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

Optimize a model with 396 rows, 88 columns and 792 nonzeros
Presolve removed 156 rows and 3 columns
Presolve time: 0.00s
Presolved: 240 rows, 85 columns, 579 nonzeros
Variable types: 0 continuous, 85 integer (85 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 3.284000e+01, 154 iterations, 0.00 seconds

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

     0     0   32.84000    0   77   25.00000   32.84000  31.4%     -    0s
H    0     0                      27.0000000   32.84000  21.6%     -    0s
     0     0   32.24877    0   81   27.00000   32.24877  19.4%     -    0s
H    0     0                      28.0000000   32.24877  15.2%     -    0s
     0     0   31.94835    0   79   28.00000   31.94835  14.1%     -    0s
H    0     0                      29.0000000   31.94835  10.2%     -    0s
     0     0   31.78172    0   78   29.00000   31.78172  9.59%     -    0s
     0     0   31.65326    0   77   29.00000   31.65326  9.15%     -    0s
     0     0   31.62993    0   83   29.00000   31.62993  9.07%     -    0s
     0     0   31.50000    0   83   29.00000   31.50000  8.62%     -    0s
     0     0   31.43978    0   82   29.00000   31.43978  8.41%     -    0s
     0     0   31.39689    0   81   29.00000   31.39689  8.27%     -    0s
     0     0   31.33894    0   83   29.00000   31.33894  8.07%     -    0s
     0     0   31.33894    0   83   29.00000   31.33894  8.07%     -    0s
     0     0   31.33894    0   83   29.00000   31.33894  8.07%     -    0s
     0     2   31.33510    0   83   29.00000   31.33510  8.05%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 4
  Zero half: 45

Explored 27 nodes (1177 simplex iterations) in 0.08 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%