Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:12 2012

Optimize a model with 258 rows, 33 columns and 516 nonzeros
Presolve removed 176 rows and 0 columns
Presolve time: 0.00s
Presolved: 82 rows, 33 columns, 382 nonzeros
Variable types: 0 continuous, 33 integer (33 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 7.394737e+00, 57 iterations, 0.00 seconds

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

     0     0    7.39474    0   28    5.00000    7.39474  47.9%     -    0s
     0     0    7.00000    0   22    5.00000    7.00000  40.0%     -    0s
H    0     0                       6.0000000    7.00000  16.7%     -    0s
     0     0     cutoff    0         6.00000    6.99999  16.7%     -    0s

Cutting planes:
  Gomory: 2
  Clique: 3
  Zero half: 30

Explored 0 nodes (94 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%