Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:41:20 2012 Optimize a model with 4094 rows, 8010 columns and 19936 nonzeros Presolve removed 33 rows and 2937 columns Presolve time: 0.12s Presolved: 4061 rows, 5073 columns, 16999 nonzeros Variable types: 0 continuous, 5073 integer (5073 binary) Found heuristic solution: objective 22.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 3739 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 2.00000 1.00000 50.0% - 0s Explored 0 nodes (3739 simplex iterations) in 0.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%