Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:57:01 2012

Optimize a model with 523 rows, 485 columns and 1790 nonzeros
Presolve removed 0 rows and 22 columns
Presolve time: 0.00s
Presolved: 523 rows, 463 columns, 1768 nonzeros
Variable types: 0 continuous, 463 integer (462 binary)
Found heuristic solution: objective 104.0000000

Root relaxation: objective 0.000000e+00, 283 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  201  104.00000    0.00000   100%     -    0s
H    0     0                      62.0000000    0.00000   100%     -    0s
     0     0    0.44279    0  202   62.00000    0.44279  99.3%     -    0s
H    0     0                      53.0000000    0.44279  99.2%     -    0s
     0     0    0.97936    0  203   53.00000    0.97936  98.2%     -    0s
H    0     0                      42.0000000    0.97936  97.7%     -    0s
     0     0    1.15586    0  205   42.00000    1.15586  97.2%     -    0s
     0     0    1.15586    0  206   42.00000    1.15586  97.2%     -    0s
     0     0    1.15586    0  205   42.00000    1.15586  97.2%     -    0s
     0     2    1.17320    0  205   42.00000    1.17320  97.2%     -    0s
H   27    27                      39.0000000    2.43629  93.8%  41.1    0s
*   53    44              29      21.0000000    2.43629  88.4%  30.8    0s
*  118    74              28      20.0000000    4.47427  77.6%  27.5    0s
*  186   103              12      19.0000000    5.64706  70.3%  32.3    0s
*  691   190              34      18.0000000    9.54545  47.0%  31.7    1s

Explored 3577 nodes (87757 simplex iterations) in 4.71 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%