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fix #2773 fix #2774

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-12-02 15:21:59 -08:00
parent 1eab774b91
commit 37a4dd68d0
8 changed files with 48 additions and 31 deletions
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12
src/smt/theory_utvpi_def.h
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@ -259,7 +259,14 @@ namespace smt {
template<typename Ext>
void theory_utvpi<Ext>::init(context* ctx) {
theory::init(ctx);
m_zero = mk_var(ctx->mk_enode(a.mk_numeral(rational(0), true), false, false, true));
m_zero = null_theory_var;
}
template<typename Ext>
void theory_utvpi<Ext>::init_zero() {
if (m_zero == null_theory_var) {
m_zero = mk_var(get_context().mk_enode(a.mk_numeral(rational(0), true), false, false, true));
}
}
/**
@ -553,7 +560,7 @@ namespace smt {
theory_var v = null_theory_var;
context& ctx = get_context();
if (r.is_zero()) {
v = m_zero;
v = get_zero(n);
}
else if (ctx.e_internalized(n)) {
enode* e = ctx.get_enode(n);
@ -775,6 +782,7 @@ namespace smt {
m_factory = alloc(arith_factory, get_manager());
m.register_factory(m_factory);
enforce_parity();
init_zero();
m_graph.set_to_zero(to_var(m_zero), neg(to_var(m_zero)));
compute_delta();
DEBUG_CODE(model_validate(););