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const x: int;
function R(int) returns (bool);
function Even(int) returns (bool);
var y: int where R(y);
var g: int where g == 12;
procedure P(x: int where x > 0) returns (y: int where y < 0);
requires x < 100;
modifies g;
ensures -100 < y;
implementation P(xx: int where xx > 0) // error: where not allowed in implementation decl
returns (yy: int where yy < 0) // error: where not allowed in implementation decl
{
var a: int where a == b; // b is not allowed to be mentioned here, but this test is only
var b: int; // for parsing, so no complaint will be issued
start:
a := xx;
call b := P(a);
yy := b;
return;
}
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