Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:25:30 2013 Optimize a model with 121575 rows, 8100 columns and 368550 nonzeros Presolve removed 10992 rows and 4149 columns Presolve time: 1.31s Presolved: 110583 rows, 3951 columns, 334270 nonzeros Variable types: 29 continuous, 3922 integer (3922 binary) Found heuristic solution: objective 182433.00000 Root relaxation: objective 1.458524e+05, 17583 iterations, 2.39 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 145852.429 0 11 182433.000 145852.429 20.1% - 4s H 0 0 145863.00000 145852.429 0.01% - 4s Explored 0 nodes (17677 simplex iterations) in 4.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.458630000000e+05, best bound 1.458530000000e+05, gap 0.0069%