%------------------------------------------------------------------------------ % File : Moca---0.1 % Problem : SWV011-1 : TPTP v8.1.0. Released v2.4.0. % Transfm : none % Format : tptp:raw % Command : moca.sh %s % Computer : n024.cluster.edu % Model : x86_64 x86_64 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz % Memory : 8042.1875MB % OS : Linux 3.10.0-693.el7.x86_64 % CPULimit : 300s % WCLimit : 600s % DateTime : Wed Jul 20 20:40:53 EDT 2022 % Result : Unsatisfiable 0.19s 0.39s % Output : Proof 0.19s % Verified : % SZS Type : - % Comments : %------------------------------------------------------------------------------ %----WARNING: Could not form TPTP format derivation %------------------------------------------------------------------------------ %----ORIGINAL SYSTEM OUTPUT % 0.03/0.12 % Problem : SWV011-1 : TPTP v8.1.0. Released v2.4.0. % 0.03/0.13 % Command : moca.sh %s % 0.12/0.34 % Computer : n024.cluster.edu % 0.12/0.34 % Model : x86_64 x86_64 % 0.12/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz % 0.12/0.34 % Memory : 8042.1875MB % 0.12/0.34 % OS : Linux 3.10.0-693.el7.x86_64 % 0.12/0.34 % CPULimit : 300 % 0.12/0.34 % WCLimit : 600 % 0.12/0.34 % DateTime : Wed Jun 15 19:43:33 EDT 2022 % 0.12/0.34 % CPUTime : % 0.19/0.39 % SZS status Unsatisfiable % 0.19/0.39 % SZS output start Proof % 0.19/0.39 The input problem is unsatisfiable because % 0.19/0.39 % 0.19/0.39 [1] the following set of Horn clauses is unsatisfiable: % 0.19/0.39 % 0.19/0.39 b_holds(key(generate_key(an_a_nonce), a)) % 0.19/0.39 a_holds(key(generate_key(an_a_nonce), b)) % 0.19/0.39 a_holds(key(A, b)) & b_holds(key(A, a)) ==> \bottom % 0.19/0.39 % 0.19/0.39 This holds because % 0.19/0.39 % 0.19/0.39 [2] the following E entails the following G (Claessen-Smallbone's transformation (2018)): % 0.19/0.39 % 0.19/0.39 E: % 0.19/0.39 a_holds(key(generate_key(an_a_nonce), b)) = true__ % 0.19/0.39 b_holds(key(generate_key(an_a_nonce), a)) = true__ % 0.19/0.39 f1(true__) = false__ % 0.19/0.39 f2(b_holds(key(A, a)), A) = true__ % 0.19/0.39 f2(true__, A) = f1(a_holds(key(A, b))) % 0.19/0.39 G: % 0.19/0.39 true__ = false__ % 0.19/0.39 % 0.19/0.39 This holds because % 0.19/0.39 % 0.19/0.39 [3] E entails the following ordered TRS and the lhs and rhs of G join by the TRS: % 0.19/0.39 % 0.19/0.39 % 0.19/0.39 a_holds(key(generate_key(an_a_nonce), b)) -> true__ % 0.19/0.39 b_holds(key(generate_key(an_a_nonce), a)) -> true__ % 0.19/0.39 f1(a_holds(key(A, b))) -> f2(true__, A) % 0.19/0.39 f1(true__) -> false__ % 0.19/0.39 f2(b_holds(key(A, a)), A) -> true__ % 0.19/0.39 f2(true__, generate_key(an_a_nonce)) -> false__ % 0.19/0.39 f2(true__, generate_key(an_a_nonce)) -> true__ % 0.19/0.39 false__ -> true__ % 0.19/0.39 with the LPO induced by % 0.19/0.39 a_holds > f2 > b > f1 > a > an_a_nonce > generate_key > key > b_holds > false__ > true__ % 0.19/0.39 % 0.19/0.39 % SZS output end Proof % 0.19/0.39 %------------------------------------------------------------------------------