3.470 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.017 * * * [progress]: [2/2] Setting up program.
0.019 * [progress]: [Phase 2 of 3] Improving.
0.019 * [simplify]: Simplifying:
  (- (* a a) (* b b))
0.019 * * [simplify]: Extracting # 0 : cost  0
0.019 * * [simplify]: Extracting # 1 : cost  0
0.019 * * [simplify]: Extracting # 2 : cost  0
0.019 * * [simplify]: Extracting # 3 : cost  0
0.019 * * [simplify]: Extracting # 4 : cost  0
0.019 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.020 * * [simplify]: Extracting # 0 : cost  0
0.020 * * [simplify]: Extracting # 1 : cost  0
0.020 * * [simplify]: Extracting # 2 : cost  0
0.020 * * [simplify]: iteration  1 :  11  enodes  (cost  7 )
0.022 * * [simplify]: Extracting # 0 : cost  0
0.022 * * [simplify]: Extracting # 1 : cost  0
0.022 * * [simplify]: Extracting # 2 : cost  0
0.022 * * [simplify]: iteration  2 :  18  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  3 :  35  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  4 :  67  enodes  (cost  7 )
0.051 * * [simplify]: Extracting # 0 : cost  0
0.051 * * [simplify]: Extracting # 1 : cost  0
0.051 * * [simplify]: Extracting # 2 : cost  0
0.051 * * [simplify]: iteration  5 :  160  enodes  (cost  7 )
0.099 * * [simplify]: Extracting # 0 : cost  0
0.099 * * [simplify]: Extracting # 1 : cost  0
0.099 * * [simplify]: Extracting # 2 : cost  0
0.100 * * [simplify]: iteration  6 :  271  enodes  (cost  7 )
0.209 * * [simplify]: Extracting # 0 : cost  0
0.209 * * [simplify]: Extracting # 1 : cost  0
0.210 * * [simplify]: Extracting # 2 : cost  0
0.210 * * [simplify]: Extracting # 3 : cost  0
0.210 * * [simplify]: iteration  7 :  514  enodes  (cost  7 )
0.991 * * [simplify]: Extracting # 0 : cost  0
0.993 * * [simplify]: Extracting # 1 : cost  0
0.995 * * [simplify]: Extracting # 2 : cost  0
0.996 * * [simplify]: Extracting # 3 : cost  0
0.998 * * [simplify]: Extracting # 4 : cost  0
0.999 * * [simplify]: iteration  8 :  1901  enodes  (cost  7 )
8.217 * * [simplify]: Extracting # 0 : cost  0
8.229 * * [simplify]: Extracting # 1 : cost  0
8.233 * * [simplify]: Extracting # 2 : cost  0
8.238 * * [simplify]: Extracting # 3 : cost  0
8.241 * * [simplify]: Extracting # 4 : cost  0
8.244 * * [simplify]: iteration done:  5001  enodes  (cost  7 )
8.244 * [simplify]: Simplified to:
  (- (* a a) (* b b))
8.245 * * [progress]: iteration 1 / 4
8.245 * * * [progress]: picking best candidate
8.246 * * * * [pick]: Picked  #<alt (λ (a b) (- (* a a) (* b b)))>
8.246 * * * [progress]: localizing error
8.250 * * * [progress]: generating rewritten candidates
8.250 * * * [progress]: generating series expansions
8.250 * * * [progress]: simplifying candidates
8.250 * [simplify]: Simplifying:
  
8.250 * * [simplify]: Extracting # 0 : cost  0
8.250 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
8.251 * * [simplify]: Extracting # 0 : cost  0
8.251 * * [simplify]: iteration done:  0  enodes  (cost  0 )
8.251 * [simplify]: Simplified to:
  
8.251 * * * [progress]: adding candidates to table
8.251 * [progress]: [Phase 3 of 3] Extracting.
8.252 * [simplify]: Simplifying:
  (- (* a a) (* b b))
8.252 * * [simplify]: Extracting # 0 : cost  0
8.252 * * [simplify]: Extracting # 1 : cost  0
8.252 * * [simplify]: Extracting # 2 : cost  0
8.252 * * [simplify]: Extracting # 3 : cost  0
8.252 * * [simplify]: Extracting # 4 : cost  0
8.252 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
8.252 * * [simplify]: Extracting # 0 : cost  0
8.253 * * [simplify]: iteration done:  5  enodes  (cost  7 )
8.253 * [simplify]: Simplified to:
  (- (* a a) (* b b))
8.809 * [regime-testing]: End program error score: 0.006772087136072298
8.825 * [regime-testing]: Target error score: 0.0007500937617202151