Gurobi 5.0.1 (linux64) logging started Sat Nov 17 04:26:44 2012

Optimize a model with 59889 rows, 51302 columns and 229840 nonzeros
Presolve removed 27 rows and 5652 columns
Presolve time: 1.41s
Presolved: 59862 rows, 45650 columns, 223660 nonzeros
Variable types: 0 continuous, 45650 integer (45650 binary)
Found heuristic solution: objective 226.0000000

Root relaxation: objective 2.000000e+00, 33057 iterations, 3.00 seconds
Total elapsed time = 9.13s

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

     0     0    2.00000    0  384  226.00000    2.00000  99.1%     -   10s
H    0     0                       4.0000000    2.00000  50.0%     -   10s
H    0     0                       3.0000000    2.00000  33.3%     -   10s
     0     0 infeasible    0         3.00000    2.00000  33.3%     -   11s

Cutting planes:
  Gomory: 1
  Zero half: 55

Explored 0 nodes (112973 simplex iterations) in 11.18 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%