Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:40:02 2012 Optimize a model with 39167 rows, 37056 columns and 153598 nonzeros Presolve removed 770 rows and 2 columns Presolve time: 1.08s Presolved: 38589 rows, 37054 columns, 188142 nonzeros Variable types: 0 continuous, 37054 integer (37054 binary) Found heuristic solution: objective 192.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 310 iterations, 0.02 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% - 1s Explored 0 nodes (310 simplex iterations) in 1.20 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%