Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:17:05 2012 Optimize a model with 4419 rows, 702 columns and 13830 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.08s Presolved: 4443 rows, 700 columns, 21855 nonzeros Variable types: 0 continuous, 700 integer (700 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 4.448980e+00, 3818 iterations, 0.21 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 4.44898 0 344 26.00000 4.44898 82.9% - 0s H 0 0 25.0000000 4.44898 82.2% - 0s 0 0 7.00000 0 38 25.00000 7.00000 72.0% - 1s H 0 0 24.0000000 7.00000 70.8% - 1s H 0 0 17.0000000 7.00000 58.8% - 1s H 0 0 8.0000000 7.00000 12.5% - 1s * 0 0 0 7.0000000 7.00000 0.0% - 1s Cutting planes: Gomory: 1 Clique: 15 Zero half: 12 Explored 0 nodes (8858 simplex iterations) in 1.20 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%