Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:56:50 2012

Optimize a model with 51862 rows, 47306 columns and 201808 nonzeros
Presolve removed 467 rows and 6729 columns
Presolve time: 1.31s
Presolved: 51395 rows, 40577 columns, 193522 nonzeros
Variable types: 0 continuous, 40577 integer (40577 binary)
Found heuristic solution: objective 217.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   30375    3.0000714e+00   5.400000e+01   0.000000e+00      5s
   35919    3.0000775e+00   1.139741e+02   0.000000e+00     10s
   40275    3.0000814e+00   3.984103e+01   0.000000e+00     15s
   44631    3.0000851e+00   4.251865e+00   0.000000e+00     20s
   48855    3.0000868e+00   5.548673e+00   0.000000e+00     25s
   49551    3.0000000e+00   0.000000e+00   0.000000e+00     26s

Root relaxation: objective 3.000000e+00, 49551 iterations, 25.90 seconds
Total elapsed time = 55.61s

    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%     -   57s

Explored 0 nodes (106759 simplex iterations) in 57.19 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%