Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:04 2012 Optimize a model with 1 rows, 34 columns and 34 nonzeros Model has 55 quadratic objective terms Presolve time: 0.00s Presolved: 56 rows, 89 columns, 199 nonzeros Variable types: 0 continuous, 89 integer (89 binary) Found heuristic solution: objective 23.0000000 Root relaxation: objective 0.000000e+00, 65 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 19 23.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 31 19.00000 0.00000 100% - 0s 0 0 0.00000 0 19 19.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 17.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 13.00000 0.00000 100% - 0s 0 0 0.00000 0 19 13.00000 0.00000 100% - 0s 0 0 0.00000 0 16 13.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 2 0.00000 0 15 11.00000 0.00000 100% - 0s * 130 71 12 10.0000000 0.00000 100% 5.1 0s H 145 70 9.0000000 0.00000 100% 5.3 0s * 168 47 7 8.0000000 4.00000 50.0% 8.9 0s Cutting planes: Cover: 101 MIR: 5 Zero half: 3 Explored 216 nodes (2359 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%