0.216 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.018 * * * [progress]: [2/2] Setting up program.
0.024 * [progress]: [Phase 2 of 3] Improving.
0.025 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (+ x (/ (* y (- z t)) (- a t)))
0.025 * * [simplify]: iteration  0 :  10  enodes  (cost  11 )
0.027 * * [simplify]: iteration  1 :  17  enodes  (cost  11 )
0.029 * * [simplify]: iteration  2 :  32  enodes  (cost  11 )
0.033 * * [simplify]: iteration  3 :  57  enodes  (cost  11 )
0.040 * * [simplify]: iteration  4 :  91  enodes  (cost  11 )
0.052 * * [simplify]: iteration  5 :  131  enodes  (cost  11 )
0.073 * * [simplify]: iteration  6 :  164  enodes  (cost  11 )
0.098 * * [simplify]: iteration  7 :  190  enodes  (cost  11 )
0.129 * * [simplify]: iteration  8 :  233  enodes  (cost  11 )
0.164 * * [simplify]: iteration  9 :  300  enodes  (cost  11 )