Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:15:54 2013 Optimize a model with 3400 rows, 106200 columns and 216100 nonzeros Presolve removed 200 rows and 300 columns Presolve time: 0.46s Presolved: 3200 rows, 105900 columns, 211800 nonzeros Variable types: 104000 continuous, 1900 integer (1900 binary) Root relaxation: objective 7.918217e+05, 8066 iterations, 0.77 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 - - 1s 0 0 791886.315 0 2 - 791886.315 - - 1s 0 0 791954.523 0 2 - 791954.523 - - 2s 0 0 791955.480 0 2 - 791955.480 - - 2s 0 0 791955.902 0 2 - 791955.902 - - 2s 0 0 791955.902 0 2 - 791955.902 - - 2s 0 0 791956.810 0 2 - 791956.810 - - 3s 0 0 791961.990 0 2 - 791961.990 - - 3s 0 0 791961.990 0 2 - 791961.990 - - 3s 0 0 791961.990 0 2 - 791961.990 - - 4s 0 0 791961.990 0 2 - 791961.990 - - 4s 0 0 791962.300 0 2 - 791962.300 - - 5s 0 0 791962.300 0 2 - 791962.300 - - 5s H 0 0 802039.54298 791962.300 1.26% - 6s 0 2 792016.340 0 2 802039.543 792016.340 1.25% - 8s 18 20 792855.012 17 2 802039.543 792666.717 1.17% 49.9 10s H 27 22 794338.23754 792666.717 0.21% 44.2 11s * 59 21 58 793505.77764 792666.717 0.11% 49.3 14s 62 23 792701.879 5 1 793505.778 792688.786 0.10% 49.2 15s 185 54 793388.455 37 1 793505.778 792720.241 0.10% 28.8 20s * 240 23 7 793200.24980 792847.452 0.04% 34.6 22s 286 8 793159.147 22 1 793200.250 793104.875 0.01% 34.1 25s Cutting planes: Flow cover: 22 Explored 291 nodes (19151 simplex iterations) in 25.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.932002498024e+05, best bound 7.931656067851e+05, gap 0.0044%