Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:43 2012

Optimize a model with 234 rows, 70 columns and 468 nonzeros
Presolve removed 62 rows and 0 columns
Presolve time: 0.00s
Presolved: 172 rows, 70 columns, 390 nonzeros
Variable types: 0 continuous, 70 integer (70 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 2.860000e+01, 106 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   28.60000    0   65   23.00000   28.60000  24.3%     -    0s
H    0     0                      24.0000000   28.60000  19.2%     -    0s
     0     0   28.00000    0   66   24.00000   28.00000  16.7%     -    0s
     0     0   27.66667    0   67   24.00000   27.66667  15.3%     -    0s
     0     0   27.42857    0   68   24.00000   27.42857  14.3%     -    0s
H    0     0                      25.0000000   27.42857  9.71%     -    0s
     0     0   27.22148    0   70   25.00000   27.22148  8.89%     -    0s
     0     0   26.92641    0   69   25.00000   26.92641  7.71%     -    0s
     0     0   26.78417    0   68   25.00000   26.78417  7.14%     -    0s
     0     0   26.65337    0   70   25.00000   26.65337  6.61%     -    0s
     0     0   26.54433    0   70   25.00000   26.54433  6.18%     -    0s
     0     0   26.49693    0   70   25.00000   26.49693  5.99%     -    0s
     0     0   26.40506    0   67   25.00000   26.40506  5.62%     -    0s
     0     0   26.40306    0   69   25.00000   26.40306  5.61%     -    0s
     0     0   26.40306    0   69   25.00000   26.40306  5.61%     -    0s
     0     2   26.40088    0   69   25.00000   26.40088  5.60%     -    0s

Cutting planes:
  Zero half: 36

Explored 5 nodes (516 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%