Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:43:14 2012 Optimize a model with 5170 rows, 8930 columns and 24064 nonzeros Presolve removed 32 rows and 3008 columns Presolve time: 0.13s Presolved: 5138 rows, 5922 columns, 21056 nonzeros Variable types: 0 continuous, 5922 integer (5922 binary) Found heuristic solution: objective 34.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 4348 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 (4348 simplex iterations) in 0.25 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%