12.807 * [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 using  #<procedure:simplify-batch-regraph> :
   (- (* a a) (* b b))
0.020 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.021 * * [simplify]: iteration  1 :  10  enodes  (cost  7 )
0.022 * * [simplify]: iteration  2 :  17  enodes  (cost  7 )
0.024 * * [simplify]: iteration  3 :  32  enodes  (cost  7 )
0.029 * * [simplify]: iteration  4 :  57  enodes  (cost  7 )
0.039 * * [simplify]: iteration  5 :  98  enodes  (cost  7 )
0.062 * * [simplify]: iteration  6 :  156  enodes  (cost  7 )
0.107 * * [simplify]: iteration  7 :  324  enodes  (cost  7 )
0.654 * * [simplify]: iteration  8 :  1572  enodes  (cost  7 )
5.558 * * [simplify]: iteration  done :  5000  enodes  (cost  7 )
5.559 * [simplify]: Simplified to:
   (* (- a b) (+ a b))
5.561 * * [progress]: iteration 1 / 4
5.561 * * * [progress]: picking best candidate
5.562 * * * * [pick]: Picked  #<alt (λ (a b) (* (- a b) (+ a b)))>
5.562 * * * [progress]: localizing error
5.566 * * * [progress]: generating rewritten candidates
5.566 * * * [progress]: generating series expansions
5.566 * * * [progress]: simplifying candidates
5.566 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
5.567 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
5.567 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
5.567 * [simplify]: Simplified to:
   
5.567 * * * [progress]: adding candidates to table
5.567 * [progress]: [Phase 3 of 3] Extracting.
5.569 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (- a b) (+ a b))
5.569 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
5.569 * * [simplify]: iteration  1 :  7  enodes  (cost  7 )
5.569 * * [simplify]: iteration  done :  7  enodes  (cost  7 )
5.569 * [simplify]: Simplified to:
   (* (- a b) (+ a b))
6.098 * [regime-testing]: End program error score: 0.0007500937617202151
6.115 * [regime-testing]: Target error score: 0.0007500937617202151