Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:02:58 2012 Optimize a model with 8094 rows, 13110 columns and 36936 nonzeros Presolve removed 26 rows and 2964 columns Presolve time: 0.15s Presolved: 8068 rows, 10146 columns, 33972 nonzeros Variable types: 0 continuous, 10146 integer (10146 binary) Found heuristic solution: objective 33.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 6107 iterations, 0.11 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 (6107 simplex iterations) in 0.28 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%