Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:21:05 2012 Optimize a model with 6208 rows, 4160 columns and 22528 nonzeros Presolve removed 1094 rows and 384 columns Presolve time: 0.15s Presolved: 5114 rows, 3776 columns, 19456 nonzeros Variable types: 0 continuous, 3776 integer (3776 binary) Found heuristic solution: objective 35.0000000 Root relaxation: objective 3.000000e+00, 5253 iterations, 0.41 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% - 0s Explored 0 nodes (7549 simplex iterations) in 0.81 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%