%------------------------------------------------------------------------------
% File : Prover9---2026-6A
% Problem : GRP679-1 : TPTP v9.3.1. Released v4.0.0.
% Transfm : none
% Format : tptp:raw
% Command : prover9 -casc 300 -f /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n013.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 07:31:10 AM UTC 2026
% Result : Unsatisfiable 0.10s 6.02s
% Output : CNFRefutation 0.10s
% Verified :
% SZS Type : Refutation
% Derivation depth : 8
% Number of leaves : 5
% Syntax : Number of formulae : 22 ( 22 unt; 0 def)
% Number of atoms : 22 ( 21 equ)
% Maximal formula atoms : 1 ( 1 avg)
% Number of connectives : 5 ( 5 ~; 0 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 4 ( 2 avg)
% Maximal term depth : 5 ( 2 avg)
% Number of predicates : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 5 ( 5 usr; 3 con; 0-2 aty)
% Number of variables : 27 ( 0 sgn 7 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(c02,axiom,
! [VAR_0,VAR_1] : ld(VAR_0,mult(VAR_0,VAR_1)) = VAR_1,
file('theBenchmark.p',c02) ).
cnf(c_2,plain,
ld(A,mult(A,B)) = B,
inference(clausify,[status(thm)],[c02]) ).
fof(c06,axiom,
! [VAR_0] : mult(unit,VAR_0) = VAR_0,
file('theBenchmark.p',c06) ).
cnf(c_6,plain,
mult(unit,A) = A,
inference(clausify,[status(thm)],[c06]) ).
fof(c07,axiom,
! [VAR_0,VAR_1,VAR_2] : mult(VAR_0,mult(VAR_1,mult(VAR_0,VAR_2))) = mult(mult(VAR_0,mult(VAR_1,VAR_0)),VAR_2),
file('theBenchmark.p',c07) ).
cnf(c_7,plain,
mult(A,mult(B,mult(A,C))) = mult(mult(A,mult(B,A)),C),
inference(clausify,[status(thm)],[c07]) ).
cnf(c_8,plain,
mult(mult(A,mult(B,A)),C) = mult(A,mult(B,mult(A,C))),
inference(copy,[status(thm)],[c_7]) ).
fof(c08,axiom,
! [VAR_0] : mult(op_c,VAR_0) = mult(VAR_0,op_c),
file('theBenchmark.p',c08) ).
cnf(c_9,plain,
mult(op_c,A) = mult(A,op_c),
inference(clausify,[status(thm)],[c08]) ).
fof(goals,axiom,
mult(mult(op_c,op_c),a) != mult(a,mult(op_c,op_c)),
file('theBenchmark.p',goals) ).
cnf(c_10,plain,
mult(mult(op_c,op_c),a) != mult(a,mult(op_c,op_c)),
inference(clausify,[status(thm)],[goals]) ).
cnf(c_158,plain,
mult(mult(A,A),B) = mult(A,mult(unit,mult(A,B))),
inference(paramod,[status(thm)],[c_6,c_8]) ).
cnf(c_22,plain,
mult(mult(A,A),B) = mult(A,mult(A,B)),
inference(paramod,[status(thm)],[c_6,c_158]) ).
cnf(c_159,plain,
mult(op_c,mult(op_c,a)) != mult(a,mult(op_c,op_c)),
inference(paramod,[status(thm)],[c_22,c_10]) ).
cnf(c_24,plain,
mult(a,mult(op_c,op_c)) != mult(op_c,mult(op_c,a)),
inference(copy,[status(thm)],[c_159]) ).
cnf(c_25,plain,
ld(op_c,mult(A,op_c)) = A,
inference(paramod,[status(thm)],[c_9,c_2]) ).
cnf(c_32,plain,
mult(mult(op_c,mult(op_c,A)),B) = mult(op_c,mult(A,mult(op_c,B))),
inference(paramod,[status(thm)],[c_9,c_8]) ).
cnf(c_160,plain,
ld(op_c,mult(op_c,mult(A,mult(op_c,op_c)))) = mult(op_c,mult(op_c,A)),
inference(paramod,[status(thm)],[c_32,c_25]) ).
cnf(c_161,plain,
mult(A,mult(op_c,op_c)) = mult(op_c,mult(op_c,A)),
inference(paramod,[status(thm)],[c_2,c_160]) ).
cnf(c_156,plain,
mult(op_c,mult(op_c,A)) = mult(A,mult(op_c,op_c)),
inference(copy,[status(thm)],[c_161]) ).
cnf(c_162,plain,
mult(op_c,mult(op_c,a)) != mult(a,mult(op_c,op_c)),
inference(copy,[status(thm)],[c_24]) ).
cnf(c_157,plain,
$false,
inference(resolve,[status(thm)],[c_156,c_162]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : GRP679-1 : TPTP v9.3.1. Released v4.0.0.
% 0.00/0.04 % Command : prover9 -casc 300 -f /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.10/5.98 % Computer : n013.cluster.edu
% 0.10/5.98 % Model : x86_64 x86_64
% 0.10/5.98 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/5.98 % Memory : 8046.5625MB
% 0.10/5.98 % OS : Linux 6.8.0-71-generic
% 0.10/5.98 % CPULimit : 300
% 0.10/5.98 % WCLimit : 300
% 0.10/5.98 % DateTime : Fri Sep 25 15:36:08 UTC 2026
% 0.10/5.98 % CPUTime :
% 0.10/5.98 % Prover9 (64) version 2026-6A, July 2026, CASC-J13.
% 0.10/5.98 % Process 749138 was started by sandbox2 on n013,
% 0.10/5.98 % Fri Sep 25 15:36:08 2026
% 0.10/5.98 % The command was "/export/starexec/sandbox2/solver/bin/prover9 -casc 300 -f /export/starexec/sandbox2/benchmark/theBenchmark.p".
% 0.10/5.99
% 0.10/5.99 % From the command line: assign(max_seconds, 300).
% 0.10/6.02
% 0.10/6.02 % SZS status Unsatisfiable for theBenchmark
% 0.10/6.02
% 0.10/6.02 % Proof 1 at 0.01 (+ 0.01) seconds.
% 0.10/6.02 % Length of proof is 12.
% 0.10/6.02 % Level of proof is 4.
% 0.10/6.02 % Maximum clause weight is 55.000.
% 0.10/6.02 % Given clauses 39.
% 0.10/6.02
% 0.10/6.02 % SZS output start CNFRefutation for theBenchmark
% See solution above
%------------------------------------------------------------------------------