Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:27 2012

Optimize a model with 1 rows, 29 columns and 29 nonzeros
Model has 53 quadratic objective terms
Presolve time: 0.00s
Presolved: 54 rows, 82 columns, 188 nonzeros
Variable types: 0 continuous, 82 integer (82 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 0.000000e+00, 67 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   24   23.00000    0.00000   100%     -    0s
     0     0    0.00000    0   22   23.00000    0.00000   100%     -    0s
H    0     0                      21.0000000    0.00000   100%     -    0s
H    0     0                      19.0000000    0.00000   100%     -    0s
H    0     0                      16.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   37   16.00000    0.00000   100%     -    0s
     0     0    0.00000    0   12   16.00000    0.00000   100%     -    0s
H    0     0                      12.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   12   12.00000    0.00000   100%     -    0s
*  135    53               7      11.0000000    1.00000  90.9%   7.0    0s

Cutting planes:
  Cover: 101

Explored 258 nodes (2734 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%