Build (method = -2) #dp: 1321 Step-3' Graph: 259 vertices and 770 arcs (0.01s) Step-4' Graph: 78 vertices and 408 arcs (0.01s) #V4/#V3 = 0.30 #A4/#A3 = 0.53 Ready! (0.01s) Optimize a model with 138 rows, 409 columns and 1075 nonzeros Presolve removed 45 rows and 65 columns Presolve time: 0.00s Presolved: 93 rows, 344 columns, 909 nonzeros Variable types: 0 continuous, 344 integer (0 binary) Found heuristic solution: objective 2778.0000000 Found heuristic solution: objective 2458.0000000 Optimize a model with 93 rows, 344 columns and 909 nonzeros Presolved: 93 rows, 344 columns, 909 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.190e+02 Factor NZ : 1.801e+03 Factor Ops : 4.012e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.83525432e+04 -3.38680188e+04 9.55e+04 2.22e-16 4.53e+02 0s 1 5.88033499e+03 -1.33332163e+04 1.21e+04 6.66e-16 6.91e+01 0s 2 3.00806107e+03 -2.29290841e+03 1.02e+03 3.55e-15 1.00e+01 0s 3 2.43637444e+03 1.52828169e+02 3.55e+01 8.88e-16 3.28e+00 0s 4 2.23336696e+03 1.46401537e+03 2.48e+00 4.44e-16 1.09e+00 0s 5 2.15293608e+03 1.92730866e+03 8.66e-01 4.20e-16 3.19e-01 0s 6 2.12986434e+03 2.10261564e+03 2.22e-01 3.33e-16 3.86e-02 0s 7 2.12303560e+03 2.12291173e+03 4.92e-04 3.33e-16 1.75e-04 0s 8 2.12300004e+03 2.12299991e+03 1.51e-12 3.18e-16 1.75e-07 0s 9 2.12300000e+03 2.12300000e+03 2.03e-12 3.33e-16 1.80e-13 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 2.12300000e+03 Root relaxation: objective 2.123000e+03, 187 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2123.00000 0 9 2458.00000 2123.00000 13.6% - 0s H 0 0 2124.0000000 2123.00000 0.05% - 0s H 0 0 2123.0000000 2123.00000 0.0% - 0s Explored 0 nodes (219 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.123000000000e+03, best bound 2.123000000000e+03, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.03 seconds Objective: 2123 Solution: 25 x [19] 65 x [28] 78 x [52] 23 x [55] 60 x [7] 49 x [58] 46 x [16] 19 x [46] 86 x [13] 78 x [48] 83 x [3] 57 x [18] 68 x [9] 80 x [36] 15 x [1] 5 x [1, 47] 2 x [1, 41] 16 x [59] 76 x [2] 72 x [30] 17 x [42] 3 x [53] 24 x [26] 59 x [20] 35 x [23] 33 x [54] 63 x [43] 25 x [22, 43] 2 x [43, 47] 56 x [5] 2 x [5, 57] 2 x [6] 7 x [6, 34] 48 x [6, 45] 2 x [6, 45, 50] 58 x [14] 8 x [11] 82 x [10, 11] 60 x [38] 7 x [38, 44] 7 x [8] 10 x [8, 44, 49] 39 x [8, 44] 3 x [51] 43 x [51, 60] 11 x [44, 51] 4 x [31, 60] 29 x [15, 40] 6 x [15, 27, 60] 25 x [25, 37] 2 x [25] 27 x [4, 25] 4 x [24, 25] 8 x [24, 33] 22 x [24, 27, 33] 7 x [56] 54 x [40, 50, 56] 3 x [56, 60] 1 x [29] 12 x [29, 40] 24 x [29, 49] 10 x [29, 49, 60] 1 x [29, 60] 12 x [12, 29] 3 x [4, 39] 43 x [4, 21, 35] 17 x [39] 20 x [24, 27, 39] 25 x [39, 49] 6 x [32, 39] 16 x [35] 6 x [24, 35] 3 x [24, 27, 35] 24 x [17, 24, 35]