Gurobi 5.0.1 (linux64) logging started Fri Nov 16 08:54:37 2012 Optimize a model with 14365 rows, 4290 columns and 47125 nonzeros Presolve time: 0.11s Presolved: 14365 rows, 4290 columns, 47312 nonzeros Variable types: 0 continuous, 4290 integer (4290 binary) Found heuristic solution: objective 42.0000000 Root relaxation: objective 2.000000e+00, 4111 iterations, 0.15 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 130 42.00000 2.00000 95.2% - 0s H 0 0 14.0000000 2.00000 85.7% - 0s H 0 0 5.0000000 2.00000 60.0% - 0s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 2s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 8s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 14s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 21s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 29s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 35s 0 2 2.00000 0 130 5.00000 2.00000 60.0% - 52s 1 3 3.00000 1 612 5.00000 2.00000 60.0% 29354 62s 2 4 3.00000 1 523 5.00000 3.00000 40.0% 40419 83s 16 4 infeasible 2 5.00000 3.00000 40.0% 5582 86s H 27 8 4.0000000 3.00000 25.0% 3496 88s 45 4 cutoff 4 4.00000 3.00000 25.0% 2241 90s 71 2 cutoff 5 4.00000 3.00000 25.0% 1769 95s 78 3 cutoff 9 4.00000 3.00000 25.0% 1942 100s Cutting planes: Clique: 128 Zero half: 9 Explored 84 nodes (240752 simplex iterations) in 101.71 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%