Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:34:11 2012

Optimize a model with 7436 rows, 2756 columns and 24856 nonzeros
Presolve time: 0.08s
Presolved: 7436 rows, 2756 columns, 25353 nonzeros
Variable types: 0 continuous, 2756 integer (2756 binary)
Found heuristic solution: objective 30.0000000

Root relaxation: objective 2.000000e+00, 2666 iterations, 0.08 seconds

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

     0     0    2.00000    0  104   30.00000    2.00000  93.3%     -    0s
H    0     0                      10.0000000    2.00000  80.0%     -    0s
H    0     0                       4.0000000    2.00000  50.0%     -    0s
     0     0    2.00000    0  104    4.00000    2.00000  50.0%     -    1s
     0     0    2.00000    0  104    4.00000    2.00000  50.0%     -    2s
     0     0    2.00000    0  104    4.00000    2.00000  50.0%     -    4s
     0     0    2.00000    0  104    4.00000    2.00000  50.0%     -    7s
     0     0    2.00000    0  104    4.00000    2.00000  50.0%     -    9s
     0     0    2.00000    0  104    4.00000    2.00000  50.0%     -   11s
     0     2    2.00000    0  104    4.00000    2.00000  50.0%     -   16s
     1     3    3.00000    1  307    4.00000    2.00000  50.0% 21404   20s
     2     4    3.00000    1  446    4.00000    3.00000  25.0% 26004   28s
     6     6     cutoff    4         4.00000    3.00000  25.0% 10410   30s
    28     4     cutoff    4         4.00000    3.00000  25.0%  3116   35s

Cutting planes:
  Clique: 114

Explored 43 nodes (153832 simplex iterations) in 39.22 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%