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var i: int;
var m: int;
procedure foo()
modifies i;
{
if (i < 20) {
i := i + 1;
call foo();
}
}
procedure bar1(j: int)
modifies i;
{
if (j < 2*m)
{
i := i + 1;
call bar1(j+1);
}
}
procedure bar2(j: int)
modifies i;
{
if (j < m) {
i := i - 1;
call bar2(j+1);
}
}
procedure {:entrypoint} main()
modifies i;
{
i := 0;
call bar1(0);
call bar2(0);
i := 0;
call foo();
assume !(i < 10);
}
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