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 135 quadratic objective terms Presolve removed 0 rows and 34 columns Presolve time: 0.00s Presolved: 136 rows, 266 columns, 536 nonzeros Variable types: 0 continuous, 266 integer (265 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 0.000000e+00, 174 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 33 31.00000 0.00000 100% - 0s 0 0 0.00000 0 22 31.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 24 18.00000 0.00000 100% - 0s 0 0 0.00000 0 17 18.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 13.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 9.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 7.00000 0.00000 100% - 0s 0 0 0.00000 0 12 7.00000 0.00000 100% - 0s 0 2 0.00000 0 12 7.00000 0.00000 100% - 0s H 27 20 6.0000000 0.00000 100% 1.7 0s * 448 149 18 5.0000000 0.00000 100% 12.5 0s Cutting planes: Cover: 247 Explored 671 nodes (20176 simplex iterations) in 0.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%