Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:29:22 2012

Optimize a model with 8006 rows, 2652 columns and 26416 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.15s
Presolved: 8055 rows, 2650 columns, 28703 nonzeros
Variable types: 0 continuous, 2650 integer (2650 binary)
Found heuristic solution: objective 51.0000000

Root relaxation: objective 2.000000e+00, 2064 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                      49.0000000    2.00000  95.9%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    3.00000    0  112    5.00000    3.00000  40.0%     -    1s
     0     0    3.01031    0 1919    5.00000    3.01031  39.8%     -    1s
H    0     0                       4.0000000    3.01031  24.7%     -    1s

Cutting planes:
  Clique: 33
  Zero half: 1

Explored 0 nodes (11452 simplex iterations) in 2.00 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%