Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:40:44 2012 Optimize a model with 1 rows, 172 columns and 172 nonzeros Model has 152 quadratic objective terms Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 153 rows, 300 columns, 604 nonzeros Variable types: 0 continuous, 300 integer (299 binary) Found heuristic solution: objective 47.0000000 Root relaxation: objective 0.000000e+00, 187 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 49 47.00000 0.00000 100% - 0s 0 0 0.00000 0 30 47.00000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.00000 0 20 20.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 34 14.00000 0.00000 100% - 0s 0 0 0.00000 0 23 14.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 2 0.00000 0 23 10.00000 0.00000 100% - 0s H 189 129 9.0000000 0.00000 100% 3.6 0s H 325 158 7.0000000 0.00000 100% 6.2 0s H 331 105 5.0000000 0.00000 100% 6.5 0s H 380 83 4.0000000 0.00000 100% 6.4 0s Cutting planes: Cover: 266 Explored 539 nodes (12944 simplex iterations) in 0.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%