Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:30 2012

Optimize a model with 905 rows, 61 columns and 1810 nonzeros
Presolve removed 622 rows and 0 columns
Presolve time: 0.02s
Presolved: 283 rows, 61 columns, 1702 nonzeros
Variable types: 0 continuous, 61 integer (61 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.054777e+01, 116 iterations, 0.00 seconds

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

     0     0   10.54777    0   52    6.00000   10.54777  75.8%     -    0s
H    0     0                       7.0000000   10.54777  50.7%     -    0s
     0     0   10.12729    0   55    7.00000   10.12729  44.7%     -    0s
H    0     0                       8.0000000   10.12729  26.6%     -    0s
     0     0   10.08975    0   57    8.00000   10.08975  26.1%     -    0s
     0     0   10.03279    0   55    8.00000   10.03279  25.4%     -    0s
     0     0   10.02081    0   54    8.00000   10.02081  25.3%     -    0s
     0     0   10.01255    0   55    8.00000   10.01255  25.2%     -    0s
     0     0   10.00880    0   55    8.00000   10.00880  25.1%     -    0s
     0     0   10.00516    0   56    8.00000   10.00516  25.1%     -    0s
     0     0   10.00079    0   56    8.00000   10.00079  25.0%     -    0s
     0     0    9.99820    0   57    8.00000    9.99820  25.0%     -    0s
     0     0    9.99805    0   57    8.00000    9.99805  25.0%     -    0s
     0     2    9.99702    0   57    8.00000    9.99702  25.0%     -    0s

Cutting planes:
  Clique: 25
  Zero half: 6

Explored 15 nodes (801 simplex iterations) in 0.17 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%