Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:59 2012

Optimize a model with 1322 rows, 72 columns and 2644 nonzeros
Presolve removed 939 rows and 0 columns
Presolve time: 0.03s
Presolved: 383 rows, 72 columns, 2455 nonzeros
Variable types: 0 continuous, 72 integer (72 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.125207e+01, 240 iterations, 0.01 seconds

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

     0     0   11.25207    0   65    6.00000   11.25207  87.5%     -    0s
H    0     0                       7.0000000   11.25207  60.7%     -    0s
     0     0   10.98387    0   70    7.00000   10.98387  56.9%     -    0s
     0     0   10.87525    0   71    7.00000   10.87525  55.4%     -    0s
     0     0   10.82782    0   70    7.00000   10.82782  54.7%     -    0s
     0     0   10.80537    0   70    7.00000   10.80537  54.4%     -    0s
H    0     0                       8.0000000   10.80537  35.1%     -    0s
     0     0   10.78992    0   69    8.00000   10.78992  34.9%     -    0s
     0     0   10.78562    0   70    8.00000   10.78562  34.8%     -    0s
     0     0   10.78505    0   70    8.00000   10.78505  34.8%     -    0s
     0     2   10.78436    0   70    8.00000   10.78436  34.8%     -    0s

Cutting planes:
  Clique: 31
  Zero half: 7

Explored 33 nodes (2281 simplex iterations) in 0.31 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%