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add hook for induction

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This commit is contained in:
Nikolaj Bjorner 2020-04-29 12:06:53 -07:00
parent fd911a5563
commit 9f6a733ff6
3 changed files with 20 additions and 11 deletions
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24
src/smt/smt_context.cpp
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@ -270,18 +270,14 @@ namespace smt {
}
d.m_phase_available = true;
d.m_phase = !l.sign();
CTRACE("assign_core", l.var() == 13, tout << (decision?"decision: ":"propagating: ") << l << " ";
/*display_literal(tout, l);*/
tout << "relevant: " << is_relevant_core(l) << " level: " << m_scope_lvl << " is atom " << d.is_atom() << "\n";
/*display(tout, j);*/
);
TRACE("assign_core", tout << (decision?"decision: ":"propagating: ") << l << " ";
display_literal_smt2(tout, l) << "\n";
tout << "relevant: " << is_relevant_core(l) << " level: " << m_scope_lvl << " is atom " << d.is_atom() << "\n";
/*display(tout, j);*/
);
TRACE("phase_selection", tout << "saving phase, is_pos: " << d.m_phase << " l: " << l << "\n";);
CTRACE("relevancy", l.var() == 13,
tout << "is_atom: " << d.is_atom() << " is relevant: "
<< is_relevant_core(l) << " relevancy-lvl: " << relevancy_lvl() << "\n";);
if (d.is_atom() && (relevancy_lvl() == 0 || (relevancy_lvl() == 1 && !d.is_quantifier()) || is_relevant_core(l))) {
CTRACE("assign_core", l.var() == 13, tout << "propagation queue\n";);
m_atom_propagation_queue.push_back(l);
}
@ -1655,6 +1651,16 @@ namespace smt {
!m_th_diseq_propagation_queue.empty();
}
/**
\brief retrieve facilities for creating induction lemmas.
*/
induction& context::get_induction() {
if (!m_induction) {
m_induction = alloc(induction, *this, get_manager());
}
return *m_induction;
}
/**
\brief unit propagation.
Cancelation is not safe during propagation at base level because