Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:35:56 2012 Optimize a model with 1 rows, 166 columns and 166 nonzeros Model has 119 quadratic objective terms Presolve removed 0 rows and 38 columns Presolve time: 0.00s Presolved: 120 rows, 247 columns, 485 nonzeros Variable types: 0 continuous, 247 integer (246 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 0.000000e+00, 149 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 17 28.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 15.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 9 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 11 7.00000 0.00000 100% - 0s 0 0 0.00000 0 11 7.00000 0.00000 100% - 0s 0 2 0.00000 0 11 7.00000 0.00000 100% - 0s H 27 24 6.0000000 0.00000 100% 5.1 0s H 76 29 4.0000000 0.00000 100% 4.0 0s H 110 20 2.0000000 0.00000 100% 3.6 0s * 253 10 29 1.0000000 0.00000 100% 7.2 0s Cutting planes: Cover: 130 Explored 254 nodes (2116 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+00, best bound 1.000000000000e+00, gap 0.0%