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

Optimize a model with 75 rows, 51 columns and 236 nonzeros
Presolve time: 0.00s
Presolved: 75 rows, 51 columns, 236 nonzeros
Variable types: 0 continuous, 51 integer (51 binary)
Found heuristic solution: objective 19.0000000

Root relaxation: objective 0.000000e+00, 21 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   19.00000    0.00000   100%     -    0s
H    0     0                      16.0000000    0.00000   100%     -    0s
     0     0    0.75000    0   16   16.00000    0.75000  95.3%     -    0s
H    0     0                      13.0000000    0.75000  94.2%     -    0s
     0     0    0.91667    0   16   13.00000    0.91667  92.9%     -    0s
     0     0    0.91667    0   16   13.00000    0.91667  92.9%     -    0s
     0     0    1.00000    0   16   13.00000    1.00000  92.3%     -    0s
     0     0    1.00000    0   19   13.00000    1.00000  92.3%     -    0s
     0     0    1.00000    0   16   13.00000    1.00000  92.3%     -    0s
     0     2    1.00000    0   16   13.00000    1.00000  92.3%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 3

Explored 71 nodes (592 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%