Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:26:37 2013 Optimize a model with 51262 rows, 50552 columns and 201782 nonzeros Presolve removed 71 rows and 0 columns Presolve time: 0.23s Presolved: 51191 rows, 50552 columns, 201711 nonzeros Variable types: 50481 continuous, 71 integer (71 binary) Root relaxation: objective 6.035710e+04, 6314 iterations, 3.33 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 60357.0981 0 54 - 60357.0981 - - 3s H 0 0 94509.000000 60357.0981 36.1% - 5s 0 0 72760.0992 0 9 94509.0000 72760.0992 23.0% - 11s H 0 0 83357.764117 72760.0992 12.7% - 11s H 0 0 76345.000000 72760.0992 4.70% - 12s 0 0 74069.2935 0 6 76345.0000 74069.2935 2.98% - 13s 0 0 74700.2847 0 3 76345.0000 74700.2847 2.15% - 14s H 0 0 76249.727844 74700.2847 2.03% - 14s H 0 0 75593.000000 74700.2847 1.18% - 14s H 0 0 74798.000000 74700.2847 0.13% - 14s 0 0 74703.6459 0 2 74798.0000 74703.6459 0.13% - 14s 0 0 74735.6286 0 1 74798.0000 74735.6286 0.08% - 15s H 0 0 74744.000000 74735.6286 0.01% - 15s 0 0 74735.6286 0 46 74744.0000 74735.6286 0.01% - 19s 0 0 74735.6286 0 5 74744.0000 74735.6286 0.01% - 23s 0 0 74735.6286 0 3 74744.0000 74735.6286 0.01% - 24s 0 0 74735.6286 0 1 74744.0000 74735.6286 0.01% - 24s Cutting planes: Gomory: 3 Implied bound: 50 Explored 0 nodes (21689 simplex iterations) in 25.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.474400000000e+04, best bound 7.474400000000e+04, gap 0.0%