Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:26:17 2012 Optimize a model with 1 rows, 149 columns and 149 nonzeros Model has 132 quadratic objective terms Presolve removed 0 rows and 22 columns Presolve time: 0.00s Presolved: 133 rows, 259 columns, 523 nonzeros Variable types: 0 continuous, 259 integer (258 binary) Found heuristic solution: objective 38.0000000 Root relaxation: objective 0.000000e+00, 163 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 38 38.00000 0.00000 100% - 0s 0 0 0.00000 0 16 38.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 22 14.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 12.00000 0.00000 100% - 0s 0 0 0.00000 0 13 12.00000 0.00000 100% - 0s 0 0 0.00000 0 9 12.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 9.00000 0.00000 100% - 0s 0 0 0.00000 0 7 9.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 7.00000 0.00000 100% - 0s 0 0 0.00000 0 9 7.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 2 0.00000 0 9 6.00000 0.00000 100% - 0s * 458 162 31 5.0000000 0.00000 100% 9.5 0s H 544 113 4.0000000 1.00000 75.0% 13.4 0s Cutting planes: Cover: 249 Explored 662 nodes (15918 simplex iterations) in 0.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%