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 113 rows and 0 columns
Presolve time: 0.00s
Presolved: 243 rows, 84 columns, 576 nonzeros
Variable types: 0 continuous, 84 integer (84 binary)
Found heuristic solution: objective 24.0000000

Root relaxation: objective 3.094444e+01, 141 iterations, 0.00 seconds

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

     0     0   30.94444    0   78   24.00000   30.94444  28.9%     -    0s
H    0     0                      25.0000000   30.94444  23.8%     -    0s
     0     0   30.00000    0   80   25.00000   30.00000  20.0%     -    0s
H    0     0                      26.0000000   30.00000  15.4%     -    0s
     0     0   30.00000    0   64   26.00000   30.00000  15.4%     -    0s
     0     0   30.00000    0   75   26.00000   30.00000  15.4%     -    0s
     0     0   30.00000    0   76   26.00000   30.00000  15.4%     -    0s
     0     0   30.00000    0   76   26.00000   30.00000  15.4%     -    0s
H    0     0                      27.0000000   30.00000  11.1%     -    0s
     0     2   30.00000    0   76   27.00000   30.00000  11.1%     -    0s

Cutting planes:
  Gomory: 2
  Clique: 1
  Zero half: 17

Explored 66 nodes (1997 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%