Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:35:08 2012 Optimize a model with 1 rows, 164 columns and 164 nonzeros Model has 133 quadratic objective terms Presolve removed 0 rows and 28 columns Presolve time: 0.00s Presolved: 134 rows, 269 columns, 535 nonzeros Variable types: 0 continuous, 269 integer (268 binary) Found heuristic solution: objective 38.0000000 Root relaxation: objective 0.000000e+00, 158 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 40 38.00000 0.00000 100% - 0s 0 0 0.00000 0 22 38.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 19.00000 0.00000 100% - 0s 0 0 0.00000 0 22 19.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 2 0.00000 0 18 12.00000 0.00000 100% - 0s H 27 27 11.0000000 0.00000 100% 1.7 0s H 87 58 8.0000000 0.00000 100% 2.5 0s H 94 57 6.0000000 0.00000 100% 2.4 0s H 110 42 4.0000000 0.00000 100% 2.3 0s H 138 32 2.0000000 0.00000 100% 2.5 0s H 165 14 1.0000000 0.00000 100% 3.1 0s Cutting planes: Cover: 76 Explored 166 nodes (838 simplex iterations) in 0.04 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%