Gurobi 5.0.1 (linux64) logging started Fri Nov 16 08:07:53 2012

Optimize a model with 11654 rows, 4032 columns and 38680 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.32s
Presolved: 11652 rows, 4030 columns, 38310 nonzeros
Variable types: 0 continuous, 4030 integer (4030 binary)
Found heuristic solution: objective 63.0000000

Root relaxation: objective 2.000000e+00, 2855 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  126   63.00000    2.00000  96.8%     -    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  182    5.00000    2.66667  46.7%     -    1s
     0     0    2.67033    0 3499    5.00000    2.67033  46.6%     -    2s
     0     0    2.67033    0 3506    5.00000    2.67033  46.6%     -    4s
     0     0    2.67033    0 3215    5.00000    2.67033  46.6%     -   10s
     0     0    2.67033    0 3280    5.00000    2.67033  46.6%     -   15s
     0     0    2.67033    0 3298    5.00000    2.67033  46.6%     -   20s
     0     0    2.67033    0 3310    5.00000    2.67033  46.6%     -   25s
     0     0    2.67033    0 3327    5.00000    2.67033  46.6%     -   30s
     0     0    2.67033    0 3312    5.00000    2.67033  46.6%     -   35s
     0     2    2.80000    0 3312    5.00000    2.80000  44.0%     -   45s
*   23     4              10       4.0000000    4.00000   0.0%  1065   48s

Cutting planes:
  Clique: 69
  Zero half: 4

Explored 24 nodes (121165 simplex iterations) in 48.37 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%