Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:39:56 2012 Optimize a model with 1 rows, 171 columns and 171 nonzeros Model has 148 quadratic objective terms Presolve removed 0 rows and 27 columns Presolve time: 0.00s Presolved: 149 rows, 292 columns, 588 nonzeros Variable types: 0 continuous, 292 integer (291 binary) Found heuristic solution: objective 38.0000000 Root relaxation: objective 0.000000e+00, 182 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 42 38.00000 0.00000 100% - 0s 0 0 0.00000 0 30 38.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 25.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 12.00000 0.00000 100% - 0s 0 0 0.00000 0 16 12.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 9.00000 0.00000 100% - 0s 0 0 0.00000 0 17 9.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 2 0.00000 0 17 8.00000 0.00000 100% - 0s H 151 84 7.0000000 0.00000 100% 6.4 0s H 163 66 5.0000000 0.00000 100% 6.3 0s * 371 78 15 4.0000000 0.00000 100% 9.3 0s * 411 11 7 3.0000000 2.00000 33.3% 16.5 0s Cutting planes: Cover: 261 Explored 423 nodes (7985 simplex iterations) in 0.17 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%