Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:20:54 2012

Optimize a model with 235 rows, 183 columns and 768 nonzeros
Presolve time: 0.00s
Presolved: 235 rows, 183 columns, 768 nonzeros
Variable types: 0 continuous, 183 integer (183 binary)
Found heuristic solution: objective 48.0000000

Root relaxation: objective 0.000000e+00, 96 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   66   48.00000    0.00000   100%     -    0s
H    0     0                      43.0000000    0.00000   100%     -    0s
H    0     0                      42.0000000    0.00000   100%     -    0s
     0     0    0.56897    0   67   42.00000    0.56897  98.6%     -    0s
H    0     0                      41.0000000    0.56897  98.6%     -    0s
     0     0    1.22897    0   68   41.00000    1.22897  97.0%     -    0s
     0     0    1.54223    0   70   41.00000    1.54223  96.2%     -    0s
H    0     0                      28.0000000    1.54223  94.5%     -    0s
     0     0    1.55939    0   72   28.00000    1.55939  94.4%     -    0s
     0     2    1.58983    0   72   28.00000    1.58983  94.3%     -    0s
*   19    19              13      21.0000000    5.48497  73.9%  34.4    0s
*   26    13              13      20.0000000    5.48497  72.6%  26.8    0s
*  255    31              10      18.0000000   12.20548  32.2%  21.1    0s

Cutting planes:
  Gomory: 4
  Zero half: 1

Explored 371 nodes (7343 simplex iterations) in 0.30 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%