contract C { function f(uint prevrandao) public view { assert(block.prevrandao == prevrandao); // should fail assert(block.difficulty == prevrandao); // should fail assert(block.difficulty == block.prevrandao); // should hold } } // ==== // SMTEngine: all // SMTIgnoreCex: yes // ---- // Warning 8417: (122-138): Since the VM version paris, "difficulty" was replaced by "prevrandao", which now returns a random number based on the beacon chain. // Warning 8417: (179-195): Since the VM version paris, "difficulty" was replaced by "prevrandao", which now returns a random number based on the beacon chain. // Warning 6328: (58-96): CHC: Assertion violation happens here. // Warning 6328: (115-153): CHC: Assertion violation happens here. // Info 1391: CHC: 1 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.