Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:23:59 2012

Optimize a model with 50693 rows, 45582 columns and 196597 nonzeros
Presolve removed 666 rows and 5327 columns
Presolve time: 1.26s
Presolved: 50027 rows, 40255 columns, 189311 nonzeros
Variable types: 0 continuous, 40255 integer (40255 binary)
Found heuristic solution: objective 213.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   35249    3.0000767e+00   4.025000e+01   0.000000e+00      5s
   40882    3.0000888e+00   3.850214e+03   0.000000e+00     10s
   45991    3.0000943e+00   1.486557e+01   0.000000e+00     15s
   47538    3.0000000e+00   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 3.000000e+00, 47538 iterations, 16.27 seconds
Total elapsed time = 38.63s
Total elapsed time = 45.32s

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

     0     0    3.00000    0   76  213.00000    3.00000  98.6%     -   48s
H    0     0                       3.0000000    3.00000   0.0%     -   48s

Explored 0 nodes (125022 simplex iterations) in 48.47 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%