Gurobi 5.0.1 (linux64) logging started Sat Dec  8 02:36:14 2012

Optimize a model with 825 rows, 810 columns and 2948 nonzeros
Presolve removed 160 rows and 42 columns
Presolve time: 0.00s
Presolved: 665 rows, 768 columns, 2607 nonzeros
Variable types: 687 continuous, 81 integer (81 binary)

Root relaxation: objective 2.928240e+04, 141 iterations, 0.00 seconds

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

     0     0 29282.4006    0   16          - 29282.4006     -      -    0s
H    0     0                    33023.000000 29282.4006  11.3%     -    0s
     0     0 29378.6618    0   21 33023.0000 29378.6618  11.0%     -    0s
     0     0 29380.8791    0   23 33023.0000 29380.8791  11.0%     -    0s
     0     0 29384.1208    0   24 33023.0000 29384.1208  11.0%     -    0s
     0     0 29385.6568    0   24 33023.0000 29385.6568  11.0%     -    0s
     0     0 29385.6602    0   23 33023.0000 29385.6602  11.0%     -    0s
H    0     0                    31025.000000 29385.6602  5.28%     -    0s
     0     2 29388.1634    0   23 31025.0000 29388.1634  5.28%     -    0s
H   27    24                    30239.000000 29464.9447  2.56%   6.7    0s
H  110    70                    30086.000000 29592.5295  1.64%   7.3    0s
H  137    36                    29815.000000 29600.4289  0.72%   6.8    0s

Cutting planes:
  Gomory: 5
  Flow cover: 21

Explored 247 nodes (1793 simplex iterations) in 0.16 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.981500000000e+04, best bound 2.981500000000e+04, gap 0.0%