%------------------------------------------------------------------------------
% File : LisaST---0.9
% Problem : NUM002-1 : TPTP v9.3.1. Released v1.0.0.
% Transfm : none
% Format : tptp:raw
% Command : casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n012.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 08:10:37 AM UTC 2026
% Result : Unsatisfiable 26.87s 9.11s
% Output : CNFRefutation 26.87s
% Verified :
% SZS Type : Refutation
% Derivation depth : 7
% Number of leaves : 6
% Syntax : Number of clauses : 19 ( 11 unt; 0 nHn; 10 RR)
% Number of literals : 31 ( 0 equ; 15 neg)
% Maximal clause size : 3 ( 1 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of predicates : 2 ( 1 usr; 1 prp; 0-2 aty)
% Number of functors : 5 ( 5 usr; 3 con; 0-2 aty)
% Number of variables : 49 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(prove_equation,negated_conjecture,
~ equalish(add(subtract(a,b),c),add(a,subtract(c,b))) ).
cnf(transitivity,axiom,
( equalish(X0,X2)
| ~ equalish(X1,X2)
| ~ equalish(X0,X1) ) ).
cnf(commutativity_of_addition,axiom,
equalish(add(X0,X1),add(X1,X0)) ).
cnf(commutativity1,axiom,
equalish(add(subtract(X0,X1),X2),subtract(add(X0,X2),X1)) ).
cnf(commutativity2,axiom,
equalish(subtract(add(X0,X1),X2),add(subtract(X0,X2),X1)) ).
cnf(subtract_substitution1,axiom,
( equalish(X2,subtract(X1,X3))
| ~ equalish(X2,subtract(X0,X3))
| ~ equalish(X0,X1) ) ).
cnf(c0,plain,
~ equalish(add(subtract(a,b),c),add(a,subtract(c,b))),
inference(clausification,[status(esa)],[prove_equation]) ).
cnf(c2,plain,
( equalish(X2,X1)
| ~ equalish(X2,X0)
| ~ equalish(X0,X1) ),
inference(clausification,[status(esa)],[transitivity]) ).
cnf(c3,plain,
equalish(add(X0,X1),add(X1,X0)),
inference(clausification,[status(esa)],[commutativity_of_addition]) ).
cnf(c7,plain,
equalish(add(subtract(X0,X1),X2),subtract(add(X0,X2),X1)),
inference(clausification,[status(esa)],[commutativity1]) ).
cnf(c8,plain,
equalish(subtract(add(X0,X1),X2),add(subtract(X0,X2),X1)),
inference(clausification,[status(esa)],[commutativity2]) ).
cnf(c11,plain,
( equalish(X0,subtract(X3,X2))
| ~ equalish(X1,X3)
| ~ equalish(X0,subtract(X1,X2)) ),
inference(clausification,[status(esa)],[subtract_substitution1]) ).
cnf(d0,plain,
( equalish(add(subtract(X0,X3),X1),subtract(X2,X3))
| ~ equalish(add(X0,X1),X2) ),
inference(resolution,[status(thm)],[c11,c7]) ).
cnf(d1,plain,
( ~ equalish(X0,add(X2,X1))
| equalish(X0,add(X1,X2)) ),
inference(resolution,[status(thm)],[c3,c2]) ).
cnf(d2,plain,
equalish(subtract(add(X0,X1),X2),add(X1,subtract(X0,X2))),
inference(resolution,[status(thm)],[d1,c8]) ).
cnf(d3,plain,
( ~ equalish(X0,subtract(add(X2,X1),X3))
| equalish(X0,add(X1,subtract(X2,X3))) ),
inference(resolution,[status(thm)],[d2,c2]) ).
cnf(d4,plain,
( ~ equalish(add(X0,X2),add(X4,X3))
| equalish(add(subtract(X0,X1),X2),add(X3,subtract(X4,X1))) ),
inference(resolution,[status(thm)],[d3,d0]) ).
cnf(d5,plain,
~ equalish(add(a,c),add(c,a)),
inference(resolution,[status(thm)],[d4,c0]) ).
cnf(d6,plain,
$false,
inference(resolution,[status(thm)],[c3,d5]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.01 % Problem : NUM002-1 : TPTP v9.3.1. Released v1.0.0.
% 0.00/0.02 % Command : casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.04/5.31 % Computer : n012.cluster.edu
% 0.04/5.31 % Model : x86_64 x86_64
% 0.04/5.31 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.04/5.31 % Memory : 8046.5625MB
% 0.04/5.31 % OS : Linux 6.8.0-71-generic
% 0.04/5.31 % CPULimit : 300
% 0.04/5.31 % WCLimit : 300
% 0.04/5.31 % DateTime : Sat Sep 26 01:51:41 UTC 2026
% 0.04/5.31 % CPUTime :
% 0.04/5.31 Running casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 26.87/9.11 % SZS status Unsatisfiable for theBenchmark.p
% 26.87/9.11 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
%------------------------------------------------------------------------------