Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:58:40 2012 Optimize a model with 39591 rows, 38612 columns and 156406 nonzeros Presolve removed 1766 rows and 2 columns Presolve time: 0.99s Presolved: 38021 rows, 38610 columns, 190124 nonzeros Variable types: 0 continuous, 38610 integer (38610 binary) Found heuristic solution: objective 196.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 22928 3.0000777e+00 8.319015e+01 0.000000e+00 5s 25251 3.0000000e+00 0.000000e+00 0.000000e+00 6s Root relaxation: objective 3.000000e+00, 25251 iterations, 6.45 seconds Total elapsed time = 16.43s 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 (69468 simplex iterations) in 19.54 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%