Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:35 2012 Optimize a model with 1 rows, 160 columns and 160 nonzeros Model has 129 quadratic objective terms Presolve removed 0 rows and 28 columns Presolve time: 0.00s Presolved: 130 rows, 261 columns, 519 nonzeros Variable types: 0 continuous, 261 integer (260 binary) Found heuristic solution: objective 45.0000000 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 48 45.00000 0.00000 100% - 0s 0 0 0.00000 0 23 45.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 32 18.00000 0.00000 100% - 0s 0 0 0.00000 0 13 18.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 2 0.00000 0 13 10.00000 0.00000 100% - 0s H 54 48 9.0000000 0.00000 100% 3.0 0s H 96 73 8.0000000 0.00000 100% 3.7 0s * 120 72 31 7.0000000 0.00000 100% 3.5 0s * 149 79 20 6.0000000 0.00000 100% 3.6 0s H 289 123 5.0000000 0.00000 100% 6.5 0s H 315 79 3.0000000 0.00000 100% 6.8 0s H 320 55 2.0000000 0.00000 100% 6.7 0s * 363 11 19 1.0000000 0.00000 100% 6.7 0s Cutting planes: Cover: 152 Explored 364 nodes (2732 simplex iterations) in 0.08 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%