Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:15:54 2012 Optimize a model with 9984 rows, 16512 columns and 45952 nonzeros Presolve removed 36 rows and 4608 columns Presolve time: 0.19s Presolved: 9948 rows, 11904 columns, 41344 nonzeros Variable types: 0 continuous, 11904 integer (11904 binary) Found heuristic solution: objective 40.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 8182 iterations, 0.22 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 (8182 simplex iterations) in 0.43 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%