Gurobi 5.0.1 (linux64) logging started Fri Nov 16 02:06:31 2012 Optimize a model with 7067 rows, 992 columns and 22039 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.09s Presolved: 7065 rows, 990 columns, 25424 nonzeros Variable types: 0 continuous, 990 integer (990 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 3.584699e+00, 7026 iterations, 0.48 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.58470 0 769 31.00000 3.58470 88.4% - 1s H 0 0 29.0000000 3.58470 87.6% - 1s 0 0 7.00000 0 90 29.00000 7.00000 75.9% - 2s H 0 0 10.0000000 7.00000 30.0% - 2s H 0 0 8.0000000 7.00000 12.5% - 2s * 0 0 0 7.0000000 7.00000 0.0% - 2s Cutting planes: Gomory: 3 Clique: 51 Zero half: 51 Explored 0 nodes (13016 simplex iterations) in 2.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%