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

Optimize a model with 343 rows, 85 columns and 686 nonzeros
Presolve removed 126 rows and 3 columns
Presolve time: 0.00s
Presolved: 217 rows, 82 columns, 511 nonzeros
Variable types: 0 continuous, 82 integer (82 binary)
Found heuristic solution: objective 27.0000000

Root relaxation: objective 3.262500e+01, 151 iterations, 0.00 seconds

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

     0     0   32.62500    0   73   27.00000   32.62500  20.8%     -    0s
H    0     0                      28.0000000   32.62500  16.5%     -    0s
     0     0   32.25054    0   76   28.00000   32.25054  15.2%     -    0s
     0     0   32.03822    0   77   28.00000   32.03822  14.4%     -    0s
     0     0   31.60028    0   79   28.00000   31.60028  12.9%     -    0s
     0     0   31.39286    0   79   28.00000   31.39286  12.1%     -    0s
     0     0   31.27206    0   77   28.00000   31.27206  11.7%     -    0s
     0     0   31.23377    0   76   28.00000   31.23377  11.5%     -    0s
     0     0   31.15979    0   78   28.00000   31.15979  11.3%     -    0s
     0     0   31.14156    0   79   28.00000   31.14156  11.2%     -    0s
     0     0   31.14156    0   79   28.00000   31.14156  11.2%     -    0s
     0     2   31.14006    0   79   28.00000   31.14006  11.2%     -    0s
*   33     9               7      29.0000000   30.60784  5.54%  22.2    0s

Cutting planes:
  Zero half: 46

Explored 44 nodes (1382 simplex iterations) in 0.07 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%