Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:00 2012

Optimize a model with 405 rows, 91 columns and 810 nonzeros
Presolve removed 143 rows and 0 columns
Presolve time: 0.00s
Presolved: 262 rows, 91 columns, 633 nonzeros
Variable types: 0 continuous, 91 integer (91 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 3.350000e+01, 182 iterations, 0.00 seconds

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

     0     0   33.50000    0   76   25.00000   33.50000  34.0%     -    0s
H    0     0                      26.0000000   33.50000  28.8%     -    0s
     0     0   32.95000    0   90   26.00000   32.95000  26.7%     -    0s
H    0     0                      27.0000000   32.95000  22.0%     -    0s
     0     0   32.61468    0   89   27.00000   32.61468  20.8%     -    0s
     0     0   32.36957    0   88   27.00000   32.36957  19.9%     -    0s
     0     0   32.16467    0   90   27.00000   32.16467  19.1%     -    0s
     0     0   31.94386    0   90   27.00000   31.94386  18.3%     -    0s
     0     0   31.80620    0   89   27.00000   31.80620  17.8%     -    0s
     0     0   31.74419    0   91   27.00000   31.74419  17.6%     -    0s
     0     0   31.73205    0   91   27.00000   31.73205  17.5%     -    0s
     0     2   31.72198    0   91   27.00000   31.72198  17.5%     -    0s
*   51    16              10      28.0000000   31.31807  11.9%  26.5    0s
*   67    11               7      29.0000000   30.81967  6.27%  26.7    0s

Cutting planes:
  Gomory: 1
  Clique: 1
  Zero half: 48

Explored 81 nodes (2661 simplex iterations) in 0.12 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%