Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:14:01 2013 Optimize a model with 91963 rows, 6724 columns and 279046 nonzeros Presolve removed 7384 rows and 3423 columns Presolve time: 0.89s Presolved: 84579 rows, 3301 columns, 256181 nonzeros Variable types: 31 continuous, 3270 integer (3270 binary) Found heuristic solution: objective 145028.00000 Root relaxation: objective 1.088295e+05, 23973 iterations, 2.92 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 108829.467 0 13 145028.000 108829.467 25.0% - 4s H 0 0 108844.00000 108829.467 0.01% - 4s H 0 0 108840.00000 108829.467 0.01% - 4s Explored 0 nodes (24074 simplex iterations) in 4.31 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.088400000000e+05, best bound 1.088300000000e+05, gap 0.0092%