Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:08:07 2013 Optimize a model with 748 rows, 46308 columns and 92548 nonzeros Presolve time: 0.07s Presolved: 748 rows, 46308 columns, 92548 nonzeros Variable types: 46240 continuous, 68 integer (68 binary) Root relaxation: objective 8.910518e+04, 2327 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 89105.1819 0 9 - 89105.1819 - - 0s H 0 0 91575.000000 89105.1819 2.70% - 0s H 0 0 89545.000000 89105.1819 0.49% - 0s 0 0 89304.6906 0 6 89545.0000 89304.6906 0.27% - 0s 0 0 89304.6906 0 9 89545.0000 89304.6906 0.27% - 0s 0 0 89305.5154 0 6 89545.0000 89305.5154 0.27% - 0s 0 0 89312.3926 0 6 89545.0000 89312.3926 0.26% - 0s 0 0 89314.4668 0 5 89545.0000 89314.4668 0.26% - 0s 0 0 89318.2981 0 7 89545.0000 89318.2981 0.25% - 0s 0 0 89318.8276 0 5 89545.0000 89318.8276 0.25% - 0s 0 0 89322.1513 0 5 89545.0000 89322.1513 0.25% - 0s 0 0 89322.3052 0 5 89545.0000 89322.3052 0.25% - 1s 0 0 89324.8585 0 5 89545.0000 89324.8585 0.25% - 1s 0 0 89324.8585 0 5 89545.0000 89324.8585 0.25% - 1s 0 0 89324.8585 0 5 89545.0000 89324.8585 0.25% - 1s 0 0 89325.7742 0 5 89545.0000 89325.7742 0.24% - 1s 0 0 89331.5647 0 4 89545.0000 89331.5647 0.24% - 1s H 0 0 89497.000000 89331.5647 0.18% - 1s 0 2 89341.5058 0 4 89497.0000 89341.5058 0.17% - 1s Cutting planes: Implied bound: 127 Flow cover: 3 Explored 9 nodes (5275 simplex iterations) in 1.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.949700000000e+04, best bound 8.949700000000e+04, gap 0.0%