Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:00:43 2012 Optimize a model with 45899 rows, 41820 columns and 178498 nonzeros Presolve removed 818 rows and 2 columns Presolve time: 1.08s Presolved: 45285 rows, 41818 columns, 217632 nonzeros Variable types: 0 continuous, 41818 integer (41818 binary) Found heuristic solution: objective 204.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 27456 3.0000810e+00 5.475728e+00 0.000000e+00 5s 33140 3.0000000e+00 0.000000e+00 0.000000e+00 10s Root relaxation: objective 3.000000e+00, 33140 iterations, 9.95 seconds Total elapsed time = 32.66s 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% - 34s Explored 0 nodes (82852 simplex iterations) in 34.02 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%