Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:00:41 2013 Optimize a model with 176 rows, 516 columns and 14142 nonzeros Presolve removed 36 rows and 82 columns Presolve time: 0.08s Presolved: 140 rows, 434 columns, 11219 nonzeros Variable types: 0 continuous, 434 integer (434 binary) Found heuristic solution: objective 366.0000000 Found heuristic solution: objective 314.0000000 Root relaxation: objective 2.627500e+02, 59 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 262.75000 0 11 314.00000 262.75000 16.3% - 0s H 0 0 280.0000000 262.75000 6.16% - 0s * 0 0 0 264.0000000 264.00000 0.0% - 0s Cutting planes: Gomory: 1 Clique: 3 Zero half: 1 Explored 0 nodes (73 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.640000000000e+02, best bound 2.640000000000e+02, gap 0.0%