Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:56:03 2012 Optimize a model with 38415 rows, 38612 columns and 152878 nonzeros Presolve removed 427 rows and 6470 columns Presolve time: 0.93s Presolved: 37988 rows, 32142 columns, 145042 nonzeros Variable types: 0 continuous, 32142 integer (32142 binary) Found heuristic solution: objective 196.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 304 iterations, 0.02 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 (304 simplex iterations) in 1.05 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%