Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:28 2012

Optimize a model with 860 rows, 60 columns and 1720 nonzeros
Presolve removed 599 rows and 0 columns
Presolve time: 0.01s
Presolved: 261 rows, 60 columns, 1425 nonzeros
Variable types: 0 continuous, 60 integer (60 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.060072e+01, 124 iterations, 0.00 seconds

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

     0     0   10.60072    0   54    6.00000   10.60072  76.7%     -    0s
H    0     0                       7.0000000   10.60072  51.4%     -    0s
     0     0   10.29493    0   55    7.00000   10.29493  47.1%     -    0s
     0     0   10.20341    0   58    7.00000   10.20341  45.8%     -    0s
     0     0   10.17550    0   57    7.00000   10.17550  45.4%     -    0s
H    0     0                       8.0000000   10.17550  27.2%     -    0s
     0     0   10.15729    0   58    8.00000   10.15729  27.0%     -    0s
     0     0   10.14716    0   58    8.00000   10.14716  26.8%     -    0s
     0     0   10.11754    0   59    8.00000   10.11754  26.5%     -    0s
     0     0   10.11651    0   59    8.00000   10.11651  26.5%     -    0s
     0     0   10.11532    0   59    8.00000   10.11532  26.4%     -    0s
     0     2   10.11335    0   59    8.00000   10.11335  26.4%     -    0s

Cutting planes:
  Clique: 25
  Zero half: 7

Explored 19 nodes (904 simplex iterations) in 0.14 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%