%------------------------------------------------------------------------------ % File : cvc5---1.3.4 % Problem : PUZ020-1 : TPTP v9.2.1. Released v1.0.0. % Transfm : none % Format : tptp:raw % Command : /export/starexec/sandbox/solver/bin/do_cvc5 /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM % Computer : n014.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 : 300s % DateTime : Wed Jun 3 08:43:58 AM UTC 2026 % Result : Unsatisfiable 0.30s 0.55s % Output : Proof 0.30s % Verified : % SZS Type : - % Comments : %------------------------------------------------------------------------------ %----WARNING: Could not form TPTP format derivation %------------------------------------------------------------------------------ %----ORIGINAL SYSTEM OUTPUT % 0.00/0.12 % Problem : PUZ020-1 : TPTP v9.2.1. Released v1.0.0. % 0.12/0.13 % Command : /export/starexec/sandbox/solver/bin/do_cvc5 /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM % 0.16/0.34 % Computer : n014.cluster.edu % 0.16/0.34 % Model : x86_64 x86_64 % 0.16/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz % 0.16/0.34 % Memory : 8042.1875MB % 0.16/0.34 % OS : Linux 3.10.0-693.el7.x86_64 % 0.16/0.34 % CPULimit : 300 % 0.16/0.34 % WCLimit : 300 % 0.16/0.34 % DateTime : Tue Jun 2 13:12:43 EDT 2026 % 0.16/0.34 % CPUTime : % 0.30/0.49 %----Proving TF0_NAR, FOF, or CNF % 0.30/0.51 --- Run --decision=internal --simplification=none --no-inst-no-entail --no-cbqi --full-saturate-quant at 15... % 0.30/0.55 % SZS status Unsatisfiable % 0.30/0.55 % SZS output start Proof % 0.30/0.55 ( % 0.30/0.55 (declare-sort $$unsorted 0) % 0.30/0.55 (declare-const tptp.wife $$unsorted) % 0.30/0.55 (declare-const tptp.husband $$unsorted) % 0.30/0.55 (declare-const tptp.says (-> $$unsorted $$unsorted Bool)) % 0.30/0.55 (declare-const tptp.a_truth (-> $$unsorted Bool)) % 0.30/0.55 (declare-const tptp.statement_by (-> $$unsorted $$unsorted)) % 0.30/0.55 (declare-const tptp.person (-> $$unsorted Bool)) % 0.30/0.55 (declare-const tptp.knight (-> $$unsorted Bool)) % 0.30/0.55 (declare-const tptp.knave (-> $$unsorted Bool)) % 0.30/0.55 (define @t1 () (@var "X" $$unsorted)) % 0.30/0.55 (define @t2 () (tptp.knave @t1)) % 0.30/0.55 (define @t3 () (tptp.knight @t1)) % 0.30/0.55 (define @t4 () (not (tptp.person @t1))) % 0.30/0.55 (define @t5 () (@list @t1)) % 0.30/0.55 (define @t6 () (not @t2)) % 0.30/0.55 (define @t7 () (not @t3)) % 0.30/0.55 (define @t8 () (@var "Y" $$unsorted)) % 0.30/0.55 (define @t9 () (tptp.a_truth @t8)) % 0.30/0.55 (define @t10 () (not @t9)) % 0.30/0.55 (define @t11 () (not (tptp.says @t1 @t8))) % 0.30/0.55 (define @t12 () (@list @t1 @t8)) % 0.30/0.55 (define @t13 () (tptp.statement_by @t1)) % 0.30/0.55 (define @t14 () (tptp.a_truth @t13)) % 0.30/0.55 (define @t15 () (forall @t5 (or @t4 (not @t14) @t3))) % 0.30/0.55 (define @t16 () (tptp.person tptp.husband)) % 0.30/0.55 (define @t17 () (tptp.statement_by tptp.husband)) % 0.30/0.55 (define @t18 () (tptp.knight tptp.wife)) % 0.30/0.55 (define @t19 () (tptp.knight tptp.husband)) % 0.30/0.55 (define @t20 () (not @t19)) % 0.30/0.55 (define @t21 () (tptp.a_truth @t17)) % 0.30/0.55 (define @t22 () (not @t21)) % 0.30/0.55 (define @t23 () (not @t18)) % 0.30/0.55 (define @t24 () (not @t16)) % 0.30/0.55 (define @t25 () (or @t24 @t22 @t19)) % 0.30/0.55 (define @t26 () (not @t25)) % 0.30/0.55 (assume @p1 (forall @t5 (or @t4 @t3 @t2))) % 0.30/0.55 (assume @p2 (forall @t5 (or @t4 @t7 @t6))) % 0.30/0.55 (assume @p3 (forall @t12 (or @t11 @t9 @t10))) % 0.30/0.55 (assume @p4 (forall @t12 (or @t11 (not (= @t1 @t8))))) % 0.30/0.55 (assume @p5 (forall @t12 (or @t11 (= @t8 @t13)))) % 0.30/0.55 (assume @p6 (forall @t12 (or @t4 (not (= @t1 (tptp.statement_by @t8)))))) % 0.30/0.55 (assume @p7 @t15) % 0.30/0.55 (assume @p8 (forall @t5 (or @t4 @t14 @t2))) % 0.30/0.55 (assume @p9 (forall @t12 (or @t7 @t11 @t9))) % 0.30/0.55 (assume @p10 (forall @t12 (or @t6 @t11 @t10))) % 0.30/0.55 (assume @p11 @t16) % 0.30/0.55 (assume @p12 (tptp.person tptp.wife)) % 0.30/0.55 (assume @p13 (not (= tptp.husband tptp.wife))) % 0.30/0.55 (assume @p14 (tptp.says tptp.husband @t17)) % 0.30/0.55 (assume @p15 (or @t22 @t20 @t18)) % 0.30/0.55 (assume @p16 (or @t21 @t20)) % 0.30/0.55 (assume @p17 (or @t21 @t18)) % 0.30/0.55 (assume @p18 (or @t23 @t21)) % 0.30/0.55 (assume @p19 @t20) % 0.30/0.55 (step @p20 :rule reordering :premises (@p18) :args ((or @t21 @t23))) % 0.30/0.55 (step @p21 :rule chain_m_resolution :premises (@p20 @p17) :args (@t21 (@list false) (@list @t18))) % 0.30/0.55 (step @p22 :rule cnf_or_pos :args (@t25)) % 0.30/0.55 (step @p23 :rule reordering :premises (@p22) :args ((or @t22 @t19 @t24 @t26))) % 0.30/0.55 (step @p24 :rule chain_m_resolution :premises (@p23 @p21 @p19 @p11) :args (@t26 (@list false true false) (@list @t21 @t19 @t16))) % 0.30/0.55 (assume-push @p31 @t15) % 0.30/0.55 (step @p26 :rule instantiate :premises (@p7) :args ((@list tptp.husband))) % 0.30/0.55 (step-pop @p32 :rule scope :premises (@p26)) % 0.30/0.55 (step @p27 :rule process_scope :premises (@p32) :args (@t25)) % 0.30/0.55 (step @p29 :rule implies_elim :premises (@p27)) % 0.30/0.55 (step @p30 false :rule chain_m_resolution :premises (@p29 @p24 @p7) :args (false (@list true false) (@list @t25 @t15))) % 0.30/0.55 ) % 0.30/0.55 % SZS output end Proof % 0.30/0.55 % cvc5 exiting %------------------------------------------------------------------------------