%------------------------------------------------------------------------------
% File : FindProof---0.1
% Problem : SYN079-1 : TPTP v9.3.1. Released v1.0.0.
% Transfm : none
% Format : tptp:raw
% Command : run_findproof /export/starexec/sandbox/benchmark/theBenchmark.p 300
% Computer : n017.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 : Fri Sep 25 03:33:45 PM UTC 2026
% Result : Unsatisfiable 3.30s 0.82s
% Output : Proof 3.30s
% Verified :
% SZS Type : Refutation
% Derivation depth : 8
% Number of leaves : 4
% Syntax : Number of formulae : 22 ( 18 unt; 0 def)
% Number of atoms : 30 ( 7 equ)
% Maximal formula atoms : 3 ( 1 avg)
% Number of connectives : 22 ( 14 ~; 8 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 7 ( 2 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of predicates : 3 ( 1 usr; 1 prp; 0-2 aty)
% Number of functors : 6 ( 6 usr; 4 con; 0-4 aty)
% Number of variables : 15 ( 0 sgn 6 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
cnf(f2,axiom,
( big_f(X,Z)
| ~ big_f(Y,Z)
| ~ big_f(X,Y) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',clause_3) ).
fof(f2_nnf,plain,
! [X,Y,Z] :
( big_f(X,Z)
| ~ big_f(Y,Z)
| ~ big_f(X,Y) ),
inference(nnf_transformation,[status(thm)],[f2]) ).
fof(f2_sk,plain,
! [X,Y,Z] :
( big_f(X,Z)
| ~ big_f(Y,Z)
| ~ big_f(X,Y) ),
inference(skolemisation,[status(esa)],[f2_nnf]) ).
cnf(c2,plain,
( big_f(X0,X2)
| ~ big_f(X1,X2)
| ~ big_f(X0,X1) ),
inference(cnf_transformation,[status(esa)],[f2_sk]) ).
cnf(hi2,axiom,
ifeq(big_f(X0,X1),true,ifeq(big_f(X1,X2),true,big_f(X0,X2),true),true) = true,
inference(equality_encoding,[status(esa)],[c2]) ).
cnf(f0,axiom,
big_f(f(a,b),f(b,c)),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',clause_1) ).
fof(f0_nnf,plain,
big_f(f(a,b),f(b,c)),
inference(nnf_transformation,[status(thm)],[f0]) ).
cnf(c0,plain,
big_f(f(a,b),f(b,c)),
inference(cnf_transformation,[status(esa)],[f0_nnf]) ).
cnf(hi0,axiom,
big_f(f(a,b),f(b,c)) = true,
inference(equality_encoding,[status(esa)],[c0]) ).
cnf(f1,axiom,
big_f(f(b,c),f(a,c)),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',clause_2) ).
fof(f1_nnf,plain,
big_f(f(b,c),f(a,c)),
inference(nnf_transformation,[status(thm)],[f1]) ).
cnf(c1,plain,
big_f(f(b,c),f(a,c)),
inference(cnf_transformation,[status(esa)],[f1_nnf]) ).
cnf(hi1,axiom,
big_f(f(b,c),f(a,c)) = true,
inference(equality_encoding,[status(esa)],[c1]) ).
cnf(t1,plain,
big_f(f(a,b),f(a,c)) = true,
inference(hyper_resolution,[status(thm)],[hi2,hi0,hi1]) ).
cnf(t6,plain,
big_f(f(a,b),f(a,c)) = true,
inference(orient,[status(thm)],[t1]) ).
cnf(f3,negated_conjecture,
~ big_f(f(a,b),f(a,c)),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this) ).
fof(f3_nnf,plain,
~ big_f(f(a,b),f(a,c)),
inference(nnf_transformation,[status(thm)],[f3]) ).
fof(f3_sk,plain,
~ big_f(f(a,b),f(a,c)),
inference(skolemisation,[status(esa)],[f3_nnf]) ).
cnf(c3,plain,
~ big_f(f(a,b),f(a,c)),
inference(cnf_transformation,[status(esa)],[f3_sk]) ).
cnf(goal_0,negated_conjecture,
big_f(f(a,b),f(a,c)) != true,
inference(equality_encoding,[status(esa)],[c3]) ).
cnf(g0_0,plain,
true != true,
inference(rw,[status(thm)],[goal_0,t6]) ).
cnf(contradiction_0,plain,
$false,
inference(trivial_inequality_removal,[status(thm)],[g0_0]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : SYN079-1 : TPTP v9.3.1. Released v1.0.0.
% 0.00/0.03 % Command : run_findproof /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 0.09/0.34 % Computer : n017.cluster.edu
% 0.09/0.34 % Model : x86_64 x86_64
% 0.09/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.34 % Memory : 8046.5625MB
% 0.09/0.34 % OS : Linux 6.8.0-71-generic
% 0.09/0.34 % CPULimit : 300
% 0.09/0.34 % WCLimit : 300
% 0.09/0.34 % DateTime : Fri Sep 25 00:02:46 UTC 2026
% 0.09/0.35 % CPUTime :
% 0.09/0.35 Running run_findproof /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 3.30/0.82 % SZS status Unsatisfiable for /export/starexec/sandbox/benchmark/theBenchmark.p
% 3.30/0.82 % SZS output start Proof for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
%------------------------------------------------------------------------------