%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : SET015-2 : TPTP v9.3.1. Bugfixed v2.1.0.
% Transfm : none
% Format : tptp:raw
% Command : run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% Computer : n013.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 02:46:03 PM UTC 2026
% Result : Unsatisfiable 41.49s 17.12s
% Output : CNFRefutation 41.49s
% Verified :
% SZS Type : Refutation
% Derivation depth : 11
% Number of leaves : 13
% Syntax : Number of formulae : 70 ( 15 unt; 0 def)
% Number of atoms : 144 ( 0 equ)
% Maximal formula atoms : 3 ( 2 avg)
% Number of connectives : 140 ( 66 ~; 74 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 7 ( 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 : 6 ( 5 usr; 3 prp; 0-2 aty)
% Number of functors : 6 ( 6 usr; 4 con; 0-2 aty)
% Number of variables : 101 ( 0 sgn 101 !; 0 ?; 76 :)
% Comments :
%------------------------------------------------------------------------------
fof(f2,axiom,
! [X2,X0,X1] :
( member(X0,X2)
| ~ subset(X1,X2)
| ~ member(X0,X1) ),
file('/export/starexec/sandbox/benchmark/Axioms/SET002-0.ax',membership_in_subsets) ).
fof(f3,axiom,
! [X0,X1] :
( member(member_of_1_not_of_2(X0,X1),X0)
| subset(X0,X1) ),
file('/export/starexec/sandbox/benchmark/Axioms/SET002-0.ax',subsets_axiom1) ).
fof(f4,axiom,
! [X0,X1] :
( subset(X0,X1)
| ~ member(member_of_1_not_of_2(X0,X1),X1) ),
file('/export/starexec/sandbox/benchmark/Axioms/SET002-0.ax',subsets_axiom2) ).
fof(f7,axiom,
! [X2,X0,X1] :
( member(X0,union(X1,X2))
| ~ member(X0,X1) ),
file('/export/starexec/sandbox/benchmark/Axioms/SET002-0.ax',member_of_set1_is_member_of_union) ).
fof(f8,axiom,
! [X2,X0,X1] :
( member(X0,union(X2,X1))
| ~ member(X0,X1) ),
file('/export/starexec/sandbox/benchmark/Axioms/SET002-0.ax',member_of_set2_is_member_of_union) ).
fof(f9,axiom,
! [X2,X0,X1] :
( member(X0,X2)
| member(X0,X1)
| ~ member(X0,union(X1,X2)) ),
file('/export/starexec/sandbox/benchmark/Axioms/SET002-0.ax',member_of_union_is_member_of_one_set) ).
fof(f13,axiom,
! [X0,X1] :
( subset(X0,X1)
| ~ equal_sets(X0,X1) ),
file('/export/starexec/sandbox/benchmark/Axioms/SET002-0.ax',set_equal_sets_are_subsets1) ).
fof(f14,axiom,
! [X0,X1] :
( subset(X1,X0)
| ~ equal_sets(X0,X1) ),
file('/export/starexec/sandbox/benchmark/Axioms/SET002-0.ax',set_equal_sets_are_subsets2) ).
fof(f15,axiom,
! [X0,X1] :
( equal_sets(X1,X0)
| ~ subset(X1,X0)
| ~ subset(X0,X1) ),
file('/export/starexec/sandbox/benchmark/Axioms/SET002-0.ax',subsets_are_set_equal_sets) ).
fof(f18,axiom,
! [X2,X0,X1] :
( equal_sets(X0,X2)
| ~ equal_sets(X1,X2)
| ~ equal_sets(X0,X1) ),
file('/export/starexec/sandbox/benchmark/Axioms/SET002-0.ax',transitivity_for_set_equal) ).
fof(f22,axiom,
equal_sets(union(as,bs),cs),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',a_union_b_is_c) ).
fof(f23,axiom,
equal_sets(union(bs,as),ds),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',b_union_a_is_d) ).
fof(f24,negated_conjecture,
~ equal_sets(cs,ds),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_c_equals_d) ).
tcf(c_74,plain,
! [X0: $i,X1: $i,X2: $i] :
( member(X0,X2)
| ~ subset(X1,X2)
| ~ member(X0,X1) ),
inference(cnf_transformation,[],[f2]) ).
tcf(c_75,plain,
! [X0: $i,X1: $i] :
( subset(X0,X1)
| member(member_of_1_not_of_2(X0,X1),X0) ),
inference(cnf_transformation,[],[f3]) ).
tcf(c_76,plain,
! [X0: $i,X1: $i] :
( subset(X0,X1)
| ~ member(member_of_1_not_of_2(X0,X1),X1) ),
inference(cnf_transformation,[],[f4]) ).
tcf(c_79,plain,
! [X0: $i,X1: $i,X2: $i] :
( member(X0,union(X1,X2))
| ~ member(X0,X1) ),
inference(cnf_transformation,[],[f7]) ).
tcf(c_80,plain,
! [X0: $i,X1: $i,X2: $i] :
( member(X0,union(X2,X1))
| ~ member(X0,X1) ),
inference(cnf_transformation,[],[f8]) ).
tcf(c_81,plain,
! [X0: $i,X1: $i,X2: $i] :
( member(X0,X2)
| member(X0,X1)
| ~ member(X0,union(X1,X2)) ),
inference(cnf_transformation,[],[f9]) ).
tcf(c_85,plain,
! [X0: $i,X1: $i] :
( subset(X0,X1)
| ~ equal_sets(X0,X1) ),
inference(cnf_transformation,[],[f13]) ).
tcf(c_86,plain,
! [X0: $i,X1: $i] :
( subset(X1,X0)
| ~ equal_sets(X0,X1) ),
inference(cnf_transformation,[],[f14]) ).
tcf(c_87,plain,
! [X0: $i,X1: $i] :
( equal_sets(X1,X0)
| ~ subset(X1,X0)
| ~ subset(X0,X1) ),
inference(cnf_transformation,[],[f15]) ).
tcf(c_90,plain,
! [X0: $i,X1: $i,X2: $i] :
( equal_sets(X0,X2)
| ~ equal_sets(X1,X2)
| ~ equal_sets(X0,X1) ),
inference(cnf_transformation,[],[f18]) ).
tcf(c_94,plain,
equal_sets(union(as,bs),cs),
inference(cnf_transformation,[],[f22]) ).
tcf(c_95,plain,
equal_sets(union(bs,as),ds),
inference(cnf_transformation,[],[f23]) ).
tcf(c_96,negated_conjecture,
~ equal_sets(cs,ds),
inference(cnf_transformation,[],[f24]) ).
tcf(c_436,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1,X1_iProver_equal_sets_1: iProver_equal_sets_1,X2_iProver_equal_sets_1: iProver_equal_sets_1] :
( equal_sets(X0_iProver_equal_sets_1,X2_iProver_equal_sets_1)
| ~ equal_sets(X1_iProver_equal_sets_1,X2_iProver_equal_sets_1)
| ~ equal_sets(X0_iProver_equal_sets_1,X1_iProver_equal_sets_1) ),
inference(subtyping,[status(esa)],[c_90]) ).
tcf(c_439,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1,X1_iProver_equal_sets_1: iProver_equal_sets_1] :
( equal_sets(X1_iProver_equal_sets_1,X0_iProver_equal_sets_1)
| ~ subset(X1_iProver_equal_sets_1,X0_iProver_equal_sets_1)
| ~ subset(X0_iProver_equal_sets_1,X1_iProver_equal_sets_1) ),
inference(subtyping,[status(esa)],[c_87]) ).
tcf(c_440,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1,X1_iProver_equal_sets_1: iProver_equal_sets_1] :
( subset(X1_iProver_equal_sets_1,X0_iProver_equal_sets_1)
| ~ equal_sets(X0_iProver_equal_sets_1,X1_iProver_equal_sets_1) ),
inference(subtyping,[status(esa)],[c_86]) ).
tcf(c_441,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1,X1_iProver_equal_sets_1: iProver_equal_sets_1] :
( subset(X0_iProver_equal_sets_1,X1_iProver_equal_sets_1)
| ~ equal_sets(X0_iProver_equal_sets_1,X1_iProver_equal_sets_1) ),
inference(subtyping,[status(esa)],[c_85]) ).
tcf(c_445,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1,X0_iProver_member_1: iProver_member_1,X1_iProver_equal_sets_1: iProver_equal_sets_1] :
( member(X0_iProver_member_1,X1_iProver_equal_sets_1)
| member(X0_iProver_member_1,X0_iProver_equal_sets_1)
| ~ member(X0_iProver_member_1,union(X0_iProver_equal_sets_1,X1_iProver_equal_sets_1)) ),
inference(subtyping,[status(esa)],[c_81]) ).
tcf(c_446,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1,X0_iProver_member_1: iProver_member_1,X1_iProver_equal_sets_1: iProver_equal_sets_1] :
( member(X0_iProver_member_1,union(X1_iProver_equal_sets_1,X0_iProver_equal_sets_1))
| ~ member(X0_iProver_member_1,X0_iProver_equal_sets_1) ),
inference(subtyping,[status(esa)],[c_80]) ).
tcf(c_447,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1,X0_iProver_member_1: iProver_member_1,X1_iProver_equal_sets_1: iProver_equal_sets_1] :
( member(X0_iProver_member_1,union(X0_iProver_equal_sets_1,X1_iProver_equal_sets_1))
| ~ member(X0_iProver_member_1,X0_iProver_equal_sets_1) ),
inference(subtyping,[status(esa)],[c_79]) ).
tcf(c_450,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1,X1_iProver_equal_sets_1: iProver_equal_sets_1] :
( subset(X0_iProver_equal_sets_1,X1_iProver_equal_sets_1)
| ~ member(member_of_1_not_of_2(X0_iProver_equal_sets_1,X1_iProver_equal_sets_1),X1_iProver_equal_sets_1) ),
inference(subtyping,[status(esa)],[c_76]) ).
tcf(c_451,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1,X1_iProver_equal_sets_1: iProver_equal_sets_1] :
( subset(X0_iProver_equal_sets_1,X1_iProver_equal_sets_1)
| member(member_of_1_not_of_2(X0_iProver_equal_sets_1,X1_iProver_equal_sets_1),X0_iProver_equal_sets_1) ),
inference(subtyping,[status(esa)],[c_75]) ).
tcf(c_452,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1,X0_iProver_member_1: iProver_member_1,X1_iProver_equal_sets_1: iProver_equal_sets_1] :
( member(X0_iProver_member_1,X1_iProver_equal_sets_1)
| ~ subset(X0_iProver_equal_sets_1,X1_iProver_equal_sets_1)
| ~ member(X0_iProver_member_1,X0_iProver_equal_sets_1) ),
inference(subtyping,[status(esa)],[c_74]) ).
tcf(c_455,plain,
equal_sets(union(bs,as),ds),
inference(subtyping,[status(esa)],[c_95]) ).
tcf(c_456,plain,
equal_sets(union(as,bs),cs),
inference(subtyping,[status(esa)],[c_94]) ).
tcf(c_469,plain,
subset(union(bs,as),ds),
inference(superposition,[status(thm)],[c_455,c_441]) ).
tcf(c_470,plain,
subset(ds,union(bs,as)),
inference(superposition,[status(thm)],[c_455,c_440]) ).
tcf(c_472,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1] :
( equal_sets(union(bs,as),X0_iProver_equal_sets_1)
| ~ equal_sets(ds,X0_iProver_equal_sets_1) ),
inference(superposition,[status(thm)],[c_455,c_436]) ).
tcf(c_474,plain,
subset(union(as,bs),cs),
inference(superposition,[status(thm)],[c_456,c_441]) ).
tcf(c_475,plain,
subset(cs,union(as,bs)),
inference(superposition,[status(thm)],[c_456,c_440]) ).
tcf(c_477,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1] :
( equal_sets(union(as,bs),X0_iProver_equal_sets_1)
| ~ equal_sets(cs,X0_iProver_equal_sets_1) ),
inference(superposition,[status(thm)],[c_456,c_436]) ).
tcf(c_491,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1] :
( subset(X0_iProver_equal_sets_1,union(bs,as))
| ~ equal_sets(ds,X0_iProver_equal_sets_1) ),
inference(superposition,[status(thm)],[c_472,c_440]) ).
tcf(c_518,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1] :
( subset(X0_iProver_equal_sets_1,union(as,bs))
| ~ equal_sets(cs,X0_iProver_equal_sets_1) ),
inference(superposition,[status(thm)],[c_477,c_440]) ).
tcf(c_940,plain,
! [X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,ds)
| ~ member(X0_iProver_member_1,union(bs,as)) ),
inference(superposition,[status(thm)],[c_469,c_452]) ).
tcf(c_941,plain,
! [X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,union(bs,as))
| ~ member(X0_iProver_member_1,ds) ),
inference(superposition,[status(thm)],[c_470,c_452]) ).
tcf(c_942,plain,
! [X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,cs)
| ~ member(X0_iProver_member_1,union(as,bs)) ),
inference(superposition,[status(thm)],[c_474,c_452]) ).
tcf(c_943,plain,
! [X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,union(as,bs))
| ~ member(X0_iProver_member_1,cs) ),
inference(superposition,[status(thm)],[c_475,c_452]) ).
tcf(c_945,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1,X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,union(bs,as))
| ~ equal_sets(ds,X0_iProver_equal_sets_1)
| ~ member(X0_iProver_member_1,X0_iProver_equal_sets_1) ),
inference(superposition,[status(thm)],[c_491,c_452]) ).
tcf(c_947,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1,X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,union(as,bs))
| ~ equal_sets(cs,X0_iProver_equal_sets_1)
| ~ member(X0_iProver_member_1,X0_iProver_equal_sets_1) ),
inference(superposition,[status(thm)],[c_518,c_452]) ).
tcf(c_976,plain,
! [X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,ds)
| ~ member(X0_iProver_member_1,as) ),
inference(superposition,[status(thm)],[c_446,c_940]) ).
tcf(c_977,plain,
! [X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,ds)
| ~ member(X0_iProver_member_1,bs) ),
inference(superposition,[status(thm)],[c_447,c_940]) ).
tcf(c_988,plain,
! [X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,bs)
| member(X0_iProver_member_1,as)
| ~ member(X0_iProver_member_1,ds) ),
inference(superposition,[status(thm)],[c_941,c_445]) ).
tcf(c_998,plain,
! [X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,cs)
| ~ member(X0_iProver_member_1,bs) ),
inference(superposition,[status(thm)],[c_446,c_942]) ).
tcf(c_999,plain,
! [X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,cs)
| ~ member(X0_iProver_member_1,as) ),
inference(superposition,[status(thm)],[c_447,c_942]) ).
tcf(c_1010,plain,
! [X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,bs)
| member(X0_iProver_member_1,as)
| ~ member(X0_iProver_member_1,cs) ),
inference(superposition,[status(thm)],[c_943,c_445]) ).
tcf(c_1044,plain,
! [X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,union(bs,as))
| ~ member(X0_iProver_member_1,cs)
| ~ equal_sets(ds,union(as,bs)) ),
inference(superposition,[status(thm)],[c_943,c_945]) ).
tcf(c_1053,plain,
! [X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,union(bs,as))
| ~ member(X0_iProver_member_1,cs) ),
inference(global_subsumption_just,[status(thm)],[c_1044,c_941,c_977,c_976,c_1010]) ).
tcf(c_1095,plain,
! [X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,union(as,bs))
| ~ member(X0_iProver_member_1,ds)
| ~ equal_sets(cs,union(bs,as)) ),
inference(superposition,[status(thm)],[c_941,c_947]) ).
tcf(c_1107,plain,
! [X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,union(as,bs))
| ~ member(X0_iProver_member_1,ds) ),
inference(global_subsumption_just,[status(thm)],[c_1095,c_943,c_988,c_999,c_998]) ).
tcf(c_1338,plain,
! [X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,ds)
| ~ member(X0_iProver_member_1,cs) ),
inference(superposition,[status(thm)],[c_1053,c_940]) ).
tcf(c_1516,plain,
! [X0_iProver_member_1: iProver_member_1] :
( member(X0_iProver_member_1,cs)
| ~ member(X0_iProver_member_1,ds) ),
inference(superposition,[status(thm)],[c_1107,c_942]) ).
tcf(c_2094,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1] :
( subset(cs,X0_iProver_equal_sets_1)
| member(member_of_1_not_of_2(cs,X0_iProver_equal_sets_1),ds) ),
inference(superposition,[status(thm)],[c_451,c_1338]) ).
tcf(c_2632,plain,
! [X0_iProver_equal_sets_1: iProver_equal_sets_1] :
( subset(ds,X0_iProver_equal_sets_1)
| member(member_of_1_not_of_2(ds,X0_iProver_equal_sets_1),cs) ),
inference(superposition,[status(thm)],[c_451,c_1516]) ).
tcf(c_3041,plain,
( equal_sets(cs,ds)
| ~ subset(ds,cs)
| ~ subset(cs,ds) ),
inference(instantiation,[status(thm)],[c_439]) ).
tcf(c_4013,plain,
subset(cs,ds),
inference(superposition,[status(thm)],[c_2094,c_450]) ).
tcf(c_4877,plain,
subset(ds,cs),
inference(superposition,[status(thm)],[c_2632,c_450]) ).
tcf(c_4884,plain,
$false,
inference(prop_impl_just,[status(thm)],[c_4877,c_4013,c_3041,c_96]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET015-2 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.04 % Command : run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.12/10.57 % Computer : n013.cluster.edu
% 0.12/10.57 % Model : x86_64 x86_64
% 0.12/10.57 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/10.57 % Memory : 8046.5625MB
% 0.12/10.57 % OS : Linux 6.8.0-71-generic
% 0.12/10.57 % CPULimit : 300
% 0.12/10.57 % WCLimit : 300
% 0.12/10.57 % DateTime : Thu Sep 24 09:08:54 UTC 2026
% 0.12/10.58 % CPUTime :
% 0.12/10.58 Running run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.16/10.61 Running first-order theorem proving
% 0.16/10.61 Running: /export/starexec/sandbox/solver/bin/iproveropt-multi-core.sh -d -n -l tptp -s fof_schedule -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.16/10.62
% 0.16/10.62 % ======== iProver multi-core TPTP/SMT =========
% 0.16/10.62
% 0.16/10.62 % Detected problem language: tptp
% 0.16/10.63 % Proving...
% 41.49/17.12 % SZS status Started for theBenchmark.p
% 41.49/17.12 % SZS status Unsatisfiable for theBenchmark.p
% 41.49/17.12
% 41.49/17.12 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 41.49/17.12
% 41.49/17.12 % ------ iProver source info
% 41.49/17.12
% 41.49/17.12 % git: date: 2026-07-19 20:42:38 +0200
% 41.49/17.12 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 41.49/17.12 % git: non_committed_changes: false
% 41.49/17.12
% 41.49/17.12 % ------ Parsing...% successful
% 41.49/17.12
% 41.49/17.12
% 41.49/17.12 % ------ Clausification by vclausify_rel & Parsing by iProver...%
% 41.49/17.12
% 41.49/17.12 % ------ Preprocessing... sf_s rm: 3 0s sf_e pe_s pe_e sf_s rm: 0 0s sf_e pe_s pe_e %
% 41.49/17.12
% 41.49/17.12 % ------ Preprocessing... gs_s sp: 0 0s gs_e snvd_s sp: 0 0s snvd_e
% 41.49/17.12 % ------ Proving...
% 41.49/17.12 % ------ Problem Properties
% 41.49/17.12
% 41.49/17.12 %
% 41.49/17.12 % clauses 21
% 41.49/17.12 % conjectures 1
% 41.49/17.12 % EPR 9
% 41.49/17.12 % Horn 18
% 41.49/17.12 % unary 5
% 41.49/17.12 % binary 11
% 41.49/17.12 % lits 42
% 41.49/17.12 % lits eq 0
% 41.49/17.12 % fd_pure 0
% 41.49/17.12 % fd_pseudo 0
% 41.49/17.12 % fd_cond 0
% 41.49/17.12 % fd_pseudo_cond 0
% 41.49/17.12 % AC symbols 0
% 41.49/17.12
% 41.49/17.12 % ------ Input Options Time Limit: Unbounded
% 41.49/17.12
% 41.49/17.12
% 41.49/17.12 % ------
% 41.49/17.12 % Current options:
% 41.49/17.12 % ------
% 41.49/17.12
% 41.49/17.12
% 41.49/17.12 %
% 41.49/17.12
% 41.49/17.12 % ------ Proving...
% 41.49/17.12 %
% 41.49/17.12
% 41.49/17.12 % SZS status Unsatisfiable for theBenchmark.p
% 41.49/17.12
% 41.49/17.12 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 41.49/17.12
% 41.49/17.12
%------------------------------------------------------------------------------