Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:27:34 2012 Optimize a model with 37809 rows, 36290 columns and 148768 nonzeros Presolve removed 420 rows and 7222 columns Presolve time: 0.89s Presolved: 37389 rows, 29068 columns, 140204 nonzeros Variable types: 0 continuous, 29068 integer (29068 binary) Found heuristic solution: objective 190.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 286 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% - 0s Explored 0 nodes (286 simplex iterations) in 1.00 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%