Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:21:53 2012

Optimize a model with 217 rows, 176 columns and 716 nonzeros
Presolve removed 0 rows and 3 columns
Presolve time: 0.00s
Presolved: 217 rows, 173 columns, 713 nonzeros
Variable types: 0 continuous, 173 integer (172 binary)
Found heuristic solution: objective 49.0000000

Root relaxation: objective 0.000000e+00, 97 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   64   49.00000    0.00000   100%     -    0s
H    0     0                      38.0000000    0.00000   100%     -    0s
H    0     0                      35.0000000    0.00000   100%     -    0s
     0     0    0.41647    0   66   35.00000    0.41647  98.8%     -    0s
H    0     0                      28.0000000    0.41647  98.5%     -    0s
     0     0    1.02988    0   67   28.00000    1.02988  96.3%     -    0s
     0     0    1.25853    0   69   28.00000    1.25853  95.5%     -    0s
     0     2    1.26137    0   69   28.00000    1.26137  95.5%     -    0s
*   24    24              16      21.0000000    3.46687  83.5%  21.8    0s
*   57    36              19      20.0000000    3.58729  82.1%  15.8    0s
*   77    49              12      19.0000000    5.42950  71.4%  18.2    0s
*  133    70              13      18.0000000    6.56757  63.5%  18.9    0s
*  186    71              16      17.0000000    6.67939  60.7%  17.6    0s

Cutting planes:
  Gomory: 5

Explored 672 nodes (12607 simplex iterations) in 0.39 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%