Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:35:06 2013 Optimize a model with 1372 rows, 31079 columns and 1552582 nonzeros Presolve removed 20 rows and 40 columns Presolve time: 4.19s Presolved: 1352 rows, 31039 columns, 1551646 nonzeros Variable types: 0 continuous, 31039 integer (31039 binary) Found heuristic solution: objective 13220.000000 Root relaxation: objective 1.124950e+04, 7453 iterations, 4.49 seconds Total elapsed time = 10.02s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 11249.5000 0 108 13220.0000 11249.5000 14.9% - 10s H 0 0 11429.000000 11249.5000 1.57% - 10s * 0 0 0 11275.000000 11275.0000 0.0% - 12s Cutting planes: Clique: 14 Zero half: 15 Explored 0 nodes (9188 simplex iterations) in 12.82 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.127500000000e+04, best bound 1.127500000000e+04, gap 0.0%