TPTP Problem File: SWV436^3.p

View Solutions - Solve Problem

%------------------------------------------------------------------------------
% File     : SWV436^3 : TPTP v7.1.0. Released v3.6.0.
% Domain   : Software Verification (Security)
% Problem  : ICL^B logic mapping to modal logic implies that Example 3 holds
% Version  : [Ben08] axioms.
% English  :

% Refs     : [GA08]  Garg & Abadi (2008), A Modal Deconstruction of Access
%          : [Ben08] Benzmueller (2008), Automating Access Control Logics i
%          : [BP09]  Benzmueller & Paulson (2009), Exploring Properties of
% Source   : [Ben08]
% Names    :

% Status   : CounterSatisfiable
% Rating   : 0.33 v6.2.0, 0.00 v4.0.0, 1.00 v3.7.0
% Syntax   : Number of formulae    :   61 (   0 unit;  33 type;  24 defn)
%            Number of atoms       :  148 (  24 equality;  51 variable)
%            Maximal formula depth :    9 (   5 average)
%            Number of connectives :   75 (   3   ~;   1   |;   2   &;  68   @)
%                                         (   0 <=>;   1  =>;   0  <=;   0 <~>)
%                                         (   0  ~|;   0  ~&)
%            Number of type conns  :  125 ( 125   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   38 (  33   :;   0   =)
%            Number of variables   :   47 (   2 sgn;   4   !;   4   ?;  39   ^)
%                                         (  47   :;   0  !>;   0  ?*)
%                                         (   0  @-;   0  @+)
% SPC      : TH0_CSA_EQU_NAR

% Comments : 
%------------------------------------------------------------------------------
%----Include axioms of multi modal logic
include('Axioms/LCL008^0.ax').
%----Include axioms of ICL logic
include('Axioms/SWV008^0.ax').
%------------------------------------------------------------------------------
%----The prinicpals
thf(admin,type,(
    admin: $i > $o )).

thf(bob,type,(
    bob: $i > $o )).

%----The atoms
thf(deletfile1,type,(
    deletefile1: $i > $o )).

%----The axioms of the example problem
%----((admin => false) says deletefile1)
thf(ax1,axiom,
    ( iclval @ ( icl_says @ ( icl_impl @ ( icl_princ @ admin ) @ icl_false ) @ ( icl_atom @ deletefile1 ) ) )).

%----(admin says ((bob => admin) says deletefile1))
thf(ax2,axiom,
    ( iclval @ ( icl_says @ ( icl_princ @ admin ) @ ( icl_says @ ( icl_impl @ ( icl_princ @ bob ) @ ( icl_princ @ admin ) ) @ ( icl_atom @ deletefile1 ) ) ) )).

%----(bob says deletefile1)
thf(ax3,axiom,
    ( iclval @ ( icl_says @ ( icl_princ @ bob ) @ ( icl_atom @ deletefile1 ) ) )).

%----We prove deletefile1
thf(ex3,conjecture,
    ( iclval @ ( icl_atom @ deletefile1 ) )).

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