Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:56:53 2012

Optimize a model with 213 rows, 155 columns and 685 nonzeros
Presolve time: 0.00s
Presolved: 213 rows, 155 columns, 685 nonzeros
Variable types: 0 continuous, 155 integer (155 binary)
Found heuristic solution: objective 51.0000000

Root relaxation: objective 0.000000e+00, 74 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   48   51.00000    0.00000   100%     -    0s
H    0     0                      48.0000000    0.00000   100%     -    0s
H    0     0                      35.0000000    0.00000   100%     -    0s
     0     0    0.50000    0   49   35.00000    0.50000  98.6%     -    0s
H    0     0                      28.0000000    0.50000  98.2%     -    0s
H    0     0                      26.0000000    0.50000  98.1%     -    0s
     0     0    0.70487    0   51   26.00000    0.70487  97.3%     -    0s
     0     0    0.71014    0   51   26.00000    0.71014  97.3%     -    0s
     0     0    0.71014    0   51   26.00000    0.71014  97.3%     -    0s
     0     2    0.71014    0   51   26.00000    0.71014  97.3%     -    0s
*   82    58              16      24.0000000    4.48447  81.3%  24.8    0s
*  126    68              14      20.0000000    7.41546  62.9%  24.5    0s
*  144    67              11      19.0000000    7.47597  60.7%  24.2    0s
*  216    56              10      18.0000000    8.42308  53.2%  22.5    0s

Cutting planes:
  Gomory: 1
  Zero half: 2
  Mod-K: 1

Explored 419 nodes (8393 simplex iterations) in 0.24 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%