Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:47:35 2013 Optimize a model with 3682 rows, 784 columns and 11368 nonzeros Presolve removed 1488 rows and 448 columns Presolve time: 0.03s Presolved: 2194 rows, 336 columns, 6732 nonzeros Variable types: 6 continuous, 330 integer (330 binary) Found heuristic solution: objective 18804.000000 Root relaxation: objective 1.694721e+04, 531 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16947.2143 0 3 18804.0000 16947.2143 9.87% - 0s H 0 0 16954.000000 16947.2143 0.04% - 0s H 0 0 16953.000000 16947.2143 0.03% - 0s 0 0 16949.1818 0 6 16953.0000 16949.1818 0.02% - 0s 0 0 16949.1818 0 3 16953.0000 16949.1818 0.02% - 0s 0 0 16949.1818 0 6 16953.0000 16949.1818 0.02% - 0s 0 0 16950.6000 0 2 16953.0000 16950.6000 0.01% - 0s 0 0 16951.0000 0 3 16953.0000 16951.0000 0.01% - 0s 0 0 cutoff 0 16953.0000 16952.0170 0.01% - 0s Cutting planes: Gomory: 1 Cover: 2 Clique: 1 MIR: 4 Explored 0 nodes (568 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.695300000000e+04, best bound 1.695300000000e+04, gap 0.0%