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

Optimize a model with 242 rows, 71 columns and 484 nonzeros
Presolve removed 86 rows and 3 columns
Presolve time: 0.00s
Presolved: 156 rows, 68 columns, 359 nonzeros
Variable types: 0 continuous, 68 integer (68 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 2.854545e+01, 117 iterations, 0.00 seconds

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

     0     0   28.54545    0   59   25.00000   28.54545  14.2%     -    0s
H    0     0                      27.0000000   28.54545  5.72%     -    0s
     0     0   28.00000    0   52   27.00000   28.00000  3.70%     -    0s
     0     0 infeasible    0        27.00000   27.99997  3.70%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 1
  Zero half: 23

Explored 0 nodes (199 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%