Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:45:57 2012

Optimize a model with 2018 rows, 90 columns and 4036 nonzeros
Presolve removed 1431 rows and 0 columns
Presolve time: 0.06s
Presolved: 587 rows, 90 columns, 3885 nonzeros
Variable types: 0 continuous, 90 integer (90 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.298419e+01, 309 iterations, 0.01 seconds

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

     0     0   12.98419    0   80    7.00000   12.98419  85.5%     -    0s
     0     0   12.67238    0   89    7.00000   12.67238  81.0%     -    0s
     0     0   12.59737    0   90    7.00000   12.59737  80.0%     -    0s
     0     0   12.59051    0   90    7.00000   12.59051  79.9%     -    0s
     0     0   12.55638    0   90    7.00000   12.55638  79.4%     -    0s
H    0     0                       8.0000000   12.55638  57.0%     -    0s
     0     0   12.53904    0   89    8.00000   12.53904  56.7%     -    0s
     0     0   12.53732    0   90    8.00000   12.53732  56.7%     -    0s
     0     0   12.53716    0   90    8.00000   12.53716  56.7%     -    0s
     0     0   12.53714    0   90    8.00000   12.53714  56.7%     -    0s
     0     2   12.53671    0   90    8.00000   12.53671  56.7%     -    0s

Cutting planes:
  Clique: 67
  Zero half: 3

Explored 162 nodes (9028 simplex iterations) in 1.00 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%