Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:57 2012

Optimize a model with 403 rows, 89 columns and 806 nonzeros
Presolve removed 139 rows and 0 columns
Presolve time: 0.00s
Presolved: 264 rows, 89 columns, 637 nonzeros
Variable types: 0 continuous, 89 integer (89 binary)
Found heuristic solution: objective 27.0000000

Root relaxation: objective 3.331034e+01, 163 iterations, 0.00 seconds

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

     0     0   33.31034    0   83   27.00000   33.31034  23.4%     -    0s
     0     0   32.56250    0   85   27.00000   32.56250  20.6%     -    0s
     0     0   32.28889    0   86   27.00000   32.28889  19.6%     -    0s
H    0     0                      29.0000000   32.28889  11.3%     -    0s
     0     0   32.07050    0   86   29.00000   32.07050  10.6%     -    0s
     0     0   32.00565    0   86   29.00000   32.00565  10.4%     -    0s
     0     0   31.94261    0   87   29.00000   31.94261  10.1%     -    0s
     0     0   31.89655    0   86   29.00000   31.89655  10.0%     -    0s
     0     0   31.88991    0   87   29.00000   31.88991  10.0%     -    0s
     0     0   31.88991    0   87   29.00000   31.88991  10.0%     -    0s
     0     2   31.88667    0   87   29.00000   31.88667  10.0%     -    0s

Cutting planes:
  Clique: 3
  Zero half: 31

Explored 46 nodes (1586 simplex iterations) in 0.09 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%