Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:47:13 2013 Optimize a model with 1000 rows, 25550 columns and 51900 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.18s Presolved: 950 rows, 25500 columns, 51600 nonzeros Variable types: 25350 continuous, 150 integer (150 binary) Root relaxation: objective 1.749223e+05, 1744 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 174922.321 0 4 - 174922.321 - - 0s H 0 0 212268.43955 174922.321 17.6% - 0s H 0 0 176215.21411 174922.321 0.73% - 0s 0 0 174945.567 0 4 176215.214 174945.567 0.72% - 0s 0 0 174955.104 0 4 176215.214 174955.104 0.72% - 0s 0 0 174958.504 0 4 176215.214 174958.504 0.71% - 0s 0 0 174958.504 0 4 176215.214 174958.504 0.71% - 0s 0 0 174958.504 0 4 176215.214 174958.504 0.71% - 0s 0 0 174958.504 0 4 176215.214 174958.504 0.71% - 0s 0 2 174960.816 0 4 176215.214 174960.816 0.71% - 0s * 15 2 14 175857.53946 175582.340 0.16% 30.1 1s Cutting planes: Flow cover: 8 Explored 18 nodes (3008 simplex iterations) in 1.48 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.758575394634e+05, best bound 1.758575394634e+05, gap 0.0%