Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:55 2012

Optimize a model with 391 rows, 87 columns and 782 nonzeros
Presolve removed 150 rows and 0 columns
Presolve time: 0.00s
Presolved: 241 rows, 87 columns, 606 nonzeros
Variable types: 0 continuous, 87 integer (87 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 3.163158e+01, 165 iterations, 0.00 seconds

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

     0     0   31.63158    0   78   23.00000   31.63158  37.5%     -    0s
H    0     0                      28.0000000   31.63158  13.0%     -    0s
     0     0   30.94366    0   78   28.00000   30.94366  10.5%     -    0s
     0     0   30.76646    0   84   28.00000   30.76646  9.88%     -    0s
     0     0   30.68728    0   78   28.00000   30.68728  9.60%     -    0s
     0     0   30.62985    0   84   28.00000   30.62985  9.39%     -    0s
H    0     0                      29.0000000   30.62985  5.62%     -    0s
     0     0   30.58824    0   79   29.00000   30.58824  5.48%     -    0s
     0     0   30.54579    0   81   29.00000   30.54579  5.33%     -    0s
     0     0   30.49775    0   82   29.00000   30.49775  5.16%     -    0s
     0     0   30.45269    0   83   29.00000   30.45269  5.01%     -    0s
     0     0   30.42653    0   83   29.00000   30.42653  4.92%     -    0s
     0     0   30.39310    0   83   29.00000   30.39310  4.80%     -    0s
     0     0   30.39241    0   83   29.00000   30.39241  4.80%     -    0s
     0     0   30.39241    0   83   29.00000   30.39241  4.80%     -    0s
     0     2   30.39020    0   83   29.00000   30.39020  4.79%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 2
  Zero half: 26

Explored 7 nodes (697 simplex iterations) in 0.07 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%