1.378 * [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> :
   (* (+ x y) (- x y))
0.019 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.020 * * [simplify]: iteration  1 :  9  enodes  (cost  7 )
0.021 * * [simplify]: iteration  2 :  24  enodes  (cost  7 )
0.024 * * [simplify]: iteration  3 :  53  enodes  (cost  7 )
0.031 * * [simplify]: iteration  4 :  96  enodes  (cost  7 )
0.050 * * [simplify]: iteration  5 :  155  enodes  (cost  7 )
0.076 * * [simplify]: iteration  6 :  220  enodes  (cost  7 )
0.119 * * [simplify]: iteration  7 :  332  enodes  (cost  7 )
0.202 * * [simplify]: iteration  8 :  1001  enodes  (cost  7 )