Gurobi 5.0.1 (linux64) logging started Sat Nov 17 04:30:14 2012 Optimize a model with 57855 rows, 51302 columns and 223738 nonzeros Presolve removed 469 rows and 3392 columns Presolve time: 1.39s Presolved: 57386 rows, 47910 columns, 218710 nonzeros Variable types: 0 continuous, 47910 integer (47910 binary) Found heuristic solution: objective 226.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 367 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% - 1s Explored 0 nodes (367 simplex iterations) in 1.57 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%