Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:46 2012

Optimize a model with 305 rows, 76 columns and 610 nonzeros
Presolve removed 87 rows and 0 columns
Presolve time: 0.00s
Presolved: 218 rows, 76 columns, 505 nonzeros
Variable types: 0 continuous, 76 integer (76 binary)
Found heuristic solution: objective 21.0000000

Root relaxation: objective 3.000000e+01, 126 iterations, 0.00 seconds

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

     0     0   30.00000    0   63   21.00000   30.00000  42.9%     -    0s
H    0     0                      22.0000000   30.00000  36.4%     -    0s
H    0     0                      23.0000000   30.00000  30.4%     -    0s
     0     0   29.50000    0   75   23.00000   29.50000  28.3%     -    0s
     0     0   28.85156    0   76   23.00000   28.85156  25.4%     -    0s
     0     0   28.43058    0   76   23.00000   28.43058  23.6%     -    0s
     0     0   28.31098    0   76   23.00000   28.31098  23.1%     -    0s
     0     0   28.23665    0   75   23.00000   28.23665  22.8%     -    0s
     0     0   28.13734    0   75   23.00000   28.13734  22.3%     -    0s
H    0     0                      24.0000000   28.13734  17.2%     -    0s
     0     0   28.11231    0   76   24.00000   28.11231  17.1%     -    0s
     0     0   28.11231    0   75   24.00000   28.11231  17.1%     -    0s
     0     2   28.10087    0   75   24.00000   28.10087  17.1%     -    0s
*   32     5               6      25.0000000   28.02034  12.1%  18.1    0s

Cutting planes:
  Gomory: 1
  Zero half: 45

Explored 99 nodes (2374 simplex iterations) in 0.09 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%