Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:46:50 2012 Optimize a model with 13958 rows, 20022 columns and 61192 nonzeros Presolve removed 42 rows and 5642 columns Presolve time: 0.25s Presolved: 13916 rows, 14380 columns, 55354 nonzeros Variable types: 0 continuous, 14380 integer (14380 binary) Found heuristic solution: objective 141.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 218 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 182 3.00000 2.00000 33.3% - 0s 0 0 infeasible 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (400 simplex iterations) in 0.33 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%