Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:39:59 2012

Optimize a model with 1 rows, 171 columns and 171 nonzeros
Model has 173 quadratic objective terms
Presolve removed 0 rows and 19 columns
Presolve time: 0.00s
Presolved: 174 rows, 325 columns, 671 nonzeros
Variable types: 0 continuous, 325 integer (324 binary)
Found heuristic solution: objective 52.0000000

Root relaxation: objective 0.000000e+00, 218 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   59   52.00000    0.00000   100%     -    0s
     0     0    0.00000    0   63   52.00000    0.00000   100%     -    0s
     0     0    0.00000    0   43   52.00000    0.00000   100%     -    0s
H    0     0                      36.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   43   36.00000    0.00000   100%     -    0s
H   27    27                      28.0000000    0.00000   100%   3.9    0s
H   81    80                      26.0000000    0.00000   100%   2.3    0s
H  108    89                      21.0000000    0.00000   100%   2.6    0s
H  162   129                      19.0000000    0.00000   100%   2.8    0s
H  189   119                      14.0000000    0.00000   100%   2.9    0s
H  378   208                      11.0000000    0.00000   100%   7.0    0s
H40804 19697                       9.0000000    1.00000  88.9%   1.9    6s
*40984 18728              37       8.0000000    2.56503  67.9%   2.1    8s

Cutting planes:
  Gomory: 109
  Cover: 222
  MIR: 113
  Flow cover: 115
  Zero half: 292

Explored 41134 nodes (94047 simplex iterations) in 8.67 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%