Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:41:34 2012

Optimize a model with 56641 rows, 49952 columns and 218761 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 1.43s
Presolved: 56862 rows, 49950 columns, 267982 nonzeros
Variable types: 0 continuous, 49950 integer (49950 binary)
Found heuristic solution: objective 223.0000000
Found heuristic solution: objective 3.0000000

Root relaxation: objective 2.000000e+00, 498 iterations, 0.03 seconds

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

     0     0    2.00000    0  376    3.00000    2.00000  33.3%     -    1s
     0     0 infeasible    0         3.00000    2.00000  33.3%     -    1s

Explored 0 nodes (908 simplex iterations) in 1.79 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%