0.474 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.026 * * * [progress]: [2/2] Setting up program.
0.028 * [progress]: [Phase 2 of 3] Improving.
0.028 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (- (+ (* x y) (* y y)) (* y z)) (* y y))
0.029 * * [simplify]: iteration  0 :  9  enodes  (cost  15 )
0.030 * * [simplify]: iteration  1 :  23  enodes  (cost  13 )
0.034 * * [simplify]: iteration  2 :  73  enodes  (cost  11 )
0.045 * * [simplify]: iteration  3 :  195  enodes  (cost  9 )
0.081 * * [simplify]: iteration  4 :  407  enodes  (cost  7 )