Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:21:15 2012

Optimize a model with 567 rows, 511 columns and 1926 nonzeros
Presolve removed 0 rows and 14 columns
Presolve time: 0.00s
Presolved: 567 rows, 497 columns, 1912 nonzeros
Variable types: 0 continuous, 497 integer (496 binary)
Found heuristic solution: objective 111.0000000

Root relaxation: objective 0.000000e+00, 291 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  207  111.00000    0.00000   100%     -    0s
H    0     0                      81.0000000    0.00000   100%     -    0s
     0     0    0.34794    0  209   81.00000    0.34794   100%     -    0s
H    0     0                      75.0000000    0.34794   100%     -    0s
     0     0    0.91158    0  211   75.00000    0.91158  98.8%     -    0s
H    0     0                      49.0000000    0.91158  98.1%     -    0s
     0     0    0.91234    0  213   49.00000    0.91234  98.1%     -    0s
     0     0    0.91234    0  213   49.00000    0.91234  98.1%     -    0s
H    0     0                      48.0000000    0.91234  98.1%     -    0s
     0     2    0.92419    0  213   48.00000    0.92419  98.1%     -    0s
H   54    41                      26.0000000    1.00000  96.2%  35.6    0s
H   81    52                      23.0000000    1.00000  95.7%  37.3    0s
*   94    52              24      21.0000000    1.00000  95.2%  37.5    0s
*  677   187              24      20.0000000    6.38182  68.1%  45.3    1s

Explored 1298 nodes (49117 simplex iterations) in 2.52 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%