Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:34 2012

Optimize a model with 1 rows, 30 columns and 30 nonzeros
Model has 51 quadratic objective terms
Presolve time: 0.00s
Presolved: 52 rows, 81 columns, 183 nonzeros
Variable types: 0 continuous, 81 integer (81 binary)
Found heuristic solution: objective 20.0000000

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   22   20.00000    0.00000   100%     -    0s
H    0     0                      16.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   28   16.00000    0.00000   100%     -    0s
     0     0    0.00000    0   18   16.00000    0.00000   100%     -    0s
H    0     0                      11.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   18   11.00000    0.00000   100%     -    0s
*  105    57              10      10.0000000    0.00000   100%   6.4    0s
*  115    39               4       8.0000000    1.00000  87.5%   7.4    0s

Cutting planes:
  Cover: 95

Explored 165 nodes (2026 simplex iterations) in 0.03 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%