Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:05 2012

Optimize a model with 31 rows, 22 columns and 97 nonzeros
Presolve time: 0.00s
Presolved: 31 rows, 22 columns, 97 nonzeros
Variable types: 0 continuous, 22 integer (22 binary)
Found heuristic solution: objective 8.0000000

Root relaxation: objective 0.000000e+00, 9 iterations, 0.00 seconds

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

     0     0    0.00000    0    7    8.00000    0.00000   100%     -    0s
     0     0    0.77083    0   12    8.00000    0.77083  90.4%     -    0s
H    0     0                       7.0000000    0.77083  89.0%     -    0s
H    0     0                       6.0000000    0.77083  87.2%     -    0s
     0     0    0.85714    0   10    6.00000    0.85714  85.7%     -    0s
     0     0    0.97585    0   17    6.00000    0.97585  83.7%     -    0s
     0     0    1.05085    0   16    6.00000    1.05085  82.5%     -    0s
     0     0    1.13978    0   17    6.00000    1.13978  81.0%     -    0s
     0     0    1.14286    0   11    6.00000    1.14286  81.0%     -    0s
     0     0    1.18681    0   20    6.00000    1.18681  80.2%     -    0s
     0     0    1.22222    0   15    6.00000    1.22222  79.6%     -    0s
     0     0    1.27273    0   12    6.00000    1.27273  78.8%     -    0s
     0     0    1.27642    0   20    6.00000    1.27642  78.7%     -    0s
     0     2    1.29825    0   20    6.00000    1.29825  78.4%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 10

Explored 9 nodes (149 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%