Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:19:50 2013 Optimize a model with 1100 rows, 19698 columns and 971875 nonzeros Presolve removed 58 rows and 433 columns (presolve time = 6s) ... Presolve removed 58 rows and 444 columns Presolve time: 7.81s Presolved: 1042 rows, 19254 columns, 946144 nonzeros Variable types: 0 continuous, 19254 integer (19254 binary) Found heuristic solution: objective 10457.000000 Root relaxation: objective 7.082444e+03, 4558 iterations, 1.82 seconds Total elapsed time = 10.09s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 7082.44444 0 107 10457.0000 7082.44444 32.3% - 10s H 0 0 7240.0000000 7082.44444 2.18% - 11s * 0 0 0 7094.0000000 7094.00000 0.0% - 12s Cutting planes: Clique: 13 Zero half: 23 Explored 0 nodes (5749 simplex iterations) in 12.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.094000000000e+03, best bound 7.094000000000e+03, gap 0.0%