7.957 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.016 * * * [progress]: [2/2] Setting up program.
0.018 * [progress]: [Phase 2 of 3] Improving.
0.018 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (* a a) (* b b))
0.019 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.020 * * [simplify]: iteration  1 :  11  enodes  (cost  7 )
0.021 * * [simplify]: iteration  2 :  18  enodes  (cost  7 )
0.023 * * [simplify]: iteration  3 :  35  enodes  (cost  7 )
0.028 * * [simplify]: iteration  4 :  66  enodes  (cost  7 )
0.037 * * [simplify]: iteration  5 :  123  enodes  (cost  7 )
0.060 * * [simplify]: iteration  6 :  227  enodes  (cost  7 )
0.097 * * [simplify]: iteration  7 :  449  enodes  (cost  7 )
0.324 * * [simplify]: iteration  8 :  1906  enodes  (cost  7 )
4.196 * * [simplify]: iteration  done :  5000  enodes  (cost  7 )
4.196 * [simplify]: Simplified to:
   (* (- a b) (+ a b))
4.199 * * [progress]: iteration 1 / 4
4.199 * * * [progress]: picking best candidate
4.200 * * * * [pick]: Picked  #<alt (λ (a b) (* (- a b) (+ a b)))>
4.200 * * * [progress]: localizing error
4.204 * * * [progress]: generating rewritten candidates
4.204 * * * [progress]: generating series expansions
4.204 * * * [progress]: simplifying candidates
4.204 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
4.205 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
4.205 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
4.205 * [simplify]: Simplified to:
   
4.205 * * * [progress]: adding candidates to table
4.205 * [progress]: [Phase 3 of 3] Extracting.
4.207 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (- a b) (+ a b))
4.207 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
4.207 * * [simplify]: iteration  1 :  7  enodes  (cost  7 )
4.207 * * [simplify]: iteration  done :  7  enodes  (cost  7 )
4.207 * [simplify]: Simplified to:
   (* (- a b) (+ a b))
4.739 * [regime-testing]: End program error score: 0.0010001250156269534
4.755 * [regime-testing]: Target error score: 0.0010001250156269534