contract C { struct S { uint x; } function f(bool b) public pure { S memory s; s.x = 2; if (b) delete s; else delete s.x; assert(s.x == 0); } } // ==== // SMTEngine: all // ---- // Info 1391: CHC: 1 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.