Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:05:40 2013 Optimize a model with 5400 rows, 104200 columns and 216100 nonzeros Presolve removed 300 rows and 200 columns Presolve time: 0.61s Presolved: 5100 rows, 104000 columns, 211800 nonzeros Variable types: 102100 continuous, 1900 integer (1900 binary) Root relaxation: objective 7.918217e+05, 11243 iterations, 1.24 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 791821.709 0 2 - 791821.709 - - 2s 0 0 791888.424 0 2 - 791888.424 - - 2s 0 0 791948.951 0 2 - 791948.951 - - 2s 0 0 791949.989 0 2 - 791949.989 - - 3s 0 0 791949.989 0 2 - 791949.989 - - 3s 0 0 791959.406 0 2 - 791959.406 - - 3s 0 0 791959.406 0 2 - 791959.406 - - 4s 0 0 791960.084 0 2 - 791960.084 - - 4s 0 0 791963.958 0 2 - 791963.958 - - 4s 0 0 791964.969 0 2 - 791964.969 - - 4s 0 0 791966.250 0 2 - 791966.250 - - 5s 0 0 791966.309 0 2 - 791966.309 - - 5s 0 0 791966.843 0 2 - 791966.843 - - 5s 0 0 791966.971 0 2 - 791966.971 - - 6s 0 0 791967.113 0 2 - 791967.113 - - 6s H 0 0 802039.54298 791967.113 1.26% - 8s 0 2 791991.931 0 2 802039.543 791991.931 1.25% - 9s 5 7 792652.141 4 1 802039.543 792652.141 1.17% 91.4 10s H 27 21 794338.23754 792666.717 0.21% 52.6 14s 31 25 793144.381 30 1 794338.238 792666.717 0.21% 52.9 15s H 36 19 793505.77764 792666.717 0.11% 49.4 15s 113 56 793357.897 20 1 793505.778 792822.399 0.09% 40.2 20s * 124 19 5 793200.24980 792903.032 0.04% 39.1 20s Cutting planes: Flow cover: 32 Explored 163 nodes (17600 simplex iterations) in 21.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.932002498024e+05, best bound 7.931424207630e+05, gap 0.0073%