Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:45:32 2012

Optimize a model with 1909 rows, 87 columns and 3818 nonzeros
Presolve removed 1367 rows and 0 columns
Presolve time: 0.06s
Presolved: 542 rows, 87 columns, 3611 nonzeros
Variable types: 0 continuous, 87 integer (87 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.267920e+01, 327 iterations, 0.01 seconds

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

     0     0   12.67920    0   80    7.00000   12.67920  81.1%     -    0s
H    0     0                       8.0000000   12.67920  58.5%     -    0s
     0     0   12.36450    0   84    8.00000   12.36450  54.6%     -    0s
     0     0   12.28598    0   84    8.00000   12.28598  53.6%     -    0s
     0     0   12.23630    0   84    8.00000   12.23630  53.0%     -    0s
     0     0   12.21895    0   86    8.00000   12.21895  52.7%     -    0s
     0     0   12.21070    0   85    8.00000   12.21070  52.6%     -    0s
     0     0   12.20078    0   86    8.00000   12.20078  52.5%     -    0s
     0     0   12.19991    0   86    8.00000   12.19991  52.5%     -    0s
     0     0   12.19902    0   85    8.00000   12.19902  52.5%     -    0s
     0     0   12.19800    0   85    8.00000   12.19800  52.5%     -    0s
     0     2   12.19797    0   85    8.00000   12.19797  52.5%     -    0s

Cutting planes:
  Clique: 58
  Zero half: 5

Explored 143 nodes (7657 simplex iterations) in 0.97 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%