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

Optimize a model with 413 rows, 87 columns and 826 nonzeros
Presolve removed 149 rows and 0 columns
Presolve time: 0.00s
Presolved: 264 rows, 87 columns, 657 nonzeros
Variable types: 0 continuous, 87 integer (87 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 3.092857e+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   30.92857    0   82   25.00000   30.92857  23.7%     -    0s
H    0     0                      27.0000000   30.92857  14.6%     -    0s
H    0     0                      28.0000000   30.92857  10.5%     -    0s
     0     0   30.32474    0   83   28.00000   30.32474  8.30%     -    0s
     0     0   30.23377    0   75   28.00000   30.23377  7.98%     -    0s
H    0     0                      29.0000000   30.23377  4.25%     -    0s
     0     0   30.20321    0   76   29.00000   30.20321  4.15%     -    0s
     0     0   30.16373    0   80   29.00000   30.16373  4.01%     -    0s
     0     0   30.00000    0   77   29.00000   30.00000  3.45%     -    0s
     0     0   30.00000    0   74   29.00000   30.00000  3.45%     -    0s
     0     0     cutoff    0        29.00000   29.99997  3.45%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 1
  Zero half: 69

Explored 0 nodes (521 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%