Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:46 2012

Optimize a model with 1119 rows, 68 columns and 2238 nonzeros
Presolve removed 785 rows and 0 columns
Presolve time: 0.02s
Presolved: 334 rows, 68 columns, 1997 nonzeros
Variable types: 0 continuous, 68 integer (68 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.107870e+01, 200 iterations, 0.01 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   11.07870    0   64    7.00000   11.07870  58.3%     -    0s
     0     0   10.82533    0   66    7.00000   10.82533  54.6%     -    0s
     0     0   10.77173    0   66    7.00000   10.77173  53.9%     -    0s
     0     0   10.75127    0   67    7.00000   10.75127  53.6%     -    0s
     0     0   10.73018    0   68    7.00000   10.73018  53.3%     -    0s
     0     0   10.69091    0   68    7.00000   10.69091  52.7%     -    0s
     0     0   10.68805    0   68    7.00000   10.68805  52.7%     -    0s
H    0     0                       8.0000000   10.68805  33.6%     -    0s
     0     0   10.68432    0   68    8.00000   10.68432  33.6%     -    0s
     0     0   10.67368    0   68    8.00000   10.67368  33.4%     -    0s
     0     0   10.67047    0   68    8.00000   10.67047  33.4%     -    0s
     0     0   10.66870    0   68    8.00000   10.66870  33.4%     -    0s
     0     0   10.66855    0   68    8.00000   10.66855  33.4%     -    0s
     0     2   10.66670    0   68    8.00000   10.66670  33.3%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 42
  Zero half: 6

Explored 31 nodes (1717 simplex iterations) in 0.32 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%