12.567 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.056 * * * [progress]: [2/2] Setting up program.
0.060 * [progress]: [Phase 2 of 3] Improving.
0.060 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
0.060 * * [simplify]: iteration 0: 6 enodes
0.062 * * [simplify]: iteration 1: 14 enodes
0.065 * * [simplify]: iteration 2: 30 enodes
0.093 * * [simplify]: iteration 3: 74 enodes
0.124 * * [simplify]: iteration 4: 218 enodes
0.239 * * [simplify]: iteration 5: 1149 enodes
1.151 * * [simplify]: iteration complete: 5001 enodes
1.151 * * [simplify]: Extracting #0: cost 1 inf + 0
1.153 * * [simplify]: Extracting #1: cost 183 inf + 0
1.161 * * [simplify]: Extracting #2: cost 1562 inf + 0
1.172 * * [simplify]: Extracting #3: cost 1806 inf + 5
1.184 * * [simplify]: Extracting #4: cost 1773 inf + 293
1.195 * * [simplify]: Extracting #5: cost 1040 inf + 14446
1.206 * * [simplify]: Extracting #6: cost 129 inf + 28053
1.221 * * [simplify]: Extracting #7: cost 0 inf + 28303
1.231 * * [simplify]: Extracting #8: cost 0 inf + 28283
1.241 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
1.241 * * [progress]: iteration 1 / 4
1.241 * * * [progress]: picking best candidate
1.247 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
1.247 * * * [progress]: localizing error
1.263 * * * [progress]: generating rewritten candidates
1.263 * * * [progress]: generating series expansions
1.263 * * * [progress]: simplifying candidates
1.263 * [simplify]: Simplifying:
  
1.263 * * [simplify]: iteration 0: 0 enodes
1.263 * * [simplify]: iteration complete: 0 enodes
1.263 * * [simplify]: Extracting #0: cost 0 inf + 0
1.263 * [simplify]: Simplified to:
  
1.263 * * * [progress]: adding candidates to table
1.264 * [progress]: [Phase 3 of 3] Extracting.
1.269 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
1.269 * * [simplify]: iteration 0: 6 enodes
1.270 * * [simplify]: iteration complete: 6 enodes
1.270 * * [simplify]: Extracting #0: cost 1 inf + 0
1.270 * * [simplify]: Extracting #1: cost 3 inf + 0
1.270 * * [simplify]: Extracting #2: cost 6 inf + 0
1.270 * * [simplify]: Extracting #3: cost 2 inf + 6
1.270 * * [simplify]: Extracting #4: cost 0 inf + 16
1.270 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
3.682 * [regime-testing]: Baseline error score: 0.0031253906738342293
3.684 * [regime-testing]: Oracle error score: 0.0031253906738342293
3.684 * [regime-testing]: End program error score: 0.0031253906738342293