Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:04:14 2013 Optimize a model with 59711 rows, 5041 columns and 181476 nonzeros Presolve removed 5636 rows and 2577 columns Presolve time: 0.41s Presolved: 54075 rows, 2464 columns, 163924 nonzeros Variable types: 25 continuous, 2439 integer (2439 binary) Found heuristic solution: objective 127180.00000 Root relaxation: objective 9.999137e+04, 13748 iterations, 1.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 99991.3684 0 11 127180.000 99991.3684 21.4% - 1s H 0 0 100018.00000 99991.3684 0.03% - 1s H 0 0 100008.00000 99991.3684 0.02% - 1s 0 0 99992.0000 0 14 100008.000 99992.0000 0.02% - 2s 0 0 99992.0000 0 15 100008.000 99992.0000 0.02% - 2s H 0 0 100005.00000 99992.0000 0.01% - 2s H 0 0 100003.00000 99992.0000 0.01% - 2s 0 0 99992.0000 0 28 100003.000 99992.0000 0.01% - 2s 0 2 99992.0000 0 27 100003.000 99992.0000 0.01% - 2s H 4 3 100001.00000 99992.0000 0.01% 18.0 2s Cutting planes: Gomory: 1 Implied bound: 1 MIR: 7 Explored 4 nodes (17107 simplex iterations) in 2.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000010000000e+05, best bound 9.999200000000e+04, gap 0.0090%