Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:35:47 2013 Optimize a model with 147536 rows, 9216 columns and 446976 nonzeros Presolve removed 11800 rows and 4698 columns Presolve time: 1.79s Presolved: 135736 rows, 4518 columns, 410645 nonzeros Variable types: 37 continuous, 4481 integer (4481 binary) Found heuristic solution: objective 192877.00000 Root relaxation: objective 1.451627e+05, 28824 iterations, 4.81 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 145162.732 0 12 192877.000 145162.732 24.7% - 7s H 0 0 145189.00000 145162.732 0.02% - 7s H 0 0 145172.00000 145162.732 0.01% - 7s Explored 0 nodes (29131 simplex iterations) in 7.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.451720000000e+05, best bound 1.451630000000e+05, gap 0.0062%