0.328 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.022 * * * [progress]: [2/2] Setting up program.
0.024 * [progress]: [Phase 2 of 3] Improving.
0.024 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (+ (/ (* 60.0 (- x y)) (- z t)) (* a 120.0))
0.025 * * [simplify]: iteration  0 :  13  enodes  (cost  13 )
0.027 * * [simplify]: iteration  1 :  22  enodes  (cost  13 )
0.029 * * [simplify]: iteration  2 :  37  enodes  (cost  13 )
0.034 * * [simplify]: iteration  3 :  62  enodes  (cost  13 )
0.046 * * [simplify]: iteration  4 :  98  enodes  (cost  13 )
0.059 * * [simplify]: iteration  5 :  140  enodes  (cost  13 )
0.080 * * [simplify]: iteration  6 :  177  enodes  (cost  13 )
0.109 * * [simplify]: iteration  7 :  209  enodes  (cost  13 )