Gurobi 5.0.1 (linux64) logging started Mon Feb 4 17:31:52 2013 Optimize a model with 1461 rows, 44233 columns and 1796567 nonzeros Presolve removed 30 rows and 119 columns Presolve time: 4.70s Presolved: 1431 rows, 44114 columns, 1792983 nonzeros Variable types: 0 continuous, 44114 integer (44114 binary) Found heuristic solution: objective 22788.000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 9613 1.4522187e+04 2.192863e+02 0.000000e+00 5s 14119 1.4634499e+04 6.034186e+02 0.000000e+00 10s 15297 1.4638000e+04 0.000000e+00 0.000000e+00 12s Root relaxation: objective 1.463800e+04, 15297 iterations, 12.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14638.0000 0 183 22788.0000 14638.0000 35.8% - 18s H 0 0 14686.000000 14638.0000 0.33% - 25s H 0 0 14655.000000 14638.0000 0.12% - 26s * 0 0 0 14639.000000 14639.0000 0.0% - 27s Cutting planes: Clique: 22 Zero half: 51 Explored 0 nodes (16152 simplex iterations) in 27.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.463900000000e+04, best bound 1.463900000000e+04, gap 0.0000%