Gurobi 5.0.1 (linux64) logging started Fri Nov 16 11:26:12 2012 Optimize a model with 19040 rows, 4970 columns and 61810 nonzeros Presolve time: 0.15s Presolved: 19040 rows, 4970 columns, 61930 nonzeros Variable types: 0 continuous, 4970 integer (4970 binary) Found heuristic solution: objective 40.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 17023 1.9797050e+00 5.270159e+02 0.000000e+00 5s 19330 2.0000000e+00 0.000000e+00 0.000000e+00 6s Root relaxation: objective 2.000000e+00, 19330 iterations, 6.32 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 140 40.00000 2.00000 95.0% - 6s H 0 0 14.0000000 2.00000 85.7% - 6s H 0 0 5.0000000 2.00000 60.0% - 6s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 7s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 7s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 8s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 8s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 9s 0 0 2.00000 0 140 5.00000 2.00000 60.0% - 10s 0 2 2.00000 0 140 5.00000 2.00000 60.0% - 12s 1 3 2.75000 1 581 5.00000 2.01694 59.7% 44908 28s 2 4 2.50000 1 307 5.00000 2.50000 50.0% 39087 41s 19 12 3.00000 3 136 5.00000 2.50000 50.0% 5123 45s 53 22 3.33333 6 262 5.00000 3.00000 40.0% 2385 50s 82 25 3.66667 9 388 5.00000 3.00000 40.0% 1810 55s 94 25 4.00000 9 118 5.00000 3.00000 40.0% 1825 60s 105 26 3.75000 7 261 5.00000 3.00000 40.0% 1844 65s * 123 5 15 4.0000000 3.00000 25.0% 1656 69s 127 1 cutoff 5 4.00000 3.00000 25.0% 1688 71s Cutting planes: Clique: 24 Explored 139 nodes (235979 simplex iterations) in 71.72 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%