Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:51:01 2012 Optimize a model with 5871 rows, 10712 columns and 27913 nonzeros Presolve removed 33 rows and 3399 columns Presolve time: 0.13s Presolved: 5838 rows, 7313 columns, 24514 nonzeros Variable types: 0 continuous, 7313 integer (7313 binary) Found heuristic solution: objective 29.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 4550 iterations, 0.08 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 (4550 simplex iterations) in 0.22 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%