Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:59:15 2013 Optimize a model with 1200 rows, 28550 columns and 66550 nonzeros Presolve removed 50 rows and 1250 columns Presolve time: 0.14s Presolved: 1150 rows, 27300 columns, 64550 nonzeros Variable types: 27050 continuous, 250 integer (250 binary) Root relaxation: objective 1.824192e+05, 2415 iterations, 0.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 182419.206 0 3 - 182419.206 - - 0s H 0 0 199449.94651 182419.206 8.54% - 0s 0 0 182445.503 0 6 199449.947 182445.503 8.53% - 0s 0 0 182456.510 0 6 199449.947 182456.510 8.52% - 0s 0 0 182462.514 0 6 199449.947 182462.514 8.52% - 0s 0 0 182463.187 0 6 199449.947 182463.187 8.52% - 0s 0 0 182464.717 0 6 199449.947 182464.717 8.52% - 0s 0 0 182465.684 0 6 199449.947 182465.684 8.52% - 0s 0 0 182466.799 0 6 199449.947 182466.799 8.51% - 0s 0 0 182467.375 0 6 199449.947 182467.375 8.51% - 0s 0 0 182467.724 0 6 199449.947 182467.724 8.51% - 0s 0 0 182468.048 0 6 199449.947 182468.048 8.51% - 1s 0 0 182468.245 0 6 199449.947 182468.245 8.51% - 1s 0 0 182468.393 0 6 199449.947 182468.393 8.51% - 1s 0 0 182468.393 0 6 199449.947 182468.393 8.51% - 1s 0 2 182469.742 0 6 199449.947 182469.742 8.51% - 1s H 27 17 183432.05005 182633.587 0.44% 28.5 2s * 59 30 56 183293.44134 182633.587 0.36% 15.0 2s * 71 2 14 182879.22514 182701.496 0.10% 15.6 2s Cutting planes: Flow cover: 8 Explored 77 nodes (4357 simplex iterations) in 3.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.828792251419e+05, best bound 1.828671311109e+05, gap 0.0066%