Gurobi 5.0.1 (linux64) logging started Sat Nov 17 10:00:18 2012 Optimize a model with 71003 rows, 59780 columns and 271570 nonzeros Presolve removed 25 rows and 5614 columns Presolve time: 1.80s Presolved: 70978 rows, 54166 columns, 265376 nonzeros Variable types: 0 continuous, 54166 integer (54166 binary) Found heuristic solution: objective 244.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 511 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 430 3.00000 2.00000 33.3% - 2s 0 0 infeasible 0 3.00000 2.00000 33.3% - 2s Explored 0 nodes (939 simplex iterations) in 2.22 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%