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const {:existential true} b1:bool; const {:existential true} b2:bool; const {:existential true} b3:bool; var myVar: int; procedure foo(i:int) modifies myVar; ensures b1 ==> myVar>0; ensures b2 ==> myVar==0; ensures b3 ==> myVar<0; { myVar:=5; } // expected outcome: Correct // expected assigment: b1->True,b2->False,b3->False