Gurobi 5.0.1 (linux64) logging started Fri Nov 16 13:42:53 2012 Optimize a model with 19980 rows, 5550 columns and 65194 nonzeros Presolve time: 0.16s Presolved: 19980 rows, 5550 columns, 65297 nonzeros Variable types: 0 continuous, 5550 integer (5550 binary) Found heuristic solution: objective 46.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 17388 1.9440028e+00 9.204969e+02 0.000000e+00 5s 23136 2.0000000e+00 0.000000e+00 0.000000e+00 8s Root relaxation: objective 2.000000e+00, 23136 iterations, 8.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 148 46.00000 2.00000 95.7% - 8s H 0 0 17.0000000 2.00000 88.2% - 8s H 0 0 5.0000000 2.00000 60.0% - 8s 0 0 2.00000 0 148 5.00000 2.00000 60.0% - 8s 0 0 2.00000 0 148 5.00000 2.00000 60.0% - 11s 0 0 2.00000 0 148 5.00000 2.00000 60.0% - 12s 0 0 2.00000 0 148 5.00000 2.00000 60.0% - 12s 0 0 2.00000 0 148 5.00000 2.00000 60.0% - 12s 0 0 2.00000 0 148 5.00000 2.00000 60.0% - 13s 0 2 2.00000 0 148 5.00000 2.00000 60.0% - 14s 1 3 3.00000 1 579 5.00000 2.00002 60.0% 32821 29s 2 4 3.00000 1 963 5.00000 3.00000 40.0% 31289 42s 6 4 3.00000 3 138 5.00000 3.00000 40.0% 11044 45s 8 6 3.20000 4 217 5.00000 3.00000 40.0% 12374 54s 10 6 4.00000 5 141 5.00000 3.00000 40.0% 10295 55s 37 17 3.20000 4 253 5.00000 3.00000 40.0% 3616 63s * 59 5 23 4.0000000 3.00000 25.0% 2329 64s Cutting planes: Clique: 11 Explored 67 nodes (162818 simplex iterations) in 64.97 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%