Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:46:34 2012 Optimize a model with 30081 rows, 31862 columns and 121216 nonzeros Presolve removed 382 rows and 4274 columns Presolve time: 0.71s Presolved: 29699 rows, 27588 columns, 115720 nonzeros Variable types: 0 continuous, 27588 integer (27588 binary) Found heuristic solution: objective 178.0000000 Root relaxation: objective 3.000000e+00, 20167 iterations, 3.45 seconds Total elapsed time = 11.68s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 13s Explored 0 nodes (63195 simplex iterations) in 13.64 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%