Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:15:39 2013 Optimize a model with 987 rows, 324 columns and 3078 nonzeros Presolve removed 257 rows and 169 columns Presolve time: 0.00s Presolved: 730 rows, 155 columns, 2309 nonzeros Variable types: 8 continuous, 147 integer (147 binary) Found heuristic solution: objective 8359.0000000 Root relaxation: objective 6.474767e+03, 11 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 6474.76744 0 5 8359.00000 6474.76744 22.5% - 0s 0 0 6477.30543 0 11 8359.00000 6477.30543 22.5% - 0s H 0 0 6534.0000000 6477.30543 0.87% - 0s 0 0 6478.92621 0 10 6534.00000 6478.92621 0.84% - 0s H 0 0 6500.0000000 6478.92621 0.32% - 0s H 0 0 6488.0000000 6478.92621 0.14% - 0s 0 0 6481.89400 0 15 6488.00000 6481.89400 0.09% - 0s 0 0 6481.89400 0 5 6488.00000 6481.89400 0.09% - 0s 0 0 6481.89400 0 15 6488.00000 6481.89400 0.09% - 0s 0 0 6482.27185 0 15 6488.00000 6482.27185 0.09% - 0s 0 0 6483.12158 0 19 6488.00000 6483.12158 0.08% - 0s 0 0 6483.75185 0 17 6488.00000 6483.75185 0.07% - 0s 0 0 6483.80306 0 15 6488.00000 6483.80306 0.06% - 0s 0 0 6485.16503 0 10 6488.00000 6485.16503 0.04% - 0s 0 0 6485.16682 0 10 6488.00000 6485.16682 0.04% - 0s 0 0 6485.17306 0 9 6488.00000 6485.17306 0.04% - 0s 0 2 6485.37288 0 9 6488.00000 6485.37288 0.04% - 0s Cutting planes: Gomory: 1 Cover: 2 Implied bound: 1 Clique: 2 MIR: 10 Explored 3 nodes (147 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.488000000000e+03, best bound 6.488000000000e+03, gap 0.0%