Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:41:48 2012

Optimize a model with 62216 rows, 49952 columns and 235486 nonzeros
Presolve removed 3124 rows and 2 columns
Presolve time: 4.87s
Presolved: 59315 rows, 49950 columns, 276880 nonzeros
Variable types: 0 continuous, 49950 integer (49950 binary)
Found heuristic solution: objective 223.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   29194    3.0000835e+00   5.000000e+01   0.000000e+00      5s
   33714    3.0000863e+00   5.169116e+02   0.000000e+00     10s
   37521    3.0000914e+00   2.155877e+02   0.000000e+00     15s
   41187    3.0000960e+00   1.642073e+01   0.000000e+00     20s
   44853    3.0001006e+00   2.187479e+01   0.000000e+00     25s
   48519    3.0001067e+00   1.889242e+01   0.000000e+00     30s
   50550    3.0000000e+00   0.000000e+00   0.000000e+00     33s

Root relaxation: objective 3.000000e+00, 50550 iterations, 32.70 seconds
Total elapsed time = 85.15s
Total elapsed time = 90.13s

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

*    0     0               0       3.0000000    3.00000   0.0%     -   91s

Explored 0 nodes (137027 simplex iterations) in 91.57 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%