Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:51:02 2012 Optimize a model with 2866 rows, 107 columns and 5732 nonzeros Presolve removed 2057 rows and 0 columns Presolve time: 0.10s Presolved: 809 rows, 107 columns, 5589 nonzeros Variable types: 0 continuous, 107 integer (107 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.462792e+01, 467 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.62792 0 103 7.00000 14.62792 109% - 0s 0 0 14.40724 0 105 7.00000 14.40724 106% - 0s H 0 0 8.0000000 14.40724 80.1% - 0s 0 0 14.36054 0 105 8.00000 14.36054 79.5% - 0s 0 0 14.33795 0 106 8.00000 14.33795 79.2% - 0s 0 0 14.33065 0 106 8.00000 14.33065 79.1% - 0s 0 0 14.32706 0 106 8.00000 14.32706 79.1% - 0s 0 0 14.32180 0 105 8.00000 14.32180 79.0% - 0s 0 2 14.32095 0 105 8.00000 14.32095 79.0% - 1s * 148 66 12 9.0000000 13.50094 50.0% 53.8 1s Cutting planes: Gomory: 2 Clique: 38 Zero half: 7 Explored 323 nodes (18043 simplex iterations) in 2.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%