Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:46 2012

Optimize a model with 288 rows, 76 columns and 576 nonzeros
Presolve removed 110 rows and 3 columns
Presolve time: 0.00s
Presolved: 178 rows, 73 columns, 419 nonzeros
Variable types: 0 continuous, 73 integer (73 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 2.940000e+01, 124 iterations, 0.00 seconds

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

     0     0   29.40000    0   54   25.00000   29.40000  17.6%     -    0s
H    0     0                      28.0000000   29.40000  5.00%     -    0s
     0     0     cutoff    0        28.00000   28.99997  3.57%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 27

Explored 0 nodes (204 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.800000000000e+01, best bound 2.800000000000e+01, gap 0.0%