Gurobi 5.0.1 (linux64) logging started Sat Nov 17 09:01:47 2012

Optimize a model with 72540 rows, 58322 columns and 274738 nonzeros
Presolve removed 1948 rows and 4820 columns (presolve time = 5s) ...
Presolve removed 1950 rows and 4822 columns
Presolve time: 6.33s
Presolved: 70590 rows, 53500 columns, 264512 nonzeros
Variable types: 0 continuous, 53500 integer (53500 binary)
Found heuristic solution: objective 241.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   32488    3.0000939e+00   2.256098e+01   0.000000e+00      5s
   35854    3.0000970e+00   1.761969e+02   0.000000e+00     10s
   38761    3.0000995e+00   9.702309e+01   0.000000e+00     15s
   41974    3.0001023e+00   3.827150e+01   0.000000e+00     20s
   45493    3.0001063e+00   1.732484e+01   0.000000e+00     25s
   49012    3.0001134e+00   9.557801e+00   0.000000e+00     30s
   52072    3.0001181e+00   1.103885e+00   0.000000e+00     35s
   52331    3.0000000e+00   0.000000e+00   0.000000e+00     36s

Root relaxation: objective 3.000000e+00, 52331 iterations, 35.55 seconds
Total elapsed time = 85.19s

    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%     -   90s

Explored 0 nodes (137024 simplex iterations) in 90.80 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%