%------------------------------------------------------------------------------ % File : Lash---1.13 % Problem : SYO540^1 : TPTP v9.2.0. Released v5.2.0. % Transfm : none % Format : tptp:raw % Command : lash -P picomus -M modes -p tstp -t %d %s % Computer : n011.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 Oct 9 03:23:50 PM UTC 2025 % Result : Theorem 0.12s 0.41s % Output : Proof 0.12s % Verified : % SZS Type : - % Comments : %------------------------------------------------------------------------------ %----WARNING: Could not form TPTP format derivation %------------------------------------------------------------------------------ %----ORIGINAL SYSTEM OUTPUT % 0.12/0.12 % Problem : SYO540^1 : TPTP v9.2.0. Released v5.2.0. % 0.12/0.13 % Command : lash -P picomus -M modes -p tstp -t %d %s % 0.12/0.34 % Computer : n011.cluster.edu % 0.12/0.34 % Model : x86_64 x86_64 % 0.12/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz % 0.12/0.34 % Memory : 8042.1875MB % 0.12/0.34 % OS : Linux 3.10.0-693.el7.x86_64 % 0.12/0.34 % CPULimit : 300 % 0.12/0.34 % WCLimit : 300 % 0.12/0.34 % DateTime : Thu Oct 9 00:34:38 EDT 2025 % 0.12/0.34 % CPUTime : % 0.12/0.41 % SZS status Theorem % 0.12/0.41 % Mode: cade22grackle2xfee4 % 0.12/0.41 % Steps: 12 % 0.12/0.41 % SZS output start Proof % 0.12/0.41 thf(ty_eigen__0, type, eigen__0 : $o). % 0.12/0.41 thf(ty_eps, type, eps : (($i>$o)>$i)). % 0.12/0.41 thf(ty_eigen__1, type, eigen__1 : $i). % 0.12/0.41 thf(sP1,plain,sP1 <=> (![X1:$i]:(~(((eigen__0 => (~((X1 = eigen__1)))) => (~(((~(eigen__0)) => (~((X1 = eigen__1)))))))))),introduced(definition,[new_symbols(definition,[sP1])])). % 0.12/0.41 thf(sP2,plain,sP2 <=> $false,introduced(definition,[new_symbols(definition,[sP2])])). % 0.12/0.41 thf(sP3,plain,sP3 <=> ((~(eigen__0)) => (~(((eps @ (^[X1:$i]:((eigen__0 => (~((X1 = eigen__1)))) => (~(((~(eigen__0)) => (~((X1 = eigen__1))))))))) = eigen__1)))),introduced(definition,[new_symbols(definition,[sP3])])). % 0.12/0.41 thf(sP4,plain,sP4 <=> ((eigen__0 => (~(((eps @ (^[X1:$i]:((eigen__0 => (~((X1 = eigen__1)))) => (~(((~(eigen__0)) => (~((X1 = eigen__1))))))))) = eigen__1)))) => (~(sP3))),introduced(definition,[new_symbols(definition,[sP4])])). % 0.12/0.41 thf(sP5,plain,sP5 <=> ((eps @ (^[X1:$i]:((eigen__0 => (~((X1 = eigen__1)))) => (~(((~(eigen__0)) => (~((X1 = eigen__1))))))))) = eigen__1),introduced(definition,[new_symbols(definition,[sP5])])). % 0.12/0.41 thf(sP6,plain,sP6 <=> (eigen__0 => (~(sP5))),introduced(definition,[new_symbols(definition,[sP6])])). % 0.12/0.41 thf(def_if,definition,(if = (^[X1:$o]:(^[X2:$i]:(^[X3:$i]:(eps @ (^[X4:$i]:((X1 & (X4 = X2)) | (((~) @ X1) & (X4 = X3)))))))))). % 0.12/0.41 thf(conj,conjecture,(![X1:$o]:(![X2:$i]:((eps @ (^[X3:$i]:((X1 => (~((X3 = X2)))) => (~(((~(X1)) => (~((X3 = X2))))))))) = X2)))). % 0.12/0.41 thf(h0,negated_conjecture,(~((![X1:$o]:(![X2:$i]:((eps @ (^[X3:$i]:((X1 => (~((X3 = X2)))) => (~(((~(X1)) => (~((X3 = X2))))))))) = X2))))),inference(assume_negation,[status(cth)],[conj])). % 0.12/0.41 thf(h1,assumption,(~((![X1:$i]:((eps @ (^[X2:$i]:((eigen__0 => (~((X2 = X1)))) => (~(((~(eigen__0)) => (~((X2 = X1))))))))) = X1)))),introduced(assumption,[])). % 0.12/0.41 thf(h2,assumption,(~(sP5)),introduced(assumption,[])). % 0.12/0.41 thf(1,plain,~(sP2),inference(prop_rule,[status(thm)],[])). % 0.12/0.41 thf(2,plain,(~(sP1) | sP2),inference(all_rule,[status(thm)],[])). % 0.12/0.41 thf(3,plain,(sP3 | sP5),inference(prop_rule,[status(thm)],[])). % 0.12/0.41 thf(4,plain,(sP6 | sP5),inference(prop_rule,[status(thm)],[])). % 0.12/0.41 thf(5,plain,((~(sP4) | ~(sP6)) | ~(sP3)),inference(prop_rule,[status(thm)],[])). % 0.12/0.41 thf(choiceax,axiom,(![X1:$i>$o]:((~((![X2:$i]:(~((X1 @ X2)))))) => (X1 @ (eps @ X1))))). % 0.12/0.41 thf(6,plain,(![X1:$i>$o]:((~((![X2:$i]:(~((X1 @ X2)))))) => (X1 @ (eps @ X1)))),inference(preprocess,[status(thm)],[6]). % 0.12/0.41 thf(7,plain,(sP4 | sP1),inference(choice_rule,[status(thm)],[6])). % 0.12/0.41 thf(8,plain,$false,inference(prop_unsat,[status(thm),assumptions([h2,h1,h0])],[1,2,3,4,5,7,h2])). % 0.12/0.41 thf(9,plain,$false,inference(tab_negall,[status(thm),assumptions([h1,h0]),tab_negall(discharge,[h2]),tab_negall(eigenvar,eigen__1)],[h1,8,h2])). % 0.12/0.41 thf(10,plain,$false,inference(tab_negall,[status(thm),assumptions([h0]),tab_negall(discharge,[h1]),tab_negall(eigenvar,eigen__0)],[h0,9,h1])). % 0.12/0.41 thf(0,theorem,(![X1:$o]:(![X2:$i]:((eps @ (^[X3:$i]:((X1 => (~((X3 = X2)))) => (~(((~(X1)) => (~((X3 = X2))))))))) = X2))),inference(contra,[status(thm),contra(discharge,[h0])],[10,h0])). % 0.12/0.41 % SZS output end Proof %------------------------------------------------------------------------------