Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:08:33 2012

Optimize a model with 1769 rows, 930 columns and 6088 nonzeros
Presolve removed 512 rows and 2 columns
Presolve time: 0.07s
Presolved: 1287 rows, 928 columns, 5764 nonzeros
Variable types: 0 continuous, 928 integer (928 binary)
Found heuristic solution: objective 30.0000000

Root relaxation: objective 3.000000e+00, 976 iterations, 0.03 seconds

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

     0     0    3.00000    0  108   30.00000    3.00000  90.0%     -    0s
H    0     0                      12.0000000    3.00000  75.0%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
     0     0    3.00000    0  114    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   51    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   50    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   52    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   26    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   65    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   65    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   65    4.00000    3.00000  25.0%     -    1s
     0     2    3.00000    0   65    4.00000    3.00000  25.0%     -    1s

Cutting planes:
  Gomory: 2
  Zero half: 2

Explored 8 nodes (31910 simplex iterations) in 3.35 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%