Gurobi 5.0.1 (linux64) logging started Mon Feb 4 17:43:53 2013 Optimize a model with 7175 rows, 1225 columns and 22050 nonzeros Presolve removed 1408 rows and 641 columns Presolve time: 0.06s Presolved: 5767 rows, 584 columns, 17812 nonzeros Variable types: 16 continuous, 568 integer (568 binary) Found heuristic solution: objective 16823.000000 Root relaxation: objective 1.305527e+04, 2142 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13055.2667 0 9 16823.0000 13055.2667 22.4% - 0s H 0 0 13072.000000 13055.2667 0.13% - 0s H 0 0 13065.000000 13055.2667 0.07% - 0s H 0 0 13064.000000 13055.2667 0.07% - 0s 0 0 13055.2667 0 15 13064.0000 13055.2667 0.07% - 0s 0 0 13055.2667 0 11 13064.0000 13055.2667 0.07% - 0s 0 0 13055.3333 0 21 13064.0000 13055.3333 0.07% - 0s 0 0 13055.8262 0 21 13064.0000 13055.8262 0.06% - 0s 0 0 13055.9783 0 33 13064.0000 13055.9783 0.06% - 0s 0 0 13056.2782 0 37 13064.0000 13056.2782 0.06% - 0s 0 0 13056.4871 0 35 13064.0000 13056.4871 0.06% - 0s H 0 0 13063.000000 13056.4871 0.05% - 0s 0 0 13056.6226 0 40 13063.0000 13056.6226 0.05% - 0s 0 0 13056.7376 0 39 13063.0000 13056.7376 0.05% - 0s 0 0 13056.7461 0 41 13063.0000 13056.7461 0.05% - 0s 0 0 13056.7478 0 40 13063.0000 13056.7478 0.05% - 0s 0 0 13056.8009 0 40 13063.0000 13056.8009 0.05% - 0s 0 0 13056.8009 0 39 13063.0000 13056.8009 0.05% - 0s H 0 0 13059.000000 13056.8009 0.02% - 0s 0 2 13056.8517 0 38 13059.0000 13056.8517 0.02% - 0s Cutting planes: Gomory: 1 Cover: 1 MIR: 24 Zero half: 2 Mod-K: 4 Explored 27 nodes (3115 simplex iterations) in 0.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.305900000000e+04, best bound 1.305800000000e+04, gap 0.0077%