45.496 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.024 * * * [progress]: [2/2] Setting up program.
0.026 * [progress]: [Phase 2 of 3] Improving.
0.026 * [simplify]: Simplifying:
  (- (* a a) (* b b))
0.026 * * [simplify]: Extracting # 0 : cost  0
0.026 * * [simplify]: Extracting # 1 : cost  0
0.026 * * [simplify]: Extracting # 2 : cost  0
0.026 * * [simplify]: Extracting # 3 : cost  0
0.026 * * [simplify]: Extracting # 4 : cost  0
0.026 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.027 * * [simplify]: Extracting # 0 : cost  0
0.027 * * [simplify]: Extracting # 1 : cost  0
0.027 * * [simplify]: Extracting # 2 : cost  0
0.027 * * [simplify]: iteration  1 :  11  enodes  (cost  7 )
0.029 * * [simplify]: Extracting # 0 : cost  0
0.029 * * [simplify]: Extracting # 1 : cost  0
0.029 * * [simplify]: Extracting # 2 : cost  0
0.029 * * [simplify]: iteration  2 :  18  enodes  (cost  7 )
0.032 * * [simplify]: Extracting # 0 : cost  0
0.032 * * [simplify]: Extracting # 1 : cost  0
0.032 * * [simplify]: Extracting # 2 : cost  0
0.032 * * [simplify]: iteration  3 :  35  enodes  (cost  7 )
0.040 * * [simplify]: Extracting # 0 : cost  0
0.040 * * [simplify]: Extracting # 1 : cost  0
0.040 * * [simplify]: Extracting # 2 : cost  0
0.040 * * [simplify]: iteration  4 :  67  enodes  (cost  7 )
0.067 * * [simplify]: Extracting # 0 : cost  0
0.067 * * [simplify]: Extracting # 1 : cost  0
0.068 * * [simplify]: Extracting # 2 : cost  0
0.068 * * [simplify]: iteration  5 :  160  enodes  (cost  7 )
0.120 * * [simplify]: Extracting # 0 : cost  0
0.121 * * [simplify]: Extracting # 1 : cost  0
0.121 * * [simplify]: Extracting # 2 : cost  0
0.121 * * [simplify]: iteration  6 :  271  enodes  (cost  7 )
0.239 * * [simplify]: Extracting # 0 : cost  0
0.240 * * [simplify]: Extracting # 1 : cost  0
0.240 * * [simplify]: Extracting # 2 : cost  0
0.240 * * [simplify]: Extracting # 3 : cost  0
0.241 * * [simplify]: iteration  7 :  514  enodes  (cost  7 )
1.291 * * [simplify]: Extracting # 0 : cost  0
1.293 * * [simplify]: Extracting # 1 : cost  0
1.295 * * [simplify]: Extracting # 2 : cost  0
1.296 * * [simplify]: Extracting # 3 : cost  0
1.298 * * [simplify]: Extracting # 4 : cost  0
1.299 * * [simplify]: iteration  8 :  1901  enodes  (cost  7 )
10.550 * * [simplify]: Extracting # 0 : cost  0
10.886 * * [simplify]: Extracting # 1 : cost  0
10.891 * * [simplify]: Extracting # 2 : cost  0
10.896 * * [simplify]: Extracting # 3 : cost  0
10.901 * * [simplify]: Extracting # 4 : cost  0
10.906 * * [simplify]: iteration done:  5001  enodes  (cost  7 )
10.906 * [simplify]: Simplified to:
  (- (* a a) (* b b))
10.907 * * [progress]: iteration 1 / 4
10.907 * * * [progress]: picking best candidate
10.909 * * * * [pick]: Picked  #<alt (λ (a b) (- (* a a) (* b b)))>
10.909 * * * [progress]: localizing error
10.918 * * * [progress]: generating rewritten candidates
10.918 * * * [progress]: generating series expansions
10.918 * * * [progress]: simplifying candidates
10.919 * [simplify]: Simplifying:
  
10.919 * * [simplify]: Extracting # 0 : cost  0
10.919 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
10.919 * * [simplify]: Extracting # 0 : cost  0
10.919 * * [simplify]: iteration done:  0  enodes  (cost  0 )
10.919 * [simplify]: Simplified to:
  
10.919 * * * [progress]: adding candidates to table
10.919 * [progress]: [Phase 3 of 3] Extracting.
10.921 * [simplify]: Simplifying:
  (- (* a a) (* b b))
10.922 * * [simplify]: Extracting # 0 : cost  0
10.922 * * [simplify]: Extracting # 1 : cost  0
10.922 * * [simplify]: Extracting # 2 : cost  0
10.922 * * [simplify]: Extracting # 3 : cost  0
10.922 * * [simplify]: Extracting # 4 : cost  0
10.922 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
10.922 * * [simplify]: Extracting # 0 : cost  0
10.922 * * [simplify]: iteration done:  5  enodes  (cost  7 )
10.922 * [simplify]: Simplified to:
  (- (* a a) (* b b))
12.156 * [regime-testing]: End program error score: 0.006500812601575197
12.178 * [regime-testing]: Target error score: 0.0011251406425803225