Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:16 2012

Optimize a model with 522 rows, 46 columns and 1044 nonzeros
Presolve removed 364 rows and 0 columns
Presolve time: 0.01s
Presolved: 158 rows, 46 columns, 869 nonzeros
Variable types: 0 continuous, 46 integer (46 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 8.443719e+00, 131 iterations, 0.00 seconds

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

     0     0    8.44372    0   44    6.00000    8.44372  40.7%     -    0s
H    0     0                       7.0000000    8.44372  20.6%     -    0s
     0     0    8.10792    0   43    7.00000    8.10792  15.8%     -    0s
     0     0     cutoff    0         7.00000    7.99999  14.3%     -    0s

Cutting planes:
  Clique: 19
  Zero half: 11

Explored 0 nodes (197 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%