Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:46:09 2012

Optimize a model with 2060 rows, 91 columns and 4120 nonzeros
Presolve removed 1477 rows and 0 columns
Presolve time: 0.06s
Presolved: 583 rows, 91 columns, 3798 nonzeros
Variable types: 0 continuous, 91 integer (91 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.363103e+01, 316 iterations, 0.01 seconds

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

     0     0   13.63103    0   85    6.00000   13.63103   127%     -    0s
H    0     0                       7.0000000   13.63103  94.7%     -    0s
H    0     0                       8.0000000   13.63103  70.4%     -    0s
     0     0   12.98937    0   90    8.00000   12.98937  62.4%     -    0s
     0     0   12.92886    0   91    8.00000   12.92886  61.6%     -    0s
     0     0   12.89912    0   91    8.00000   12.89912  61.2%     -    0s
     0     0   12.89599    0   91    8.00000   12.89599  61.2%     -    0s
     0     0   12.88352    0   91    8.00000   12.88352  61.0%     -    0s
     0     0   12.87677    0   91    8.00000   12.87677  61.0%     -    0s
     0     2   12.87379    0   91    8.00000   12.87379  60.9%     -    0s
*   50    24               5       9.0000000   12.52006  39.1%  59.6    0s

Cutting planes:
  Clique: 74

Explored 107 nodes (6258 simplex iterations) in 0.87 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%