Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:43 2012

Optimize a model with 217 rows, 70 columns and 434 nonzeros
Presolve removed 68 rows and 6 columns
Presolve time: 0.00s
Presolved: 149 rows, 64 columns, 329 nonzeros
Variable types: 0 continuous, 64 integer (64 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 2.940000e+01, 88 iterations, 0.00 seconds

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

     0     0   29.40000    0   58   25.00000   29.40000  17.6%     -    0s
H    0     0                      26.0000000   29.40000  13.1%     -    0s
     0     0   29.00000    0   61   26.00000   29.00000  11.5%     -    0s
H    0     0                      27.0000000   29.00000  7.41%     -    0s
     0     0   28.88889    0   63   27.00000   28.88889  7.00%     -    0s
     0     0   28.50000    0   52   27.00000   28.50000  5.56%     -    0s
     0     0   28.50000    0   43   27.00000   28.50000  5.56%     -    0s
     0     0   28.50000    0   56   27.00000   28.50000  5.56%     -    0s
     0     0   28.50000    0   49   27.00000   28.50000  5.56%     -    0s
H    0     0                      28.0000000   28.50000  1.79%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 8

Explored 0 nodes (304 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.800000000000e+01, best bound 2.800000000000e+01, gap 0.0%