Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:28 2012

Optimize a model with 69 rows, 48 columns and 218 nonzeros
Presolve time: 0.00s
Presolved: 69 rows, 48 columns, 218 nonzeros
Variable types: 0 continuous, 48 integer (48 binary)
Found heuristic solution: objective 21.0000000
Found heuristic solution: objective 20.0000000

Root relaxation: objective 0.000000e+00, 22 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   14   20.00000    0.00000   100%     -    0s
H    0     0                      14.0000000    0.00000   100%     -    0s
     0     0    0.64286    0   16   14.00000    0.64286  95.4%     -    0s
     0     0    0.78571    0   16   14.00000    0.78571  94.4%     -    0s
     0     0    0.92857    0   17   14.00000    0.92857  93.4%     -    0s
     0     0    0.92857    0   16   14.00000    0.92857  93.4%     -    0s
     0     0    1.00000    0   16   14.00000    1.00000  92.9%     -    0s
     0     0    1.00000    0   16   14.00000    1.00000  92.9%     -    0s
     0     0    1.00000    0   16   14.00000    1.00000  92.9%     -    0s
H    0     0                      13.0000000    1.00000  92.3%     -    0s
     0     2    1.00000    0   16   13.00000    1.00000  92.3%     -    0s
*   24     8               6      12.0000000    3.80000  68.3%   9.9    0s

Cutting planes:
  Gomory: 1
  Zero half: 4

Explored 62 nodes (594 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%