Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:51 2012

Optimize a model with 326 rows, 83 columns and 652 nonzeros
Presolve removed 104 rows and 1 columns
Presolve time: 0.00s
Presolved: 222 rows, 82 columns, 510 nonzeros
Variable types: 0 continuous, 82 integer (82 binary)
Found heuristic solution: objective 26.0000000

Root relaxation: objective 3.255172e+01, 155 iterations, 0.00 seconds

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

     0     0   32.55172    0   78   26.00000   32.55172  25.2%     -    0s
H    0     0                      27.0000000   32.55172  20.6%     -    0s
H    0     0                      28.0000000   32.55172  16.3%     -    0s
     0     0   31.68142    0   78   28.00000   31.68142  13.1%     -    0s
H    0     0                      29.0000000   31.68142  9.25%     -    0s
     0     0   31.36134    0   81   29.00000   31.36134  8.14%     -    0s
     0     0   31.23765    0   82   29.00000   31.23765  7.72%     -    0s
     0     0   31.18788    0   81   29.00000   31.18788  7.54%     -    0s
     0     0   31.07865    0   82   29.00000   31.07865  7.17%     -    0s
     0     0   30.93793    0   80   29.00000   30.93793  6.68%     -    0s
     0     0   30.84324    0   78   29.00000   30.84324  6.36%     -    0s
     0     0   30.79355    0   79   29.00000   30.79355  6.18%     -    0s
     0     0   30.79355    0   81   29.00000   30.79355  6.18%     -    0s
     0     0   30.79355    0   80   29.00000   30.79355  6.18%     -    0s
     0     2   30.79355    0   80   29.00000   30.79355  6.18%     -    0s

Cutting planes:
  Clique: 1
  Zero half: 27

Explored 22 nodes (844 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%