Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:37:55 2012 Optimize a model with 1525 rows, 3782 columns and 8113 nonzeros Presolve removed 31 rows and 1891 columns Presolve time: 0.03s Presolved: 1494 rows, 1891 columns, 6222 nonzeros Variable types: 0 continuous, 1891 integer (1891 binary) Found heuristic solution: objective 14.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 1077 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 (1077 simplex iterations) in 0.05 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%