Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:40:11 2012

Optimize a model with 60878 rows, 49952 columns and 231472 nonzeros
Presolve removed 1803 rows and 3793 columns
Presolve time: 4.47s
Presolved: 59075 rows, 46159 columns, 222691 nonzeros
Variable types: 0 continuous, 46159 integer (46159 binary)
Found heuristic solution: objective 223.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   32640    3.0000859e+00   5.747541e+01   0.000000e+00      5s
   36729    3.0000916e+00   3.064201e+01   0.000000e+00     10s
   40959    3.0000964e+00   9.558177e+00   0.000000e+00     15s
   44484    3.0001003e+00   1.997325e+02   0.000000e+00     20s
   48150    3.0001022e+00   1.093973e+01   0.000000e+00     25s
   51094    3.0000000e+00   0.000000e+00   0.000000e+00     30s

Root relaxation: objective 3.000000e+00, 51094 iterations, 29.63 seconds
Total elapsed time = 74.85s
Total elapsed time = 78.87s
Total elapsed time = 81.17s

    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%     -   81s

Explored 0 nodes (123097 simplex iterations) in 81.45 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%