TSTP Solution File: SWC102+1 by Z3---4.8.9.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Z3---4.8.9.0
% Problem  : SWC102+1 : TPTP v8.1.0. Released v2.4.0.
% Transfm  : none
% Format   : tptp
% Command  : z3_tptp -proof -model -t:%d -file:%s

% Computer : n008.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 Sep 20 11:55:16 EDT 2022

% Result   : Theorem 0.20s 0.47s
% Output   : Proof 0.20s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.11/0.12  % Problem  : SWC102+1 : TPTP v8.1.0. Released v2.4.0.
% 0.11/0.13  % Command  : z3_tptp -proof -model -t:%d -file:%s
% 0.13/0.34  % Computer : n008.cluster.edu
% 0.13/0.34  % Model    : x86_64 x86_64
% 0.13/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.34  % Memory   : 8042.1875MB
% 0.13/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.34  % CPULimit : 300
% 0.13/0.34  % WCLimit  : 300
% 0.13/0.34  % DateTime : Sat Sep  3 21:35:55 EDT 2022
% 0.13/0.34  % CPUTime  : 
% 0.13/0.35  Z3tptp [4.8.9.0] (c) 2006-20**. Microsoft Corp.
% 0.13/0.35  Usage: tptp [options] [-file:]file
% 0.13/0.35    -h, -?       prints this message.
% 0.13/0.35    -smt2        print SMT-LIB2 benchmark.
% 0.13/0.35    -m, -model   generate model.
% 0.13/0.35    -p, -proof   generate proof.
% 0.13/0.35    -c, -core    generate unsat core of named formulas.
% 0.13/0.35    -st, -statistics display statistics.
% 0.13/0.35    -t:timeout   set timeout (in second).
% 0.13/0.35    -smt2status  display status in smt2 format instead of SZS.
% 0.13/0.35    -check_status check the status produced by Z3 against annotation in benchmark.
% 0.13/0.35    -<param>:<value> configuration parameter and value.
% 0.13/0.35    -o:<output-file> file to place output in.
% 0.20/0.47  % SZS status Theorem
% 0.20/0.47  % SZS output start Proof
% 0.20/0.47  tff(frontsegP_type, type, (
% 0.20/0.47     frontsegP: ( $i * $i ) > $o)).
% 0.20/0.47  tff(tptp_fun_W_49_type, type, (
% 0.20/0.47     tptp_fun_W_49: $i)).
% 0.20/0.47  tff(tptp_fun_U_47_type, type, (
% 0.20/0.47     tptp_fun_U_47: $i)).
% 0.20/0.47  tff(tptp_fun_V_48_type, type, (
% 0.20/0.47     tptp_fun_V_48: $i)).
% 0.20/0.47  tff(ssList_type, type, (
% 0.20/0.47     ssList: $i > $o)).
% 0.20/0.47  tff(tptp_fun_X_50_type, type, (
% 0.20/0.47     tptp_fun_X_50: $i)).
% 0.20/0.47  tff(neq_type, type, (
% 0.20/0.47     neq: ( $i * $i ) > $o)).
% 0.20/0.47  tff(nil_type, type, (
% 0.20/0.47     nil: $i)).
% 0.20/0.47  tff(1,plain,
% 0.20/0.47      ((ssList(U!47) & (ssList(V!48) & ssList(W!49) & (~((neq(U!47, nil) & frontsegP(V!48, U!47)) | (~neq(V!48, nil)) | (~(U!47 = W!49)) | (~(X!50 = W!49)) | (~(V!48 = X!50)) | (~ssList(X!50)))))) <=> (ssList(U!47) & ssList(V!48) & ssList(W!49) & (~((neq(U!47, nil) & frontsegP(V!48, U!47)) | (~neq(V!48, nil)) | (~(U!47 = W!49)) | (~(X!50 = W!49)) | (~(V!48 = X!50)) | (~ssList(X!50)))))),
% 0.20/0.47      inference(rewrite,[status(thm)],[])).
% 0.20/0.47  tff(2,plain,
% 0.20/0.47      ((ssList(V!48) & (ssList(W!49) & (~((neq(U!47, nil) & frontsegP(V!48, U!47)) | (~neq(V!48, nil)) | (~(U!47 = W!49)) | (~(X!50 = W!49)) | (~(V!48 = X!50)) | (~ssList(X!50)))))) <=> (ssList(V!48) & ssList(W!49) & (~((neq(U!47, nil) & frontsegP(V!48, U!47)) | (~neq(V!48, nil)) | (~(U!47 = W!49)) | (~(X!50 = W!49)) | (~(V!48 = X!50)) | (~ssList(X!50)))))),
% 0.20/0.47      inference(rewrite,[status(thm)],[])).
% 0.20/0.47  tff(3,plain,
% 0.20/0.47      (((~(~ssList(W!49))) & (~((~(X!50 = W!49)) | (~(U!47 = W!49)) | (~(V!48 = X!50)) | (neq(U!47, nil) & frontsegP(V!48, U!47)) | (~neq(V!48, nil)) | (~ssList(X!50))))) <=> (ssList(W!49) & (~((neq(U!47, nil) & frontsegP(V!48, U!47)) | (~neq(V!48, nil)) | (~(U!47 = W!49)) | (~(X!50 = W!49)) | (~(V!48 = X!50)) | (~ssList(X!50)))))),
% 0.20/0.47      inference(rewrite,[status(thm)],[])).
% 0.20/0.47  tff(4,plain,
% 0.20/0.47      ((~(~ssList(V!48))) <=> ssList(V!48)),
% 0.20/0.47      inference(rewrite,[status(thm)],[])).
% 0.20/0.47  tff(5,plain,
% 0.20/0.47      (((~(~ssList(V!48))) & ((~(~ssList(W!49))) & (~((~(X!50 = W!49)) | (~(U!47 = W!49)) | (~(V!48 = X!50)) | (neq(U!47, nil) & frontsegP(V!48, U!47)) | (~neq(V!48, nil)) | (~ssList(X!50)))))) <=> (ssList(V!48) & (ssList(W!49) & (~((neq(U!47, nil) & frontsegP(V!48, U!47)) | (~neq(V!48, nil)) | (~(U!47 = W!49)) | (~(X!50 = W!49)) | (~(V!48 = X!50)) | (~ssList(X!50))))))),
% 0.20/0.47      inference(monotonicity,[status(thm)],[4, 3])).
% 0.20/0.47  tff(6,plain,
% 0.20/0.47      (((~(~ssList(V!48))) & ((~(~ssList(W!49))) & (~((~(X!50 = W!49)) | (~(U!47 = W!49)) | (~(V!48 = X!50)) | (neq(U!47, nil) & frontsegP(V!48, U!47)) | (~neq(V!48, nil)) | (~ssList(X!50)))))) <=> (ssList(V!48) & ssList(W!49) & (~((neq(U!47, nil) & frontsegP(V!48, U!47)) | (~neq(V!48, nil)) | (~(U!47 = W!49)) | (~(X!50 = W!49)) | (~(V!48 = X!50)) | (~ssList(X!50)))))),
% 0.20/0.47      inference(transitivity,[status(thm)],[5, 2])).
% 0.20/0.47  tff(7,plain,
% 0.20/0.47      ((~(~ssList(U!47))) <=> ssList(U!47)),
% 0.20/0.47      inference(rewrite,[status(thm)],[])).
% 0.20/0.47  tff(8,plain,
% 0.20/0.47      (((~(~ssList(U!47))) & ((~(~ssList(V!48))) & ((~(~ssList(W!49))) & (~((~(X!50 = W!49)) | (~(U!47 = W!49)) | (~(V!48 = X!50)) | (neq(U!47, nil) & frontsegP(V!48, U!47)) | (~neq(V!48, nil)) | (~ssList(X!50))))))) <=> (ssList(U!47) & (ssList(V!48) & ssList(W!49) & (~((neq(U!47, nil) & frontsegP(V!48, U!47)) | (~neq(V!48, nil)) | (~(U!47 = W!49)) | (~(X!50 = W!49)) | (~(V!48 = X!50)) | (~ssList(X!50))))))),
% 0.20/0.47      inference(monotonicity,[status(thm)],[7, 6])).
% 0.20/0.47  tff(9,plain,
% 0.20/0.47      (((~(~ssList(U!47))) & ((~(~ssList(V!48))) & ((~(~ssList(W!49))) & (~((~(X!50 = W!49)) | (~(U!47 = W!49)) | (~(V!48 = X!50)) | (neq(U!47, nil) & frontsegP(V!48, U!47)) | (~neq(V!48, nil)) | (~ssList(X!50))))))) <=> (ssList(U!47) & ssList(V!48) & ssList(W!49) & (~((neq(U!47, nil) & frontsegP(V!48, U!47)) | (~neq(V!48, nil)) | (~(U!47 = W!49)) | (~(X!50 = W!49)) | (~(V!48 = X!50)) | (~ssList(X!50)))))),
% 0.20/0.47      inference(transitivity,[status(thm)],[8, 1])).
% 0.20/0.47  tff(10,plain,
% 0.20/0.47      ((~![U: $i] : ((~ssList(U)) | ![V: $i] : ((~ssList(V)) | ![W: $i] : ((~ssList(W)) | ![X: $i] : ((~(X = W)) | (~(U = W)) | (~(V = X)) | (neq(U, nil) & frontsegP(V, U)) | (~neq(V, nil)) | (~ssList(X))))))) <=> (~![U: $i] : ((~ssList(U)) | ![V: $i] : ((~ssList(V)) | ![W: $i] : ((~ssList(W)) | ![X: $i] : ((~(X = W)) | (~(U = W)) | (~(V = X)) | (neq(U, nil) & frontsegP(V, U)) | (~neq(V, nil)) | (~ssList(X)))))))),
% 0.20/0.47      inference(rewrite,[status(thm)],[])).
% 0.20/0.47  tff(11,plain,
% 0.20/0.47      ((~![U: $i] : (ssList(U) => ![V: $i] : (ssList(V) => ![W: $i] : (ssList(W) => ![X: $i] : (ssList(X) => (((((~(V = X)) | (~(U = W))) | (~(X = W))) | (~neq(V, nil))) | (neq(U, nil) & frontsegP(V, U)))))))) <=> (~![U: $i] : ((~ssList(U)) | ![V: $i] : ((~ssList(V)) | ![W: $i] : ((~ssList(W)) | ![X: $i] : ((~(X = W)) | (~(U = W)) | (~(V = X)) | (neq(U, nil) & frontsegP(V, U)) | (~neq(V, nil)) | (~ssList(X)))))))),
% 0.20/0.47      inference(rewrite,[status(thm)],[])).
% 0.20/0.47  tff(12,axiom,(~![U: $i] : (ssList(U) => ![V: $i] : (ssList(V) => ![W: $i] : (ssList(W) => ![X: $i] : (ssList(X) => (((((~(V = X)) | (~(U = W))) | (~(X = W))) | (~neq(V, nil))) | (neq(U, nil) & frontsegP(V, U)))))))), file('/export/starexec/sandbox/benchmark/theBenchmark.p','co1')).
% 0.20/0.47  tff(13,plain,
% 0.20/0.47      (~![U: $i] : ((~ssList(U)) | ![V: $i] : ((~ssList(V)) | ![W: $i] : ((~ssList(W)) | ![X: $i] : ((~(X = W)) | (~(U = W)) | (~(V = X)) | (neq(U, nil) & frontsegP(V, U)) | (~neq(V, nil)) | (~ssList(X))))))),
% 0.20/0.47      inference(modus_ponens,[status(thm)],[12, 11])).
% 0.20/0.47  tff(14,plain,
% 0.20/0.47      (~![U: $i] : ((~ssList(U)) | ![V: $i] : ((~ssList(V)) | ![W: $i] : ((~ssList(W)) | ![X: $i] : ((~(X = W)) | (~(U = W)) | (~(V = X)) | (neq(U, nil) & frontsegP(V, U)) | (~neq(V, nil)) | (~ssList(X))))))),
% 0.20/0.47      inference(modus_ponens,[status(thm)],[13, 10])).
% 0.20/0.47  tff(15,plain,
% 0.20/0.47      (~![U: $i] : ((~ssList(U)) | ![V: $i] : ((~ssList(V)) | ![W: $i] : ((~ssList(W)) | ![X: $i] : ((~(X = W)) | (~(U = W)) | (~(V = X)) | (neq(U, nil) & frontsegP(V, U)) | (~neq(V, nil)) | (~ssList(X))))))),
% 0.20/0.47      inference(modus_ponens,[status(thm)],[14, 10])).
% 0.20/0.47  tff(16,plain,
% 0.20/0.47      (~![U: $i] : ((~ssList(U)) | ![V: $i] : ((~ssList(V)) | ![W: $i] : ((~ssList(W)) | ![X: $i] : ((~(X = W)) | (~(U = W)) | (~(V = X)) | (neq(U, nil) & frontsegP(V, U)) | (~neq(V, nil)) | (~ssList(X))))))),
% 0.20/0.47      inference(modus_ponens,[status(thm)],[15, 10])).
% 0.20/0.47  tff(17,plain,
% 0.20/0.47      (~![U: $i] : ((~ssList(U)) | ![V: $i] : ((~ssList(V)) | ![W: $i] : ((~ssList(W)) | ![X: $i] : ((~(X = W)) | (~(U = W)) | (~(V = X)) | (neq(U, nil) & frontsegP(V, U)) | (~neq(V, nil)) | (~ssList(X))))))),
% 0.20/0.47      inference(modus_ponens,[status(thm)],[16, 10])).
% 0.20/0.47  tff(18,plain,
% 0.20/0.47      (~![U: $i] : ((~ssList(U)) | ![V: $i] : ((~ssList(V)) | ![W: $i] : ((~ssList(W)) | ![X: $i] : ((~(X = W)) | (~(U = W)) | (~(V = X)) | (neq(U, nil) & frontsegP(V, U)) | (~neq(V, nil)) | (~ssList(X))))))),
% 0.20/0.47      inference(modus_ponens,[status(thm)],[17, 10])).
% 0.20/0.47  tff(19,plain,
% 0.20/0.47      (~![U: $i] : ((~ssList(U)) | ![V: $i] : ((~ssList(V)) | ![W: $i] : ((~ssList(W)) | ![X: $i] : ((~(X = W)) | (~(U = W)) | (~(V = X)) | (neq(U, nil) & frontsegP(V, U)) | (~neq(V, nil)) | (~ssList(X))))))),
% 0.20/0.47      inference(modus_ponens,[status(thm)],[18, 10])).
% 0.20/0.47  tff(20,plain,
% 0.20/0.47      (ssList(U!47) & ssList(V!48) & ssList(W!49) & (~((neq(U!47, nil) & frontsegP(V!48, U!47)) | (~neq(V!48, nil)) | (~(U!47 = W!49)) | (~(X!50 = W!49)) | (~(V!48 = X!50)) | (~ssList(X!50))))),
% 0.20/0.47      inference(modus_ponens,[status(thm)],[19, 9])).
% 0.20/0.47  tff(21,plain,
% 0.20/0.47      (~((neq(U!47, nil) & frontsegP(V!48, U!47)) | (~neq(V!48, nil)) | (~(U!47 = W!49)) | (~(X!50 = W!49)) | (~(V!48 = X!50)) | (~ssList(X!50)))),
% 0.20/0.47      inference(and_elim,[status(thm)],[20])).
% 0.20/0.47  tff(22,plain,
% 0.20/0.47      (U!47 = W!49),
% 0.20/0.47      inference(or_elim,[status(thm)],[21])).
% 0.20/0.47  tff(23,plain,
% 0.20/0.47      (W!49 = U!47),
% 0.20/0.47      inference(symmetry,[status(thm)],[22])).
% 0.20/0.47  tff(24,plain,
% 0.20/0.47      (V!48 = X!50),
% 0.20/0.47      inference(or_elim,[status(thm)],[21])).
% 0.20/0.47  tff(25,plain,
% 0.20/0.47      (X!50 = V!48),
% 0.20/0.47      inference(symmetry,[status(thm)],[24])).
% 0.20/0.47  tff(26,plain,
% 0.20/0.47      (X!50 = W!49),
% 0.20/0.47      inference(or_elim,[status(thm)],[21])).
% 0.20/0.47  tff(27,plain,
% 0.20/0.47      (W!49 = X!50),
% 0.20/0.47      inference(symmetry,[status(thm)],[26])).
% 0.20/0.47  tff(28,plain,
% 0.20/0.47      (W!49 = V!48),
% 0.20/0.47      inference(transitivity,[status(thm)],[27, 25])).
% 0.20/0.47  tff(29,plain,
% 0.20/0.47      (frontsegP(W!49, W!49) <=> frontsegP(V!48, U!47)),
% 0.20/0.47      inference(monotonicity,[status(thm)],[28, 23])).
% 0.20/0.47  tff(30,plain,
% 0.20/0.47      (frontsegP(V!48, U!47) <=> frontsegP(W!49, W!49)),
% 0.20/0.47      inference(symmetry,[status(thm)],[29])).
% 0.20/0.47  tff(31,plain,
% 0.20/0.47      ((~frontsegP(V!48, U!47)) <=> (~frontsegP(W!49, W!49))),
% 0.20/0.48      inference(monotonicity,[status(thm)],[30])).
% 0.20/0.48  tff(32,plain,
% 0.20/0.48      (V!48 = U!47),
% 0.20/0.48      inference(transitivity,[status(thm)],[24, 26, 23])).
% 0.20/0.48  tff(33,plain,
% 0.20/0.48      (neq(V!48, nil) <=> neq(U!47, nil)),
% 0.20/0.48      inference(monotonicity,[status(thm)],[32])).
% 0.20/0.48  tff(34,plain,
% 0.20/0.48      (neq(V!48, nil)),
% 0.20/0.48      inference(or_elim,[status(thm)],[21])).
% 0.20/0.48  tff(35,plain,
% 0.20/0.48      (neq(U!47, nil)),
% 0.20/0.48      inference(modus_ponens,[status(thm)],[34, 33])).
% 0.20/0.48  tff(36,plain,
% 0.20/0.48      ((~(~((~neq(U!47, nil)) | (~frontsegP(V!48, U!47))))) <=> ((~neq(U!47, nil)) | (~frontsegP(V!48, U!47)))),
% 0.20/0.48      inference(rewrite,[status(thm)],[])).
% 0.20/0.48  tff(37,plain,
% 0.20/0.48      ((neq(U!47, nil) & frontsegP(V!48, U!47)) <=> (~((~neq(U!47, nil)) | (~frontsegP(V!48, U!47))))),
% 0.20/0.48      inference(rewrite,[status(thm)],[])).
% 0.20/0.48  tff(38,plain,
% 0.20/0.48      ((~(neq(U!47, nil) & frontsegP(V!48, U!47))) <=> (~(~((~neq(U!47, nil)) | (~frontsegP(V!48, U!47)))))),
% 0.20/0.48      inference(monotonicity,[status(thm)],[37])).
% 0.20/0.48  tff(39,plain,
% 0.20/0.48      ((~(neq(U!47, nil) & frontsegP(V!48, U!47))) <=> ((~neq(U!47, nil)) | (~frontsegP(V!48, U!47)))),
% 0.20/0.48      inference(transitivity,[status(thm)],[38, 36])).
% 0.20/0.48  tff(40,plain,
% 0.20/0.48      (~(neq(U!47, nil) & frontsegP(V!48, U!47))),
% 0.20/0.48      inference(or_elim,[status(thm)],[21])).
% 0.20/0.48  tff(41,plain,
% 0.20/0.48      ((~neq(U!47, nil)) | (~frontsegP(V!48, U!47))),
% 0.20/0.48      inference(modus_ponens,[status(thm)],[40, 39])).
% 0.20/0.48  tff(42,plain,
% 0.20/0.48      (~frontsegP(V!48, U!47)),
% 0.20/0.48      inference(unit_resolution,[status(thm)],[41, 35])).
% 0.20/0.48  tff(43,plain,
% 0.20/0.48      (~frontsegP(W!49, W!49)),
% 0.20/0.48      inference(modus_ponens,[status(thm)],[42, 31])).
% 0.20/0.48  tff(44,plain,
% 0.20/0.48      (ssList(W!49)),
% 0.20/0.48      inference(and_elim,[status(thm)],[20])).
% 0.20/0.48  tff(45,plain,
% 0.20/0.48      (^[U: $i] : refl(((~ssList(U)) | frontsegP(U, U)) <=> ((~ssList(U)) | frontsegP(U, U)))),
% 0.20/0.48      inference(bind,[status(th)],[])).
% 0.20/0.48  tff(46,plain,
% 0.20/0.48      (![U: $i] : ((~ssList(U)) | frontsegP(U, U)) <=> ![U: $i] : ((~ssList(U)) | frontsegP(U, U))),
% 0.20/0.48      inference(quant_intro,[status(thm)],[45])).
% 0.20/0.48  tff(47,plain,
% 0.20/0.48      (![U: $i] : ((~ssList(U)) | frontsegP(U, U)) <=> ![U: $i] : ((~ssList(U)) | frontsegP(U, U))),
% 0.20/0.48      inference(rewrite,[status(thm)],[])).
% 0.20/0.48  tff(48,plain,
% 0.20/0.48      (^[U: $i] : rewrite((ssList(U) => frontsegP(U, U)) <=> ((~ssList(U)) | frontsegP(U, U)))),
% 0.20/0.48      inference(bind,[status(th)],[])).
% 0.20/0.48  tff(49,plain,
% 0.20/0.48      (![U: $i] : (ssList(U) => frontsegP(U, U)) <=> ![U: $i] : ((~ssList(U)) | frontsegP(U, U))),
% 0.20/0.48      inference(quant_intro,[status(thm)],[48])).
% 0.20/0.48  tff(50,axiom,(![U: $i] : (ssList(U) => frontsegP(U, U))), file('/export/starexec/sandbox/benchmark/Axioms/SWC001+0.ax','ax42')).
% 0.20/0.48  tff(51,plain,
% 0.20/0.48      (![U: $i] : ((~ssList(U)) | frontsegP(U, U))),
% 0.20/0.48      inference(modus_ponens,[status(thm)],[50, 49])).
% 0.20/0.48  tff(52,plain,
% 0.20/0.48      (![U: $i] : ((~ssList(U)) | frontsegP(U, U))),
% 0.20/0.48      inference(modus_ponens,[status(thm)],[51, 47])).
% 0.20/0.48  tff(53,plain,(
% 0.20/0.48      ![U: $i] : ((~ssList(U)) | frontsegP(U, U))),
% 0.20/0.48      inference(skolemize,[status(sab)],[52])).
% 0.20/0.48  tff(54,plain,
% 0.20/0.48      (![U: $i] : ((~ssList(U)) | frontsegP(U, U))),
% 0.20/0.48      inference(modus_ponens,[status(thm)],[53, 46])).
% 0.20/0.48  tff(55,plain,
% 0.20/0.48      (((~![U: $i] : ((~ssList(U)) | frontsegP(U, U))) | ((~ssList(W!49)) | frontsegP(W!49, W!49))) <=> ((~![U: $i] : ((~ssList(U)) | frontsegP(U, U))) | (~ssList(W!49)) | frontsegP(W!49, W!49))),
% 0.20/0.48      inference(rewrite,[status(thm)],[])).
% 0.20/0.48  tff(56,plain,
% 0.20/0.48      ((~![U: $i] : ((~ssList(U)) | frontsegP(U, U))) | ((~ssList(W!49)) | frontsegP(W!49, W!49))),
% 0.20/0.48      inference(quant_inst,[status(thm)],[])).
% 0.20/0.48  tff(57,plain,
% 0.20/0.48      ((~![U: $i] : ((~ssList(U)) | frontsegP(U, U))) | (~ssList(W!49)) | frontsegP(W!49, W!49)),
% 0.20/0.48      inference(modus_ponens,[status(thm)],[56, 55])).
% 0.20/0.48  tff(58,plain,
% 0.20/0.48      (frontsegP(W!49, W!49)),
% 0.20/0.48      inference(unit_resolution,[status(thm)],[57, 54, 44])).
% 0.20/0.48  tff(59,plain,
% 0.20/0.48      ($false),
% 0.20/0.48      inference(unit_resolution,[status(thm)],[58, 43])).
% 0.20/0.48  % SZS output end Proof
%------------------------------------------------------------------------------