Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:15 2012

Optimize a model with 83 rows, 68 columns and 273 nonzeros
Presolve time: 0.00s
Presolved: 83 rows, 68 columns, 273 nonzeros
Variable types: 0 continuous, 68 integer (68 binary)
Found heuristic solution: objective 19.0000000

Root relaxation: objective 0.000000e+00, 44 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   27   19.00000    0.00000   100%     -    0s
H    0     0                      15.0000000    0.00000   100%     -    0s
H    0     0                      14.0000000    0.00000   100%     -    0s
H    0     0                      13.0000000    0.00000   100%     -    0s
     0     0    0.52108    0   30   13.00000    0.52108  96.0%     -    0s
     0     0    0.61498    0   32   13.00000    0.61498  95.3%     -    0s
     0     0    0.70572    0   31   13.00000    0.70572  94.6%     -    0s
     0     0    0.74208    0   33   13.00000    0.74208  94.3%     -    0s
     0     0    0.76932    0   34   13.00000    0.76932  94.1%     -    0s
     0     0    0.77301    0   34   13.00000    0.77301  94.1%     -    0s
     0     2    0.89831    0   34   13.00000    0.89831  93.1%     -    0s
*   16    16              10      11.0000000    2.66521  75.8%  13.6    0s
*   17    14              10      10.0000000    2.66521  73.3%  13.4    0s
*   26    11               7       8.0000000    2.96471  62.9%  11.3    0s

Cutting planes:
  Gomory: 1
  Zero half: 4
  Mod-K: 2

Explored 62 nodes (712 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%