Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:40:10 2013 Optimize a model with 1440 rows, 34436 columns and 1786541 nonzeros Presolve removed 20 rows and 82 columns Presolve time: 5.04s Presolved: 1420 rows, 34354 columns, 1781129 nonzeros Variable types: 0 continuous, 34354 integer (34354 binary) Found heuristic solution: objective 17664.000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 8845 1.3113327e+04 1.915641e+02 0.000000e+00 5s 10057 1.3120667e+04 0.000000e+00 0.000000e+00 7s Root relaxation: objective 1.312067e+04, 10057 iterations, 6.69 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13120.6667 0 53 17664.0000 13120.6667 25.7% - 12s H 0 0 14185.000000 13120.6667 7.50% - 13s H 0 0 14137.000000 13120.6667 7.19% - 26s 0 0 13123.4634 0 202 14137.0000 13123.4634 7.17% - 32s 0 0 13125.5000 0 50 14137.0000 13125.5000 7.15% - 37s * 0 0 0 13126.000000 13126.0000 0.0% - 38s Cutting planes: Clique: 11 Zero half: 3 Explored 0 nodes (11795 simplex iterations) in 38.61 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.312600000000e+04, best bound 1.312600000000e+04, gap 0.0%