Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:34 2012

Optimize a model with 1564 rows, 80 columns and 3128 nonzeros
Presolve removed 1123 rows and 0 columns
Presolve time: 0.04s
Presolved: 441 rows, 80 columns, 2803 nonzeros
Variable types: 0 continuous, 80 integer (80 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.238199e+01, 260 iterations, 0.01 seconds

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

     0     0   12.38199    0   74    7.00000   12.38199  76.9%     -    0s
     0     0   11.94217    0   79    7.00000   11.94217  70.6%     -    0s
H    0     0                       8.0000000   11.94217  49.3%     -    0s
     0     0   11.86738    0   80    8.00000   11.86738  48.3%     -    0s
H    0     0                       9.0000000   11.86738  31.9%     -    0s
     0     0   11.85477    0   80    9.00000   11.85477  31.7%     -    0s
     0     0   11.85219    0   79    9.00000   11.85219  31.7%     -    0s
     0     0   11.85079    0   79    9.00000   11.85079  31.7%     -    0s
     0     2   11.84775    0   79    9.00000   11.84775  31.6%     -    0s

Cutting planes:
  Clique: 42

Explored 32 nodes (2556 simplex iterations) in 0.48 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%