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

Optimize a model with 318 rows, 82 columns and 636 nonzeros
Presolve removed 91 rows and 0 columns
Presolve time: 0.00s
Presolved: 227 rows, 82 columns, 525 nonzeros
Variable types: 0 continuous, 82 integer (82 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 3.184615e+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   31.84615    0   80   23.00000   31.84615  38.5%     -    0s
H    0     0                      25.0000000   31.84615  27.4%     -    0s
     0     0   31.29630    0   78   25.00000   31.29630  25.2%     -    0s
H    0     0                      26.0000000   31.29630  20.4%     -    0s
     0     0   30.78261    0   79   26.00000   30.78261  18.4%     -    0s
     0     0   30.35955    0   79   26.00000   30.35955  16.8%     -    0s
     0     0   30.24651    0   81   26.00000   30.24651  16.3%     -    0s
     0     0   30.15964    0   81   26.00000   30.15964  16.0%     -    0s
     0     0   30.10145    0   79   26.00000   30.10145  15.8%     -    0s
     0     0   30.04762    0   78   26.00000   30.04762  15.6%     -    0s
     0     0   30.01533    0   81   26.00000   30.01533  15.4%     -    0s
     0     0   29.98384    0   80   26.00000   29.98384  15.3%     -    0s
     0     0   29.95708    0   80   26.00000   29.95708  15.2%     -    0s
     0     0   29.95708    0   80   26.00000   29.95708  15.2%     -    0s
     0     2   29.95637    0   80   26.00000   29.95637  15.2%     -    0s
*    5     5               4      27.0000000   29.95227  10.9%  32.0    0s

Cutting planes:
  Gomory: 1
  Zero half: 52

Explored 75 nodes (2220 simplex iterations) in 0.10 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%