Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:41 2012

Optimize a model with 1 rows, 31 columns and 31 nonzeros
Model has 39 quadratic objective terms
Presolve removed 0 rows and 2 columns
Presolve time: 0.00s
Presolved: 40 rows, 68 columns, 146 nonzeros
Variable types: 0 continuous, 68 integer (67 binary)
Found heuristic solution: objective 16.0000000

Root relaxation: objective 0.000000e+00, 52 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    8   16.00000    0.00000   100%     -    0s
H    0     0                       8.0000000    0.00000   100%     -    0s
     0     0    0.00000    0    9    8.00000    0.00000   100%     -    0s
     0     0    0.00000    0    8    8.00000    0.00000   100%     -    0s
     0     0    0.00000    0    8    8.00000    0.00000   100%     -    0s
H    0     0                       7.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   16    7.00000    0.00000   100%     -    0s
     0     0    0.00000    0   12    7.00000    0.00000   100%     -    0s
     0     2    0.00000    0   12    7.00000    0.00000   100%     -    0s
H   39    26                       6.0000000    0.00000   100%   3.1    0s
H  106    35                       5.0000000    0.00000   100%   5.0    0s

Cutting planes:
  Cover: 70

Explored 156 nodes (1381 simplex iterations) in 0.03 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%