Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:34:45 2012

Optimize a model with 57087 rows, 49952 columns and 220099 nonzeros
Presolve removed 19 rows and 3793 columns
Presolve time: 1.47s
Presolved: 57068 rows, 46159 columns, 215796 nonzeros
Variable types: 0 continuous, 46159 integer (46159 binary)
Found heuristic solution: objective 223.0000000

Root relaxation: objective 2.000000e+00, 30807 iterations, 2.68 seconds
Total elapsed time = 8.64s

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

     0     0    2.00000    0  376  223.00000    2.00000  99.1%     -    9s
H    0     0                     220.0000000    2.00000  99.1%     -   10s
H    0     0                       4.0000000    2.00000  50.0%     -   10s
     0     0    2.20000    0 2667    4.00000    2.20000  45.0%     -   45s
H    0     0                       3.0000000    2.20000  26.7%     -   46s

Cutting planes:
  Zero half: 10

Explored 0 nodes (141226 simplex iterations) in 46.75 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%