Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:27 2012

Optimize a model with 81 rows, 69 columns and 269 nonzeros
Presolve time: 0.00s
Presolved: 81 rows, 69 columns, 269 nonzeros
Variable types: 0 continuous, 69 integer (69 binary)
Found heuristic solution: objective 12.0000000

Root relaxation: objective 0.000000e+00, 41 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   28   12.00000    0.00000   100%     -    0s
H    0     0                      10.0000000    0.00000   100%     -    0s
     0     0    0.80769    0   31   10.00000    0.80769  91.9%     -    0s
H    0     0                       9.0000000    0.80769  91.0%     -    0s
     0     0    1.14162    0   32    9.00000    1.14162  87.3%     -    0s
H    0     0                       8.0000000    1.14162  85.7%     -    0s
     0     0    1.14162    0   32    8.00000    1.14162  85.7%     -    0s
     0     0    1.14162    0   32    8.00000    1.14162  85.7%     -    0s
H    0     0                       7.0000000    1.14162  83.7%     -    0s
     0     2    1.15084    0   32    7.00000    1.15084  83.6%     -    0s
*    7     7               6       6.0000000    3.20000  46.7%  17.0    0s

Cutting planes:
  Gomory: 3
  Mod-K: 2

Explored 20 nodes (341 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%