Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:01:42 2012 Optimize a model with 56636 rows, 47306 columns and 216130 nonzeros Presolve removed 1539 rows and 3908 columns Presolve time: 1.45s Presolved: 55097 rows, 43398 columns, 208027 nonzeros Variable types: 0 continuous, 43398 integer (43398 binary) Found heuristic solution: objective 217.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 34328 3.0000805e+00 2.896667e+01 0.000000e+00 5s 39711 3.0000874e+00 3.394409e+01 0.000000e+00 10s 43519 3.0000914e+00 5.149199e+01 0.000000e+00 15s 47055 3.0000942e+00 1.768777e+02 0.000000e+00 20s 50727 3.0000975e+00 2.015722e+01 0.000000e+00 25s 54399 3.0001011e+00 1.136325e+02 0.000000e+00 30s 57935 3.0001049e+00 1.433575e+00 0.000000e+00 35s 58932 3.0000000e+00 0.000000e+00 0.000000e+00 37s Root relaxation: objective 3.000000e+00, 58932 iterations, 36.64 seconds Total elapsed time = 76.63s Total elapsed time = 81.29s 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% - 82s Explored 0 nodes (139706 simplex iterations) in 82.35 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%