Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:15:17 2012 Optimize a model with 62825 rows, 49506 columns and 236872 nonzeros Presolve removed 474 rows and 6218 columns Presolve time: 4.38s Presolved: 62351 rows, 43288 columns, 228984 nonzeros Variable types: 0 continuous, 43288 integer (43288 binary) Found heuristic solution: objective 222.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 34971 3.0001222e+00 2.577000e+02 0.000000e+00 5s 44823 3.0001462e+00 3.138462e+01 0.000000e+00 10s 49287 3.0001486e+00 1.066886e+02 0.000000e+00 15s 52455 3.0001565e+00 1.042765e+02 0.000000e+00 20s 55479 3.0001638e+00 7.565211e+02 0.000000e+00 25s 58503 3.0001708e+00 9.633016e+01 0.000000e+00 30s 61383 3.0001769e+00 1.706821e+01 0.000000e+00 35s 64263 3.0001826e+00 8.455803e+01 0.000000e+00 40s 67143 3.0001858e+00 8.328576e+02 0.000000e+00 45s 70023 3.0001895e+00 2.597875e+02 0.000000e+00 50s 72903 3.0001922e+00 2.793814e+00 0.000000e+00 55s 73311 3.0000000e+00 0.000000e+00 0.000000e+00 56s Root relaxation: objective 3.000000e+00, 73311 iterations, 56.06 seconds Total elapsed time = 108.20s Total elapsed time = 110.84s Total elapsed time = 118.75s 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% - 120s Explored 0 nodes (156864 simplex iterations) in 120.11 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%