Gurobi 5.0.1 (linux64) logging started Sat Nov 17 07:11:34 2012 Optimize a model with 68795 rows, 54990 columns and 260206 nonzeros Presolve removed 2357 rows and 3978 columns (presolve time = 5s) ... Presolve removed 2359 rows and 3980 columns Presolve time: 5.66s Presolved: 66436 rows, 51010 columns, 249810 nonzeros Variable types: 0 continuous, 51010 integer (51010 binary) Found heuristic solution: objective 234.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 369 iterations, 0.04 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% - 5s Explored 0 nodes (369 simplex iterations) in 5.87 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%