Gurobi 5.0.1 (linux64) logging started Sat Nov 17 08:24:03 2012 Optimize a model with 71221 rows, 57360 columns and 269829 nonzeros Presolve removed 503 rows and 5975 columns (presolve time = 5s) ... Presolve removed 505 rows and 5977 columns Presolve time: 5.72s Presolved: 70716 rows, 51383 columns, 262067 nonzeros Variable types: 0 continuous, 51383 integer (51383 binary) Found heuristic solution: objective 239.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 37001 3.0001009e+00 3.455000e+02 0.000000e+00 5s 42230 3.0001395e+00 1.191818e+02 0.000000e+00 10s 46092 3.0001544e+00 1.166000e+02 0.000000e+00 15s 49458 3.0001694e+00 3.116102e+02 0.000000e+00 20s 52671 3.0001773e+00 2.234293e+02 0.000000e+00 25s 55425 3.0001815e+00 1.024407e+02 0.000000e+00 30s 58179 3.0001851e+00 7.459473e+02 0.000000e+00 35s 60933 3.0001890e+00 1.293472e+02 0.000000e+00 40s 63687 3.0001925e+00 5.588599e+01 0.000000e+00 45s 66135 3.0001954e+00 1.716914e+02 0.000000e+00 50s 68736 3.0001987e+00 2.459434e+02 0.000000e+00 55s 71184 3.0002015e+00 5.030302e+02 0.000000e+00 60s 73632 3.0002037e+00 5.476179e+01 0.000000e+00 65s 76233 3.0002068e+00 4.859197e+02 0.000000e+00 70s 78528 3.0002086e+00 2.769054e+01 0.000000e+00 75s 80823 3.0002105e+00 1.564726e+01 0.000000e+00 80s 83271 3.0002123e+00 2.409837e+01 0.000000e+00 85s 85719 3.0002137e+00 3.316731e+01 0.000000e+00 90s 88167 3.0002152e+00 1.262416e+01 0.000000e+00 95s 90462 3.0002164e+00 3.001709e+01 0.000000e+00 100s 92910 3.0002174e+00 5.683077e+01 0.000000e+00 105s 95358 3.0002180e+00 5.234575e-01 0.000000e+00 110s 96211 3.0000000e+00 0.000000e+00 0.000000e+00 112s Root relaxation: objective 3.000000e+00, 96211 iterations, 111.84 seconds Total elapsed time = 171.23s Total elapsed time = 221.33s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 80 239.00000 3.00000 98.7% - 222s H 0 0 3.0000000 3.00000 0.0% - 222s Explored 0 nodes (199897 simplex iterations) in 222.90 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%