Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:06 2012

Optimize a model with 71 rows, 60 columns and 235 nonzeros
Presolve time: 0.00s
Presolved: 71 rows, 60 columns, 235 nonzeros
Variable types: 0 continuous, 60 integer (60 binary)
Found heuristic solution: objective 14.0000000

Root relaxation: objective 0.000000e+00, 40 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   25   14.00000    0.00000   100%     -    0s
H    0     0                       8.0000000    0.00000   100%     -    0s
     0     0    0.57843    0   28    8.00000    0.57843  92.8%     -    0s
     0     0    0.58425    0   28    8.00000    0.58425  92.7%     -    0s
     0     0    0.58425    0   28    8.00000    0.58425  92.7%     -    0s
     0     2    0.60000    0   28    8.00000    0.60000  92.5%     -    0s
*   13    12               8       6.0000000    2.75000  54.2%  11.5    0s
*   31     8               9       5.0000000    3.46667  30.7%   8.6    0s

Cutting planes:
  Gomory: 1
  Mod-K: 2

Explored 46 nodes (472 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%