Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:13:15 2013 Optimize a model with 170 rows, 5315 columns and 60670 nonzeros Presolve removed 5 rows and 5 columns Presolve time: 0.11s Presolved: 165 rows, 5310 columns, 55665 nonzeros Variable types: 5260 continuous, 50 integer (50 binary) Root relaxation: objective 1.174557e+04, 47 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 11745.5748 0 3 - 11745.5748 - - 0s 0 0 11745.6067 0 3 - 11745.6067 - - 0s 0 0 11771.4376 0 6 - 11771.4376 - - 0s 0 0 11777.8310 0 3 - 11777.8310 - - 0s 0 0 11779.1574 0 3 - 11779.1574 - - 0s 0 0 11779.1574 0 3 - 11779.1574 - - 0s 0 0 11779.1574 0 3 - 11779.1574 - - 0s 0 0 11779.1594 0 3 - 11779.1594 - - 0s 0 0 11779.1638 0 6 - 11779.1638 - - 0s 0 0 11779.1645 0 6 - 11779.1645 - - 0s 0 0 11779.1648 0 6 - 11779.1648 - - 0s 0 0 11779.1648 0 6 - 11779.1648 - - 0s H 0 0 11779.404669 11779.1648 0.00% - 1s Cutting planes: Flow cover: 5 Explored 0 nodes (350 simplex iterations) in 1.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.177940466895e+04, best bound 1.177916479078e+04, gap 0.0020%