0.127 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.025 * * * [progress]: [2/2] Setting up program.
0.027 * [progress]: [Phase 2 of 3] Improving.
0.027 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (+ (- (* x y) (* y y)) (* y y)) (* y z))
0.028 * * [simplify]: iteration  0 :  9  enodes  (cost  15 )
0.030 * * [simplify]: iteration  1 :  22  enodes  (cost  13 )
0.033 * * [simplify]: iteration  2 :  67  enodes  (cost  9 )
0.044 * * [simplify]: iteration  3 :  161  enodes  (cost  7 )
0.097 * * [simplify]: iteration  4 :  593  enodes  (cost  5 )