracting #2: cost 6 inf + 0
4.110 * * [simplify]: Extracting #3: cost 2 inf + 215
4.110 * * [simplify]: Extracting #4: cost 0 inf + 890
4.110 * [simplify]: Simplified to:
  (- (pow x 4) (pow y 4))
6.800 * [regime-testing]: Baseline error score: 0.002125265658207276
6.804 * [regime-testing]: Oracle error score: 0.002125265658207276
6.805 * [regime-testing]: End program error score: 0.002125265658207276