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Verification; Fix false positive in while loops

This commit is contained in:
Daniel Marjamäki 2019-12-31 22:32:16 +01:00
parent 043634be27
commit d4ec8075a4
2 changed files with 4 additions and 4 deletions
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2
lib/exprengine.cpp
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@ -1563,7 +1563,7 @@ static void execute(const Token *start, const Token *end, Data &data)
if (changedVariables.find(varid) != changedVariables.end())
continue;
changedVariables.insert(varid);
data.assignValue(tok2, varid, createVariableValue(*tok2->astOperand1()->variable(), data));
data.assignValue(tok2, varid, getValueRangeFromValueType(data.getNewSymbolName(), tok2->astOperand1()->valueType(), *data.settings));
} else if (Token::Match(tok2, "++|--") && tok2->astOperand1() && tok2->astOperand1()->variable()) {
// give variable "any" value
const Token *vartok = tok2->astOperand1();

6
test/testexprengine.cpp
View File

@ -318,9 +318,9 @@ private:
" x = x + 34;\n"
" x == 340;\n"
"}";
ASSERT_EQUALS("(declare-fun $4 () Int)\n"
"(assert (and (>= $4 (- 2147483648)) (<= $4 2147483647)))\n"
"(assert (= (+ $4 34) 340))\n"
ASSERT_EQUALS("(declare-fun $2 () Int)\n"
"(assert (and (>= $2 (- 2147483648)) (<= $2 2147483647)))\n"
"(assert (= (+ $2 34) 340))\n"
"z3::sat",
expr(code, "=="));
}