Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:23 2012 Optimize a model with 504 rows, 102 columns and 1008 nonzeros Presolve removed 176 rows and 0 columns Presolve time: 0.00s Presolved: 328 rows, 102 columns, 812 nonzeros Variable types: 0 continuous, 102 integer (102 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 3.637500e+01, 186 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 36.37500 0 95 26.00000 36.37500 39.9% - 0s 0 0 35.77477 0 100 26.00000 35.77477 37.6% - 0s 0 0 35.54324 0 97 26.00000 35.54324 36.7% - 0s H 0 0 28.0000000 35.54324 26.9% - 0s 0 0 35.29853 0 99 28.00000 35.29853 26.1% - 0s H 0 0 29.0000000 35.29853 21.7% - 0s H 0 0 30.0000000 35.29853 17.7% - 0s 0 0 35.05208 0 97 30.00000 35.05208 16.8% - 0s 0 0 34.93436 0 101 30.00000 34.93436 16.4% - 0s 0 0 34.82979 0 93 30.00000 34.82979 16.1% - 0s 0 0 34.71792 0 102 30.00000 34.71792 15.7% - 0s 0 0 34.66146 0 100 30.00000 34.66146 15.5% - 0s 0 0 34.62573 0 101 30.00000 34.62573 15.4% - 0s 0 0 34.61955 0 101 30.00000 34.61955 15.4% - 0s 0 0 34.61955 0 100 30.00000 34.61955 15.4% - 0s H 0 0 31.0000000 34.61955 11.7% - 0s 0 2 34.61594 0 99 31.00000 34.61594 11.7% - 0s H 132 0 32.0000000 33.00000 3.12% 27.7 0s Cutting planes: Clique: 4 Zero half: 54 Explored 133 nodes (4446 simplex iterations) in 0.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%