Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:35:32 2012 Optimize a model with 1 rows, 165 columns and 165 nonzeros Model has 137 quadratic objective terms Presolve removed 0 rows and 27 columns Presolve time: 0.00s Presolved: 138 rows, 275 columns, 549 nonzeros Variable types: 0 continuous, 275 integer (274 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 0.000000e+00, 164 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 10 33.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 10.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 8.00000 0.00000 100% - 0s 0 0 0.00000 0 18 8.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 2 0.00000 0 18 7.00000 0.00000 100% - 0s H 84 41 6.0000000 0.00000 100% 2.6 0s * 122 43 14 5.0000000 0.00000 100% 3.3 0s H 135 31 3.0000000 0.00000 100% 3.9 0s H 297 49 2.0000000 0.00000 100% 7.9 0s Cutting planes: Cover: 225 Explored 434 nodes (4915 simplex iterations) in 0.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%