Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:35:06 2012 Optimize a model with 13600 rows, 18632 columns and 58888 nonzeros Presolve removed 301 rows and 3944 columns Presolve time: 0.27s Presolved: 13299 rows, 14688 columns, 54264 nonzeros Variable types: 0 continuous, 14688 integer (14688 binary) Found heuristic solution: objective 43.0000000 Root relaxation: objective 3.000000e+00, 13767 iterations, 0.84 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% - 2s Explored 0 nodes (21451 simplex iterations) in 2.35 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%