Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:58:55 2012 Optimize a model with 303 rows, 176 columns and 931 nonzeros Presolve time: 0.00s Presolved: 303 rows, 176 columns, 931 nonzeros Variable types: 0 continuous, 176 integer (176 binary) Found heuristic solution: objective 76.0000000 Found heuristic solution: objective 71.0000000 Root relaxation: objective 0.000000e+00, 50 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 25 71.00000 0.00000 100% - 0s H 0 0 67.0000000 0.00000 100% - 0s 0 0 0.84000 0 27 67.00000 0.84000 98.7% - 0s 0 0 0.89295 0 39 67.00000 0.89295 98.7% - 0s 0 0 0.96542 0 40 67.00000 0.96542 98.6% - 0s 0 0 1.00114 0 40 67.00000 1.00114 98.5% - 0s 0 0 1.03685 0 40 67.00000 1.03685 98.5% - 0s 0 0 1.03685 0 40 67.00000 1.03685 98.5% - 0s 0 0 1.03685 0 40 67.00000 1.03685 98.5% - 0s 0 0 1.03685 0 40 67.00000 1.03685 98.5% - 0s H 0 0 66.0000000 1.03685 98.4% - 0s 0 2 1.12093 0 40 66.00000 1.12093 98.3% - 0s H 219 119 64.0000000 18.66667 70.8% 26.1 0s * 285 135 16 63.0000000 20.03896 68.2% 24.7 0s * 412 166 13 61.0000000 26.00000 57.4% 24.8 0s * 903 231 27 60.0000000 31.50000 47.5% 25.3 0s * 1691 254 25 59.0000000 36.57143 38.0% 24.1 1s * 2859 300 26 58.0000000 42.00000 27.6% 22.7 2s Cutting planes: Gomory: 1 Mod-K: 5 Explored 5005 nodes (105821 simplex iterations) in 3.32 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.800000000000e+01, best bound 5.800000000000e+01, gap 0.0%