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fix #5289

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This commit is contained in:
Nikolaj Bjorner 2021-05-30 10:32:30 -07:00
parent 4d41db2920
commit b1606487f0
9 changed files with 88 additions and 41 deletions
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30
src/model/model.cpp
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@ -24,6 +24,7 @@ Revision History:
#include "ast/rewriter/th_rewriter.h"
#include "ast/array_decl_plugin.h"
#include "ast/bv_decl_plugin.h"
#include "ast/recfun_decl_plugin.h"
#include "ast/well_sorted.h"
#include "ast/used_symbols.h"
#include "ast/for_each_expr.h"
@ -582,3 +583,32 @@ void model::reset_eval_cache() {
m_mev.reset();
}
void model::add_rec_funs() {
recfun::util u(m);
func_decl_ref_vector recfuns = u.get_rec_funs();
for (func_decl* f : recfuns) {
auto& def = u.get_def(f);
expr* rhs = def.get_rhs();
if (!rhs)
continue;
if (has_interpretation(f))
continue;
if (f->get_arity() == 0) {
register_decl(f, rhs);
continue;
}
func_interp* fi = alloc(func_interp, m, f->get_arity());
// reverse argument order so that variable 0 starts at the beginning.
expr_ref_vector subst(m);
for (unsigned i = 0; i < f->get_arity(); ++i) {
subst.push_back(m.mk_var(i, f->get_domain(i)));
}
var_subst sub(m, true);
expr_ref bodyr = sub(rhs, subst);
fi->set_else(bodyr);
register_decl(f, fi);
}
TRACE("model", tout << *this << "\n";);
}

1
src/model/model.h
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@ -108,6 +108,7 @@ public:
void reset_eval_cache();
bool has_solver();
void set_solver(expr_solver* solver);
void add_rec_funs();
class scoped_model_completion {
bool m_old_completion;