Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:09:08 2012 Optimize a model with 3012 rows, 552 columns and 9474 nonzeros Presolve removed 281 rows and 2 columns Presolve time: 0.07s Presolved: 2754 rows, 550 columns, 15898 nonzeros Variable types: 0 continuous, 550 integer (550 binary) Found heuristic solution: objective 22.0000000 Root relaxation: objective 6.000000e+00, 3003 iterations, 0.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 6.00000 0 12 22.00000 6.00000 72.7% - 0s H 0 0 19.0000000 6.00000 68.4% - 0s H 0 0 8.0000000 6.00000 25.0% - 0s H 0 0 7.0000000 6.00000 14.3% - 0s 0 0 6.00000 0 121 7.00000 6.00000 14.3% - 0s H 0 0 6.0000000 6.00000 0.0% - 0s Cutting planes: Gomory: 1 Clique: 2 Zero half: 1 Explored 0 nodes (5963 simplex iterations) in 0.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%