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add facility to add lemmas

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-06-12 19:44:02 -07:00
parent af6ebbcd92
commit ce592d7716
16 changed files with 111 additions and 21 deletions
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18
src/sat/sat_solver/inc_sat_solver.cpp
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@ -241,6 +241,16 @@ public:
assert_expr(t);
}
}
virtual void assert_lemma(expr* e) {
dep2asm_t dep2asm;
goal_ref g = alloc(goal, m, true, false); // models, maybe cores are enabled
for (unsigned i = m_fmls_head ; i < m_fmls.size(); ++i) {
g->assert_expr(m_fmls[i].get());
}
VERIFY(l_undef != internalize_goal(g, dep2asm, true));
}
virtual ast_manager& get_manager() const { return m; }
virtual void assert_expr(expr * t) {
m_internalized = false;
@ -501,7 +511,7 @@ public:
private:
lbool internalize_goal(goal_ref& g, dep2asm_t& dep2asm) {
lbool internalize_goal(goal_ref& g, dep2asm_t& dep2asm, bool is_lemma) {
m_mc.reset();
m_pc.reset();
m_dep_core.reset();
@ -527,7 +537,7 @@ private:
g = m_subgoals[0];
expr_ref_vector atoms(m);
TRACE("sat", g->display_with_dependencies(tout););
m_goal2sat(*g, m_params, m_solver, m_map, dep2asm, true);
m_goal2sat(*g, m_params, m_solver, m_map, dep2asm, true, is_lemma);
m_goal2sat.get_interpreted_atoms(atoms);
if (!atoms.empty()) {
std::stringstream strm;
@ -552,7 +562,7 @@ private:
for (unsigned i = 0; i < get_num_assumptions(); ++i) {
g->assert_expr(get_assumption(i), m.mk_leaf(get_assumption(i)));
}
lbool res = internalize_goal(g, dep2asm);
lbool res = internalize_goal(g, dep2asm, false);
if (res == l_true) {
extract_assumptions(sz, asms, dep2asm);
}
@ -673,7 +683,7 @@ private:
for (unsigned i = m_fmls_head ; i < m_fmls.size(); ++i) {
g->assert_expr(m_fmls[i].get());
}
lbool res = internalize_goal(g, dep2asm);
lbool res = internalize_goal(g, dep2asm, false);
if (res != l_undef) {
m_fmls_head = m_fmls.size();
}