Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:03:27 2012 Optimize a model with 20351 rows, 25440 columns and 85699 nonzeros Presolve removed 320 rows and 2 columns Presolve time: 0.42s Presolved: 20190 rows, 25438 columns, 109933 nonzeros Variable types: 0 continuous, 25438 integer (25438 binary) Found heuristic solution: objective 159.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 238 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 (238 simplex iterations) in 0.49 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%