Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:48:54 2012 Optimize a model with 11580 rows, 3660 columns and 38160 nonzeros Presolve time: 0.10s Presolved: 11580 rows, 3660 columns, 38479 nonzeros Variable types: 0 continuous, 3660 integer (3660 binary) Found heuristic solution: objective 43.0000000 Root relaxation: objective 2.000000e+00, 5627 iterations, 0.63 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 120 43.00000 2.00000 95.3% - 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% - 3s 0 0 2.00000 0 120 5.00000 2.00000 60.0% - 7s 0 0 2.00000 0 120 5.00000 2.00000 60.0% - 11s 0 0 2.00000 0 120 5.00000 2.00000 60.0% - 17s 0 0 2.00000 0 120 5.00000 2.00000 60.0% - 23s 0 0 2.00000 0 120 5.00000 2.00000 60.0% - 26s 0 2 2.00000 0 120 5.00000 2.00000 60.0% - 39s 1 3 3.00000 1 709 5.00000 2.00000 60.0% 38492 49s 2 4 3.00000 1 520 5.00000 3.00000 40.0% 21887 51s * 23 6 20 4.0000000 3.00000 25.0% 2186 53s 30 3 cutoff 4 4.00000 3.00000 25.0% 1997 55s 47 4 3.00000 2 601 4.00000 3.00000 25.0% 1677 60s 55 4 3.00000 5 118 4.00000 3.00000 25.0% 1685 65s 60 1 cutoff 6 4.00000 3.00000 25.0% 1921 70s Cutting planes: Clique: 99 Explored 72 nodes (205127 simplex iterations) in 74.86 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%