Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:47:12 2012

Optimize a model with 211 rows, 152 columns and 677 nonzeros
Presolve time: 0.00s
Presolved: 211 rows, 152 columns, 677 nonzeros
Variable types: 0 continuous, 152 integer (152 binary)
Found heuristic solution: objective 51.0000000

Root relaxation: objective 0.000000e+00, 80 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   51.00000    0.00000   100%     -    0s
H    0     0                      44.0000000    0.00000   100%     -    0s
H    0     0                      32.0000000    0.00000   100%     -    0s
H    0     0                      28.0000000    0.00000   100%     -    0s
     0     0    0.62112    0   51   28.00000    0.62112  97.8%     -    0s
     0     0    0.70671    0   51   28.00000    0.70671  97.5%     -    0s
     0     0    0.70671    0   52   28.00000    0.70671  97.5%     -    0s
     0     0    0.73167    0   52   28.00000    0.73167  97.4%     -    0s
     0     0    0.75614    0   60   28.00000    0.75614  97.3%     -    0s
     0     0    0.76838    0   55   28.00000    0.76838  97.3%     -    0s
     0     0    0.78107    0   65   28.00000    0.78107  97.2%     -    0s
     0     2    0.80423    0   65   28.00000    0.80423  97.1%     -    0s
*   25    20              13      27.0000000    4.07868  84.9%  27.5    0s
*   63    40              10      23.0000000    8.12000  64.7%  23.4    0s
*  127    59               8      22.0000000   10.75000  51.1%  20.8    0s

Cutting planes:
  Gomory: 1
  Zero half: 1
  Mod-K: 7

Explored 518 nodes (8578 simplex iterations) in 0.23 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%