Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:36:11 2013

Optimize a model with 1799 rows, 56472 columns and 2799390 nonzeros
Presolve removed 6 rows and 4 columns (presolve time = 5s) ...
Presolve removed 11 rows and 11 columns (presolve time = 10s) ...
Presolve removed 11 rows and 11 columns
Presolve time: 10.53s
Presolved: 1788 rows, 56461 columns, 2798369 nonzeros
Variable types: 0 continuous, 56461 integer (56461 binary)
Found heuristic solution: objective 27291.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7972    1.9941996e+04   2.155938e+02   0.000000e+00      5s
   11640    2.0068608e+04   1.991796e+03   0.000000e+00     10s
   14391    2.0099361e+04   9.630235e+01   0.000000e+00     15s
   14981    2.0103000e+04   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 2.010300e+04, 14981 iterations, 16.45 seconds

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

     0     0 20103.0000    0   64 27291.0000 20103.0000  26.3%     -   28s
H    0     0                    23305.000000 20103.0000  13.7%     -   32s
     0     0 20134.6190    0  173 23305.0000 20134.6190  13.6%     -   35s
H    0     0                    20332.000000 20134.6190  0.97%     -   36s
     0     0 20142.0000    0  163 20332.0000 20142.0000  0.93%     -   41s
     0     0 20142.0000    0   64 20332.0000 20142.0000  0.93%     -   74s
*    0     0               0    20145.000000 20145.0000   0.0%     -   78s

Cutting planes:
  Clique: 8
  Zero half: 5

Explored 0 nodes (33121 simplex iterations) in 78.67 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.014500000000e+04, best bound 2.014500000000e+04, gap 0.0%