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Compressed func_interps in extension_model_converter.

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Fixes #547.
This commit is contained in:
Christoph M. Wintersteiger 2016-04-01 15:17:38 +01:00
parent eb9c5b7cdb
commit d55a6725c9
2 changed files with 52 additions and 7 deletions
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48
src/tactic/extension_model_converter.cpp
View file

@ -43,6 +43,41 @@ static void display_decls_info(std::ostream & out, model_ref & md) {
}
}
bool extension_model_converter::is_fi_entry_expr(expr * e, unsigned arity, ptr_vector<expr> & args) {
args.reset();
if (!is_app(e) || !m().is_ite(to_app(e)))
return false;
app * a = to_app(e);
expr * c = a->get_arg(0);
expr * t = a->get_arg(1);
expr * f = a->get_arg(2);
if ((arity == 0) ||
(arity == 1 && (!m().is_eq(c) || to_app(c)->get_num_args() != 2)) ||
(arity > 1 && (!m().is_and(c) || to_app(c)->get_num_args() != arity)))
return false;
args.resize(arity, 0);
for (unsigned i = 0; i < arity; i++) {
expr * ci = (arity == 1 && i == 0) ? to_app(c) : to_app(c)->get_arg(i);
if (!m().is_eq(ci) || to_app(ci)->get_num_args() != 2)
return false;
expr * a0 = to_app(ci)->get_arg(0);
expr * a1 = to_app(ci)->get_arg(1);
if (is_var(a0) && to_var(a0)->get_idx() == i)
args[i] = a1;
else if (is_var(a1) && to_var(a1)->get_idx() == i)
args[i] = a0;
else
return false;
}
return true;
}
void extension_model_converter::operator()(model_ref & md, unsigned goal_idx) {
SASSERT(goal_idx == 0);
TRACE("extension_mc", model_v2_pp(tout, *md); display_decls_info(tout, md););
@ -62,7 +97,14 @@ void extension_model_converter::operator()(model_ref & md, unsigned goal_idx) {
}
else {
func_interp * new_fi = alloc(func_interp, m(), arity);
new_fi->set_else(val);
expr * e = val.get();
ptr_vector<expr> args;
while (is_fi_entry_expr(e, arity, args)) {
TRACE("extension_mc", tout << "fi entry: " << mk_ismt2_pp(e, m()) << std::endl;);
new_fi->insert_entry(args.c_ptr(), to_app(e)->get_arg(1));
e = to_app(e)->get_arg(2);
}
new_fi->set_else(e);
md->register_decl(f, new_fi);
}
}
@ -86,10 +128,10 @@ void extension_model_converter::display(std::ostream & out) {
}
model_converter * extension_model_converter::translate(ast_translation & translator) {
extension_model_converter * res = alloc(extension_model_converter, translator.to());
extension_model_converter * res = alloc(extension_model_converter, translator.to());
for (unsigned i = 0; i < m_vars.size(); i++)
res->m_vars.push_back(translator(m_vars[i].get()));
for (unsigned i = 0; i < m_defs.size(); i++)
res->m_defs.push_back(translator(m_defs[i].get()));
res->m_defs.push_back(translator(m_defs[i].get()));
return res;
}

11
src/tactic/extension_model_converter.h
View file

@ -27,14 +27,14 @@ Notes:
class extension_model_converter : public model_converter {
func_decl_ref_vector m_vars;
expr_ref_vector m_defs;
public:
public:
extension_model_converter(ast_manager & m):m_vars(m), m_defs(m) {
}
virtual ~extension_model_converter();
ast_manager & m() const { return m_vars.get_manager(); }
virtual void operator()(model_ref & md, unsigned goal_idx);
virtual void display(std::ostream & out);
@ -43,6 +43,9 @@ public:
void insert(func_decl * v, expr * def);
virtual model_converter * translate(ast_translation & translator);
private:
bool is_fi_entry_expr(expr * e, unsigned arity, ptr_vector<expr> & args);
};