Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:12:50 2012 Optimize a model with 2834 rows, 2070 columns and 10348 nonzeros Presolve removed 411 rows and 182 columns Presolve time: 0.10s Presolved: 2423 rows, 1888 columns, 9070 nonzeros Variable types: 0 continuous, 1888 integer (1888 binary) Found heuristic solution: objective 45.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 80 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 (80 simplex iterations) in 0.11 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%