Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:17 2012

Optimize a model with 582 rows, 49 columns and 1164 nonzeros
Presolve removed 400 rows and 0 columns
Presolve time: 0.01s
Presolved: 182 rows, 49 columns, 979 nonzeros
Variable types: 0 continuous, 49 integer (49 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 9.303779e+00, 94 iterations, 0.00 seconds

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

     0     0    9.30378    0   43    7.00000    9.30378  32.9%     -    0s
H    0     0                       8.0000000    9.30378  16.3%     -    0s
     0     0     cutoff    0         8.00000    8.99999  12.5%     -    0s

Cutting planes:
  Gomory: 2
  Clique: 16
  Zero half: 38

Explored 0 nodes (129 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%