Gurobi 5.0.1 (linux64) logging started Sat Nov 17 09:16:49 2012 Optimize a model with 73809 rows, 58806 columns and 279024 nonzeros Presolve removed 504 rows and 4840 columns (presolve time = 5s) ... Presolve removed 506 rows and 4842 columns Presolve time: 5.94s Presolved: 73303 rows, 53964 columns, 272368 nonzeros Variable types: 0 continuous, 53964 integer (53964 binary) Found heuristic solution: objective 242.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 40012 3.0001088e+00 9.052500e+02 0.000000e+00 5s 46279 3.0001535e+00 1.203000e+02 0.000000e+00 10s 50970 3.0001698e+00 3.875000e+01 0.000000e+00 15s 55465 3.0001781e+00 2.503631e+02 0.000000e+00 20s 58100 3.0001825e+00 4.122214e+02 0.000000e+00 25s 60890 3.0001875e+00 6.561004e+01 0.000000e+00 30s 63680 3.0001920e+00 2.266971e+02 0.000000e+00 35s 66470 3.0001965e+00 1.555741e+01 0.000000e+00 40s 69105 3.0002016e+00 4.035000e+02 0.000000e+00 45s 72050 3.0002079e+00 1.520004e+01 0.000000e+00 50s 74685 3.0002127e+00 3.413169e+01 0.000000e+00 55s 77165 3.0002153e+00 3.366369e+01 0.000000e+00 60s 79800 3.0002190e+00 4.464639e+01 0.000000e+00 65s 82280 3.0002218e+00 4.897016e+00 0.000000e+00 70s 84760 3.0002235e+00 1.334994e+01 0.000000e+00 75s 87395 3.0002252e+00 8.902586e+01 0.000000e+00 80s 90030 3.0002265e+00 3.891010e+00 0.000000e+00 85s 92665 3.0002273e+00 5.082345e-01 0.000000e+00 90s 93771 3.0000000e+00 0.000000e+00 0.000000e+00 93s Root relaxation: objective 3.000000e+00, 93771 iterations, 92.60 seconds Total elapsed time = 154.72s 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% - 159s Explored 0 nodes (174643 simplex iterations) in 159.88 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%