0.003 * [progress]: [Phase 1 of 3] Setting up.
0.005 * * * [progress]: [1/2] Preparing points
0.183 * * * [progress]: [2/2] Setting up program.
0.189 * [progress]: [Phase 2 of 3] Improving.
0.190 * * * * [progress]: [ 1 / 1 ] simplifiying candidate #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
0.193 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
0.194 * * [simplify]: iteration 1: (6 enodes)
0.203 * * [simplify]: iteration 2: (26 enodes)
0.214 * * [simplify]: iteration 3: (53 enodes)
0.230 * * [simplify]: iteration 4: (90 enodes)
0.249 * * [simplify]: iteration 5: (148 enodes)
0.291 * * [simplify]: iteration 6: (285 enodes)
0.422 * * [simplify]: iteration 7: (878 enodes)
1.354 * * [simplify]: Extracting #0: cost 1 inf + 0
1.355 * * [simplify]: Extracting #1: cost 110 inf + 0
1.357 * * [simplify]: Extracting #2: cost 422 inf + 84
1.374 * * [simplify]: Extracting #3: cost 243 inf + 33094
1.399 * * [simplify]: Extracting #4: cost 24 inf + 82899
1.426 * * [simplify]: Extracting #5: cost 7 inf + 86859
1.465 * * [simplify]: Extracting #6: cost 0 inf + 89216
1.501 * [simplify]: Simplified to:
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
1.513 * * [progress]: iteration 1 / 4
1.513 * * * [progress]: picking best candidate
1.518 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
1.518 * * * [progress]: localizing error
1.541 * * * [progress]: generating rewritten candidates
1.542 * * * [progress]: generating series expansions
1.543 * * * [progress]: simplifying candidates
1.543 * [simplify]: Simplifying:
  
1.543 * * [simplify]: iteration 1: (0 enodes)
1.543 * * [simplify]: Extracting #0: cost 0 inf + 0
1.543 * [simplify]: Simplified to:
  
1.543 * * * [progress]: adding candidates to table
1.544 * [progress]: [Phase 3 of 3] Extracting.
1.549 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
1.549 * * [simplify]: iteration 1: (6 enodes)
1.549 * * [simplify]: Extracting #0: cost 1 inf + 0
1.549 * * [simplify]: Extracting #1: cost 3 inf + 0
1.549 * * [simplify]: Extracting #2: cost 6 inf + 0
1.550 * * [simplify]: Extracting #3: cost 2 inf + 215
1.550 * * [simplify]: Extracting #4: cost 0 inf + 890
1.550 * [simplify]: Simplified to:
  (- (pow x 4) (pow y 4))
4.445 * [regime-testing]: Baseline error score: 0.002125265658207276
4.450 * [regime-testing]: Oracle error score: 0.002125265658207276
4.450 * [regime-testing]: End program error score: 0.002125265658207276