Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:17:27 2013 Optimize a model with 3000 rows, 121100 columns and 402800 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.87s Presolved: 2900 rows, 121000 columns, 382700 nonzeros Variable types: 120200 continuous, 800 integer (800 binary) Root relaxation: objective 7.918217e+05, 6743 iterations, 1.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 791821.709 0 6 - 791821.709 - - 2s 0 0 791856.912 0 6 - 791856.912 - - 3s 0 0 791868.130 0 8 - 791868.130 - - 4s 0 0 791870.076 0 8 - 791870.076 - - 4s 0 0 791871.097 0 8 - 791871.097 - - 5s 0 0 791871.097 0 8 - 791871.097 - - 5s 0 0 791871.815 0 8 - 791871.815 - - 6s 0 0 791871.815 0 8 - 791871.815 - - 6s 0 0 791871.825 0 8 - 791871.825 - - 7s 0 0 791872.025 0 8 - 791872.025 - - 7s 0 0 791872.319 0 8 - 791872.319 - - 8s 0 0 791872.319 0 8 - 791872.319 - - 10s 0 2 791887.606 0 8 - 791887.606 - - 22s 7 9 792695.449 5 3 - 792231.177 - 120 25s 17 19 793157.490 15 3 - 792231.177 - 67.9 30s * 32 14 27 793357.35859 792231.177 0.14% 50.2 33s 51 15 792714.648 4 3 793357.359 792714.648 0.08% 41.0 35s * 77 11 9 793200.24980 792830.518 0.05% 40.1 37s 96 5 793118.165 10 3 793200.250 793118.165 0.01% 41.7 40s Cutting planes: Flow cover: 15 Explored 98 nodes (13048 simplex iterations) in 40.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.932002498024e+05, best bound 7.931381706022e+05, gap 0.0078%