Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:45:30 2012

Optimize a model with 1893 rows, 87 columns and 3786 nonzeros
Presolve removed 1324 rows and 0 columns
Presolve time: 0.06s
Presolved: 569 rows, 87 columns, 3779 nonzeros
Variable types: 0 continuous, 87 integer (87 binary)
Found heuristic solution: objective 8.0000000

Root relaxation: objective 1.328877e+01, 353 iterations, 0.01 seconds

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

     0     0   13.28877    0   82    8.00000   13.28877  66.1%     -    0s
     0     0   12.80803    0   86    8.00000   12.80803  60.1%     -    0s
     0     0   12.75766    0   85    8.00000   12.75766  59.5%     -    0s
     0     0   12.66830    0   87    8.00000   12.66830  58.4%     -    0s
     0     0   12.65663    0   86    8.00000   12.65663  58.2%     -    0s
     0     0   12.63570    0   86    8.00000   12.63570  57.9%     -    0s
     0     0   12.61941    0   86    8.00000   12.61941  57.7%     -    0s
     0     0   12.60798    0   86    8.00000   12.60798  57.6%     -    0s
     0     0   12.59189    0   86    8.00000   12.59189  57.4%     -    0s
     0     0   12.58343    0   87    8.00000   12.58343  57.3%     -    0s
     0     0   12.58101    0   86    8.00000   12.58101  57.3%     -    0s
     0     0   12.58080    0   87    8.00000   12.58080  57.3%     -    0s
H    0     0                       9.0000000   12.58080  39.8%     -    0s
     0     2   12.57961    0   87    9.00000   12.57961  39.8%     -    0s

Cutting planes:
  Clique: 77
  Zero half: 1

Explored 63 nodes (4697 simplex iterations) in 1.00 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%