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Merge pull request #4645 from ethereum/smt-syntax-tests

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Move SMT tests to use isoltest
This commit is contained in:
Alex Beregszaszi 2018-11-22 13:59:23 +00:00 committed by GitHub
commit be321090e6
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GPG Key ID: 4AEE18F83AFDEB23
47 changed files with 491 additions and 593 deletions
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593
test/libsolidity/SMTChecker.cpp
View File

@ -56,599 +56,6 @@ protected:
BOOST_FIXTURE_TEST_SUITE(SMTChecker, SMTCheckerFramework)
BOOST_AUTO_TEST_CASE(smoke_test)
{
string text = R"(
contract C { }
)";
CHECK_SUCCESS_NO_WARNINGS(text);
}
BOOST_AUTO_TEST_CASE(simple_overflow)
{
string text = R"(
contract C {
function f(uint a, uint b) public pure returns (uint) { return a + b; }
}
)";
CHECK_WARNING(text, "Overflow (resulting value larger than");
}
BOOST_AUTO_TEST_CASE(warn_on_typecast)
{
string text = R"(
contract C {
function f() public pure returns (uint) {
return uint8(1);
}
}
)";
CHECK_WARNING(text, "Assertion checker does not yet implement this expression.");
}
BOOST_AUTO_TEST_CASE(warn_on_struct)
{
string text = R"(
pragma experimental ABIEncoderV2;
contract C {
struct A { uint a; uint b; }
function f() public pure returns (A memory) {
return A({ a: 1, b: 2 });
}
}
)";
CHECK_WARNING_ALLOW_MULTI(text, (vector<string>{
"Experimental feature",
"Assertion checker does not yet implement this expression.",
"Assertion checker does not yet support the type of this variable."
}));
}
BOOST_AUTO_TEST_CASE(simple_assert)
{
string text = R"(
contract C {
function f(uint a) public pure { assert(a == 2); }
}
)";
CHECK_WARNING(text, "Assertion violation happens here");
}
BOOST_AUTO_TEST_CASE(simple_assert_with_require)
{
string text = R"(
contract C {
function f(uint a) public pure { require(a < 10); assert(a < 20); }
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
}
BOOST_AUTO_TEST_CASE(assignment_in_declaration)
{
string text = R"(
contract C {
function f() public pure { uint a = 2; assert(a == 2); }
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
}
BOOST_AUTO_TEST_CASE(branches_merge_variables)
{
// Branch does not touch variable a
string text = R"(
contract C {
function f(uint x) public pure {
uint a = 3;
if (x > 10) {
}
assert(a == 3);
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
// Positive branch touches variable a, but assertion should still hold.
text = R"(
contract C {
function f(uint x) public pure {
uint a = 3;
if (x > 10) {
a = 3;
}
assert(a == 3);
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
// Negative branch touches variable a, but assertion should still hold.
text = R"(
contract C {
function f(uint x) public pure {
uint a = 3;
if (x > 10) {
} else {
a = 3;
}
assert(a == 3);
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
// Variable is not merged, if it is only read.
text = R"(
contract C {
function f(uint x) public pure {
uint a = 3;
if (x > 10) {
assert(a == 3);
} else {
assert(a == 3);
}
assert(a == 3);
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
// Variable is reset in both branches
text = R"(
contract C {
function f(uint x) public pure {
uint a = 2;
if (x > 10) {
a = 3;
} else {
a = 3;
}
assert(a == 3);
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
// Variable is reset in both branches
text = R"(
contract C {
function f(uint x) public pure {
uint a = 2;
if (x > 10) {
a = 3;
} else {
a = 4;
}
assert(a >= 3);
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
}
BOOST_AUTO_TEST_CASE(branches_assert_condition)
{
string text = R"(
contract C {
function f(uint x) public pure {
if (x > 10) {
assert(x > 9);
}
else
{
assert(x < 11);
}
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
text = R"(
contract C {
function f(uint x) public pure {
if (x > 10) {
assert(x > 9);
}
else if (x > 2)
{
assert(x <= 10 && x > 2);
}
else
{
assert(0 <= x && x <= 2);
}
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
}
BOOST_AUTO_TEST_CASE(ways_to_merge_variables)
{
string text = R"(
contract C {
function f(uint x) public pure {
uint a = 3;
if (x > 10) {
a++;
}
assert(a == 3);
}
}
)";
CHECK_WARNING(text, "Assertion violation happens here");
text = R"(
contract C {
function f(uint x) public pure {
uint a = 3;
if (x > 10) {
++a;
}
assert(a == 3);
}
}
)";
CHECK_WARNING(text, "Assertion violation happens here");
text = R"(
contract C {
function f(uint x) public pure {
uint a = 3;
if (x > 10) {
a = 5;
}
assert(a == 3);
}
}
)";
CHECK_WARNING(text, "Assertion violation happens here");
}
BOOST_AUTO_TEST_CASE(bool_simple)
{
string text = R"(
contract C {
function f(bool x) public pure {
assert(x);
}
}
)";
CHECK_WARNING(text, "Assertion violation happens here");
text = R"(
contract C {
function f(bool x, bool y) public pure {
assert(x == y);
}
}
)";
CHECK_WARNING(text, "Assertion violation happens here");
text = R"(
contract C {
function f(bool x, bool y) public pure {
bool z = x || y;
assert(!(x && y) || z);
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
text = R"(
contract C {
function f(bool x) public pure {
if (x) {
assert(x);
} else {
assert(!x);
}
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
text = R"(
contract C {
function f(bool x) public pure {
bool y = x;
assert(x == y);
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
text = R"(
contract C {
function f(bool x) public pure {
require(x);
bool y;
y = false;
assert(x || y);
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
}
BOOST_AUTO_TEST_CASE(bool_int_mixed)
{
string text = R"(
contract C {
function f(bool x) public pure {
uint a;
if (x)
a = 1;
assert(!x || a > 0);
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
text = R"(
contract C {
function f(bool x, uint a) public pure {
require(!x || a > 0);
uint b = a;
assert(!x || b > 0);
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
text = R"(
contract C {
function f(bool x, bool y) public pure {
uint a;
if (x) {
if (y) {
a = 0;
} else {
a = 1;
}
} else {
if (y) {
a = 1;
} else {
a = 0;
}
}
bool xor_x_y = (x && !y) || (!x && y);
assert(!xor_x_y || a > 0);
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
}
BOOST_AUTO_TEST_CASE(storage_value_vars)
{
string text = R"(
contract C
{
address a;
bool b;
uint c;
function f(uint x) public {
if (x == 0)
{
a = 0x0000000000000000000000000000000000000100;
b = true;
}
else
{
a = 0x0000000000000000000000000000000000000200;
b = false;
}
assert(a > 0x0000000000000000000000000000000000000000 && b);
}
}
)";
CHECK_WARNING(text, "Assertion violation happens here");
text = R"(
contract C
{
address a;
bool b;
uint c;
function f() public view {
assert(c > 0);
}
}
)";
CHECK_WARNING(text, "Assertion violation happens here");
text = R"(
contract C
{
function f(uint x) public {
if (x == 0)
{
a = 0x0000000000000000000000000000000000000100;
b = true;
}
else
{
a = 0x0000000000000000000000000000000000000200;
b = false;
}
assert(b == (a < 0x0000000000000000000000000000000000000200));
}
function g() public view {
require(a < 0x0000000000000000000000000000000000000100);
assert(c >= 0);
}
address a;
bool b;
uint c;
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
text = R"(
contract C
{
function f() public view {
assert(c > 0);
}
uint c;
}
)";
CHECK_WARNING(text, "Assertion violation happens here");
}
BOOST_AUTO_TEST_CASE(while_loop_simple)
{
// Check that variables are cleared
string text = R"(
contract C {
function f(uint x) public pure {
x = 2;
while (x > 1) {
x = 2;
}
assert(x == 2);
}
}
)";
CHECK_WARNING(text, "Assertion violation happens here");
// Check that condition is assumed.
text = R"(
contract C {
function f(uint x) public pure {
while (x == 2) {
assert(x == 2);
}
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
// Check that condition is not assumed after the body anymore
text = R"(
contract C {
function f(uint x) public pure {
while (x == 2) {
}
assert(x == 2);
}
}
)";
CHECK_WARNING(text, "Assertion violation happens here");
// Check that negation of condition is not assumed after the body anymore
text = R"(
contract C {
function f(uint x) public pure {
while (x == 2) {
}
assert(x != 2);
}
}
)";
CHECK_WARNING(text, "Assertion violation happens here");
// Check that side-effects of condition are taken into account
text = R"(
contract C {
function f(uint x, uint y) public pure {
x = 7;
while ((x = y) > 0) {
}
assert(x == 7);
}
}
)";
CHECK_WARNING(text, "Assertion violation happens here");
}
BOOST_AUTO_TEST_CASE(constant_condition)
{
string text = R"(
contract C {
function f(uint x) public pure {
if (x >= 0) { revert(); }
}
}
)";
CHECK_WARNING_ALLOW_MULTI(text, (vector<string>{
"Condition is always true",
"Assertion checker does not yet implement this type of function call"
}));
text = R"(
contract C {
function f(uint x) public pure {
if (x >= 10) { if (x < 10) { revert(); } }
}
}
)";
CHECK_WARNING_ALLOW_MULTI(text, (vector<string>{
"Condition is always false",
"Assertion checker does not yet implement this type of function call"
}));
// a plain literal constant is fine
text = R"(
contract C {
function f(uint) public pure {
if (true) { revert(); }
}
}
)";
CHECK_WARNING(text, "Assertion checker does not yet implement this type of function call");
}
BOOST_AUTO_TEST_CASE(for_loop)
{
string text = R"(
contract C {
function f(uint x) public pure {
require(x == 2);
for (;;) {}
assert(x == 2);
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
text = R"(
contract C {
function f(uint x) public pure {
for (; x == 2; ) {
assert(x == 2);
}
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
text = R"(
contract C {
function f(uint x) public pure {
for (uint y = 2; x < 10; ) {
assert(y == 2);
}
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
text = R"(
contract C {
function f(uint x) public pure {
for (uint y = 2; x < 10; y = 3) {
assert(y == 2);
}
}
}
)";
CHECK_WARNING(text, "Assertion violation");
text = R"(
contract C {
function f(uint x) public pure {
uint y;
for (y = 2; x < 10; ) {
y = 3;
}
assert(y == 3);
}
}
)";
CHECK_WARNING(text, "Assertion violation");
text = R"(
contract C {
function f(uint x) public pure {
uint y;
for (y = 2; x < 10; ) {
y = 3;
}
assert(y == 2);
}
}
)";
CHECK_WARNING(text, "Assertion violation");
}
BOOST_AUTO_TEST_CASE(division)
{
string text = R"(

14
test/libsolidity/smtCheckerTests/complex/warn_on_struct.sol Normal file
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@ -0,0 +1,14 @@
pragma experimental SMTChecker;
contract C {
struct A { uint a; uint b; }
function f() public pure returns (uint) {
A memory a = A({ a: 1, b: 2 });
}
}
// ----
// Warning: (133-143): Unused local variable.
// Warning: (133-143): Assertion checker does not yet support the type of this variable.
// Warning: (146-163): Assertion checker does not yet implement this expression.
// Warning: (146-163): Internal error: Expression undefined for SMT solver.
// Warning: (146-163): Assertion checker does not yet implement this type.

8
test/libsolidity/smtCheckerTests/complex/warn_on_typecast.sol Normal file
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@ -0,0 +1,8 @@
pragma experimental SMTChecker;
contract C {
function f() public pure returns (uint) {
return uint8(1);
}
}
// ----
// Warning: (106-114): Assertion checker does not yet implement this expression.

4
test/libsolidity/smtCheckerTests/control_flow/assignment_in_declaration.sol Normal file
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@ -0,0 +1,4 @@
pragma experimental SMTChecker;
contract C {
function f() public pure { uint a = 2; assert(a == 2); }
}

12
test/libsolidity/smtCheckerTests/control_flow/branches_assert_condition_1.sol Normal file
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@ -0,0 +1,12 @@
pragma experimental SMTChecker;
contract C {
function f(uint x) public pure {
if (x > 10) {
assert(x > 9);
}
else
{
assert(x < 11);
}
}
}

16
test/libsolidity/smtCheckerTests/control_flow/branches_assert_condition_2.sol Normal file
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@ -0,0 +1,16 @@
pragma experimental SMTChecker;
contract C {
function f(uint x) public pure {
if (x > 10) {
assert(x > 9);
}
else if (x > 2)
{
assert(x <= 10 && x > 2);
}
else
{
assert(0 <= x && x <= 2);
}
}
}

10
test/libsolidity/smtCheckerTests/control_flow/branches_merge_variables_1.sol Normal file
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@ -0,0 +1,10 @@
pragma experimental SMTChecker;
// Branch does not touch variable a
contract C {
function f(uint x) public pure {
uint a = 3;
if (x > 10) {
}
assert(a == 3);
}
}

11
test/libsolidity/smtCheckerTests/control_flow/branches_merge_variables_2.sol Normal file
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@ -0,0 +1,11 @@
pragma experimental SMTChecker;
// Positive branch touches variable a, but assertion should still hold.
contract C {
function f(uint x) public pure {
uint a = 3;
if (x > 10) {
a = 3;
}
assert(a == 3);
}
}

12
test/libsolidity/smtCheckerTests/control_flow/branches_merge_variables_3.sol Normal file
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@ -0,0 +1,12 @@
pragma experimental SMTChecker;
// Negative branch touches variable a, but assertion should still hold.
contract C {
function f(uint x) public pure {
uint a = 3;
if (x > 10) {
} else {
a = 3;
}
assert(a == 3);
}
}

13
test/libsolidity/smtCheckerTests/control_flow/branches_merge_variables_4.sol Normal file
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@ -0,0 +1,13 @@
pragma experimental SMTChecker;
// Variable is not merged, if it is only read.
contract C {
function f(uint x) public pure {
uint a = 3;
if (x > 10) {
assert(a == 3);
} else {
assert(a == 3);
}
assert(a == 3);
}
}

13
test/libsolidity/smtCheckerTests/control_flow/branches_merge_variables_5.sol Normal file
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@ -0,0 +1,13 @@
pragma experimental SMTChecker;
// Variable is reset in both branches
contract C {
function f(uint x) public pure {
uint a = 2;
if (x > 10) {
a = 3;
} else {
a = 3;
}
assert(a == 3);
}
}

13
test/libsolidity/smtCheckerTests/control_flow/branches_merge_variables_6.sol Normal file
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@ -0,0 +1,13 @@
pragma experimental SMTChecker;
// Variable is reset in both branches
contract C {
function f(uint x) public pure {
uint a = 2;
if (x > 10) {
a = 3;
} else {
a = 4;
}
assert(a >= 3);
}
}

12
test/libsolidity/smtCheckerTests/control_flow/ways_to_merge_variables_1.sol Normal file
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@ -0,0 +1,12 @@
pragma experimental SMTChecker;
contract C {
function f(uint x) public pure {
uint a = 3;
if (x > 10) {
a++;
}
assert(a == 3);
}
}
// ----
// Warning: (159-173): Assertion violation happens here

12
test/libsolidity/smtCheckerTests/control_flow/ways_to_merge_variables_2.sol Normal file
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@ -0,0 +1,12 @@
pragma experimental SMTChecker;
contract C {
function f(uint x) public pure {
uint a = 3;
if (x > 10) {
++a;
}
assert(a == 3);
}
}
// ----
// Warning: (159-173): Assertion violation happens here

12
test/libsolidity/smtCheckerTests/control_flow/ways_to_merge_variables_3.sol Normal file
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@ -0,0 +1,12 @@
pragma experimental SMTChecker;
contract C {
function f(uint x) public pure {
uint a = 3;
if (x > 10) {
a = 5;
}
assert(a == 3);
}
}
// ----
// Warning: (161-175): Assertion violation happens here

13
test/libsolidity/smtCheckerTests/functions/function_call_does_not_clear_local_vars.sol Normal file
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@ -0,0 +1,13 @@
pragma experimental SMTChecker;
contract C {
function f() public {
uint a = 3;
this.f();
assert(a == 3);
f();
assert(a == 3);
}
}
// ----
// Warning: (99-107): Assertion checker does not yet implement this type of function call.
// Warning: (141-144): Assertion checker does not support recursive function calls.

8
test/libsolidity/smtCheckerTests/loops/for_loop_1.sol Normal file
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@ -0,0 +1,8 @@
pragma experimental SMTChecker;
contract C {
function f(uint x) public pure {
require(x == 2);
for (;;) {}
assert(x == 2);
}
}

8
test/libsolidity/smtCheckerTests/loops/for_loop_2.sol Normal file
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@ -0,0 +1,8 @@
pragma experimental SMTChecker;
contract C {
function f(uint x) public pure {
for (; x == 2; ) {
assert(x == 2);
}
}
}

8
test/libsolidity/smtCheckerTests/loops/for_loop_3.sol Normal file
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@ -0,0 +1,8 @@
pragma experimental SMTChecker;
contract C {
function f(uint x) public pure {
for (uint y = 2; x < 10; ) {
assert(y == 2);
}
}
}

10
test/libsolidity/smtCheckerTests/loops/for_loop_4.sol Normal file
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@ -0,0 +1,10 @@
pragma experimental SMTChecker;
contract C {
function f(uint x) public pure {
for (uint y = 2; x < 10; y = 3) {
assert(y == 2);
}
}
}
// ----
// Warning: (136-150): Assertion violation happens here

12
test/libsolidity/smtCheckerTests/loops/for_loop_5.sol Normal file
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@ -0,0 +1,12 @@
pragma experimental SMTChecker;
contract C {
function f(uint x) public pure {
uint y;
for (y = 2; x < 10; ) {
y = 3;
}
assert(y == 3);
}
}
// ----
// Warning: (167-181): Assertion violation happens here\nNote that some information is erased after the execution of loops.\nYou can re-introduce information using require().

12
test/libsolidity/smtCheckerTests/loops/for_loop_6.sol Normal file
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@ -0,0 +1,12 @@
pragma experimental SMTChecker;
contract C {
function f(uint x) public pure {
uint y;
for (y = 2; x < 10; ) {
y = 3;
}
assert(y == 2);
}
}
// ----
// Warning: (167-181): Assertion violation happens here\nNote that some information is erased after the execution of loops.\nYou can re-introduce information using require().

13
test/libsolidity/smtCheckerTests/loops/while_loop_simple_1.sol Normal file
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@ -0,0 +1,13 @@
pragma experimental SMTChecker;
// Check that variables are cleared
contract C {
function f(uint x) public pure {
x = 2;
while (x > 1) {
x = 2;
}
assert(x == 2);
}
}
// ----
// Warning: (194-208): Assertion violation happens here\nNote that some information is erased after the execution of loops.\nYou can re-introduce information using require().

9
test/libsolidity/smtCheckerTests/loops/while_loop_simple_2.sol Normal file
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@ -0,0 +1,9 @@
pragma experimental SMTChecker;
// Check that condition is assumed.
contract C {
function f(uint x) public pure {
while (x == 2) {
assert(x == 2);
}
}
}

11
test/libsolidity/smtCheckerTests/loops/while_loop_simple_3.sol Normal file
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@ -0,0 +1,11 @@
pragma experimental SMTChecker;
// Check that condition is not assumed after the body anymore
contract C {
function f(uint x) public pure {
while (x == 2) {
}
assert(x == 2);
}
}
// ----
// Warning: (187-201): Assertion violation happens here\nNote that some information is erased after the execution of loops.\nYou can re-introduce information using require().

11
test/libsolidity/smtCheckerTests/loops/while_loop_simple_4.sol Normal file
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@ -0,0 +1,11 @@
pragma experimental SMTChecker;
// Check that negation of condition is not assumed after the body anymore
contract C {
function f(uint x) public pure {
while (x == 2) {
}
assert(x != 2);
}
}
// ----
// Warning: (199-213): Assertion violation happens here\nNote that some information is erased after the execution of loops.\nYou can re-introduce information using require().

12
test/libsolidity/smtCheckerTests/loops/while_loop_simple_5.sol Normal file
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@ -0,0 +1,12 @@
pragma experimental SMTChecker;
// Check that side-effects of condition are taken into account
contract C {
function f(uint x, uint y) public pure {
x = 7;
while ((x = y) > 0) {
}
assert(x == 7);
}
}
// ----
// Warning: (216-230): Assertion violation happens here\nNote that some information is erased after the execution of loops.\nYou can re-introduce information using require().

6
test/libsolidity/smtCheckerTests/overflow/simple_overflow.sol Normal file
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@ -0,0 +1,6 @@
pragma experimental SMTChecker;
contract C {
function f(uint a, uint b) public pure returns (uint) { return a + b; }
}
// ----
// Warning: (112-117): Overflow (resulting value larger than 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) happens here

3
test/libsolidity/smtCheckerTests/simple/smoke_test.sol Normal file
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@ -0,0 +1,3 @@
pragma experimental SMTChecker;
contract C {
}

9
test/libsolidity/smtCheckerTests/types/bool_int_mixed_1.sol Normal file
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@ -0,0 +1,9 @@
pragma experimental SMTChecker;
contract C {
function f(bool x) public pure {
uint a;
if(x)
a = 1;
assert(!x || a > 0);
}
}

8
test/libsolidity/smtCheckerTests/types/bool_int_mixed_2.sol Normal file
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@ -0,0 +1,8 @@
pragma experimental SMTChecker;
contract C {
function f(bool x, uint a) public pure {
require(!x || a > 0);
uint b = a;
assert(!x || b > 0);
}
}

21
test/libsolidity/smtCheckerTests/types/bool_int_mixed_3.sol Normal file
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pragma experimental SMTChecker;
contract C {
function f(bool x, bool y) public pure {
uint a;
if (x) {
if (y) {
a = 0;
} else {
a = 1;
}
} else {
if (y) {
a = 1;
} else {
a = 0;
}
}
bool xor_x_y = (x && !y) || (!x && y);
assert(!xor_x_y || a > 0);
}
}

8
test/libsolidity/smtCheckerTests/types/bool_simple_1.sol Normal file
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pragma experimental SMTChecker;
contract C {
function f(bool x) public pure {
assert(x);
}
}
// ----
// Warning: (90-99): Assertion violation happens here

8
test/libsolidity/smtCheckerTests/types/bool_simple_2.sol Normal file
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pragma experimental SMTChecker;
contract C {
function f(bool x, bool y) public pure {
assert(x == y);
}
}
// ----
// Warning: (98-112): Assertion violation happens here

7
test/libsolidity/smtCheckerTests/types/bool_simple_3.sol Normal file
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pragma experimental SMTChecker;
contract C {
function f(bool x, bool y) public pure {
bool z = x || y;
assert(!(x && y) || z);
}
}

10
test/libsolidity/smtCheckerTests/types/bool_simple_4.sol Normal file
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pragma experimental SMTChecker;
contract C {
function f(bool x) public pure {
if(x) {
assert(x);
} else {
assert(!x);
}
}
}

7
test/libsolidity/smtCheckerTests/types/bool_simple_5.sol Normal file
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pragma experimental SMTChecker;
contract C {
function f(bool x) public pure {
bool y = x;
assert(x == y);
}
}

9
test/libsolidity/smtCheckerTests/types/bool_simple_6.sol Normal file
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pragma experimental SMTChecker;
contract C {
function f(bool x) public pure {
require(x);
bool y;
y = false;
assert(x || y);
}
}

22
test/libsolidity/smtCheckerTests/types/storage_value_vars_1.sol Normal file
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pragma experimental SMTChecker;
contract C
{
address a;
bool b;
uint c;
function f(uint x) public {
if (x == 0)
{
a = 0x0000000000000000000000000000000000000100;
b = true;
}
else
{
a = 0x0000000000000000000000000000000000000200;
b = false;
}
assert(a > 0x0000000000000000000000000000000000000000 && b);
}
}
// ----
// Warning: (362-421): Assertion violation happens here

12
test/libsolidity/smtCheckerTests/types/storage_value_vars_2.sol Normal file
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pragma experimental SMTChecker;
contract C
{
address a;
bool b;
uint c;
function f() public view {
assert(c > 0);
}
}
// ----
// Warning: (123-136): Assertion violation happens here

25
test/libsolidity/smtCheckerTests/types/storage_value_vars_3.sol Normal file
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pragma experimental SMTChecker;
contract C
{
function f(uint x) public {
if (x == 0)
{
a = 0x0000000000000000000000000000000000000100;
b = true;
}
else
{
a = 0x0000000000000000000000000000000000000200;
b = false;
}
assert(b == (a < 0x0000000000000000000000000000000000000200));
}
function g() public view {
require(a < 0x0000000000000000000000000000000000000100);
assert(c >= 0);
}
address a;
bool b;
uint c;
}

10
test/libsolidity/smtCheckerTests/types/storage_value_vars_4.sol Normal file
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pragma experimental SMTChecker;
contract C
{
function f() public view {
assert(c > 0);
}
uint c;
}
// ----
// Warning: (84-97): Assertion violation happens here

9
test/libsolidity/smtCheckerTests/verification_target/constant_condition_1.sol Normal file
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pragma experimental SMTChecker;
contract C {
function f(uint x) public pure {
if (x >= 0) { revert(); }
}
}
// ----
// Warning: (94-100): Condition is always true.
// Warning: (104-112): Assertion checker does not yet implement this type of function call.

9
test/libsolidity/smtCheckerTests/verification_target/constant_condition_2.sol Normal file
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pragma experimental SMTChecker;
contract C {
function f(uint x) public pure {
if (x >= 10) { if (x < 10) { revert(); } }
}
}
// ----
// Warning: (109-115): Condition is always false.
// Warning: (119-127): Assertion checker does not yet implement this type of function call.

9
test/libsolidity/smtCheckerTests/verification_target/constant_condition_3.sol Normal file
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pragma experimental SMTChecker;
// a plain literal constant is fine
contract C {
function f(uint) public pure {
if (true) { revert(); }
}
}
// ----
// Warning: (136-144): Assertion checker does not yet implement this type of function call.

6
test/libsolidity/smtCheckerTests/verification_target/simple_assert.sol Normal file
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pragma experimental SMTChecker;
contract C {
function f(uint a) public pure { assert(a == 2); }
}
// ----
// Warning: (82-96): Assertion violation happens here

4
test/libsolidity/smtCheckerTests/verification_target/simple_assert_with_require.sol Normal file
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pragma experimental SMTChecker;
contract C {
function f(uint a) public pure { require(a < 10); assert(a < 20); }
}