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fix detection of bounds under conjunctions. Issue #971

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-04-11 07:40:09 +08:00
parent 80c10d5833
commit 67513a2cf5
3 changed files with 73 additions and 28 deletions
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19
src/tactic/portfolio/pb2bv_solver.cpp
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@ -27,9 +27,9 @@ Notes:
class pb2bv_solver : public solver_na2as {
ast_manager& m;
params_ref m_params;
expr_ref_vector m_assertions;
ref<solver> m_solver;
pb2bv_rewriter m_rewriter;
mutable expr_ref_vector m_assertions;
mutable ref<solver> m_solver;
mutable pb2bv_rewriter m_rewriter;
public:
@ -107,8 +107,19 @@ public:
filter(mdl, 0);
}
virtual unsigned get_num_assertions() const {
flush_assertions();
return m_solver->get_num_assertions();
}
virtual expr * get_assertion(unsigned idx) const {
flush_assertions();
return m_solver->get_assertion(idx);
}
private:
void flush_assertions() {
void flush_assertions() const {
proof_ref proof(m);
expr_ref fml(m);
expr_ref_vector fmls(m);