Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:50 2012

Optimize a model with 344 rows, 82 columns and 688 nonzeros
Presolve removed 112 rows and 0 columns
Presolve time: 0.00s
Presolved: 232 rows, 82 columns, 559 nonzeros
Variable types: 0 continuous, 82 integer (82 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 3.119444e+01, 149 iterations, 0.00 seconds

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

     0     0   31.19444    0   78   25.00000   31.19444  24.8%     -    0s
H    0     0                      26.0000000   31.19444  20.0%     -    0s
     0     0   30.30767    0   78   26.00000   30.30767  16.6%     -    0s
H    0     0                      27.0000000   30.30767  12.3%     -    0s
     0     0   30.05507    0   77   27.00000   30.05507  11.3%     -    0s
H    0     0                      28.0000000   30.05507  7.34%     -    0s
     0     0   29.80439    0   78   28.00000   29.80439  6.44%     -    0s
     0     0   29.72152    0   78   28.00000   29.72152  6.15%     -    0s
     0     0   29.70004    0   79   28.00000   29.70004  6.07%     -    0s
     0     0   29.70004    0   79   28.00000   29.70004  6.07%     -    0s
     0     2   29.69593    0   79   28.00000   29.69593  6.06%     -    0s

Cutting planes:
  Gomory: 2
  Clique: 1
  Zero half: 24

Explored 7 nodes (643 simplex iterations) in 0.05 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%