Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:09:03 2012 Optimize a model with 1 rows, 24 columns and 24 nonzeros Model has 22 quadratic objective terms Presolve removed 0 rows and 4 columns Presolve time: 0.00s Presolved: 23 rows, 42 columns, 86 nonzeros Variable types: 0 continuous, 42 integer (41 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 0.000000e+00, 27 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 4 8.00000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 0 0.00000 0 4 4.00000 0.00000 100% - 0s 0 0 0.00000 0 6 4.00000 0.00000 100% - 0s 0 0 0.00000 0 6 4.00000 0.00000 100% - 0s H 0 0 3.0000000 0.00000 100% - 0s 0 2 0.00000 0 6 3.00000 0.00000 100% - 0s * 8 8 6 2.0000000 0.00000 100% 4.6 0s Cutting planes: Cover: 31 Explored 38 nodes (208 simplex iterations) in 0.01 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%