0.002 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.045 * * * [progress]: [2/2] Setting up program.
0.049 * [progress]: [Phase 2 of 3] Improving.
0.049 * * * * [progress]: [ 1 / 1 ] simplifiying candidate #<alt (λ (a b) (- (* a a) (* b b)))>
0.049 * [simplify]: Simplifying (- (* a a) (* b b))
0.049 * * [simplify]: iters left: 4 (5 enodes)
0.052 * * [simplify]: iters left: 3 (21 enodes)
0.059 * * [simplify]: iters left: 2 (34 enodes)
0.069 * * [simplify]: iters left: 1 (53 enodes)
0.087 * * [simplify]: Extracting #0: cost 1 inf + 0
0.088 * * [simplify]: Extracting #1: cost 14 inf + 0
0.088 * * [simplify]: Extracting #2: cost 25 inf + 165
0.088 * * [simplify]: Extracting #3: cost 9 inf + 1168
0.089 * * [simplify]: Extracting #4: cost 1 inf + 1903
0.091 * * [simplify]: Extracting #5: cost 0 inf + 1970
0.092 * [simplify]: Simplified to (- (* a a) (* b b))
0.092 * [simplify]: Simplified (2) to (λ (a b) (- (* a a) (* b b)))
0.103 * * [progress]: iteration 1 / 4
0.103 * * * [progress]: picking best candidate
0.107 * * * * [pick]: Picked  #<alt (λ (a b) (- (* a a) (* b b)))>
0.107 * * * [progress]: localizing error
0.124 * * * [progress]: generating rewritten candidates
0.125 * * * [progress]: generating series expansions
0.125 * * * [progress]: simplifying candidates
0.125 * * * [progress]: adding candidates to table
0.125 * [progress]: [Phase 3 of 3] Extracting.
0.129 * [simplify]: Simplifying (- (* a a) (* b b))
0.129 * * [simplify]: iters left: 4 (5 enodes)
0.130 * * [simplify]: Extracting #0: cost 1 inf + 0
0.130 * * [simplify]: Extracting #1: cost 3 inf + 0
0.130 * * [simplify]: Extracting #2: cost 5 inf + 0
0.130 * * [simplify]: Extracting #3: cost 2 inf + 43
0.130 * * [simplify]: Extracting #4: cost 0 inf + 206
0.130 * [simplify]: Simplified to (- (* a a) (* b b))
1.477 * [regime-testing]: Baseline error score: 0.005750718839854982
1.482 * [regime-testing]: Oracle error score: 0.005750718839854982
1.482 * [regime-testing]: End program error score: 0.005750718839854982
1.545 * [regime-testing]: Target error score: 0.00025003125390673836