Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:10:30 2012 Optimize a model with 1253 rows, 1122 columns and 4717 nonzeros Presolve removed 106 rows and 167 columns Presolve time: 0.06s Presolved: 1147 rows, 955 columns, 4251 nonzeros Variable types: 0 continuous, 955 integer (955 binary) Found heuristic solution: objective 33.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 49 iterations, 0.00 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 (49 simplex iterations) in 0.06 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%