Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:45 2012

Optimize a model with 275 rows, 74 columns and 550 nonzeros
Presolve removed 74 rows and 0 columns
Presolve time: 0.00s
Presolved: 201 rows, 74 columns, 455 nonzeros
Variable types: 0 continuous, 74 integer (74 binary)
Found heuristic solution: objective 22.0000000

Root relaxation: objective 2.975000e+01, 136 iterations, 0.00 seconds

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

     0     0   29.75000    0   64   22.00000   29.75000  35.2%     -    0s
H    0     0                      23.0000000   29.75000  29.3%     -    0s
     0     0   28.99292    0   72   23.00000   28.99292  26.1%     -    0s
     0     0   28.48560    0   71   23.00000   28.48560  23.9%     -    0s
     0     0   28.13454    0   73   23.00000   28.13454  22.3%     -    0s
     0     0   27.85223    0   74   23.00000   27.85223  21.1%     -    0s
H    0     0                      24.0000000   27.85223  16.1%     -    0s
     0     0   27.75556    0   74   24.00000   27.75556  15.6%     -    0s
     0     0   27.75090    0   74   24.00000   27.75090  15.6%     -    0s
     0     0   27.75090    0   71   24.00000   27.75090  15.6%     -    0s
     0     2   27.75090    0   71   24.00000   27.75090  15.6%     -    0s
*   35    12               6      25.0000000   27.52439  10.1%  16.1    0s

Cutting planes:
  Zero half: 39

Explored 64 nodes (1259 simplex iterations) in 0.06 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%