Gurobi 5.0.1 (linux64) logging started Fri Nov 16 08:43:10 2012

Optimize a model with 13695 rows, 4160 columns and 44926 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.41s
Presolved: 13757 rows, 4158 columns, 48594 nonzeros
Variable types: 0 continuous, 4158 integer (4158 binary)
Found heuristic solution: objective 64.0000000

Root relaxation: objective 2.000000e+00, 2901 iterations, 0.10 seconds

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

     0     0    2.00000    0  128   64.00000    2.00000  96.9%     -    0s
H    0     0                      57.0000000    2.00000  96.5%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
H    0     0                       4.0000000    2.00000  50.0%     -    0s
     0     0    3.00000    0 2467    4.00000    3.00000  25.0%     -    2s
     0     0     cutoff    0         4.00000    3.00001  25.0%     -    2s

Cutting planes:
  Clique: 47
  Zero half: 2

Explored 0 nodes (16157 simplex iterations) in 2.85 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%