Build (method = -2) #dp: 189 Step-3' Graph: 28 vertices and 110 arcs (0.00s) Step-4' Graph: 15 vertices and 84 arcs (0.00s) #V4/#V3 = 0.54 #A4/#A3 = 0.76 Ready! (0.00s) Optimize a model with 35 rows, 85 columns and 232 nonzeros Presolve removed 28 rows and 69 columns Presolve time: 0.00s Presolved: 7 rows, 16 columns, 43 nonzeros Variable types: 0 continuous, 16 integer (0 binary) Found heuristic solution: objective 168.0000000 Found heuristic solution: objective 162.0000000 Optimize a model with 7 rows, 16 columns and 43 nonzeros Presolved: 7 rows, 16 columns, 43 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.600e+01 Factor NZ : 2.800e+01 Factor Ops : 1.400e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.77528517e+02 1.04376352e+02 2.76e+01 5.55e-17 3.68e+00 0s 1 1.63294434e+02 1.46800299e+02 3.55e-15 1.67e-16 4.77e-01 0s 2 1.57240365e+02 1.55231634e+02 3.55e-15 1.25e-16 5.74e-02 0s 3 1.57059136e+02 1.56955032e+02 3.55e-15 1.36e-16 2.97e-03 0s 4 1.57000061e+02 1.56999957e+02 1.07e-14 1.11e-16 2.98e-06 0s 5 1.57000000e+02 1.57000000e+02 1.78e-15 9.45e-17 2.98e-12 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 1.57000000e+02 Root relaxation: objective 1.570000e+02, 10 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 157.0000000 157.00000 0.0% - 0s Explored 0 nodes (10 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.570000000000e+02, best bound 1.570000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 157 Solution: 11 x [20] 10 x [9] 14 x [14] 22 x [10] 12 x [17] 21 x [5] 24 x [3] 9 x [18] 1 x [2, 18] 2 x [12, 18] 2 x [18, 19] 1 x [7, 18] 9 x [7, 7, 18] 6 x [11, 16] 1 x [11, 13] 2 x [1, 4] 6 x [4, 6] 1 x [1, 8] 1 x [8, 15] 2 x [1, 15]