17.032 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.028 * * * [progress]: [2/2] Setting up program.
0.032 * [progress]: [Phase 2 of 3] Improving.
0.033 * [simplify]: Simplifying:
  (- (* a a) (* b b))
0.033 * * [simplify]: iteration 0: 5 enodes
0.035 * * [simplify]: iteration 1: 11 enodes
0.038 * * [simplify]: iteration 2: 18 enodes
0.043 * * [simplify]: iteration 3: 35 enodes
0.056 * * [simplify]: iteration 4: 67 enodes
0.099 * * [simplify]: iteration 5: 160 enodes
0.153 * * [simplify]: iteration 6: 366 enodes
0.362 * * [simplify]: iteration 7: 901 enodes
1.928 * * [simplify]: iteration 8: 3866 enodes
4.089 * * [simplify]: iteration complete: 5000 enodes
4.089 * * [simplify]: Extracting #0: cost 1 inf + 0
4.090 * * [simplify]: Extracting #1: cost 251 inf + 0
4.096 * * [simplify]: Extracting #2: cost 671 inf + 485
4.100 * * [simplify]: Extracting #3: cost 153 inf + 5304
4.104 * * [simplify]: Extracting #4: cost 0 inf + 6977
4.108 * [simplify]: Simplified to:
  (- (* a a) (* b b))
4.108 * * [progress]: iteration 1 / 4
4.108 * * * [progress]: picking best candidate
4.110 * * * * [pick]: Picked  #<alt (λ (a b) (- (* a a) (* b b)))>
4.111 * * * [progress]: localizing error
4.117 * * * [progress]: generating rewritten candidates
4.117 * * * [progress]: generating series expansions
4.117 * * * [progress]: simplifying candidates
4.117 * [simplify]: Simplifying:
  
4.117 * * [simplify]: iteration 0: 0 enodes
4.117 * * [simplify]: iteration complete: 0 enodes
4.117 * * [simplify]: Extracting #0: cost 0 inf + 0
4.117 * [simplify]: Simplified to:
  
4.117 * * * [progress]: adding candidates to table
4.117 * [progress]: [Phase 3 of 3] Extracting.
4.122 * [simplify]: Simplifying:
  (- (* a a) (* b b))
4.122 * * [simplify]: iteration 0: 5 enodes
4.123 * * [simplify]: iteration complete: 5 enodes
4.123 * * [simplify]: Extracting #0: cost 1 inf + 0
4.123 * * [simplify]: Extracting #1: cost 3 inf + 0
4.123 * * [simplify]: Extracting #2: cost 5 inf + 0
4.123 * * [simplify]: Extracting #3: cost 2 inf + 5
4.123 * * [simplify]: Extracting #4: cost 0 inf + 15
4.123 * [simplify]: Simplified to:
  (- (* a a) (* b b))
5.346 * [regime-testing]: Baseline error score: 0.006698957682300432
5.348 * [regime-testing]: Oracle error score: 0.006698957682300432
5.348 * [regime-testing]: End program error score: 0.006698957682300432
5.432 * [regime-testing]: Target error score: 0.0008751093886735842