Gurobi 5.0.1 (linux64) logging started Sat Nov 17 07:50:34 2012 Optimize a model with 69914 rows, 56406 columns and 264964 nonzeros Presolve removed 2155 rows and 5214 columns (presolve time = 5s) ... Presolve removed 2157 rows and 5216 columns Presolve time: 6.17s Presolved: 67757 rows, 51190 columns, 253964 nonzeros Variable types: 0 continuous, 51190 integer (51190 binary) Found heuristic solution: objective 237.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 38494 3.0000835e+00 3.342857e+02 0.000000e+00 5s 45425 3.0001051e+00 3.805807e+02 0.000000e+00 10s 48575 3.0001095e+00 5.394647e+02 0.000000e+00 15s 51125 3.0001169e+00 4.480037e+01 0.000000e+00 20s 53825 3.0001239e+00 2.814458e+02 0.000000e+00 25s 56675 3.0001310e+00 2.405355e+02 0.000000e+00 30s 59075 3.0001351e+00 6.013970e+01 0.000000e+00 35s 61925 3.0001413e+00 8.674200e+01 0.000000e+00 40s 64325 3.0001450e+00 1.417304e+02 0.000000e+00 45s 66875 3.0001486e+00 7.535314e+01 0.000000e+00 50s 69275 3.0001524e+00 2.237247e+02 0.000000e+00 55s 71675 3.0001554e+00 8.920716e+02 0.000000e+00 60s 74075 3.0001587e+00 2.975540e+01 0.000000e+00 65s 76475 3.0001614e+00 1.439707e+01 0.000000e+00 70s 78725 3.0001646e+00 1.994994e+01 0.000000e+00 75s 81275 3.0001685e+00 3.491017e+02 0.000000e+00 80s 83525 3.0001712e+00 1.153661e+01 0.000000e+00 85s 85625 3.0001739e+00 2.435609e+01 0.000000e+00 90s 87875 3.0001767e+00 4.306923e+02 0.000000e+00 95s 90125 3.0001807e+00 1.853671e+02 0.000000e+00 100s 92225 3.0001825e+00 2.185140e+00 0.000000e+00 105s 92837 3.0000000e+00 0.000000e+00 0.000000e+00 106s Root relaxation: objective 3.000000e+00, 92837 iterations, 106.27 seconds Total elapsed time = 179.89s Total elapsed time = 194.55s Total elapsed time = 215.69s 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% - 220s Explored 0 nodes (230035 simplex iterations) in 220.43 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%