%--------------------------------------------------------------------------
% File     : HWV002-0 : TPTP v7.2.0. Released v2.1.0.
% Domain   : Hardware Verification
% Axioms   : Connections, faults, and gates.
% Version  : [Gei96] axioms.
% English  :

% Refs     : [Gei96] Geisler (1996), Email to G. Sutcliffe
% Source   : [Gei96]
% Names    :

% Status   : Satisfiable
% Syntax   : Number of clauses    :   27 (   5 non-Horn;   0 unit;  27 RR)
%            Number of atoms      :   81 (   0 equality)
%            Maximal clause size  :    4 (   3 average)
%            Number of predicates :   10 (   0 propositional; 1-2 arity)
%            Number of functors   :    3 (   0 constant; 1-1 arity)
%            Number of variables  :   31 (   0 singleton)
%            Maximal term depth   :    2 (   1 average)
% SPC      : 

% Comments :
% Bugfixes : v2.7.0 - Fixed clause not_ok_or_abnormal
%--------------------------------------------------------------------------
%----Properties of connections and values
cnf(value_propagation_zero1,axiom,
    ( ~ connection(P1,P2)
    | ~ zero(P1)
    | zero(P2) )).

cnf(value_propagation_one1,axiom,
    ( ~ connection(P1,P2)
    | ~ one(P1)
    | one(P2) )).

cnf(value_propagation_zero2,axiom,
    ( ~ connection(P1,P2)
    | ~ zero(P2)
    | zero(P1) )).

cnf(value_propagation_one2,axiom,
    ( ~ connection(P1,P2)
    | ~ one(P2)
    | one(P1) )).

cnf(unique_value,axiom,
    ( ~ zero(P)
    | ~ one(P) )).

%----AND gate
cnf(and_0x_0,axiom,
    ( ~ and_ok(K)
    | ~ zero(in1(K))
    | zero(out1(K)) )).

cnf(and_x0_0,axiom,
    ( ~ and_ok(K)
    | ~ zero(in2(K))
    | zero(out1(K)) )).

cnf(and_11_1,axiom,
    ( ~ and_ok(K)
    | ~ one(in1(K))
    | ~ one(in2(K))
    | one(out1(K)) )).

cnf(and_0_00,axiom,
    ( ~ and_ok(K)
    | ~ zero(out1(K))
    | zero(in1(K))
    | zero(in2(K)) )).

cnf(and_1_1x,axiom,
    ( ~ and_ok(K)
    | ~ one(out1(K))
    | one(in1(K)) )).

cnf(and_1_x1,axiom,
    ( ~ and_ok(K)
    | ~ one(out1(K))
    | one(in2(K)) )).

%----Fault model for AND
cnf(not_and_ok_and_abnormal,axiom,
    ( ~ and_ok(K)
    | ~ abnormal(K) )).

cnf(and_ok_or_abnormal,axiom,
    ( ~ logic_and(K)
    | and_ok(K)
    | abnormal(K) )).

%----OR gate
cnf(or_1x_1,axiom,
    ( ~ or_ok(K)
    | ~ one(in1(K))
    | one(out1(K)) )).

cnf(or_x1_1,axiom,
    ( ~ or_ok(K)
    | ~ one(in2(K))
    | one(out1(K)) )).

cnf(or_00_0,axiom,
    ( ~ or_ok(K)
    | ~ zero(in1(K))
    | ~ zero(in2(K))
    | zero(out1(K)) )).

cnf(or_1_11,axiom,
    ( ~ or_ok(K)
    | ~ one(out1(K))
    | one(in1(K))
    | one(in2(K)) )).

cnf(or_0_0x,axiom,
    ( ~ or_ok(K)
    | ~ zero(out1(K))
    | zero(in1(K)) )).

cnf(or_0_01,axiom,
    ( ~ or_ok(K)
    | ~ zero(out1(K))
    | zero(in2(K)) )).

%----Fault model for OR
cnf(not_or_ok_and_abnormal,axiom,
    ( ~ or_ok(K)
    | ~ abnormal(K) )).

cnf(or_ok_or_abnormal,axiom,
    ( ~ logic_or(K)
    | or_ok(K)
    | abnormal(K) )).

%----NOT gate
cnf(not_0_1_fw,axiom,
    ( ~ not_ok(K)
    | ~ zero(in1(K))
    | one(out1(K)) )).

cnf(not_1_0_fw,axiom,
    ( ~ not_ok(K)
    | ~ one(in1(K))
    | zero(out1(K)) )).

cnf(not_0_1_bw,axiom,
    ( ~ not_ok(K)
    | ~ zero(out1(K))
    | one(in1(K)) )).

cnf(not_1_0_bw,axiom,
    ( ~ not_ok(K)
    | ~ one(out1(K))
    | zero(in1(K)) )).

%----Fault model for NOT
cnf(not__not_ok_and_abnormal,axiom,
    ( ~ not_ok(K)
    | ~ abnormal(K) )).

cnf(not_ok_or_abnormal,axiom,
    ( ~ logic_not(K)
    | not_ok(K)
    | abnormal(K) )).

%--------------------------------------------------------------------------