Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:19:10 2013 Optimize a model with 106081 rows, 7396 columns and 321726 nonzeros Presolve removed 8135 rows and 3767 columns Presolve time: 1.03s Presolved: 97946 rows, 3629 columns, 296162 nonzeros Variable types: 28 continuous, 3601 integer (3601 binary) Found heuristic solution: objective 174669.00000 Root relaxation: objective 1.403964e+05, 17271 iterations, 2.19 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 140396.400 0 13 174669.000 140396.400 19.6% - 3s H 0 0 140407.00000 140396.400 0.01% - 3s Explored 0 nodes (17425 simplex iterations) in 3.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.404070000000e+05, best bound 1.403970000000e+05, gap 0.0071%