Gurobi 5.0.1 (linux64) logging started Fri Nov 16 10:46:44 2012 Optimize a model with 14697 rows, 4830 columns and 48645 nonzeros Presolve time: 0.12s Presolved: 14697 rows, 4830 columns, 48807 nonzeros Variable types: 0 continuous, 4830 integer (4830 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 2.000000e+00, 6385 iterations, 0.57 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 138 41.00000 2.00000 95.1% - 3s H 0 0 14.0000000 2.00000 85.7% - 3s H 0 0 5.0000000 2.00000 60.0% - 3s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 5s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 12s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 20s H 0 0 4.0000000 2.00000 50.0% - 21s 0 0 2.00000 0 138 4.00000 2.00000 50.0% - 28s 0 0 2.00000 0 138 4.00000 2.00000 50.0% - 37s 0 0 2.00000 0 138 4.00000 2.00000 50.0% - 44s 0 2 2.00000 0 138 4.00000 2.00000 50.0% - 63s 1 3 3.00000 1 849 4.00000 2.00000 50.0% 34192 75s 2 4 3.00000 1 692 4.00000 3.00000 25.0% 47470 103s 4 2 infeasible 2 4.00000 3.00000 25.0% 25826 105s 15 1 cutoff 4 4.00000 3.00000 25.0% 8060 110s 22 2 3.00000 3 130 4.00000 3.00000 25.0% 6163 115s 27 1 cutoff 5 4.00000 3.00000 25.0% 5721 121s Cutting planes: Clique: 107 Explored 29 nodes (264550 simplex iterations) in 123.34 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%