Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:58 2012 Optimize a model with 1 rows, 161 columns and 161 nonzeros Model has 155 quadratic objective terms Presolve removed 0 rows and 19 columns Presolve time: 0.00s Presolved: 156 rows, 297 columns, 607 nonzeros Variable types: 0 continuous, 297 integer (296 binary) Found heuristic solution: objective 42.0000000 Root relaxation: objective 0.000000e+00, 198 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 41 42.00000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s 0 0 0.00000 0 30 34.00000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s 0 0 0.00000 0 30 29.00000 0.00000 100% - 0s 0 0 0.00000 0 24 29.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 2 0.00000 0 24 22.00000 0.00000 100% - 0s H 27 27 21.0000000 0.00000 100% 2.9 0s H 54 54 19.0000000 0.00000 100% 2.5 0s H 81 61 15.0000000 0.00000 100% 3.3 0s H 162 132 14.0000000 0.00000 100% 3.5 0s H 301 227 13.0000000 0.00000 100% 5.5 0s H 459 293 11.0000000 0.00000 100% 8.2 0s H 513 194 7.0000000 0.00000 100% 8.2 0s 40896 19615 5.81818 39 179 7.00000 2.00000 71.4% 2.0 5s *41241 18471 48 6.0000000 6.00000 0.0% 2.4 6s Cutting planes: Gomory: 69 Cover: 165 MIR: 82 Flow cover: 103 Zero half: 354 Explored 41242 nodes (98984 simplex iterations) in 6.29 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%