80.301 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.044 * * * [progress]: [2/2] Setting up program.
0.047 * [progress]: [Phase 2 of 3] Improving.
0.047 * [simplify]: Simplifying:
  (- (* a a) (* b b))
0.047 * * [simplify]: Extracting # 0 : cost  0
0.047 * * [simplify]: Extracting # 1 : cost  0
0.047 * * [simplify]: Extracting # 2 : cost  0
0.047 * * [simplify]: Extracting # 3 : cost  0
0.047 * * [simplify]: Extracting # 4 : cost  0
0.047 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.049 * * [simplify]: Extracting # 0 : cost  0
0.049 * * [simplify]: Extracting # 1 : cost  0
0.049 * * [simplify]: Extracting # 2 : cost  0
0.049 * * [simplify]: iteration  1 :  10  enodes  (cost  7 )
0.053 * * [simplify]: Extracting # 0 : cost  0
0.053 * * [simplify]: Extracting # 1 : cost  0
0.053 * * [simplify]: Extracting # 2 : cost  0
0.053 * * [simplify]: iteration  2 :  17  enodes  (cost  7 )
0.059 * * [simplify]: Extracting # 0 : cost  0
0.059 * * [simplify]: Extracting # 1 : cost  0
0.059 * * [simplify]: Extracting # 2 : cost  0
0.059 * * [simplify]: iteration  3 :  32  enodes  (cost  7 )
0.066 * * [simplify]: Extracting # 0 : cost  0
0.066 * * [simplify]: Extracting # 1 : cost  0
0.066 * * [simplify]: Extracting # 2 : cost  0
0.066 * * [simplify]: iteration  4 :  58  enodes  (cost  7 )
0.081 * * [simplify]: Extracting # 0 : cost  0
0.082 * * [simplify]: Extracting # 1 : cost  0
0.082 * * [simplify]: Extracting # 2 : cost  0
0.082 * * [simplify]: iteration  5 :  129  enodes  (cost  7 )
0.148 * * [simplify]: Extracting # 0 : cost  0
0.149 * * [simplify]: Extracting # 1 : cost  0
0.149 * * [simplify]: Extracting # 2 : cost  0
0.149 * * [simplify]: Extracting # 3 : cost  0
0.149 * * [simplify]: iteration  6 :  187  enodes  (cost  7 )
0.249 * * [simplify]: Extracting # 0 : cost  0
0.249 * * [simplify]: Extracting # 1 : cost  0
0.250 * * [simplify]: Extracting # 2 : cost  0
0.250 * * [simplify]: Extracting # 3 : cost  0
0.251 * * [simplify]: iteration  7 :  369  enodes  (cost  7 )
0.927 * * [simplify]: Extracting # 0 : cost  0
0.929 * * [simplify]: Extracting # 1 : cost  0
0.930 * * [simplify]: Extracting # 2 : cost  0
0.932 * * [simplify]: Extracting # 3 : cost  0
0.933 * * [simplify]: Extracting # 4 : cost  0
0.934 * * [simplify]: iteration  8 :  1551  enodes  (cost  7 )
13.253 * * [simplify]: Extracting # 0 : cost  0
13.263 * * [simplify]: Extracting # 1 : cost  0
13.266 * * [simplify]: Extracting # 2 : cost  0
13.271 * * [simplify]: Extracting # 3 : cost  0
13.274 * * [simplify]: Extracting # 4 : cost  0
13.276 * * [simplify]: iteration done:  5000  enodes  (cost  7 )
13.276 * [simplify]: Simplified to:
  (* (- a b) (+ a b))
13.279 * * [progress]: iteration 1 / 4
13.279 * * * [progress]: picking best candidate
13.280 * * * * [pick]: Picked  #<alt (λ (a b) (- (* a a) (* b b)))>
13.280 * * * [progress]: localizing error
13.285 * * * [progress]: generating rewritten candidates
13.285 * * * [progress]: generating series expansions
13.285 * * * [progress]: simplifying candidates
13.285 * [simplify]: Simplifying:
  
13.285 * * [simplify]: Extracting # 0 : cost  0
13.285 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
13.286 * * [simplify]: Extracting # 0 : cost  0
13.286 * * [simplify]: iteration done:  0  enodes  (cost  0 )
13.286 * [simplify]: Simplified to:
  
13.286 * * * [progress]: adding candidates to table
13.286 * [progress]: [Phase 3 of 3] Extracting.
13.287 * [simplify]: Simplifying:
  (- (* a a) (* b b))
13.287 * * [simplify]: Extracting # 0 : cost  0
13.287 * * [simplify]: Extracting # 1 : cost  0
13.287 * * [simplify]: Extracting # 2 : cost  0
13.287 * * [simplify]: Extracting # 3 : cost  0
13.287 * * [simplify]: Extracting # 4 : cost  0
13.287 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
13.287 * * [simplify]: Extracting # 0 : cost  0
13.288 * * [simplify]: iteration done:  5  enodes  (cost  7 )
13.288 * [simplify]: Simplified to:
  (- (* a a) (* b b))
14.327 * [regime-testing]: End program error score: 0.006500812601575197
14.344 * [regime-testing]: Target error score: 0.0011251406425803225