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

Optimize a model with 357 rows, 83 columns and 714 nonzeros
Presolve removed 135 rows and 3 columns
Presolve time: 0.00s
Presolved: 222 rows, 80 columns, 529 nonzeros
Variable types: 0 continuous, 80 integer (80 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 3.082857e+01, 130 iterations, 0.00 seconds

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

     0     0   30.82857    0   78   23.00000   30.82857  34.0%     -    0s
H    0     0                      24.0000000   30.82857  28.5%     -    0s
     0     0   29.98656    0   76   24.00000   29.98656  24.9%     -    0s
H    0     0                      25.0000000   29.98656  19.9%     -    0s
H    0     0                      26.0000000   29.98656  15.3%     -    0s
     0     0   29.79822    0   76   26.00000   29.79822  14.6%     -    0s
     0     0   29.70487    0   79   26.00000   29.70487  14.2%     -    0s
     0     0   29.63000    0   77   26.00000   29.63000  14.0%     -    0s
     0     0   29.61091    0   76   26.00000   29.61091  13.9%     -    0s
H    0     0                      27.0000000   29.61091  9.67%     -    0s
     0     0   29.60313    0   78   27.00000   29.60313  9.64%     -    0s
     0     0   29.60313    0   78   27.00000   29.60313  9.64%     -    0s
     0     2   29.60269    0   78   27.00000   29.60269  9.64%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 34

Explored 35 nodes (1188 simplex iterations) in 0.07 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%