Gurobi 5.0.1 (linux64) logging started Wed Apr 24 05:57:45 2013

Optimize a model with 81990 rows, 81090 columns and 324090 nonzeros
Presolve removed 4114 rows and 0 columns
Presolve time: 0.56s
Presolved: 77876 rows, 81090 columns, 315862 nonzeros
Variable types: 81000 continuous, 90 integer (90 binary)

Root relaxation: objective 9.844907e+04, 15403 iterations, 3.97 seconds

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

     0     0 98449.0747    0    4          - 98449.0747     -      -    4s
H    0     0                    102204.00000 98449.0747  3.67%     -    5s
     0     0 98456.1735    0    6 102204.000 98456.1735  3.67%     -    5s
     0     0 98456.1735    0    6 102204.000 98456.1735  3.67%     -    6s
H    0     0                    98709.032258 98456.1735  0.26%     -    8s
H    0     0                    98590.000000 98456.1735  0.14%     -    8s
     0     0 98462.7059    0    2 98590.0000 98462.7059  0.13%     -   10s
     0     0 98467.7158    0    4 98590.0000 98467.7158  0.12%     -   11s
     0     0 98468.4350    0    3 98590.0000 98468.4350  0.12%     -   11s
     0     0 98513.3665    0    2 98590.0000 98513.3665  0.08%     -   11s
     0     0 98521.5831    0    2 98590.0000 98521.5831  0.07%     -   12s
     0     0 98522.4194    0    1 98590.0000 98522.4194  0.07%     -   12s
     0     2 98533.0986    0    1 98590.0000 98533.0986  0.06%     -   12s

Cutting planes:
  Flow cover: 1

Explored 3 nodes (19433 simplex iterations) in 12.76 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.859000000000e+04, best bound 9.859000000000e+04, gap 0.0%