Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:20:53 2012

Optimize a model with 249 rows, 190 columns and 810 nonzeros
Presolve time: 0.00s
Presolved: 249 rows, 190 columns, 810 nonzeros
Variable types: 0 continuous, 190 integer (190 binary)
Found heuristic solution: objective 55.0000000

Root relaxation: objective 0.000000e+00, 111 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   65   55.00000    0.00000   100%     -    0s
H    0     0                      45.0000000    0.00000   100%     -    0s
H    0     0                      37.0000000    0.00000   100%     -    0s
     0     0    0.42019    0   67   37.00000    0.42019  98.9%     -    0s
     0     0    1.31452    0   68   37.00000    1.31452  96.4%     -    0s
     0     0    1.31788    0   73   37.00000    1.31788  96.4%     -    0s
H    0     0                      34.0000000    1.31788  96.1%     -    0s
     0     2    1.31985    0   73   34.00000    1.31985  96.1%     -    0s
*   27    26              18      23.0000000    3.08685  86.6%  22.7    0s
*  436   153              15      22.0000000   10.83617  50.7%  21.6    0s
* 1025   147              15      21.0000000   15.16884  27.8%  19.3    0s
* 1174    94              13      20.0000000   16.38462  18.1%  19.2    0s

Cutting planes:
  Gomory: 4
  Mod-K: 2

Explored 1314 nodes (24561 simplex iterations) in 0.74 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%