0.690 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.020 * * * [progress]: [2/2] Setting up program.
0.022 * [progress]: [Phase 2 of 3] Improving.
0.022 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (+ (* (/ x y) (- z t)) t)
0.023 * * [simplify]: iteration  0 :  8  enodes  (cost  9 )
0.024 * * [simplify]: iteration  1 :  15  enodes  (cost  8 )
0.030 * * [simplify]: iteration  2 :  32  enodes  (cost  8 )
0.034 * * [simplify]: iteration  3 :  55  enodes  (cost  8 )
0.041 * * [simplify]: iteration  4 :  87  enodes  (cost  8 )
0.052 * * [simplify]: iteration  5 :  122  enodes  (cost  8 )
0.067 * * [simplify]: iteration  6 :  155  enodes  (cost  8 )
0.086 * * [simplify]: iteration  7 :  193  enodes  (cost  8 )
0.116 * * [simplify]: iteration  8 :  302  enodes  (cost  8 )
0.160 * * [simplify]: iteration  9 :  397  enodes  (cost  8 )