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

Optimize a model with 276 rows, 73 columns and 552 nonzeros
Presolve removed 86 rows and 0 columns
Presolve time: 0.00s
Presolved: 190 rows, 73 columns, 447 nonzeros
Variable types: 0 continuous, 73 integer (73 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 2.897059e+01, 137 iterations, 0.00 seconds

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

     0     0   28.97059    0   71   23.00000   28.97059  26.0%     -    0s
H    0     0                      24.0000000   28.97059  20.7%     -    0s
     0     0   28.49448    0   71   24.00000   28.49448  18.7%     -    0s
H    0     0                      25.0000000   28.49448  14.0%     -    0s
     0     0   28.39533    0   73   25.00000   28.39533  13.6%     -    0s
     0     0   28.28637    0   73   25.00000   28.28637  13.1%     -    0s
     0     0   28.11268    0   73   25.00000   28.11268  12.5%     -    0s
H    0     0                      26.0000000   28.11268  8.13%     -    0s
     0     0   28.05493    0   72   26.00000   28.05493  7.90%     -    0s
     0     0   27.90941    0   72   26.00000   27.90941  7.34%     -    0s
     0     0   27.77456    0   73   26.00000   27.77456  6.83%     -    0s
     0     0   27.67140    0   73   26.00000   27.67140  6.43%     -    0s
     0     0   27.66667    0   73   26.00000   27.66667  6.41%     -    0s
     0     0   27.66667    0   67   26.00000   27.66667  6.41%     -    0s
     0     2   27.66667    0   66   26.00000   27.66667  6.41%     -    0s

Cutting planes:
  Zero half: 30

Explored 19 nodes (763 simplex iterations) in 0.06 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%