Build (method = -2) #dp: 196 Step-3' Graph: 34 vertices and 92 arcs (0.00s) Step-4' Graph: 6 vertices and 36 arcs (0.00s) #V4/#V3 = 0.18 #A4/#A3 = 0.39 Ready! (0.00s) Optimize a model with 14 rows, 37 columns and 106 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.00s Presolved: 12 rows, 35 columns, 102 nonzeros Variable types: 0 continuous, 35 integer (0 binary) Found heuristic solution: objective 278.0000000 Found heuristic solution: objective 249.0000000 Optimize a model with 12 rows, 35 columns and 102 nonzeros Presolved: 12 rows, 35 columns, 102 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.700e+01 Factor NZ : 7.800e+01 Factor Ops : 6.500e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 7.33607364e+02 -1.18763010e+03 1.75e+02 0.00e+00 6.35e+01 0s 1 1.92351832e+02 -3.84122630e+02 6.99e+00 2.22e-16 8.61e+00 0s 2 1.08960639e+02 6.76408146e+00 7.93e-01 9.99e-16 1.33e+00 0s 3 7.23519924e+01 4.67943383e+01 2.60e-02 2.22e-16 3.28e-01 0s 4 6.98334762e+01 6.89254056e+01 2.70e-14 1.20e-16 1.16e-02 0s 5 6.97501061e+01 6.97496118e+01 5.81e-14 2.22e-16 6.34e-06 0s 6 6.97500000e+01 6.97500000e+01 2.48e-14 2.22e-16 6.34e-12 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 6.97500000e+01 Root relaxation: objective 6.975000e+01, 28 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 69.75000 0 5 249.00000 69.75000 72.0% - 0s H 0 0 70.0000000 69.75000 0.36% - 0s Explored 0 nodes (32 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 7.000000000000e+01, best bound 7.000000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 70 Solution: 30 x [1, 2, 2, 2] 6 x [2, 3, 4, 6] 4 x [2, 4, 7, 8] 23 x [2, 2, 5, 6] 1 x [2, 2, 6, 6] 5 x [2, 2, 4, 8] 1 x [4, 6, 8]