Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:25 2012

Optimize a model with 828 rows, 57 columns and 1656 nonzeros
Presolve removed 585 rows and 0 columns
Presolve time: 0.01s
Presolved: 243 rows, 57 columns, 1475 nonzeros
Variable types: 0 continuous, 57 integer (57 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 9.823525e+00, 136 iterations, 0.00 seconds

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

     0     0    9.82353    0   52    7.00000    9.82353  40.3%     -    0s
     0     0    9.51087    0   52    7.00000    9.51087  35.9%     -    0s
     0     0    9.43298    0   50    7.00000    9.43298  34.8%     -    0s
     0     0    9.36283    0   54    7.00000    9.36283  33.8%     -    0s
     0     0    9.32754    0   54    7.00000    9.32754  33.3%     -    0s
     0     0    9.31872    0   55    7.00000    9.31872  33.1%     -    0s
     0     0    9.30484    0   55    7.00000    9.30484  32.9%     -    0s
     0     0    9.28730    0   54    7.00000    9.28730  32.7%     -    0s
     0     0    9.28414    0   55    7.00000    9.28414  32.6%     -    0s
     0     0    9.28238    0   55    7.00000    9.28238  32.6%     -    0s
     0     2    9.28220    0   55    7.00000    9.28220  32.6%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 32
  Zero half: 2

Explored 22 nodes (947 simplex iterations) in 0.15 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%