Gurobi 5.0.1 (linux64) logging started Sat Nov 17 05:02:14 2012 Optimize a model with 59700 rows, 51756 columns and 229722 nonzeros Presolve removed 456 rows and 2 columns Presolve time: 1.46s Presolved: 59471 rows, 51754 columns, 279594 nonzeros Variable types: 0 continuous, 51754 integer (51754 binary) Found heuristic solution: objective 227.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 36382 3.0000816e+00 4.394118e+01 0.000000e+00 5s 42440 3.0000915e+00 1.571945e+02 0.000000e+00 10s 45824 3.0000944e+00 9.106069e+01 0.000000e+00 15s 49349 3.0000971e+00 1.150323e+02 0.000000e+00 20s 52733 3.0000998e+00 4.583525e+02 0.000000e+00 25s 55976 3.0001022e+00 1.937161e+01 0.000000e+00 30s 59360 3.0001045e+00 2.981514e+01 0.000000e+00 35s 63026 3.0001080e+00 1.112579e+01 0.000000e+00 40s 64377 3.0000000e+00 0.000000e+00 0.000000e+00 42s Root relaxation: objective 3.000000e+00, 64377 iterations, 41.81 seconds Total elapsed time = 83.08s Total elapsed time = 85.23s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 50 227.00000 3.00000 98.7% - 92s H 0 0 3.0000000 3.00000 0.0% - 92s Explored 0 nodes (153301 simplex iterations) in 92.36 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%