Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:34:46 2012 Optimize a model with 1 rows, 163 columns and 163 nonzeros Model has 132 quadratic objective terms Presolve removed 0 rows and 30 columns Presolve time: 0.00s Presolved: 133 rows, 265 columns, 529 nonzeros Variable types: 0 continuous, 265 integer (264 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 0.000000e+00, 163 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 18 33.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 28 16.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 15.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 11.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 9 9.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 8.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 7.00000 0.00000 100% - 0s 0 0 0.00000 0 10 7.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 2 0.00000 0 7 6.00000 0.00000 100% - 0s H 110 38 4.0000000 0.00000 100% 5.0 0s H 135 49 3.0000000 0.00000 100% 5.3 0s H 392 44 2.0000000 0.00000 100% 8.8 0s * 455 2 19 1.0000000 1.00000 0.0% 10.4 0s Cutting planes: Cover: 217 Explored 456 nodes (5225 simplex iterations) in 0.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+00, best bound 1.000000000000e+00, gap 0.0%