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

Optimize a model with 242 rows, 69 columns and 484 nonzeros
Presolve removed 72 rows and 2 columns
Presolve time: 0.00s
Presolved: 170 rows, 67 columns, 385 nonzeros
Variable types: 0 continuous, 67 integer (67 binary)
Found heuristic solution: objective 22.0000000

Root relaxation: objective 2.877778e+01, 116 iterations, 0.00 seconds

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

     0     0   28.77778    0   66   22.00000   28.77778  30.8%     -    0s
H    0     0                      26.0000000   28.77778  10.7%     -    0s
H    0     0                      27.0000000   28.77778  6.58%     -    0s
     0     0   28.00000    0   65   27.00000   28.00000  3.70%     -    0s
     0     0   28.00000    0   61   27.00000   28.00000  3.70%     -    0s
     0     0     cutoff    0        27.00000   27.99997  3.70%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 50

Explored 0 nodes (217 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0%