Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:27:05 2012

Optimize a model with 4127 rows, 1892 columns and 14059 nonzeros
Presolve removed 776 rows and 2 columns
Presolve time: 0.12s
Presolved: 3351 rows, 1890 columns, 12054 nonzeros
Variable types: 0 continuous, 1890 integer (1890 binary)
Found heuristic solution: objective 43.0000000

Root relaxation: objective 3.000000e+00, 2699 iterations, 0.20 seconds

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

     0     0    3.00000    0  140   43.00000    3.00000  93.0%     -    1s
H    0     0                      21.0000000    3.00000  85.7%     -    1s
H    0     0                       8.0000000    3.00000  62.5%     -    1s
H    0     0                       6.0000000    3.00000  50.0%     -    1s
     0     0    3.00000    0   67    6.00000    3.00000  50.0%     -    1s
H    0     0                       4.0000000    3.00000  25.0%     -    1s
H    0     0                       3.0000000    3.00000   0.0%     -    1s

Cutting planes:
  Gomory: 1
  Zero half: 7

Explored 0 nodes (13563 simplex iterations) in 1.60 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%