Gurobi 5.0.1 (linux64) logging started Sat Nov 17 09:22:22 2012 Optimize a model with 73083 rows, 58806 columns and 276846 nonzeros Presolve removed 989 rows and 5082 columns (presolve time = 5s) ... Presolve removed 991 rows and 5084 columns Presolve time: 6.01s Presolved: 72092 rows, 53722 columns, 268748 nonzeros Variable types: 0 continuous, 53722 integer (53722 binary) Found heuristic solution: objective 242.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 35178 3.0000873e+00 3.994177e+01 0.000000e+00 5s 39336 3.0000920e+00 3.286364e+01 0.000000e+00 10s 42570 3.0000942e+00 3.008124e+01 0.000000e+00 15s 45342 3.0000964e+00 1.847812e+01 0.000000e+00 20s 48114 3.0000985e+00 2.240804e+01 0.000000e+00 25s 51040 3.0001003e+00 1.953663e+01 0.000000e+00 30s 53966 3.0001031e+00 8.258944e+02 0.000000e+00 35s 57046 3.0001069e+00 8.907611e+00 0.000000e+00 40s 60280 3.0001112e+00 3.857624e+01 0.000000e+00 45s 63052 3.0001149e+00 1.347641e+01 0.000000e+00 50s 65516 3.0001173e+00 1.194632e+01 0.000000e+00 55s 66451 3.0000000e+00 0.000000e+00 0.000000e+00 57s Root relaxation: objective 3.000000e+00, 66451 iterations, 57.32 seconds Total elapsed time = 131.81s Total elapsed time = 136.28s Total elapsed time = 140.24s 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% - 144s Explored 0 nodes (168507 simplex iterations) in 144.18 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%