Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:42:29 2012 Optimize a model with 1 rows, 175 columns and 175 nonzeros Model has 171 quadratic objective terms Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 172 rows, 323 columns, 665 nonzeros Variable types: 0 continuous, 323 integer (322 binary) Found heuristic solution: objective 49.0000000 Root relaxation: objective 0.000000e+00, 207 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 45 49.00000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s 0 0 0.00000 0 39 40.00000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s 0 0 0.00000 0 35 27.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.00000 0 55 22.00000 0.00000 100% - 0s 0 0 0.00000 0 20 22.00000 0.00000 100% - 0s H 0 0 17.0000000 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 0 0 0.00000 0 28 16.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 2 0.00000 0 28 15.00000 0.00000 100% - 0s H 27 27 13.0000000 0.00000 100% 2.6 0s H 358 213 10.0000000 0.00000 100% 7.2 0s H 376 205 9.0000000 0.00000 100% 7.2 0s H 379 165 7.0000000 0.00000 100% 7.5 0s H 451 139 6.0000000 0.00000 100% 9.5 0s Cutting planes: Cover: 317 MIR: 2 Zero half: 2 Explored 627 nodes (20870 simplex iterations) in 0.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%