Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:18:29 2013 Optimize a model with 900 rows, 25350 columns and 50950 nonzeros Presolve removed 150 rows and 100 columns Presolve time: 0.13s Presolved: 750 rows, 25250 columns, 50550 nonzeros Variable types: 25200 continuous, 50 integer (50 binary) Root relaxation: objective 1.626233e+05, 1722 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 162623.326 0 5 - 162623.326 - - 0s H 0 0 173948.67734 162623.326 6.51% - 0s 0 0 162694.650 0 5 173948.677 162694.650 6.47% - 0s H 0 0 163537.80026 162694.650 0.52% - 0s 0 0 162717.466 0 6 163537.800 162717.466 0.50% - 0s 0 0 162723.703 0 5 163537.800 162723.703 0.50% - 0s 0 0 162728.253 0 4 163537.800 162728.253 0.50% - 0s 0 0 162728.414 0 4 163537.800 162728.414 0.49% - 0s 0 0 162728.646 0 4 163537.800 162728.646 0.49% - 0s 0 0 162729.035 0 4 163537.800 162729.035 0.49% - 0s 0 0 162729.072 0 4 163537.800 162729.072 0.49% - 0s 0 0 162729.630 0 4 163537.800 162729.630 0.49% - 0s 0 0 162733.306 0 4 163537.800 162733.306 0.49% - 0s 0 0 162734.747 0 4 163537.800 162734.747 0.49% - 0s 0 0 162734.747 0 4 163537.800 162734.747 0.49% - 0s 0 0 162734.747 0 4 163537.800 162734.747 0.49% - 1s 0 0 162734.747 0 4 163537.800 162734.747 0.49% - 1s 0 2 162736.408 0 4 163537.800 162736.408 0.49% - 1s * 11 4 10 162910.04610 162863.281 0.03% 33.6 1s * 14 1 11 162887.15892 162869.254 0.01% 27.4 1s Cutting planes: Flow cover: 18 Explored 16 nodes (2596 simplex iterations) in 1.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.628871589165e+05, best bound 1.628871589165e+05, gap 0.0%