18.977 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.022 * * * [progress]: [2/2] Setting up program.
0.023 * [progress]: [Phase 2 of 3] Improving.
0.024 * [simplify]: Simplifying:
  (- (* a a) (* b b))
0.024 * * [simplify]: Extracting # 0 : cost  0
0.024 * * [simplify]: Extracting # 1 : cost  0
0.024 * * [simplify]: Extracting # 2 : cost  0
0.024 * * [simplify]: Extracting # 3 : cost  0
0.024 * * [simplify]: Extracting # 4 : cost  0
0.024 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.025 * * [simplify]: Extracting # 0 : cost  0
0.025 * * [simplify]: Extracting # 1 : cost  0
0.025 * * [simplify]: Extracting # 2 : cost  0
0.025 * * [simplify]: iteration  1 :  11  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  2 :  18  enodes  (cost  7 )
0.030 * * [simplify]: Extracting # 0 : cost  0
0.030 * * [simplify]: Extracting # 1 : cost  0
0.030 * * [simplify]: Extracting # 2 : cost  0
0.030 * * [simplify]: iteration  3 :  35  enodes  (cost  7 )
0.038 * * [simplify]: Extracting # 0 : cost  0
0.038 * * [simplify]: Extracting # 1 : cost  0
0.038 * * [simplify]: Extracting # 2 : cost  0
0.038 * * [simplify]: iteration  4 :  67  enodes  (cost  7 )
0.057 * * [simplify]: Extracting # 0 : cost  0
0.057 * * [simplify]: Extracting # 1 : cost  0
0.058 * * [simplify]: Extracting # 2 : cost  0
0.058 * * [simplify]: iteration  5 :  160  enodes  (cost  7 )
0.157 * * [simplify]: Extracting # 0 : cost  0
0.158 * * [simplify]: Extracting # 1 : cost  0
0.158 * * [simplify]: Extracting # 2 : cost  0
0.158 * * [simplify]: iteration  6 :  271  enodes  (cost  7 )
0.287 * * [simplify]: Extracting # 0 : cost  0
0.287 * * [simplify]: Extracting # 1 : cost  0
0.287 * * [simplify]: Extracting # 2 : cost  0
0.288 * * [simplify]: Extracting # 3 : cost  0
0.288 * * [simplify]: iteration  7 :  514  enodes  (cost  7 )
1.570 * * [simplify]: Extracting # 0 : cost  0
1.575 * * [simplify]: Extracting # 1 : cost  0
1.579 * * [simplify]: Extracting # 2 : cost  0
1.583 * * [simplify]: Extracting # 3 : cost  0
1.586 * * [simplify]: Extracting # 4 : cost  0
1.590 * * [simplify]: iteration  8 :  1901  enodes  (cost  7 )
10.315 * * [simplify]: Extracting # 0 : cost  0
10.327 * * [simplify]: Extracting # 1 : cost  0
10.332 * * [simplify]: Extracting # 2 : cost  0
10.335 * * [simplify]: Extracting # 3 : cost  0
10.338 * * [simplify]: Extracting # 4 : cost  0
10.341 * * [simplify]: iteration done:  5001  enodes  (cost  7 )
10.341 * [simplify]: Simplified to:
  (- (* a a) (* b b))
10.341 * * [progress]: iteration 1 / 4
10.342 * * * [progress]: picking best candidate
10.343 * * * * [pick]: Picked  #<alt (λ (a b) (- (* a a) (* b b)))>
10.343 * * * [progress]: localizing error
10.348 * * * [progress]: generating rewritten candidates
10.348 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
10.357 * * * [progress]: generating series expansions
10.357 * * * * [progress]: [ 1 / 1 ] generating series at (2)