Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:34:42 2012 Optimize a model with 9393 rows, 15006 columns and 42576 nonzeros Presolve removed 40 rows and 4638 columns Presolve time: 0.16s Presolved: 9353 rows, 10368 columns, 37786 nonzeros Variable types: 0 continuous, 10368 integer (10368 binary) Found heuristic solution: objective 122.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 171 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 98 3.00000 2.00000 33.3% - 0s 0 0 infeasible 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (307 simplex iterations) in 0.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%