Gurobi 5.0.1 (linux64) logging started Fri Nov 16 07:26:29 2012

Optimize a model with 11040 rows, 3782 columns and 36598 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.29s
Presolved: 11099 rows, 3780 columns, 39957 nonzeros
Variable types: 0 continuous, 3780 integer (3780 binary)
Found heuristic solution: objective 61.0000000

Root relaxation: objective 2.000000e+00, 2739 iterations, 0.09 seconds

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

     0     0    2.00000    0  122   61.00000    2.00000  96.7%     -    0s
H    0     0                      58.0000000    2.00000  96.6%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.66667    0 2208    5.00000    2.66667  46.7%     -    1s
     0     0    2.66667    0  219    5.00000    2.66667  46.7%     -    4s
H    0     0                       4.0000000    2.66667  33.3%     -    6s
     0     2    2.66667    0  141    4.00000    2.66667  33.3%     -    9s
     1     3    3.00000    1  123    4.00000    2.66667  33.3%  7035   10s

Cutting planes:
  Clique: 56

Explored 13 nodes (45478 simplex iterations) in 13.09 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%