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

Optimize a model with 223 rows, 71 columns and 446 nonzeros
Presolve removed 61 rows and 4 columns
Presolve time: 0.00s
Presolved: 162 rows, 67 columns, 360 nonzeros
Variable types: 0 continuous, 67 integer (67 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 2.940000e+01, 94 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   58   23.00000   29.40000  27.8%     -    0s
H    0     0                      28.0000000   29.40000  5.00%     -    0s
     0     0 infeasible    0        28.00000   28.99997  3.57%     -    0s

Cutting planes:
  Zero half: 5

Explored 0 nodes (162 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%