Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:41:17 2012

Optimize a model with 189 rows, 136 columns and 606 nonzeros
Presolve time: 0.00s
Presolved: 189 rows, 136 columns, 606 nonzeros
Variable types: 0 continuous, 136 integer (136 binary)
Found heuristic solution: objective 46.0000000

Root relaxation: objective 0.000000e+00, 65 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   42   46.00000    0.00000   100%     -    0s
H    0     0                      43.0000000    0.00000   100%     -    0s
H    0     0                      41.0000000    0.00000   100%     -    0s
H    0     0                      40.0000000    0.00000   100%     -    0s
H    0     0                      37.0000000    0.00000   100%     -    0s
     0     0    0.66667    0   44   37.00000    0.66667  98.2%     -    0s
     0     0    0.88889    0   45   37.00000    0.88889  97.6%     -    0s
H    0     0                      36.0000000    0.88889  97.5%     -    0s
H    0     0                      34.0000000    0.88889  97.4%     -    0s
     0     0    0.91667    0   44   34.00000    0.91667  97.3%     -    0s
     0     0    0.97222    0   44   34.00000    0.97222  97.1%     -    0s
     0     0    0.97222    0   44   34.00000    0.97222  97.1%     -    0s
     0     0    0.97222    0   44   34.00000    0.97222  97.1%     -    0s
H    0     0                      33.0000000    0.97222  97.1%     -    0s
     0     2    0.98433    0   44   33.00000    0.98433  97.0%     -    0s
*   26    25              17      26.0000000    3.33333  87.2%  21.7    0s
*   49    29              14      25.0000000    3.50000  86.0%  19.8    0s
*   67    37              13      23.0000000    7.12500  69.0%  20.9    0s
*  156    53               9      22.0000000   11.30000  48.6%  17.5    0s
*  418    30              13      21.0000000   16.46154  21.6%  15.4    0s

Cutting planes:
  Gomory: 1
  Zero half: 4

Explored 471 nodes (7467 simplex iterations) in 0.21 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%