Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:24:02 2012 Optimize a model with 37232 rows, 35910 columns and 146662 nonzeros Presolve removed 391 rows and 2081 columns Presolve time: 0.89s Presolved: 36841 rows, 33829 columns, 143248 nonzeros Variable types: 0 continuous, 33829 integer (33829 binary) Found heuristic solution: objective 189.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 28965 3.0000808e+00 4.276673e+00 0.000000e+00 5s 30538 3.0000000e+00 0.000000e+00 0.000000e+00 6s Root relaxation: objective 3.000000e+00, 30538 iterations, 6.32 seconds Total elapsed time = 26.07s 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% - 27s Explored 0 nodes (72256 simplex iterations) in 27.41 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%