Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:56:06 2013 Optimize a model with 2700 rows, 27100 columns and 58050 nonzeros Presolve removed 150 rows and 100 columns Presolve time: 0.27s Presolved: 2550 rows, 27000 columns, 55900 nonzeros Variable types: 26050 continuous, 950 integer (950 binary) Root relaxation: objective 1.626233e+05, 3471 iterations, 0.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 162623.326 0 5 - 162623.326 - - 0s 0 0 162694.019 0 5 - 162694.019 - - 0s 0 0 162716.642 0 5 - 162716.642 - - 0s 0 0 162725.702 0 4 - 162725.702 - - 0s 0 0 162726.191 0 4 - 162726.191 - - 0s 0 0 162728.353 0 4 - 162728.353 - - 0s 0 0 162728.684 0 4 - 162728.684 - - 0s 0 0 162728.693 0 4 - 162728.693 - - 0s 0 0 162728.814 0 4 - 162728.814 - - 0s 0 0 162732.453 0 4 - 162732.453 - - 1s 0 0 162733.777 0 4 - 162733.777 - - 1s 0 0 162733.777 0 4 - 162733.777 - - 1s 0 0 162734.031 0 4 - 162734.031 - - 1s 0 0 162734.031 0 4 - 162734.031 - - 1s H 0 0 163803.75589 162734.031 0.65% - 1s 0 2 162735.191 0 4 163803.756 162735.191 0.65% - 1s H 27 18 163201.71383 162823.338 0.23% 9.9 2s H 39 21 162947.39424 162823.338 0.08% 7.3 2s H 43 23 162943.98093 162823.338 0.07% 7.0 2s H 44 23 162943.58607 162823.338 0.07% 7.0 2s * 46 24 42 162939.08390 162823.338 0.07% 7.1 2s * 78 23 19 162917.68851 162868.881 0.03% 7.4 2s Cutting planes: Flow cover: 24 Explored 142 nodes (4777 simplex iterations) in 3.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.629176885125e+05, best bound 1.629014117177e+05, gap 0.0100%