Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:52 2012

Optimize a model with 335 rows, 84 columns and 670 nonzeros
Presolve removed 93 rows and 0 columns
Presolve time: 0.00s
Presolved: 242 rows, 84 columns, 558 nonzeros
Variable types: 0 continuous, 84 integer (84 binary)
Found heuristic solution: objective 27.0000000

Root relaxation: objective 3.316667e+01, 134 iterations, 0.00 seconds

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

     0     0   33.16667    0   74   27.00000   33.16667  22.8%     -    0s
     0     0   32.25000    0   81   27.00000   32.25000  19.4%     -    0s
     0     0   31.79570    0   78   27.00000   31.79570  17.8%     -    0s
     0     0   31.50000    0   59   27.00000   31.50000  16.7%     -    0s
     0     0   31.39706    0   80   27.00000   31.39706  16.3%     -    0s
     0     0   31.36260    0   81   27.00000   31.36260  16.2%     -    0s
     0     0   31.35088    0   83   27.00000   31.35088  16.1%     -    0s
     0     0   31.35088    0   83   27.00000   31.35088  16.1%     -    0s
H    0     0                      28.0000000   31.35088  12.0%     -    0s
     0     2   31.35088    0   82   28.00000   31.35088  12.0%     -    0s
*    6     6               5      29.0000000   31.25000  7.76%  19.8    0s

Cutting planes:
  Gomory: 2
  Zero half: 34

Explored 39 nodes (1117 simplex iterations) in 0.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%