%------------------------------------------------------------------------------
% File : Prover9---2026-6A
% Problem : SWW421-1 : TPTP v9.3.1. Released v5.2.0.
% Transfm : none
% Format : tptp:raw
% Command : prover9 -casc 300 -f /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n006.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 09:14:13 AM UTC 2026
% Result : Unsatisfiable 0.08s 0.37s
% Output : CNFRefutation 0.08s
% Verified :
% SZS Type : Refutation
% Derivation depth : 6
% Number of leaves : 5
% Syntax : Number of formulae : 15 ( 12 unt; 0 def)
% Number of atoms : 20 ( 7 equ)
% Maximal formula atoms : 3 ( 1 avg)
% Number of connectives : 15 ( 10 ~; 5 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 7 ( 2 avg)
% Maximal term depth : 4 ( 2 avg)
% Number of predicates : 3 ( 1 usr; 1 prp; 0-2 aty)
% Number of functors : 7 ( 7 usr; 4 con; 0-2 aty)
% Number of variables : 16 ( 0 sgn 7 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(associative_commutative,axiom,
! [VAR_0,VAR_1,VAR_2] : sep(VAR_0,sep(VAR_1,VAR_2)) = sep(VAR_1,sep(VAR_0,VAR_2)),
file('theBenchmark.p',associative_commutative) ).
cnf(c_1,plain,
sep(A,sep(B,C)) = sep(B,sep(A,C)),
inference(clausify,[status(thm)],[associative_commutative]) ).
fof(unfolding_2,axiom,
! [VAR_0,VAR_1,VAR_2,VAR_3] :
( heap(sep(lseg(VAR_0,VAR_2),VAR_3))
| VAR_0 = VAR_1
| ~ heap(sep(next(VAR_0,VAR_1),sep(lseg(VAR_1,VAR_2),VAR_3))) ),
file('theBenchmark.p',unfolding_2) ).
cnf(c_9,plain,
( heap(sep(lseg(A,C),D))
| A = B
| ~ heap(sep(next(A,B),sep(lseg(B,C),D))) ),
inference(clausify,[status(thm)],[unfolding_2]) ).
fof(premise_2,axiom,
x2 != x1,
file('theBenchmark.p',premise_2) ).
cnf(c_15,plain,
x2 != x1,
inference(clausify,[status(thm)],[premise_2]) ).
cnf(c_16,plain,
x1 != x2,
inference(copy,[status(thm)],[c_15]) ).
fof(premise_4,axiom,
heap(sep(lseg(x2,x3),sep(next(x1,x2),emp))),
file('theBenchmark.p',premise_4) ).
cnf(c_19,plain,
heap(sep(lseg(x2,x3),sep(next(x1,x2),emp))),
inference(clausify,[status(thm)],[premise_4]) ).
fof(conclusion_1,axiom,
~ heap(sep(lseg(x1,x3),emp)),
file('theBenchmark.p',conclusion_1) ).
cnf(c_20,plain,
~ heap(sep(lseg(x1,x3),emp)),
inference(clausify,[status(thm)],[conclusion_1]) ).
cnf(c_57,plain,
( heap(sep(lseg(x1,A),B))
| ~ heap(sep(next(x1,x2),sep(lseg(x2,A),B))) ),
inference(resolve,[status(thm)],[c_9,c_16]) ).
cnf(c_58,plain,
~ heap(sep(next(x1,x2),sep(lseg(x2,x3),emp))),
inference(resolve,[status(thm)],[c_57,c_20]) ).
cnf(c_59,plain,
~ heap(sep(lseg(x2,x3),sep(next(x1,x2),emp))),
inference(paramod,[status(thm)],[c_1,c_58]) ).
cnf(c_56,plain,
$false,
inference(resolve,[status(thm)],[c_19,c_59]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : SWW421-1 : TPTP v9.3.1. Released v5.2.0.
% 0.00/0.03 % Command : prover9 -casc 300 -f /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.08/0.34 % Computer : n006.cluster.edu
% 0.08/0.34 % Model : x86_64 x86_64
% 0.08/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.34 % Memory : 8046.5625MB
% 0.08/0.34 % OS : Linux 6.8.0-71-generic
% 0.08/0.34 % CPULimit : 300
% 0.08/0.34 % WCLimit : 300
% 0.08/0.34 % DateTime : Sat Sep 26 15:50:25 UTC 2026
% 0.08/0.35 % CPUTime :
% 0.08/0.35 % Prover9 (64) version 2026-6A, July 2026, CASC-J13.
% 0.08/0.35 % Process 1602560 was started by sandbox2 on n006,
% 0.08/0.35 % Sat Sep 26 15:50:25 2026
% 0.08/0.35 % The command was "/export/starexec/sandbox2/solver/bin/prover9 -casc 300 -f /export/starexec/sandbox2/benchmark/theBenchmark.p".
% 0.08/0.36
% 0.08/0.36 % From the command line: assign(max_seconds, 300).
% 0.08/0.37
% 0.08/0.37 % SZS status Unsatisfiable for theBenchmark
% 0.08/0.37
% 0.08/0.37 % Proof 1 at 0.01 (+ 0.00) seconds.
% 0.08/0.37 % Length of proof is 7.
% 0.08/0.37 % Level of proof is 2.
% 0.08/0.37 % Maximum clause weight is 19.000.
% 0.08/0.37 % Given clauses 16.
% 0.08/0.37
% 0.08/0.37 % SZS output start CNFRefutation for theBenchmark
% See solution above
%------------------------------------------------------------------------------