Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:21:25 2012 Optimize a model with 6271 rows, 4160 columns and 22654 nonzeros Presolve removed 1096 rows and 386 columns Presolve time: 0.20s Presolved: 5175 rows, 3774 columns, 19420 nonzeros Variable types: 0 continuous, 3774 integer (3774 binary) Found heuristic solution: objective 64.0000000 Root relaxation: objective 3.000000e+00, 3985 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% - 0s Explored 0 nodes (6061 simplex iterations) in 0.62 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%