Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:57 2012

Optimize a model with 1232 rows, 71 columns and 2464 nonzeros
Presolve removed 879 rows and 0 columns
Presolve time: 0.02s
Presolved: 353 rows, 71 columns, 2129 nonzeros
Variable types: 0 continuous, 71 integer (71 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.134895e+01, 164 iterations, 0.01 seconds

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

     0     0   11.34895    0   66    6.00000   11.34895  89.1%     -    0s
H    0     0                       7.0000000   11.34895  62.1%     -    0s
H    0     0                       8.0000000   11.34895  41.9%     -    0s
     0     0   10.95121    0   68    8.00000   10.95121  36.9%     -    0s
     0     0   10.92702    0   69    8.00000   10.92702  36.6%     -    0s
     0     0   10.92124    0   69    8.00000   10.92124  36.5%     -    0s
     0     0   10.90834    0   69    8.00000   10.90834  36.4%     -    0s
     0     0   10.90454    0   69    8.00000   10.90454  36.3%     -    0s
     0     2   10.90450    0   69    8.00000   10.90450  36.3%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 27
  Zero half: 9

Explored 44 nodes (2308 simplex iterations) in 0.24 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%