Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:09 2012 Optimize a model with 1 rows, 9 columns and 9 nonzeros Model has 14 quadratic objective terms Presolve time: 0.00s Presolved: 15 rows, 23 columns, 51 nonzeros Variable types: 0 continuous, 23 integer (23 binary) Found heuristic solution: objective 8.0000000 Found heuristic solution: objective 7.0000000 Root relaxation: objective 0.000000e+00, 17 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 9 7.00000 0.00000 100% - 0s 0 0 0.00000 0 6 7.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 6.00000 0.00000 100% - 0s 0 0 0.00000 0 6 6.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 2 0.00000 0 6 4.00000 0.00000 100% - 0s Cutting planes: Gomory: 1 Cover: 21 Explored 30 nodes (135 simplex iterations) in 0.00 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%