Build (method = -2) #dp: 1761 Step-3' Graph: 60 vertices and 211 arcs (0.00s) Step-4' Graph: 31 vertices and 153 arcs (0.01s) #V4/#V3 = 0.52 #A4/#A3 = 0.73 Ready! (0.01s) Optimize a model with 99 rows, 154 columns and 405 nonzeros Presolve removed 57 rows and 68 columns Presolve time: 0.00s Presolved: 42 rows, 86 columns, 213 nonzeros Variable types: 0 continuous, 86 integer (5 binary) Found heuristic solution: objective 178.0000000 Found heuristic solution: objective 167.0000000 Found heuristic solution: objective 135.0000000 Optimize a model with 42 rows, 86 columns and 213 nonzeros Presolve removed 1 rows and 1 columns Presolved: 41 rows, 85 columns, 211 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 7.900e+01 Factor NZ : 4.930e+02 Factor Ops : 7.629e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.30600665e+03 -1.16131470e+03 4.41e+02 1.11e-16 4.77e+01 0s 1 4.71109722e+02 -3.41523931e+02 4.14e+01 1.44e-15 6.21e+00 0s 2 1.63310000e+02 5.97530669e+01 1.51e-14 7.33e-15 5.51e-01 0s 3 1.35936862e+02 1.13394002e+02 6.57e-14 7.77e-16 1.20e-01 0s 4 1.22765052e+02 1.19627295e+02 9.77e-15 4.44e-16 1.67e-02 0s 5 1.22124653e+02 1.21852606e+02 4.09e-14 9.99e-16 1.45e-03 0s 6 1.22000116e+02 1.21999483e+02 6.04e-14 7.77e-16 3.37e-06 0s 7 1.22000000e+02 1.22000000e+02 5.40e-12 5.55e-16 3.75e-12 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 1.22000000e+02 Root relaxation: objective 1.220000e+02, 41 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 122.0000000 122.00000 0.0% - 0s Explored 0 nodes (41 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.220000000000e+02, best bound 1.220000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 122 Solution: 3 x [68] 6 x [67] 4 x [66] 2 x [65] 3 x [64] 3 x [63] 5 x [62] 2 x [61] 1 x [60] 6 x [59] 2 x [1, 58] 1 x [57] 3 x [56] 3 x [4, 55] 1 x [5, 54] 1 x [2, 54] 3 x [3, 53] 2 x [6, 52] 5 x [51] 5 x [7, 50] 4 x [6, 49] 2 x [11, 48] 2 x [10, 48] 1 x [12, 47] 2 x [8, 46] 3 x [12, 45] 2 x [15, 44] 4 x [14, 44] 2 x [16, 43] 1 x [17, 42] 1 x [9, 42] 4 x [13, 41] 2 x [19, 40] 2 x [21, 39] 2 x [22, 38] 4 x [23, 37] 3 x [20, 37] 5 x [24, 36] 2 x [19, 35] 1 x [24, 34] 1 x [19, 34] 1 x [18, 33] 1 x [26, 32] 2 x [25, 32] 1 x [27, 31] 1 x [28, 30] 3 x [27, 30] 2 x [29, 29]