Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:21:50 2012

Optimize a model with 243 rows, 189 columns and 794 nonzeros
Presolve removed 0 rows and 1 columns
Presolve time: 0.00s
Presolved: 243 rows, 188 columns, 793 nonzeros
Variable types: 0 continuous, 188 integer (187 binary)
Found heuristic solution: objective 52.0000000

Root relaxation: objective 0.000000e+00, 103 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   66   52.00000    0.00000   100%     -    0s
H    0     0                      47.0000000    0.00000   100%     -    0s
H    0     0                      43.0000000    0.00000   100%     -    0s
     0     0    0.59674    0   67   43.00000    0.59674  98.6%     -    0s
H    0     0                      41.0000000    0.59674  98.5%     -    0s
     0     0    1.14346    0   69   41.00000    1.14346  97.2%     -    0s
     0     0    1.25817    0   70   41.00000    1.25817  96.9%     -    0s
     0     0    1.25989    0   70   41.00000    1.25989  96.9%     -    0s
     0     0    1.25989    0   70   41.00000    1.25989  96.9%     -    0s
H    0     0                      37.0000000    1.25989  96.6%     -    0s
H    0     0                      31.0000000    1.25989  95.9%     -    0s
     0     2    1.26255    0   70   31.00000    1.26255  95.9%     -    0s
*   29    27              18      24.0000000    3.41258  85.8%  25.2    0s
*   82    55              16      22.0000000    5.96317  72.9%  24.1    0s
*  504   177              15      21.0000000   10.94831  47.9%  22.1    0s

Cutting planes:
  Gomory: 4
  Mod-K: 1

Explored 1742 nodes (34417 simplex iterations) in 1.08 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%