Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:02 2012 Optimize a model with 1 rows, 4 columns and 4 nonzeros Model has 4 quadratic objective terms Presolve time: 0.00s Presolved: 5 rows, 8 columns, 16 nonzeros Variable types: 0 continuous, 8 integer (8 binary) Found heuristic solution: objective 3.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: objective 0.000000e+00, 5 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 2 2.00000 0.00000 100% - 0s 0 0 0.66667 0 6 2.00000 0.66667 66.7% - 0s 0 0 cutoff 0 2.00000 1.00000 50.0% - 0s Cutting planes: Cover: 1 Clique: 2 Explored 0 nodes (14 simplex iterations) in 0.00 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%