Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:23:32 2012 Optimize a model with 8315 rows, 4422 columns and 29038 nonzeros Presolve removed 1058 rows and 2 columns Presolve time: 0.27s Presolved: 7323 rows, 4420 columns, 30600 nonzeros Variable types: 0 continuous, 4420 integer (4420 binary) Found heuristic solution: objective 66.0000000 Root relaxation: objective 3.000000e+00, 5502 iterations, 0.69 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 4s Explored 0 nodes (32156 simplex iterations) in 4.92 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%