Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:42:35 2013 Optimize a model with 5700 rows, 30100 columns and 70050 nonzeros Presolve removed 150 rows and 100 columns Presolve time: 0.38s Presolved: 5550 rows, 30000 columns, 64900 nonzeros Variable types: 27550 continuous, 2450 integer (2450 binary) Root relaxation: objective 1.959342e+05, 6259 iterations, 0.38 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 195934.242 0 3 - 195934.242 - - 0s 0 0 196095.435 0 3 - 196095.435 - - 1s 0 0 196125.589 0 3 - 196125.589 - - 1s 0 0 196126.306 0 3 - 196126.306 - - 1s 0 0 196126.825 0 3 - 196126.825 - - 1s 0 0 196139.443 0 3 - 196139.443 - - 1s 0 0 196139.748 0 3 - 196139.748 - - 1s 0 0 196143.325 0 3 - 196143.325 - - 1s 0 0 196143.529 0 3 - 196143.529 - - 1s 0 0 196145.095 0 3 - 196145.095 - - 2s 0 0 196145.165 0 3 - 196145.165 - - 2s 0 0 196146.432 0 3 - 196146.432 - - 2s 0 0 196146.432 0 3 - 196146.432 - - 2s 0 0 196146.443 0 3 - 196146.443 - - 2s 0 0 196146.646 0 4 - 196146.646 - - 2s H 0 0 209254.88839 196146.646 6.26% - 3s 0 2 196146.995 0 4 209254.888 196146.995 6.26% - 3s 21 23 196401.643 21 3 209254.888 196311.034 6.19% 30.8 5s H 42 9 196567.00579 196311.034 0.13% 21.2 6s H 48 10 196566.21127 196311.034 0.13% 22.4 6s H 54 10 196565.55616 196311.034 0.13% 20.5 6s Cutting planes: Flow cover: 30 Explored 150 nodes (9326 simplex iterations) in 7.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.965655561565e+05, best bound 1.965480889920e+05, gap 0.0089%