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SMT2: tolerate non-constant array indices when parsing array models #9063

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SMT2: tolerate non-constant array indices when parsing array models #9063

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4 changes: 4 additions & 0 deletions src/solvers/smt2/smt2_conv.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -637,6 +637,10 @@ void smt2_convt::walk_array_tree(
// Recurse
walk_array_tree(operands_map, src.get_sub()[1], type);
const auto index_expr = parse_rec(src.get_sub()[2], type.size().type());
if(!index_expr.is_constant())
// Non-constant index (e.g. an unbounded / non-integer-keyed heap array
// from Strata's `Map Ref _`): skip this store in model reconstruction.
return;
Comment on lines +640 to +643
Comment on lines +640 to +643
const constant_exprt index_constant = to_constant_expr(index_expr);
mp_integer tempint;
bool failure = to_integer(index_constant, tempint);
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