Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:55:50 2012 Optimize a model with 7102 rows, 11342 columns and 32224 nonzeros Presolve removed 23 rows and 2438 columns Presolve time: 0.14s Presolved: 7079 rows, 8904 columns, 29786 nonzeros Variable types: 0 continuous, 8904 integer (8904 binary) Found heuristic solution: objective 32.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 5760 iterations, 0.11 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 (5760 simplex iterations) in 0.26 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%