Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:14:16 2013 Optimize a model with 91963 rows, 6724 columns and 279046 nonzeros Presolve removed 8044 rows and 3432 columns Presolve time: 0.85s Presolved: 83919 rows, 3292 columns, 254203 nonzeros Variable types: 31 continuous, 3261 integer (3261 binary) Found heuristic solution: objective 137087.00000 Root relaxation: objective 1.044780e+05, 20001 iterations, 2.53 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 104478.045 0 7 137087.000 104478.045 23.8% - 3s H 0 0 104483.00000 104478.045 0.00% - 3s Explored 0 nodes (20034 simplex iterations) in 3.72 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.044830000000e+05, best bound 1.044790000000e+05, gap 0.0038%