Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:22:21 2012 Optimize a model with 1 rows, 133 columns and 133 nonzeros Model has 89 quadratic objective terms Presolve removed 0 rows and 32 columns Presolve time: 0.00s Presolved: 90 rows, 190 columns, 368 nonzeros Variable types: 0 continuous, 190 integer (189 binary) Found heuristic solution: objective 23.0000000 Root relaxation: objective 0.000000e+00, 102 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 21 23.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 20.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 9.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 6 6.00000 0.00000 100% - 0s 0 0 0.00000 0 20 6.00000 0.00000 100% - 0s 0 0 0.00000 0 4 6.00000 0.00000 100% - 0s H 0 0 3.0000000 0.00000 100% - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Cover: 3 Explored 0 nodes (204 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0%