20.923 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.025 * * * [progress]: [2/2] Setting up program.
0.028 * [progress]: [Phase 2 of 3] Improving.
0.028 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (/ (+ (* x y) (* z (- t a))) (+ y (* z (- b y))))
0.029 * * [simplify]: iteration  0 :  14  enodes  (cost  17 )
0.031 * * [simplify]: iteration  1 :  23  enodes  (cost  17 )
0.034 * * [simplify]: iteration  2 :  37  enodes  (cost  17 )
0.038 * * [simplify]: iteration  3 :  57  enodes  (cost  17 )
0.045 * * [simplify]: iteration  4 :  74  enodes  (cost  17 )
0.055 * * [simplify]: iteration  5 :  86  enodes  (cost  17 )
0.067 * * [simplify]: iteration  6 :  110  enodes  (cost  17 )
0.084 * * [simplify]: iteration  7 :  179  enodes  (cost  17 )
0.109 * * [simplify]: iteration  8 :  335  enodes  (cost  17 )
0.166 * * [simplify]: iteration  9 :  644  enodes  (cost  17 )