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

Optimize a model with 389 rows, 84 columns and 778 nonzeros
Presolve removed 150 rows and 3 columns
Presolve time: 0.00s
Presolved: 239 rows, 81 columns, 584 nonzeros
Variable types: 0 continuous, 81 integer (81 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 3.131034e+01, 151 iterations, 0.00 seconds

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

     0     0   31.31034    0   75   23.00000   31.31034  36.1%     -    0s
H    0     0                      26.0000000   31.31034  20.4%     -    0s
     0     0   30.57778    0   77   26.00000   30.57778  17.6%     -    0s
H    0     0                      27.0000000   30.57778  13.3%     -    0s
     0     0   30.33333    0   77   27.00000   30.33333  12.3%     -    0s
     0     0   30.12051    0   78   27.00000   30.12051  11.6%     -    0s
     0     0   29.89697    0   79   27.00000   29.89697  10.7%     -    0s
     0     0   29.75697    0   78   27.00000   29.75697  10.2%     -    0s
     0     0   29.70910    0   77   27.00000   29.70910  10.0%     -    0s
     0     0   29.65787    0   79   27.00000   29.65787  9.84%     -    0s
     0     0   29.65784    0   80   27.00000   29.65784  9.84%     -    0s
     0     2   29.65759    0   79   27.00000   29.65759  9.84%     -    0s

Cutting planes:
  Clique: 1
  Zero half: 40

Explored 39 nodes (1438 simplex iterations) in 0.08 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0%