Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:35:55 2012 Optimize a model with 1 rows, 166 columns and 166 nonzeros Model has 154 quadratic objective terms Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 155 rows, 297 columns, 605 nonzeros Variable types: 0 continuous, 297 integer (296 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 0.000000e+00, 188 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 41.00000 0.00000 100% - 0s 0 0 0.00000 0 39 41.00000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s 0 0 0.00000 0 39 31.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 31 16.00000 0.00000 100% - 0s 0 0 0.00000 0 21 16.00000 0.00000 100% - 0s 0 0 0.00000 0 23 16.00000 0.00000 100% - 0s 0 0 0.00000 0 15 16.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 2 0.00000 0 15 12.00000 0.00000 100% - 0s H 54 44 11.0000000 0.00000 100% 1.7 0s H 407 206 9.0000000 0.00000 100% 7.4 0s H 488 181 8.0000000 0.00000 100% 9.6 0s H 515 150 7.0000000 0.00000 100% 10.8 0s Cutting planes: Cover: 288 MIR: 9 Zero half: 1 Explored 802 nodes (19730 simplex iterations) in 0.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%