0.082 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.023 * * * [progress]: [2/2] Setting up program.
0.025 * [progress]: [Phase 2 of 3] Improving.
0.025 * [simplify]: Simplifying:
  (- (* x x) (* y y))
0.025 * * [simplify]: Extracting # 0 : cost  0
0.025 * * [simplify]: Extracting # 1 : cost  0
0.025 * * [simplify]: Extracting # 2 : cost  0
0.025 * * [simplify]: Extracting # 3 : cost  0
0.025 * * [simplify]: Extracting # 4 : cost  0
0.025 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.026 * * [simplify]: Extracting # 0 : cost  0
0.026 * * [simplify]: Extracting # 1 : cost  0
0.026 * * [simplify]: Extracting # 2 : cost  0
0.026 * * [simplify]: iteration  1 :  11  enodes  (cost  7 )
0.028 * * [simplify]: Extracting # 0 : cost  0
0.028 * * [simplify]: Extracting # 1 : cost  0
0.028 * * [simplify]: Extracting # 2 : cost  0
0.028 * * [simplify]: iteration  2 :  18  enodes  (cost  7 )
0.031 * * [simplify]: Extracting # 0 : cost  0
0.031 * * [simplify]: Extracting # 1 : cost  0
0.031 * * [simplify]: Extracting # 2 : cost  0
0.031 * * [simplify]: iteration  3 :  35  enodes  (cost  7 )
0.039 * * [simplify]: Extracting # 0 : cost  0
0.039 * * [simplify]: Extracting # 1 : cost  0
0.039 * * [simplify]: Extracting # 2 : cost  0
0.039 * * [simplify]: iteration  4 :  67  enodes  (cost  7 )
0.059 * * [simplify]: Extracting # 0 : cost  0
0.059 * * [simplify]: Extracting # 1 : cost  0
0.059 * * [simplify]: Extracting # 2 : cost  0
0.060 * * [simplify]: iteration  5 :  160  enodes  (cost  7 )
0.172 * * [simplify]: Extracting # 0 : cost  0
0.173 * * [simplify]: Extracting # 1 : cost  0
0.173 * * [simplify]: Extracting # 2 : cost  0
0.173 * * [simplify]: iteration  6 :  271  enodes  (cost  7 )
0.320 * * [simplify]: Extracting # 0 : cost  0
0.320 * * [simplify]: Extracting # 1 : cost  0
0.322 * * [simplify]: Extracting # 2 : cost  0
0.322 * * [simplify]: Extracting # 3 : cost  0
0.323 * * [simplify]: iteration  7 :  514  enodes  (cost  7 )
1.618 * * [simplify]: Extracting # 0 : cost  0
1.620 * * [simplify]: Extracting # 1 : cost  0
1.622 * * [simplify]: Extracting # 2 : cost  0
1.624 * * [simplify]: Extracting # 3 : cost  0
1.625 * * [simplify]: Extracting # 4 : cost  0
1.627 * * [simplify]: iteration  8 :  1901  enodes  (cost  7 )
12.404 * * [simplify]: Extracting # 0 : cost  0
12.423 * * [simplify]: Extracting # 1 : cost  0
12.426 * * [simplify]: Extracting # 2 : cost  0
12.433 * * [simplify]: Extracting # 3 : cost  0
12.436 * * [simplify]: Extracting # 4 : cost  0
12.440 * * [simplify]: iteration done:  5001  enodes  (cost  7 )
12.440 * [simplify]: Simplified to:
  (- (* x x) (* y y))
12.440 * * [progress]: iteration 1 / 4
12.440 * * * [progress]: picking best candidate
12.442 * * * * [pick]: Picked  #<alt (λ (x y) (- (* x x) (* y y)))>
12.442 * * * [progress]: localizing error
12.447 * * * [progress]: generating rewritten candidates
12.447 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
12.459 * * * [progress]: generating series expansions
12.459 * * * * [progress]: [ 1 / 1 ] generating series at (2)