Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:52:57 2012 Optimize a model with 3089 rows, 111 columns and 6178 nonzeros Presolve removed 2231 rows and 0 columns Presolve time: 0.09s Presolved: 858 rows, 111 columns, 5917 nonzeros Variable types: 0 continuous, 111 integer (111 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.523953e+01, 464 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.23953 0 104 7.00000 15.23953 118% - 0s H 0 0 9.0000000 15.23953 69.3% - 0s 0 0 14.82220 0 110 9.00000 14.82220 64.7% - 0s 0 0 14.74215 0 110 9.00000 14.74215 63.8% - 0s 0 0 14.69938 0 110 9.00000 14.69938 63.3% - 0s 0 0 14.68297 0 110 9.00000 14.68297 63.1% - 0s 0 0 14.67976 0 110 9.00000 14.67976 63.1% - 0s 0 0 14.66627 0 111 9.00000 14.66627 63.0% - 0s 0 0 14.65873 0 110 9.00000 14.65873 62.9% - 1s 0 0 14.65829 0 110 9.00000 14.65829 62.9% - 1s 0 0 14.65825 0 110 9.00000 14.65825 62.9% - 1s 0 2 14.65738 0 110 9.00000 14.65738 62.9% - 1s Cutting planes: Clique: 99 Zero half: 1 Explored 385 nodes (21616 simplex iterations) in 3.00 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%