Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:01:59 2012 Optimize a model with 30011 rows, 33672 columns and 122791 nonzeros Presolve removed 394 rows and 4760 columns Presolve time: 0.74s Presolved: 29617 rows, 28912 columns, 116794 nonzeros Variable types: 0 continuous, 28912 integer (28912 binary) Found heuristic solution: objective 183.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 263 iterations, 0.01 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 (263 simplex iterations) in 0.83 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%