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

Optimize a model with 811 rows, 57 columns and 1622 nonzeros
Presolve removed 576 rows and 0 columns
Presolve time: 0.01s
Presolved: 235 rows, 57 columns, 1341 nonzeros
Variable types: 0 continuous, 57 integer (57 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.012508e+01, 145 iterations, 0.00 seconds

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

     0     0   10.12508    0   51    6.00000   10.12508  68.8%     -    0s
H    0     0                       7.0000000   10.12508  44.6%     -    0s
     0     0    9.80744    0   55    7.00000    9.80744  40.1%     -    0s
     0     0    9.72493    0   55    7.00000    9.72493  38.9%     -    0s
     0     0    9.70047    0   57    7.00000    9.70047  38.6%     -    0s
     0     0    9.69407    0   56    7.00000    9.69407  38.5%     -    0s
     0     0    9.69203    0   56    7.00000    9.69203  38.5%     -    0s
     0     2    9.68887    0   56    7.00000    9.68887  38.4%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 28
  Zero half: 5

Explored 27 nodes (1239 simplex iterations) in 0.11 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%