Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:29:43 2012 Optimize a model with 58910 rows, 48180 columns and 223816 nonzeros Presolve removed 897 rows and 4163 columns Presolve time: 4.14s Presolved: 58013 rows, 44017 columns, 216935 nonzeros Variable types: 0 continuous, 44017 integer (44017 binary) Found heuristic solution: objective 219.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 32282 3.0000815e+00 1.828571e+01 0.000000e+00 5s 37602 3.0000855e+00 4.841171e+01 0.000000e+00 10s 41382 3.0000894e+00 3.975803e+01 0.000000e+00 15s 45302 3.0000943e+00 5.502148e+02 0.000000e+00 20s 49502 3.0001004e+00 6.502132e+00 0.000000e+00 25s 51676 3.0000000e+00 0.000000e+00 0.000000e+00 28s Root relaxation: objective 3.000000e+00, 51676 iterations, 27.72 seconds Total elapsed time = 64.18s Total elapsed time = 68.27s 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% - 68s Explored 0 nodes (145149 simplex iterations) in 68.99 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%