Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:24 2012

Optimize a model with 765 rows, 57 columns and 1530 nonzeros
Presolve removed 517 rows and 0 columns
Presolve time: 0.01s
Presolved: 248 rows, 57 columns, 1360 nonzeros
Variable types: 0 continuous, 57 integer (57 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.041924e+01, 124 iterations, 0.00 seconds

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

     0     0   10.41924    0   49    6.00000   10.41924  73.7%     -    0s
H    0     0                       7.0000000   10.41924  48.8%     -    0s
H    0     0                       8.0000000   10.41924  30.2%     -    0s
     0     0   10.00343    0   55    8.00000   10.00343  25.0%     -    0s
     0     0    9.89532    0   55    8.00000    9.89532  23.7%     -    0s
     0     0    9.86868    0   55    8.00000    9.86868  23.4%     -    0s
     0     0    9.81388    0   54    8.00000    9.81388  22.7%     -    0s
     0     0    9.80155    0   56    8.00000    9.80155  22.5%     -    0s
     0     0    9.78814    0   56    8.00000    9.78814  22.4%     -    0s
     0     0    9.78535    0   56    8.00000    9.78535  22.3%     -    0s
     0     0    9.78457    0   56    8.00000    9.78457  22.3%     -    0s
     0     2    9.78431    0   56    8.00000    9.78431  22.3%     -    0s

Cutting planes:
  Clique: 23
  Zero half: 4

Explored 9 nodes (666 simplex iterations) in 0.13 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%