Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:57 2012

Optimize a model with 1 rows, 161 columns and 161 nonzeros
Model has 148 quadratic objective terms
Presolve removed 0 rows and 25 columns
Presolve time: 0.00s
Presolved: 149 rows, 284 columns, 580 nonzeros
Variable types: 0 continuous, 284 integer (283 binary)
Found heuristic solution: objective 40.0000000

Root relaxation: objective 0.000000e+00, 185 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   44   40.00000    0.00000   100%     -    0s
     0     0    0.00000    0   30   40.00000    0.00000   100%     -    0s
H    0     0                      28.0000000    0.00000   100%     -    0s
H    0     0                      25.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   22   25.00000    0.00000   100%     -    0s
H    0     0                      10.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   20   10.00000    0.00000   100%     -    0s
     0     0    0.00000    0   40   10.00000    0.00000   100%     -    0s
     0     0    0.00000    0   19   10.00000    0.00000   100%     -    0s
     0     0    0.00000    0   25   10.00000    0.00000   100%     -    0s
     0     0    0.00000    0   23   10.00000    0.00000   100%     -    0s
     0     2    0.00000    0   21   10.00000    0.00000   100%     -    0s
H  271   158                       8.0000000    0.00000   100%   6.6    0s
H  381   134                       6.0000000    1.00000  83.3%   8.8    0s

Cutting planes:
  Cover: 276
  MIR: 6
  Zero half: 3

Explored 567 nodes (17772 simplex iterations) in 0.33 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%