%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : GRP467-1 : TPTP v9.3.1. Released v2.6.0.
% Transfm : none
% Format : tptp:raw
% Command : run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% Computer : n011.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 01:34:19 PM UTC 2026
% Result : Unsatisfiable 1.98s 26.07s
% Output : CNFRefutation 1.98s
% Verified :
% SZS Type : Refutation
% Derivation depth : 9
% Number of leaves : 3
% Syntax : Number of formulae : 16 ( 16 unt; 0 def)
% Number of atoms : 16 ( 15 equ)
% Maximal formula atoms : 1 ( 1 avg)
% Number of connectives : 6 ( 6 ~; 0 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 6 ( 3 avg)
% Maximal term depth : 6 ( 2 avg)
% Number of types : 1 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of predicates : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 5 ( 5 usr; 2 con; 0-2 aty)
% Number of variables : 31 ( 0 sgn 31 !; 0 ?; 25 :)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [X2,X3,X0,X1] : divide(divide(X0,X0),divide(X1,divide(divide(X2,divide(X3,X1)),inverse(X3)))) = X2,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',single_axiom) ).
fof(f2,axiom,
! [X0,X1] : multiply(X0,X1) = divide(X0,inverse(X1)),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',multiply) ).
fof(f3,negated_conjecture,
multiply(multiply(inverse(b2),b2),a2) != a2,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_these_axioms_2) ).
fof(f4,plain,
a2 != multiply(multiply(inverse(b2),b2),a2),
inference(reorient_equations,[],[f3]) ).
fof(f5,plain,
a2 != divide(divide(inverse(b2),inverse(b2)),inverse(a2)),
inference(definition_unfolding,[],[f4,f2,f2]) ).
tcf(c_52,plain,
! [X0: $i,X1: $i,X2: $i,X3: $i] : divide(divide(X0,X0),divide(X1,divide(divide(X2,divide(X3,X1)),inverse(X3)))) = X2,
inference(cnf_transformation,[],[f1]) ).
tcf(c_53,negated_conjecture,
divide(divide(inverse(b2),inverse(b2)),inverse(a2)) != a2,
inference(cnf_transformation,[],[f5]) ).
tcf(c_95,plain,
! [X0: $i,X1: $i,X2: $i,X3: $i,X4: $i] : divide(divide(X0,X0),divide(divide(divide(X1,divide(X2,X3)),inverse(X2)),divide(X1,inverse(X3)))) = divide(X4,X4),
inference(superposition,[status(thm)],[c_52,c_52]) ).
tcf(c_112,plain,
! [X0: $i,X1: $i] : divide(X0,X0) = divide(X1,X1),
inference(superposition,[status(thm)],[c_95,c_95]) ).
tcf(c_168,plain,
! [X0: $i,X1: $i,X2: $i,X3: $i] : divide(divide(X0,X0),divide(X1,divide(divide(X2,X2),inverse(X3)))) = divide(X3,X1),
inference(superposition,[status(thm)],[c_112,c_52]) ).
tcf(c_170,plain,
! [X0: $i] : divide(divide(X0,X0),inverse(a2)) != a2,
inference(superposition,[status(thm)],[c_112,c_53]) ).
tcf(c_562,plain,
! [X0: $i,X1: $i,X2: $i] : divide(X0,divide(divide(X1,X1),inverse(X0))) = divide(X2,X2),
inference(superposition,[status(thm)],[c_168,c_112]) ).
tcf(c_1711,plain,
! [X0: $i,X1: $i,X2: $i,X3: $i] : divide(divide(X0,X0),divide(inverse(X1),divide(divide(X2,X2),inverse(divide(X3,X3))))) = X1,
inference(superposition,[status(thm)],[c_562,c_52]) ).
tcf(c_4360,plain,
! [X0: $i,X1: $i] : divide(divide(X0,X0),inverse(X1)) = X1,
inference(demodulation,[status(thm)],[c_1711,c_168]) ).
tcf(c_4361,plain,
a2 != a2,
inference(demodulation,[status(thm)],[c_170,c_4360]) ).
tcf(c_4368,plain,
$false,
inference(equality_resolution_simp,[status(thm)],[c_4361]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.01 % Problem : GRP467-1 : TPTP v9.3.1. Released v2.6.0.
% 0.00/0.02 % Command : run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.08/0.34 % Computer : n011.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
% 0.03/25.30 % CPULimit : 300
% 0.03/25.30 % WCLimit : 300
% 0.03/25.30 % DateTime : Wed Sep 23 14:50:20 UTC 2026
% 0.03/25.31 % CPUTime :
% 0.03/25.31 Running run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.03/25.33 Running UEQ theorem proving
% 0.03/25.33 Running: /export/starexec/sandbox/solver/bin/iproveropt-multi-core.sh -d -n -l tptp -s ueq_schedule -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.03/25.34
% 0.03/25.34 % ======== iProver multi-core TPTP/SMT =========
% 0.03/25.34
% 0.03/25.34 % Detected problem language: tptp
% 0.03/25.34 % Proving...
% 1.98/26.07 WARNING - Clausifier option not provided in the heuristic config "heur/vip2_118404", setting default options.
% 1.98/26.07 % SZS status Started for theBenchmark.p
% 1.98/26.07 % SZS status Unsatisfiable for theBenchmark.p
% 1.98/26.07
% 1.98/26.07 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 1.98/26.07
% 1.98/26.07 % ------ iProver source info
% 1.98/26.07
% 1.98/26.07 % git: date: 2026-07-19 20:42:38 +0200
% 1.98/26.07 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 1.98/26.07 % git: non_committed_changes: false
% 1.98/26.07
% 1.98/26.07 % ------ Parsing...% successful
% 1.98/26.07
% 1.98/26.07
% 1.98/26.07 % ------ Clausification by vclausify_rel & Parsing by iProver...%
% 1.98/26.07
% 1.98/26.07 % ------ Preprocessing... sup_sim: 0 sf_s rm: 0 0s sf_e pe_s pe_e %
% 1.98/26.07
% 1.98/26.07 % ------ Preprocessing... gs_s sp: 0 0s gs_e snvd_s sp: 0 0s snvd_e %
% 1.98/26.07
% 1.98/26.07 % ------ Preprocessing... sf_s rm: 0 0s sf_e
% 1.98/26.07 % ------ Proving...
% 1.98/26.07 % ------ Problem Properties
% 1.98/26.07
% 1.98/26.07 %
% 1.98/26.07 % clauses 2
% 1.98/26.07 % conjectures 1
% 1.98/26.07 % EPR 0
% 1.98/26.07 % Horn 2
% 1.98/26.07 % unary 2
% 1.98/26.07 % binary 0
% 1.98/26.07 % lits 2
% 1.98/26.07 % lits eq 2
% 1.98/26.07 % fd_pure 0
% 1.98/26.07 % fd_pseudo 0
% 1.98/26.07 % fd_cond 0
% 1.98/26.07 % fd_pseudo_cond 0
% 1.98/26.07 % AC symbols 0
% 1.98/26.07
% 1.98/26.07 % ------ Input Options Time Limit: Unbounded
% 1.98/26.07
% 1.98/26.07
% 1.98/26.07 % ------
% 1.98/26.07 % Current options:
% 1.98/26.07 % ------
% 1.98/26.07
% 1.98/26.07
% 1.98/26.07 %
% 1.98/26.07
% 1.98/26.07 % ------ Proving...
% 1.98/26.07 %
% 1.98/26.07
% 1.98/26.07 % SZS status Unsatisfiable for theBenchmark.p
% 1.98/26.07
% 1.98/26.07 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 1.98/26.07
% 1.98/26.07
%------------------------------------------------------------------------------