Gurobi 5.0.1 (linux64) logging started Fri Nov 16 08:59:41 2012 Optimize a model with 15340 rows, 4290 columns and 50050 nonzeros Presolve time: 0.12s Presolved: 15340 rows, 4290 columns, 50275 nonzeros Variable types: 0 continuous, 4290 integer (4290 binary) Found heuristic solution: objective 43.0000000 Root relaxation: objective 2.000000e+00, 7048 iterations, 1.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 130 43.00000 2.00000 95.3% - 4s H 0 0 14.0000000 2.00000 85.7% - 4s H 0 0 5.0000000 2.00000 60.0% - 4s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 4s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 10s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 15s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 20s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 28s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 33s 0 2 2.00000 0 130 5.00000 2.00000 60.0% - 52s 1 3 3.00000 1 679 5.00000 2.00000 60.0% 35679 60s 2 4 3.00000 1 610 5.00000 3.00000 40.0% 26709 67s 9 7 3.14286 4 196 5.00000 3.00000 40.0% 7813 71s 38 22 3.00000 3 308 5.00000 3.00000 40.0% 2109 75s 46 24 4.00000 7 106 5.00000 3.00000 40.0% 2284 80s * 60 9 19 4.0000000 3.00000 25.0% 1806 81s 69 6 cutoff 5 4.00000 3.00000 25.0% 1808 86s 75 6 cutoff 6 4.00000 3.00000 25.0% 1902 91s 81 4 3.00000 4 128 4.00000 3.00000 25.0% 2063 95s Cutting planes: Clique: 155 Explored 86 nodes (290196 simplex iterations) in 99.59 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%