Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:41:58 2012 Optimize a model with 325 rows, 336 columns and 1146 nonzeros Presolve removed 0 rows and 31 columns Presolve time: 0.00s Presolved: 325 rows, 305 columns, 1115 nonzeros Variable types: 0 continuous, 305 integer (304 binary) Found heuristic solution: objective 56.0000000 Root relaxation: objective 0.000000e+00, 196 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 129 56.00000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s H 0 0 37.0000000 0.00000 100% - 0s H 0 0 32.0000000 0.00000 100% - 0s 0 0 0.21320 0 131 32.00000 0.21320 99.3% - 0s H 0 0 31.0000000 0.21320 99.3% - 0s 0 0 0.78913 0 133 31.00000 0.78913 97.5% - 0s H 0 0 30.0000000 0.78913 97.4% - 0s 0 0 0.78913 0 133 30.00000 0.78913 97.4% - 0s H 0 0 27.0000000 0.78913 97.1% - 0s H 0 0 22.0000000 0.78913 96.4% - 0s 0 2 0.78934 0 133 22.00000 0.78934 96.4% - 0s H 27 20 7.0000000 2.50261 64.2% 26.9 0s Cutting planes: Gomory: 3 Explored 84 nodes (2353 simplex iterations) in 0.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%