Gurobi 5.0.1 (linux64) logging started Sun Dec  9 06:11:53 2012

Optimize a model with 3000 rows, 2970 columns and 11318 nonzeros
Presolve removed 212 rows and 37 columns
Presolve time: 0.02s
Presolved: 2788 rows, 2933 columns, 10870 nonzeros
Variable types: 2759 continuous, 174 integer (174 binary)

Root relaxation: objective 5.860785e+04, 268 iterations, 0.00 seconds

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

     0     0 58607.8509    0   10          - 58607.8509     -      -    0s
H    0     0                    59558.000000 58607.8509  1.60%     -    0s
H    0     0                    59407.000000 58607.8509  1.35%     -    0s
     0     0 58706.8637    0   14 59407.0000 58706.8637  1.18%     -    0s
     0     0 58741.7621    0   16 59407.0000 58741.7621  1.12%     -    0s
     0     0 58757.2860    0   17 59407.0000 58757.2860  1.09%     -    0s
     0     0 58759.0069    0   14 59407.0000 58759.0069  1.09%     -    0s
     0     0 58759.2682    0   17 59407.0000 58759.2682  1.09%     -    0s
     0     0 58761.0206    0   19 59407.0000 58761.0206  1.09%     -    0s
     0     0 58761.2497    0   12 59407.0000 58761.2497  1.09%     -    0s
     0     0 58761.3352    0   19 59407.0000 58761.3352  1.09%     -    0s
     0     0 58761.4922    0   13 59407.0000 58761.4922  1.09%     -    0s
     0     0 58761.5242    0   21 59407.0000 58761.5242  1.09%     -    0s
H    0     0                    58961.000000 58761.5242  0.34%     -    0s
     0     0 58761.5312    0   21 58961.0000 58761.5312  0.34%     -    0s
     0     0 58762.8754    0   17 58961.0000 58762.8754  0.34%     -    0s
     0     0 58762.8754    0   10 58961.0000 58762.8754  0.34%     -    0s
     0     0 58762.8754    0   16 58961.0000 58762.8754  0.34%     -    0s
     0     0 58764.7004    0   17 58961.0000 58764.7004  0.33%     -    0s
     0     0 58766.3495    0   15 58961.0000 58766.3495  0.33%     -    0s
     0     0 58766.4879    0   18 58961.0000 58766.4879  0.33%     -    0s
     0     0 58766.9344    0   16 58961.0000 58766.9344  0.33%     -    0s
     0     0 58767.0105    0   10 58961.0000 58767.0105  0.33%     -    0s
     0     0 58767.1175    0   15 58961.0000 58767.1175  0.33%     -    0s
     0     0 58767.1175    0   13 58961.0000 58767.1175  0.33%     -    0s
     0     2 58770.3184    0   13 58961.0000 58770.3184  0.32%     -    0s
*   11     3              10    58937.000000 58786.4437  0.26%   5.9    0s
*   18     4               9    58841.000000 58808.5697  0.06%   5.1    0s

Cutting planes:
  Gomory: 4
  Flow cover: 19

Explored 27 nodes (706 simplex iterations) in 0.31 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.884100000000e+04, best bound 5.884100000000e+04, gap 0.0%