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[WIP] Try to replace "recursive reusage" of variables by seq.slice

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This commit is contained in:
CEisenhofer 2026-05-20 17:24:57 +02:00
parent dd00dd7362
commit 315a09aea8
7 changed files with 88 additions and 156 deletions
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6
src/smt/seq/seq_parikh.cpp
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@ -210,11 +210,11 @@ namespace seq {
expr_ref stride_expr(a.mk_int(stride), m);
expr_ref stride_k(a.mk_mul(stride_expr, k_var), m);
expr_ref rhs(a.mk_add(min_expr, stride_k), m);
out.push_back(constraint(m.mk_eq(len_str, rhs), mem.m_dep, m));
out.push_back(constraint(m.mk_eq(len_str, rhs), mem.m_dep, false, m));
// Constraint 2: k ≥ 0
expr_ref zero(a.mk_int(0), m);
out.push_back(constraint(a.mk_ge(k_var, zero), mem.m_dep, m));
out.push_back(constraint(a.mk_ge(k_var, zero), mem.m_dep, false, m));
// Constraint 3 (optional): k ≤ max_k when max_len is bounded.
// max_k = floor((max_len - min_len) / stride)
@ -226,7 +226,7 @@ namespace seq {
unsigned range = max_len - min_len;
unsigned max_k = range / stride;
expr_ref max_k_expr(a.mk_int(max_k), m);
out.push_back(constraint(a.mk_le(k_var, max_k_expr), mem.m_dep, m));
out.push_back(constraint(a.mk_le(k_var, max_k_expr), mem.m_dep, false, m));
}
}