Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:19:35 2013 Optimize a model with 858 rows, 60918 columns and 121758 nonzeros Presolve time: 0.09s Presolved: 858 rows, 60918 columns, 121758 nonzeros Variable types: 60840 continuous, 78 integer (78 binary) Root relaxation: objective 8.975127e+04, 2155 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 89751.2682 0 7 - 89751.2682 - - 0s H 0 0 93771.000000 89751.2682 4.29% - 0s H 0 0 91356.000000 89751.2682 1.76% - 0s 0 0 90390.0428 0 4 91356.0000 90390.0428 1.06% - 0s 0 0 90404.4646 0 6 91356.0000 90404.4646 1.04% - 0s 0 0 90417.1742 0 5 91356.0000 90417.1742 1.03% - 0s 0 0 90423.6354 0 7 91356.0000 90423.6354 1.02% - 0s 0 0 90425.2898 0 3 91356.0000 90425.2898 1.02% - 0s 0 0 90425.2898 0 3 91356.0000 90425.2898 1.02% - 1s 0 0 90425.8145 0 4 91356.0000 90425.8145 1.02% - 1s 0 0 90425.8844 0 4 91356.0000 90425.8844 1.02% - 1s H 0 0 90580.000000 90425.8844 0.17% - 1s 0 0 90425.8844 0 7 90580.0000 90425.8844 0.17% - 1s 0 0 90425.8844 0 4 90580.0000 90425.8844 0.17% - 1s 0 0 90425.8844 0 6 90580.0000 90425.8844 0.17% - 1s 0 0 90425.8844 0 5 90580.0000 90425.8844 0.17% - 1s 0 0 90425.8844 0 6 90580.0000 90425.8844 0.17% - 1s 0 0 90425.8844 0 3 90580.0000 90425.8844 0.17% - 2s 0 0 90425.8844 0 5 90580.0000 90425.8844 0.17% - 2s 0 0 90425.9024 0 4 90580.0000 90425.9024 0.17% - 2s 0 0 90425.9024 0 4 90580.0000 90425.9024 0.17% - 2s 0 2 90428.4547 0 4 90580.0000 90428.4547 0.17% - 2s Cutting planes: Implied bound: 115 Flow cover: 10 Explored 6 nodes (5253 simplex iterations) in 2.62 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.058000000000e+04, best bound 9.058000000000e+04, gap 0.0%