Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:27:48 2013 Optimize a model with 3600 rows, 104300 columns and 214500 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.64s Presolved: 3500 rows, 104200 columns, 212400 nonzeros Variable types: 102200 continuous, 2000 integer (2000 binary) Root relaxation: objective 7.918217e+05, 6080 iterations, 0.68 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 791821.709 0 4 - 791821.709 - - 1s H 0 0 831984.36264 791821.709 4.83% - 2s 0 0 791889.215 0 4 831984.363 791889.215 4.82% - 3s 0 0 791939.646 0 4 831984.363 791939.646 4.81% - 3s 0 0 791942.919 0 4 831984.363 791942.919 4.81% - 4s 0 0 791952.360 0 4 831984.363 791952.360 4.81% - 4s 0 0 791957.346 0 4 831984.363 791957.346 4.81% - 5s 0 0 791957.995 0 4 831984.363 791957.995 4.81% - 5s 0 0 791960.983 0 4 831984.363 791960.983 4.81% - 6s 0 0 791963.391 0 4 831984.363 791963.391 4.81% - 6s 0 0 791963.402 0 4 831984.363 791963.402 4.81% - 6s 0 0 791964.159 0 4 831984.363 791964.159 4.81% - 7s 0 0 791964.357 0 4 831984.363 791964.357 4.81% - 7s 0 0 791964.357 0 4 831984.363 791964.357 4.81% - 8s 0 2 791964.357 0 4 831984.363 791964.357 4.81% - 9s 2 4 793333.664 1 4 831984.363 792500.568 4.75% 806 10s 12 14 792733.529 6 2 831984.363 792581.158 4.74% 436 15s H 27 11 793845.06548 792581.158 0.16% 329 19s * 30 7 16 793357.35859 792581.158 0.10% 302 19s 32 7 792674.250 3 2 793357.359 792581.158 0.10% 285 20s * 44 3 4 793200.24980 792822.399 0.05% 222 21s Cutting planes: Implied bound: 10 Flow cover: 19 Explored 54 nodes (18832 simplex iterations) in 21.73 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.932002498024e+05, best bound 7.932002498024e+05, gap 0.0000%