Gurobi 5.0.1 (linux64) logging started Sat Nov 17 07:46:17 2012 Optimize a model with 66596 rows, 56406 columns and 255010 nonzeros Presolve removed 1446 rows and 5216 columns Presolve time: 1.92s Presolved: 65150 rows, 51190 columns, 245691 nonzeros Variable types: 0 continuous, 51190 integer (51190 binary) Found heuristic solution: objective 237.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 371 iterations, 0.03 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% - 2s Explored 0 nodes (371 simplex iterations) in 2.12 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%