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// RUN: %clangxx -I../../../include -g -DMAX_ELEMENTS=4 -fno-exceptions -emit-llvm -c -o %t1.bc %s
// RUN: rm -rf %t.klee-out
// RUN: %klee --output-dir=%t.klee-out --libc=klee --max-forks=25 --write-no-tests --exit-on-error --optimize --disable-inlining --search=nurs:depth --use-cex-cache %t1.bc
#include "klee/klee.h"
#include "klee/ADT/ImmutableSet.h"
using namespace klee;
typedef ImmutableSet<unsigned> T;
bool iff(bool a, bool b) {
return !!a == !!b;
}
template<typename InputIterator, typename T>
bool contains(InputIterator begin, InputIterator end, T item) {
for (; begin!=end; ++begin)
if (*begin == item)
return true;
return false;
}
bool equal(T &a, T &b) {
T::iterator aIt=a.begin(), ae=a.end(), bIt=b.begin(), be=b.end();
for (; aIt!=ae && bIt!=be; ++aIt, ++bIt)
if (*aIt != *bIt)
return false;
if (aIt!=ae) return false;
if (bIt!=be) return false;
return true;
}
template<typename InputIterator, typename T>
void remove(InputIterator begin, InputIterator end, T item) {
InputIterator out = begin;
for (; begin!=end; ++begin) {
if (*begin!=item) {
if (out!=begin)
*out = *begin;
++out;
}
}
}
void check_set(T &set, unsigned num, unsigned *values) {
assert(set.size() == num);
// must contain only values
unsigned item = klee_range(0, 256, "range");
assert(iff(contains(values, values+num, item),
set.count(item)));
// each value must be findable, must be its own lower bound, and
// must be one behind its upper bound
for (unsigned i=0; i<num; i++) {
unsigned item = values[i];
assert(set.count(item));
T::iterator it = set.find(item);
T::iterator lb = set.lower_bound(item);
T::iterator ub = set.upper_bound(item);
assert(it != set.end()); // must exit
assert(*it == item); // must be itself
assert(lb == it); // must be own lower bound
assert(--ub == it); // must be one behind upper
}
// for items not in the set...
unsigned item2 = klee_range(0, 256, "range");
if (!set.count(item2)) {
assert(set.find(item2) == set.end());
T::iterator lb = set.lower_bound(item2);
for (T::iterator it=set.begin(); it!=lb; ++it)
assert(*it < item2);
for (T::iterator it=lb, ie=set.end(); it!=ie; ++it)
assert(*it >= item2);
T::iterator ub = set.upper_bound(item2);
for (T::iterator it=set.begin(); it!=ub; ++it)
assert(*it <= item2);
for (T::iterator it=ub, ie=set.end(); it!=ie; ++it)
assert(*it > item2);
}
}
#ifndef MAX_ELEMENTS
#define MAX_ELEMENTS 4
#endif
void test() {
unsigned num=0, values[MAX_ELEMENTS];
T set;
assert(MAX_ELEMENTS >= 0);
for (unsigned i=0; i<klee_range(0,MAX_ELEMENTS+1, "range"); i++) {
unsigned item = klee_range(0, 256, "range");
if (contains(values, values+num, item))
klee_silent_exit(0);
set = set.insert(item);
values[num++] = item;
}
check_set(set, num, values);
unsigned item = klee_range(0, 256, "range");
if (contains(values, values+num, item)) { // in tree
// insertion is invariant
T set2 = set.insert(item);
assert(equal(set2, set));
// check remove
T set3 = set.remove(item);
assert(!equal(set3, set)); // mostly just for coverage
assert(set3.size() + 1 == set.size());
assert(!set3.count(item));
} else { // not in tree
// removal is invariant
T set2 = set.remove(item);
assert(equal(set2, set));
// check insert
T set3 = set.insert(item);
assert(!equal(set3, set)); // mostly just for coverage
assert(set3.size() == set.size() + 1);
assert(set3.count(item));
}
}
int main(int argc, char **argv) {
test();
assert(T::getAllocated() == 0);
return 0;
}
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