Build (method = -2) #dp: 615 Step-3' Graph: 12 vertices and 177 arcs (0.00s) Step-4' Graph: 12 vertices and 177 arcs (0.00s) #V4/#V3 = 1.00 #A4/#A3 = 1.00 Ready! (0.00s) Optimize a model with 72 rows, 178 columns and 517 nonzeros Presolve removed 36 rows and 38 columns Presolve time: 0.00s Presolved: 36 rows, 140 columns, 404 nonzeros Variable types: 0 continuous, 140 integer (12 binary) Found heuristic solution: objective 255.0000000 Optimize a model with 36 rows, 140 columns and 404 nonzeros Presolved: 36 rows, 140 columns, 404 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.810e+02 Factor NZ : 5.940e+02 Factor Ops : 1.289e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 9.36370500e+02 -1.38773089e+03 2.77e+02 7.15e-02 2.39e+01 0s 1 3.92028059e+02 -4.49745870e+02 2.69e+01 8.88e-16 4.02e+00 0s 2 2.60234448e+02 4.47553702e+01 1.23e+00 3.89e-15 7.33e-01 0s 3 2.07183361e+02 1.82105324e+02 1.83e-03 9.71e-16 8.26e-02 0s 4 1.94570588e+02 1.92064825e+02 6.84e-05 1.50e-15 8.25e-03 0s 5 1.94008789e+02 1.93986773e+02 4.82e-07 1.20e-15 7.24e-05 0s 6 1.94000000e+02 1.94000000e+02 7.82e-13 1.35e-15 9.03e-11 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 1.94000000e+02 Root relaxation: objective 1.940000e+02, 55 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 194.0000000 194.00000 0.0% - 0s Explored 0 nodes (55 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.940000000000e+02, best bound 1.940000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.01 seconds Objective: 194 Solution: 7 x [45] 8 x [39] 5 x [38] 7 x [30] 4 x [23] 5 x [3] 2 x [54] 2 x [14] 3 x [10, 37] 8 x [41, 51] 4 x [40] 3 x [19, 28] 9 x [6, 29] 3 x [59] 1 x [22, 59] 1 x [43] 2 x [32] 4 x [2, 32] 3 x [31] 2 x [31, 33] 2 x [13, 13, 31] 8 x [27, 35] 9 x [11, 17] 7 x [7] 1 x [7, 17, 29] 9 x [42, 58] 2 x [57] 7 x [34, 56] 7 x [15, 44] 1 x [36, 52] 1 x [36, 42] 4 x [25] 4 x [24, 52] 3 x [18, 20] 1 x [16, 20] 9 x [5, 9] 7 x [4, 60] 1 x [4, 5] 4 x [1] 4 x [21, 55] 6 x [48, 53] 1 x [48, 50] 1 x [26, 49] 3 x [46, 48] 1 x [8, 47] 2 x [21, 26] 5 x [12, 26] 1 x [8, 26]