Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:53:44 2012 Optimize a model with 704 rows, 119 columns and 1408 nonzeros Presolve removed 266 rows and 0 columns Presolve time: 0.00s Presolved: 438 rows, 119 columns, 1091 nonzeros Variable types: 0 continuous, 119 integer (119 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 3.966279e+01, 314 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 39.66279 0 115 26.00000 39.66279 52.5% - 0s H 0 0 28.0000000 39.66279 41.7% - 0s 0 0 39.23587 0 117 28.00000 39.23587 40.1% - 0s H 0 0 29.0000000 39.23587 35.3% - 0s 0 0 38.94705 0 115 29.00000 38.94705 34.3% - 0s 0 0 38.76417 0 114 29.00000 38.76417 33.7% - 0s 0 0 38.65902 0 115 29.00000 38.65902 33.3% - 0s 0 0 38.57427 0 115 29.00000 38.57427 33.0% - 0s 0 0 38.53286 0 115 29.00000 38.53286 32.9% - 0s 0 0 38.45928 0 116 29.00000 38.45928 32.6% - 0s 0 0 38.39023 0 115 29.00000 38.39023 32.4% - 0s 0 0 38.36197 0 116 29.00000 38.36197 32.3% - 0s H 0 0 30.0000000 38.36197 27.9% - 0s 0 0 38.29762 0 117 30.00000 38.29762 27.7% - 0s 0 0 38.25903 0 117 30.00000 38.25903 27.5% - 0s 0 0 38.24456 0 117 30.00000 38.24456 27.5% - 0s 0 0 38.22101 0 117 30.00000 38.22101 27.4% - 0s 0 0 38.17847 0 118 30.00000 38.17847 27.3% - 0s 0 0 38.15818 0 117 30.00000 38.15818 27.2% - 0s 0 0 38.13995 0 118 30.00000 38.13995 27.1% - 0s 0 0 38.13777 0 118 30.00000 38.13777 27.1% - 0s 0 0 38.13777 0 118 30.00000 38.13777 27.1% - 0s 0 2 38.11786 0 118 30.00000 38.11786 27.1% - 0s H 12 12 31.0000000 38.11480 23.0% 50.8 0s H 45 20 32.0000000 37.64619 17.6% 36.3 0s Cutting planes: Clique: 6 Zero half: 50 Explored 1018 nodes (29091 simplex iterations) in 1.15 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%