Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:47:55 2012 Optimize a model with 51413 rows, 43890 columns and 197085 nonzeros Presolve removed 420 rows and 2 columns Presolve time: 1.28s Presolved: 51202 rows, 43888 columns, 239233 nonzeros Variable types: 0 continuous, 43888 integer (43888 binary) Found heuristic solution: objective 209.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 37308 3.0000764e+00 7.158529e+01 0.000000e+00 5s 43380 3.0000874e+00 1.080814e+02 0.000000e+00 10s 47604 3.0000909e+00 5.930767e+01 0.000000e+00 15s 51696 3.0000942e+00 7.031934e+01 0.000000e+00 20s 55656 3.0000952e+00 7.131828e+00 0.000000e+00 25s 56977 3.0000000e+00 0.000000e+00 0.000000e+00 27s Root relaxation: objective 3.000000e+00, 56977 iterations, 26.65 seconds Total elapsed time = 64.28s Total elapsed time = 95.77s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 70 209.00000 3.00000 98.6% - 96s H 0 0 3.0000000 3.00000 0.0% - 96s Explored 0 nodes (144050 simplex iterations) in 96.68 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%