#include #include #include $input int x; _Bool b=true; int a=0; void foo(){ $atomic{ b=false; $when(x>0); b=true; } } void goo(){ if(!b) a=1; } void main(){ $proc pf, pg; $atomic{ pf=$spawn foo(); pg=$spawn goo(); } $wait(pg); assert(a==0); assert(b); $wait(pf); }