contract C { uint x; function f(address _a) public { x = 2; _a.staticcall(""); assert(x == 2); // should hold } } // ==== // SMTEngine: bmc // ---- // Warning 9302: (66-83): Return value of low-level calls not used. // Info 6002: BMC: 1 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.