Gurobi 5.0.1 (linux64) logging started Mon Feb 4 17:00:33 2013 Optimize a model with 1470 rows, 39201 columns and 1829118 nonzeros Presolve removed 8 rows and 20 columns Presolve time: 4.71s Presolved: 1462 rows, 39181 columns, 1828663 nonzeros Variable types: 0 continuous, 39181 integer (39181 binary) Found heuristic solution: objective 19190.000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 8282 1.3836076e+04 1.283619e+02 0.000000e+00 5s 9374 1.3843667e+04 0.000000e+00 0.000000e+00 7s Root relaxation: objective 1.384367e+04, 9374 iterations, 6.77 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13843.6667 0 77 19190.0000 13843.6667 27.9% - 12s H 0 0 13991.000000 13843.6667 1.05% - 14s 0 0 13846.0000 0 48 13991.0000 13846.0000 1.04% - 16s H 0 0 13978.000000 13846.0000 0.94% - 28s 0 0 13846.0000 0 48 13978.0000 13846.0000 0.94% - 33s 0 0 13853.6667 0 76 13978.0000 13853.6667 0.89% - 35s * 0 0 0 13854.000000 13854.0000 0.0% - 37s Cutting planes: Clique: 6 Zero half: 45 Explored 0 nodes (19982 simplex iterations) in 37.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.385400000000e+04, best bound 1.385400000000e+04, gap 0.0%