我正在解决一个小型MINLP模型。这是.nl文件。
g3 1 1 0 # problem unknown
79 102 1 0 24 # vars, constraints, objectives, ranges, eqns
6 0 0 0 0 0 # nonlinear constrs, objs; ccons: lin, nonlin, nd, nzlb
0 0 # network constraints: nonlinear, linear
21 0 0 # nonlinear vars in constraints, objectives, both
0 0 0 1 # linear network variables; functions; arith, flags
24 0 0 0 0 # discrete variables: binary, integer, nonlinear (b,c,o)
276 6 # nonzeros in Jacobian, obj. gradient
0 0 # max name lengths: constraints, variables
0 0 0 0 0 # common exprs: b,c,o,c1,o1
C0
o54
3
o2
v3
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v15
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C1
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v16
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o54
3
o2
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3
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o54
3
o2
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v20
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C6
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C96
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C97
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C98
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C99
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C100
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C101
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O0 0
n0
x0
r
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
4 0.0
1 0.0
1 0.0
1 0.0
1 0.0
1 0.0
1 0.0
1 0.0
1 0.0
1 0.0
1 0.0
1 0.0
1 0.0
1 0.0
1 0.0
1 0.0
1 0.0
1 0.0
1 0.0
2 -0.05
2 -0.05
2 -0.05
2 -0.05
2 -0.05
2 -0.05
2 -0.05
2 -0.05
2 -0.05
2 -0.05
2 -0.05
2 -0.05
2 -0.05
2 -0.05
2 -0.05
2 -0.05
2 -0.05
2 -0.05
1 100000.0
1 100000.0
1 100000.0
1 100000.0
1 100000.0
1 100000.0
1 100000.0
1 100000.0
1 100000.0
1 100000.0
1 100000.0
1 100000.0
1 100000.0
1 100000.0
1 100000.0
1 100000.0
1 100000.0
1 100000.0
1 -0.05
1 -0.05
1 -0.05
1 -0.05
1 -0.05
1 -0.05
1 -0.05
1 -0.05
1 -0.05
1 -0.05
1 -0.05
1 -0.05
1 -0.05
1 -0.05
1 -0.05
1 -0.05
1 -0.05
1 -0.05
1 -1.0
1 -1.0
1 -1.0
1 0.0
1 0.0
1 0.0
b
0 -10 10
0 -10 10
0 -10 10
2 0
2 0
2 0
2 0
2 0
2 0
2 0
2 0
2 0
2 0
2 0
2 0
2 0
2 0
2 0
2 0
2 0
2 0
0 -10 10
0 -10 10
0 -10 10
0 -10 10
0 -10 10
0 -10 10
0 -10 10
0 -10 10
0 -10 10
0 -10 10
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
k78
6
12
18
23
28
33
38
43
48
53
58
63
68
73
78
83
88
93
98
103
108
114
120
126
132
138
144
150
156
162
168
171
174
177
180
183
186
189
192
195
198
201
204
207
210
213
216
219
222
224
226
228
230
232
234
236
238
240
242
244
246
248
250
252
254
256
258
260
262
264
266
268
270
271
272
273
274
275
J0 8
30 1.0
49 -1.0
0 0
1 0
2 0
3 0
9 0
15 0
J1 8
30 1.0
50 -1.0
0 0
1 0
2 0
4 0
10 0
16 0
J2 8
30 1.0
51 -1.0
0 0
1 0
2 0
5 0
11 0
17 0
J3 8
30 1.0
52 -1.0
0 0
1 0
2 0
6 0
12 0
18 0
J4 8
30 1.0
53 -1.0
0 0
1 0
2 0
7 0
13 0
19 0
J5 8
30 1.0
54 -1.0
0 0
1 0
2 0
8 0
14 0
20 0
J6 4
21 -1.75
24 -1.75
27 1
31 -1
J7 4
22 -1.75
25 -1.75
28 1
37 -1
J8 4
23 -1.75
26 -1.75
29 1
43 -1
J9 4
21 2
24 2
27 1
32 -1
J10 4
22 2
25 2
28 1
38 -1
J11 4
23 2
26 2
29 1
44 -1
J12 4
21 2.5
24 2.5
27 1
33 -1
J13 4
22 2.5
25 2.5
28 1
39 -1
J14 4
23 2.5
26 2.5
29 1
45 -1
J15 4
21 -1.5
24 -1.5
27 1
34 -1
J16 4
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25 -1.5
28 1
40 -1
J17 4
23 -1.5
26 -1.5
29 1
46 -1
J18 4
21 -2
24 -2
27 1
35 -1
J19 4
22 -2
25 -2
28 1
41 -1
J20 4
23 -2
26 -2
29 1
47 -1
J21 4
21 -2.5
24 -2.5
27 1
36 -1
J22 4
22 -2.5
25 -2.5
28 1
42 -1
J23 4
23 -2.5
26 -2.5
29 1
48 -1
J24 2
31 1
3 -1
J25 2
37 1
9 -1
J26 2
43 1
15 -1
J27 2
32 1
4 -1
J28 2
38 1
10 -1
J29 2
44 1
16 -1
J30 2
33 1
5 -1
J31 2
39 1
11 -1
J32 2
45 1
17 -1
J33 2
34 1
6 -1
J34 2
40 1
12 -1
J35 2
46 1
18 -1
J36 2
35 1
7 -1
J37 2
41 1
13 -1
J38 2
47 1
19 -1
J39 2
36 1
8 -1
J40 2
42 1
14 -1
J41 2
48 1
20 -1
J42 1
3 1
J43 1
9 1
J44 1
15 1
J45 1
4 1
J46 1
10 1
J47 1
16 1
J48 1
5 1
J49 1
11 1
J50 1
17 1
J51 1
6 1
J52 1
12 1
J53 1
18 1
J54 1
7 1
J55 1
13 1
J56 1
19 1
J57 1
8 1
J58 1
14 1
J59 1
20 1
J60 3
31 -1
3 1
55 100000
J61 3
37 -1
9 1
61 100000
J62 3
43 -1
15 1
67 100000
J63 3
32 -1
4 1
56 100000
J64 3
38 -1
10 1
62 100000
J65 3
44 -1
16 1
68 100000
J66 3
33 -1
5 1
57 100000
J67 3
39 -1
11 1
63 100000
J68 3
45 -1
17 1
69 100000
J69 3
34 -1
6 1
58 100000
J70 3
40 -1
12 1
64 100000
J71 3
46 -1
18 1
70 100000
J72 3
35 -1
7 1
59 100000
J73 3
41 -1
13 1
65 100000
J74 3
47 -1
19 1
71 100000
J75 3
36 -1
8 1
60 100000
J76 3
42 -1
14 1
66 100000
J77 3
48 -1
20 1
72 100000
J78 2
3 1
55 -100000
J79 2
9 1
61 -100000
J80 2
15 1
67 -100000
J81 2
4 1
56 -100000
J82 2
10 1
62 -100000
J83 2
16 1
68 -100000
J84 2
5 1
57 -100000
J85 2
11 1
63 -100000
J86 2
17 1
69 -100000
J87 2
6 1
58 -100000
J88 2
12 1
64 -100000
J89 2
18 1
70 -100000
J90 2
7 1
59 -100000
J91 2
13 1
65 -100000
J92 2
19 1
71 -100000
J93 2
8 1
60 -100000
J94 2
14 1
66 -100000
J95 2
20 1
72 -100000
J96 2
49 -1
73 -100000
J97 2
50 -1
74 -100000
J98 2
51 -1
75 -100000
J99 2
52 1
76 -100000
J100 2
53 1
77 -100000
J101 2
54 1
78 -100000
G0 6
73 1
74 1
75 1
76 1
77 1
78 1
解算器可以在几秒钟内找到一个好的上限（问题为1），但在几小时内仍然难以改善下限。下限确实是0。因此，最优性差距保持无穷大。直觉上，最佳值应该是1.我无法弄清楚这个问题是怎么回事。有人可以给出一些提示或建议吗？谢谢！