Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:38:31 2012 Optimize a model with 1836 rows, 4692 columns and 9928 nonzeros Presolve removed 31 rows and 2108 columns Presolve time: 0.05s Presolved: 1805 rows, 2584 columns, 7820 nonzeros Variable types: 0 continuous, 2584 integer (2584 binary) Found heuristic solution: objective 13.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 1514 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 (1514 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%