Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:47:36 2013 Optimize a model with 3682 rows, 784 columns and 11368 nonzeros Presolve removed 542 rows and 395 columns Presolve time: 0.02s Presolved: 3140 rows, 389 columns, 9845 nonzeros Variable types: 17 continuous, 372 integer (372 binary) Found heuristic solution: objective 17770.000000 Root relaxation: objective 1.239215e+04, 2520 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 12392.1538 0 10 17770.0000 12392.1538 30.3% - 0s H 0 0 12409.000000 12392.1538 0.14% - 0s H 0 0 12400.000000 12392.1538 0.06% - 0s 0 0 12393.0000 0 13 12400.0000 12393.0000 0.06% - 0s 0 0 12393.0000 0 8 12400.0000 12393.0000 0.06% - 0s H 0 0 12399.000000 12393.0000 0.05% - 0s H 0 0 12398.000000 12393.0000 0.04% - 0s H 0 0 12396.000000 12393.0000 0.02% - 0s 0 0 12393.0000 0 13 12396.0000 12393.0000 0.02% - 0s 0 1 12393.0000 0 10 12396.0000 12393.0000 0.02% - 0s H 1 1 12394.000000 12393.0000 0.01% 31.0 0s Cutting planes: Gomory: 1 Cover: 2 Implied bound: 14 MIR: 4 Explored 1 nodes (2836 simplex iterations) in 0.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.239400000000e+04, best bound 1.239400000000e+04, gap 0.0%