Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:03 2012

Optimize a model with 1353 rows, 73 columns and 2706 nonzeros
Presolve removed 960 rows and 0 columns
Presolve time: 0.03s
Presolved: 393 rows, 73 columns, 2513 nonzeros
Variable types: 0 continuous, 73 integer (73 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.136712e+01, 184 iterations, 0.00 seconds

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

     0     0   11.36712    0   62    6.00000   11.36712  89.5%     -    0s
H    0     0                       7.0000000   11.36712  62.4%     -    0s
     0     0   10.89589    0   70    7.00000   10.89589  55.7%     -    0s
     0     0   10.88475    0   70    7.00000   10.88475  55.5%     -    0s
H    0     0                       8.0000000   10.88475  36.1%     -    0s
     0     0   10.87574    0   72    8.00000   10.87574  35.9%     -    0s
     0     0   10.87122    0   71    8.00000   10.87122  35.9%     -    0s
     0     0   10.86828    0   72    8.00000   10.86828  35.9%     -    0s
     0     0   10.83922    0   72    8.00000   10.83922  35.5%     -    0s
     0     0   10.80652    0   72    8.00000   10.80652  35.1%     -    0s
     0     0   10.79169    0   72    8.00000   10.79169  34.9%     -    0s
     0     0   10.79003    0   73    8.00000   10.79003  34.9%     -    0s
     0     0   10.78869    0   72    8.00000   10.78869  34.9%     -    0s
     0     0   10.78812    0   73    8.00000   10.78812  34.9%     -    0s
     0     2   10.78723    0   73    8.00000   10.78723  34.8%     -    0s

Cutting planes:
  Clique: 59
  Zero half: 4

Explored 42 nodes (2271 simplex iterations) in 0.47 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%