Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:41:00 2012 Optimize a model with 2958 rows, 7656 columns and 16182 nonzeros Presolve removed 43 rows and 3741 columns Presolve time: 0.09s Presolved: 2915 rows, 3915 columns, 12441 nonzeros Variable types: 0 continuous, 3915 integer (3915 binary) Found heuristic solution: objective 15.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 2650 iterations, 0.04 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 (2650 simplex iterations) in 0.13 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%