Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:38:57 2012 Optimize a model with 2160 rows, 5256 columns and 11448 nonzeros Presolve removed 33 rows and 2376 columns Presolve time: 0.06s Presolved: 2127 rows, 2880 columns, 9072 nonzeros Variable types: 0 continuous, 2880 integer (2880 binary) Found heuristic solution: objective 16.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 1533 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 2.00000 1.00000 50.0% - 0s Explored 0 nodes (1533 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%