Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:49 2012

Optimize a model with 342 rows, 79 columns and 684 nonzeros
Presolve removed 147 rows and 3 columns
Presolve time: 0.00s
Presolved: 195 rows, 76 columns, 482 nonzeros
Variable types: 0 continuous, 76 integer (76 binary)
Found heuristic solution: objective 26.0000000

Root relaxation: objective 2.840000e+01, 107 iterations, 0.00 seconds

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

     0     0   28.40000    0   61   26.00000   28.40000  9.23%     -    0s
H    0     0                      27.0000000   28.40000  5.19%     -    0s
     0     0     cutoff    0        27.00000   27.99997  3.70%     -    0s

Cutting planes:
  Gomory: 3
  Zero half: 39

Explored 0 nodes (152 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0%