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cleanup bit2bool from models #3847

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-04-08 03:05:11 -07:00
parent 5c9fd90031
commit 8e6bb30c82
3 changed files with 15 additions and 22 deletions
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6
src/model/model.cpp
View file

@ -22,6 +22,7 @@ Revision History:
#include "ast/rewriter/var_subst.h"
#include "ast/rewriter/th_rewriter.h"
#include "ast/array_decl_plugin.h"
#include "ast/bv_decl_plugin.h"
#include "ast/well_sorted.h"
#include "ast/used_symbols.h"
#include "ast/for_each_expr.h"
@ -410,6 +411,7 @@ expr_ref model::cleanup_expr(top_sort& ts, expr* e, unsigned current_partition)
ptr_buffer<expr> args;
todo.push_back(e);
array_util autil(m);
bv_util bv(m);
func_interp* fi = nullptr;
unsigned pid = 0;
expr_ref new_t(m);
@ -457,6 +459,10 @@ expr_ref model::cleanup_expr(top_sort& ts, expr* e, unsigned current_partition)
var_subst vs(m, false);
new_t = vs(fi->get_interp(), args.size(), args.c_ptr());
}
else if (bv.is_bit2bool(t)) {
unsigned idx = f->get_parameter(0).get_int();
new_t = m.mk_eq(bv.mk_extract(idx, idx, args[0]), bv.mk_numeral(1, 1));
}
#if 0
else if (is_uninterp_const(a) && !get_const_interp(f)) {
new_t = get_some_value(f->get_range());

8
src/muz/spacer/spacer_context.cpp
View file

@ -1121,13 +1121,7 @@ expr_ref pred_transformer::get_cover_delta(func_decl* p_orig, int level)
// adjust result according to model converter.
unsigned arity = m_head->get_arity();
model_ref md = alloc(model, m);
if (arity == 0) {
md->register_decl(m_head, result);
} else {
func_interp* fi = alloc(func_interp, m, arity);
fi->set_else(result);
md->register_decl(m_head, fi);
}
md->register_decl(m_head, result);
model_converter_ref mc = ctx.get_model_converter();
apply(mc, md);
if (p_orig->get_arity() == 0) {

23
src/muz/spacer/spacer_manager.cpp
View file

@ -73,7 +73,7 @@ expr_ref inductive_property::fixup_clauses(expr* fml) const
expr_ref result(m);
flatten_and(fml, conjs);
for (unsigned i = 0; i < conjs.size(); ++i) {
conjs[i] = fixup_clause(conjs[i].get());
conjs[i] = fixup_clause(conjs.get(i));
}
bool_rewriter(m).mk_and(conjs.size(), conjs.c_ptr(), result);
return result;
@ -83,19 +83,17 @@ std::string inductive_property::to_string() const
{
std::stringstream stm;
model_ref md;
expr_ref result(m);
to_model(md);
model_smt2_pp(stm, m, *md.get(), 0);
stm << *md;
return stm.str();
}
void inductive_property::to_model(model_ref& md) const
{
void inductive_property::to_model(model_ref& md) const {
md = alloc(model, m);
vector<relation_info> const& rs = m_relation_info;
expr_ref_vector conjs(m);
for (unsigned i = 0; i < rs.size(); ++i) {
relation_info ri(rs[i]);
for (relation_info const& ri_ : rs) {
relation_info ri(ri_);
func_decl * pred = ri.m_pred;
expr_ref prop = fixup_clauses(ri.m_body);
func_decl_ref_vector const& sig = ri.m_vars;
@ -105,16 +103,11 @@ void inductive_property::to_model(model_ref& md) const
sig_vars.push_back(m.mk_const(sig[sig.size() - j - 1]));
}
expr_abstract(m, 0, sig_vars.size(), sig_vars.c_ptr(), prop, q);
if (sig.empty()) {
md->register_decl(pred, q);
} else {
func_interp* fi = alloc(func_interp, m, sig.size());
fi->set_else(q);
md->register_decl(pred, fi);
}
md->register_decl(pred, q);
}
TRACE("spacer", model_smt2_pp(tout, m, *md, 0););
TRACE("spacer", tout << *md;);
apply(const_cast<model_converter_ref&>(m_mc), md);
md->compress();
}
expr_ref inductive_property::to_expr() const