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fix bit2bool bug reported by Jianying Li

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-01-04 07:46:53 -08:00
parent b533ba39d6
commit 0d400a5ad6
9 changed files with 49 additions and 20 deletions
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16
src/ast/rewriter/bv_rewriter.cpp
View file

@ -196,6 +196,9 @@ br_status bv_rewriter::mk_app_core(func_decl * f, unsigned num_args, expr * cons
return mk_bv_comp(args[0], args[1], result);
case OP_MKBV:
return mk_mkbv(num_args, args, result);
case OP_BIT2BOOL:
SASSERT(num_args == 1);
return mk_bit2bool(args[0], f->get_parameter(0).get_int(), result);
case OP_BSMUL_NO_OVFL:
return mk_bvsmul_no_overflow(num_args, args, result);
case OP_BUMUL_NO_OVFL:
@ -2203,6 +2206,19 @@ br_status bv_rewriter::mk_bv_mul(unsigned num_args, expr * const * args, expr_re
return st;
}
br_status bv_rewriter::mk_bit2bool(expr * n, int idx, expr_ref & result) {
rational v, bit;
unsigned sz = 0;
if (!is_numeral(n, v, sz))
return BR_FAILED;
if (idx < 0 || idx >= static_cast<int>(sz))
return BR_FAILED;
div(v, rational::power_of_two(idx), bit);
mod(bit, rational(2), bit);
result = m().mk_bool_val(bit.is_one());
return BR_DONE;
}
br_status bv_rewriter::mk_bit2bool(expr * lhs, expr * rhs, expr_ref & result) {
unsigned sz = get_bv_size(lhs);
if (sz != 1)

1
src/ast/rewriter/bv_rewriter.h
View file

@ -134,6 +134,7 @@ class bv_rewriter : public poly_rewriter<bv_rewriter_core> {
br_status mk_bv_redand(expr * arg, expr_ref & result);
br_status mk_bv_comp(expr * arg1, expr * arg2, expr_ref & result);
br_status mk_bit2bool(expr * lhs, expr * rhs, expr_ref & result);
br_status mk_bit2bool(expr * lhs, int idx, expr_ref & result);
br_status mk_blast_eq_value(expr * lhs, expr * rhs, expr_ref & result);
br_status mk_eq_concat(expr * lhs, expr * rhs, expr_ref & result);
br_status mk_mkbv(unsigned num, expr * const * args, expr_ref & result);

20
src/cmd_context/extra_cmds/dbg_cmds.cpp
View file

@ -524,11 +524,21 @@ public:
for (func_decl* v : m_vars) vars.push_back(v);
for (expr* e : m_lits) lits.push_back(e);
flatten_and(lits);
qe::term_graph tg(m);
tg.set_vars(vars, false);
tg.add_lits(lits);
expr_ref_vector p = tg.project();
ctx.regular_stream() << p << "\n";
solver_factory& sf = ctx.get_solver_factory();
params_ref pa;
solver_ref s = sf(m, pa, false, true, true, symbol::null);
solver_ref se = sf(m, pa, false, true, true, symbol::null);
s->assert_expr(lits);
lbool r = s->check_sat();
if (r != l_true) {
ctx.regular_stream() << "sat check " << r << "\n";
return;
}
model_ref mdl;
s->get_model(mdl);
qe::euf_arith_mbi_plugin plugin(s.get(), se.get());
plugin.project(mdl, lits);
ctx.regular_stream() << lits << "\n";
}
};

4
src/qe/qe_arrays.cpp
View file

@ -798,7 +798,7 @@ namespace qe {
*/
expr* reduce_core (app *a) {
if (!m_arr_u.is_store (a->get_arg (0))) return a;
expr* array = a->get_arg(0);
expr* array = a->get_arg(0);
unsigned arity = get_array_arity(m.get_sort(array));
expr* const* js = a->get_args() + 1;
@ -810,7 +810,7 @@ namespace qe {
if (is_equals (arity, idxs, js)) {
add_idx_cond (cond);
return a->get_arg (2);
return a->get_arg (a->get_num_args() - 1);
}
else {
cond = m.mk_not (cond);

2
src/qe/qe_mbi.cpp
View file

@ -256,6 +256,8 @@ namespace qe {
void euf_arith_mbi_plugin::project(model_ref& mdl, expr_ref_vector& lits) {
TRACE("qe", tout << lits << "\n" << *mdl << "\n";);
TRACE("qe", tout << m_solver->get_assertions() << "\n";);
// 1. arithmetical variables - atomic and in purified positions
app_ref_vector proxies(m);

2
src/qe/qe_mbi.h
View file

@ -106,7 +106,6 @@ namespace qe {
app_ref_vector get_arith_vars(model_ref& mdl, expr_ref_vector& lits, app_ref_vector& proxies);
bool get_literals(model_ref& mdl, expr_ref_vector& lits);
void collect_atoms(expr_ref_vector const& fmls);
void project(model_ref& mdl, expr_ref_vector& lits);
void project_euf(model_ref& mdl, expr_ref_vector& lits, app_ref_vector& avars);
void order_avars(model_ref& mdl, expr_ref_vector& lits, app_ref_vector& avars, app_ref_vector const& proxies);
void substitute(vector<def> const& defs, expr_ref_vector& lits);
@ -115,6 +114,7 @@ namespace qe {
euf_arith_mbi_plugin(solver* s, solver* emptySolver);
~euf_arith_mbi_plugin() override {}
mbi_result operator()(expr_ref_vector& lits, model_ref& mdl) override;
void project(model_ref& mdl, expr_ref_vector& lits);
void block(expr_ref_vector const& lits) override;
};

9
src/smt/theory_pb.cpp
View file

@ -723,10 +723,11 @@ namespace smt {
ineqs = alloc(ptr_vector<ineq>);
m_var_infos[lit.var()].m_lit_watch[lit.sign()] = ineqs;
}
for (auto* c1 : *ineqs) {
//if (c1 == c) return;
SASSERT (c1 != c);
}
DEBUG_CODE(
for (auto* c1 : *ineqs) {
//if (c1 == c) return;
SASSERT (c1 != c);
});
ineqs->push_back(c);
}

5
src/smt/theory_seq.cpp
View file

@ -3495,12 +3495,11 @@ bool theory_seq::add_itos_val_axiom(expr* e) {
}
bool theory_seq::add_stoi_val_axiom(expr* e) {
context& ctx = get_context();
expr* n = nullptr;
rational val, val2;
VERIFY(m_util.str.is_stoi(e, n));
TRACE("seq", tout << mk_pp(e, m) << " " << ctx.get_scope_level () << " " << get_length(n, val) << " " << val << "\n";);
TRACE("seq", tout << mk_pp(e, m) << " " << get_context().get_scope_level () << " " << get_length(n, val) << " " << val << "\n";);
if (m_util.str.is_itos(n)) {
return false;
@ -3951,7 +3950,6 @@ model_value_proc * theory_seq::mk_value(enode * n, model_generator & mg) {
app* theory_seq::mk_value(app* e) {
expr_ref result(m);
context& ctx = get_context();
e = get_ite_value(e);
result = m_rep.find(e);
@ -4705,7 +4703,6 @@ bool theory_seq::lower_bound2(expr* _e, rational& lo) {
bool theory_seq::get_length(expr* e, rational& val) const {
context& ctx = get_context();
rational val1;
expr_ref len(m), len_val(m);
expr* e1 = nullptr, *e2 = nullptr;

10
src/smt/theory_str.cpp
View file

@ -1682,10 +1682,10 @@ namespace smt {
expr_ref i1(mk_int_var("i1"), m);
expr_ref result(mk_str_var("result"), m);
expr * replaceS;
expr * replaceT;
expr * replaceTPrime;
u.str.is_replace(ex, replaceS, replaceT, replaceTPrime);
expr * replaceS = nullptr;
expr * replaceT = nullptr;
expr * replaceTPrime = nullptr;
VERIFY(u.str.is_replace(ex, replaceS, replaceT, replaceTPrime));
// t empty => result = (str.++ t' s)
expr_ref emptySrcAst(ctx.mk_eq_atom(replaceT, mk_string("")), m);
@ -4851,6 +4851,7 @@ namespace smt {
bool theory_str::get_arith_value(expr* e, rational& val) const {
context& ctx = get_context();
ast_manager & m = get_manager();
(void)m;
if (!ctx.e_internalized(e)) {
return false;
}
@ -8255,6 +8256,7 @@ namespace smt {
void theory_str::check_eqc_concat_concat(std::set<expr*> & eqc_concat_lhs, std::set<expr*> & eqc_concat_rhs) {
ast_manager & m = get_manager();
(void)m;
int hasCommon = 0;
if (!eqc_concat_lhs.empty() && !eqc_concat_rhs.empty()) {