0.002 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.025 * * * [progress]: [2/2] Setting up program.
0.027 * [progress]: [Phase 2 of 3] Improving.
0.027 * * * * [progress]: [ 1 / 1 ] simplifiying candidate #<alt (λ (a b) (- (* a a) (* b b)))>
0.028 * [simplify]: Simplifying (- (* a a) (* b b))
0.028 * * [simplify]: iteration 1: (5 enodes)
0.029 * * [simplify]: iteration 2: (20 enodes)
0.033 * * [simplify]: iteration 3: (33 enodes)
0.040 * * [simplify]: iteration 4: (50 enodes)
0.051 * * [simplify]: iteration 5: (91 enodes)
0.075 * * [simplify]: iteration 6: (174 enodes)
0.121 * * [simplify]: iteration 7: (262 enodes)
0.187 * * [simplify]: iteration 8: (460 enodes)
0.488 * * [simplify]: Extracting #0: cost 1 inf + 0
0.488 * * [simplify]: Extracting #1: cost 70 inf + 0
0.489 * * [simplify]: Extracting #2: cost 285 inf + 1
0.493 * * [simplify]: Extracting #3: cost 184 inf + 14263
0.508 * * [simplify]: Extracting #4: cost 10 inf + 45612
0.526 * * [simplify]: Extracting #5: cost 0 inf + 46793
0.540 * [simplify]: Simplified to (- (* a a) (* b b))
0.540 * * * * [progress]: [ 1 / 1 ] simplifiying candidate #<alt (λ (a b) (- (* a a) (* b b)))>
0.540 * [simplify]: Simplified (2) to (λ (a b) (- (* a a) (* b b)))
0.543 * * [progress]: iteration 1 / 4
0.543 * * * [progress]: picking best candidate
0.544 * * * * [pick]: Picked  #<alt (λ (a b) (- (* a a) (* b b)))>
0.544 * * * [progress]: localizing error
0.552 * * * [progress]: generating rewritten candidates
0.552 * * * [progress]: generating series expansions
0.552 * * * [progress]: simplifying candidates
0.553 * [simplify]: Simplifying 
0.553 * * [simplify]: iteration 1: (0 enodes)
0.553 * * [simplify]: Extracting #0: cost 0 inf + 0
0.553 * [simplify]: Simplified to 
0.553 * * * [progress]: adding candidates to table
0.553 * [progress]: [Phase 3 of 3] Extracting.
0.555 * [simplify]: Simplifying (- (* a a) (* b b))
0.555 * * [simplify]: iteration 1: (5 enodes)
0.555 * * [simplify]: Extracting #0: cost 1 inf + 0
0.555 * * [simplify]: Extracting #1: cost 3 inf + 0
0.555 * * [simplify]: Extracting #2: cost 5 inf + 0
0.555 * * [simplify]: Extracting #3: cost 2 inf + 43
0.555 * * [simplify]: Extracting #4: cost 0 inf + 206
0.555 * [simplify]: Simplified to (- (* a a) (* b b))
2.016 * [regime-testing]: Baseline error score: 0.00845653909110823
2.020 * [regime-testing]: Oracle error score: 0.00845653909110823
2.020 * [regime-testing]: End program error score: 0.00845653909110823
2.063 * [regime-testing]: Target error score: 0.00037504688086010754