%------------------------------------------------------------------------------
% File : Prover9---2026-6A
% Problem : GRP123-4.003 : TPTP v9.3.1. Bugfixed v1.2.1.
% Transfm : none
% Format : tptp:raw
% Command : prover9 -casc 300 -f /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n003.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 07:27:36 AM UTC 2026
% Result : Unsatisfiable 0.11s 0.54s
% Output : CNFRefutation 0.11s
% Verified :
% SZS Type : Refutation
% Derivation depth : 8
% Number of leaves : 10
% Syntax : Number of formulae : 40 ( 20 unt; 0 def)
% Number of atoms : 83 ( 0 equ)
% Maximal formula atoms : 5 ( 2 avg)
% Number of connectives : 90 ( 47 ~; 43 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 12 ( 3 avg)
% Maximal term depth : 1 ( 1 avg)
% Number of predicates : 4 ( 3 usr; 1 prp; 0-3 aty)
% Number of functors : 3 ( 3 usr; 3 con; 0-0 aty)
% Number of variables : 49 ( 0 sgn 17 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(e_3_is_not_e_2,axiom,
~ equalish(e_3,e_2),
file('theBenchmark.p',e_3_is_not_e_2) ).
cnf(c_2,plain,
~ equalish(e_3,e_2),
inference(clausify,[status(thm)],[e_3_is_not_e_2]) ).
fof(e_3_is_not_e_1,axiom,
~ equalish(e_3,e_1),
file('theBenchmark.p',e_3_is_not_e_1) ).
cnf(c_3,plain,
~ equalish(e_3,e_1),
inference(clausify,[status(thm)],[e_3_is_not_e_1]) ).
fof(product_right_cancellation,axiom,
! [VAR_0,VAR_1,VAR_2,VAR_3] :
( equalish(VAR_1,VAR_3)
| ~ product(VAR_0,VAR_3,VAR_2)
| ~ product(VAR_0,VAR_1,VAR_2) ),
file('theBenchmark.p',product_right_cancellation) ).
cnf(c_8,plain,
( equalish(B,D)
| ~ product(A,D,C)
| ~ product(A,B,C) ),
inference(clausify,[status(thm)],[product_right_cancellation]) ).
fof(product_left_cancellation,axiom,
! [VAR_0,VAR_1,VAR_2,VAR_3] :
( equalish(VAR_0,VAR_3)
| ~ product(VAR_3,VAR_1,VAR_2)
| ~ product(VAR_0,VAR_1,VAR_2) ),
file('theBenchmark.p',product_left_cancellation) ).
cnf(c_9,plain,
( equalish(A,D)
| ~ product(D,B,C)
| ~ product(A,B,C) ),
inference(clausify,[status(thm)],[product_left_cancellation]) ).
fof(qg1_2,axiom,
! [VAR_0,VAR_1,VAR_2,VAR_3,VAR_4,VAR_5] :
( equalish(VAR_1,VAR_4)
| ~ product(VAR_5,VAR_4,VAR_3)
| ~ product(VAR_5,VAR_1,VAR_0)
| ~ product(VAR_3,VAR_4,VAR_2)
| ~ product(VAR_0,VAR_1,VAR_2) ),
file('theBenchmark.p',qg1_2) ).
cnf(c_11,plain,
( equalish(B,E)
| ~ product(F,E,D)
| ~ product(F,B,A)
| ~ product(D,E,C)
| ~ product(A,B,C) ),
inference(clausify,[status(thm)],[qg1_2]) ).
cnf(c_14,plain,
( ~ product(D,e_2,C)
| ~ product(D,e_3,A)
| ~ product(C,e_2,B)
| ~ product(A,e_3,B) ),
inference(resolve,[status(thm)],[c_11,c_2]) ).
cnf(c_19,plain,
( ~ product(e_1,A,B)
| ~ product(e_3,A,B) ),
inference(resolve,[status(thm)],[c_9,c_3]) ).
cnf(c_20,plain,
( ~ product(e_2,A,B)
| ~ product(e_3,A,B) ),
inference(resolve,[status(thm)],[c_9,c_2]) ).
cnf(c_22,plain,
( ~ product(A,e_1,B)
| ~ product(A,e_3,B) ),
inference(resolve,[status(thm)],[c_8,c_3]) ).
cnf(c_23,plain,
( ~ product(A,e_2,B)
| ~ product(A,e_3,B) ),
inference(resolve,[status(thm)],[c_8,c_2]) ).
fof(product_idempotence,axiom,
! [VAR_0] : product(VAR_0,VAR_0,VAR_0),
file('theBenchmark.p',product_idempotence) ).
cnf(c_27,plain,
product(A,A,A),
inference(clausify,[status(thm)],[product_idempotence]) ).
fof(product_total_function1,axiom,
! [VAR_0,VAR_1] :
( product(VAR_0,VAR_1,e_3)
| product(VAR_0,VAR_1,e_2)
| product(VAR_0,VAR_1,e_1)
| ~ group_element(VAR_1)
| ~ group_element(VAR_0) ),
file('theBenchmark.p',product_total_function1) ).
cnf(c_28,plain,
( product(A,B,e_3)
| product(A,B,e_2)
| product(A,B,e_1)
| ~ group_element(B)
| ~ group_element(A) ),
inference(clausify,[status(thm)],[product_total_function1]) ).
fof(element_3,axiom,
group_element(e_3),
file('theBenchmark.p',element_3) ).
cnf(c_29,plain,
group_element(e_3),
inference(clausify,[status(thm)],[element_3]) ).
fof(element_2,axiom,
group_element(e_2),
file('theBenchmark.p',element_2) ).
cnf(c_30,plain,
group_element(e_2),
inference(clausify,[status(thm)],[element_2]) ).
fof(element_1,axiom,
group_element(e_1),
file('theBenchmark.p',element_1) ).
cnf(c_31,plain,
group_element(e_1),
inference(clausify,[status(thm)],[element_1]) ).
cnf(c_39,plain,
( ~ product(B,e_3,A)
| ~ product(B,e_2,B)
| ~ product(A,e_3,B) ),
inference(factor,[status(thm)],[c_14]) ).
cnf(c_55,plain,
~ product(e_2,e_3,e_2),
inference(resolve,[status(thm)],[c_27,c_23]) ).
cnf(c_57,plain,
~ product(e_1,e_3,e_1),
inference(resolve,[status(thm)],[c_27,c_22]) ).
cnf(c_62,plain,
~ product(e_2,e_3,e_3),
inference(resolve,[status(thm)],[c_27,c_20]) ).
cnf(c_64,plain,
~ product(e_1,e_3,e_3),
inference(resolve,[status(thm)],[c_27,c_19]) ).
cnf(c_91,plain,
( product(A,e_3,e_3)
| product(A,e_3,e_2)
| product(A,e_3,e_1)
| ~ group_element(A) ),
inference(resolve,[status(thm)],[c_29,c_28]) ).
cnf(c_121,plain,
( product(e_1,e_3,e_3)
| product(e_1,e_3,e_2)
| product(e_1,e_3,e_1) ),
inference(resolve,[status(thm)],[c_91,c_31]) ).
cnf(c_122,plain,
( product(e_1,e_3,e_3)
| product(e_1,e_3,e_2) ),
inference(resolve,[status(thm)],[c_57,c_121]) ).
cnf(c_118,plain,
product(e_1,e_3,e_2),
inference(resolve,[status(thm)],[c_64,c_122]) ).
cnf(c_123,plain,
( product(e_2,e_3,e_3)
| product(e_2,e_3,e_2)
| product(e_2,e_3,e_1) ),
inference(resolve,[status(thm)],[c_91,c_30]) ).
cnf(c_124,plain,
( product(e_2,e_3,e_3)
| product(e_2,e_3,e_1) ),
inference(resolve,[status(thm)],[c_55,c_123]) ).
cnf(c_119,plain,
product(e_2,e_3,e_1),
inference(resolve,[status(thm)],[c_62,c_124]) ).
cnf(c_125,plain,
( ~ product(e_2,e_3,e_1)
| ~ product(e_2,e_2,e_2) ),
inference(resolve,[status(thm)],[c_118,c_39]) ).
cnf(c_126,plain,
~ product(e_2,e_3,e_1),
inference(resolve,[status(thm)],[c_27,c_125]) ).
cnf(c_120,plain,
$false,
inference(resolve,[status(thm)],[c_119,c_126]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : GRP123-4.003 : TPTP v9.3.1. Bugfixed v1.2.1.
% 0.00/0.04 % Command : prover9 -casc 300 -f /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.11/0.52 % Computer : n003.cluster.edu
% 0.11/0.52 % Model : x86_64 x86_64
% 0.11/0.52 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.52 % Memory : 8046.5625MB
% 0.11/0.52 % OS : Linux 6.8.0-71-generic
% 0.11/0.52 % CPULimit : 300
% 0.11/0.52 % WCLimit : 300
% 0.11/0.52 % DateTime : Fri Sep 25 14:25:23 UTC 2026
% 0.11/0.52 % CPUTime :
% 0.11/0.52 % Prover9 (64) version 2026-6A, July 2026, CASC-J13.
% 0.11/0.52 % Process 373257 was started by sandbox on n003,
% 0.11/0.52 % Fri Sep 25 14:25:23 2026
% 0.11/0.52 % The command was "/export/starexec/sandbox/solver/bin/prover9 -casc 300 -f /export/starexec/sandbox/benchmark/theBenchmark.p".
% 0.11/0.52
% 0.11/0.52 % From the command line: assign(max_seconds, 300).
% 0.11/0.54
% 0.11/0.54 % SZS status Unsatisfiable for theBenchmark
% 0.11/0.54
% 0.11/0.54 % Proof 1 at 0.01 (+ 0.00) seconds.
% 0.11/0.54 % Length of proof is 24.
% 0.11/0.54 % Level of proof is 4.
% 0.11/0.54 % Maximum clause weight is 18.000.
% 0.11/0.54 % Given clauses 42.
% 0.11/0.54
% 0.11/0.54 % SZS output start CNFRefutation for theBenchmark
% See solution above
%------------------------------------------------------------------------------