Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:52:30 2012 Optimize a model with 10740 rows, 3660 columns and 35640 nonzeros Presolve time: 0.09s Presolved: 10740 rows, 3660 columns, 35937 nonzeros Variable types: 0 continuous, 3660 integer (3660 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 2.000000e+00, 4006 iterations, 0.23 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 120 40.00000 2.00000 95.0% - 2s H 0 0 14.0000000 2.00000 85.7% - 2s H 0 0 5.0000000 2.00000 60.0% - 2s 0 0 2.00000 0 120 5.00000 2.00000 60.0% - 2s 0 0 2.00000 0 120 5.00000 2.00000 60.0% - 6s 0 0 2.00000 0 120 5.00000 2.00000 60.0% - 10s H 0 0 4.0000000 2.00000 50.0% - 11s 0 0 2.00000 0 120 4.00000 2.00000 50.0% - 15s 0 0 2.00000 0 120 4.00000 2.00000 50.0% - 20s 0 0 2.00000 0 120 4.00000 2.00000 50.0% - 24s 0 2 2.00000 0 120 4.00000 2.00000 50.0% - 35s 1 3 3.00000 1 404 4.00000 2.00000 50.0% 27501 42s 2 4 3.00000 1 636 4.00000 3.00000 25.0% 36630 59s 3 5 3.00000 2 469 4.00000 3.00000 25.0% 25120 60s 18 8 3.00000 5 214 4.00000 3.00000 25.0% 5324 65s 31 5 cutoff 6 4.00000 3.00000 25.0% 3857 70s 56 0 cutoff 4 4.00000 4.00000 0.0% 2590 75s Cutting planes: Clique: 131 Explored 57 nodes (212645 simplex iterations) in 75.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%