Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:56 2012

Optimize a model with 1 rows, 33 columns and 33 nonzeros
Model has 40 quadratic objective terms
Presolve removed 0 rows and 1 columns
Presolve time: 0.00s
Presolved: 41 rows, 72 columns, 152 nonzeros
Variable types: 0 continuous, 72 integer (71 binary)
Found heuristic solution: objective 12.0000000

Root relaxation: objective 0.000000e+00, 55 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   12.00000    0.00000   100%     -    0s
H    0     0                       9.0000000    0.00000   100%     -    0s
     0     0    0.00000    0    9    9.00000    0.00000   100%     -    0s
     0     0    0.00000    0   10    9.00000    0.00000   100%     -    0s
     0     0    0.00000    0   10    9.00000    0.00000   100%     -    0s
H    0     0                       8.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   10    8.00000    0.00000   100%     -    0s
H    4     4                       6.0000000    0.00000   100%  10.0    0s
H   13    13                       5.0000000    0.00000   100%   4.5    0s

Cutting planes:
  Cover: 75

Explored 77 nodes (801 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%