Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:11:18 2012 Optimize a model with 45304 rows, 42230 columns and 177118 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 1.06s Presolved: 45507 rows, 42228 columns, 218701 nonzeros Variable types: 0 continuous, 42228 integer (42228 binary) Found heuristic solution: objective 205.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 453 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 0 346 3.00000 2.00000 33.3% - 1s 0 0 infeasible 0 3.00000 2.00000 33.3% - 1s Explored 0 nodes (843 simplex iterations) in 1.36 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%