Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:41 2012

Optimize a model with 217 rows, 64 columns and 434 nonzeros
Presolve removed 62 rows and 0 columns
Presolve time: 0.00s
Presolved: 155 rows, 64 columns, 356 nonzeros
Variable types: 0 continuous, 64 integer (64 binary)
Found heuristic solution: objective 20.0000000

Root relaxation: objective 2.591667e+01, 91 iterations, 0.00 seconds

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

     0     0   25.91667    0   59   20.00000   25.91667  29.6%     -    0s
H    0     0                      23.0000000   25.91667  12.7%     -    0s
     0     0   25.31250    0   58   23.00000   25.31250  10.1%     -    0s
     0     0   25.00000    0   56   23.00000   25.00000  8.70%     -    0s
     0     0   25.00000    0   48   23.00000   25.00000  8.70%     -    0s
     0     0   24.87500    0   47   23.00000   24.87500  8.15%     -    0s
     0     0   24.83333    0   47   23.00000   24.83333  7.97%     -    0s
     0     0   24.83333    0   59   23.00000   24.83333  7.97%     -    0s
     0     0   24.83333    0   51   23.00000   24.83333  7.97%     -    0s
H    0     0                      24.0000000   24.83333  3.47%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 1
  Zero half: 9

Explored 0 nodes (263 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%