Gurobi 5.0.1 (linux64) logging started Sat Nov 17 04:52:15 2012 Optimize a model with 61062 rows, 51756 columns and 233808 nonzeros Presolve removed 481 rows and 5677 columns Presolve time: 1.63s Presolved: 60581 rows, 46079 columns, 226464 nonzeros Variable types: 0 continuous, 46079 integer (46079 binary) Found heuristic solution: objective 227.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 37093 3.0000877e+00 2.970108e+02 0.000000e+00 5s 42489 3.0001011e+00 4.986944e+01 0.000000e+00 10s 46891 3.0001049e+00 2.775166e+02 0.000000e+00 15s 50867 3.0001079e+00 3.196455e+02 0.000000e+00 20s 54559 3.0001103e+00 2.149590e+02 0.000000e+00 25s 58109 3.0001123e+00 7.504454e+01 0.000000e+00 30s 61517 3.0001143e+00 9.705429e+01 0.000000e+00 35s 64925 3.0001160e+00 6.450264e+01 0.000000e+00 40s 68333 3.0001178e+00 7.851917e+01 0.000000e+00 45s 71599 3.0001197e+00 1.021700e+02 0.000000e+00 50s 74865 3.0001213e+00 1.741016e+02 0.000000e+00 55s 77989 3.0001230e+00 1.050166e+01 0.000000e+00 60s 81113 3.0001252e+00 1.105884e+01 0.000000e+00 65s 84237 3.0001268e+00 4.110429e+00 0.000000e+00 70s 84412 3.0000000e+00 0.000000e+00 0.000000e+00 70s Root relaxation: objective 3.000000e+00, 84412 iterations, 70.39 seconds Total elapsed time = 118.13s Total elapsed time = 127.83s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 120 227.00000 3.00000 98.7% - 132s H 0 0 3.0000000 3.00000 0.0% - 132s Explored 0 nodes (173452 simplex iterations) in 132.96 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%