Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:24:06 2013 Optimize a model with 71484 rows, 70644 columns and 282324 nonzeros Presolve removed 3380 rows and 0 columns Presolve time: 0.46s Presolved: 68104 rows, 70644 columns, 275564 nonzeros Variable types: 70560 continuous, 84 integer (84 binary) Root relaxation: objective 1.090755e+05, 18076 iterations, 4.30 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 109075.544 0 4 - 109075.544 - - 4s H 0 0 110884.00000 109075.544 1.63% - 5s 0 0 109078.656 0 5 110884.000 109078.656 1.63% - 5s 0 0 109079.359 0 6 110884.000 109079.359 1.63% - 6s H 0 0 110104.12698 109079.359 0.93% - 8s 0 2 109086.022 0 6 110104.127 109086.022 0.92% - 9s 2 4 109216.604 1 6 110104.127 109216.604 0.81% 316 10s H 3 3 109861.65728 109216.604 0.59% 211 10s H 4 4 109589.00000 109216.604 0.34% 208 10s H 6 6 109547.85714 109216.604 0.30% 166 10s H 7 7 109507.66076 109216.604 0.27% 163 10s H 8 7 109454.78740 109216.604 0.22% 153 10s * 12 8 11 109419.00000 109216.604 0.18% 118 10s * 18 8 6 109332.00000 109235.480 0.09% 100 11s Cutting planes: Gomory: 3 Flow cover: 5 Explored 28 nodes (20332 simplex iterations) in 11.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.093320000000e+05, best bound 1.093320000000e+05, gap 0.0%