Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:24:43 2012

Optimize a model with 3989 rows, 1806 columns and 13564 nonzeros
Presolve removed 842 rows and 2 columns
Presolve time: 0.11s
Presolved: 3189 rows, 1804 columns, 13246 nonzeros
Variable types: 0 continuous, 1804 integer (1804 binary)
Found heuristic solution: objective 42.0000000

Root relaxation: objective 3.000000e+00, 2441 iterations, 0.19 seconds

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

     0     0    3.00000    0  168   42.00000    3.00000  92.9%     -    0s
H    0     0                      39.0000000    3.00000  92.3%     -    0s
H    0     0                      14.0000000    3.00000  78.6%     -    0s
*    0     0               0       3.0000000    3.00000   0.0%     -    1s

Cutting planes:
  Gomory: 1
  Zero half: 13

Explored 0 nodes (9114 simplex iterations) in 1.13 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%