Build (method = -2) #dp: 39173 Step-3' Graph: 3968 vertices and 11897 arcs (0.64s) Step-4' Graph: 1212 vertices and 6385 arcs (0.66s) #V4/#V3 = 0.31 #A4/#A3 = 0.54 Ready! (0.66s) Optimize a model with 1332 rows, 6386 columns and 16738 nonzeros Presolve removed 57 rows and 156 columns Presolve time: 0.06s Presolved: 1275 rows, 6230 columns, 16498 nonzeros Variable types: 0 continuous, 6230 integer (93 binary) Found heuristic solution: objective 4737.0000000 Optimize a model with 1275 rows, 6230 columns and 16498 nonzeros Presolve removed 3 rows and 3 columns Presolved: 1272 rows, 6227 columns, 16520 nonzeros Root barrier log... Ordering time: 0.01s Barrier statistics: AA' NZ : 1.055e+04 Factor NZ : 5.256e+04 (roughly 3 MBytes of memory) Factor Ops : 4.508e+06 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.09131886e+05 -2.19314376e+06 9.43e+06 1.51e-01 3.30e+03 0s 1 9.55418241e+04 -1.12928983e+06 1.31e+06 7.77e-16 5.03e+02 0s 2 2.20239672e+04 -4.65595215e+05 1.99e+05 3.11e-15 9.40e+01 0s 3 8.77982643e+03 -1.07559223e+05 2.79e+04 3.55e-15 1.56e+01 0s 4 6.70713057e+03 -4.93176859e+04 8.49e+03 9.77e-15 6.10e+00 0s 5 5.96809663e+03 -2.43274895e+04 2.91e+03 5.55e-15 2.85e+00 0s 6 5.32467583e+03 -1.60010339e+04 1.06e+03 2.22e-15 1.83e+00 0s 7 4.59157669e+03 -1.06186373e+04 2.68e+02 1.67e-15 1.24e+00 0s 8 3.98276300e+03 -3.03449699e+03 1.28e+02 6.66e-16 5.68e-01 0s 9 3.44889287e+03 -9.51815848e+02 4.81e+01 6.66e-16 3.54e-01 0s 10 3.24393839e+03 4.67898860e+02 3.41e+01 7.77e-16 2.23e-01 0s 11 2.99739932e+03 1.33165116e+03 1.95e+01 6.69e-16 1.34e-01 0s 12 2.84118984e+03 1.78455563e+03 1.06e+01 6.98e-16 8.46e-02 0s 13 2.78253330e+03 2.19811212e+03 6.67e+00 6.65e-16 4.68e-02 0s 14 2.71489461e+03 2.42013933e+03 2.47e+00 6.98e-16 2.35e-02 0s 15 2.69550658e+03 2.50710228e+03 1.48e+00 8.07e-16 1.50e-02 0s 16 2.68177324e+03 2.57326987e+03 8.57e-01 7.35e-16 8.66e-03 0s 17 2.67403825e+03 2.60701206e+03 5.76e-01 6.67e-16 5.35e-03 0s 18 2.66675123e+03 2.62695427e+03 3.29e-01 6.83e-16 3.18e-03 0s 19 2.66215281e+03 2.64108169e+03 1.86e-01 6.12e-16 1.68e-03 0s 20 2.65817679e+03 2.65120141e+03 5.51e-02 7.98e-16 5.57e-04 0s 21 2.65591433e+03 2.65403725e+03 3.61e-03 7.08e-16 1.50e-04 0s 22 2.65567214e+03 2.65562975e+03 3.15e-04 6.88e-16 3.38e-06 0s 23 2.65564647e+03 2.65564646e+03 1.29e-08 6.66e-16 1.95e-10 0s Barrier solved model in 23 iterations and 0.19 seconds Optimal objective 2.65564647e+03 Root relaxation: objective 2.655646e+03, 1200 iterations, 0.20 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2655.64646 0 151 4737.00000 2655.64646 43.9% - 0s H 0 0 2665.0000000 2655.64646 0.35% - 0s H 0 0 2663.0000000 2655.64646 0.28% - 0s H 0 0 2656.0000000 2655.64646 0.01% - 0s Explored 0 nodes (2466 simplex iterations) in 0.70 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.656000000000e+03, best bound 2.656000000000e+03, gap 0.0% Preprocessing time: 0.69 seconds Gurobi run time: 0.70 seconds Total run time: 1.39 seconds Objective: 2656 Solution: 1 x [17, 116] 73 x [17, 55, 60] 14 x [17, 60, 71] 5 x [2, 17, 41] 75 x [18, 62] 8 x [15, 18, 54] 37 x [85, 100] 60 x [76, 100, 104] 10 x [7, 41, 80] 8 x [68, 80, 104] 74 x [12, 97] 38 x [7, 25, 44] 38 x [13, 33, 44] 7 x [26, 41, 44] 46 x [39, 42] 20 x [21, 70, 90] 16 x [52, 79] 37 x [14, 25, 96] 4 x [14, 87, 111] 46 x [14, 26, 107] 6 x [32, 36, 53] 42 x [36, 53, 63] 16 x [53, 61, 107] 10 x [19, 78] 50 x [6, 19] 4 x [19, 28] 68 x [10, 35] 29 x [31, 35, 99] 2 x [43, 47] 23 x [12, 43] 6 x [43, 89, 90] 3 x [43, 70, 90] 9 x [102, 119] 22 x [30, 82, 119] 10 x [20, 65, 77] 2 x [13, 20, 74] 6 x [20, 85, 89] 16 x [24, 50] 25 x [24, 31] 3 x [73, 103, 105] 43 x [57, 83] 32 x [57, 69, 110] 18 x [57, 107, 111] 2 x [38, 54, 109] 65 x [8, 38] 23 x [11, 38] 36 x [94, 118] 16 x [31, 94] 75 x [50, 112] 32 x [88, 93] 50 x [73, 106] 2 x [49, 89, 103] 26 x [49, 81, 103] 20 x [34, 49] 8 x [45, 91] 2 x [45, 59] 26 x [16, 45] 1 x [29, 45, 108] 26 x [7, 27] 1 x [91, 99] 10 x [84, 91] 42 x [91, 101] 58 x [52, 116] 7 x [72, 87] 1 x [75, 98] 13 x [13, 103, 110] 34 x [48, 93, 103] 2 x [12, 74, 103] 6 x [65, 67, 96] 71 x [2, 67, 113] 7 x [13, 67, 69] 1 x [13, 67, 104] 15 x [67, 74, 87] 57 x [5, 98] 19 x [31, 98, 108] 73 x [51, 108] 28 x [1, 29, 93] 23 x [6, 29] 44 x [40, 84] 2 x [40, 108] 9 x [29, 40] 16 x [33, 42, 74] 43 x [66, 99] 42 x [5, 86] 51 x [37, 95] 19 x [37, 115] 1 x [9, 37] 5 x [37, 86] 7 x [25, 77, 120] 40 x [64, 77] 14 x [36, 69, 77] 3 x [61, 77, 110] 1 x [54, 77, 107] 26 x [7, 54, 109] 1 x [54, 68, 109] 48 x [23, 68, 74] 3 x [32, 36, 68] 23 x [41, 68, 111] 3 x [3, 48, 109] 12 x [3, 23, 89] 77 x [3, 58] 3 x [30, 54, 70, 109] 4 x [2, 4, 74] 1 x [4, 33, 74] 25 x [13, 56, 76] 7 x [13, 71, 76] 1 x [13, 71] 39 x [56, 70, 73] 2 x [30, 54, 73] 42 x [15, 54, 114] 6 x [30, 54, 114] 3 x [26, 74, 104] 12 x [26, 32, 82] 21 x [15, 46, 69] 57 x [22, 46, 82] 3 x [32, 92, 117]