Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:24:51 2012

Optimize a model with 511 rows, 471 columns and 1746 nonzeros
Presolve removed 0 rows and 20 columns
Presolve time: 0.00s
Presolved: 511 rows, 451 columns, 1726 nonzeros
Variable types: 0 continuous, 451 integer (450 binary)
Found heuristic solution: objective 102.0000000

Root relaxation: objective 0.000000e+00, 287 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  189  102.00000    0.00000   100%     -    0s
H    0     0                     101.0000000    0.00000   100%     -    0s
H    0     0                      75.0000000    0.00000   100%     -    0s
H    0     0                      71.0000000    0.00000   100%     -    0s
     0     0    0.41186    0  191   71.00000    0.41186  99.4%     -    0s
H    0     0                      62.0000000    0.41186  99.3%     -    0s
     0     0    0.99916    0  194   62.00000    0.99916  98.4%     -    0s
H    0     0                      47.0000000    0.99916  97.9%     -    0s
H    0     0                      44.0000000    0.99916  97.7%     -    0s
     0     0    0.99942    0  196   44.00000    0.99942  97.7%     -    0s
     0     0    0.99942    0  196   44.00000    0.99942  97.7%     -    0s
     0     2    0.99989    0  195   44.00000    0.99989  97.7%     -    0s
H   27    27                      18.0000000    1.02342  94.3%  37.4    0s
  3417   360   15.45695   28  176   18.00000   13.06542  27.4%  23.4    5s

Explored 5123 nodes (116734 simplex iterations) in 7.10 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%