Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:03:42 2012 Optimize a model with 8802 rows, 2970 columns and 29160 nonzeros Presolve time: 0.08s Presolved: 8802 rows, 2970 columns, 29599 nonzeros Variable types: 0 continuous, 2970 integer (2970 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 2.000000e+00, 3285 iterations, 0.15 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 108 32.00000 2.00000 93.8% - 0s H 0 0 11.0000000 2.00000 81.8% - 0s H 0 0 5.0000000 2.00000 60.0% - 1s 0 0 2.00000 0 108 5.00000 2.00000 60.0% - 1s 0 0 2.00000 0 108 5.00000 2.00000 60.0% - 3s 0 0 2.00000 0 108 5.00000 2.00000 60.0% - 6s 0 0 2.00000 0 108 5.00000 2.00000 60.0% - 9s 0 0 2.00000 0 108 5.00000 2.00000 60.0% - 12s 0 0 2.00000 0 108 5.00000 2.00000 60.0% - 14s 0 2 2.00000 0 108 5.00000 2.00000 60.0% - 20s 1 3 3.00000 1 660 5.00000 2.00000 60.0% 24315 26s 2 4 3.00000 1 400 5.00000 3.00000 40.0% 18028 30s * 26 9 19 4.0000000 3.00000 25.0% 1564 30s 73 6 3.00000 3 323 4.00000 3.00000 25.0% 913 35s Cutting planes: Clique: 115 Explored 108 nodes (135453 simplex iterations) in 38.60 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%