Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:42:51 2012 Optimize a model with 3730 rows, 8372 columns and 19108 nonzeros Presolve removed 184 rows and 2 columns Presolve time: 0.13s Presolved: 3637 rows, 8370 columns, 26856 nonzeros Variable types: 0 continuous, 8370 integer (8370 binary) Found heuristic solution: objective 91.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 121 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 (121 simplex iterations) in 0.14 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%