Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:59:51 2013 Optimize a model with 1800 rows, 27150 columns and 57250 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.19s Presolved: 1750 rows, 27100 columns, 56200 nonzeros Variable types: 26100 continuous, 1000 integer (1000 binary) Root relaxation: objective 1.959342e+05, 2579 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 195934.242 0 6 - 195934.242 - - 0s H 0 0 200829.57262 195934.242 2.44% - 0s 0 0 196056.654 0 4 200829.573 196056.654 2.38% - 0s 0 0 196058.049 0 4 200829.573 196058.049 2.38% - 0s 0 0 196060.210 0 6 200829.573 196060.210 2.37% - 0s 0 0 196061.385 0 6 200829.573 196061.385 2.37% - 0s 0 0 196062.611 0 6 200829.573 196062.611 2.37% - 0s 0 0 196062.611 0 6 200829.573 196062.611 2.37% - 0s 0 0 196062.611 0 6 200829.573 196062.611 2.37% - 1s 0 0 196062.611 0 6 200829.573 196062.611 2.37% - 1s 0 0 196062.611 0 6 200829.573 196062.611 2.37% - 1s 0 0 196062.611 0 6 200829.573 196062.611 2.37% - 1s H 0 0 198512.56627 196062.611 1.23% - 1s 0 2 196062.611 0 6 198512.566 196062.611 1.23% - 1s * 21 5 12 196570.65000 196375.390 0.10% 85.4 2s H 54 1 196565.79498 196375.390 0.10% 38.4 2s * 57 2 27 196564.71930 196375.390 0.10% 36.7 2s Cutting planes: Implied bound: 20 Flow cover: 9 Explored 60 nodes (5963 simplex iterations) in 2.77 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.965647192958e+05, best bound 1.965647192958e+05, gap 0.0%