Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:12:14 2013 Optimize a model with 170 rows, 10550 columns and 130605 nonzeros Presolve removed 5 rows and 245 columns Presolve time: 0.67s Presolved: 165 rows, 10305 columns, 120605 nonzeros Variable types: 10255 continuous, 50 integer (50 binary) Root relaxation: objective 1.174557e+04, 72 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 11745.5748 0 8 - 11745.5748 - - 0s 0 0 11745.6067 0 8 - 11745.6067 - - 0s 0 0 11773.8242 0 13 - 11773.8242 - - 1s 0 0 11779.1574 0 5 - 11779.1574 - - 1s 0 0 11779.1574 0 5 - 11779.1574 - - 1s 0 0 11779.1574 0 5 - 11779.1574 - - 2s 0 0 11779.1594 0 5 - 11779.1594 - - 2s 0 0 11779.1602 0 4 - 11779.1602 - - 3s 0 0 11779.1612 0 5 - 11779.1612 - - 3s 0 0 11779.1613 0 5 - 11779.1613 - - 3s 0 0 11779.1614 0 5 - 11779.1614 - - 3s 0 0 11779.1614 0 5 - 11779.1614 - - 3s H 0 0 11798.346424 11779.1614 0.16% - 3s H 0 0 11796.941759 11779.1614 0.15% - 4s 0 2 11779.2306 0 5 11796.9418 11779.2306 0.15% - 4s * 8 4 7 11779.404669 11779.3851 0.00% 8.5 4s Cutting planes: Flow cover: 5 Explored 9 nodes (733 simplex iterations) in 4.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.177940466895e+04, best bound 1.177938513977e+04, gap 0.0002%