Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:44 2012

Optimize a model with 259 rows, 71 columns and 518 nonzeros
Presolve removed 68 rows and 0 columns
Presolve time: 0.00s
Presolved: 191 rows, 71 columns, 441 nonzeros
Variable types: 0 continuous, 71 integer (71 binary)
Found heuristic solution: objective 20.0000000

Root relaxation: objective 2.800000e+01, 153 iterations, 0.00 seconds

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

     0     0   28.00000    0   63   20.00000   28.00000  40.0%     -    0s
H    0     0                      23.0000000   28.00000  21.7%     -    0s
     0     0   27.33333    0   71   23.00000   27.33333  18.8%     -    0s
     0     0   26.66667    0   68   23.00000   26.66667  15.9%     -    0s
     0     0   26.50000    0   65   23.00000   26.50000  15.2%     -    0s
     0     0   26.40000    0   66   23.00000   26.40000  14.8%     -    0s
     0     0   26.33333    0   68   23.00000   26.33333  14.5%     -    0s
     0     0   26.20000    0   69   23.00000   26.20000  13.9%     -    0s
     0     0   26.09302    0   70   23.00000   26.09302  13.4%     -    0s
     0     0   26.09272    0   70   23.00000   26.09272  13.4%     -    0s
     0     0   26.09272    0   69   23.00000   26.09272  13.4%     -    0s
H    0     0                      24.0000000   26.09272  8.72%     -    0s
     0     2   26.08824    0   69   24.00000   26.08824  8.70%     -    0s

Cutting planes:
  Zero half: 33

Explored 26 nodes (921 simplex iterations) in 0.05 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%