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add API

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-03-25 17:42:27 -07:00
parent e3a2168a20
commit 5536834019
10 changed files with 223 additions and 27 deletions
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22
src/smt/theory_special_relations.h
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@ -52,9 +52,9 @@ namespace smt {
r.ensure_var(v2);
literal_vector ls;
ls.push_back(literal(b, false));
m_pos = r.m_graph.add_edge(v1, v2, s_integer(1), ls); // v2 <= v1
m_pos = r.m_graph.add_edge(v1, v2, s_integer(0), ls); // v1 <= v2
ls[0] = literal(b, true);
m_neg = r.m_graph.add_edge(v2, v1, s_integer(-2), ls); // v1 <= v2 - 1
m_neg = r.m_graph.add_edge(v2, v1, s_integer(-1), ls); // v2 + 1 <= v1
}
bool_var var() const { return m_bvar;}
relation& get_relation() const { return m_relation; }
@ -80,22 +80,24 @@ namespace smt {
};
struct graph : public dl_graph<int_ext> {
bool add_strict_edge(theory_var v1, theory_var v2, literal_vector const& j) {
return enable_edge(add_edge(v1, v2, s_integer(1), j));
// v1 + 1 <= v2
return enable_edge(add_edge(v1, v2, s_integer(-1), j));
}
bool add_non_strict_edge(theory_var v1, theory_var v2, literal_vector const& j) {
return enable_edge(add_edge(v1, v2, s_integer(-2), j));
// v1 <= v2
return enable_edge(add_edge(v1, v2, s_integer(0), j));
}
};
typedef union_find<union_find_default_ctx> union_find_t;
struct relation {
sr_property m_property;
func_decl* m_decl;
atoms m_asserted_atoms; // set of asserted atoms
unsigned m_asserted_qhead;
svector<scope> m_scopes;
graph m_graph;
sr_property m_property;
func_decl* m_decl;
atoms m_asserted_atoms; // set of asserted atoms
unsigned m_asserted_qhead;
svector<scope> m_scopes;
graph m_graph;
union_find_default_ctx m_ufctx;
union_find_t m_uf;
literal_vector m_explanation;