Gurobi 5.0.1 (linux64) logging started Fri Nov 16 12:05:50 2012

Optimize a model with 16329 rows, 5112 columns and 53745 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.56s
Presolved: 16327 rows, 5110 columns, 53285 nonzeros
Variable types: 0 continuous, 5110 integer (5110 binary)
Found heuristic solution: objective 71.0000000

Root relaxation: objective 2.000000e+00, 3601 iterations, 0.14 seconds

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

     0     0    2.00000    0  142   71.00000    2.00000  97.2%     -    1s
H    0     0                      70.0000000    2.00000  97.1%     -    1s
H    0     0                       5.0000000    2.00000  60.0%     -    1s
     0     0    2.66667    0  394    5.00000    2.66667  46.7%     -    7s
     0     0    2.66990    0 4466    5.00000    2.66990  46.6%     -    8s
     0     0    2.66990    0 4402    5.00000    2.66990  46.6%     -   11s
     0     0    2.66990    0 4400    5.00000    2.66990  46.6%     -   11s
     0     0    2.66990    0 4399    5.00000    2.66990  46.6%     -   12s
     0     0    2.66990    0 4053    5.00000    2.66990  46.6%     -   14s
     0     2    2.66990    0 4053    5.00000    2.66990  46.6%     -   22s
H   27     4                       4.0000000    3.00000  25.0%   278   23s

Cutting planes:
  Clique: 115
  Zero half: 2

Explored 32 nodes (52204 simplex iterations) in 24.83 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%