Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:50 2012

Optimize a model with 1689 rows, 82 columns and 3378 nonzeros
Presolve removed 1216 rows and 0 columns
Presolve time: 0.05s
Presolved: 473 rows, 82 columns, 3125 nonzeros
Variable types: 0 continuous, 82 integer (82 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.233960e+01, 321 iterations, 0.01 seconds

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

     0     0   12.33960    0   78    7.00000   12.33960  76.3%     -    0s
H    0     0                       8.0000000   12.33960  54.2%     -    0s
     0     0   11.98903    0   76    8.00000   11.98903  49.9%     -    0s
     0     0   11.89920    0   79    8.00000   11.89920  48.7%     -    0s
     0     0   11.88138    0   80    8.00000   11.88138  48.5%     -    0s
     0     0   11.83631    0   81    8.00000   11.83631  48.0%     -    0s
     0     0   11.82557    0   81    8.00000   11.82557  47.8%     -    0s
     0     0   11.81326    0   80    8.00000   11.81326  47.7%     -    0s
     0     0   11.80344    0   82    8.00000   11.80344  47.5%     -    0s
     0     0   11.80157    0   81    8.00000   11.80157  47.5%     -    0s
     0     0   11.80156    0   81    8.00000   11.80156  47.5%     -    0s
     0     2   11.79630    0   81    8.00000   11.79630  47.5%     -    0s

Cutting planes:
  Clique: 59
  Zero half: 2

Explored 81 nodes (4623 simplex iterations) in 0.76 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%