Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:15 2012

Optimize a model with 67 rows, 44 columns and 209 nonzeros
Presolve time: 0.00s
Presolved: 67 rows, 44 columns, 209 nonzeros
Variable types: 0 continuous, 44 integer (44 binary)
Found heuristic solution: objective 15.0000000

Root relaxation: objective 0.000000e+00, 16 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   11   15.00000    0.00000   100%     -    0s
     0     0    1.15476    0   22   15.00000    1.15476  92.3%     -    0s
     0     0    1.32409    0   27   15.00000    1.32409  91.2%     -    0s
     0     0    1.44939    0   27   15.00000    1.44939  90.3%     -    0s
     0     0    1.53275    0   31   15.00000    1.53275  89.8%     -    0s
     0     0    1.57852    0   33   15.00000    1.57852  89.5%     -    0s
     0     0    1.64500    0   34   15.00000    1.64500  89.0%     -    0s
     0     0    1.70936    0   36   15.00000    1.70936  88.6%     -    0s
     0     0    1.77196    0   36   15.00000    1.77196  88.2%     -    0s
     0     0    1.77544    0   37   15.00000    1.77544  88.2%     -    0s
     0     2    1.78017    0   37   15.00000    1.78017  88.1%     -    0s
*   12     8               6      14.0000000    5.66667  59.5%  16.3    0s
*   29     5               6      13.0000000    8.00000  38.5%  10.1    0s

Cutting planes:
  Gomory: 1
  Zero half: 14

Explored 37 nodes (480 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%