Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:30:14 2013

Optimize a model with 1165 rows, 24290 columns and 1107497 nonzeros
Presolve removed 16 rows and 71 columns
Presolve time: 2.33s
Presolved: 1149 rows, 24219 columns, 1104612 nonzeros
Variable types: 0 continuous, 24219 integer (24219 binary)
Found heuristic solution: objective 11985.000000

Root relaxation: objective 8.597286e+03, 5982 iterations, 2.75 seconds

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

     0     0 8597.28571    0   93 11985.0000 8597.28571  28.3%     -    5s
H    0     0                    10644.000000 8597.28571  19.2%     -    6s
H    0     0                    8645.0000000 8597.28571  0.55%     -    6s
     0     0 8614.92857    0  152 8645.00000 8614.92857  0.35%     -    8s
H    0     0                    8641.0000000 8614.92857  0.30%     -   12s
     0     0 8614.92857    0  112 8641.00000 8614.92857  0.30%     -   14s
     0     0 8621.33333    0   93 8641.00000 8621.33333  0.23%     -   15s
     0     2 8623.49020    0   93 8641.00000 8623.49020  0.20%     -   19s
H    1     1                    8633.0000000 8623.49020  0.11%   258   27s
H    4     3                    8627.0000000 8627.00000   0.0%  64.5   29s

Cutting planes:
  Clique: 2
  MIR: 1
  Zero half: 4

Explored 4 nodes (18884 simplex iterations) in 29.77 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.627000000000e+03, best bound 8.627000000000e+03, gap 0.0%