Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:06 2012 Optimize a model with 462 rows, 95 columns and 924 nonzeros Presolve removed 156 rows and 0 columns Presolve time: 0.00s Presolved: 306 rows, 95 columns, 746 nonzeros Variable types: 0 continuous, 95 integer (95 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 3.407143e+01, 195 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 34.07143 0 92 26.00000 34.07143 31.0% - 0s 0 0 33.23901 0 92 26.00000 33.23901 27.8% - 0s 0 0 32.98805 0 94 26.00000 32.98805 26.9% - 0s 0 0 32.78809 0 94 26.00000 32.78809 26.1% - 0s 0 0 32.58512 0 95 26.00000 32.58512 25.3% - 0s 0 0 32.48700 0 94 26.00000 32.48700 24.9% - 0s 0 0 32.44736 0 93 26.00000 32.44736 24.8% - 0s 0 0 32.41535 0 95 26.00000 32.41535 24.7% - 0s 0 0 32.39051 0 94 26.00000 32.39051 24.6% - 0s 0 0 32.37673 0 94 26.00000 32.37673 24.5% - 0s 0 0 32.37673 0 94 26.00000 32.37673 24.5% - 0s 0 2 32.37531 0 94 26.00000 32.37531 24.5% - 0s H 6 6 27.0000000 32.37023 19.9% 38.7 0s * 7 7 6 28.0000000 32.37023 15.6% 36.1 0s Cutting planes: Gomory: 1 Clique: 1 Zero half: 54 Explored 298 nodes (6652 simplex iterations) in 0.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.800000000000e+01, best bound 2.800000000000e+01, gap 0.0%