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reset max unfolding literal on backtrack
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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@ -5550,6 +5550,7 @@ void theory_seq::add_theory_assumptions(expr_ref_vector & assumptions) {
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if (m_util.has_re()) {
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expr_ref dlimit(m);
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dlimit = mk_max_unfolding_depth();
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m_trail_stack.push(value_trail<theory_seq, literal>(m_max_unfolding_lit));
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m_max_unfolding_lit = mk_literal(dlimit);
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assumptions.push_back(dlimit);
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}
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