12.760 * [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 :  69  enodes  (cost  7 )
0.038 * * [simplify]: iteration  5 :  126  enodes  (cost  7 )
0.060 * * [simplify]: iteration  6 :  236  enodes  (cost  7 )
0.102 * * [simplify]: iteration  7 :  458  enodes  (cost  7 )
0.230 * * [simplify]: iteration  8 :  1989  enodes  (cost  7 )
1.038 * * [simplify]: iteration  done :  5000  enodes  (cost  7 )
1.038 * [simplify]: Simplified to:
   (* (- a b) (+ a b))
1.041 * * [progress]: iteration 1 / 4
1.041 * * * [progress]: picking best candidate
1.042 * * * * [pick]: Picked  #<alt (λ (a b) (* (- a b) (+ a b)))>
1.042 * * * [progress]: localizing error
1.046 * * * [progress]: generating rewritten candidates
1.046 * * * [progress]: generating series expansions
1.046 * * * [progress]: simplifying candidates
1.046 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
1.047 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
1.047 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
1.047 * [simplify]: Simplified to:
   
1.047 * * * [progress]: adding candidates to table
1.047 * [progress]: [Phase 3 of 3] Extracting.
1.048 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (- a b) (+ a b))
1.049 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
1.049 * * [simplify]: iteration  1 :  7  enodes  (cost  7 )
1.049 * * [simplify]: iteration  done :  7  enodes  (cost  7 )
1.049 * [simplify]: Simplified to:
   (* (- a b) (+ a b))
1.572 * [regime-testing]: End program error score: 0.0008751093886735842
1.590 * [regime-testing]: Target error score: 0.0008751093886735842