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

Optimize a model with 27 rows, 20 columns and 85 nonzeros
Presolve time: 0.00s
Presolved: 27 rows, 20 columns, 85 nonzeros
Variable types: 0 continuous, 20 integer (20 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 0.000000e+00, 11 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    7.00000    0.00000   100%     -    0s
     0     0    0.74359    0   13    7.00000    0.74359  89.4%     -    0s
H    0     0                       6.0000000    0.74359  87.6%     -    0s
     0     0    0.92754    0   15    6.00000    0.92754  84.5%     -    0s
     0     0    1.03704    0   15    6.00000    1.03704  82.7%     -    0s
     0     0    1.11293    0   18    6.00000    1.11293  81.5%     -    0s
     0     0    1.12121    0   16    6.00000    1.12121  81.3%     -    0s
     0     0    1.13623    0   17    6.00000    1.13623  81.1%     -    0s
     0     2    1.14719    0   17    6.00000    1.14719  80.9%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 6
  Mod-K: 1

Explored 8 nodes (127 simplex iterations) in 0.01 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%