Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:11:50 2012 Optimize a model with 44351 rows, 39402 columns and 171466 nonzeros Presolve removed 1213 rows and 4556 columns Presolve time: 1.10s Presolved: 43138 rows, 34846 columns, 163506 nonzeros Variable types: 0 continuous, 34846 integer (34846 binary) Found heuristic solution: objective 198.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 26189 3.0000758e+00 1.908696e+01 0.000000e+00 5s 31640 3.0000000e+00 0.000000e+00 0.000000e+00 9s Root relaxation: objective 3.000000e+00, 31640 iterations, 9.08 seconds Total elapsed time = 24.87s Total elapsed time = 27.37s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 31s Explored 0 nodes (118020 simplex iterations) in 31.39 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%