Gurobi 5.0.1 (linux64) logging started Wed Apr 24 06:33:53 2013 Optimize a model with 85652 rows, 84732 columns and 338652 nonzeros Presolve removed 3871 rows and 0 columns Presolve time: 0.60s Presolved: 81781 rows, 84732 columns, 330910 nonzeros Variable types: 84640 continuous, 92 integer (92 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 20749 1.2156442e+05 1.163093e+03 0.000000e+00 5s 21432 1.2165016e+05 0.000000e+00 0.000000e+00 5s Root relaxation: objective 1.216502e+05, 21432 iterations, 5.42 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 121650.165 0 3 - 121650.165 - - 6s H 0 0 126702.00000 121650.165 3.99% - 6s H 0 0 121947.00000 121650.165 0.24% - 7s 0 0 121655.136 0 4 121947.000 121655.136 0.24% - 7s 0 0 121655.136 0 3 121947.000 121655.136 0.24% - 11s 0 0 121655.259 0 4 121947.000 121655.259 0.24% - 11s 0 0 121655.279 0 4 121947.000 121655.279 0.24% - 11s 0 2 121672.525 0 4 121947.000 121672.525 0.23% - 13s * 9 4 8 121933.00000 121829.792 0.08% 68.0 14s Cutting planes: Gomory: 2 Flow cover: 2 Explored 31 nodes (30232 simplex iterations) in 14.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.219330000000e+05, best bound 1.219234606742e+05, gap 0.0078%