Gurobi 5.0.1 (linux64) logging started Sat Nov 17 10:44:54 2012 Optimize a model with 84226 rows, 61256 columns and 312700 nonzeros Presolve removed 1500 rows and 4446 columns (presolve time = 5s) ... Presolve removed 1502 rows and 4448 columns Presolve time: 7.48s Presolved: 82724 rows, 56808 columns, 303879 nonzeros Variable types: 0 continuous, 56808 integer (56808 binary) Found heuristic solution: objective 247.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 34896 3.0000942e+00 3.441379e+01 0.000000e+00 5s 38504 3.0000983e+00 1.170000e+02 0.000000e+00 10s 41456 3.0001002e+00 3.529999e+02 0.000000e+00 15s 43916 3.0001021e+00 7.412990e+02 0.000000e+00 20s 46540 3.0001043e+00 8.228765e+01 0.000000e+00 25s 49164 3.0001065e+00 4.027333e+01 0.000000e+00 30s 51460 3.0001080e+00 4.454147e+01 0.000000e+00 35s 53920 3.0001099e+00 6.429677e+01 0.000000e+00 40s 56380 3.0001125e+00 3.893921e+01 0.000000e+00 45s 58676 3.0001144e+00 1.743473e+01 0.000000e+00 50s 60972 3.0001163e+00 1.041498e+01 0.000000e+00 55s 63104 3.0001175e+00 4.679987e+01 0.000000e+00 60s 65400 3.0001189e+00 4.937838e+01 0.000000e+00 65s 67696 3.0001214e+00 9.059354e+00 0.000000e+00 70s 70320 3.0001252e+00 6.373239e+00 0.000000e+00 75s 72460 3.0000000e+00 0.000000e+00 0.000000e+00 77s Root relaxation: objective 3.000000e+00, 72460 iterations, 77.36 seconds Total elapsed time = 180.08s Total elapsed time = 214.27s Total elapsed time = 220.65s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 105 247.00000 3.00000 98.8% - 222s H 0 0 3.0000000 3.00000 0.0% - 223s Explored 0 nodes (247372 simplex iterations) in 223.09 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%