Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:47:00 2012

Optimize a model with 547 rows, 505 columns and 1870 nonzeros
Presolve removed 0 rows and 26 columns
Presolve time: 0.00s
Presolved: 547 rows, 479 columns, 1844 nonzeros
Variable types: 0 continuous, 479 integer (478 binary)
Found heuristic solution: objective 113.0000000

Root relaxation: objective 0.000000e+00, 334 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  203  113.00000    0.00000   100%     -    0s
H    0     0                      83.0000000    0.00000   100%     -    0s
H    0     0                      57.0000000    0.00000   100%     -    0s
     0     0    0.29966    0  205   57.00000    0.29966  99.5%     -    0s
H    0     0                      38.0000000    0.29966  99.2%     -    0s
     0     0    0.74518    0  208   38.00000    0.74518  98.0%     -    0s
H    0     0                      32.0000000    0.74518  97.7%     -    0s
     0     0    0.74518    0  208   32.00000    0.74518  97.7%     -    0s
     0     2    0.78162    0  208   32.00000    0.78162  97.6%     -    0s
H   54    53                      22.0000000    1.00000  95.5%  36.2    0s
H   84    61                      20.0000000    1.00000  95.0%  36.5    0s
H  546   236                      19.0000000    6.83453  64.0%  36.3    1s
  3389   298   16.79310   25  179   19.00000   13.74468  27.7%  27.6    5s

Explored 4956 nodes (131944 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%