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fix #5424

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Nikolaj Bjorner 2021-07-22 18:31:37 -07:00
parent 848a8ebb98
commit 800fef6653
2 changed files with 8 additions and 5 deletions
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12
src/model/model.cpp
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@ -22,6 +22,7 @@ Revision History:
#include "ast/ast_ll_pp.h"
#include "ast/rewriter/var_subst.h"
#include "ast/rewriter/th_rewriter.h"
#include "ast/rewriter/expr_safe_replace.h"
#include "ast/array_decl_plugin.h"
#include "ast/bv_decl_plugin.h"
#include "ast/recfun_decl_plugin.h"
@ -605,12 +606,13 @@ void model::add_rec_funs() {
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)));
expr_safe_replace subst(m);
unsigned arity = f->get_arity();
for (unsigned i = 0; i < arity; ++i) {
subst.insert(m.mk_var(arity - i - 1, f->get_domain(i)), m.mk_var(i, f->get_domain(i)));
}
var_subst sub(m, true);
expr_ref bodyr = sub(rhs, subst);
expr_ref bodyr(m);
subst(rhs, bodyr);
fi->set_else(bodyr);
register_decl(f, fi);

1
src/sat/smt/q_eval.cpp
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@ -69,6 +69,7 @@ namespace q {
}
if (idx == UINT_MAX)
return l_false;
c.m_watch = idx;
return l_undef;
}