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SMV: bitwise negation operator #1383

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Merged
merged 1 commit into from
Nov 3, 2025
Merged

SMV: bitwise negation operator #1383

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4 changes: 2 additions & 2 deletions regression/smv/word/bitwise1.desc
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Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
CORE
bitwise1.smv

^\[.*\] !\(0ud8_123 = 0ud8_132\): PROVED .*$
^\[.*\] !\(0sd8_123 = -0sd8_124\): PROVED .*$
^\[.*\] \(!0ud8_123\) = 0ud8_132: PROVED .*$
^\[.*\] \(!0sd8_123\) = -0sd8_124: PROVED .*$
^\[.*\] \(0ud8_123 \& 0ud8_7\) = 0ud8_3: PROVED .*$
^\[.*\] \(0ud8_123 \| 0ud8_7\) = 0ud8_127: PROVED .*$
^\[.*\] \(0ud8_123 xor 0ud8_7\) = 0ud8_124: PROVED .*$
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4 changes: 2 additions & 2 deletions regression/smv/word/bitwise1.smv
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Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
MODULE main

-- negation
SPEC !uwconst(123, 8) = uwconst(132, 8)
SPEC !swconst(123, 8) = swconst(-124, 8)
SPEC (!uwconst(123, 8)) = uwconst(132, 8)
SPEC (!swconst(123, 8)) = swconst(-124, 8)

-- and
SPEC (uwconst(123, 8) & uwconst(7, 8)) = uwconst(3, 8)
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4 changes: 2 additions & 2 deletions src/smvlang/expr2smv.cpp
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Expand Up @@ -771,8 +771,8 @@ expr2smvt::resultt expr2smvt::convert_rec(const exprt &src)
else if(src.id()==ID_notequal)
return convert_binary(to_notequal_expr(src), "!=", precedencet::REL);

else if(src.id()==ID_not)
return convert_unary(to_not_expr(src), "!", precedencet::NOT);
else if(src.id() == ID_not || src.id() == ID_bitnot)
return convert_unary(to_unary_expr(src), "!", precedencet::NOT);

else if(src.id() == ID_and || src.id() == ID_bitand)
return convert_binary_associative(src, "&", precedencet::AND);
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