Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:19:48 2013 Optimize a model with 106081 rows, 7396 columns and 321726 nonzeros Presolve removed 9577 rows and 3780 columns Presolve time: 1.06s Presolved: 96504 rows, 3616 columns, 292330 nonzeros Variable types: 34 continuous, 3582 integer (3582 binary) Found heuristic solution: objective 171478.00000 Root relaxation: objective 1.346992e+05, 19158 iterations, 2.45 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 134699.229 0 14 171478.000 134699.229 21.4% - 3s H 0 0 134720.00000 134699.229 0.02% - 3s H 0 0 134714.00000 134699.229 0.01% - 3s H 0 0 134705.00000 134699.229 0.00% - 4s Explored 0 nodes (19226 simplex iterations) in 4.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.347050000000e+05, best bound 1.347000000000e+05, gap 0.0037%