1553851071.894 * [progress]: [Phase 1 of 3] Setting up.
1553851071.894 * * * [progress]: [1/2] Preparing points
1553851071.950 * * * [progress]: [2/2] Setting up program.
1553851071.953 * [progress]: [Phase 2 of 3] Improving.
1553851071.953 * * * * [progress]: [ 1 / 1 ] simplifiying candidate #<alt (λ (a b) (- (* a a) (* b b)))>
1553851071.954 * [simplify]: Simplifying (- (* a a) (* b b))
1553851071.954 * * [simplify]: iters left: 4 (5 enodes)
1553851071.956 * * [simplify]: iters left: 3 (20 enodes)
1553851071.963 * * [simplify]: iters left: 2 (33 enodes)
1553851071.973 * * [simplify]: iters left: 1 (50 enodes)
1553851071.990 * * [simplify]: Extracting #0: cost 1 inf + 0
1553851071.990 * * [simplify]: Extracting #1: cost 11 inf + 0
1553851071.990 * * [simplify]: Extracting #2: cost 29 inf + 0
1553851071.990 * * [simplify]: Extracting #3: cost 19 inf + 455
1553851071.991 * * [simplify]: Extracting #4: cost 0 inf + 2130
1553851071.993 * * [simplify]: Extracting #5: cost 0 inf + 1970
1553851071.994 * [simplify]: Simplified to (* (+ a b) (- a b))
1553851071.994 * [simplify]: Simplified (2) to (λ (a b) (* (+ a b) (- a b)))
1553851071.998 * * [progress]: iteration 1 / 4
1553851071.998 * * * [progress]: picking best candidate
1553851072.001 * * * * [pick]: Picked  #<alt (λ (a b) (- (* a a) (* b b)))>
1553851072.001 * * * [progress]: localizing error
1553851072.018 * * * [progress]: generating rewritten candidates
1553851072.018 * * * [progress]: generating series expansions
1553851072.018 * * * [progress]: simplifying candidates
1553851072.018 * * * [progress]: adding candidates to table
1553851072.019 * [progress]: [Phase 3 of 3] Extracting.
1553851072.022 * [simplify]: Simplifying (- (* a a) (* b b))
1553851072.022 * * [simplify]: iters left: 4 (5 enodes)
1553851072.023 * * [simplify]: Extracting #0: cost 1 inf + 0
1553851072.023 * * [simplify]: Extracting #1: cost 3 inf + 0
1553851072.023 * * [simplify]: Extracting #2: cost 5 inf + 0
1553851072.023 * * [simplify]: Extracting #3: cost 2 inf + 43
1553851072.023 * * [simplify]: Extracting #4: cost 0 inf + 206
1553851072.023 * [simplify]: Simplified to (- (* a a) (* b b))
1553851073.485 * [regime-testing]: Baseline error score: 0.006125765720715089
1553851073.487 * [regime-testing]: Oracle error score: 0.006125765720715089
1553851073.487 * [regime-testing]: End program error score: 0.006125765720715089
1553851073.531 * [regime-testing]: Target error score: 0.001375171896487061