TSTP Solution File: SET902+1 by Princess---230619

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Princess---230619
% Problem  : SET902+1 : TPTP v8.1.2. Released v3.2.0.
% Transfm  : none
% Format   : tptp
% Command  : princess -inputFormat=tptp +threads -portfolio=casc +printProof -timeoutSec=%d %s

% Computer : n029.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 : Thu Aug 31 15:26:57 EDT 2023

% Result   : Theorem 7.00s 1.86s
% Output   : Proof 8.85s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.13  % Problem  : SET902+1 : TPTP v8.1.2. Released v3.2.0.
% 0.00/0.14  % Command  : princess -inputFormat=tptp +threads -portfolio=casc +printProof -timeoutSec=%d %s
% 0.13/0.35  % Computer : n029.cluster.edu
% 0.13/0.35  % Model    : x86_64 x86_64
% 0.13/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.35  % Memory   : 8042.1875MB
% 0.13/0.35  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.35  % CPULimit : 300
% 0.13/0.35  % WCLimit  : 300
% 0.13/0.35  % DateTime : Sat Aug 26 10:31:55 EDT 2023
% 0.13/0.35  % CPUTime  : 
% 0.19/0.64  ________       _____
% 0.19/0.64  ___  __ \_________(_)________________________________
% 0.19/0.64  __  /_/ /_  ___/_  /__  __ \  ___/  _ \_  ___/_  ___/
% 0.19/0.64  _  ____/_  /   _  / _  / / / /__ /  __/(__  )_(__  )
% 0.19/0.64  /_/     /_/    /_/  /_/ /_/\___/ \___//____/ /____/
% 0.19/0.64  
% 0.19/0.64  A Theorem Prover for First-Order Logic modulo Linear Integer Arithmetic
% 0.19/0.64  (2023-06-19)
% 0.19/0.64  
% 0.19/0.64  (c) Philipp Rümmer, 2009-2023
% 0.19/0.64  Contributors: Peter Backeman, Peter Baumgartner, Angelo Brillout, Zafer Esen,
% 0.19/0.64                Amanda Stjerna.
% 0.19/0.64  Free software under BSD-3-Clause.
% 0.19/0.64  
% 0.19/0.64  For more information, visit http://www.philipp.ruemmer.org/princess.shtml
% 0.19/0.64  
% 0.19/0.64  Loading /export/starexec/sandbox2/benchmark/theBenchmark.p ...
% 0.19/0.66  Running up to 7 provers in parallel.
% 0.19/0.68  Prover 0: Options:  +triggersInConjecture +genTotalityAxioms +tightFunctionScopes -clausifier=simple -reverseFunctionalityPropagation -boolFunsAsPreds -triggerStrategy=allUni -realRatSaturationRounds=0 -ignoreQuantifiers -constructProofs=never -generateTriggers=all -randomSeed=1042961893
% 0.19/0.68  Prover 1: Options:  +triggersInConjecture -genTotalityAxioms -tightFunctionScopes -clausifier=none -reverseFunctionalityPropagation -boolFunsAsPreds -triggerStrategy=maximal -realRatSaturationRounds=0 +ignoreQuantifiers -constructProofs=always -generateTriggers=all -randomSeed=-1571432423
% 0.19/0.68  Prover 2: Options:  +triggersInConjecture +genTotalityAxioms -tightFunctionScopes -clausifier=simple +reverseFunctionalityPropagation +boolFunsAsPreds -triggerStrategy=allMinimalAndEmpty -realRatSaturationRounds=1 -ignoreQuantifiers -constructProofs=never -generateTriggers=all -randomSeed=-1065072994
% 0.19/0.68  Prover 3: Options:  +triggersInConjecture -genTotalityAxioms -tightFunctionScopes -clausifier=none -reverseFunctionalityPropagation -boolFunsAsPreds -triggerStrategy=maximal -realRatSaturationRounds=1 +ignoreQuantifiers -constructProofs=never -generateTriggers=all -randomSeed=1922548996
% 0.19/0.68  Prover 4: Options:  +triggersInConjecture -genTotalityAxioms -tightFunctionScopes -clausifier=simple -reverseFunctionalityPropagation -boolFunsAsPreds -triggerStrategy=allUni -realRatSaturationRounds=0 +ignoreQuantifiers -constructProofs=always -generateTriggers=all -randomSeed=1868514696
% 0.19/0.68  Prover 5: Options:  +triggersInConjecture -genTotalityAxioms +tightFunctionScopes -clausifier=none +reverseFunctionalityPropagation +boolFunsAsPreds -triggerStrategy=allMaximal -realRatSaturationRounds=1 -ignoreQuantifiers -constructProofs=never -generateTriggers=complete -randomSeed=1259561288
% 0.19/0.68  Prover 6: Options:  -triggersInConjecture -genTotalityAxioms +tightFunctionScopes -clausifier=none +reverseFunctionalityPropagation -boolFunsAsPreds -triggerStrategy=maximalOutermost -realRatSaturationRounds=0 -ignoreQuantifiers -constructProofs=never -generateTriggers=all -randomSeed=-1399714365
% 2.13/1.11  Prover 1: Preprocessing ...
% 2.13/1.11  Prover 4: Preprocessing ...
% 2.55/1.16  Prover 6: Preprocessing ...
% 2.55/1.16  Prover 5: Preprocessing ...
% 2.55/1.16  Prover 2: Preprocessing ...
% 2.55/1.16  Prover 3: Preprocessing ...
% 2.55/1.16  Prover 0: Preprocessing ...
% 3.98/1.39  Prover 1: Warning: ignoring some quantifiers
% 3.98/1.45  Prover 3: Warning: ignoring some quantifiers
% 3.98/1.47  Prover 1: Constructing countermodel ...
% 3.98/1.47  Prover 4: Constructing countermodel ...
% 3.98/1.48  Prover 5: Proving ...
% 3.98/1.48  Prover 3: Constructing countermodel ...
% 3.98/1.48  Prover 0: Proving ...
% 3.98/1.48  Prover 6: Proving ...
% 3.98/1.50  Prover 2: Proving ...
% 5.70/1.69  Prover 3: gave up
% 5.70/1.69  Prover 7: Options:  +triggersInConjecture -genTotalityAxioms +tightFunctionScopes -clausifier=simple +reverseFunctionalityPropagation +boolFunsAsPreds -triggerStrategy=allUni -realRatSaturationRounds=1 +ignoreQuantifiers -constructProofs=always -generateTriggers=all -randomSeed=-236303470
% 6.26/1.75  Prover 7: Preprocessing ...
% 6.26/1.82  Prover 7: Warning: ignoring some quantifiers
% 6.26/1.83  Prover 7: Constructing countermodel ...
% 7.00/1.86  Prover 2: proved (1187ms)
% 7.00/1.86  
% 7.00/1.86  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p
% 7.00/1.86  
% 7.00/1.88  Prover 1: gave up
% 7.00/1.88  Prover 0: stopped
% 7.00/1.89  Prover 6: stopped
% 7.00/1.89  Prover 5: stopped
% 7.00/1.90  Prover 8: Options:  +triggersInConjecture +genTotalityAxioms -tightFunctionScopes -clausifier=none -reverseFunctionalityPropagation -boolFunsAsPreds -triggerStrategy=maximal -realRatSaturationRounds=0 +ignoreQuantifiers -constructProofs=always -generateTriggers=all -randomSeed=-200781089
% 7.00/1.90  Prover 10: Options:  +triggersInConjecture -genTotalityAxioms +tightFunctionScopes -clausifier=simple -reverseFunctionalityPropagation +boolFunsAsPreds -triggerStrategy=maximal -realRatSaturationRounds=1 +ignoreQuantifiers -constructProofs=always -generateTriggers=all -randomSeed=919308125
% 7.00/1.90  Prover 11: Options:  +triggersInConjecture -genTotalityAxioms +tightFunctionScopes -clausifier=simple -reverseFunctionalityPropagation -boolFunsAsPreds -triggerStrategy=allUni -realRatSaturationRounds=1 +ignoreQuantifiers -constructProofs=always -generateTriggers=all -randomSeed=-1509710984
% 7.47/1.90  Prover 13: Options:  +triggersInConjecture -genTotalityAxioms -tightFunctionScopes -clausifier=simple -reverseFunctionalityPropagation +boolFunsAsPreds -triggerStrategy=maximal -realRatSaturationRounds=0 +ignoreQuantifiers -constructProofs=always -generateTriggers=complete -randomSeed=1138197443
% 7.47/1.90  Prover 16: Options:  +triggersInConjecture -genTotalityAxioms +tightFunctionScopes -clausifier=simple +reverseFunctionalityPropagation +boolFunsAsPreds -triggerStrategy=maximal -realRatSaturationRounds=1 +ignoreQuantifiers -constructProofs=always -generateTriggers=completeFrugal -randomSeed=-2043353683
% 7.47/1.90  Prover 10: Preprocessing ...
% 7.47/1.92  Prover 8: Preprocessing ...
% 7.47/1.93  Prover 11: Preprocessing ...
% 7.47/1.94  Prover 16: Preprocessing ...
% 7.47/1.96  Prover 13: Preprocessing ...
% 7.89/1.97  Prover 10: Warning: ignoring some quantifiers
% 7.89/1.98  Prover 10: Constructing countermodel ...
% 7.89/1.98  Prover 4: Found proof (size 39)
% 7.89/1.98  Prover 4: proved (1305ms)
% 7.89/1.99  Prover 10: stopped
% 7.89/1.99  Prover 7: stopped
% 7.89/1.99  Prover 16: stopped
% 7.89/1.99  Prover 13: stopped
% 7.89/2.00  Prover 8: Warning: ignoring some quantifiers
% 7.89/2.01  Prover 8: Constructing countermodel ...
% 7.89/2.01  Prover 11: Constructing countermodel ...
% 7.89/2.01  Prover 8: stopped
% 7.89/2.02  Prover 11: stopped
% 7.89/2.02  
% 7.89/2.02  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p
% 7.89/2.02  
% 7.89/2.03  % SZS output start Proof for theBenchmark
% 7.89/2.03  Assumptions after simplification:
% 7.89/2.03  ---------------------------------
% 7.89/2.03  
% 7.89/2.03    (commutativity_k2_xboole_0)
% 8.48/2.08     ! [v0: $i] :  ! [v1: $i] :  ! [v2: $i] : ( ~ (set_union2(v1, v0) = v2) |  ~
% 8.48/2.08      $i(v1) |  ~ $i(v0) | (set_union2(v0, v1) = v2 & $i(v2))) &  ! [v0: $i] :  !
% 8.48/2.08    [v1: $i] :  ! [v2: $i] : ( ~ (set_union2(v0, v1) = v2) |  ~ $i(v1) |  ~ $i(v0)
% 8.48/2.08      | (set_union2(v1, v0) = v2 & $i(v2)))
% 8.48/2.08  
% 8.48/2.08    (idempotence_k2_xboole_0)
% 8.48/2.08     ! [v0: $i] :  ! [v1: $i] : (v1 = v0 |  ~ (set_union2(v0, v0) = v1) |  ~
% 8.48/2.08      $i(v0))
% 8.48/2.08  
% 8.48/2.08    (l4_zfmisc_1)
% 8.48/2.09    $i(empty_set) &  ! [v0: $i] :  ! [v1: $i] :  ! [v2: $i] : (v2 = v0 | v0 =
% 8.48/2.09      empty_set |  ~ (subset(v0, v2) = 0) |  ~ (singleton(v1) = v2) |  ~ $i(v1) | 
% 8.48/2.09      ~ $i(v0)) &  ! [v0: $i] :  ! [v1: $i] :  ! [v2: int] : (v2 = 0 |  ~
% 8.48/2.09      (subset(v0, v0) = v2) |  ~ (singleton(v1) = v0) |  ~ $i(v1) |  ~ $i(v0)) & 
% 8.48/2.09    ! [v0: $i] :  ! [v1: $i] :  ! [v2: int] : (v2 = 0 |  ~ (subset(empty_set, v1)
% 8.48/2.09        = v2) |  ~ (singleton(v0) = v1) |  ~ $i(v0))
% 8.48/2.09  
% 8.48/2.09    (t43_zfmisc_1)
% 8.48/2.09    $i(empty_set) &  ? [v0: $i] :  ? [v1: $i] :  ? [v2: $i] :  ? [v3: $i] :
% 8.48/2.09    (singleton(v0) = v3 & set_union2(v1, v2) = v3 & $i(v3) & $i(v2) & $i(v1) &
% 8.48/2.09      $i(v0) & ( ~ (v3 = v2) |  ~ (v1 = empty_set)) & ( ~ (v3 = v1) |  ~ (v2 =
% 8.48/2.09          v1)) & ( ~ (v3 = v1) |  ~ (v2 = empty_set)))
% 8.48/2.09  
% 8.48/2.09    (t7_xboole_1)
% 8.66/2.10     ! [v0: $i] :  ! [v1: $i] :  ! [v2: $i] : ( ~ (set_union2(v0, v1) = v2) |  ~
% 8.66/2.10      $i(v1) |  ~ $i(v0) | subset(v0, v2) = 0)
% 8.66/2.10  
% 8.66/2.10  Further assumptions not needed in the proof:
% 8.66/2.10  --------------------------------------------
% 8.66/2.10  fc1_xboole_0, fc2_xboole_0, fc3_xboole_0, l1_zfmisc_1, rc1_xboole_0,
% 8.66/2.10  rc2_xboole_0, reflexivity_r1_tarski
% 8.66/2.10  
% 8.66/2.10  Those formulas are unsatisfiable:
% 8.66/2.10  ---------------------------------
% 8.66/2.10  
% 8.66/2.10  Begin of proof
% 8.66/2.10  | 
% 8.66/2.10  | ALPHA: (commutativity_k2_xboole_0) implies:
% 8.66/2.10  |   (1)   ! [v0: $i] :  ! [v1: $i] :  ! [v2: $i] : ( ~ (set_union2(v1, v0) = v2)
% 8.66/2.10  |          |  ~ $i(v1) |  ~ $i(v0) | (set_union2(v0, v1) = v2 & $i(v2)))
% 8.66/2.10  | 
% 8.66/2.10  | ALPHA: (l4_zfmisc_1) implies:
% 8.66/2.10  |   (2)   ! [v0: $i] :  ! [v1: $i] :  ! [v2: $i] : (v2 = v0 | v0 = empty_set | 
% 8.66/2.10  |          ~ (subset(v0, v2) = 0) |  ~ (singleton(v1) = v2) |  ~ $i(v1) |  ~
% 8.66/2.10  |          $i(v0))
% 8.66/2.10  | 
% 8.66/2.10  | ALPHA: (t43_zfmisc_1) implies:
% 8.66/2.11  |   (3)   ? [v0: $i] :  ? [v1: $i] :  ? [v2: $i] :  ? [v3: $i] : (singleton(v0)
% 8.66/2.11  |          = v3 & set_union2(v1, v2) = v3 & $i(v3) & $i(v2) & $i(v1) & $i(v0) &
% 8.66/2.11  |          ( ~ (v3 = v2) |  ~ (v1 = empty_set)) & ( ~ (v3 = v1) |  ~ (v2 = v1))
% 8.66/2.11  |          & ( ~ (v3 = v1) |  ~ (v2 = empty_set)))
% 8.66/2.11  | 
% 8.66/2.11  | DELTA: instantiating (3) with fresh symbols all_16_0, all_16_1, all_16_2,
% 8.66/2.11  |        all_16_3 gives:
% 8.66/2.11  |   (4)  singleton(all_16_3) = all_16_0 & set_union2(all_16_2, all_16_1) =
% 8.66/2.11  |        all_16_0 & $i(all_16_0) & $i(all_16_1) & $i(all_16_2) & $i(all_16_3) &
% 8.66/2.11  |        ( ~ (all_16_0 = all_16_1) |  ~ (all_16_2 = empty_set)) & ( ~ (all_16_0
% 8.66/2.11  |            = all_16_2) |  ~ (all_16_1 = all_16_2)) & ( ~ (all_16_0 = all_16_2)
% 8.66/2.11  |          |  ~ (all_16_1 = empty_set))
% 8.66/2.11  | 
% 8.66/2.11  | ALPHA: (4) implies:
% 8.66/2.12  |   (5)  $i(all_16_3)
% 8.66/2.12  |   (6)  $i(all_16_2)
% 8.66/2.12  |   (7)  $i(all_16_1)
% 8.66/2.12  |   (8)  set_union2(all_16_2, all_16_1) = all_16_0
% 8.66/2.12  |   (9)  singleton(all_16_3) = all_16_0
% 8.66/2.12  |   (10)   ~ (all_16_0 = all_16_2) |  ~ (all_16_1 = empty_set)
% 8.66/2.12  |   (11)   ~ (all_16_0 = all_16_2) |  ~ (all_16_1 = all_16_2)
% 8.66/2.12  |   (12)   ~ (all_16_0 = all_16_1) |  ~ (all_16_2 = empty_set)
% 8.66/2.12  | 
% 8.66/2.12  | GROUND_INST: instantiating (1) with all_16_1, all_16_2, all_16_0, simplifying
% 8.66/2.12  |              with (6), (7), (8) gives:
% 8.66/2.12  |   (13)  set_union2(all_16_1, all_16_2) = all_16_0 & $i(all_16_0)
% 8.66/2.12  | 
% 8.66/2.12  | ALPHA: (13) implies:
% 8.66/2.12  |   (14)  set_union2(all_16_1, all_16_2) = all_16_0
% 8.66/2.12  | 
% 8.66/2.12  | GROUND_INST: instantiating (t7_xboole_1) with all_16_2, all_16_1, all_16_0,
% 8.66/2.12  |              simplifying with (6), (7), (8) gives:
% 8.66/2.12  |   (15)  subset(all_16_2, all_16_0) = 0
% 8.66/2.12  | 
% 8.66/2.13  | GROUND_INST: instantiating (t7_xboole_1) with all_16_1, all_16_2, all_16_0,
% 8.66/2.13  |              simplifying with (6), (7), (14) gives:
% 8.66/2.13  |   (16)  subset(all_16_1, all_16_0) = 0
% 8.66/2.13  | 
% 8.66/2.13  | GROUND_INST: instantiating (2) with all_16_2, all_16_3, all_16_0, simplifying
% 8.66/2.13  |              with (5), (6), (9), (15) gives:
% 8.66/2.13  |   (17)  all_16_0 = all_16_2 | all_16_2 = empty_set
% 8.66/2.13  | 
% 8.66/2.13  | GROUND_INST: instantiating (2) with all_16_1, all_16_3, all_16_0, simplifying
% 8.66/2.13  |              with (5), (7), (9), (16) gives:
% 8.66/2.13  |   (18)  all_16_0 = all_16_1 | all_16_1 = empty_set
% 8.66/2.13  | 
% 8.66/2.13  | BETA: splitting (10) gives:
% 8.66/2.13  | 
% 8.66/2.13  | Case 1:
% 8.66/2.13  | | 
% 8.66/2.13  | |   (19)   ~ (all_16_1 = empty_set)
% 8.66/2.13  | | 
% 8.66/2.13  | | BETA: splitting (18) gives:
% 8.66/2.13  | | 
% 8.66/2.13  | | Case 1:
% 8.66/2.13  | | | 
% 8.66/2.13  | | |   (20)  all_16_1 = empty_set
% 8.66/2.13  | | | 
% 8.66/2.13  | | | REDUCE: (19), (20) imply:
% 8.66/2.13  | | |   (21)  $false
% 8.84/2.13  | | | 
% 8.84/2.13  | | | CLOSE: (21) is inconsistent.
% 8.84/2.13  | | | 
% 8.84/2.13  | | Case 2:
% 8.84/2.13  | | | 
% 8.84/2.13  | | |   (22)  all_16_0 = all_16_1
% 8.84/2.13  | | | 
% 8.84/2.13  | | | BETA: splitting (11) gives:
% 8.84/2.13  | | | 
% 8.84/2.13  | | | Case 1:
% 8.84/2.13  | | | | 
% 8.84/2.13  | | | |   (23)   ~ (all_16_0 = all_16_2)
% 8.84/2.13  | | | | 
% 8.85/2.13  | | | | REDUCE: (22), (23) imply:
% 8.85/2.13  | | | |   (24)   ~ (all_16_1 = all_16_2)
% 8.85/2.13  | | | | 
% 8.85/2.13  | | | | BETA: splitting (17) gives:
% 8.85/2.13  | | | | 
% 8.85/2.13  | | | | Case 1:
% 8.85/2.13  | | | | | 
% 8.85/2.14  | | | | |   (25)  all_16_2 = empty_set
% 8.85/2.14  | | | | | 
% 8.85/2.14  | | | | | BETA: splitting (12) gives:
% 8.85/2.14  | | | | | 
% 8.85/2.14  | | | | | Case 1:
% 8.85/2.14  | | | | | | 
% 8.85/2.14  | | | | | |   (26)   ~ (all_16_2 = empty_set)
% 8.85/2.14  | | | | | | 
% 8.85/2.14  | | | | | | REDUCE: (25), (26) imply:
% 8.85/2.14  | | | | | |   (27)  $false
% 8.85/2.14  | | | | | | 
% 8.85/2.14  | | | | | | CLOSE: (27) is inconsistent.
% 8.85/2.14  | | | | | | 
% 8.85/2.14  | | | | | Case 2:
% 8.85/2.14  | | | | | | 
% 8.85/2.14  | | | | | |   (28)   ~ (all_16_0 = all_16_1)
% 8.85/2.14  | | | | | | 
% 8.85/2.14  | | | | | | REDUCE: (22), (28) imply:
% 8.85/2.14  | | | | | |   (29)  $false
% 8.85/2.14  | | | | | | 
% 8.85/2.14  | | | | | | CLOSE: (29) is inconsistent.
% 8.85/2.14  | | | | | | 
% 8.85/2.14  | | | | | End of split
% 8.85/2.14  | | | | | 
% 8.85/2.14  | | | | Case 2:
% 8.85/2.14  | | | | | 
% 8.85/2.14  | | | | |   (30)  all_16_0 = all_16_2
% 8.85/2.14  | | | | | 
% 8.85/2.14  | | | | | COMBINE_EQS: (22), (30) imply:
% 8.85/2.14  | | | | |   (31)  all_16_1 = all_16_2
% 8.85/2.14  | | | | | 
% 8.85/2.14  | | | | | REDUCE: (24), (31) imply:
% 8.85/2.14  | | | | |   (32)  $false
% 8.85/2.14  | | | | | 
% 8.85/2.14  | | | | | CLOSE: (32) is inconsistent.
% 8.85/2.14  | | | | | 
% 8.85/2.14  | | | | End of split
% 8.85/2.14  | | | | 
% 8.85/2.14  | | | Case 2:
% 8.85/2.14  | | | | 
% 8.85/2.14  | | | |   (33)  all_16_0 = all_16_2
% 8.85/2.14  | | | |   (34)   ~ (all_16_1 = all_16_2)
% 8.85/2.14  | | | | 
% 8.85/2.14  | | | | COMBINE_EQS: (22), (33) imply:
% 8.85/2.14  | | | |   (35)  all_16_1 = all_16_2
% 8.85/2.14  | | | | 
% 8.85/2.14  | | | | REDUCE: (34), (35) imply:
% 8.85/2.14  | | | |   (36)  $false
% 8.85/2.14  | | | | 
% 8.85/2.14  | | | | CLOSE: (36) is inconsistent.
% 8.85/2.14  | | | | 
% 8.85/2.14  | | | End of split
% 8.85/2.14  | | | 
% 8.85/2.14  | | End of split
% 8.85/2.14  | | 
% 8.85/2.14  | Case 2:
% 8.85/2.14  | | 
% 8.85/2.14  | |   (37)  all_16_1 = empty_set
% 8.85/2.14  | |   (38)   ~ (all_16_0 = all_16_2)
% 8.85/2.14  | | 
% 8.85/2.14  | | REDUCE: (14), (37) imply:
% 8.85/2.14  | |   (39)  set_union2(empty_set, all_16_2) = all_16_0
% 8.85/2.14  | | 
% 8.85/2.14  | | BETA: splitting (17) gives:
% 8.85/2.14  | | 
% 8.85/2.14  | | Case 1:
% 8.85/2.14  | | | 
% 8.85/2.14  | | |   (40)  all_16_2 = empty_set
% 8.85/2.14  | | | 
% 8.85/2.14  | | | REDUCE: (38), (40) imply:
% 8.85/2.14  | | |   (41)   ~ (all_16_0 = empty_set)
% 8.85/2.14  | | | 
% 8.85/2.14  | | | REDUCE: (39), (40) imply:
% 8.85/2.14  | | |   (42)  set_union2(empty_set, empty_set) = all_16_0
% 8.85/2.14  | | | 
% 8.85/2.14  | | | REDUCE: (6), (40) imply:
% 8.85/2.14  | | |   (43)  $i(empty_set)
% 8.85/2.14  | | | 
% 8.85/2.15  | | | GROUND_INST: instantiating (idempotence_k2_xboole_0) with empty_set,
% 8.85/2.15  | | |              all_16_0, simplifying with (42), (43) gives:
% 8.85/2.15  | | |   (44)  all_16_0 = empty_set
% 8.85/2.15  | | | 
% 8.85/2.15  | | | REDUCE: (41), (44) imply:
% 8.85/2.15  | | |   (45)  $false
% 8.85/2.15  | | | 
% 8.85/2.15  | | | CLOSE: (45) is inconsistent.
% 8.85/2.15  | | | 
% 8.85/2.15  | | Case 2:
% 8.85/2.15  | | | 
% 8.85/2.15  | | |   (46)  all_16_0 = all_16_2
% 8.85/2.15  | | | 
% 8.85/2.15  | | | REDUCE: (38), (46) imply:
% 8.85/2.15  | | |   (47)  $false
% 8.85/2.15  | | | 
% 8.85/2.15  | | | CLOSE: (47) is inconsistent.
% 8.85/2.15  | | | 
% 8.85/2.15  | | End of split
% 8.85/2.15  | | 
% 8.85/2.15  | End of split
% 8.85/2.15  | 
% 8.85/2.15  End of proof
% 8.85/2.15  % SZS output end Proof for theBenchmark
% 8.85/2.15  
% 8.85/2.15  1504ms
%------------------------------------------------------------------------------