Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:07:48 2012 Optimize a model with 155 rows, 182 columns and 583 nonzeros Presolve removed 31 rows and 41 columns Presolve time: 0.00s Presolved: 124 rows, 141 columns, 459 nonzeros Variable types: 0 continuous, 141 integer (141 binary) Found heuristic solution: objective 13.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 18 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 (18 simplex iterations) in 0.01 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%