TSTP Solution File: GRP353-1 by Vampire-SAT---4.8

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Vampire-SAT---4.8
% Problem  : GRP353-1 : TPTP v8.1.2. Released v2.5.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : vampire --mode casc_sat -m 16384 --cores 7 -t %d %s

% Computer : n013.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 : Tue Apr 30 12:03:22 EDT 2024

% Result   : Unsatisfiable 0.22s 0.42s
% Output   : Refutation 0.22s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   66
%            Number of leaves      :   13
% Syntax   : Number of formulae    :  102 (  26 unt;   0 def)
%            Number of atoms       :  282 ( 261 equ)
%            Maximal formula atoms :   10 (   2 avg)
%            Number of connectives :  343 ( 163   ~; 178   |;   0   &)
%                                         (   2 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   15 (   4 avg)
%            Maximal term depth    :    5 (   1 avg)
%            Number of predicates  :    4 (   2 usr;   3 prp; 0-2 aty)
%            Number of functors    :   10 (  10 usr;   8 con; 0-2 aty)
%            Number of variables   :   65 (  65   !;   0   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f1946,plain,
    $false,
    inference(subsumption_resolution,[],[f1932,f1915]) ).

fof(f1915,plain,
    ! [X0] : identity != multiply(inverse(X0),sk_c5),
    inference(subsumption_resolution,[],[f1914,f1]) ).

fof(f1,axiom,
    ! [X0] : multiply(identity,X0) = X0,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',left_identity) ).

fof(f1914,plain,
    ! [X0] :
      ( sk_c5 != multiply(identity,sk_c5)
      | identity != multiply(inverse(X0),sk_c5) ),
    inference(forward_demodulation,[],[f1913,f539]) ).

fof(f539,plain,
    identity = sk_c6,
    inference(duplicate_literal_removal,[],[f534]) ).

fof(f534,plain,
    ( identity = sk_c6
    | identity = sk_c6
    | identity = sk_c6 ),
    inference(superposition,[],[f475,f389]) ).

fof(f389,plain,
    ( identity = multiply(sk_c3,sk_c4)
    | identity = sk_c6 ),
    inference(superposition,[],[f203,f382]) ).

fof(f382,plain,
    ( sk_c4 = inverse(sk_c3)
    | identity = sk_c6 ),
    inference(duplicate_literal_removal,[],[f370]) ).

fof(f370,plain,
    ( identity = sk_c6
    | sk_c4 = inverse(sk_c3)
    | sk_c4 = inverse(sk_c3) ),
    inference(superposition,[],[f255,f14]) ).

fof(f14,axiom,
    ( sk_c6 = multiply(sk_c1,sk_c7)
    | sk_c4 = inverse(sk_c3) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_11) ).

fof(f255,plain,
    ( identity = multiply(sk_c1,sk_c7)
    | sk_c4 = inverse(sk_c3) ),
    inference(superposition,[],[f203,f20]) ).

fof(f20,axiom,
    ( sk_c7 = inverse(sk_c1)
    | sk_c4 = inverse(sk_c3) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_17) ).

fof(f203,plain,
    ! [X0] : identity = multiply(X0,inverse(X0)),
    inference(superposition,[],[f118,f2]) ).

fof(f2,axiom,
    ! [X0] : identity = multiply(inverse(X0),X0),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',left_inverse) ).

fof(f118,plain,
    ! [X0,X1] : multiply(X0,X1) = multiply(inverse(inverse(X0)),X1),
    inference(superposition,[],[f108,f108]) ).

fof(f108,plain,
    ! [X0,X1] : multiply(inverse(X0),multiply(X0,X1)) = X1,
    inference(forward_demodulation,[],[f80,f1]) ).

fof(f80,plain,
    ! [X0,X1] : multiply(inverse(X0),multiply(X0,X1)) = multiply(identity,X1),
    inference(superposition,[],[f3,f2]) ).

fof(f3,axiom,
    ! [X2,X0,X1] : multiply(multiply(X0,X1),X2) = multiply(X0,multiply(X1,X2)),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',associativity) ).

fof(f475,plain,
    ( sk_c6 = multiply(sk_c3,sk_c4)
    | identity = sk_c6 ),
    inference(duplicate_literal_removal,[],[f455]) ).

fof(f455,plain,
    ( identity = sk_c6
    | identity = sk_c6
    | sk_c6 = multiply(sk_c3,sk_c4) ),
    inference(superposition,[],[f431,f13]) ).

fof(f13,axiom,
    ( sk_c6 = multiply(sk_c1,sk_c7)
    | sk_c6 = multiply(sk_c3,sk_c4) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_10) ).

fof(f431,plain,
    ( identity = multiply(sk_c1,sk_c7)
    | identity = sk_c6 ),
    inference(superposition,[],[f203,f422]) ).

fof(f422,plain,
    ( sk_c7 = inverse(sk_c1)
    | identity = sk_c6 ),
    inference(duplicate_literal_removal,[],[f413]) ).

fof(f413,plain,
    ( identity = sk_c6
    | identity = sk_c6
    | sk_c7 = inverse(sk_c1) ),
    inference(superposition,[],[f389,f19]) ).

fof(f19,axiom,
    ( sk_c6 = multiply(sk_c3,sk_c4)
    | sk_c7 = inverse(sk_c1) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_16) ).

fof(f1913,plain,
    ! [X0] :
      ( sk_c5 != multiply(sk_c6,sk_c5)
      | identity != multiply(inverse(X0),sk_c5) ),
    inference(forward_demodulation,[],[f1912,f558]) ).

fof(f558,plain,
    sk_c5 = sk_c7,
    inference(duplicate_literal_removal,[],[f557]) ).

fof(f557,plain,
    ( sk_c5 = sk_c7
    | sk_c5 = sk_c7 ),
    inference(forward_demodulation,[],[f556,f1]) ).

fof(f556,plain,
    ( sk_c7 = multiply(identity,sk_c5)
    | sk_c5 = sk_c7 ),
    inference(forward_demodulation,[],[f555,f539]) ).

fof(f555,plain,
    ( sk_c5 = sk_c7
    | multiply(sk_c6,sk_c5) = sk_c7 ),
    inference(forward_demodulation,[],[f542,f1]) ).

fof(f542,plain,
    ( sk_c5 = multiply(identity,sk_c7)
    | multiply(sk_c6,sk_c5) = sk_c7 ),
    inference(superposition,[],[f4,f539]) ).

fof(f4,axiom,
    ( sk_c5 = multiply(sk_c6,sk_c7)
    | multiply(sk_c6,sk_c5) = sk_c7 ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_1) ).

fof(f1912,plain,
    ! [X0] :
      ( identity != multiply(inverse(X0),sk_c5)
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(subsumption_resolution,[],[f1911,f1]) ).

fof(f1911,plain,
    ! [X0] :
      ( sk_c5 != multiply(identity,sk_c5)
      | identity != multiply(inverse(X0),sk_c5)
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(forward_demodulation,[],[f1910,f539]) ).

fof(f1910,plain,
    ! [X0] :
      ( sk_c5 != multiply(sk_c6,sk_c5)
      | identity != multiply(inverse(X0),sk_c5)
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(forward_demodulation,[],[f1909,f558]) ).

fof(f1909,plain,
    ! [X0] :
      ( identity != multiply(inverse(X0),sk_c5)
      | multiply(sk_c6,sk_c5) != sk_c7
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(subsumption_resolution,[],[f1908,f539]) ).

fof(f1908,plain,
    ! [X0] :
      ( identity != sk_c6
      | identity != multiply(inverse(X0),sk_c5)
      | multiply(sk_c6,sk_c5) != sk_c7
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(forward_demodulation,[],[f1907,f203]) ).

fof(f1907,plain,
    ! [X0] :
      ( identity != multiply(inverse(X0),sk_c5)
      | sk_c6 != multiply(X0,inverse(X0))
      | multiply(sk_c6,sk_c5) != sk_c7
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(forward_demodulation,[],[f1906,f539]) ).

fof(f1906,plain,
    ! [X0] :
      ( sk_c6 != multiply(inverse(X0),sk_c5)
      | sk_c6 != multiply(X0,inverse(X0))
      | multiply(sk_c6,sk_c5) != sk_c7
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(forward_demodulation,[],[f1905,f558]) ).

fof(f1905,plain,
    ! [X0] :
      ( sk_c6 != multiply(inverse(X0),sk_c7)
      | sk_c6 != multiply(X0,inverse(X0))
      | multiply(sk_c6,sk_c5) != sk_c7
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(subsumption_resolution,[],[f1904,f539]) ).

fof(f1904,plain,
    ! [X0] :
      ( identity != sk_c6
      | sk_c6 != multiply(inverse(X0),sk_c7)
      | sk_c6 != multiply(X0,inverse(X0))
      | multiply(sk_c6,sk_c5) != sk_c7
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(forward_demodulation,[],[f1903,f1845]) ).

fof(f1845,plain,
    identity = multiply(sk_c5,sk_c5),
    inference(duplicate_literal_removal,[],[f1844]) ).

fof(f1844,plain,
    ( identity = multiply(sk_c5,sk_c5)
    | identity = multiply(sk_c5,sk_c5) ),
    inference(forward_demodulation,[],[f1843,f539]) ).

fof(f1843,plain,
    ( sk_c6 = multiply(sk_c5,sk_c5)
    | identity = multiply(sk_c5,sk_c5) ),
    inference(forward_demodulation,[],[f1842,f558]) ).

fof(f1842,plain,
    ( identity = multiply(sk_c5,sk_c5)
    | sk_c6 = multiply(sk_c7,sk_c5) ),
    inference(forward_demodulation,[],[f1841,f539]) ).

fof(f1841,plain,
    ( sk_c6 = multiply(sk_c5,sk_c5)
    | sk_c6 = multiply(sk_c7,sk_c5) ),
    inference(forward_demodulation,[],[f1831,f558]) ).

fof(f1831,plain,
    ( sk_c6 = multiply(sk_c5,sk_c7)
    | sk_c6 = multiply(sk_c7,sk_c5) ),
    inference(superposition,[],[f1614,f24]) ).

fof(f24,axiom,
    ( sk_c7 = multiply(sk_c2,sk_c6)
    | sk_c6 = multiply(sk_c7,sk_c5) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_21) ).

fof(f1614,plain,
    ! [X0] : multiply(sk_c5,multiply(sk_c2,X0)) = X0,
    inference(superposition,[],[f108,f1574]) ).

fof(f1574,plain,
    sk_c5 = inverse(sk_c2),
    inference(unit_resulting_resolution,[],[f2,f1168]) ).

fof(f1168,plain,
    ! [X0] :
      ( identity != multiply(inverse(X0),sk_c5)
      | sk_c5 = inverse(sk_c2) ),
    inference(subsumption_resolution,[],[f1167,f1]) ).

fof(f1167,plain,
    ! [X0] :
      ( sk_c5 != multiply(identity,sk_c5)
      | identity != multiply(inverse(X0),sk_c5)
      | sk_c5 = inverse(sk_c2) ),
    inference(forward_demodulation,[],[f1166,f539]) ).

fof(f1166,plain,
    ! [X0] :
      ( sk_c5 != multiply(sk_c6,sk_c5)
      | identity != multiply(inverse(X0),sk_c5)
      | sk_c5 = inverse(sk_c2) ),
    inference(forward_demodulation,[],[f1165,f558]) ).

fof(f1165,plain,
    ! [X0] :
      ( identity != multiply(inverse(X0),sk_c5)
      | sk_c5 = inverse(sk_c2)
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(subsumption_resolution,[],[f1164,f1]) ).

fof(f1164,plain,
    ! [X0] :
      ( sk_c5 != multiply(identity,sk_c5)
      | identity != multiply(inverse(X0),sk_c5)
      | sk_c5 = inverse(sk_c2)
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(forward_demodulation,[],[f1163,f539]) ).

fof(f1163,plain,
    ! [X0] :
      ( sk_c5 != multiply(sk_c6,sk_c5)
      | identity != multiply(inverse(X0),sk_c5)
      | sk_c5 = inverse(sk_c2)
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(forward_demodulation,[],[f1162,f558]) ).

fof(f1162,plain,
    ! [X0] :
      ( identity != multiply(inverse(X0),sk_c5)
      | sk_c5 = inverse(sk_c2)
      | multiply(sk_c6,sk_c5) != sk_c7
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(subsumption_resolution,[],[f1161,f539]) ).

fof(f1161,plain,
    ! [X0] :
      ( identity != sk_c6
      | identity != multiply(inverse(X0),sk_c5)
      | sk_c5 = inverse(sk_c2)
      | multiply(sk_c6,sk_c5) != sk_c7
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(forward_demodulation,[],[f1160,f203]) ).

fof(f1160,plain,
    ! [X0] :
      ( identity != multiply(inverse(X0),sk_c5)
      | sk_c5 = inverse(sk_c2)
      | sk_c6 != multiply(X0,inverse(X0))
      | multiply(sk_c6,sk_c5) != sk_c7
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(forward_demodulation,[],[f1159,f539]) ).

fof(f1159,plain,
    ! [X0] :
      ( sk_c6 != multiply(inverse(X0),sk_c5)
      | sk_c5 = inverse(sk_c2)
      | sk_c6 != multiply(X0,inverse(X0))
      | multiply(sk_c6,sk_c5) != sk_c7
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(forward_demodulation,[],[f1158,f558]) ).

fof(f1158,plain,
    ! [X0] :
      ( sk_c5 = inverse(sk_c2)
      | sk_c6 != multiply(inverse(X0),sk_c7)
      | sk_c6 != multiply(X0,inverse(X0))
      | multiply(sk_c6,sk_c5) != sk_c7
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(subsumption_resolution,[],[f1157,f629]) ).

fof(f629,plain,
    ( identity = multiply(sk_c5,sk_c5)
    | sk_c5 = inverse(sk_c2) ),
    inference(forward_demodulation,[],[f628,f558]) ).

fof(f628,plain,
    ( identity = multiply(sk_c5,sk_c5)
    | sk_c7 = inverse(sk_c2) ),
    inference(forward_demodulation,[],[f586,f539]) ).

fof(f586,plain,
    ( sk_c6 = multiply(sk_c5,sk_c5)
    | sk_c7 = inverse(sk_c2) ),
    inference(superposition,[],[f23,f558]) ).

fof(f23,axiom,
    ( sk_c6 = multiply(sk_c7,sk_c5)
    | sk_c7 = inverse(sk_c2) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_20) ).

fof(f1157,plain,
    ! [X0] :
      ( identity != multiply(sk_c5,sk_c5)
      | sk_c5 = inverse(sk_c2)
      | sk_c6 != multiply(inverse(X0),sk_c7)
      | sk_c6 != multiply(X0,inverse(X0))
      | multiply(sk_c6,sk_c5) != sk_c7
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(forward_demodulation,[],[f1156,f539]) ).

fof(f1156,plain,
    ! [X0] :
      ( sk_c6 != multiply(sk_c5,sk_c5)
      | sk_c5 = inverse(sk_c2)
      | sk_c6 != multiply(inverse(X0),sk_c7)
      | sk_c6 != multiply(X0,inverse(X0))
      | multiply(sk_c6,sk_c5) != sk_c7
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(forward_demodulation,[],[f1155,f558]) ).

fof(f1155,plain,
    ! [X0] :
      ( sk_c5 = inverse(sk_c2)
      | sk_c6 != multiply(sk_c7,sk_c5)
      | sk_c6 != multiply(inverse(X0),sk_c7)
      | sk_c6 != multiply(X0,inverse(X0))
      | multiply(sk_c6,sk_c5) != sk_c7
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(subsumption_resolution,[],[f1154,f541]) ).

fof(f541,plain,
    sP0,
    inference(unit_resulting_resolution,[],[f217,f539,f48]) ).

fof(f48,plain,
    ( sk_c7 != inverse(inverse(sk_c7))
    | identity != sk_c6
    | sP0 ),
    inference(superposition,[],[f30,f2]) ).

fof(f30,plain,
    ! [X3] :
      ( sk_c6 != multiply(X3,sk_c7)
      | sk_c7 != inverse(X3)
      | sP0 ),
    inference(cnf_transformation,[],[f30_D]) ).

fof(f30_D,plain,
    ( ! [X3] :
        ( sk_c6 != multiply(X3,sk_c7)
        | sk_c7 != inverse(X3) )
  <=> ~ sP0 ),
    introduced(general_splitting_component_introduction,[new_symbols(naming,[sP0])]) ).

fof(f217,plain,
    ! [X0] : inverse(inverse(X0)) = X0,
    inference(superposition,[],[f204,f116]) ).

fof(f116,plain,
    ! [X0] : multiply(inverse(inverse(X0)),identity) = X0,
    inference(superposition,[],[f108,f2]) ).

fof(f204,plain,
    ! [X0] : multiply(X0,identity) = X0,
    inference(superposition,[],[f118,f116]) ).

fof(f1154,plain,
    ! [X0] :
      ( sk_c5 = inverse(sk_c2)
      | sk_c6 != multiply(sk_c7,sk_c5)
      | sk_c6 != multiply(inverse(X0),sk_c7)
      | sk_c6 != multiply(X0,inverse(X0))
      | multiply(sk_c6,sk_c5) != sk_c7
      | ~ sP0
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(resolution,[],[f1148,f33]) ).

fof(f33,plain,
    ! [X5] :
      ( ~ sP1
      | sk_c6 != multiply(sk_c7,sk_c5)
      | sk_c6 != multiply(inverse(X5),sk_c7)
      | sk_c6 != multiply(X5,inverse(X5))
      | multiply(sk_c6,sk_c5) != sk_c7
      | ~ sP0
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(general_splitting,[],[f31,f32_D]) ).

fof(f32,plain,
    ! [X4] :
      ( sk_c7 != multiply(X4,sk_c6)
      | sk_c7 != inverse(X4)
      | sP1 ),
    inference(cnf_transformation,[],[f32_D]) ).

fof(f32_D,plain,
    ( ! [X4] :
        ( sk_c7 != multiply(X4,sk_c6)
        | sk_c7 != inverse(X4) )
  <=> ~ sP1 ),
    introduced(general_splitting_component_introduction,[new_symbols(naming,[sP1])]) ).

fof(f31,plain,
    ! [X4,X5] :
      ( sk_c7 != inverse(X4)
      | sk_c5 != multiply(sk_c6,sk_c7)
      | sk_c6 != multiply(sk_c7,sk_c5)
      | sk_c6 != multiply(inverse(X5),sk_c7)
      | sk_c6 != multiply(X5,inverse(X5))
      | sk_c7 != multiply(X4,sk_c6)
      | multiply(sk_c6,sk_c5) != sk_c7
      | ~ sP0 ),
    inference(general_splitting,[],[f29,f30_D]) ).

fof(f29,plain,
    ! [X3,X4,X5] :
      ( sk_c7 != inverse(X3)
      | sk_c7 != inverse(X4)
      | sk_c5 != multiply(sk_c6,sk_c7)
      | sk_c6 != multiply(sk_c7,sk_c5)
      | sk_c6 != multiply(inverse(X5),sk_c7)
      | sk_c6 != multiply(X3,sk_c7)
      | sk_c6 != multiply(X5,inverse(X5))
      | sk_c7 != multiply(X4,sk_c6)
      | multiply(sk_c6,sk_c5) != sk_c7 ),
    inference(equality_resolution,[],[f28]) ).

fof(f28,axiom,
    ! [X3,X6,X4,X5] :
      ( sk_c7 != inverse(X3)
      | sk_c7 != inverse(X4)
      | inverse(X5) != X6
      | sk_c5 != multiply(sk_c6,sk_c7)
      | sk_c6 != multiply(sk_c7,sk_c5)
      | sk_c6 != multiply(X6,sk_c7)
      | sk_c6 != multiply(X3,sk_c7)
      | sk_c6 != multiply(X5,X6)
      | sk_c7 != multiply(X4,sk_c6)
      | multiply(sk_c6,sk_c5) != sk_c7 ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this_25) ).

fof(f1148,plain,
    ( sP1
    | sk_c5 = inverse(sk_c2) ),
    inference(forward_demodulation,[],[f1147,f558]) ).

fof(f1147,plain,
    ( sP1
    | sk_c7 = inverse(sk_c2) ),
    inference(subsumption_resolution,[],[f1146,f217]) ).

fof(f1146,plain,
    ( sk_c7 != inverse(inverse(sk_c7))
    | sP1
    | sk_c7 = inverse(sk_c2) ),
    inference(subsumption_resolution,[],[f1135,f558]) ).

fof(f1135,plain,
    ( sk_c5 != sk_c7
    | sk_c7 != inverse(inverse(sk_c7))
    | sP1
    | sk_c7 = inverse(sk_c2) ),
    inference(superposition,[],[f32,f126]) ).

fof(f126,plain,
    ( sk_c5 = multiply(inverse(sk_c7),sk_c6)
    | sk_c7 = inverse(sk_c2) ),
    inference(superposition,[],[f108,f23]) ).

fof(f1903,plain,
    ! [X0] :
      ( sk_c6 != multiply(sk_c5,sk_c5)
      | sk_c6 != multiply(inverse(X0),sk_c7)
      | sk_c6 != multiply(X0,inverse(X0))
      | multiply(sk_c6,sk_c5) != sk_c7
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(forward_demodulation,[],[f1902,f558]) ).

fof(f1902,plain,
    ! [X0] :
      ( sk_c6 != multiply(sk_c7,sk_c5)
      | sk_c6 != multiply(inverse(X0),sk_c7)
      | sk_c6 != multiply(X0,inverse(X0))
      | multiply(sk_c6,sk_c5) != sk_c7
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(subsumption_resolution,[],[f1901,f541]) ).

fof(f1901,plain,
    ! [X0] :
      ( sk_c6 != multiply(sk_c7,sk_c5)
      | sk_c6 != multiply(inverse(X0),sk_c7)
      | sk_c6 != multiply(X0,inverse(X0))
      | multiply(sk_c6,sk_c5) != sk_c7
      | ~ sP0
      | sk_c5 != multiply(sk_c6,sk_c7) ),
    inference(resolution,[],[f1864,f33]) ).

fof(f1864,plain,
    sP1,
    inference(unit_resulting_resolution,[],[f1574,f1856,f572]) ).

fof(f572,plain,
    ! [X0] :
      ( inverse(X0) != sk_c5
      | sk_c5 != X0
      | sP1 ),
    inference(forward_demodulation,[],[f571,f558]) ).

fof(f571,plain,
    ! [X0] :
      ( sk_c5 != X0
      | inverse(X0) != sk_c7
      | sP1 ),
    inference(forward_demodulation,[],[f570,f558]) ).

fof(f570,plain,
    ! [X0] :
      ( sk_c7 != X0
      | inverse(X0) != sk_c7
      | sP1 ),
    inference(forward_demodulation,[],[f549,f204]) ).

fof(f549,plain,
    ! [X0] :
      ( sk_c7 != multiply(X0,identity)
      | inverse(X0) != sk_c7
      | sP1 ),
    inference(superposition,[],[f32,f539]) ).

fof(f1856,plain,
    sk_c5 = sk_c2,
    inference(superposition,[],[f1854,f204]) ).

fof(f1854,plain,
    sk_c5 = multiply(sk_c2,identity),
    inference(forward_demodulation,[],[f1852,f1621]) ).

fof(f1621,plain,
    sk_c2 = inverse(sk_c5),
    inference(superposition,[],[f217,f1574]) ).

fof(f1852,plain,
    sk_c5 = multiply(inverse(sk_c5),identity),
    inference(superposition,[],[f108,f1845]) ).

fof(f1932,plain,
    identity = multiply(inverse(inverse(sk_c5)),sk_c5),
    inference(superposition,[],[f155,f1881]) ).

fof(f1881,plain,
    sk_c5 = inverse(sk_c5),
    inference(superposition,[],[f1574,f1856]) ).

fof(f155,plain,
    ! [X0] : identity = multiply(inverse(inverse(inverse(X0))),X0),
    inference(superposition,[],[f108,f116]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.04/0.13  % Problem    : GRP353-1 : TPTP v8.1.2. Released v2.5.0.
% 0.04/0.15  % Command    : vampire --mode casc_sat -m 16384 --cores 7 -t %d %s
% 0.15/0.36  % Computer : n013.cluster.edu
% 0.15/0.36  % Model    : x86_64 x86_64
% 0.15/0.36  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.15/0.36  % Memory   : 8042.1875MB
% 0.15/0.36  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.15/0.36  % CPULimit   : 300
% 0.15/0.36  % WCLimit    : 300
% 0.15/0.36  % DateTime   : Tue Apr 30 04:20:19 EDT 2024
% 0.15/0.36  % CPUTime    : 
% 0.15/0.36  % (6660)Running in auto input_syntax mode. Trying TPTP
% 0.22/0.38  % (6663)WARNING: value z3 for option sas not known
% 0.22/0.38  % (6664)fmb+10_1_bce=on:fmbsr=1.5:nm=32_533 on theBenchmark for (533ds/0Mi)
% 0.22/0.38  % (6665)ott+10_10:1_add=off:afr=on:amm=off:anc=all:bd=off:bs=on:fsr=off:irw=on:lma=on:msp=off:nm=4:nwc=4.0:sac=on:sp=reverse_frequency_531 on theBenchmark for (531ds/0Mi)
% 0.22/0.38  % (6662)fmb+10_1_bce=on:fmbdsb=on:fmbes=contour:fmbswr=3:fde=none:nm=0_793 on theBenchmark for (793ds/0Mi)
% 0.22/0.38  % (6663)dis+2_11_add=large:afr=on:amm=off:bd=off:bce=on:fsd=off:fde=none:gs=on:gsaa=full_model:gsem=off:irw=on:msp=off:nm=4:nwc=1.3:sas=z3:sims=off:sac=on:sp=reverse_arity_569 on theBenchmark for (569ds/0Mi)
% 0.22/0.38  % (6666)ott-10_8_av=off:bd=preordered:bs=on:fsd=off:fsr=off:fde=unused:irw=on:lcm=predicate:lma=on:nm=4:nwc=1.7:sp=frequency_522 on theBenchmark for (522ds/0Mi)
% 0.22/0.38  % (6661)fmb+10_1_bce=on:fmbas=function:fmbsr=1.2:fde=unused:nm=0_846 on theBenchmark for (846ds/0Mi)
% 0.22/0.38  % (6667)ott+1_64_av=off:bd=off:bce=on:fsd=off:fde=unused:gsp=on:irw=on:lcm=predicate:lma=on:nm=2:nwc=1.1:sims=off:urr=on_497 on theBenchmark for (497ds/0Mi)
% 0.22/0.38  TRYING [1]
% 0.22/0.38  TRYING [2]
% 0.22/0.38  TRYING [1]
% 0.22/0.38  TRYING [3]
% 0.22/0.39  TRYING [2]
% 0.22/0.39  TRYING [3]
% 0.22/0.39  TRYING [4]
% 0.22/0.41  TRYING [5]
% 0.22/0.41  TRYING [4]
% 0.22/0.42  % (6667)First to succeed.
% 0.22/0.42  % (6667)Refutation found. Thanks to Tanya!
% 0.22/0.42  % SZS status Unsatisfiable for theBenchmark
% 0.22/0.42  % SZS output start Proof for theBenchmark
% See solution above
% 0.22/0.42  % (6667)------------------------------
% 0.22/0.42  % (6667)Version: Vampire 4.8 (commit 8e9376e55 on 2024-01-18 13:49:33 +0100)
% 0.22/0.42  % (6667)Termination reason: Refutation
% 0.22/0.42  
% 0.22/0.42  % (6667)Memory used [KB]: 1056
% 0.22/0.42  % (6667)Time elapsed: 0.042 s
% 0.22/0.42  % (6667)Instructions burned: 82 (million)
% 0.22/0.42  % (6667)------------------------------
% 0.22/0.42  % (6667)------------------------------
% 0.22/0.42  % (6660)Success in time 0.048 s
%------------------------------------------------------------------------------