Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:26:39 2012

Optimize a model with 7088 rows, 2652 columns and 23662 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.13s
Presolved: 7086 rows, 2650 columns, 23384 nonzeros
Variable types: 0 continuous, 2650 integer (2650 binary)
Found heuristic solution: objective 51.0000000

Root relaxation: objective 2.000000e+00, 1894 iterations, 0.05 seconds

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

     0     0    2.00000    0  102   51.00000    2.00000  96.1%     -    0s
H    0     0                      45.0000000    2.00000  95.6%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.66667    0 1829    5.00000    2.66667  46.7%     -    0s
     0     0    2.66667    0  239    5.00000    2.66667  46.7%     -    2s
H    0     0                       4.0000000    2.66667  33.3%     -    2s
     0     2    2.66667    0  140    4.00000    2.66667  33.3%     -    4s

Cutting planes:
  Clique: 54
  Zero half: 1

Explored 9 nodes (19766 simplex iterations) in 4.63 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%