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fix #2468, adding assignment phase heuristic

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-08-10 15:24:42 -07:00
parent 42e21458ba
commit 9fa9aa09ff
19 changed files with 268 additions and 79 deletions
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8
src/smt/smt_model_generator.h
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@ -84,7 +84,7 @@ namespace smt {
extra_fresh_value(sort * s, unsigned idx):m_sort(s), m_idx(idx), m_value(nullptr) {}
sort * get_sort() const { return m_sort; }
unsigned get_idx() const { return m_idx; }
void set_value(expr * n) { SASSERT(m_value == 0); m_value = n; }
void set_value(expr * n) { SASSERT(!m_value); m_value = n; }
expr * get_value() const { return m_value; }
};
@ -178,7 +178,7 @@ namespace smt {
\brief Auxiliary class used during model generation.
*/
class model_generator {
ast_manager & m_manager;
ast_manager & m;
context * m_context;
ptr_vector<extra_fresh_value> m_extra_fresh_values;
unsigned m_fresh_idx;
@ -226,7 +226,7 @@ namespace smt {
expr * get_some_value(sort * s);
proto_model & get_model() { SASSERT(m_model); return *m_model; }
void register_value(expr * val);
ast_manager & get_manager() { return m_manager; }
ast_manager & get_manager() { return m; }
proto_model* mk_model();
obj_map<enode, app *> const & get_root2value() const { return m_root2value; }
@ -235,7 +235,7 @@ namespace smt {
void hide(func_decl * f) {
if (!m_hidden_ufs.contains(f)) {
m_hidden_ufs.insert(f);
m_manager.inc_ref(f);
m.inc_ref(f);
}
}
};