Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:22 2012

Optimize a model with 739 rows, 55 columns and 1478 nonzeros
Presolve removed 510 rows and 0 columns
Presolve time: 0.01s
Presolved: 229 rows, 55 columns, 1334 nonzeros
Variable types: 0 continuous, 55 integer (55 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 9.965510e+00, 109 iterations, 0.00 seconds

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

     0     0    9.96551    0   48    7.00000    9.96551  42.4%     -    0s
H    0     0                       8.0000000    9.96551  24.6%     -    0s
     0     0    9.61806    0   50    8.00000    9.61806  20.2%     -    0s
     0     0    9.55666    0   49    8.00000    9.55666  19.5%     -    0s
     0     0    9.51158    0   46    8.00000    9.51158  18.9%     -    0s
     0     0    9.41868    0   49    8.00000    9.41868  17.7%     -    0s
     0     0    9.40293    0   50    8.00000    9.40293  17.5%     -    0s
     0     0    9.39780    0   51    8.00000    9.39780  17.5%     -    0s
     0     0    9.39419    0   50    8.00000    9.39419  17.4%     -    0s
     0     0    9.39393    0   50    8.00000    9.39393  17.4%     -    0s
     0     2    9.38532    0   50    8.00000    9.38532  17.3%     -    0s

Cutting planes:
  Clique: 20
  Zero half: 6

Explored 5 nodes (417 simplex iterations) in 0.11 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%