Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:34:02 2012

Optimize a model with 51145 rows, 46010 columns and 198376 nonzeros
Presolve removed 462 rows and 6850 columns
Presolve time: 1.31s
Presolved: 50683 rows, 39160 columns, 189984 nonzeros
Variable types: 0 continuous, 39160 integer (39160 binary)
Found heuristic solution: objective 214.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   32052    3.0001040e+00   3.905000e+02   0.000000e+00      5s
   41150    3.0001286e+00   7.530000e+01   0.000000e+00     10s
   48179    3.0001393e+00   9.725000e+01   0.000000e+00     15s
   53419    3.0001449e+00   1.968750e+00   0.000000e+00     20s
   53736    3.0000000e+00   0.000000e+00   0.000000e+00     20s

Root relaxation: objective 3.000000e+00, 53736 iterations, 20.47 seconds
Total elapsed time = 43.43s
Total elapsed time = 70.11s

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

     0     0    3.00000    0   90  214.00000    3.00000  98.6%     -   71s
H    0     0                       3.0000000    3.00000   0.0%     -   71s

Explored 0 nodes (120108 simplex iterations) in 71.36 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%