Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:42 2012

Optimize a model with 196 rows, 65 columns and 392 nonzeros
Presolve removed 54 rows and 2 columns
Presolve time: 0.00s
Presolved: 142 rows, 63 columns, 319 nonzeros
Variable types: 0 continuous, 63 integer (63 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 2.750000e+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   27.50000    0   39   23.00000   27.50000  19.6%     -    0s
H    0     0                      24.0000000   27.50000  14.6%     -    0s
H    0     0                      25.0000000   27.50000  10.0%     -    0s
     0     0   26.80000    0   57   25.00000   26.80000  7.20%     -    0s
     0     0   26.50000    0   43   25.00000   26.50000  6.00%     -    0s
     0     0   26.50000    0   39   25.00000   26.50000  6.00%     -    0s
     0     0   26.25000    0   47   25.00000   26.25000  5.00%     -    0s
     0     0   26.05714    0   50   25.00000   26.05714  4.23%     -    0s
     0     0     cutoff    0        25.00000   25.99997  4.00%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 29

Explored 0 nodes (251 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%