Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:41:02 2012 Optimize a model with 3828 rows, 7656 columns and 18792 nonzeros Presolve removed 208 rows and 2958 columns Presolve time: 0.12s Presolved: 3620 rows, 4698 columns, 15399 nonzeros Variable types: 0 continuous, 4698 integer (4698 binary) Found heuristic solution: objective 23.0000000 Root relaxation: objective 3.000000e+00, 4425 iterations, 0.10 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 (4425 simplex iterations) in 0.23 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%