Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:43 2012

Optimize a model with 254 rows, 68 columns and 508 nonzeros
Presolve removed 86 rows and 0 columns
Presolve time: 0.00s
Presolved: 168 rows, 68 columns, 400 nonzeros
Variable types: 0 continuous, 68 integer (68 binary)
Found heuristic solution: objective 21.0000000

Root relaxation: objective 2.571429e+01, 127 iterations, 0.00 seconds

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

     0     0   25.71429    0   60   21.00000   25.71429  22.4%     -    0s
H    0     0                      22.0000000   25.71429  16.9%     -    0s
H    0     0                      23.0000000   25.71429  11.8%     -    0s
     0     0   25.00000    0   61   23.00000   25.00000  8.70%     -    0s
     0     0   25.00000    0   60   23.00000   25.00000  8.70%     -    0s
     0     0   25.00000    0   64   23.00000   25.00000  8.70%     -    0s
     0     0   25.00000    0   63   23.00000   25.00000  8.70%     -    0s
H    0     0                      24.0000000   25.00000  4.17%     -    0s
     0     2   25.00000    0   48   24.00000   25.00000  4.17%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 11

Explored 1 nodes (422 simplex iterations) in 0.03 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%