Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:44 2012

Optimize a model with 249 rows, 72 columns and 498 nonzeros
Presolve removed 82 rows and 3 columns
Presolve time: 0.00s
Presolved: 167 rows, 69 columns, 381 nonzeros
Variable types: 0 continuous, 69 integer (69 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 2.980000e+01, 101 iterations, 0.00 seconds

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

     0     0   29.80000    0   58   25.00000   29.80000  19.2%     -    0s
H    0     0                      26.0000000   29.80000  14.6%     -    0s
     0     0   28.75000    0   61   26.00000   28.75000  10.6%     -    0s
H    0     0                      27.0000000   28.75000  6.48%     -    0s
     0     0   28.75000    0   57   27.00000   28.75000  6.48%     -    0s
H    0     0                      28.0000000   28.75000  2.68%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 11

Explored 0 nodes (202 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%