Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:53 2012

Optimize a model with 1225 rows, 70 columns and 2450 nonzeros
Presolve removed 875 rows and 0 columns
Presolve time: 0.03s
Presolved: 350 rows, 70 columns, 2163 nonzeros
Variable types: 0 continuous, 70 integer (70 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.124590e+01, 175 iterations, 0.01 seconds

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

     0     0   11.24590    0   65    6.00000   11.24590  87.4%     -    0s
H    0     0                       7.0000000   11.24590  60.7%     -    0s
H    0     0                       8.0000000   11.24590  40.6%     -    0s
     0     0   10.95204    0   68    8.00000   10.95204  36.9%     -    0s
     0     0   10.90990    0   68    8.00000   10.90990  36.4%     -    0s
     0     0   10.88536    0   67    8.00000   10.88536  36.1%     -    0s
     0     0   10.86957    0   68    8.00000   10.86957  35.9%     -    0s
     0     0   10.85679    0   67    8.00000   10.85679  35.7%     -    0s
     0     0   10.85627    0   68    8.00000   10.85627  35.7%     -    0s
     0     0   10.85627    0   68    8.00000   10.85627  35.7%     -    0s
     0     2   10.85613    0   68    8.00000   10.85613  35.7%     -    0s

Cutting planes:
  Clique: 27
  Zero half: 11

Explored 41 nodes (1821 simplex iterations) in 0.23 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%