Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:56:11 2013 Optimize a model with 2700 rows, 27100 columns and 58050 nonzeros Presolve removed 150 rows and 100 columns Presolve time: 0.21s Presolved: 2550 rows, 27000 columns, 55900 nonzeros Variable types: 26050 continuous, 950 integer (950 binary) Root relaxation: objective 1.959342e+05, 3945 iterations, 0.15 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 195934.242 0 3 - 195934.242 - - 0s 0 0 196095.479 0 3 - 196095.479 - - 0s 0 0 196121.672 0 3 - 196121.672 - - 0s 0 0 196123.013 0 3 - 196123.013 - - 0s 0 0 196123.925 0 3 - 196123.925 - - 0s 0 0 196128.505 0 3 - 196128.505 - - 0s 0 0 196130.839 0 3 - 196130.839 - - 0s 0 0 196133.655 0 3 - 196133.655 - - 0s 0 0 196135.925 0 3 - 196135.925 - - 0s 0 0 196138.723 0 3 - 196138.723 - - 0s 0 0 196140.963 0 3 - 196140.963 - - 1s 0 0 196141.194 0 3 - 196141.194 - - 1s 0 0 196141.445 0 3 - 196141.445 - - 1s H 0 0 201111.11831 196141.445 2.47% - 1s 0 2 196142.043 0 3 201111.118 196142.043 2.47% - 1s H 19 7 196566.68925 196310.434 0.13% 25.7 2s H 25 4 196565.79498 196310.434 0.13% 23.0 2s H 27 4 196564.71930 196310.434 0.13% 21.6 2s Cutting planes: Flow cover: 32 Explored 54 nodes (5631 simplex iterations) in 2.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.965647192958e+05, best bound 1.965476819957e+05, gap 0.0087%