Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:28:28 2012 Optimize a model with 9519 rows, 4970 columns and 33178 nonzeros Presolve removed 1332 rows and 2 columns Presolve time: 0.35s Presolved: 8257 rows, 4968 columns, 34624 nonzeros Variable types: 0 continuous, 4968 integer (4968 binary) Found heuristic solution: objective 70.0000000 Root relaxation: objective 3.000000e+00, 7320 iterations, 1.11 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 91 70.00000 3.00000 95.7% - 4s H 0 0 33.0000000 3.00000 90.9% - 4s H 0 0 9.0000000 3.00000 66.7% - 4s H 0 0 4.0000000 3.00000 25.0% - 4s 0 0 3.00000 0 101 4.00000 3.00000 25.0% - 5s H 0 0 3.0000000 3.00000 0.0% - 5s Cutting planes: Gomory: 2 Zero half: 9 Explored 0 nodes (21420 simplex iterations) in 5.61 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%