Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:34:31 2013 Optimize a model with 1500 rows, 35550 columns and 151400 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.20s Presolved: 1450 rows, 35500 columns, 141350 nonzeros Variable types: 35100 continuous, 400 integer (400 binary) Root relaxation: objective 1.715514e+05, 2645 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 171551.420 0 6 - 171551.420 - - 0s 0 0 171552.325 0 6 - 171552.325 - - 0s 0 0 171552.325 0 6 - 171552.325 - - 0s H 0 0 171610.01199 171552.325 0.03% - 0s 0 1 171569.326 0 3 171610.012 171569.326 0.02% - 1s * 6 0 6 171584.76124 171584.761 0.0% 40.3 1s Cutting planes: Flow cover: 2 Explored 7 nodes (3296 simplex iterations) in 1.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.715847612416e+05, best bound 1.715847612416e+05, gap 0.0%