Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:29 2012

Optimize a model with 910 rows, 60 columns and 1820 nonzeros
Presolve removed 636 rows and 0 columns
Presolve time: 0.02s
Presolved: 274 rows, 60 columns, 1668 nonzeros
Variable types: 0 continuous, 60 integer (60 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.053817e+01, 107 iterations, 0.00 seconds

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

     0     0   10.53817    0   52    7.00000   10.53817  50.5%     -    0s
     0     0   10.00051    0   53    7.00000   10.00051  42.9%     -    0s
H    0     0                       8.0000000   10.00051  25.0%     -    0s
     0     0    9.90755    0   57    8.00000    9.90755  23.8%     -    0s
     0     0    9.84376    0   56    8.00000    9.84376  23.0%     -    0s
     0     0    9.80874    0   57    8.00000    9.80874  22.6%     -    0s
     0     0    9.77057    0   56    8.00000    9.77057  22.1%     -    0s
     0     0    9.76761    0   57    8.00000    9.76761  22.1%     -    0s
     0     0    9.76674    0   57    8.00000    9.76674  22.1%     -    0s
     0     2    9.76351    0   57    8.00000    9.76351  22.0%     -    0s

Cutting planes:
  Clique: 37
  Zero half: 2

Explored 13 nodes (648 simplex iterations) in 0.12 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%