Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:59 2012

Optimize a model with 383 rows, 90 columns and 766 nonzeros
Presolve removed 134 rows and 1 columns
Presolve time: 0.00s
Presolved: 249 rows, 89 columns, 592 nonzeros
Variable types: 0 continuous, 89 integer (89 binary)
Found heuristic solution: objective 24.0000000

Root relaxation: objective 3.333190e+01, 153 iterations, 0.00 seconds

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

     0     0   33.33190    0   87   24.00000   33.33190  38.9%     -    0s
H    0     0                      30.0000000   33.33190  11.1%     -    0s
     0     0   32.77826    0   81   30.00000   32.77826  9.26%     -    0s
     0     0   32.55385    0   85   30.00000   32.55385  8.51%     -    0s
     0     0   32.40909    0   87   30.00000   32.40909  8.03%     -    0s
     0     0   32.25000    0   85   30.00000   32.25000  7.50%     -    0s
     0     0   32.03286    0   87   30.00000   32.03286  6.78%     -    0s
     0     0   31.93243    0   88   30.00000   31.93243  6.44%     -    0s
     0     0   31.87552    0   88   30.00000   31.87552  6.25%     -    0s
     0     0   31.83511    0   88   30.00000   31.83511  6.12%     -    0s
     0     0   31.83333    0   87   30.00000   31.83333  6.11%     -    0s
     0     0   31.82324    0   88   30.00000   31.82324  6.08%     -    0s
     0     0   31.82324    0   86   30.00000   31.82324  6.08%     -    0s
     0     2   31.82324    0   86   30.00000   31.82324  6.08%     -    0s

Cutting planes:
  Clique: 1
  Zero half: 27
  Mod-K: 2

Explored 17 nodes (857 simplex iterations) in 0.08 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%