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type X;
function {:builtin "MapConst"} MapConstInt(int) : [X]int;
function {:builtin "MapConst"} MapConstBool(bool) : [X]bool;
function {:builtin "MapOr"} MapOr([X]bool, [X]bool) : [X]bool;
function {:inline} None() : [X]bool
{
MapConstBool(false)
}
function {:inline} All() : [X]bool
{
MapConstBool(true)
}
var x: int;
var l: [X]bool;
procedure Split({:linear "x"} xls: [X]bool) returns ({:linear "x"} xls1: [X]bool, {:linear "x"} xls2: [X]bool);
ensures xls == MapOr(xls1, xls2) && xls1 != None() && xls2 != None();
procedure Allocate() returns ({:linear "tid"} xls: [X]bool);
procedure {:entrypoint} {:yields} main({:linear "tid"} tidls': [X]bool, {:linear "x"} xls': [X]bool)
requires tidls' != None() && xls' == All();
{
var {:linear "tid"} tidls: [X]bool;
var {:linear "x"} xls: [X]bool;
var {:linear "tid"} lsChild: [X]bool;
var {:linear "x"} xls1: [X]bool;
var {:linear "x"} xls2: [X]bool;
tidls := tidls';
xls := xls';
x := 42;
yield;
assert xls == All();
assert x == 42;
call xls1, xls2 := Split(xls);
call lsChild := Allocate();
assume (lsChild != None());
async call thread(lsChild, xls1);
call lsChild := Allocate();
assume (lsChild != None());
async call thread(lsChild, xls2);
}
procedure {:yields} {:stable} thread({:linear "tid"} tidls': [X]bool, {:linear "x"} xls': [X]bool)
requires tidls' != None() && xls' != None();
{
var {:linear "x"} xls: [X]bool;
var {:linear "tid"} tidls: [X]bool;
tidls := tidls';
xls := xls';
assume l == None();
l := tidls;
yield;
assert tidls != None() && xls != None();
x := 0;
yield;
assert tidls != None() && xls != None();
assert x == 0;
yield;
assert tidls != None() && xls != None();
l := None();
}
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