Build (method = -2) #dp: 74765 Step-3' Graph: 451 vertices and 7896 arcs (0.50s) Step-4' Graph: 377 vertices and 7748 arcs (0.50s) #V4/#V3 = 0.84 #A4/#A3 = 0.98 Ready! (0.51s) Optimize a model with 457 rows, 7749 columns and 22502 nonzeros Presolve removed 9 rows and 20 columns Presolve time: 0.11s Presolved: 448 rows, 7729 columns, 22464 nonzeros Variable types: 0 continuous, 7729 integer (428 binary) Found heuristic solution: objective 4154.0000000 Found heuristic solution: objective 3911.0000000 Optimize a model with 448 rows, 7729 columns and 22464 nonzeros Presolved: 448 rows, 7729 columns, 22464 nonzeros Root barrier log... Ordering time: 0.01s Barrier statistics: AA' NZ : 1.525e+04 Factor NZ : 3.835e+04 (roughly 4 MBytes of memory) Factor Ops : 4.137e+06 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.24940409e+05 -1.72154549e+06 1.60e+06 1.55e-01 2.29e+03 0s 1 8.29245620e+04 -6.05493110e+05 2.68e+05 6.66e-16 3.94e+02 0s 2 2.03208861e+04 -2.52192560e+05 4.51e+04 1.55e-15 7.34e+01 0s 3 7.89824606e+03 -1.11270099e+05 6.24e+03 2.66e-15 1.42e+01 0s 4 5.14507336e+03 -3.32802712e+04 1.33e+03 2.33e-15 3.52e+00 0s 5 4.22795064e+03 -1.79809341e+04 5.29e+02 1.78e-15 1.76e+00 0s 6 3.87394372e+03 -1.24723583e+04 3.57e+02 9.99e-16 1.24e+00 0s 7 2.83534528e+03 -7.93479651e+03 1.49e+02 4.44e-16 7.62e-01 0s 8 2.32610967e+03 -6.07411534e+03 1.11e+02 4.44e-16 5.92e-01 0s 9 1.79706679e+03 -3.17894135e+03 7.74e+01 3.33e-16 3.52e-01 0s 10 1.05116048e+03 -1.29379958e+03 3.04e+01 2.81e-16 1.62e-01 0s 11 8.64907884e+02 -8.02988932e+01 1.71e+01 2.48e-16 6.51e-02 0s 12 8.06236119e+02 2.92121141e+02 1.06e+01 2.22e-16 3.51e-02 0s 13 7.75419628e+02 4.77719404e+02 8.03e+00 2.42e-16 2.03e-02 0s 14 7.47992146e+02 6.35358248e+02 5.17e+00 3.33e-16 7.72e-03 0s 15 7.17620985e+02 6.93037047e+02 1.81e+00 3.33e-16 1.68e-03 0s 16 7.05620408e+02 7.00121466e+02 2.12e-01 3.12e-16 3.62e-04 0s 17 7.02356012e+02 7.02155499e+02 1.25e-03 3.18e-16 1.29e-05 0s 18 7.02333360e+02 7.02333156e+02 3.38e-11 3.37e-16 1.32e-08 0s 19 7.02333333e+02 7.02333333e+02 3.78e-12 3.61e-16 1.32e-11 0s Barrier solved model in 19 iterations and 0.14 seconds Optimal objective 7.02333333e+02 Root relaxation: objective 7.023333e+02, 6892 iterations, 0.27 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 702.33333 0 125 3911.00000 702.33333 82.0% - 1s H 0 0 704.0000000 702.33333 0.24% - 1s H 0 0 703.0000000 702.33333 0.09% - 1s Explored 0 nodes (11966 simplex iterations) in 1.73 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 7.030000000000e+02, best bound 7.030000000000e+02, gap 0.0% Preprocessing time: 0.54 seconds Gurobi run time: 1.73 seconds Total run time: 2.26 seconds Objective: 703 Solution: 26 x [8, 37, 51, 51, 63, 73] 19 x [1, 21, 34, 41, 46, 73] 35 x [27, 31, 50, 61, 72, 72] 39 x [19, 20, 27, 60, 61, 65] 5 x [21, 27, 28, 31, 50, 72] 12 x [13, 27, 32, 38, 76, 80] 1 x [5, 7, 32, 51, 63, 76] 1 x [3, 12, 14, 16, 61, 70] 1 x [2, 9, 16, 55, 61, 62] 2 x [2, 9, 19, 61, 68, 69] 2 x [19, 26, 37, 54, 61, 68] 2 x [16, 37, 47, 54, 60, 61] 1 x [19, 37, 54, 61, 68] 9 x [7, 20, 39, 54, 59, 61] 3 x [7, 20, 39, 59, 60, 61] 2 x [9, 16, 32, 36, 41, 70] 1 x [36, 47, 50, 70, 71, 79] 4 x [11, 19, 36, 47, 70, 79] 1 x [1, 16, 20, 36, 43, 62] 5 x [2, 9, 10, 36, 42, 55] 4 x [2, 9, 11, 22, 36, 46] 27 x [8, 26, 32, 36, 37, 54] 2 x [16, 25, 35, 36, 43, 59] 1 x [31, 32, 38, 76, 76, 80] 3 x [1, 16, 31, 32, 41, 43] 22 x [1, 11, 20, 31, 46, 77] 4 x [14, 31, 45, 54, 58, 76] 5 x [12, 14, 16, 31, 31, 66] 11 x [30, 44, 50, 68, 70, 72] 17 x [30, 32, 39, 44, 68, 70] 13 x [30, 32, 44, 70, 76, 76] 9 x [19, 26, 30, 47, 68, 78] 4 x [16, 25, 30, 35, 59, 78] 1 x [16, 32, 33, 43, 53, 54] 24 x [17, 24, 33, 43, 53, 62] 2 x [14, 24, 33, 46, 53, 53] 13 x [28, 33, 39, 59, 66, 74] 32 x [28, 33, 39, 59, 59, 66] 11 x [2, 17, 24, 42, 49, 57] 4 x [49, 54, 57, 58, 66, 76] 12 x [7, 18, 35, 46, 52, 57] 2 x [18, 34, 35, 46, 52, 57] 2 x [2, 6, 32, 53, 64, 76] 1 x [7, 39, 53, 54, 64, 74] 6 x [14, 21, 53, 53, 64, 72] 15 x [16, 26, 28, 43, 58, 64] 9 x [13, 13, 15, 44, 50, 67] 10 x [12, 14, 29, 38, 44, 76] 1 x [7, 39, 44, 53, 54, 74] 4 x [21, 34, 44, 46, 53, 54] 15 x [6, 44, 53, 53, 76, 76] 45 x [15, 15, 17, 24, 43, 62] 24 x [18, 34, 46, 47, 49, 52] 46 x [2, 10, 29, 42, 69, 75] 10 x [9, 16, 32, 75, 78, 78] 18 x [16, 20, 37, 62, 75, 75] 6 x [9, 47, 52, 53, 60, 76] 2 x [1, 17, 24, 48, 51, 62] 15 x [4, 8, 26, 47, 47, 78] 58 x [9, 23, 35, 40, 56, 77] 1 x [43, 47, 47, 66] 3 x [8, 43, 47, 47, 54, 66] 1 x [8, 43, 47, 47, 66] 1 x [18, 34, 46, 47, 56, 77] 5 x [8, 47, 54, 56, 59, 77] 11 x [4, 4, 4, 4, 8, 26]