Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:39:07 2013 Optimize a model with 803 rows, 53363 columns and 106653 nonzeros Presolve time: 0.08s Presolved: 803 rows, 53363 columns, 106653 nonzeros Variable types: 53290 continuous, 73 integer (73 binary) Root relaxation: objective 9.145419e+04, 2282 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 91454.1922 0 12 - 91454.1922 - - 0s H 0 0 95198.000000 91454.1922 3.93% - 0s 0 0 92506.8839 0 8 95198.0000 92506.8839 2.83% - 0s 0 0 92545.8805 0 8 95198.0000 92545.8805 2.79% - 0s 0 0 92559.6365 0 9 95198.0000 92559.6365 2.77% - 0s 0 0 92563.2161 0 10 95198.0000 92563.2161 2.77% - 0s 0 0 92565.5470 0 8 95198.0000 92565.5470 2.77% - 0s 0 0 92566.1012 0 8 95198.0000 92566.1012 2.76% - 1s H 0 0 92831.000000 92566.1012 0.29% - 1s H 0 0 92747.000000 92566.1012 0.20% - 1s 0 0 92566.1012 0 11 92747.0000 92566.1012 0.20% - 1s 0 0 92566.1012 0 7 92747.0000 92566.1012 0.20% - 1s 0 0 92566.1012 0 7 92747.0000 92566.1012 0.20% - 1s 0 0 92566.1012 0 11 92747.0000 92566.1012 0.20% - 1s 0 0 92566.1012 0 7 92747.0000 92566.1012 0.20% - 1s 0 0 92566.6122 0 6 92747.0000 92566.6122 0.19% - 1s 0 0 92567.5349 0 6 92747.0000 92567.5349 0.19% - 1s 0 0 92568.0997 0 7 92747.0000 92568.0997 0.19% - 2s 0 0 92568.8042 0 9 92747.0000 92568.8042 0.19% - 2s 0 2 92570.9130 0 9 92747.0000 92570.9130 0.19% - 2s * 8 5 6 92728.000000 92675.5218 0.06% 73.8 2s Cutting planes: Implied bound: 171 Flow cover: 19 Explored 18 nodes (6534 simplex iterations) in 2.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.272800000000e+04, best bound 9.272621112417e+04, gap 0.0019%