1.074 * [progress]: [Phase 1 of 3] Setting up.
0.004 * * * [progress]: [1/2] Preparing points
0.148 * * * [progress]: [2/2] Setting up program.
0.155 * [progress]: [Phase 2 of 3] Improving.
0.155 * * * * [progress]: [ 1 / 1 ] simplifiying candidate #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
0.158 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
0.160 * * [simplify]: iteration 0: 6 enodes
0.169 * * [simplify]: iteration 1: 14 enodes
0.176 * * [simplify]: iteration 2: 34 enodes
0.189 * * [simplify]: iteration 3: 72 enodes
0.204 * * [simplify]: iteration 4: 233 enodes
0.354 * * [simplify]: iteration 5: 638 enodes
0.705 * * [simplify]: iteration 6: 1743 enodes
1.189 * * [simplify]: iteration complete: 5023 enodes
1.190 * * [simplify]: Extracting #0: cost 1 inf + 0
1.191 * * [simplify]: Extracting #1: cost 204 inf + 0
1.195 * * [simplify]: Extracting #2: cost 1167 inf + 0
1.206 * * [simplify]: Extracting #3: cost 1937 inf + 1186
1.235 * * [simplify]: Extracting #4: cost 1197 inf + 85691
1.316 * * [simplify]: Extracting #5: cost 130 inf + 245851
1.385 * * [simplify]: Extracting #6: cost 3 inf + 268216
1.458 * * [simplify]: Extracting #7: cost 0 inf + 268975
1.533 * [simplify]: Simplified to:
  (* (+ (* y y) (* x x)) (- (* x x) (* y y)))
1.544 * * [progress]: iteration 1 / 4
1.544 * * * [progress]: picking best candidate
1.549 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4) (pow y 4)))>
1.549 * * * [progress]: localizing error
1.563 * * * [progress]: generating rewritten candidates
1.564 * * * [progress]: generating series expansions
1.564 * * * [progress]: simplifying candidates
1.564 * [simplify]: Simplifying:
  
1.564 * * [simplify]: iteration 0: 0 enodes
1.564 * * [simplify]: iteration complete: 0 enodes
1.564 * * [simplify]: Extracting #0: cost 0 inf + 0
1.564 * [simplify]: Simplified to:
  
1.564 * * * [progress]: adding candidates to table
1.564 * [progress]: [Phase 3 of 3] Extracting.
1.567 * [simplify]: Simplifying:
  (- (pow x 4) (pow y 4))
1.567 * * [simplify]: iteration 0: 6 enodes
1.568 * * [simplify]: iteration complete: 6 enodes
1.568 * * [simplify]: Extracting #0: cost 1 inf + 0
1.568 * * [simplify]: Extracting #1: cost 3 inf + 0
1.568 * * [simplify]: Extracting #2: cost 6 inf + 0
1.568 * * [simplify]: Extracting #3: cost 2 inf + 215
1.568 * * [simplify]: Extracting #4: cost 0 inf + 890
1.568 * [simplify]: Simplified to:
  (- (pow x 4) (pow y 4))
3.394 * [regime-testing]: Baseline error score: 0.0031985201276060952
3.397 * [regime-testing]: Oracle error score: 0.0031985201276060952
3.397 * [regime-testing]: End program error score: 0.0031985201276060952