Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:26:19 2012

Optimize a model with 7853 rows, 2652 columns and 25957 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.15s
Presolved: 7851 rows, 2650 columns, 25649 nonzeros
Variable types: 0 continuous, 2650 integer (2650 binary)
Found heuristic solution: objective 51.0000000

Root relaxation: objective 2.000000e+00, 1921 iterations, 0.06 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                      48.0000000    2.00000  95.8%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.66667    0  500    5.00000    2.66667  46.7%     -    0s
     0     0    3.00000    0  120    5.00000    3.00000  40.0%     -    1s
H    0     0                       4.0000000    3.00000  25.0%     -    1s
     0     0    3.00000    0   86    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0  126    4.00000    3.00000  25.0%     -    1s
     0     0 infeasible    0         4.00000    3.00001  25.0%     -    1s

Cutting planes:
  Gomory: 6
  Zero half: 130

Explored 0 nodes (13803 simplex iterations) in 1.91 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%