Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:39:31 2012

Optimize a model with 8524 rows, 3080 columns and 28378 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.18s
Presolved: 8577 rows, 3078 columns, 31093 nonzeros
Variable types: 0 continuous, 3078 integer (3078 binary)
Found heuristic solution: objective 55.0000000

Root relaxation: objective 2.000000e+00, 2339 iterations, 0.07 seconds

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

     0     0    2.00000    0  110   55.00000    2.00000  96.4%     -    0s
H    0     0                      49.0000000    2.00000  95.9%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.66667    0 2206    5.00000    2.66667  46.7%     -    1s
H    0     0                       4.0000000    2.66667  33.3%     -    1s
     0     0    2.66667    0  172    4.00000    2.66667  33.3%     -    3s
     0     2    2.66667    0  123    4.00000    2.66667  33.3%     -    4s
     1     3    3.00000    1   96    4.00000    2.66667  33.3%  2140    5s

Cutting planes:
  Clique: 42
  Zero half: 2

Explored 21 nodes (28479 simplex iterations) in 5.95 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%