Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:12:48 2013 Optimize a model with 5800 rows, 35150 columns and 85250 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.23s Presolved: 5750 rows, 35100 columns, 80200 nonzeros Variable types: 30100 continuous, 5000 integer (5000 binary) Root relaxation: objective 1.824192e+05, 4334 iterations, 0.16 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 182419.206 0 2 - 182419.206 - - 0s 0 0 182456.784 0 6 - 182456.784 - - 0s 0 0 182467.356 0 10 - 182467.356 - - 0s 0 0 182471.777 0 6 - 182471.777 - - 0s 0 0 182472.841 0 6 - 182472.841 - - 1s 0 0 182475.838 0 6 - 182475.838 - - 1s 0 0 182475.893 0 6 - 182475.893 - - 1s 0 0 182475.951 0 6 - 182475.951 - - 1s 0 0 182475.969 0 6 - 182475.969 - - 1s 0 0 182476.040 0 6 - 182476.040 - - 1s 0 0 182476.040 0 6 - 182476.040 - - 1s 0 2 182476.040 0 6 - 182476.040 - - 2s * 19 11 10 183727.12103 182701.496 0.56% 91.2 3s H 28 0 182975.48108 182701.496 0.15% 71.7 3s H 55 0 182932.88976 182869.886 0.03% 39.6 4s 69 1 182874.940 42 4 182932.890 182874.940 0.03% 32.9 5s * 80 4 51 182879.22514 182878.567 0.00% 29.5 5s Cutting planes: Gomory: 1 Implied bound: 47 Flow cover: 1 Explored 81 nodes (7913 simplex iterations) in 5.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.828792251419e+05, best bound 1.828785670376e+05, gap 0.0004%