Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:21 2012

Optimize a model with 705 rows, 54 columns and 1410 nonzeros
Presolve removed 490 rows and 0 columns
Presolve time: 0.01s
Presolved: 215 rows, 54 columns, 1217 nonzeros
Variable types: 0 continuous, 54 integer (54 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 9.860622e+00, 123 iterations, 0.00 seconds

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

     0     0    9.86062    0   48    6.00000    9.86062  64.3%     -    0s
H    0     0                       8.0000000    9.86062  23.3%     -    0s
     0     0    9.38296    0   48    8.00000    9.38296  17.3%     -    0s
     0     0    9.32771    0   51    8.00000    9.32771  16.6%     -    0s
     0     0    9.25992    0   51    8.00000    9.25992  15.7%     -    0s
     0     0    9.24531    0   53    8.00000    9.24531  15.6%     -    0s
     0     0    9.24116    0   52    8.00000    9.24116  15.5%     -    0s
     0     0    9.23647    0   52    8.00000    9.23647  15.5%     -    0s
     0     2    9.23345    0   52    8.00000    9.23345  15.4%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 24
  Zero half: 4

Explored 5 nodes (407 simplex iterations) in 0.08 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%