0.538 * [progress]: [Phase 1 of 3] Setting up.
0.004 * * * [progress]: [1/2] Preparing points
0.197 * * * [progress]: [2/2] Setting up program.
0.203 * [progress]: [Phase 2 of 3] Improving.
0.204 * * * * [progress]: [ 1 / 1 ] simplifiying candidate #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
0.207 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
0.208 * * [simplify]: iteration 0: 6 enodes
0.216 * * [simplify]: iteration 1: 14 enodes
0.224 * * [simplify]: iteration 2: 34 enodes
0.237 * * [simplify]: iteration 3: 72 enodes
0.267 * * [simplify]: iteration 4: 233 enodes
0.418 * * [simplify]: iteration 5: 638 enodes
0.733 * * [simplify]: iteration 6: 1743 enodes
1.073 * * [simplify]: iteration complete: 5023 enodes
1.074 * * [simplify]: Extracting #0: cost 1 inf + 0
1.075 * * [simplify]: Extracting #1: cost 204 inf + 0
1.077 * * [simplify]: Extracting #2: cost 1167 inf + 0
1.083 * * [simplify]: Extracting #3: cost 1937 inf + 1186
1.098 * * [simplify]: Extracting #4: cost 1197 inf + 85691
1.176 * * [simplify]: Extracting #5: cost 130 inf + 245851
1.223 * * [simplify]: Extracting #6: cost 3 inf + 268216
1.271 * * [simplify]: Extracting #7: cost 0 inf + 268975
1.344 * [simplify]: Simplified to:
  (* (+ (* y y) (* x x)) (- (* x x) (* y y)))
1.350 * * [progress]: iteration 1 / 4
1.350 * * * [progress]: picking best candidate
1.352 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
1.353 * * * [progress]: localizing error
1.364 * * * [progress]: generating rewritten candidates
1.365 * * * [progress]: generating series expansions
1.365 * * * [progress]: simplifying candidates
1.365 * [simplify]: Simplifying:
  
1.365 * * [simplify]: iteration 0: 0 enodes
1.365 * * [simplify]: iteration complete: 0 enodes
1.366 * * [simplify]: Extracting #0: cost 0 inf + 0
1.366 * [simplify]: Simplified to:
  
1.366 * * * [progress]: adding candidates to table
1.366 * [progress]: [Phase 3 of 3] Extracting.
1.369 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
1.369 * * [simplify]: iteration 0: 6 enodes
1.369 * * [simplify]: iteration complete: 6 enodes
1.369 * * [simplify]: Extracting #0: cost 1 inf + 0
1.369 * * [simplify]: Extracting #1: cost 3 inf + 0
1.369 * * [simplify]: Extracting #2: cost 6 inf + 0
1.369 * * [simplify]: Extracting #3: cost 2 inf + 215
1.369 * * [simplify]: Extracting #4: cost 0 inf + 890
1.369 * [simplify]: Simplified to:
  (- (pow x 4) (pow y 4))
3.945 * [regime-testing]: Baseline error score: 0.002125265658207276
3.949 * [regime-testing]: Oracle error score: 0.002125265658207276
3.950 * [regime-testing]: End program error score: 0.002125265658207276