Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:56 2012

Optimize a model with 367 rows, 88 columns and 734 nonzeros
Presolve removed 129 rows and 2 columns
Presolve time: 0.00s
Presolved: 238 rows, 86 columns, 574 nonzeros
Variable types: 0 continuous, 86 integer (86 binary)
Found heuristic solution: objective 28.0000000

Root relaxation: objective 3.466667e+01, 143 iterations, 0.00 seconds

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

     0     0   34.66667    0   78   28.00000   34.66667  23.8%     -    0s
H    0     0                      30.0000000   34.66667  15.6%     -    0s
     0     0   34.00000    0   81   30.00000   34.00000  13.3%     -    0s
     0     0   34.00000    0   82   30.00000   34.00000  13.3%     -    0s
     0     0   34.00000    0   75   30.00000   34.00000  13.3%     -    0s
     0     2   34.00000    0   75   30.00000   34.00000  13.3%     -    0s
H   17     3                      31.0000000   33.90000  9.35%  23.4    0s

Cutting planes:
  Gomory: 2
  Zero half: 19

Explored 37 nodes (1232 simplex iterations) in 0.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%