Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:53 2012

Optimize a model with 373 rows, 85 columns and 746 nonzeros
Presolve removed 119 rows and 0 columns
Presolve time: 0.00s
Presolved: 254 rows, 85 columns, 615 nonzeros
Variable types: 0 continuous, 85 integer (85 binary)
Found heuristic solution: objective 27.0000000

Root relaxation: objective 3.203571e+01, 158 iterations, 0.00 seconds

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

     0     0   32.03571    0   74   27.00000   32.03571  18.7%     -    0s
     0     0   31.12591    0   82   27.00000   31.12591  15.3%     -    0s
     0     0   30.74744    0   85   27.00000   30.74744  13.9%     -    0s
     0     0   30.33333    0   75   27.00000   30.33333  12.3%     -    0s
     0     0   30.28571    0   82   27.00000   30.28571  12.2%     -    0s
     0     0   30.17639    0   85   27.00000   30.17639  11.8%     -    0s
     0     0   30.03402    0   83   27.00000   30.03402  11.2%     -    0s
     0     0   29.98909    0   83   27.00000   29.98909  11.1%     -    0s
     0     0   29.96110    0   83   27.00000   29.96110  11.0%     -    0s
     0     0   29.95415    0   83   27.00000   29.95415  10.9%     -    0s
     0     0   29.95415    0   83   27.00000   29.95415  10.9%     -    0s
     0     2   29.93846    0   83   27.00000   29.93846  10.9%     -    0s
*    9     5               8      28.0000000   29.93846  6.92%  21.6    0s

Cutting planes:
  Clique: 2
  Zero half: 47

Explored 19 nodes (983 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.800000000000e+01, best bound 2.800000000000e+01, gap 0.0%