Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:45 2012

Optimize a model with 240 rows, 73 columns and 480 nonzeros
Presolve removed 83 rows and 4 columns
Presolve time: 0.00s
Presolved: 157 rows, 69 columns, 362 nonzeros
Variable types: 0 continuous, 69 integer (69 binary)
Found heuristic solution: objective 24.0000000

Root relaxation: objective 2.900000e+01, 90 iterations, 0.00 seconds

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

     0     0   29.00000    0   50   24.00000   29.00000  20.8%     -    0s
     0     0   28.00000    0   46   24.00000   28.00000  16.7%     -    0s
H    0     0                      26.0000000   28.00000  7.69%     -    0s
H    0     0                      27.0000000   28.00000  3.70%     -    0s
     0     0   28.00000    0   65   27.00000   28.00000  3.70%     -    0s
     0     0   28.00000    0   38   27.00000   28.00000  3.70%     -    0s

Cutting planes:
  Zero half: 23

Explored 0 nodes (308 simplex iterations) in 0.01 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%