Gurobi 5.0.1 (linux64) logging started Fri Nov 16 10:43:42 2012 Optimize a model with 17319 rows, 4830 columns and 56511 nonzeros Presolve time: 0.13s Presolved: 17319 rows, 4830 columns, 56638 nonzeros Variable types: 0 continuous, 4830 integer (4830 binary) Found heuristic solution: objective 44.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 17076 1.9963968e+00 7.198955e+02 0.000000e+00 5s 17535 2.0000000e+00 0.000000e+00 0.000000e+00 5s Root relaxation: objective 2.000000e+00, 17535 iterations, 5.29 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 138 44.00000 2.00000 95.5% - 5s H 0 0 14.0000000 2.00000 85.7% - 5s H 0 0 5.0000000 2.00000 60.0% - 5s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 6s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 7s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 8s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 8s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 9s 0 0 2.00000 0 138 5.00000 2.00000 60.0% - 9s 0 2 2.00000 0 138 5.00000 2.00000 60.0% - 9s 1 3 3.00000 1 128 5.00000 2.00009 60.0% 14099 15s 2 4 3.00000 1 521 5.00000 3.00000 40.0% 16572 22s 4 4 3.09677 2 476 5.00000 3.00000 40.0% 16320 32s 23 12 3.00000 2 208 5.00000 3.00000 40.0% 3187 35s 25 14 4.00000 4 134 5.00000 3.00000 40.0% 3235 41s 27 15 3.09091 5 197 5.00000 3.00000 40.0% 3491 45s * 69 6 20 4.0000000 4.00000 0.0% 1472 47s Cutting planes: Clique: 10 Explored 70 nodes (120014 simplex iterations) in 47.97 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%