Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:31 2012

Optimize a model with 548 rows, 103 columns and 1096 nonzeros
Presolve removed 210 rows and 0 columns
Presolve time: 0.00s
Presolved: 338 rows, 103 columns, 859 nonzeros
Variable types: 0 continuous, 103 integer (103 binary)
Found heuristic solution: objective 27.0000000

Root relaxation: objective 3.563495e+01, 243 iterations, 0.00 seconds

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

     0     0   35.63495    0  100   27.00000   35.63495  32.0%     -    0s
     0     0   35.00000    0  100   27.00000   35.00000  29.6%     -    0s
     0     0   35.00000    0  100   27.00000   35.00000  29.6%     -    0s
H    0     0                      28.0000000   35.00000  25.0%     -    0s
     0     0   34.99901    0  102   28.00000   34.99901  25.0%     -    0s
     0     0   34.99901    0  102   28.00000   34.99901  25.0%     -    0s
     0     2   34.99749    0  102   28.00000   34.99749  25.0%     -    0s
H    5     5                      30.0000000   34.99749  16.7%  47.8    0s

Cutting planes:
  Gomory: 4
  Zero half: 23

Explored 306 nodes (6466 simplex iterations) in 0.24 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%