Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:11:11 2012

Optimize a model with 2886 rows, 1406 columns and 9916 nonzeros
Presolve removed 666 rows and 0 columns
Presolve time: 0.05s
Presolved: 2220 rows, 1406 columns, 8399 nonzeros
Variable types: 0 continuous, 1406 integer (1406 binary)
Found heuristic solution: objective 24.0000000

Root relaxation: objective 3.000000e+00, 2067 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   53   24.00000    3.00000  87.5%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
     0     0    3.00000    0  168    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   69    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   97    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   88    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0  104    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0  104    4.00000    3.00000  25.0%     -    1s
     0     2    3.00000    0   84    4.00000    3.00000  25.0%     -    2s
     8     7    3.00000    1   86    4.00000    3.00000  25.0%   115    5s

Cutting planes:
  Gomory: 10
  Zero half: 25

Explored 19 nodes (53877 simplex iterations) in 7.10 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%