23.252 * [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 :  10  enodes  (cost  7 )
0.021 * * [simplify]: iteration  2 :  17  enodes  (cost  7 )
0.023 * * [simplify]: iteration  3 :  32  enodes  (cost  7 )
0.027 * * [simplify]: iteration  4 :  57  enodes  (cost  7 )
0.035 * * [simplify]: iteration  5 :  98  enodes  (cost  7 )
0.054 * * [simplify]: iteration  6 :  163  enodes  (cost  7 )
0.087 * * [simplify]: iteration  7 :  331  enodes  (cost  7 )
0.193 * * [simplify]: iteration  8 :  1632  enodes  (cost  7 )
0.859 * * [simplify]: iteration  done :  5001  enodes  (cost  7 )
0.859 * [simplify]: Simplified to:
   (* (- a b) (+ a b))
0.862 * * [progress]: iteration 1 / 4
0.862 * * * [progress]: picking best candidate
0.863 * * * * [pick]: Picked  #<alt (λ (a b) (* (- a b) (+ a b)))>
0.863 * * * [progress]: localizing error
0.867 * * * [progress]: generating rewritten candidates
0.867 * * * [progress]: generating series expansions
0.867 * * * [progress]: simplifying candidates
0.868 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
0.868 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.868 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
0.869 * [simplify]: Simplified to:
   
0.869 * * * [progress]: adding candidates to table
0.869 * [progress]: [Phase 3 of 3] Extracting.
0.870 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (- a b) (+ a b))
0.870 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.871 * * [simplify]: iteration  1 :  7  enodes  (cost  7 )
0.871 * * [simplify]: iteration  done :  7  enodes  (cost  7 )
0.871 * [simplify]: Simplified to:
   (* (- a b) (+ a b))
1.380 * [regime-testing]: End program error score: 0.0008751093886735842
1.398 * [regime-testing]: Target error score: 0.0008751093886735842