Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:25 2012

Optimize a model with 773 rows, 57 columns and 1546 nonzeros
Presolve removed 529 rows and 0 columns
Presolve time: 0.01s
Presolved: 244 rows, 57 columns, 1341 nonzeros
Variable types: 0 continuous, 57 integer (57 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.057325e+01, 132 iterations, 0.00 seconds

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

     0     0   10.57325    0   50    7.00000   10.57325  51.0%     -    0s
H    0     0                       8.0000000   10.57325  32.2%     -    0s
     0     0   10.10956    0   56    8.00000   10.10956  26.4%     -    0s
     0     0   10.01992    0   54    8.00000   10.01992  25.2%     -    0s
     0     0   10.00950    0   54    8.00000   10.00950  25.1%     -    0s
     0     0    9.95895    0   56    8.00000    9.95895  24.5%     -    0s
     0     0    9.92344    0   52    8.00000    9.92344  24.0%     -    0s
     0     0    9.90418    0   54    8.00000    9.90418  23.8%     -    0s
     0     0    9.90225    0   54    8.00000    9.90225  23.8%     -    0s
     0     0    9.89135    0   56    8.00000    9.89135  23.6%     -    0s
     0     0    9.88333    0   56    8.00000    9.88333  23.5%     -    0s
     0     0    9.88106    0   56    8.00000    9.88106  23.5%     -    0s
     0     0    9.88068    0   56    8.00000    9.88068  23.5%     -    0s
     0     2    9.87948    0   56    8.00000    9.87948  23.5%     -    0s

Cutting planes:
  Clique: 26
  Zero half: 8

Explored 14 nodes (738 simplex iterations) in 0.15 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%