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fix #2659

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-10-25 09:13:18 -07:00
parent a8049c7feb
commit 64dd4e1c83
6 changed files with 58 additions and 27 deletions
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8
src/ast/rewriter/seq_rewriter.cpp
View file

@ -18,16 +18,16 @@ Notes:
--*/
#include "util/uint_set.h"
#include "ast/rewriter/seq_rewriter.h"
#include "ast/arith_decl_plugin.h"
#include "ast/ast_pp.h"
#include "ast/ast_ll_pp.h"
#include "ast/ast_util.h"
#include "util/uint_set.h"
#include "math/automata/automaton.h"
#include "ast/well_sorted.h"
#include "ast/rewriter/var_subst.h"
#include "ast/rewriter/bool_rewriter.h"
#include "math/automata/automaton.h"
#include "math/automata/symbolic_automata_def.h"
@ -810,6 +810,10 @@ br_status seq_rewriter::mk_seq_extract(expr* a, expr* b, expr* c, expr_ref& resu
result = m_util.str.mk_concat(_len, as.c_ptr() + offset);
return BR_DONE;
}
if (i == as.size()) {
result = m_util.str.mk_concat(as.size() - offset, as.c_ptr() + offset);
return BR_DONE;
}
}
if (offset == 0) {
return BR_FAILED;

1
src/ast/seq_decl_plugin.cpp
View file

@ -667,6 +667,7 @@ func_decl* seq_decl_plugin::mk_assoc_fun(decl_kind k, unsigned arity, sort* cons
match_right_assoc(*m_sigs[k], arity, domain, range, rng);
func_decl_info info(m_family_id, k_seq);
info.set_right_associative(true);
info.set_left_associative(true);
return m.mk_func_decl(m_sigs[(rng == m_string)?k_string:k_seq]->m_name, rng, rng, rng, info);
}