Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:00:12 2012

Optimize a model with 3819 rows, 123 columns and 7638 nonzeros
Presolve removed 2726 rows and 0 columns
Presolve time: 0.13s
Presolved: 1093 rows, 123 columns, 7728 nonzeros
Variable types: 0 continuous, 123 integer (123 binary)
Found heuristic solution: objective 8.0000000

Root relaxation: objective 1.607953e+01, 545 iterations, 0.03 seconds

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

     0     0   16.07953    0  118    8.00000   16.07953   101%     -    0s
     0     0   15.61297    0  122    8.00000   15.61297  95.2%     -    0s
     0     0   15.56751    0  121    8.00000   15.56751  94.6%     -    0s
     0     0   15.53591    0  123    8.00000   15.53591  94.2%     -    0s
H    0     0                       9.0000000   15.53591  72.6%     -    0s
     0     0   15.52133    0  123    9.00000   15.52133  72.5%     -    0s
     0     0   15.51897    0  123    9.00000   15.51897  72.4%     -    1s
     0     0   15.51885    0  123    9.00000   15.51885  72.4%     -    1s
     0     0   15.51788    0  123    9.00000   15.51788  72.4%     -    1s
     0     2   15.51323    0  123    9.00000   15.51323  72.4%     -    1s

Cutting planes:
  Clique: 111
  Zero half: 1

Explored 617 nodes (38401 simplex iterations) in 4.52 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%