Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:16 2012

Optimize a model with 1419 rows, 76 columns and 2838 nonzeros
Presolve removed 981 rows and 0 columns
Presolve time: 0.03s
Presolved: 438 rows, 76 columns, 2757 nonzeros
Variable types: 0 continuous, 76 integer (76 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.219021e+01, 234 iterations, 0.01 seconds

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

     0     0   12.19021    0   71    7.00000   12.19021  74.1%     -    0s
     0     0   11.89117    0   74    7.00000   11.89117  69.9%     -    0s
H    0     0                       8.0000000   11.89117  48.6%     -    0s
     0     0   11.83648    0   74    8.00000   11.83648  48.0%     -    0s
     0     0   11.79765    0   75    8.00000   11.79765  47.5%     -    0s
     0     0   11.78475    0   74    8.00000   11.78475  47.3%     -    0s
     0     0   11.77828    0   73    8.00000   11.77828  47.2%     -    0s
     0     0   11.77229    0   75    8.00000   11.77229  47.2%     -    0s
     0     0   11.77058    0   74    8.00000   11.77058  47.1%     -    0s
     0     0   11.75484    0   75    8.00000   11.75484  46.9%     -    0s
     0     0   11.73525    0   74    8.00000   11.73525  46.7%     -    0s
     0     0   11.73220    0   74    8.00000   11.73220  46.7%     -    0s
     0     0   11.73160    0   75    8.00000   11.73160  46.6%     -    0s
     0     0   11.73018    0   75    8.00000   11.73018  46.6%     -    0s
     0     2   11.72869    0   75    8.00000   11.72869  46.6%     -    0s

Cutting planes:
  Clique: 38
  Zero half: 5

Explored 90 nodes (4205 simplex iterations) in 0.64 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%