Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:17:45 2013 Optimize a model with 102425 rows, 7225 columns and 310675 nonzeros Presolve removed 22531 rows and 3884 columns Presolve time: 1.04s Presolved: 79894 rows, 3341 columns, 241484 nonzeros Variable types: 22 continuous, 3319 integer (3319 binary) Found heuristic solution: objective 170685.00000 Root relaxation: objective 1.458649e+05, 10807 iterations, 1.20 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 145864.908 0 6 170685.000 145864.908 14.5% - 2s H 0 0 145873.00000 145864.908 0.01% - 2s Explored 0 nodes (10832 simplex iterations) in 2.54 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.458730000000e+05, best bound 1.458650000000e+05, gap 0.0055%