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working on sn

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2013-12-27 15:08:27 -08:00
parent 8f1a235f00
commit 4cd2731b20
1 changed files with 27 additions and 1 deletions
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28
src/smt/theory_pb.cpp
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@ -100,6 +100,9 @@ namespace smt {
else if (n == 1) {
out.push_back(xs[0]);
}
else if (n == 2) {
merge(t, 1, xs, 1, xs+1, out);
}
else {
literal_vector out1, out2;
unsigned l = n/2; // TBD
@ -112,7 +115,30 @@ namespace smt {
}
}
void smerge(cmp_t t, );
void smerge(cmp_t t,
unsigned a, literal const* as,
unsigned b, literal const* bs,
unsigned c,
literal_vector& out) {
if (a == 1 && b == 1 && c == 1) {
literal y = fresh();
add_clause(~as[0], y);
add_clause(~bs[0], y);
out.push_back(y);
}
else if (a > c) {
smerge(t, a - c, as, b, bs, c, out);
}
else if (b > c) {
smerge(t, a, as, b - c, bs, c, out);
}
else if (a + b <= c) {
merge(t, a, as, b, bs, out);
}
else if (a <= c && b <= c && even(c)) {
}
}
};
#endif
class pb_lit_rewriter_util {