Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:28:53 2012 Optimize a model with 9075 rows, 3080 columns and 30085 nonzeros Presolve time: 0.08s Presolved: 9075 rows, 3080 columns, 30540 nonzeros Variable types: 0 continuous, 3080 integer (3080 binary) Found heuristic solution: objective 34.0000000 Root relaxation: objective 2.000000e+00, 2995 iterations, 0.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 110 34.00000 2.00000 94.1% - 0s H 0 0 11.0000000 2.00000 81.8% - 0s H 0 0 5.0000000 2.00000 60.0% - 0s 0 0 2.00000 0 110 5.00000 2.00000 60.0% - 1s 0 0 2.00000 0 110 5.00000 2.00000 60.0% - 4s 0 0 2.00000 0 110 5.00000 2.00000 60.0% - 7s 0 0 2.00000 0 110 5.00000 2.00000 60.0% - 10s 0 0 2.00000 0 110 5.00000 2.00000 60.0% - 13s 0 0 2.00000 0 110 5.00000 2.00000 60.0% - 16s H 0 0 4.0000000 2.00000 50.0% - 23s 0 2 2.00000 0 110 4.00000 2.00000 50.0% - 28s 1 3 2.50000 1 111 4.00000 2.00000 50.0% 14358 30s 4 6 3.00000 2 401 4.00000 2.66667 33.3% 7377 35s 29 5 3.00000 3 96 4.00000 3.00000 25.0% 1699 40s Cutting planes: Clique: 147 Explored 41 nodes (123626 simplex iterations) in 44.05 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%