Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:29:16 2012 Optimize a model with 1 rows, 158 columns and 158 nonzeros Model has 129 quadratic objective terms Presolve removed 0 rows and 32 columns Presolve time: 0.00s Presolved: 130 rows, 255 columns, 513 nonzeros Variable types: 0 continuous, 255 integer (254 binary) Found heuristic solution: objective 34.0000000 Root relaxation: objective 0.000000e+00, 153 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 32 34.00000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s 0 0 0.00000 0 25 29.00000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 19.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 18.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 10.00000 0.00000 100% - 0s 0 0 0.00000 0 16 10.00000 0.00000 100% - 0s 0 0 0.00000 0 17 10.00000 0.00000 100% - 0s 0 0 0.00000 0 16 10.00000 0.00000 100% - 0s 0 0 0.00000 0 19 10.00000 0.00000 100% - 0s 0 0 0.00000 0 12 10.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 8.00000 0.00000 100% - 0s 0 0 0.00000 0 14 8.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 2 0.00000 0 14 7.00000 0.00000 100% - 0s H 191 104 6.0000000 0.00000 100% 9.2 0s H 218 91 5.0000000 0.00000 100% 8.3 0s * 230 68 15 4.0000000 0.00000 100% 8.5 0s * 325 47 13 3.0000000 1.00000 66.7% 12.9 0s Cutting planes: Cover: 228 Explored 376 nodes (7518 simplex iterations) in 0.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%