Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:28:18 2012 Optimize a model with 35719 rows, 36290 columns and 142498 nonzeros Presolve removed 408 rows and 4942 columns Presolve time: 0.86s Presolved: 35311 rows, 31348 columns, 136236 nonzeros Variable types: 0 continuous, 31348 integer (31348 binary) Found heuristic solution: objective 190.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 277 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 infeasible 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (277 simplex iterations) in 0.96 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%