Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:34:24 2012 Optimize a model with 1 rows, 162 columns and 162 nonzeros Model has 131 quadratic objective terms Presolve removed 0 rows and 30 columns Presolve time: 0.00s Presolved: 132 rows, 263 columns, 525 nonzeros Variable types: 0 continuous, 263 integer (262 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 0.000000e+00, 157 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 28 28.00000 0.00000 100% - 0s 0 0 0.00000 0 24 28.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 17.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 31 11.00000 0.00000 100% - 0s 0 0 0.00000 0 21 11.00000 0.00000 100% - 0s 0 0 0.00000 0 13 11.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 7.00000 0.00000 100% - 0s 0 0 0.00000 0 13 7.00000 0.00000 100% - 0s 0 2 0.00000 0 13 7.00000 0.00000 100% - 0s * 27 25 18 6.0000000 0.00000 100% 1.4 0s H 341 179 5.0000000 0.00000 100% 9.2 0s * 383 142 11 4.0000000 0.00000 100% 10.1 0s * 424 80 12 3.0000000 1.00000 66.7% 13.2 0s Cutting planes: Cover: 238 MIR: 3 Explored 512 nodes (10644 simplex iterations) in 0.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%