%------------------------------------------------------------------------------
% File : CSE_E---1.7
% Problem : LCL899+1 : TPTP v9.2.1. Released v5.5.0.
% Transfm : none
% Format : tptp:raw
% Command : /export/starexec/sandbox/solver/bin/lemma_parallel_prover %s --lemma-prover /export/starexec/sandbox/solver/bin/cse --final-prover /export/starexec/sandbox/solver/bin/eprover --proof-time %d --global-time-limit %d
% Computer : n028.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8042.1875MB
% OS : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit : 300s
% DateTime : Tue May 5 04:45:19 PM UTC 2026
% Result : Theorem 1.27s 1.72s
% Output : CNFRefutation 1.27s
% Verified :
% SZS Type : Refutation
% Derivation depth : 11
% Number of leaves : 9
% Syntax : Number of formulae : 49 ( 38 unt; 0 def)
% Number of atoms : 65 ( 27 equ)
% Maximal formula atoms : 4 ( 1 avg)
% Number of connectives : 33 ( 17 ~; 12 |; 2 &)
% ( 1 <=>; 1 =>; 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 : 5 ( 5 usr; 3 con; 0-2 aty)
% Number of variables : 70 ( 12 sgn 28 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(sos_07,axiom,
! [X9,X10,X11] :
( '>='('+'(X9,X10),X11)
<=> '>='(X10,'==>'(X9,X11)) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',sos_07) ).
fof(sos_03,axiom,
! [X1] : '+'(X1,'0') = X1,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',sos_03) ).
fof(sos_04,axiom,
! [X1] : '>='(X1,X1),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',sos_04) ).
fof(sos_06,axiom,
! [X7,X8] :
( ( '>='(X7,X8)
& '>='(X8,X7) )
=> X7 = X8 ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',sos_06) ).
fof(sos_08,axiom,
! [X1] : '>='(X1,'0'),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',sos_08) ).
fof(sos_02,axiom,
! [X1,X2] : '+'(X1,X2) = '+'(X2,X1),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',sos_02) ).
fof(sos_12,axiom,
! [X1] : '+'(X1,'1') = '1',
file('/export/starexec/sandbox/benchmark/theBenchmark.p',sos_12) ).
fof(goals_14,conjecture,
! [X21] : '==>'('==>'(X21,'1'),'1') = X21,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',goals_14) ).
fof(sos_13,axiom,
! [X1,X2] : '==>'('==>'(X1,X2),X2) = '==>'('==>'(X2,X1),X1),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',sos_13) ).
fof(c_0_9,plain,
! [X63,X64,X65] :
( ( ~ '>='('+'(X63,X64),X65)
| '>='(X64,'==>'(X63,X65)) )
& ( ~ '>='(X64,'==>'(X63,X65))
| '>='('+'(X63,X64),X65) ) ),
inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[sos_07])]) ).
fof(c_0_10,plain,
! [X56] : '+'(X56,'0') = X56,
inference(variable_rename,[status(thm)],[sos_03]) ).
cnf(c_0_11,plain,
( '>='(X2,'==>'(X1,X3))
| ~ '>='('+'(X1,X2),X3) ),
inference(split_conjunct,[status(thm)],[c_0_9]) ).
cnf(c_0_12,plain,
'+'(X1,'0') = X1,
inference(split_conjunct,[status(thm)],[c_0_10]) ).
fof(c_0_13,plain,
! [X57] : '>='(X57,X57),
inference(variable_rename,[status(thm)],[sos_04]) ).
fof(c_0_14,plain,
! [X61,X62] :
( ~ '>='(X61,X62)
| ~ '>='(X62,X61)
| X61 = X62 ),
inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[sos_06])]) ).
cnf(c_0_15,plain,
( '>='('0','==>'(X1,X2))
| ~ '>='(X1,X2) ),
inference(spm,[status(thm)],[c_0_11,c_0_12]) ).
cnf(c_0_16,plain,
'>='(X1,X1),
inference(split_conjunct,[status(thm)],[c_0_13]) ).
fof(c_0_17,plain,
! [X66] : '>='(X66,'0'),
inference(variable_rename,[status(thm)],[sos_08]) ).
fof(c_0_18,plain,
! [X54,X55] : '+'(X54,X55) = '+'(X55,X54),
inference(variable_rename,[status(thm)],[sos_02]) ).
cnf(c_0_19,plain,
( X1 = X2
| ~ '>='(X1,X2)
| ~ '>='(X2,X1) ),
inference(split_conjunct,[status(thm)],[c_0_14]) ).
cnf(c_0_20,plain,
'>='('0','==>'(X1,X1)),
inference(spm,[status(thm)],[c_0_15,c_0_16]) ).
cnf(c_0_21,plain,
'>='(X1,'0'),
inference(split_conjunct,[status(thm)],[c_0_17]) ).
cnf(c_0_22,plain,
'+'(X1,X2) = '+'(X2,X1),
inference(split_conjunct,[status(thm)],[c_0_18]) ).
fof(c_0_23,plain,
! [X76] : '+'(X76,'1') = '1',
inference(variable_rename,[status(thm)],[sos_12]) ).
cnf(c_0_24,plain,
( '>='('+'(X2,X1),X3)
| ~ '>='(X1,'==>'(X2,X3)) ),
inference(split_conjunct,[status(thm)],[c_0_9]) ).
cnf(c_0_25,plain,
'==>'(X1,X1) = '0',
inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_19,c_0_20]),c_0_21])]) ).
fof(c_0_26,negated_conjecture,
~ ! [X21] : '==>'('==>'(X21,'1'),'1') = X21,
inference(assume_negation,[status(cth)],[goals_14]) ).
cnf(c_0_27,plain,
( '>='(X1,'==>'(X2,X3))
| ~ '>='('+'(X1,X2),X3) ),
inference(spm,[status(thm)],[c_0_11,c_0_22]) ).
cnf(c_0_28,plain,
'+'(X1,'1') = '1',
inference(split_conjunct,[status(thm)],[c_0_23]) ).
cnf(c_0_29,plain,
'>='('+'(X1,X2),X1),
inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_24,c_0_25]),c_0_21])]) ).
fof(c_0_30,plain,
! [X77,X78] : '==>'('==>'(X77,X78),X78) = '==>'('==>'(X78,X77),X77),
inference(variable_rename,[status(thm)],[sos_13]) ).
cnf(c_0_31,plain,
( '0' = X1
| ~ '>='('0',X1) ),
inference(spm,[status(thm)],[c_0_19,c_0_21]) ).
cnf(c_0_32,plain,
'>='(X1,'==>'(X2,'0')),
inference(spm,[status(thm)],[c_0_11,c_0_21]) ).
fof(c_0_33,negated_conjecture,
'==>'('==>'(esk1_0,'1'),'1') != esk1_0,
inference(skolemize,[status(esa)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[c_0_26])])]) ).
cnf(c_0_34,plain,
( '>='(X1,'==>'('1',X2))
| ~ '>='('1',X2) ),
inference(spm,[status(thm)],[c_0_27,c_0_28]) ).
cnf(c_0_35,plain,
'>='('1',X1),
inference(spm,[status(thm)],[c_0_29,c_0_28]) ).
cnf(c_0_36,plain,
'==>'('==>'(X1,X2),X2) = '==>'('==>'(X2,X1),X1),
inference(split_conjunct,[status(thm)],[c_0_30]) ).
cnf(c_0_37,plain,
'==>'(X1,'0') = '0',
inference(spm,[status(thm)],[c_0_31,c_0_32]) ).
cnf(c_0_38,negated_conjecture,
'==>'('==>'(esk1_0,'1'),'1') != esk1_0,
inference(split_conjunct,[status(thm)],[c_0_33]) ).
cnf(c_0_39,plain,
'>='(X1,'==>'('1',X2)),
inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_34,c_0_35])]) ).
cnf(c_0_40,plain,
'>='('+'(X1,'==>'(X1,X2)),X2),
inference(spm,[status(thm)],[c_0_24,c_0_16]) ).
cnf(c_0_41,plain,
'==>'('==>'('0',X1),X1) = '0',
inference(spm,[status(thm)],[c_0_36,c_0_37]) ).
cnf(c_0_42,negated_conjecture,
'==>'('==>'('1',esk1_0),esk1_0) != esk1_0,
inference(rw,[status(thm)],[c_0_38,c_0_36]) ).
cnf(c_0_43,plain,
'==>'('1',X1) = '0',
inference(spm,[status(thm)],[c_0_31,c_0_39]) ).
cnf(c_0_44,plain,
'>='('==>'('0',X1),X1),
inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_40,c_0_41]),c_0_12]) ).
cnf(c_0_45,plain,
'>='(X1,'==>'(X2,X1)),
inference(spm,[status(thm)],[c_0_27,c_0_29]) ).
cnf(c_0_46,negated_conjecture,
'==>'('0',esk1_0) != esk1_0,
inference(rw,[status(thm)],[c_0_42,c_0_43]) ).
cnf(c_0_47,plain,
'==>'('0',X1) = X1,
inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_19,c_0_44]),c_0_45])]) ).
cnf(c_0_48,negated_conjecture,
$false,
inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_46,c_0_47])]),
[proof] ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12 % Problem : LCL899+1 : TPTP v9.2.1. Released v5.5.0.
% 0.00/0.12 % Command : /export/starexec/sandbox/solver/bin/lemma_parallel_prover %s --lemma-prover /export/starexec/sandbox/solver/bin/cse --final-prover /export/starexec/sandbox/solver/bin/eprover --proof-time %d --global-time-limit %d
% 0.15/0.33 % Computer : n028.cluster.edu
% 0.15/0.33 % Model : x86_64 x86_64
% 0.15/0.33 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.15/0.33 % Memory : 8042.1875MB
% 0.15/0.33 % OS : Linux 3.10.0-693.el7.x86_64
% 0.15/0.33 % CPULimit : 300
% 0.15/0.33 % WCLimit : 300
% 0.15/0.33 % DateTime : Mon May 4 23:16:30 EDT 2026
% 0.15/0.33 % CPUTime :
% 0.15/0.34 % start to proof: theBenchmark
% 1.27/1.72 % Version : CSE_E---1.7
% 1.27/1.72 % Problem : theBenchmark.p
% 1.27/1.72 % SZS status Theorem for theBenchmark.p
% 1.27/1.72 % SZS output start CNFRefutation
% See solution above
% 1.27/1.72 % Total time : 1.371s
%------------------------------------------------------------------------------