0.230 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.020 * * * [progress]: [2/2] Setting up program.
0.023 * [progress]: [Phase 2 of 3] Improving.
0.023 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (+ x (/ (* y (- z t)) (- z a)))
0.024 * * [simplify]: iteration  0 :  10  enodes  (cost  11 )
0.025 * * [simplify]: iteration  1 :  18  enodes  (cost  11 )
0.027 * * [simplify]: iteration  2 :  33  enodes  (cost  11 )
0.031 * * [simplify]: iteration  3 :  58  enodes  (cost  11 )
0.038 * * [simplify]: iteration  4 :  92  enodes  (cost  11 )
0.050 * * [simplify]: iteration  5 :  134  enodes  (cost  11 )
0.073 * * [simplify]: iteration  6 :  165  enodes  (cost  11 )
0.098 * * [simplify]: iteration  7 :  190  enodes  (cost  11 )
0.130 * * [simplify]: iteration  8 :  234  enodes  (cost  11 )
0.167 * * [simplify]: iteration  9 :  300  enodes  (cost  11 )