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

Optimize a model with 309 rows, 75 columns and 618 nonzeros
Presolve removed 110 rows and 0 columns
Presolve time: 0.00s
Presolved: 199 rows, 75 columns, 491 nonzeros
Variable types: 0 continuous, 75 integer (75 binary)
Found heuristic solution: objective 26.0000000

Root relaxation: objective 2.881818e+01, 142 iterations, 0.00 seconds

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

     0     0   28.81818    0   59   26.00000   28.81818  10.8%     -    0s
     0     0   28.00000    0   66   26.00000   28.00000  7.69%     -    0s
     0     0   27.97461    0   73   26.00000   27.97461  7.59%     -    0s
     0     0   27.81967    0   70   26.00000   27.81967  7.00%     -    0s
     0     0   27.57143    0   72   26.00000   27.57143  6.04%     -    0s
     0     0   27.55592    0   71   26.00000   27.55592  5.98%     -    0s
     0     0   27.54255    0   72   26.00000   27.54255  5.93%     -    0s
     0     0   27.54255    0   71   26.00000   27.54255  5.93%     -    0s
     0     2   27.54255    0   71   26.00000   27.54255  5.93%     -    0s

Cutting planes:
  Clique: 1
  Zero half: 24

Explored 17 nodes (679 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.600000000000e+01, best bound 2.600000000000e+01, gap 0.0%