Build (method = -2) #dp: 7086 Step-3' Graph: 114 vertices and 2960 arcs (0.03s) Step-4' Graph: 112 vertices and 2956 arcs (0.03s) #V4/#V3 = 0.98 #A4/#A3 = 1.00 Ready! (0.03s) Optimize a model with 193 rows, 2957 columns and 8657 nonzeros Presolve removed 27 rows and 27 columns Presolve time: 0.02s Presolved: 166 rows, 2930 columns, 8578 nonzeros Variable types: 0 continuous, 2930 integer (0 binary) Found heuristic solution: objective 904.0000000 Found heuristic solution: objective 786.0000000 Optimize a model with 166 rows, 2930 columns and 8578 nonzeros Presolved: 166 rows, 2930 columns, 8578 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.306e+03 Factor NZ : 8.557e+03 (roughly 1 MByte of memory) Factor Ops : 5.884e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.73347536e+04 -9.36317634e+04 2.02e+05 2.22e-16 1.46e+02 0s 1 5.69445956e+03 -3.37204064e+04 4.03e+04 7.77e-16 3.08e+01 0s 2 1.44037783e+03 -1.40949547e+04 3.88e+03 4.77e-15 4.65e+00 0s 3 9.87474608e+02 -2.83487440e+03 1.70e+02 5.11e-15 7.00e-01 0s 4 8.14611319e+02 -1.32915897e+03 8.54e+00 2.33e-15 3.64e-01 0s 5 6.94406448e+02 -4.29615676e+02 5.62e+00 9.99e-16 1.91e-01 0s 6 4.94211779e+02 -3.46095463e+01 2.24e+00 6.28e-16 8.97e-02 0s 7 4.49771181e+02 1.58142273e+02 1.40e+00 5.55e-16 4.95e-02 0s 8 4.33138631e+02 2.46157236e+02 8.26e-01 7.07e-16 3.17e-02 0s 9 4.15653227e+02 3.08698835e+02 4.08e-01 5.98e-16 1.81e-02 0s 10 4.03817438e+02 3.62500290e+02 5.92e-02 5.55e-16 6.99e-03 0s 11 3.99834721e+02 3.87372163e+02 1.04e-02 5.48e-16 2.11e-03 0s 12 3.98809595e+02 3.94008128e+02 3.85e-03 6.43e-16 8.12e-04 0s 13 3.98505661e+02 3.97246091e+02 2.08e-03 7.15e-16 2.13e-04 0s 14 3.98209263e+02 3.98154304e+02 7.95e-05 4.50e-16 9.29e-06 0s 15 3.98193335e+02 3.98193324e+02 7.13e-09 6.46e-16 1.88e-09 0s 16 3.98193333e+02 3.98193333e+02 2.33e-12 6.85e-16 2.01e-15 0s Barrier solved model in 16 iterations and 0.04 seconds Optimal objective 3.98193333e+02 Root relaxation: objective 3.981933e+02, 1648 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 398.19333 0 54 786.00000 398.19333 49.3% - 0s H 0 0 399.0000000 398.19333 0.20% - 0s Explored 0 nodes (2929 simplex iterations) in 0.25 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.990000000000e+02, best bound 3.990000000000e+02, gap 0.0% Preprocessing time: 0.05 seconds Gurobi run time: 0.25 seconds Total run time: 0.30 seconds Objective: 399 Solution: 6 x [31, 81] 12 x [32, 80] 12 x [33, 79] 10 x [34, 78] 2 x [4, 11, 78] 10 x [35, 77] 1 x [4, 12, 77] 13 x [36, 76] 4 x [1, 16, 76] 1 x [5, 12, 76] 13 x [37, 75] 2 x [5, 13, 75] 13 x [38, 74] 3 x [2, 17, 74] 13 x [39, 73] 10 x [40, 72] 11 x [41, 71] 8 x [42, 70] 4 x [4, 19, 70] 10 x [43, 69] 6 x [3, 21, 69] 11 x [44, 68] 5 x [45, 67] 3 x [5, 21, 67] 10 x [46, 66] 5 x [8, 19, 66] 9 x [47, 65] 5 x [9, 19, 65] 9 x [48, 64] 6 x [49, 63] 10 x [50, 62] 6 x [14, 17, 62] 9 x [51, 61] 1 x [2, 30, 61] 13 x [52, 60] 3 x [10, 23, 60] 1 x [15, 18, 60] 12 x [53, 59] 6 x [6, 28, 59] 9 x [54, 58] 4 x [8, 27, 58] 1 x [1, 7, 8, 58] 11 x [55, 57] 9 x [11, 26, 56] 4 x [1, 6, 11, 56] 1 x [1, 11, 56] 2 x [56, 56] 4 x [14, 30, 49] 1 x [13, 32, 48] 2 x [4, 10, 12, 48] 5 x [24, 24, 45] 1 x [3, 5, 21, 45] 3 x [4, 10, 15, 45] 4 x [22, 27, 44] 3 x [23, 29, 41] 1 x [11, 41, 41] 1 x [5, 12, 23, 34] 1 x [7, 7, 27, 33] 1 x [3, 30, 31] 2 x [4, 10, 29, 31] 1 x [1, 8, 8, 31] 6 x [9, 12, 23, 30] 1 x [13, 14, 17, 30] 2 x [1, 13, 30, 30] 8 x [7, 16, 22, 29] 1 x [10, 13, 29] 1 x [8, 11, 27, 28] 9 x [8, 18, 20, 28] 2 x [9, 19, 19, 27] 2 x [4, 7, 7, 10, 27] 5 x [13, 15, 21, 25] 3 x [4, 7, 10, 11, 23]