Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:34:46 2012 Optimize a model with 1 rows, 163 columns and 163 nonzeros Model has 117 quadratic objective terms Presolve removed 0 rows and 35 columns Presolve time: 0.00s Presolved: 118 rows, 245 columns, 479 nonzeros Variable types: 0 continuous, 245 integer (244 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 0.000000e+00, 143 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 26 27.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.00000 0 27 20.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 17.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 12.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 11 11.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 9.00000 0.00000 100% - 0s 0 0 0.00000 0 12 9.00000 0.00000 100% - 0s 0 2 0.00000 0 12 9.00000 0.00000 100% - 0s H 19 19 6.0000000 0.00000 100% 2.7 0s * 32 24 22 5.0000000 0.00000 100% 2.2 0s H 39 24 4.0000000 0.00000 100% 2.2 0s * 47 25 13 3.0000000 0.00000 100% 3.0 0s * 74 16 29 2.0000000 0.00000 100% 2.9 0s H 135 7 1.0000000 0.00000 100% 3.0 0s Cutting planes: Cover: 51 Explored 136 nodes (846 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%