Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:14 2012

Optimize a model with 421 rows, 42 columns and 842 nonzeros
Presolve removed 276 rows and 0 columns
Presolve time: 0.00s
Presolved: 145 rows, 42 columns, 738 nonzeros
Variable types: 0 continuous, 42 integer (42 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 8.487805e+00, 77 iterations, 0.00 seconds

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

     0     0    8.48780    0   35    5.00000    8.48780  69.8%     -    0s
H    0     0                       6.0000000    8.48780  41.5%     -    0s
     0     0    8.17616    0   38    6.00000    8.17616  36.3%     -    0s
H    0     0                       7.0000000    8.17616  16.8%     -    0s
     0     0    8.11267    0   38    7.00000    8.11267  15.9%     -    0s
     0     0    8.04540    0   37    7.00000    8.04540  14.9%     -    0s
     0     0     cutoff    0         7.00000    7.99999  14.3%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 10
  Zero half: 9

Explored 0 nodes (179 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%