Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:54 2012

Optimize a model with 380 rows, 86 columns and 760 nonzeros
Presolve removed 137 rows and 0 columns
Presolve time: 0.00s
Presolved: 243 rows, 86 columns, 600 nonzeros
Variable types: 0 continuous, 86 integer (86 binary)
Found heuristic solution: objective 29.0000000

Root relaxation: objective 3.228571e+01, 146 iterations, 0.00 seconds

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

     0     0   32.28571    0   77   29.00000   32.28571  11.3%     -    0s
     0     0   31.76190    0   72   29.00000   31.76190  9.52%     -    0s
     0     0   31.39740    0   77   29.00000   31.39740  8.27%     -    0s
     0     0   31.32177    0   79   29.00000   31.32177  8.01%     -    0s
     0     0   31.25517    0   76   29.00000   31.25517  7.78%     -    0s
     0     0   31.24194    0   77   29.00000   31.24194  7.73%     -    0s
     0     0   31.22732    0   80   29.00000   31.22732  7.68%     -    0s
     0     0   31.22691    0   81   29.00000   31.22691  7.68%     -    0s
     0     0   31.22691    0   81   29.00000   31.22691  7.68%     -    0s
     0     2   31.21702    0   81   29.00000   31.21702  7.64%     -    0s
*    4     4               3      30.0000000   31.21702  4.06%  32.0    0s

Cutting planes:
  Gomory: 1
  Clique: 1
  Zero half: 21

Explored 9 nodes (572 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+01, best bound 3.000000000000e+01, gap 0.0%