Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:10:54 2012

Optimize a model with 2591 rows, 1332 columns and 8926 nonzeros
Presolve removed 722 rows and 2 columns
Presolve time: 0.10s
Presolved: 1905 rows, 1330 columns, 8390 nonzeros
Variable types: 0 continuous, 1330 integer (1330 binary)
Found heuristic solution: objective 36.0000000

Root relaxation: objective 3.000000e+00, 1687 iterations, 0.08 seconds

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

     0     0    3.00000    0   26   36.00000    3.00000  91.7%     -    0s
H    0     0                      29.0000000    3.00000  89.7%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
     0     0    3.00000    0   44    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   62    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   90    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   80    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   73    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   62    4.00000    3.00000  25.0%     -    1s
     0     2    3.00000    0   62    4.00000    3.00000  25.0%     -    2s
    10    10    3.00000   16   34    4.00000    3.00000  25.0%  2104    5s

Cutting planes:
  Gomory: 3
  Clique: 1
  Zero half: 4

Explored 16 nodes (45736 simplex iterations) in 5.80 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%