Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:45:17 2012

Optimize a model with 1799 rows, 86 columns and 3598 nonzeros
Presolve removed 1281 rows and 0 columns
Presolve time: 0.05s
Presolved: 518 rows, 86 columns, 3290 nonzeros
Variable types: 0 continuous, 86 integer (86 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.316885e+01, 275 iterations, 0.01 seconds

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

     0     0   13.16885    0   80    7.00000   13.16885  88.1%     -    0s
H    0     0                       8.0000000   13.16885  64.6%     -    0s
     0     0   12.80965    0   83    8.00000   12.80965  60.1%     -    0s
     0     0   12.71758    0   84    8.00000   12.71758  59.0%     -    0s
     0     0   12.68283    0   84    8.00000   12.68283  58.5%     -    0s
H    0     0                       9.0000000   12.68283  40.9%     -    0s
     0     0   12.64669    0   84    9.00000   12.64669  40.5%     -    0s
     0     0   12.59178    0   85    9.00000   12.59178  39.9%     -    0s
     0     0   12.57984    0   86    9.00000   12.57984  39.8%     -    0s
     0     0   12.57772    0   86    9.00000   12.57772  39.8%     -    0s
     0     0   12.57696    0   86    9.00000   12.57696  39.7%     -    0s
     0     0   12.57692    0   86    9.00000   12.57692  39.7%     -    0s
     0     2   12.57424    0   86    9.00000   12.57424  39.7%     -    0s

Cutting planes:
  Clique: 59
  Zero half: 1

Explored 55 nodes (4614 simplex iterations) in 0.76 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%