Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:45:52 2012

Optimize a model with 1971 rows, 89 columns and 3942 nonzeros
Presolve removed 1405 rows and 0 columns
Presolve time: 0.05s
Presolved: 566 rows, 89 columns, 3727 nonzeros
Variable types: 0 continuous, 89 integer (89 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.322928e+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   13.22928    0   84    6.00000   13.22928   120%     -    0s
H    0     0                       8.0000000   13.22928  65.4%     -    0s
     0     0   12.82333    0   88    8.00000   12.82333  60.3%     -    0s
     0     0   12.74555    0   89    8.00000   12.74555  59.3%     -    0s
     0     0   12.66243    0   88    8.00000   12.66243  58.3%     -    0s
     0     0   12.65705    0   87    8.00000   12.65705  58.2%     -    0s
     0     0   12.63004    0   89    8.00000   12.63004  57.9%     -    0s
     0     0   12.61653    0   88    8.00000   12.61653  57.7%     -    0s
     0     0   12.61465    0   89    8.00000   12.61465  57.7%     -    0s
     0     0   12.61375    0   89    8.00000   12.61375  57.7%     -    0s
     0     2   12.61243    0   89    8.00000   12.61243  57.7%     -    0s
*  165     8               5       9.0000000   10.33077  14.8%  50.6    0s

Cutting planes:
  Clique: 54
  Zero half: 4

Explored 174 nodes (9181 simplex iterations) in 0.95 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%