%------------------------------------------------------------------------------
% File     : CSE_E---1.5
% Problem  : SET599+3 : TPTP v8.1.2. Released v2.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : java -jar /export/starexec/sandbox/solver/bin/mcs_scs.jar %d %s

% Computer : n011.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 : Thu Aug 31 14:34:43 EDT 2023

% Result   : Theorem 0.21s 0.58s
% Output   : CNFRefutation 0.21s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    5
%            Number of leaves      :   12
% Syntax   : Number of formulae    :   21 (  12 unt;   9 typ;   0 def)
%            Number of atoms       :   12 (   3 equ)
%            Maximal formula atoms :    1 (   1 avg)
%            Number of connectives :    4 (   4   ~;   0   |;   0   &)
%                                         (   0 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    4 (   2 avg)
%            Maximal term depth    :    3 (   1 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :   14 (   7   >;   7   *;   0   +;   0  <<)
%            Number of predicates  :    4 (   2 usr;   1 prp; 0-2 aty)
%            Number of functors    :    7 (   7 usr;   2 con; 0-2 aty)
%            Number of variables   :   16 (   1 sgn;  12   !;   0   ?;   0   :)

% Comments : 
%------------------------------------------------------------------------------
tff(decl_22,type,
    symmetric_difference: ( $i * $i ) > $i ).

tff(decl_23,type,
    difference: ( $i * $i ) > $i ).

tff(decl_24,type,
    union: ( $i * $i ) > $i ).

tff(decl_25,type,
    subset: ( $i * $i ) > $o ).

tff(decl_26,type,
    member: ( $i * $i ) > $o ).

tff(decl_27,type,
    esk1_2: ( $i * $i ) > $i ).

tff(decl_28,type,
    esk2_2: ( $i * $i ) > $i ).

tff(decl_29,type,
    esk3_0: $i ).

tff(decl_30,type,
    esk4_0: $i ).

fof(prove_th58,conjecture,
    ! [X1,X2] : subset(difference(X1,X2),symmetric_difference(X1,X2)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_th58) ).

fof(symmetric_difference_defn,axiom,
    ! [X1,X2] : symmetric_difference(X1,X2) = union(difference(X1,X2),difference(X2,X1)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',symmetric_difference_defn) ).

fof(subset_of_union,axiom,
    ! [X1,X2] : subset(X1,union(X1,X2)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',subset_of_union) ).

fof(c_0_3,negated_conjecture,
    ~ ! [X1,X2] : subset(difference(X1,X2),symmetric_difference(X1,X2)),
    inference(assume_negation,[status(cth)],[prove_th58]) ).

fof(c_0_4,negated_conjecture,
    ~ subset(difference(esk3_0,esk4_0),symmetric_difference(esk3_0,esk4_0)),
    inference(skolemize,[status(esa)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[c_0_3])])]) ).

fof(c_0_5,plain,
    ! [X4,X5] : symmetric_difference(X4,X5) = union(difference(X4,X5),difference(X5,X4)),
    inference(variable_rename,[status(thm)],[symmetric_difference_defn]) ).

cnf(c_0_6,negated_conjecture,
    ~ subset(difference(esk3_0,esk4_0),symmetric_difference(esk3_0,esk4_0)),
    inference(split_conjunct,[status(thm)],[c_0_4]) ).

cnf(c_0_7,plain,
    symmetric_difference(X1,X2) = union(difference(X1,X2),difference(X2,X1)),
    inference(split_conjunct,[status(thm)],[c_0_5]) ).

fof(c_0_8,plain,
    ! [X6,X7] : subset(X6,union(X6,X7)),
    inference(variable_rename,[status(thm)],[subset_of_union]) ).

cnf(c_0_9,negated_conjecture,
    ~ subset(difference(esk3_0,esk4_0),union(difference(esk3_0,esk4_0),difference(esk4_0,esk3_0))),
    inference(rw,[status(thm)],[c_0_6,c_0_7]) ).

cnf(c_0_10,plain,
    subset(X1,union(X1,X2)),
    inference(split_conjunct,[status(thm)],[c_0_8]) ).

cnf(c_0_11,negated_conjecture,
    $false,
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_9,c_0_10])]),
    [proof] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem    : SET599+3 : TPTP v8.1.2. Released v2.2.0.
% 0.07/0.13  % Command    : java -jar /export/starexec/sandbox/solver/bin/mcs_scs.jar %d %s
% 0.14/0.34  % Computer : n011.cluster.edu
% 0.14/0.34  % Model    : x86_64 x86_64
% 0.14/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.34  % Memory   : 8042.1875MB
% 0.14/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.14/0.34  % CPULimit   : 300
% 0.14/0.34  % WCLimit    : 300
% 0.14/0.34  % DateTime   : Sat Aug 26 14:02:09 EDT 2023
% 0.14/0.34  % CPUTime  : 
% 0.21/0.56  start to proof: theBenchmark
% 0.21/0.58  % Version  : CSE_E---1.5
% 0.21/0.58  % Problem  : theBenchmark.p
% 0.21/0.58  % Proof found
% 0.21/0.58  % SZS status Theorem for theBenchmark.p
% 0.21/0.58  % SZS output start Proof
% See solution above
% 0.21/0.58  % Total time : 0.006000 s
% 0.21/0.58  % SZS output end Proof
% 0.21/0.58  % Total time : 0.009000 s
%------------------------------------------------------------------------------