Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:22:18 2012

Optimize a model with 575 rows, 529 columns and 1964 nonzeros
Presolve removed 0 rows and 26 columns
Presolve time: 0.00s
Presolved: 575 rows, 503 columns, 1938 nonzeros
Variable types: 0 continuous, 503 integer (502 binary)
Found heuristic solution: objective 109.0000000

Root relaxation: objective 0.000000e+00, 313 iterations, 0.01 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0    0.00000    0  205  109.00000    0.00000   100%     -    0s
H    0     0                      77.0000000    0.00000   100%     -    0s
     0     0    0.35545    0  208   77.00000    0.35545   100%     -    0s
H    0     0                      66.0000000    0.35545  99.5%     -    0s
     0     0    0.79801    0  210   66.00000    0.79801  98.8%     -    0s
H    0     0                      58.0000000    0.79801  98.6%     -    0s
     0     0    0.79801    0  210   58.00000    0.79801  98.6%     -    0s
     0     2    0.80015    0  210   58.00000    0.80015  98.6%     -    0s
*   50    36              27      22.0000000    2.18923  90.0%  43.6    0s
*  215   129              18      21.0000000    5.16360  75.4%  42.2    0s
H  715   222                      20.0000000   10.00000  50.0%  35.1    1s
  2682   418   15.69274   21  213   20.00000   13.45223  32.7%  28.9    5s

Explored 5058 nodes (141558 simplex iterations) in 8.89 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%