Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:20:07 2012

Optimize a model with 8801 rows, 2970 columns and 29104 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.18s
Presolved: 8853 rows, 2968 columns, 31694 nonzeros
Variable types: 0 continuous, 2968 integer (2968 binary)
Found heuristic solution: objective 54.0000000

Root relaxation: objective 2.000000e+00, 2142 iterations, 0.06 seconds

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

     0     0    2.00000    0  108   54.00000    2.00000  96.3%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.66667    0  250    5.00000    2.66667  46.7%     -    1s
H    0     0                       4.0000000    2.66667  33.3%     -    1s
     0     0    2.67974    0 2687    4.00000    2.67974  33.0%     -    1s
     0     0    2.67974    0 2687    4.00000    2.67974  33.0%     -    3s
     0     0    2.67974    0 2408    4.00000    2.67974  33.0%     -    6s
     0     0    2.67974    0 2306    4.00000    2.67974  33.0%     -    8s
     0     0    2.67974    0 2041    4.00000    2.67974  33.0%     -   11s
     0     0    2.67974    0 2268    4.00000    2.67974  33.0%     -   13s
     0     0    2.67974    0 2300    4.00000    2.67974  33.0%     -   15s
     0     0    2.67974    0 2392    4.00000    2.67974  33.0%     -   17s
     0     0    2.67974    0 2472    4.00000    2.67974  33.0%     -   19s
     0     0    2.67974    0 2467    4.00000    2.67974  33.0%     -   21s
     0     1    3.00000    0 2467    4.00000    3.00000  25.0%     -   25s

Cutting planes:
  Clique: 99
  Zero half: 15

Explored 10 nodes (81973 simplex iterations) in 26.88 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%