Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:32:06 2012

Optimize a model with 283 rows, 218 columns and 923 nonzeros
Presolve removed 0 rows and 1 columns
Presolve time: 0.00s
Presolved: 283 rows, 217 columns, 922 nonzeros
Variable types: 0 continuous, 217 integer (216 binary)
Found heuristic solution: objective 60.0000000

Root relaxation: objective 0.000000e+00, 98 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   73   60.00000    0.00000   100%     -    0s
H    0     0                      58.0000000    0.00000   100%     -    0s
H    0     0                      55.0000000    0.00000   100%     -    0s
     0     0    0.32110    0   75   55.00000    0.32110  99.4%     -    0s
H    0     0                      51.0000000    0.32110  99.4%     -    0s
     0     0    0.94839    0   77   51.00000    0.94839  98.1%     -    0s
     0     0    0.94953    0   79   51.00000    0.94953  98.1%     -    0s
     0     0    0.94953    0   79   51.00000    0.94953  98.1%     -    0s
H    0     0                      35.0000000    0.94953  97.3%     -    0s
     0     2    0.95508    0   79   35.00000    0.95508  97.3%     -    0s
*   37    29              24      27.0000000    3.23092  88.0%  27.5    0s
*  166    98              13      26.0000000    8.69008  66.6%  27.8    0s
*  211   103              15      25.0000000    9.46147  62.2%  27.2    0s
* 1600    97              24      24.0000000   16.93750  29.4%  21.1    1s

Explored 2038 nodes (41890 simplex iterations) in 1.41 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%