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function \true() : bool;
type \procedure;
procedure \old(any: \procedure) returns (\var: \procedure);
implementation \old(any: \procedure) returns (\var: \procedure)
{
var \modifies: \procedure;
\modifies := any;
\var := \modifies;
}
procedure qux(a: \procedure);
implementation qux(a: \procedure)
{
var \var: \procedure;
var x: bool;
call \var := \old(a);
x := \true();
}
Boogie program verifier finished with 0 verified, 0 errors
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