Gurobi 5.0.1 (linux64) logging started Fri Nov 16 13:06:29 2012 Optimize a model with 19418 rows, 5402 columns and 63364 nonzeros Presolve time: 0.15s Presolved: 19418 rows, 5402 columns, 63484 nonzeros Variable types: 0 continuous, 5402 integer (5402 binary) Found heuristic solution: objective 46.0000000 Root relaxation: objective 2.000000e+00, 5206 iterations, 0.25 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 146 46.00000 2.00000 95.7% - 1s H 0 0 19.0000000 2.00000 89.5% - 1s H 0 0 5.0000000 2.00000 60.0% - 1s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 6s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 18s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 29s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 41s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 54s 0 0 2.00000 0 146 5.00000 2.00000 60.0% - 62s 0 2 2.00000 0 146 5.00000 2.00000 60.0% - 98s 1 3 3.00000 1 840 5.00000 2.00000 60.0% 52292 113s 2 4 3.00000 1 1030 5.00000 3.00000 40.0% 37960 125s 6 4 3.50000 3 582 5.00000 3.00000 40.0% 14474 130s 9 5 4.00000 4 134 5.00000 3.00000 40.0% 11269 135s 30 12 cutoff 18 5.00000 3.00000 40.0% 3958 140s 39 11 3.33333 3 153 5.00000 3.33333 33.3% 3651 146s H 55 1 4.0000000 3.33333 16.7% 2628 149s Cutting planes: Clique: 154 Explored 55 nodes (270794 simplex iterations) in 149.27 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%