Build (method = -2) #dp: 2552 Step-3' Graph: 66 vertices and 268 arcs (0.01s) Step-4' Graph: 19 vertices and 174 arcs (0.01s) #V4/#V3 = 0.29 #A4/#A3 = 0.65 Ready! (0.01s) Optimize a model with 99 rows, 175 columns and 492 nonzeros Presolve removed 21 rows and 21 columns Presolve time: 0.00s Presolved: 78 rows, 154 columns, 430 nonzeros Variable types: 0 continuous, 154 integer (1 binary) Found heuristic solution: objective 5497.0000000 Found heuristic solution: objective 3030.0000000 Optimize a model with 78 rows, 154 columns and 430 nonzeros Presolved: 78 rows, 154 columns, 430 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.530e+02 Factor NZ : 1.148e+03 Factor Ops : 2.263e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 8.98470997e+04 -6.82744494e+04 9.38e+03 1.11e-16 1.35e+03 0s 1 1.93047491e+04 -1.91174090e+04 1.03e+03 8.88e-16 1.84e+02 0s 2 5.03656902e+03 -2.74125161e+03 3.25e+01 5.11e-15 2.25e+01 0s 3 3.21561482e+03 1.49661638e+03 6.94e-01 2.00e-15 4.66e+00 0s 4 2.80127639e+03 2.52515042e+03 3.51e-02 8.88e-16 7.48e-01 0s 5 2.75475259e+03 2.74988085e+03 2.19e-03 8.88e-16 1.32e-02 0s 6 2.75150011e+03 2.75149993e+03 7.91e-08 9.99e-16 5.08e-07 0s 7 2.75150000e+03 2.75150000e+03 3.68e-12 9.99e-16 5.14e-13 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 2.75150000e+03 Root relaxation: objective 2.751500e+03, 90 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2751.50000 0 2 3030.00000 2751.50000 9.19% - 0s H 0 0 2752.0000000 2751.50000 0.02% - 0s Explored 0 nodes (90 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.752000000000e+03, best bound 2.752000000000e+03, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.03 seconds Objective: 2752 Solution: 79 x [14, 38] 41 x [31, 75] 56 x [33, 71] 3 x [35, 61] 1 x [35, 67] 17 x [33, 35] 22 x [31, 63] 6 x [51, 74] 3 x [51, 77] 80 x [42, 66] 1 x [34, 68] 28 x [21, 68] 3 x [58, 68] 39 x [11, 34] 94 x [7, 36] 2 x [36, 60] 1 x [39, 56] 22 x [12, 56] 1 x [8, 56] 9 x [54, 56] 4 x [31, 56] 1 x [5, 49] 74 x [32, 49] 44 x [21, 69] 48 x [25, 44] 2 x [46, 57] 14 x [9, 57] 3 x [23, 57] 9 x [55, 57] 91 x [27, 40] 96 x [16, 53] 93 x [22, 46] 81 x [6, 73] 2 x [45, 47] 1 x [37, 45] 74 x [45, 78] 15 x [6, 30] 12 x [30, 72] 47 x [26, 30] 91 x [60, 79] 8 x [10, 72] 94 x [28, 47] 87 x [24, 37] 1 x [37, 50] 76 x [48, 50] 58 x [10, 54] 99 x [2, 15] 77 x [13, 61] 79 x [5, 41] 87 x [17, 80] 2 x [16, 76] 12 x [70, 76] 5 x [65, 76] 1 x [60, 76] 1 x [27] 6 x [27, 66] 97 x [52, 58] 94 x [1, 43] 70 x [4, 8] 99 x [29, 39] 79 x [19, 65] 1 x [17, 18] 81 x [55, 59] 88 x [20, 67] 69 x [3, 64] 71 x [62, 77]