Gurobi 5.0.1 (linux64) logging started Fri Nov 16 08:49:42 2012 Optimize a model with 13260 rows, 4290 columns and 43810 nonzeros Presolve time: 0.10s Presolved: 13260 rows, 4290 columns, 44013 nonzeros Variable types: 0 continuous, 4290 integer (4290 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 2.000000e+00, 8711 iterations, 1.68 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 130 41.00000 2.00000 95.1% - 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 0 130 5.00000 2.00000 60.0% - 2s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 3s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 4s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 5s H 0 0 4.0000000 2.00000 50.0% - 5s 0 0 2.00000 0 130 4.00000 2.00000 50.0% - 6s 0 0 2.00000 0 130 4.00000 2.00000 50.0% - 7s 0 2 2.00000 0 130 4.00000 2.00000 50.0% - 11s 1 3 3.00000 1 863 4.00000 2.00340 49.9% 18444 18s 2 4 3.00000 1 695 4.00000 3.00000 25.0% 14532 23s 5 5 3.00000 3 128 4.00000 3.00000 25.0% 7258 25s 15 5 3.00000 5 118 4.00000 3.00000 25.0% 3548 30s 27 3 cutoff 6 4.00000 3.00000 25.0% 2570 35s 32 2 cutoff 4 4.00000 3.00000 25.0% 2750 41s 42 2 3.00000 3 120 4.00000 3.00000 25.0% 2344 45s Cutting planes: Clique: 49 Explored 45 nodes (133181 simplex iterations) in 48.23 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%