Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:35 2012

Optimize a model with 141 rows, 107 columns and 457 nonzeros
Presolve time: 0.00s
Presolved: 141 rows, 107 columns, 457 nonzeros
Variable types: 0 continuous, 107 integer (107 binary)
Found heuristic solution: objective 28.0000000

Root relaxation: objective 0.000000e+00, 65 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   36   28.00000    0.00000   100%     -    0s
H    0     0                      16.0000000    0.00000   100%     -    0s
     0     0    0.70833    0   37   16.00000    0.70833  95.6%     -    0s
     0     0    0.73262    0   39   16.00000    0.73262  95.4%     -    0s
     0     0    0.75862    0   39   16.00000    0.75862  95.3%     -    0s
     0     0    0.78571    0   41   16.00000    0.78571  95.1%     -    0s
     0     0    0.78571    0   40   16.00000    0.78571  95.1%     -    0s
     0     2    0.78571    0   40   16.00000    0.78571  95.1%     -    0s
*   38    13              11      15.0000000    4.46838  70.2%  16.0    0s

Cutting planes:
  Gomory: 1
  Zero half: 1
  Mod-K: 3

Explored 147 nodes (2245 simplex iterations) in 0.09 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%