Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:52:58 2013 Optimize a model with 74906 rows, 74046 columns and 295926 nonzeros Presolve removed 3254 rows and 0 columns Presolve time: 0.49s Presolved: 71652 rows, 74046 columns, 289418 nonzeros Variable types: 73960 continuous, 86 integer (86 binary) Root relaxation: objective 1.104756e+05, 17127 iterations, 4.38 seconds Total elapsed time = 5.06s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 110475.639 0 3 - 110475.639 - - 5s H 0 0 110628.00000 110475.639 0.14% - 5s 0 0 110476.399 0 4 110628.000 110476.399 0.14% - 6s 0 0 110476.399 0 3 110628.000 110476.399 0.14% - 8s 0 0 110476.493 0 5 110628.000 110476.493 0.14% - 9s 0 0 110476.948 0 5 110628.000 110476.948 0.14% - 9s 0 0 110511.885 0 2 110628.000 110511.885 0.10% - 9s 0 0 110512.750 0 1 110628.000 110512.750 0.10% - 9s 0 2 110513.048 0 1 110628.000 110513.048 0.10% - 10s Cutting planes: Flow cover: 1 Explored 11 nodes (24972 simplex iterations) in 11.24 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.106280000000e+05, best bound 1.106280000000e+05, gap 0.0%