%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : GRP602-1 : TPTP v9.3.1. Released v2.6.0.
% Transfm : none
% Format : tptp:raw
% Command : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% Computer : n007.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 01:34:49 PM UTC 2026
% Result : Unsatisfiable 4.27s 1.30s
% Output : CNFRefutation 4.27s
% Verified :
% SZS Type : Refutation
% Derivation depth : 19
% Number of leaves : 3
% Syntax : Number of formulae : 28 ( 28 unt; 0 def)
% Number of atoms : 28 ( 27 equ)
% Maximal formula atoms : 1 ( 1 avg)
% Number of connectives : 5 ( 5 ~; 0 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 5 ( 3 avg)
% Maximal term depth : 9 ( 3 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 : 62 ( 0 sgn 62 !; 0 ?; 57 :)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [X2,X0,X1] : inverse(double_divide(inverse(double_divide(X0,inverse(double_divide(X1,double_divide(X0,X2))))),X2)) = X1,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',single_axiom) ).
fof(f2,axiom,
! [X0,X1] : multiply(X0,X1) = inverse(double_divide(X1,X0)),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',multiply) ).
fof(f3,negated_conjecture,
multiply(multiply(inverse(b2),b2),a2) != a2,
file('/export/starexec/sandbox2/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 != inverse(double_divide(a2,inverse(double_divide(b2,inverse(b2))))),
inference(definition_unfolding,[],[f4,f2,f2]) ).
tcf(c_52,plain,
! [X0: $i,X1: $i,X2: $i] : inverse(double_divide(inverse(double_divide(X0,inverse(double_divide(X1,double_divide(X0,X2))))),X2)) = X1,
inference(cnf_transformation,[],[f1]) ).
tcf(c_53,negated_conjecture,
inverse(double_divide(a2,inverse(double_divide(b2,inverse(b2))))) != a2,
inference(cnf_transformation,[],[f5]) ).
tcf(c_92,plain,
! [X0: $i,X1: $i,X2: $i,X3: $i] : inverse(double_divide(X0,inverse(double_divide(X1,double_divide(X0,double_divide(X2,X3)))))) = inverse(double_divide(inverse(double_divide(X2,X1)),X3)),
inference(superposition,[status(thm)],[c_52,c_52]) ).
tcf(c_96,plain,
! [X0: $i,X1: $i,X2: $i] : inverse(double_divide(inverse(double_divide(inverse(double_divide(X0,X1)),X2)),double_divide(X0,X2))) = X1,
inference(superposition,[status(thm)],[c_92,c_52]) ).
tcf(c_106,plain,
! [X0: $i,X1: $i,X2: $i] : inverse(double_divide(X0,double_divide(inverse(double_divide(X1,X0)),double_divide(X1,X2)))) = X2,
inference(superposition,[status(thm)],[c_96,c_96]) ).
tcf(c_118,plain,
! [X0: $i,X1: $i,X2: $i,X3: $i] : inverse(double_divide(inverse(double_divide(X0,X1)),double_divide(X2,X1))) = double_divide(inverse(double_divide(X3,X2)),double_divide(X3,X0)),
inference(superposition,[status(thm)],[c_106,c_96]) ).
tcf(c_571,plain,
! [X0: $i,X1: $i,X2: $i] : double_divide(inverse(double_divide(X0,X1)),double_divide(X0,inverse(double_divide(X1,X2)))) = X2,
inference(superposition,[status(thm)],[c_118,c_96]) ).
tcf(c_588,plain,
! [X0: $i,X1: $i,X2: $i,X3: $i] : inverse(inverse(double_divide(inverse(double_divide(X0,X1)),double_divide(inverse(double_divide(X2,double_divide(X3,double_divide(X3,X0)))),X1)))) = X2,
inference(superposition,[status(thm)],[c_118,c_52]) ).
tcf(c_609,plain,
! [X0: $i,X1: $i,X2: $i] : inverse(double_divide(X0,inverse(double_divide(inverse(double_divide(X1,X2)),double_divide(X0,X2))))) = X1,
inference(superposition,[status(thm)],[c_118,c_106]) ).
tcf(c_1309,plain,
! [X0: $i,X1: $i,X2: $i] : inverse(double_divide(X0,inverse(inverse(double_divide(inverse(double_divide(X1,X2)),double_divide(X1,X2)))))) = X0,
inference(superposition,[status(thm)],[c_118,c_609]) ).
tcf(c_1679,plain,
! [X0: $i,X1: $i] : inverse(double_divide(X0,inverse(inverse(double_divide(inverse(X1),X1))))) = X0,
inference(superposition,[status(thm)],[c_571,c_1309]) ).
tcf(c_1697,plain,
! [X0: $i,X1: $i,X2: $i] : inverse(double_divide(X0,inverse(double_divide(inverse(double_divide(X1,X2)),double_divide(X1,X2))))) = X0,
inference(superposition,[status(thm)],[c_118,c_1679]) ).
tcf(c_2082,plain,
! [X0: $i,X1: $i] : inverse(double_divide(X0,inverse(double_divide(inverse(X1),X1)))) = X0,
inference(superposition,[status(thm)],[c_571,c_1697]) ).
tcf(c_2108,plain,
! [X0: $i,X1: $i,X2: $i] : inverse(double_divide(X0,double_divide(inverse(double_divide(X1,X2)),double_divide(X1,X2)))) = X0,
inference(superposition,[status(thm)],[c_118,c_2082]) ).
tcf(c_2552,plain,
! [X0: $i,X1: $i] : inverse(double_divide(X0,double_divide(inverse(X1),X1))) = X0,
inference(superposition,[status(thm)],[c_571,c_2108]) ).
tcf(c_2591,plain,
! [X0: $i,X1: $i,X2: $i] : inverse(inverse(double_divide(inverse(double_divide(X0,X1)),double_divide(X2,X1)))) = inverse(double_divide(inverse(X0),X2)),
inference(superposition,[status(thm)],[c_118,c_2552]) ).
tcf(c_3793,plain,
! [X0: $i,X1: $i,X2: $i] : inverse(double_divide(inverse(X0),inverse(double_divide(X1,double_divide(X2,double_divide(X2,X0)))))) = X1,
inference(demodulation,[status(thm)],[c_588,c_2591]) ).
tcf(c_3850,plain,
! [X0: $i,X1: $i] : inverse(double_divide(X0,double_divide(X0,X1))) = inverse(X1),
inference(superposition,[status(thm)],[c_3793,c_2082]) ).
tcf(c_4293,plain,
! [X0: $i,X1: $i,X2: $i] : inverse(double_divide(inverse(double_divide(X0,X1)),X2)) = inverse(double_divide(X0,inverse(double_divide(X1,X2)))),
inference(superposition,[status(thm)],[c_571,c_3850]) ).
tcf(c_4322,plain,
! [X0: $i,X1: $i] : inverse(double_divide(inverse(double_divide(X0,X1)),inverse(X1))) = X0,
inference(superposition,[status(thm)],[c_3850,c_609]) ).
tcf(c_4834,plain,
! [X0: $i,X1: $i] : inverse(double_divide(X0,inverse(double_divide(X1,inverse(X1))))) = X0,
inference(demodulation,[status(thm)],[c_4322,c_4293]) ).
tcf(c_4835,plain,
a2 != a2,
inference(demodulation,[status(thm)],[c_53,c_4834]) ).
tcf(c_4836,plain,
$false,
inference(equality_resolution_simp,[status(thm)],[c_4835]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : GRP602-1 : TPTP v9.3.1. Released v2.6.0.
% 0.00/0.04 % Command : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.10/0.38 % Computer : n007.cluster.edu
% 0.10/0.38 % Model : x86_64 x86_64
% 0.10/0.38 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.38 % Memory : 8046.5625MB
% 0.10/0.38 % OS : Linux 6.8.0-71-generic
% 0.10/0.38 % CPULimit : 300
% 0.10/0.38 % WCLimit : 300
% 0.10/0.38 % DateTime : Wed Sep 23 15:09:07 UTC 2026
% 0.10/0.38 % CPUTime :
% 0.10/0.38 Running run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.10/0.41 Running UEQ theorem proving
% 0.10/0.42 Running: /export/starexec/sandbox2/solver/bin/iproveropt-multi-core.sh -d -n -l tptp -s ueq_schedule -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.10/0.43
% 0.10/0.43 % ======== iProver multi-core TPTP/SMT =========
% 0.10/0.43
% 0.10/0.43 % Detected problem language: tptp
% 0.10/0.44 % Proving...
% 4.27/1.30 WARNING - Clausifier option not provided in the heuristic config "heur/vip2_118404", setting default options.
% 4.27/1.30 % SZS status Started for theBenchmark.p
% 4.27/1.30 % SZS status Unsatisfiable for theBenchmark.p
% 4.27/1.30
% 4.27/1.30 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 4.27/1.30
% 4.27/1.30 % ------ iProver source info
% 4.27/1.30
% 4.27/1.30 % git: date: 2026-07-19 20:42:38 +0200
% 4.27/1.30 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 4.27/1.30 % git: non_committed_changes: false
% 4.27/1.30
% 4.27/1.30 % ------ Parsing...% successful
% 4.27/1.30
% 4.27/1.30
% 4.27/1.30 % ------ Clausification by vclausify_rel & Parsing by iProver...%
% 4.27/1.30
% 4.27/1.30 % ------ Preprocessing... sup_sim: 0 sf_s rm: 0 0s sf_e pe_s pe_e %
% 4.27/1.30
% 4.27/1.30 % ------ Preprocessing... gs_s sp: 0 0s gs_e snvd_s sp: 0 0s snvd_e %
% 4.27/1.30
% 4.27/1.30 % ------ Preprocessing... sf_s rm: 0 0s sf_e
% 4.27/1.30 % ------ Proving...
% 4.27/1.30 % ------ Problem Properties
% 4.27/1.30
% 4.27/1.30 %
% 4.27/1.30 % clauses 2
% 4.27/1.30 % conjectures 1
% 4.27/1.30 % EPR 0
% 4.27/1.30 % Horn 2
% 4.27/1.30 % unary 2
% 4.27/1.30 % binary 0
% 4.27/1.30 % lits 2
% 4.27/1.30 % lits eq 2
% 4.27/1.30 % fd_pure 0
% 4.27/1.30 % fd_pseudo 0
% 4.27/1.30 % fd_cond 0
% 4.27/1.30 % fd_pseudo_cond 0
% 4.27/1.30 % AC symbols 0
% 4.27/1.30
% 4.27/1.30 % ------ Input Options Time Limit: Unbounded
% 4.27/1.30
% 4.27/1.30
% 4.27/1.30 % ------
% 4.27/1.30 % Current options:
% 4.27/1.30 % ------
% 4.27/1.30
% 4.27/1.30
% 4.27/1.30 %
% 4.27/1.30
% 4.27/1.30 % ------ Proving...
% 4.27/1.30 %
% 4.27/1.30
% 4.27/1.30 % SZS status Unsatisfiable for theBenchmark.p
% 4.27/1.30
% 4.27/1.30 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 4.27/1.30
% 4.27/1.30
%------------------------------------------------------------------------------