Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:34:45 2012 Optimize a model with 1 rows, 163 columns and 163 nonzeros Model has 153 quadratic objective terms Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 154 rows, 293 columns, 599 nonzeros Variable types: 0 continuous, 293 integer (292 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 0.000000e+00, 196 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 40.00000 0.00000 100% - 0s 0 0 0.00000 0 40 40.00000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 0 0.00000 0 35 23.00000 0.00000 100% - 0s 0 0 0.00000 0 27 23.00000 0.00000 100% - 0s 0 0 0.00000 0 28 23.00000 0.00000 100% - 0s 0 0 0.00000 0 27 23.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 2 0.00000 0 22 14.00000 0.00000 100% - 0s H 82 55 12.0000000 0.00000 100% 2.1 0s H 109 61 11.0000000 0.00000 100% 1.9 0s H 271 170 10.0000000 0.00000 100% 5.6 0s * 318 179 31 9.0000000 0.00000 100% 6.5 0s * 455 166 16 7.0000000 0.00000 100% 8.6 0s * 550 131 11 6.0000000 1.00000 83.3% 11.9 0s H 569 81 5.0000000 1.00000 80.0% 13.0 0s Cutting planes: Cover: 283 MIR: 4 Zero half: 2 Explored 663 nodes (17236 simplex iterations) in 0.35 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%