Gurobi 5.0.1 (linux64) logging started Sat Nov 17 06:29:24 2012

Optimize a model with 68837 rows, 53592 columns and 258949 nonzeros
Presolve removed 947 rows and 5313 columns (presolve time = 5s) ...
Presolve removed 949 rows and 5315 columns
Presolve time: 5.09s
Presolved: 67888 rows, 48277 columns, 250738 nonzeros
Variable types: 0 continuous, 48277 integer (48277 binary)
Found heuristic solution: objective 231.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   35028    3.0000683e+00   1.457500e+03   0.000000e+00      5s
   41586    3.0000986e+00   1.465949e+02   0.000000e+00     10s
   46284    3.0001139e+00   4.515789e+01   0.000000e+00     15s
   50484    3.0001206e+00   3.923309e+01   0.000000e+00     20s
   52086    3.0000000e+00   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 3.000000e+00, 52086 iterations, 22.86 seconds
Total elapsed time = 78.72s
Total elapsed time = 142.92s
Total elapsed time = 159.95s
Total elapsed time = 161.87s

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

     0     0    3.00000    0  102  231.00000    3.00000  98.7%     -  162s
H    0     0                       4.0000000    3.00000  25.0%     -  162s
H    0     0                       3.0000000    3.00000   0.0%     -  162s

Explored 0 nodes (196298 simplex iterations) in 162.36 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%