Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:02:05 2012 Optimize a model with 8249 rows, 12882 columns and 37177 nonzeros Presolve removed 26 rows and 2938 columns Presolve time: 0.15s Presolved: 8223 rows, 9944 columns, 34239 nonzeros Variable types: 0 continuous, 9944 integer (9944 binary) Found heuristic solution: objective 34.0000000 Root relaxation: objective 2.000000e+00, 7741 iterations, 0.25 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 100 34.00000 2.00000 94.1% - 1s H 0 0 5.0000000 2.00000 60.0% - 1s H 0 0 4.0000000 2.00000 50.0% - 1s H 0 0 3.0000000 2.00000 33.3% - 1s 0 0 2.00000 0 100 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 188 3.00000 2.00000 33.3% - 2s 0 0 2.00000 0 100 3.00000 2.00000 33.3% - 5s 0 0 2.00000 0 188 3.00000 2.00000 33.3% - 8s 0 0 2.00000 0 227 3.00000 2.00000 33.3% - 11s 0 0 2.00000 0 100 3.00000 2.00000 33.3% - 12s 0 0 2.00000 0 190 3.00000 2.00000 33.3% - 15s 0 0 2.00000 0 190 3.00000 2.00000 33.3% - 17s 0 2 2.00000 0 190 3.00000 2.00000 33.3% - 22s 5 5 2.00000 1 195 3.00000 2.00000 33.3% 3251 30s Cutting planes: Gomory: 1 Zero half: 1 Explored 5 nodes (199298 simplex iterations) in 30.84 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%