Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:22:29 2012 Optimize a model with 6239 rows, 4290 columns and 22683 nonzeros Presolve removed 132 rows and 2 columns Presolve time: 0.19s Presolved: 6172 rows, 4288 columns, 26395 nonzeros Variable types: 0 continuous, 4288 integer (4288 binary) Found heuristic solution: objective 65.0000000 Root relaxation: objective 3.000000e+00, 4185 iterations, 0.29 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% - 1s Explored 0 nodes (11304 simplex iterations) in 1.31 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%