Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:33:25 2013 Optimize a model with 142975 rows, 9025 columns and 433200 nonzeros Presolve removed 18473 rows and 4695 columns Presolve time: 1.71s Presolved: 124502 rows, 4330 columns, 375803 nonzeros Variable types: 25 continuous, 4305 integer (4305 binary) Found heuristic solution: objective 211577.00000 Root relaxation: objective 1.752749e+05, 17071 iterations, 2.27 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 175274.860 0 9 211577.000 175274.860 17.2% - 4s H 0 0 175286.00000 175274.860 0.01% - 4s Explored 0 nodes (17086 simplex iterations) in 4.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.752860000000e+05, best bound 1.752750000000e+05, gap 0.0063%