Build (method = -2) #dp: 3325 Step-3' Graph: 77 vertices and 1268 arcs (0.01s) Step-4' Graph: 74 vertices and 1262 arcs (0.01s) #V4/#V3 = 0.96 #A4/#A3 = 1.00 Ready! (0.01s) Optimize a model with 151 rows, 1263 columns and 3645 nonzeros Presolve removed 56 rows and 125 columns Presolve time: 0.03s Presolved: 95 rows, 1138 columns, 3181 nonzeros Variable types: 0 continuous, 1138 integer (229 binary) Found heuristic solution: objective 173.0000000 Found heuristic solution: objective 164.0000000 Optimize a model with 95 rows, 1138 columns and 3181 nonzeros Presolve removed 0 rows and 4 columns Presolved: 95 rows, 1134 columns, 3175 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.424e+03 Factor NZ : 2.753e+03 Factor Ops : 1.028e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.04063680e+03 -5.95446746e+03 1.02e+04 1.69e-01 2.87e+01 0s 1 6.45677356e+02 -2.79323247e+03 1.63e+03 8.29e-03 5.26e+00 0s 2 2.41518594e+02 -1.05378750e+03 1.61e+02 7.77e-16 8.63e-01 0s 3 1.72132100e+02 -1.03596596e+02 1.81e+01 6.66e-16 1.39e-01 0s 4 1.40075935e+02 4.17134680e+00 5.24e+00 2.71e-16 6.35e-02 0s 5 1.22009997e+02 6.19914690e+01 1.92e+00 2.84e-16 2.74e-02 0s 6 1.15021742e+02 7.86627407e+01 9.56e-01 2.27e-16 1.64e-02 0s 7 1.08558400e+02 9.79866147e+01 2.61e-01 3.35e-16 4.74e-03 0s 8 1.06977801e+02 1.05449553e+02 5.05e-02 2.95e-16 6.86e-04 0s 9 1.06690937e+02 1.06236952e+02 6.88e-03 2.22e-16 2.00e-04 0s 10 1.06505322e+02 1.06484909e+02 8.68e-14 3.01e-16 8.89e-06 0s 11 1.06500001e+02 1.06499998e+02 1.71e-13 3.33e-16 9.72e-10 0s 12 1.06500000e+02 1.06500000e+02 3.28e-12 3.33e-16 9.72e-13 0s Barrier solved model in 12 iterations and 0.01 seconds Optimal objective 1.06500000e+02 Root relaxation: objective 1.065000e+02, 327 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 106.50000 0 2 164.00000 106.50000 35.1% - 0s H 0 0 107.0000000 106.50000 0.47% - 0s Explored 0 nodes (491 simplex iterations) in 0.06 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.070000000000e+02, best bound 1.070000000000e+02, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.06 seconds Total run time: 0.08 seconds Objective: 107 Solution: 1 x [77] 1 x [1, 77] 1 x [2, 76] 1 x [75] 4 x [74] 3 x [4, 73] 3 x [5, 72] 4 x [71] 2 x [70] 1 x [69] 2 x [6, 69] 4 x [68] 1 x [7, 68] 1 x [8, 67] 1 x [9, 66] 1 x [9, 65] 2 x [9, 64] 1 x [12, 63] 2 x [13, 62] 1 x [14, 61] 1 x [12, 61] 3 x [13, 60] 2 x [16, 59] 2 x [17, 58] 1 x [17, 57] 1 x [16, 57] 4 x [15, 57] 3 x [19, 56] 2 x [18, 56] 1 x [15, 56] 1 x [20, 55] 1 x [21, 54] 1 x [20, 54] 4 x [21, 53] 2 x [10, 52] 2 x [24, 51] 1 x [24, 50] 1 x [11, 49] 2 x [8, 49] 2 x [26, 48] 2 x [29, 47] 1 x [25, 47] 1 x [22, 47] 1 x [30, 46] 2 x [27, 46] 1 x [24, 46] 2 x [31, 45] 1 x [28, 45] 2 x [23, 45] 3 x [3, 9, 45] 1 x [32, 44] 1 x [33, 43] 1 x [33, 42] 1 x [34, 41] 2 x [33, 41] 1 x [35, 40] 1 x [37, 39] 2 x [36, 39] 1 x [35, 39] 2 x [33, 39] 1 x [38] 1 x [38, 38] 1 x [32, 37] 1 x [9, 11, 34]