Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:47 2012

Optimize a model with 325 rows, 77 columns and 650 nonzeros
Presolve removed 121 rows and 0 columns
Presolve time: 0.00s
Presolved: 204 rows, 77 columns, 506 nonzeros
Variable types: 0 continuous, 77 integer (77 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 2.800000e+01, 139 iterations, 0.00 seconds

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

     0     0   28.00000    0   72   23.00000   28.00000  21.7%     -    0s
H    0     0                      24.0000000   28.00000  16.7%     -    0s
     0     0   27.47381    0   75   24.00000   27.47381  14.5%     -    0s
     0     0   27.00000    0   73   24.00000   27.00000  12.5%     -    0s
     0     0   27.00000    0   69   24.00000   27.00000  12.5%     -    0s
     0     0   26.89171    0   74   24.00000   26.89171  12.0%     -    0s
     0     0   26.84159    0   75   24.00000   26.84159  11.8%     -    0s
     0     0   26.84158    0   76   24.00000   26.84158  11.8%     -    0s
     0     0   26.84158    0   76   24.00000   26.84158  11.8%     -    0s
H    0     0                      25.0000000   26.84158  7.37%     -    0s
     0     2   26.84158    0   76   25.00000   26.84158  7.37%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 17

Explored 15 nodes (723 simplex iterations) in 0.05 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%