mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-23 17:15:31 +00:00
Code Activity

remove legacy interface to dt2bv tactic

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-10-18 23:04:17 -04:00
parent 3aa7eab3e2
commit 881e82e3fa
4 changed files with 13 additions and 102 deletions
Download patch file Download diff file Expand all files Collapse all files

81
src/test/get_consequences.cpp
View file

@ -51,85 +51,8 @@ static void test1() {
std::cout << conseq << "\n";
}
static void test2() {
ast_manager m;
reg_decl_plugins(m);
bv_util bv(m);
datatype_util dtutil(m);
params_ref p;
datatype_decl_plugin & dt = *(static_cast<datatype_decl_plugin*>(m.get_plugin(m.get_family_id("datatype"))));
sort_ref_vector new_sorts(m);
constructor_decl* R = mk_constructor_decl(symbol("R"), symbol("is-R"), 0, 0);
constructor_decl* G = mk_constructor_decl(symbol("G"), symbol("is-G"), 0, 0);
constructor_decl* B = mk_constructor_decl(symbol("B"), symbol("is-B"), 0, 0);
constructor_decl* constrs[3] = { R, G, B };
datatype_decl * enum_sort = mk_datatype_decl(symbol("RGB"), 3, constrs);
VERIFY(dt.mk_datatypes(1, &enum_sort, new_sorts));
del_constructor_decls(3, constrs);
sort* rgb = new_sorts[0].get();
expr_ref x = mk_const(m, "x", rgb), y = mk_const(m, "y", rgb), z = mk_const(m, "z", rgb);
ptr_vector<func_decl> const& enums = *dtutil.get_datatype_constructors(rgb);
expr_ref r = expr_ref(m.mk_const(enums[0]), m);
expr_ref g = expr_ref(m.mk_const(enums[1]), m);
expr_ref b = expr_ref(m.mk_const(enums[2]), m);
expr_ref val(m);
// Eliminate enumeration data-types:
goal_ref gl = alloc(goal, m);
gl->assert_expr(m.mk_not(m.mk_eq(x, r)));
gl->assert_expr(m.mk_not(m.mk_eq(x, b)));
gl->display(std::cout);
obj_map<func_decl, func_decl*> tr;
obj_map<func_decl, func_decl*> rev_tr;
ref<tactic> dt2bv = mk_dt2bv_tactic(m, p, &tr);
goal_ref_buffer result;
model_converter_ref mc;
proof_converter_ref pc;
expr_dependency_ref core(m);
(*dt2bv)(gl, result, mc, pc, core);
// Collect translations from enumerations to bit-vectors
obj_map<func_decl, func_decl*>::iterator it = tr.begin(), end = tr.end();
for (; it != end; ++it) {
rev_tr.insert(it->m_value, it->m_key);
}
// Create bit-vector implication problem
val = m.mk_const(tr.find(to_app(x)->get_decl()));
std::cout << val << "\n";
ptr_vector<expr> fmls;
result[0]->get_formulas(fmls);
ref<solver> solver = mk_inc_sat_solver(m, p);
for (unsigned i = 0; i < fmls.size(); ++i) {
solver->assert_expr(fmls[i]);
}
expr_ref_vector asms(m), vars(m), conseq(m);
vars.push_back(val);
// retrieve consequences
solver->get_consequences(asms, vars, conseq);
// Convert consequences over bit-vectors to enumeration types.
std::cout << conseq << "\n";
for (unsigned i = 0; i < conseq.size(); ++i) {
expr* a, *b, *u, *v;
func_decl* f;
rational num;
unsigned bvsize;
VERIFY(m.is_implies(conseq[i].get(), a, b));
if (m.is_eq(b, u, v) && rev_tr.find(to_app(u)->get_decl(), f) && bv.is_numeral(v, num, bvsize)) {
SASSERT(num.is_unsigned());
expr_ref head(m);
head = m.mk_eq(m.mk_const(f), m.mk_const(enums[num.get_unsigned()]));
conseq[i] = m.mk_implies(a, head);
}
}
std::cout << conseq << "\n";
}
void test3() {
void test2() {
ast_manager m;
reg_decl_plugins(m);
bv_util bv(m);
@ -189,6 +112,4 @@ void test3() {
void tst_get_consequences() {
test1();
test2();
test3();
}