%------------------------------------------------------------------------------
% File : Prover9---2026-6A
% Problem : GRP703-10 : TPTP v9.3.1. Released v8.1.0.
% Transfm : none
% Format : tptp:raw
% Command : prover9 -casc 300 -f /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n018.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 07:31:16 AM UTC 2026
% Result : Unsatisfiable 0.16s 5.45s
% Output : CNFRefutation 0.16s
% Verified :
% SZS Type : Refutation
% Derivation depth : 9
% Number of leaves : 6
% Syntax : Number of formulae : 22 ( 22 unt; 0 def)
% Number of atoms : 22 ( 21 equ)
% Maximal formula atoms : 1 ( 1 avg)
% Number of connectives : 6 ( 6 ~; 0 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 3 ( 2 avg)
% Maximal term depth : 5 ( 2 avg)
% Number of predicates : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 7 ( 7 usr; 5 con; 0-2 aty)
% Number of variables : 22 ( 0 sgn 8 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f03,axiom,
! [VAR_0,VAR_1] : mult(rd(VAR_0,VAR_1),VAR_1) = VAR_0,
file('theBenchmark.p',f03) ).
cnf(c_3,plain,
mult(rd(A,B),B) = A,
inference(clausify,[status(thm)],[f03]) ).
fof(f05,axiom,
! [VAR_0] : mult(VAR_0,unit) = VAR_0,
file('theBenchmark.p',f05) ).
cnf(c_5,plain,
mult(A,unit) = A,
inference(clausify,[status(thm)],[f05]) ).
fof(f06,axiom,
! [VAR_0] : mult(unit,VAR_0) = VAR_0,
file('theBenchmark.p',f06) ).
cnf(c_6,plain,
mult(unit,A) = A,
inference(clausify,[status(thm)],[f06]) ).
fof(f08,axiom,
! [VAR_0,VAR_1] : mult(op_c,mult(VAR_0,VAR_1)) = mult(mult(op_c,VAR_0),VAR_1),
file('theBenchmark.p',f08) ).
cnf(c_9,plain,
mult(op_c,mult(A,B)) = mult(mult(op_c,A),B),
inference(clausify,[status(thm)],[f08]) ).
cnf(c_10,plain,
mult(mult(op_c,A),B) = mult(op_c,mult(A,B)),
inference(copy,[status(thm)],[c_9]) ).
fof(f12,axiom,
! [VAR_0,VAR_1] : op_e = mult(mult(rd(op_c,mult(VAR_0,VAR_1)),VAR_1),VAR_0),
file('theBenchmark.p',f12) ).
cnf(c_17,plain,
op_e = mult(mult(rd(op_c,mult(A,B)),B),A),
inference(clausify,[status(thm)],[f12]) ).
cnf(c_18,plain,
mult(mult(rd(op_c,mult(A,B)),B),A) = op_e,
inference(copy,[status(thm)],[c_17]) ).
fof(goal,axiom,
mult(op_e,mult(x2,x3)) != mult(mult(op_e,x2),x3),
file('theBenchmark.p',goal) ).
cnf(c_21,plain,
mult(op_e,mult(x2,x3)) != mult(mult(op_e,x2),x3),
inference(clausify,[status(thm)],[goal]) ).
cnf(c_22,plain,
mult(mult(op_e,x2),x3) != mult(op_e,mult(x2,x3)),
inference(copy,[status(thm)],[c_21]) ).
cnf(c_86,plain,
op_e = mult(rd(op_c,mult(unit,A)),A),
inference(paramod,[status(thm)],[c_18,c_5]) ).
cnf(c_87,plain,
op_e = mult(rd(op_c,A),A),
inference(paramod,[status(thm)],[c_6,c_86]) ).
cnf(c_75,plain,
op_e = op_c,
inference(paramod,[status(thm)],[c_3,c_87]) ).
cnf(c_88,plain,
mult(mult(op_c,x2),x3) != mult(op_e,mult(x2,x3)),
inference(paramod,[status(thm)],[c_75,c_22]) ).
cnf(c_89,plain,
mult(op_c,mult(x2,x3)) != mult(op_e,mult(x2,x3)),
inference(paramod,[status(thm)],[c_10,c_88]) ).
cnf(c_90,plain,
mult(op_c,mult(x2,x3)) != mult(op_c,mult(x2,x3)),
inference(paramod,[status(thm)],[c_75,c_89]) ).
cnf(c_85,plain,
$false,
inference(copy,[status(thm)],[c_90]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : GRP703-10 : TPTP v9.3.1. Released v8.1.0.
% 0.00/0.04 % Command : prover9 -casc 300 -f /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.12/5.38 % Computer : n018.cluster.edu
% 0.12/5.38 % Model : x86_64 x86_64
% 0.12/5.38 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/5.38 % Memory : 8046.5625MB
% 0.12/5.38 % OS : Linux 6.8.0-71-generic
% 0.12/5.38 % CPULimit : 300
% 0.12/5.38 % WCLimit : 300
% 0.12/5.38 % DateTime : Fri Sep 25 15:41:11 UTC 2026
% 0.12/5.39 % CPUTime :
% 0.12/5.39 % Prover9 (64) version 2026-6A, July 2026, CASC-J13.
% 0.12/5.39 % Process 2326491 was started by sandbox on n018,
% 0.12/5.39 % Fri Sep 25 15:41:11 2026
% 0.12/5.39 % The command was "/export/starexec/sandbox/solver/bin/prover9 -casc 300 -f /export/starexec/sandbox/benchmark/theBenchmark.p".
% 0.12/5.39
% 0.12/5.39 % From the command line: assign(max_seconds, 300).
% 0.16/5.45
% 0.16/5.45 % SZS status Unsatisfiable for theBenchmark
% 0.16/5.45
% 0.16/5.45 % Proof 1 at 0.01 (+ 0.01) seconds.
% 0.16/5.45 % Length of proof is 11.
% 0.16/5.45 % Level of proof is 3.
% 0.16/5.45 % Maximum clause weight is 11.000.
% 0.16/5.45 % Given clauses 12.
% 0.16/5.45
% 0.16/5.45 % SZS output start CNFRefutation for theBenchmark
% See solution above
%------------------------------------------------------------------------------