Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:16:30 2013

Optimize a model with 1508 rows, 43043 columns and 1932776 nonzeros
Presolve removed 33 rows and 239 columns (presolve time = 5s) ...
Presolve removed 39 rows and 403 columns (presolve time = 11s) ...
Presolve removed 39 rows and 403 columns
Presolve time: 11.20s
Presolved: 1469 rows, 42640 columns, 1912312 nonzeros
Variable types: 0 continuous, 42640 integer (42640 binary)
Found heuristic solution: objective 19851.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    9408    1.4775152e+04   2.796184e+02   0.000000e+00      5s
   13203    1.4840200e+04   2.552381e+00   0.000000e+00     10s
   13380    1.4840200e+04   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 1.484020e+04, 13380 iterations, 10.46 seconds

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

     0     0 14840.2000    0  141 19851.0000 14840.2000  25.2%     -   23s
H    0     0                    15949.000000 14840.2000  6.95%     -   27s
*    0     0               0    14854.000000 14854.0000   0.0%     -   29s

Cutting planes:
  Clique: 16
  Zero half: 23

Explored 0 nodes (14650 simplex iterations) in 29.99 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.485400000000e+04, best bound 1.485400000000e+04, gap 0.0%