%------------------------------------------------------------------------------
% File : Prover9---2026-6A
% Problem : SWV874-1 : TPTP v9.3.1. Released v4.1.0.
% Transfm : none
% Format : tptp:raw
% Command : prover9 -casc 300 -f /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n026.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8046.5625MB
% OS : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit : 300s
% DateTime : Sun Sep 27 09:09:15 AM UTC 2026
% Result : Unsatisfiable 10.71s 1.84s
% Output : CNFRefutation 10.71s
% Verified :
% SZS Type : Refutation
% Derivation depth : 2
% Number of leaves : 2
% Syntax : Number of formulae : 5 ( 5 unt; 0 def)
% Number of atoms : 5 ( 0 equ)
% Maximal formula atoms : 1 ( 1 avg)
% Number of connectives : 2 ( 2 ~; 0 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 2 ( 2 avg)
% Maximal term depth : 4 ( 2 avg)
% Number of predicates : 2 ( 1 usr; 1 prp; 0-1 aty)
% Number of functors : 4 ( 4 usr; 2 con; 0-2 aty)
% Number of variables : 2 ( 0 sgn 1 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(cls_evalc_OSkip_0,axiom,
! [VAR_0] : hBOOL(hAPP(hAPP(c_Natural_Oevalc(c_Com_Ocom_OSKIP),VAR_0),VAR_0)),
file('theBenchmark.p',cls_evalc_OSkip_0) ).
cnf(c_1158,plain,
hBOOL(hAPP(hAPP(c_Natural_Oevalc(c_Com_Ocom_OSKIP),A),A)),
inference(clausify,[status(thm)],[cls_evalc_OSkip_0]) ).
fof(cls_conjecture_0,axiom,
~ hBOOL(hAPP(hAPP(c_Natural_Oevalc(c_Com_Ocom_OSKIP),v_x),v_x)),
file('theBenchmark.p',cls_conjecture_0) ).
cnf(c_1180,plain,
~ hBOOL(hAPP(hAPP(c_Natural_Oevalc(c_Com_Ocom_OSKIP),v_x),v_x)),
inference(clausify,[status(thm)],[cls_conjecture_0]) ).
cnf(c_1181,plain,
$false,
inference(resolve,[status(thm)],[c_1158,c_1180]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SWV874-1 : TPTP v9.3.1. Released v4.1.0.
% 0.00/0.04 % Command : prover9 -casc 300 -f /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.11/0.37 % Computer : n026.cluster.edu
% 0.11/0.37 % Model : x86_64 x86_64
% 0.11/0.37 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.37 % Memory : 8046.5625MB
% 0.11/0.37 % OS : Linux 6.8.0-71-generic
% 0.11/0.37 % CPULimit : 300
% 0.11/0.37 % WCLimit : 300
% 0.11/0.37 % DateTime : Sat Sep 26 15:08:40 UTC 2026
% 0.11/0.37 % CPUTime :
% 0.11/0.37 % Prover9 (64) version 2026-6A, July 2026, CASC-J13.
% 0.11/0.37 % Process 1314075 was started by sandbox on n026,
% 0.11/0.37 % Sat Sep 26 15:08:40 2026
% 0.11/0.37 % The command was "/export/starexec/sandbox/solver/bin/prover9 -casc 300 -f /export/starexec/sandbox/benchmark/theBenchmark.p".
% 0.11/0.42
% 0.11/0.42 % From the command line: assign(max_seconds, 300).
% 10.71/1.84
% 10.71/1.84 % SZS status Unsatisfiable for theBenchmark
% 10.71/1.84
% 10.71/1.84 % Proof 1 at 1.39 (+ 0.02) seconds.
% 10.71/1.84 % Length of proof is 3.
% 10.71/1.84 % Level of proof is 1.
% 10.71/1.84 % Maximum clause weight is 29.000.
% 10.71/1.84 % Given clauses 0.
% 10.71/1.84
% 10.71/1.84 % SZS output start CNFRefutation for theBenchmark
% See solution above
%------------------------------------------------------------------------------