Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:21:36 2012

Optimize a model with 505 rows, 466 columns and 1726 nonzeros
Presolve removed 0 rows and 17 columns
Presolve time: 0.00s
Presolved: 505 rows, 449 columns, 1709 nonzeros
Variable types: 0 continuous, 449 integer (448 binary)
Found heuristic solution: objective 93.0000000

Root relaxation: objective 0.000000e+00, 246 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  192   93.00000    0.00000   100%     -    0s
H    0     0                      69.0000000    0.00000   100%     -    0s
H    0     0                      63.0000000    0.00000   100%     -    0s
     0     0    0.44041    0  194   63.00000    0.44041  99.3%     -    0s
H    0     0                      53.0000000    0.44041  99.2%     -    0s
     0     0    0.77705    0  198   53.00000    0.77705  98.5%     -    0s
     0     0    0.77705    0  198   53.00000    0.77705  98.5%     -    0s
     0     2    0.82718    0  198   53.00000    0.82718  98.4%     -    0s
H   27    27                      29.0000000    1.00000  96.6%  49.6    0s
H   54    36                      21.0000000    1.00000  95.2%  31.5    0s
*  149    87              16      20.0000000    2.78263  86.1%  35.8    0s
*  387   118              10      19.0000000    8.52338  55.1%  32.2    0s

Explored 1437 nodes (47806 simplex iterations) in 2.17 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%