Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:00 2012

Optimize a model with 1291 rows, 72 columns and 2582 nonzeros
Presolve removed 913 rows and 0 columns
Presolve time: 0.03s
Presolved: 378 rows, 72 columns, 2291 nonzeros
Variable types: 0 continuous, 72 integer (72 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.174876e+01, 221 iterations, 0.00 seconds

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

     0     0   11.74876    0   64    7.00000   11.74876  67.8%     -    0s
     0     0   11.36764    0   70    7.00000   11.36764  62.4%     -    0s
H    0     0                       8.0000000   11.36764  42.1%     -    0s
     0     0   11.30840    0   69    8.00000   11.30840  41.4%     -    0s
     0     0   11.25995    0   72    8.00000   11.25995  40.7%     -    0s
     0     0   11.23875    0   72    8.00000   11.23875  40.5%     -    0s
     0     0   11.22458    0   71    8.00000   11.22458  40.3%     -    0s
     0     0   11.20294    0   71    8.00000   11.20294  40.0%     -    0s
     0     0   11.20012    0   71    8.00000   11.20012  40.0%     -    0s
     0     0   11.19498    0   72    8.00000   11.19498  39.9%     -    0s
     0     0   11.19442    0   72    8.00000   11.19442  39.9%     -    0s
     0     2   11.19373    0   72    8.00000   11.19373  39.9%     -    0s

Cutting planes:
  Clique: 49
  Zero half: 4

Explored 41 nodes (2440 simplex iterations) in 0.36 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%