Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:43:39 2013 Optimize a model with 3303 rows, 729 columns and 10206 nonzeros Presolve removed 788 rows and 386 columns Presolve time: 0.02s Presolved: 2515 rows, 343 columns, 7781 nonzeros Variable types: 10 continuous, 333 integer (333 binary) Found heuristic solution: objective 19007.000000 Root relaxation: objective 1.566414e+04, 1470 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15664.1394 0 4 19007.0000 15664.1394 17.6% - 0s H 0 0 15667.000000 15664.1394 0.02% - 0s 0 0 15665.7020 0 7 15667.0000 15665.7020 0.01% - 0s Cutting planes: Gomory: 2 MIR: 4 Explored 0 nodes (1480 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.566700000000e+04, best bound 1.566600000000e+04, gap 0.0064%