Gurobi 5.0.1 (linux64) logging started Sat Nov 17 07:06:46 2012 Optimize a model with 70199 rows, 54990 columns and 264418 nonzeros Presolve removed 954 rows and 4212 columns (presolve time = 5s) ... Presolve removed 956 rows and 4214 columns Presolve time: 5.85s Presolved: 69243 rows, 50776 columns, 257274 nonzeros Variable types: 0 continuous, 50776 integer (50776 binary) Found heuristic solution: objective 234.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 37530 3.0000917e+00 3.559500e+02 0.000000e+00 5s 42350 3.0000999e+00 4.316096e+03 0.000000e+00 10s 45521 3.0001021e+00 3.187033e+01 0.000000e+00 15s 48541 3.0001046e+00 4.280923e+01 0.000000e+00 20s 51410 3.0001066e+00 8.774554e+01 0.000000e+00 25s 54128 3.0001083e+00 2.609948e+02 0.000000e+00 30s 56846 3.0001100e+00 9.315415e+01 0.000000e+00 35s 59715 3.0001124e+00 2.159540e+01 0.000000e+00 40s 62282 3.0001142e+00 1.145918e+01 0.000000e+00 45s 65151 3.0001174e+00 4.893935e+01 0.000000e+00 50s 67869 3.0001205e+00 1.186250e+02 0.000000e+00 55s 70285 3.0001225e+00 9.984654e+00 0.000000e+00 60s 72701 3.0001248e+00 7.115121e+00 0.000000e+00 65s 75597 3.0000000e+00 0.000000e+00 0.000000e+00 70s Root relaxation: objective 3.000000e+00, 75597 iterations, 69.50 seconds Total elapsed time = 148.76s Total elapsed time = 172.93s Total elapsed time = 175.51s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 78 234.00000 3.00000 98.7% - 175s H 0 0 3.0000000 3.00000 0.0% - 175s Explored 0 nodes (211712 simplex iterations) in 175.96 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%