Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:35:10 2012 Optimize a model with 1 rows, 164 columns and 164 nonzeros Model has 163 quadratic objective terms Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 164 rows, 302 columns, 628 nonzeros Variable types: 0 continuous, 302 integer (301 binary) Found heuristic solution: objective 48.0000000 Root relaxation: objective 0.000000e+00, 204 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 40 48.00000 0.00000 100% - 0s H 0 0 38.0000000 0.00000 100% - 0s 0 0 0.00000 0 31 38.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 0 0.00000 0 44 26.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.00000 0 28 22.00000 0.00000 100% - 0s 0 0 0.00000 0 36 22.00000 0.00000 100% - 0s 0 0 0.00000 0 35 22.00000 0.00000 100% - 0s 0 0 0.00000 0 25 22.00000 0.00000 100% - 0s 0 0 0.00000 0 14 22.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 23 14.00000 0.00000 100% - 0s 0 0 0.00000 0 18 14.00000 0.00000 100% - 0s 0 2 0.00000 0 18 14.00000 0.00000 100% - 0s H 460 294 13.0000000 0.00000 100% 6.7 0s H 530 308 12.0000000 1.00000 91.7% 8.6 0s H 654 299 11.0000000 1.00000 90.9% 10.9 0s H 781 276 10.0000000 1.00000 90.0% 12.4 0s H 858 242 9.0000000 1.00000 88.9% 13.4 0s Cutting planes: Cover: 311 MIR: 4 Explored 1205 nodes (31665 simplex iterations) in 0.71 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%