Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:14:54 2012

Optimize a model with 7991 rows, 2970 columns and 26674 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.16s
Presolved: 7989 rows, 2968 columns, 26378 nonzeros
Variable types: 0 continuous, 2968 integer (2968 binary)
Found heuristic solution: objective 54.0000000

Root relaxation: objective 2.000000e+00, 2308 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  108   54.00000    2.00000  96.3%     -    0s
H    0     0                      53.0000000    2.00000  96.2%     -    0s
H    0     0                       4.0000000    2.00000  50.0%     -    0s
     0     0    2.66667    0 1847    4.00000    2.66667  33.3%     -    0s
     0     0    2.66667    0 1847    4.00000    2.66667  33.3%     -    1s
     0     0    2.66667    0  249    4.00000    2.66667  33.3%     -    5s
     0     0    2.68421    0 2198    4.00000    2.68421  32.9%     -    7s
     0     0    2.68421    0 2233    4.00000    2.68421  32.9%     -    8s
     0     0    2.68421    0 2246    4.00000    2.68421  32.9%     -   10s
     0     0    2.68421    0 2230    4.00000    2.68421  32.9%     -   12s
     0     0    2.68421    0 2225    4.00000    2.68421  32.9%     -   14s
     0     0    2.68421    0 2208    4.00000    2.68421  32.9%     -   16s
     0     0    2.68421    0 2208    4.00000    2.68421  32.9%     -   19s
     0     1    3.00000    0 2208    4.00000    3.00000  25.0%     -   24s
     7     2    3.00000    3   96    4.00000    3.00000  25.0%  1746   25s

Cutting planes:
  Clique: 96
  Zero half: 5

Explored 16 nodes (90184 simplex iterations) in 25.83 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%