18.051 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.012 * * * [progress]: [2/2] Setting up program.
0.013 * [progress]: [Phase 2 of 3] Improving.
0.014 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (+ x y) (* x y))
0.015 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.015 * * [simplify]: iteration  1 :  11  enodes  (cost  7 )
0.017 * * [simplify]: iteration  2 :  24  enodes  (cost  7 )
0.020 * * [simplify]: iteration  3 :  39  enodes  (cost  7 )
0.025 * * [simplify]: iteration  4 :  62  enodes  (cost  7 )
0.031 * * [simplify]: iteration  5 :  88  enodes  (cost  6 )