Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:48:36 2012

Optimize a model with 541 rows, 492 columns and 1842 nonzeros
Presolve removed 0 rows and 13 columns
Presolve time: 0.00s
Presolved: 541 rows, 479 columns, 1829 nonzeros
Variable types: 0 continuous, 479 integer (478 binary)
Found heuristic solution: objective 116.0000000

Root relaxation: objective 0.000000e+00, 274 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  206  116.00000    0.00000   100%     -    0s
H    0     0                      69.0000000    0.00000   100%     -    0s
     0     0    0.49630    0  207   69.00000    0.49630  99.3%     -    0s
H    0     0                      66.0000000    0.49630  99.2%     -    0s
     0     0    0.93656    0  208   66.00000    0.93656  98.6%     -    0s
H    0     0                      61.0000000    0.93656  98.5%     -    0s
     0     0    0.93656    0  208   61.00000    0.93656  98.5%     -    0s
H    0     0                      51.0000000    0.93656  98.2%     -    0s
H    0     0                      49.0000000    0.93656  98.1%     -    0s
     0     2    0.94488    0  208   49.00000    0.94488  98.1%     -    0s
*   49    44              29      21.0000000    1.01773  95.2%  42.1    0s
*   76    52              19      20.0000000    1.33120  93.3%  45.1    0s
*  568   245              14      19.0000000    6.15741  67.6%  38.1    1s
  3782   404     cutoff   22        19.00000   14.94366  21.3%  25.2    5s

Explored 5350 nodes (135567 simplex iterations) in 6.78 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%