Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:22:34 2012 Optimize a model with 34397 rows, 35910 columns and 138157 nonzeros Presolve removed 403 rows and 4349 columns Presolve time: 0.83s Presolved: 33994 rows, 31561 columns, 132505 nonzeros Variable types: 0 continuous, 31561 integer (31561 binary) Found heuristic solution: objective 189.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 25210 3.0000765e+00 5.230962e+01 0.000000e+00 5s 26057 3.0000000e+00 0.000000e+00 0.000000e+00 6s Root relaxation: objective 3.000000e+00, 26057 iterations, 5.72 seconds Total elapsed time = 17.81s 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% - 19s Explored 0 nodes (62420 simplex iterations) in 19.24 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%