Gurobi 5.0.1 (linux64) logging started Fri Nov 16 10:54:13 2012 Optimize a model with 16767 rows, 4830 columns and 54855 nonzeros Presolve time: 0.12s Presolved: 16767 rows, 4830 columns, 54967 nonzeros Variable types: 0 continuous, 4830 integer (4830 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 2.000000e+00, 4823 iterations, 0.24 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% - 0s H 0 0 12.0000000 2.00000 83.3% - 0s H 0 0 5.0000000 2.00000 60.0% - 0s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 3s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 14s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 22s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 30s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 42s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 49s 0 2 2.00000 0 138 5.00000 2.00000 60.0% - 66s 1 3 3.00000 1 1013 5.00000 2.00000 60.0% 44735 77s 2 4 3.00000 1 717 5.00000 3.00000 40.0% 34144 86s 11 13 3.33333 8 158 5.00000 3.00000 40.0% 7542 90s 27 26 4.00000 22 110 5.00000 3.00000 40.0% 3177 98s 34 23 3.00000 2 246 5.00000 3.00000 40.0% 2644 100s 39 28 3.20000 5 196 5.00000 3.00000 40.0% 2917 106s * 51 8 13 4.0000000 3.00000 25.0% 2333 107s 57 2 cutoff 7 4.00000 3.00000 25.0% 2365 110s Cutting planes: Clique: 107 Explored 66 nodes (250399 simplex iterations) in 111.16 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%