Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:14 2012 Optimize a model with 1 rows, 159 columns and 159 nonzeros Model has 130 quadratic objective terms Presolve removed 0 rows and 30 columns Presolve time: 0.00s Presolved: 131 rows, 259 columns, 519 nonzeros Variable types: 0 continuous, 259 integer (258 binary) Found heuristic solution: objective 34.0000000 Root relaxation: objective 0.000000e+00, 155 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 37 34.00000 0.00000 100% - 0s 0 0 0.00000 0 22 34.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 18.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 14.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 10.00000 0.00000 100% - 0s 0 0 0.00000 0 15 10.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 2 0.00000 0 15 8.00000 0.00000 100% - 0s H 27 26 6.0000000 0.00000 100% 6.1 0s H 82 51 5.0000000 0.00000 100% 6.0 0s H 188 74 4.0000000 0.00000 100% 8.3 0s * 198 57 14 3.0000000 0.00000 100% 8.1 0s * 243 26 8 2.0000000 1.00000 50.0% 17.5 0s Cutting planes: Cover: 240 Explored 268 nodes (6739 simplex iterations) in 0.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%