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

Optimize a model with 356 rows, 84 columns and 712 nonzeros
Presolve removed 96 rows and 0 columns
Presolve time: 0.00s
Presolved: 260 rows, 84 columns, 600 nonzeros
Variable types: 0 continuous, 84 integer (84 binary)
Found heuristic solution: objective 26.0000000

Root relaxation: objective 3.200000e+01, 146 iterations, 0.00 seconds

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

     0     0   32.00000    0   62   26.00000   32.00000  23.1%     -    0s
     0     0   31.82759    0   81   26.00000   31.82759  22.4%     -    0s
H    0     0                      27.0000000   31.82759  17.9%     -    0s
     0     0   31.00000    0   79   27.00000   31.00000  14.8%     -    0s
H    0     0                      29.0000000   31.00000  6.90%     -    0s
     0     0   30.85824    0   83   29.00000   30.85824  6.41%     -    0s
     0     0   30.68067    0   82   29.00000   30.68067  5.80%     -    0s
     0     0   30.47087    0   81   29.00000   30.47087  5.07%     -    0s
     0     0   30.37879    0   82   29.00000   30.37879  4.75%     -    0s
     0     0   30.31333    0   83   29.00000   30.31333  4.53%     -    0s
     0     0   30.22845    0   83   29.00000   30.22845  4.24%     -    0s
     0     0   30.16949    0   80   29.00000   30.16949  4.03%     -    0s
     0     0   30.16947    0   80   29.00000   30.16947  4.03%     -    0s
     0     0   30.16947    0   80   29.00000   30.16947  4.03%     -    0s
     0     2   30.16947    0   80   29.00000   30.16947  4.03%     -    0s

Cutting planes:
  Zero half: 30

Explored 5 nodes (622 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%