Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:47:14 2013 Optimize a model with 3000 rows, 152200 columns and 641700 nonzeros Presolve removed 100 rows and 11300 columns Presolve time: 0.81s Presolved: 2900 rows, 140900 columns, 601700 nonzeros Variable types: 140100 continuous, 800 integer (800 binary) Root relaxation: objective 7.918217e+05, 7677 iterations, 0.92 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 791821.709 0 10 - 791821.709 - - 2s 0 0 791855.658 0 10 - 791855.658 - - 2s 0 0 791860.669 0 10 - 791860.669 - - 3s 0 0 791863.917 0 10 - 791863.917 - - 4s 0 0 791865.591 0 9 - 791865.591 - - 4s 0 0 791869.771 0 10 - 791869.771 - - 5s 0 0 791869.771 0 10 - 791869.771 - - 6s 0 0 791869.771 0 10 - 791869.771 - - 6s 0 0 791869.941 0 10 - 791869.941 - - 7s 0 0 791870.014 0 10 - 791870.014 - - 8s 0 0 791870.014 0 10 - 791870.014 - - 10s 0 2 791894.803 0 10 - 791894.803 - - 19s 5 7 792537.210 5 10 - 792458.578 - 198 20s 56 58 793576.871 51 5 - 792458.578 - 33.2 25s * 100 53 93 793620.33576 792458.578 0.15% 19.6 27s * 120 14 17 793357.35859 792473.568 0.11% 25.1 29s 135 16 793213.598 16 5 793357.359 792480.568 0.11% 26.6 30s 173 21 cutoff 9 793357.359 792822.399 0.07% 30.8 35s * 186 14 10 793200.24980 792830.518 0.05% 32.1 35s Cutting planes: Flow cover: 16 Explored 224 nodes (18575 simplex iterations) in 38.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.932002498024e+05, best bound 7.931216652785e+05, gap 0.0099%