4.403 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.023 * * * [progress]: [2/2] Setting up program.
0.025 * [progress]: [Phase 2 of 3] Improving.
0.025 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (/ x (* (- y z) (- t z)))
0.026 * * [simplify]: iteration  0 :  8  enodes  (cost  9 )
0.027 * * [simplify]: iteration  1 :  14  enodes  (cost  9 )
0.028 * * [simplify]: iteration  2 :  30  enodes  (cost  9 )
0.032 * * [simplify]: iteration  3 :  64  enodes  (cost  9 )
0.041 * * [simplify]: iteration  4 :  129  enodes  (cost  9 )
0.063 * * [simplify]: iteration  5 :  213  enodes  (cost  9 )
0.106 * * [simplify]: iteration  6 :  337  enodes  (cost  9 )
0.183 * * [simplify]: iteration  7 :  532  enodes  (cost  9 )
0.317 * * [simplify]: iteration  8 :  817  enodes  (cost  9 )