Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:48:56 2012 Optimize a model with 2629 rows, 102 columns and 5258 nonzeros Presolve removed 1881 rows and 0 columns Presolve time: 0.09s Presolved: 748 rows, 102 columns, 5261 nonzeros Variable types: 0 continuous, 102 integer (102 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.426646e+01, 350 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.26646 0 94 6.00000 14.26646 138% - 0s H 0 0 7.0000000 14.26646 104% - 0s H 0 0 8.0000000 14.26646 78.3% - 0s 0 0 13.82880 0 101 8.00000 13.82880 72.9% - 0s 0 0 13.76146 0 99 8.00000 13.76146 72.0% - 0s 0 0 13.72526 0 101 8.00000 13.72526 71.6% - 0s 0 0 13.71464 0 100 8.00000 13.71464 71.4% - 0s H 0 0 9.0000000 13.71464 52.4% - 0s 0 0 13.70660 0 102 9.00000 13.70660 52.3% - 0s 0 0 13.67480 0 102 9.00000 13.67480 51.9% - 0s 0 0 13.62763 0 101 9.00000 13.62763 51.4% - 0s 0 0 13.61141 0 102 9.00000 13.61141 51.2% - 1s 0 0 13.60467 0 102 9.00000 13.60467 51.2% - 1s 0 0 13.59805 0 102 9.00000 13.59805 51.1% - 1s 0 0 13.59800 0 102 9.00000 13.59800 51.1% - 1s 0 0 13.59800 0 102 9.00000 13.59800 51.1% - 1s 0 2 13.59606 0 102 9.00000 13.59606 51.1% - 1s Cutting planes: Clique: 76 Zero half: 1 Explored 137 nodes (10033 simplex iterations) in 2.16 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%