Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:45 2012

Optimize a model with 258 rows, 72 columns and 516 nonzeros
Presolve removed 69 rows and 0 columns
Presolve time: 0.00s
Presolved: 189 rows, 72 columns, 427 nonzeros
Variable types: 0 continuous, 72 integer (72 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 2.950000e+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   29.50000    0   55   25.00000   29.50000  18.0%     -    0s
     0     0   28.84615    0   68   25.00000   28.84615  15.4%     -    0s
     0     0   28.25000    0   63   25.00000   28.25000  13.0%     -    0s
     0     0   27.88889    0   62   25.00000   27.88889  11.6%     -    0s
     0     0   27.75000    0   63   25.00000   27.75000  11.0%     -    0s
     0     0   27.73196    0   68   25.00000   27.73196  10.9%     -    0s
     0     0   27.71698    0   66   25.00000   27.71698  10.9%     -    0s
     0     0   27.66052    0   69   25.00000   27.66052  10.6%     -    0s
     0     0   27.61562    0   70   25.00000   27.61562  10.5%     -    0s
H    0     0                      26.0000000   27.61562  6.21%     -    0s
     0     0   27.53882    0   70   26.00000   27.53882  5.92%     -    0s
     0     0   27.53882    0   69   26.00000   27.53882  5.92%     -    0s
     0     2   27.53882    0   69   26.00000   27.53882  5.92%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 31

Explored 26 nodes (651 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.600000000000e+01, best bound 2.600000000000e+01, gap 0.0%