Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:47:13 2012

Optimize a model with 249 rows, 171 columns and 791 nonzeros
Presolve time: 0.00s
Presolved: 249 rows, 171 columns, 791 nonzeros
Variable types: 0 continuous, 171 integer (171 binary)
Found heuristic solution: objective 53.0000000

Root relaxation: objective 0.000000e+00, 78 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   47   53.00000    0.00000   100%     -    0s
H    0     0                      51.0000000    0.00000   100%     -    0s
H    0     0                      48.0000000    0.00000   100%     -    0s
     0     0    0.69877    0   49   48.00000    0.69877  98.5%     -    0s
     0     0    0.85456    0   58   48.00000    0.85456  98.2%     -    0s
     0     0    0.86002    0   49   48.00000    0.86002  98.2%     -    0s
     0     0    0.86002    0   49   48.00000    0.86002  98.2%     -    0s
     0     0    0.86002    0   49   48.00000    0.86002  98.2%     -    0s
     0     2    0.89756    0   49   48.00000    0.89756  98.1%     -    0s
*   27    27              16      34.0000000    4.24561  87.5%  32.3    0s
*   32    21              16      33.0000000    4.24561  87.1%  27.8    0s
H   58    41                      32.0000000    4.38390  86.3%  23.9    0s
*  103    57              15      27.0000000    7.13684  73.6%  23.6    0s
*  109    52              17      26.0000000    7.13684  72.6%  22.8    0s
*  225    66              18      25.0000000   12.20000  51.2%  19.8    0s
*  268    55              15      24.0000000   15.30051  36.2%  20.5    0s

Cutting planes:
  Gomory: 1
  Zero half: 8

Explored 399 nodes (7840 simplex iterations) in 0.29 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%