Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:21:01 2013 Optimize a model with 109823 rows, 7569 columns and 333036 nonzeros Presolve removed 8457 rows and 3848 columns Presolve time: 1.15s Presolved: 101366 rows, 3721 columns, 307118 nonzeros Variable types: 36 continuous, 3685 integer (3685 binary) Found heuristic solution: objective 158982.00000 Root relaxation: objective 1.223061e+05, 18818 iterations, 2.80 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 122306.125 0 11 158982.000 122306.125 23.1% - 4s H 0 0 122327.00000 122306.125 0.02% - 4s H 0 0 122318.00000 122306.125 0.01% - 4s Explored 0 nodes (18878 simplex iterations) in 4.51 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.223180000000e+05, best bound 1.223070000000e+05, gap 0.0090%