Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:14:07 2013 Optimize a model with 91963 rows, 6724 columns and 279046 nonzeros Presolve removed 19600 rows and 3610 columns Presolve time: 0.88s Presolved: 72363 rows, 3114 columns, 218901 nonzeros Variable types: 23 continuous, 3091 integer (3091 binary) Found heuristic solution: objective 152925.00000 Root relaxation: objective 1.320638e+05, 10975 iterations, 1.25 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 132063.816 0 10 152925.000 132063.816 13.6% - 2s H 0 0 132068.00000 132063.816 0.00% - 2s Explored 0 nodes (11002 simplex iterations) in 2.42 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.320680000000e+05, best bound 1.320640000000e+05, gap 0.0030%