Gurobi 5.0.1 (linux64) logging started Fri Nov 16 13:34:28 2012 Optimize a model with 20572 rows, 5550 columns and 66970 nonzeros Presolve time: 0.15s Presolved: 20572 rows, 5550 columns, 67000 nonzeros Variable types: 0 continuous, 5550 integer (5550 binary) Found heuristic solution: objective 52.0000000 Root relaxation: objective 2.000000e+00, 5506 iterations, 0.26 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 148 52.00000 2.00000 96.2% - 1s H 0 0 17.0000000 2.00000 88.2% - 1s H 0 0 5.0000000 2.00000 60.0% - 1s 0 0 2.00000 0 148 5.00000 2.00000 60.0% - 7s 0 0 2.00000 0 148 5.00000 2.00000 60.0% - 15s 0 0 2.00000 0 148 5.00000 2.00000 60.0% - 30s 0 0 2.00000 0 148 5.00000 2.00000 60.0% - 39s 0 0 2.00000 0 148 5.00000 2.00000 60.0% - 50s 0 0 2.00000 0 148 5.00000 2.00000 60.0% - 58s 0 2 2.00000 0 148 5.00000 2.00000 60.0% - 85s 1 3 3.00000 1 956 5.00000 2.00000 60.0% 60823 103s 2 4 3.00000 1 861 5.00000 3.00000 40.0% 47627 119s 5 3 3.00000 2 477 5.00000 3.00000 40.0% 20556 122s 10 4 4.00000 4 251 5.00000 3.00000 40.0% 11176 126s 27 19 4.00000 18 110 5.00000 3.00000 40.0% 4690 132s 44 24 4.00000 4 154 5.00000 3.00000 40.0% 3317 138s 54 32 4.00000 12 130 5.00000 3.33333 33.3% 2847 140s 81 47 4.00000 13 110 5.00000 4.00000 20.0% 1959 146s * 116 2 20 4.0000000 4.00000 0.0% 1381 146s Cutting planes: Clique: 149 Explored 117 nodes (299297 simplex iterations) in 146.78 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%