%------------------------------------------------------------------------------
% File : Leo-III---1.8.0
% Problem : KRS158+1 : TPTP v9.3.1. Released v3.1.0.
% Transfm : none
% Format : tptp:raw
% Command : java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox2/solver/bin/leo3.jar /export/starexec/sandbox2/benchmark/theBenchmark.p -t 300 -p --atp eprover=/export/starexec/sandbox2/solver/bin/externals/eprover --instantiate 39
% Computer : n019.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 : Sun Sep 27 07:44:47 AM UTC 2026
% Result : Theorem 7.84s 9.16s
% Output : Refutation 7.92s
% Verified :
% SZS Type : Refutation
% Derivation depth : 3
% Number of leaves : 31
% Syntax : Number of formulae : 64 ( 23 unt; 0 typ; 0 def)
% Number of atoms : 199 ( 0 equ; 0 cnn)
% Maximal formula atoms : 15 ( 3 avg)
% Number of connectives : 394 ( 23 ~; 0 |; 79 &; 236 @)
% ( 18 <=>; 38 =>; 0 <=; 0 <~>)
% Maximal formula depth : 13 ( 5 avg)
% Number of types : 2 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of symbols : 26 ( 25 usr; 4 con; 0-2 aty)
% Number of variables : 74 ( 0 ^; 44 !; 30 ?; 74 :)
% Comments :
%------------------------------------------------------------------------------
thf(cowlThing_decl,type,
cowlThing: $i > $o ).
thf(cowlNothing_decl,type,
cowlNothing: $i > $o ).
thf(xsd_string_decl,type,
xsd_string: $i > $o ).
thf(xsd_integer_decl,type,
xsd_integer: $i > $o ).
thf(cC18_decl,type,
cC18: $i > $o ).
thf(iV16560_decl,type,
iV16560: $i ).
thf(cC14_decl,type,
cC14: $i > $o ).
thf(cC8_decl,type,
cC8: $i > $o ).
thf(cC16_decl,type,
cC16: $i > $o ).
thf(cC6_decl,type,
cC6: $i > $o ).
thf(iV16561_decl,type,
iV16561: $i ).
thf(cC12_decl,type,
cC12: $i > $o ).
thf(iV16562_decl,type,
iV16562: $i ).
thf(cC4_decl,type,
cC4: $i > $o ).
thf(ra_Px6_decl,type,
ra_Px6: $i > $i > $o ).
thf(cC10_decl,type,
cC10: $i > $o ).
thf(ra_Px3_decl,type,
ra_Px3: $i > $i > $o ).
thf(cC10xcomp_decl,type,
cC10xcomp: $i > $o ).
thf(rR1_decl,type,
rR1: $i > $i > $o ).
thf(cC2xcomp_decl,type,
cC2xcomp: $i > $o ).
thf(ra_Px1_decl,type,
ra_Px1: $i > $i > $o ).
thf(cC2_decl,type,
cC2: $i > $o ).
thf(cC4xcomp_decl,type,
cC4xcomp: $i > $o ).
thf(cTEST_decl,type,
cTEST: $i > $o ).
thf(cTOP_decl,type,
cTOP: $i > $o ).
thf(5,axiom,
! [A: $i] :
( ( A @ cC10xcomp )
<=> ~ ? [B: $i] : ( B @ ( A @ ra_Px3 ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_4) ).
thf(52,plain,
! [A: $i] :
( ( ~ ? [B: $i] : ( B @ ( A @ ra_Px3 ) )
=> ( A @ cC10xcomp ) )
& ( ( A @ cC10xcomp )
=> ~ ? [B: $i] : ( B @ ( A @ ra_Px3 ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[5]) ).
thf(17,axiom,
iV16561 @ cC2xcomp,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_25) ).
thf(121,plain,
iV16561 @ cC2xcomp,
inference(defexp_and_simp_and_etaexpand,[status(thm)],[17]) ).
thf(1,conjecture,
( ( iV16562 @ cowlThing )
& ( iV16562 @ cC12 )
& ( iV16561 @ cowlThing )
& ( iV16561 @ cC6 )
& ( iV16560 @ cowlThing )
& ( iV16560 @ cC16 )
& ( iV16560 @ cC8 )
& ( iV16560 @ cC14 )
& ( iV16560 @ cC18 )
& ! [A: $i] :
( ( A @ xsd_string )
<=> ~ ( A @ xsd_integer ) )
& ! [A: $i] :
( ~ ( A @ cowlNothing )
& ( A @ cowlThing ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',the_axiom) ).
thf(2,negated_conjecture,
~ ( ( iV16562 @ cowlThing )
& ( iV16562 @ cC12 )
& ( iV16561 @ cowlThing )
& ( iV16561 @ cC6 )
& ( iV16560 @ cowlThing )
& ( iV16560 @ cC16 )
& ( iV16560 @ cC8 )
& ( iV16560 @ cC14 )
& ( iV16560 @ cC18 )
& ! [A: $i] :
( ( A @ xsd_string )
<=> ~ ( A @ xsd_integer ) )
& ! [A: $i] :
( ~ ( A @ cowlNothing )
& ( A @ cowlThing ) ) ),
inference(neg_conjecture,[status(cth)],[1]) ).
thf(33,plain,
~ ( ( iV16562 @ cowlThing )
& ( iV16562 @ cC12 )
& ( iV16561 @ cowlThing )
& ( iV16561 @ cC6 )
& ( iV16560 @ cowlThing )
& ( iV16560 @ cC16 )
& ( iV16560 @ cC8 )
& ( iV16560 @ cC14 )
& ( iV16560 @ cC18 )
& ! [A: $i] :
( ( ~ ( A @ xsd_integer )
=> ( A @ xsd_string ) )
& ( ( A @ xsd_string )
=> ~ ( A @ xsd_integer ) ) )
& ! [A: $i] :
( ~ ( A @ cowlNothing )
& ( A @ cowlThing ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).
thf(7,axiom,
! [A: $i] :
( ( A @ cC2xcomp )
<=> ? [B: $i] : ( B @ ( A @ ra_Px1 ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_10) ).
thf(65,plain,
! [A: $i] :
( ( ? [B: $i] : ( B @ ( A @ ra_Px1 ) )
=> ( A @ cC2xcomp ) )
& ( ( A @ cC2xcomp )
=> ? [B: $i] : ( B @ ( A @ ra_Px1 ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[7]) ).
thf(25,axiom,
! [A: $i] :
( ( A @ ( iV16562 @ rR1 ) )
=> ( A @ cC2 ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_27) ).
thf(141,plain,
! [A: $i] :
( ( A @ ( iV16562 @ rR1 ) )
=> ( A @ cC2 ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[25]) ).
thf(9,axiom,
! [A: $i] :
( ( A @ cC4xcomp )
<=> ~ ? [B: $i] : ( B @ ( A @ ra_Px6 ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_13) ).
thf(77,plain,
! [A: $i] :
( ( ~ ? [B: $i] : ( B @ ( A @ ra_Px6 ) )
=> ( A @ cC4xcomp ) )
& ( ( A @ cC4xcomp )
=> ~ ? [B: $i] : ( B @ ( A @ ra_Px6 ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[9]) ).
thf(13,axiom,
! [A: $i] :
( ( A @ cTEST )
<=> ( ( A @ cC18 )
& ( A @ cTOP ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_16) ).
thf(98,plain,
! [A: $i] :
( ( ( ( A @ cC18 )
& ( A @ cTOP ) )
=> ( A @ cTEST ) )
& ( ( A @ cTEST )
=> ( ( A @ cC18 )
& ( A @ cTOP ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[13]) ).
thf(12,axiom,
! [A: $i] :
( ( A @ cC6 )
<=> ( ( A @ cC2xcomp )
& ( A @ cC4xcomp ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_14) ).
thf(91,plain,
! [A: $i] :
( ( ( ( A @ cC2xcomp )
& ( A @ cC4xcomp ) )
=> ( A @ cC6 ) )
& ( ( A @ cC6 )
=> ( ( A @ cC2xcomp )
& ( A @ cC4xcomp ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[12]) ).
thf(20,axiom,
iV16562 @ ( iV16560 @ rR1 ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_20) ).
thf(130,plain,
iV16562 @ ( iV16560 @ rR1 ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[20]) ).
thf(26,axiom,
iV16561 @ cC4xcomp,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_24) ).
thf(143,plain,
iV16561 @ cC4xcomp,
inference(defexp_and_simp_and_etaexpand,[status(thm)],[26]) ).
thf(6,axiom,
! [A: $i] :
( ( A @ cC10 )
<=> ? [B: $i] :
( ( B @ cC2xcomp )
& ( B @ ( A @ rR1 ) ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_3) ).
thf(58,plain,
! [A: $i] :
( ( ? [B: $i] :
( ( B @ cC2xcomp )
& ( B @ ( A @ rR1 ) ) )
=> ( A @ cC10 ) )
& ( ( A @ cC10 )
=> ? [B: $i] :
( ( B @ cC2xcomp )
& ( B @ ( A @ rR1 ) ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[6]) ).
thf(29,axiom,
iV16560 @ cTEST,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_18) ).
thf(151,plain,
iV16560 @ cTEST,
inference(defexp_and_simp_and_etaexpand,[status(thm)],[29]) ).
thf(15,axiom,
! [A: $i] :
( ( A @ cC14 )
<=> ? [B: $i] :
( ( B @ cC12 )
& ( B @ ( A @ rR1 ) ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_6) ).
thf(107,plain,
! [A: $i] :
( ( ? [B: $i] :
( ( B @ cC12 )
& ( B @ ( A @ rR1 ) ) )
=> ( A @ cC14 ) )
& ( ( A @ cC14 )
=> ? [B: $i] :
( ( B @ cC12 )
& ( B @ ( A @ rR1 ) ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[15]) ).
thf(21,axiom,
iV16561 @ ( iV16560 @ rR1 ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_21) ).
thf(131,plain,
iV16561 @ ( iV16560 @ rR1 ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[21]) ).
thf(4,axiom,
! [A: $i] :
( ( A @ cC10 )
<=> ? [B: $i] : ( B @ ( A @ ra_Px3 ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_2) ).
thf(46,plain,
! [A: $i] :
( ( ? [B: $i] : ( B @ ( A @ ra_Px3 ) )
=> ( A @ cC10 ) )
& ( ( A @ cC10 )
=> ? [B: $i] : ( B @ ( A @ ra_Px3 ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[4]) ).
thf(30,axiom,
! [A: $i] :
( ~ ( A @ cowlNothing )
& ( A @ cowlThing ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_0) ).
thf(152,plain,
! [A: $i] :
( ~ ( A @ cowlNothing )
& ( A @ cowlThing ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[30]) ).
thf(22,axiom,
iV16562 @ cC10xcomp,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_28) ).
thf(132,plain,
iV16562 @ cC10xcomp,
inference(defexp_and_simp_and_etaexpand,[status(thm)],[22]) ).
thf(23,axiom,
iV16562 @ cC2xcomp,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_29) ).
thf(133,plain,
iV16562 @ cC2xcomp,
inference(defexp_and_simp_and_etaexpand,[status(thm)],[23]) ).
thf(24,axiom,
! [A: $i] :
( ( A @ cC12 )
<=> ( ( A @ cC2xcomp )
& ( A @ cC10xcomp ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_5) ).
thf(134,plain,
! [A: $i] :
( ( ( ( A @ cC2xcomp )
& ( A @ cC10xcomp ) )
=> ( A @ cC12 ) )
& ( ( A @ cC12 )
=> ( ( A @ cC2xcomp )
& ( A @ cC10xcomp ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[24]) ).
thf(14,axiom,
! [A: $i] :
( ( A @ ( iV16561 @ rR1 ) )
=> ( A @ cC2 ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_23) ).
thf(105,plain,
! [A: $i] :
( ( A @ ( iV16561 @ rR1 ) )
=> ( A @ cC2 ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[14]) ).
thf(8,axiom,
! [A: $i] :
( ( A @ cC2 )
<=> ~ ? [B: $i] : ( B @ ( A @ ra_Px1 ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_9) ).
thf(71,plain,
! [A: $i] :
( ( ~ ? [B: $i] : ( B @ ( A @ ra_Px1 ) )
=> ( A @ cC2 ) )
& ( ( A @ cC2 )
=> ~ ? [B: $i] : ( B @ ( A @ ra_Px1 ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[8]) ).
thf(27,axiom,
iV16560 @ cowlThing,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_17) ).
thf(144,plain,
iV16560 @ cowlThing,
inference(defexp_and_simp_and_etaexpand,[status(thm)],[27]) ).
thf(32,axiom,
! [A: $i] :
( ( A @ cC16 )
<=> ( ( A @ cC8 )
& ( A @ cC14 ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_7) ).
thf(159,plain,
! [A: $i] :
( ( ( ( A @ cC8 )
& ( A @ cC14 ) )
=> ( A @ cC16 ) )
& ( ( A @ cC16 )
=> ( ( A @ cC8 )
& ( A @ cC14 ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[32]) ).
thf(19,axiom,
! [A: $i] :
( ( A @ cC8 )
<=> ? [B: $i] :
( ( B @ cC6 )
& ( B @ ( A @ rR1 ) ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_15) ).
thf(123,plain,
! [A: $i] :
( ( ? [B: $i] :
( ( B @ cC6 )
& ( B @ ( A @ rR1 ) ) )
=> ( A @ cC8 ) )
& ( ( A @ cC8 )
=> ? [B: $i] :
( ( B @ cC6 )
& ( B @ ( A @ rR1 ) ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[19]) ).
thf(28,axiom,
! [A: $i] :
( ( A @ xsd_string )
<=> ~ ( A @ xsd_integer ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_1) ).
thf(145,plain,
! [A: $i] :
( ( ~ ( A @ xsd_integer )
=> ( A @ xsd_string ) )
& ( ( A @ xsd_string )
=> ~ ( A @ xsd_integer ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[28]) ).
thf(3,axiom,
! [A: $i] :
( ( A @ cC4 )
<=> ? [B: $i] : ( B @ ( A @ ra_Px6 ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_11) ).
thf(40,plain,
! [A: $i] :
( ( ? [B: $i] : ( B @ ( A @ ra_Px6 ) )
=> ( A @ cC4 ) )
& ( ( A @ cC4 )
=> ? [B: $i] : ( B @ ( A @ ra_Px6 ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[3]) ).
thf(31,axiom,
iV16560 @ cTOP,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_19) ).
thf(158,plain,
iV16560 @ cTOP,
inference(defexp_and_simp_and_etaexpand,[status(thm)],[31]) ).
thf(16,axiom,
! [A: $i] :
( ( A @ cC18 )
<=> ( ( A @ cC16 )
& ( A @ cTOP ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_8) ).
thf(114,plain,
! [A: $i] :
( ( ( ( A @ cC16 )
& ( A @ cTOP ) )
=> ( A @ cC18 ) )
& ( ( A @ cC18 )
=> ( ( A @ cC16 )
& ( A @ cTOP ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[16]) ).
thf(11,axiom,
iV16562 @ cowlThing,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_26) ).
thf(90,plain,
iV16562 @ cowlThing,
inference(defexp_and_simp_and_etaexpand,[status(thm)],[11]) ).
thf(18,axiom,
iV16561 @ cowlThing,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_22) ).
thf(122,plain,
iV16561 @ cowlThing,
inference(defexp_and_simp_and_etaexpand,[status(thm)],[18]) ).
thf(10,axiom,
! [A: $i] :
( ( A @ cC4 )
<=> ? [B: $i] :
( ( B @ cC2xcomp )
& ( B @ ( A @ rR1 ) ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',axiom_12) ).
thf(83,plain,
! [A: $i] :
( ( ? [B: $i] :
( ( B @ cC2xcomp )
& ( B @ ( A @ rR1 ) ) )
=> ( A @ cC4 ) )
& ( ( A @ cC4 )
=> ? [B: $i] :
( ( B @ cC2xcomp )
& ( B @ ( A @ rR1 ) ) ) ) ),
inference(defexp_and_simp_and_etaexpand,[status(thm)],[10]) ).
thf(166,plain,
$false,
inference(e,[status(thm)],[52,121,33,65,141,77,98,91,130,143,58,151,107,131,46,152,132,133,134,105,71,144,159,123,145,40,158,114,90,122,83]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.05 % Problem : KRS158+1 : TPTP v9.3.1. Released v3.1.0.
% 0.00/0.12 % Command : java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox2/solver/bin/leo3.jar /export/starexec/sandbox2/benchmark/theBenchmark.p -t 300 -p --atp eprover=/export/starexec/sandbox2/solver/bin/externals/eprover --instantiate 39
% 0.25/5.51 % Computer : n019.cluster.edu
% 0.25/5.51 % Model : x86_64 x86_64
% 0.25/5.51 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.25/5.51 % Memory : 8046.5625MB
% 0.25/5.51 % OS : Linux 6.8.0-71-generic
% 0.25/5.51 % CPULimit : 300
% 0.25/5.51 % WCLimit : 300
% 0.25/5.51 % DateTime : Fri Sep 25 19:42:11 UTC 2026
% 0.25/5.51 % CPUTime :
% 0.25/5.51 Running java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox2/solver/bin/leo3.jar /export/starexec/sandbox2/benchmark/theBenchmark.p -t 300 -p --atp eprover=/export/starexec/sandbox2/solver/bin/externals/eprover --instantiate 39
% 1.39/6.41 % [INFO] Parsing problem /export/starexec/sandbox2/benchmark/theBenchmark.p ...
% 2.15/6.72 % [INFO] Parsing done (313ms).
% 2.15/6.75 % [INFO] Running in sequential loop mode.
% 3.42/7.40 % [INFO] eprover registered as external prover.
% 3.42/7.41 % [INFO] Scanning for conjecture ...
% 3.60/7.57 % [INFO] Found a conjecture (or negated_conjecture) and 30 axioms. Running axiom selection ...
% 3.79/7.70 % [INFO] Axiom selection finished. Selected 30 axioms (removed 0 axioms).
% 3.98/7.74 % [INFO] Problem is first-order (TPTP FOF).
% 3.98/7.76 % [INFO] Type checking passed.
% 3.98/7.77 % [CONFIG] Using configuration: timeout(300) with strategy<name(default),share(1.0),primSubst(3),sos(false),unifierCount(4),uniDepth(8),boolExt(true),choice(true),renaming(true),funcspec(false), domConstr(0),specialInstances(39),restrictUniAttempts(true),termOrdering(CPO)>. Searching for refutation ...
% 7.54/9.15 % External prover 'e' found a proof!
% 7.54/9.15 % [INFO] Killing All external provers ...
% 7.54/9.15 % Time passed: 3420ms (effective reasoning time: 2394ms)
% 7.54/9.15 % Solved by strategy<name(default),share(1.0),primSubst(3),sos(false),unifierCount(4),uniDepth(8),boolExt(true),choice(true),renaming(true),funcspec(false), domConstr(0),specialInstances(39),restrictUniAttempts(true),termOrdering(CPO)>
% 7.54/9.16 % Axioms used in derivation (30): axiom_10, axiom_22, axiom_15, axiom_2, axiom_27, axiom_6, axiom_16, axiom_3, axiom_20, axiom_24, axiom_1, axiom_28, axiom_8, axiom_17, axiom_25, axiom_0, axiom_23, axiom_9, axiom_14, axiom_4, axiom_7, axiom_26, axiom_21, axiom_19, axiom_5, axiom_13, axiom_29, axiom_11, axiom_18, axiom_12
% 7.54/9.16 % No. of inferences in proof: 64
% 7.84/9.16 % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : 3420 ms resp. 2394 ms w/o parsing
% 7.92/9.29 % SZS output start Refutation for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
% 7.92/9.30 % [INFO] Killing All external provers ...
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