0.879 * [progress]: [Phase 1 of 3] Setting up.
0.004 * * * [progress]: [1/2] Preparing points
0.178 * * * [progress]: [2/2] Setting up program.
0.182 * [progress]: [Phase 2 of 3] Improving.
0.182 * * * * [progress]: [ 1 / 1 ] simplifiying candidate #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
0.185 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
0.185 * * [simplify]: iteration 0: 6 enodes
0.191 * * [simplify]: iteration 1: 14 enodes
0.195 * * [simplify]: iteration 2: 34 enodes
0.206 * * [simplify]: iteration 3: 72 enodes
0.257 * * [simplify]: iteration 4: 233 enodes
0.360 * * [simplify]: iteration 5: 638 enodes
0.649 * * [simplify]: iteration 6: 1743 enodes
0.934 * * [simplify]: iteration complete: 2000 enodes
0.934 * * [simplify]: Extracting #0: cost 1 inf + 0
0.934 * * [simplify]: Extracting #1: cost 88 inf + 0
0.935 * * [simplify]: Extracting #2: cost 315 inf + 0
0.938 * * [simplify]: Extracting #3: cost 423 inf + 2194
0.942 * * [simplify]: Extracting #4: cost 236 inf + 18489
0.952 * * [simplify]: Extracting #5: cost 22 inf + 51292
0.964 * * [simplify]: Extracting #6: cost 0 inf + 56366
0.977 * [simplify]: Simplified to:
  (- (* (* x x) (* x x)) (* (* y y) (* y y)))
0.985 * * [progress]: iteration 1 / 4
0.985 * * * [progress]: picking best candidate
0.990 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
0.990 * * * [progress]: localizing error
1.021 * * * [progress]: generating rewritten candidates
1.022 * * * [progress]: generating series expansions
1.023 * * * [progress]: simplifying candidates
1.023 * [simplify]: Simplifying:
  
1.023 * * [simplify]: iteration 0: 0 enodes
1.023 * * [simplify]: iteration complete: 0 enodes
1.023 * * [simplify]: Extracting #0: cost 0 inf + 0
1.023 * [simplify]: Simplified to:
  
1.023 * * * [progress]: adding candidates to table
1.024 * [progress]: [Phase 3 of 3] Extracting.
1.029 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
1.029 * * [simplify]: iteration 0: 6 enodes
1.030 * * [simplify]: iteration complete: 6 enodes
1.030 * * [simplify]: Extracting #0: cost 1 inf + 0
1.030 * * [simplify]: Extracting #1: cost 3 inf + 0
1.030 * * [simplify]: Extracting #2: cost 6 inf + 0
1.030 * * [simplify]: Extracting #3: cost 2 inf + 215
1.030 * * [simplify]: Extracting #4: cost 0 inf + 890
1.030 * [simplify]: Simplified to:
  (- (pow x 4) (pow y 4))
3.982 * [regime-testing]: Baseline error score: 0.0032504063007875983
3.985 * [regime-testing]: Oracle error score: 0.0032504063007875983
3.985 * [regime-testing]: End program error score: 0.0032504063007875983