Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:23:02 2012

Optimize a model with 60224 rows, 48180 columns and 227758 nonzeros
Presolve removed 462 rows and 4820 columns
Presolve time: 4.18s
Presolved: 59762 rows, 43360 columns, 221299 nonzeros
Variable types: 0 continuous, 43360 integer (43360 binary)
Found heuristic solution: objective 219.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   35839    3.0000833e+00   1.875000e+02   0.000000e+00      5s
   41928    3.0000928e+00   2.112791e+02   0.000000e+00     10s
   45762    3.0000963e+00   1.848984e+01   0.000000e+00     15s
   49596    3.0000997e+00   2.113750e+02   0.000000e+00     20s
   53430    3.0001051e+00   1.252825e+01   0.000000e+00     25s
   54519    3.0000000e+00   0.000000e+00   0.000000e+00     26s

Root relaxation: objective 3.000000e+00, 54519 iterations, 26.35 seconds
Total elapsed time = 72.13s

    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%     -   78s

Explored 0 nodes (115679 simplex iterations) in 79.00 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%