Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:16:48 2012 Optimize a model with 4647 rows, 3192 columns and 16854 nonzeros Presolve removed 450 rows and 2 columns Presolve time: 0.10s Presolved: 4253 rows, 3190 columns, 18720 nonzeros Variable types: 0 continuous, 3190 integer (3190 binary) Found heuristic solution: objective 56.0000000 Root relaxation: objective 3.000000e+00, 3182 iterations, 0.18 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 (8624 simplex iterations) in 0.67 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%