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Add invariant that multiplication uses operands of the same size #8241

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Apr 20, 2024
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Add invariant that multiplication uses operands of the same size #8241

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5 changes: 5 additions & 0 deletions src/solvers/flattening/bv_utils.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1071,6 +1071,11 @@ bvt bv_utilst::multiplier(
const bvt &op1,
representationt rep)
{
// We determine the result size from the operand size, and the implementation
// liberally swaps the operands, so we need to arrive at the same size
// whatever the order of the operands.
PRECONDITION(op0.size() == op1.size());

switch(rep)
{
case representationt::SIGNED: return signed_multiplier(op0, op1);
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