Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:05:25 2013

Optimize a model with 1631 rows, 45298 columns and 2287356 nonzeros
Presolve removed 25 rows and 173 columns (presolve time = 5s) ...
Presolve removed 25 rows and 173 columns
Presolve time: 7.09s
Presolved: 1606 rows, 45125 columns, 2279159 nonzeros
Variable types: 0 continuous, 45125 integer (45125 binary)
Found heuristic solution: objective 18316.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7959    1.5362143e+04   5.052543e+02   0.000000e+00      5s
   10643    1.5395417e+04   2.694830e+01   0.000000e+00     10s
   10737    1.5395583e+04   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 1.539558e+04, 10737 iterations, 10.37 seconds

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

     0     0 15395.5833    0  157 18316.0000 15395.5833  15.9%     -   19s
H    0     0                    15668.000000 15395.5833  1.74%     -   23s
     0     0 15400.0000    0  140 15668.0000 15400.0000  1.71%     -   27s
H    0     0                    15662.000000 15400.0000  1.67%     -   40s
     0     0 15400.0000    0  111 15662.0000 15400.0000  1.67%     -   51s
H    0     0                    15587.000000 15400.0000  1.20%     -   53s
     0     0 15400.0000    0   75 15587.0000 15400.0000  1.20%     -   56s
*    0     0               0    15404.000000 15404.0000   0.0%     -   58s

Cutting planes:
  Clique: 14
  Zero half: 45

Explored 0 nodes (28555 simplex iterations) in 58.49 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.540400000000e+04, best bound 1.540400000000e+04, gap 0.0%