Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:54:20 2013 Optimize a model with 2800 rows, 111000 columns and 292500 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.34s Presolved: 2700 rows, 110900 columns, 282400 nonzeros Variable types: 110200 continuous, 700 integer (700 binary) Root relaxation: objective 7.918217e+05, 6124 iterations, 0.52 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 - - 1s 0 0 791880.534 0 6 - 791880.534 - - 1s 0 0 791889.266 0 6 - 791889.266 - - 1s 0 0 791889.266 0 6 - 791889.266 - - 2s 0 0 791894.800 0 8 - 791894.800 - - 2s 0 0 791895.704 0 8 - 791895.704 - - 2s 0 0 791901.662 0 8 - 791901.662 - - 3s 0 0 791901.874 0 8 - 791901.874 - - 3s 0 0 791904.439 0 6 - 791904.439 - - 3s 0 0 791904.459 0 6 - 791904.459 - - 3s 0 0 791904.504 0 6 - 791904.504 - - 4s 0 0 791904.504 0 6 - 791904.504 - - 4s 0 0 791904.520 0 6 - 791904.520 - - 4s 0 0 791904.520 0 6 - 791904.520 - - 5s H 0 0 805505.35161 791904.520 1.69% - 6s 0 2 791904.520 0 6 805505.352 791904.520 1.69% - 7s 12 14 793022.211 11 3 805505.352 792666.717 1.59% 83.8 10s 25 25 793732.187 24 6 805505.352 792666.717 1.59% 77.6 15s 49 41 794850.805 46 3 805505.352 792666.717 1.59% 61.2 20s H 54 37 801765.27344 792666.717 1.13% 56.1 20s H 81 29 795377.53804 792666.717 0.34% 40.0 23s 129 43 795211.449 126 1 795377.538 792666.717 0.34% 26.0 25s 214 70 793346.904 16 3 795377.538 792771.699 0.33% 19.6 30s * 215 9 17 793357.35859 792771.699 0.07% 19.9 30s * 225 5 8 793200.24980 793004.501 0.02% 25.6 31s Cutting planes: Flow cover: 18 Explored 244 nodes (15059 simplex iterations) in 32.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.932002498024e+05, best bound 7.931209962086e+05, gap 0.0100%