Build (method = -2) #dp: 28146 Step-3' Graph: 220 vertices and 1871 arcs (0.15s) Step-4' Graph: 106 vertices and 1643 arcs (0.15s) #V4/#V3 = 0.48 #A4/#A3 = 0.88 Ready! (0.15s) Optimize a model with 186 rows, 1644 columns and 4727 nonzeros Presolve removed 3 rows and 5 columns Presolve time: 0.01s Presolved: 183 rows, 1639 columns, 4717 nonzeros Variable types: 0 continuous, 1639 integer (8 binary) Found heuristic solution: objective 3608.0000000 Found heuristic solution: objective 2930.0000000 Optimize a model with 183 rows, 1639 columns and 4717 nonzeros Presolved: 183 rows, 1639 columns, 4717 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.992e+03 Factor NZ : 6.052e+03 Factor Ops : 2.811e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.54184794e+05 -7.12085702e+05 2.59e+05 1.32e-01 2.28e+03 0s 1 6.26206308e+04 -1.34197245e+05 4.30e+04 1.11e-15 3.69e+02 0s 2 1.04860577e+04 -5.14642006e+04 5.01e+03 2.22e-15 5.27e+01 0s 3 3.55085457e+03 -1.74708507e+04 4.18e+02 7.99e-15 8.44e+00 0s 4 2.23141867e+03 -4.26446467e+03 4.72e+01 3.66e-15 2.08e+00 0s 5 1.72120807e+03 -1.30487084e+03 2.73e+01 1.78e-15 9.60e-01 0s 6 1.23115500e+03 -1.52784046e+02 1.33e+01 6.90e-16 4.33e-01 0s 7 1.04522842e+03 4.73047023e+02 7.08e+00 6.80e-16 1.77e-01 0s 8 9.67150905e+02 7.77318022e+02 2.60e+00 6.22e-16 5.76e-02 0s 9 9.39696941e+02 9.03656867e+02 9.79e-01 6.93e-16 1.08e-02 0s 10 9.24633895e+02 9.23879162e+02 6.56e-12 6.66e-16 2.25e-04 0s 11 9.24500151e+02 9.24499307e+02 1.09e-11 5.90e-16 2.51e-07 0s 12 9.24500000e+02 9.24499999e+02 9.63e-12 6.97e-16 2.51e-10 0s Barrier solved model in 12 iterations and 0.02 seconds Optimal objective 9.24500000e+02 Root relaxation: objective 9.245000e+02, 1402 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 924.50000 0 30 2930.00000 924.50000 68.4% - 0s H 0 0 930.0000000 924.50000 0.59% - 0s H 0 0 926.0000000 924.50000 0.16% - 0s H 0 0 925.0000000 924.50000 0.05% - 0s Explored 0 nodes (1631 simplex iterations) in 0.12 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 9.250000000000e+02, best bound 9.250000000000e+02, gap 0.0% Preprocessing time: 0.16 seconds Gurobi run time: 0.12 seconds Total run time: 0.28 seconds Objective: 925 Solution: 27 x [12, 37, 60, 76] 49 x [3, 12, 28, 48] 1 x [11, 12, 17, 62] 13 x [6, 36, 44, 49] 2 x [13, 36, 44, 49] 71 x [23, 44, 54, 77] 6 x [22, 24, 44, 53] 2 x [2, 44, 44, 75] 13 x [28, 65, 70, 80] 2 x [15, 25, 65, 80] 2 x [14, 26, 51, 65] 15 x [8, 20, 65, 65] 14 x [27, 52, 61, 77] 1 x [52, 61, 72, 77] 1 x [52, 61, 77] 3 x [14, 52, 70, 77] 44 x [24, 37, 42, 53] 47 x [14, 33, 53, 70] 2 x [14, 42, 52, 70] 10 x [22, 23, 24, 59] 14 x [9, 24, 34, 40] 1 x [14, 24, 70] 20 x [43, 45, 69, 74] 1 x [21, 29, 69, 71] 3 x [9, 28, 29, 40] 3 x [34, 40, 52, 72] 33 x [21, 36, 41, 51] 5 x [38, 41, 47, 54] 3 x [22, 41, 43, 78] 28 x [38, 39, 73, 75] 12 x [33, 55, 58, 76] 7 x [17, 25, 58, 76] 2 x [4, 8, 56, 58] 57 x [1, 11, 58, 67] 8 x [10, 21, 30, 38] 49 x [10, 21, 68, 72] 45 x [19, 31, 52, 72] 17 x [15, 25, 36, 79] 74 x [15, 29, 50, 56] 15 x [19, 25, 35, 78] 83 x [35, 46, 49, 55] 10 x [3, 22, 32, 57] 3 x [16, 22, 63, 67] 1 x [37, 63, 66, 67] 32 x [4, 5, 22, 63] 64 x [7, 18, 34, 57] 6 x [3, 22, 64, 71] 2 x [7, 20, 64, 79] 2 x [7, 22, 47, 64]