Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:42:30 2012

Optimize a model with 5849 rows, 2070 columns and 19393 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.09s
Presolved: 5892 rows, 2068 columns, 21308 nonzeros
Variable types: 0 continuous, 2068 integer (2068 binary)
Found heuristic solution: objective 45.0000000

Root relaxation: objective 2.666667e+00, 3590 iterations, 0.40 seconds

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

     0     0    2.66667    0  116   45.00000    2.66667  94.1%     -    1s
H    0     0                      20.0000000    2.66667  86.7%     -    1s
H    0     0                       5.0000000    2.66667  46.7%     -    1s
     0     0    2.72874    0  685    5.00000    2.72874  45.4%     -    1s
H    0     0                       4.0000000    2.72874  31.8%     -    2s
     0     0    2.73905    0  688    4.00000    2.73905  31.5%     -    2s
     0     0    2.73905    0  685    4.00000    2.73905  31.5%     -    2s
     0     0    2.73905    0  690    4.00000    2.73905  31.5%     -    2s
     0     0    2.80499    0 1577    4.00000    2.80499  29.9%     -    4s
     0     0    2.82759    0  490    4.00000    2.82759  29.3%     -    5s

Cutting planes:
  Gomory: 1
  Clique: 11
  Zero half: 4

Explored 0 nodes (26710 simplex iterations) in 5.57 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%