Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:09:08 2013 Optimize a model with 76153 rows, 5929 columns and 231231 nonzeros Presolve removed 4449 rows and 2988 columns Presolve time: 0.57s Presolved: 71704 rows, 2941 columns, 217702 nonzeros Variable types: 35 continuous, 2906 integer (2906 binary) Found heuristic solution: objective 148580.00000 Root relaxation: objective 1.136040e+05, 32973 iterations, 3.81 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 113604.000 0 12 148580.000 113604.000 23.5% - 4s H 0 0 113619.00000 113604.000 0.01% - 4s H 0 0 113611.00000 113604.000 0.01% - 4s Explored 0 nodes (33091 simplex iterations) in 4.77 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.136110000000e+05, best bound 1.136040000000e+05, gap 0.0062%