%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : FLD020-3 : TPTP v9.3.1. Bugfixed v2.1.0.
% Transfm : none
% Format : tptp:raw
% Command : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% Computer : n016.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 01:15:38 PM UTC 2026
% Result : Unsatisfiable 2.32s 1.27s
% Output : CNFRefutation 2.32s
% Verified :
% SZS Type : Refutation
% Derivation depth : 8
% Number of leaves : 6
% Syntax : Number of formulae : 21 ( 9 unt; 0 def)
% Number of atoms : 39 ( 0 equ)
% Maximal formula atoms : 4 ( 1 avg)
% Number of connectives : 38 ( 20 ~; 18 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 11 ( 4 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of types : 1 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of predicates : 3 ( 2 usr; 1 prp; 0-3 aty)
% Number of functors : 4 ( 4 usr; 3 con; 0-1 aty)
% Number of variables : 26 ( 0 sgn 26 !; 0 ?; 16 :)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [X2,X3,X0,X1,X4,X5] :
( ~ sum(X4,X5,X2)
| ~ sum(X3,X5,X1)
| ~ sum(X0,X3,X4)
| sum(X0,X1,X2) ),
file('/export/starexec/sandbox2/benchmark/Axioms/FLD002-0.ax',associativity_addition_1) ).
fof(f4,axiom,
! [X0] :
( ~ defined(X0)
| sum(additive_inverse(X0),X0,additive_identity) ),
file('/export/starexec/sandbox2/benchmark/Axioms/FLD002-0.ax',existence_of_inverse_addition) ).
fof(f5,axiom,
! [X2,X0,X1] :
( ~ sum(X1,X0,X2)
| sum(X0,X1,X2) ),
file('/export/starexec/sandbox2/benchmark/Axioms/FLD002-0.ax',commutativity_addition) ).
fof(f27,axiom,
defined(a),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',a_is_defined) ).
fof(f29,negated_conjecture,
sum(m,a,a),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',sum_3) ).
fof(f30,negated_conjecture,
~ sum(additive_identity,m,additive_identity),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',not_sum_4) ).
tcf(c_79,plain,
! [X0: $i,X1: $i,X2: $i,X3: $i,X4: $i,X5: $i] :
( sum(X0,X4,X5)
| ~ sum(X2,X3,X5)
| ~ sum(X1,X3,X4)
| ~ sum(X0,X1,X2) ),
inference(cnf_transformation,[],[f1]) ).
tcf(c_82,plain,
! [X0: $i] :
( sum(additive_inverse(X0),X0,additive_identity)
| ~ defined(X0) ),
inference(cnf_transformation,[],[f4]) ).
tcf(c_83,plain,
! [X0: $i,X1: $i,X2: $i] :
( sum(X1,X0,X2)
| ~ sum(X0,X1,X2) ),
inference(cnf_transformation,[],[f5]) ).
tcf(c_105,plain,
defined(a),
inference(cnf_transformation,[],[f27]) ).
tcf(c_107,negated_conjecture,
sum(m,a,a),
inference(cnf_transformation,[],[f29]) ).
tcf(c_108,negated_conjecture,
~ sum(additive_identity,m,additive_identity),
inference(cnf_transformation,[],[f30]) ).
tcf(c_282,negated_conjecture,
sum(m,a,a),
inference(demodulation,[status(thm)],[c_107]) ).
tcf(c_285,plain,
( sum(additive_identity,m,additive_identity)
| ~ sum(m,additive_identity,additive_identity) ),
inference(instantiation,[status(thm)],[c_83]) ).
tcf(c_556,plain,
! [X0: $i] :
( sum(X0,additive_inverse(X0),additive_identity)
| ~ defined(X0) ),
inference(superposition,[status(thm)],[c_82,c_83]) ).
tcf(c_1947,plain,
! [X0: $i,X1: $i,X2: $i] :
( sum(m,X1,X2)
| ~ sum(a,X0,X2)
| ~ sum(a,X0,X1) ),
inference(superposition,[status(thm)],[c_282,c_79]) ).
tcf(c_3076,plain,
! [X0: $i] :
( sum(m,additive_identity,X0)
| ~ defined(a)
| ~ sum(a,additive_inverse(a),X0) ),
inference(superposition,[status(thm)],[c_556,c_1947]) ).
tcf(c_3082,plain,
! [X0: $i] :
( sum(m,additive_identity,X0)
| ~ sum(a,additive_inverse(a),X0) ),
inference(forward_subsumption_resolution,[status(thm)],[c_3076,c_105]) ).
tcf(c_3561,plain,
( sum(m,additive_identity,additive_identity)
| ~ defined(a) ),
inference(superposition,[status(thm)],[c_556,c_3082]) ).
tcf(c_3562,plain,
sum(m,additive_identity,additive_identity),
inference(forward_subsumption_resolution,[status(thm)],[c_3561,c_105]) ).
tcf(c_3566,plain,
$false,
inference(prop_impl_just,[status(thm)],[c_3562,c_285,c_108]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : FLD020-3 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.03 % Command : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.08/0.35 % Computer : n016.cluster.edu
% 0.08/0.35 % Model : x86_64 x86_64
% 0.08/0.35 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.35 % Memory : 8046.5625MB
% 0.08/0.35 % OS : Linux 6.8.0-71-generic
% 0.08/0.35 % CPULimit : 300
% 0.08/0.35 % WCLimit : 300
% 0.08/0.35 % DateTime : Fri Sep 25 10:45:14 UTC 2026
% 0.08/0.36 % CPUTime :
% 0.08/0.36 Running run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.13/0.39 Running first-order theorem proving
% 0.13/0.39 Running: /export/starexec/sandbox2/solver/bin/iproveropt-multi-core.sh -d -n -l tptp -s fof_schedule -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.13/0.40
% 0.13/0.40 % ======== iProver multi-core TPTP/SMT =========
% 0.13/0.40
% 0.13/0.40 % Detected problem language: tptp
% 0.13/0.41 % Proving...
% 2.32/1.27 % SZS status Started for theBenchmark.p
% 2.32/1.27 % SZS status Unsatisfiable for theBenchmark.p
% 2.32/1.27
% 2.32/1.27 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 2.32/1.27
% 2.32/1.27 % ------ iProver source info
% 2.32/1.27
% 2.32/1.27 % git: date: 2026-07-19 20:42:38 +0200
% 2.32/1.27 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 2.32/1.27 % git: non_committed_changes: false
% 2.32/1.27
% 2.32/1.27 % ------ Parsing...% successful
% 2.32/1.27
% 2.32/1.27
% 2.32/1.27 % ------ Clausification by vclausify_rel & Parsing by iProver...%
% 2.32/1.27
% 2.32/1.27 % ------ Preprocessing... sf_s rm: 0 0s sf_e pe_s pe_e %
% 2.32/1.27
% 2.32/1.27 % ------ Preprocessing... gs_s sp: 0 0s gs_e snvd_s sp: 0 0s snvd_e
% 2.32/1.27 % ------ Proving...
% 2.32/1.27 % ------ Problem Properties
% 2.32/1.27
% 2.32/1.27 %
% 2.32/1.27 % clauses 30
% 2.32/1.27 % conjectures 2
% 2.32/1.27 % EPR 22
% 2.32/1.27 % Horn 27
% 2.32/1.27 % unary 7
% 2.32/1.27 % binary 6
% 2.32/1.27 % lits 81
% 2.32/1.27 % lits eq 0
% 2.32/1.27 % fd_pure 0
% 2.32/1.27 % fd_pseudo 0
% 2.32/1.27 % fd_cond 0
% 2.32/1.27 % fd_pseudo_cond 0
% 2.32/1.27 % AC symbols 0
% 2.32/1.27
% 2.32/1.27 % ------ Schedule dynamic 5 is on
% 2.32/1.27
% 2.32/1.27 % ------ no equalities: superposition off
% 2.32/1.27
% 2.32/1.27 % ------ Input Options "--resolution_flag false --inst_lit_sel_side none" Time Limit: 10.
% 2.32/1.27
% 2.32/1.27
% 2.32/1.27 % ------
% 2.32/1.27 % Current options:
% 2.32/1.27 % ------
% 2.32/1.27
% 2.32/1.27
% 2.32/1.27 %
% 2.32/1.27
% 2.32/1.27 % ------ Proving...
% 2.32/1.27 %
% 2.32/1.27
% 2.32/1.27 % SZS status Unsatisfiable for theBenchmark.p
% 2.32/1.27
% 2.32/1.27 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 2.32/1.27
% 2.32/1.27
%------------------------------------------------------------------------------