%------------------------------------------------------------------------------ % File : Otter---3.3 % Problem : LAT237-1 : TPTP v8.1.0. Released v3.1.0. % Transfm : none % Format : tptp:raw % Command : otter-tptp-script %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 : Wed Jul 27 13:02:10 EDT 2022 % Result : Unknown 18.37s 18.56s % Output : None % Verified : % SZS Type : - % Comments : %------------------------------------------------------------------------------ %----No solution output by system %------------------------------------------------------------------------------ %----ORIGINAL SYSTEM OUTPUT % 0.10/0.12 % Problem : LAT237-1 : TPTP v8.1.0. Released v3.1.0. % 0.10/0.12 % Command : otter-tptp-script %s % 0.12/0.33 % Computer : n029.cluster.edu % 0.12/0.33 % Model : x86_64 x86_64 % 0.12/0.33 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz % 0.12/0.33 % Memory : 8042.1875MB % 0.12/0.33 % OS : Linux 3.10.0-693.el7.x86_64 % 0.12/0.33 % CPULimit : 300 % 0.12/0.33 % WCLimit : 300 % 0.12/0.33 % DateTime : Wed Jul 27 08:20:59 EDT 2022 % 0.12/0.34 % CPUTime : % 1.73/1.91 ----- Otter 3.3f, August 2004 ----- % 1.73/1.91 The process was started by sandbox2 on n029.cluster.edu, % 1.73/1.91 Wed Jul 27 08:20:59 2022 % 1.73/1.91 The command was "./otter". The process ID is 18404. % 1.73/1.91 % 1.73/1.91 set(prolog_style_variables). % 1.73/1.91 set(auto). % 1.73/1.91 dependent: set(auto1). % 1.73/1.91 dependent: set(process_input). % 1.73/1.91 dependent: clear(print_kept). % 1.73/1.91 dependent: clear(print_new_demod). % 1.73/1.91 dependent: clear(print_back_demod). % 1.73/1.91 dependent: clear(print_back_sub). % 1.73/1.91 dependent: set(control_memory). % 1.73/1.91 dependent: assign(max_mem, 12000). % 1.73/1.91 dependent: assign(pick_given_ratio, 4). % 1.73/1.91 dependent: assign(stats_level, 1). % 1.73/1.91 dependent: assign(max_seconds, 10800). % 1.73/1.91 clear(print_given). % 1.73/1.91 % 1.73/1.91 list(usable). % 1.73/1.91 0 [] A=A. % 1.73/1.91 0 [] meet(X,X)=X. % 1.73/1.91 0 [] join(X,X)=X. % 1.73/1.91 0 [] meet(X,join(X,Y))=X. % 1.73/1.91 0 [] join(X,meet(X,Y))=X. % 1.73/1.91 0 [] meet(X,Y)=meet(Y,X). % 1.73/1.91 0 [] join(X,Y)=join(Y,X). % 1.73/1.91 0 [] meet(meet(X,Y),Z)=meet(X,meet(Y,Z)). % 1.73/1.91 0 [] join(join(X,Y),Z)=join(X,join(Y,Z)). % 1.73/1.91 0 [] join(X,complement(X))=one. % 1.73/1.91 0 [] meet(X,complement(X))=zero. % 1.73/1.91 0 [] meet(X,Y)!=zero|join(X,Y)!=one|complement(X)=Y. % 1.73/1.91 0 [] meet(X,join(Y,meet(Z,join(X,U))))=meet(X,join(Y,meet(Z,join(U,meet(Z,join(X,Y)))))). % 1.73/1.91 0 [] meet(b,a)=a. % 1.73/1.91 0 [] join(complement(b),complement(a))!=complement(a). % 1.73/1.91 end_of_list. % 1.73/1.91 % 1.73/1.91 SCAN INPUT: prop=0, horn=1, equality=1, symmetry=0, max_lits=3. % 1.73/1.91 % 1.73/1.91 This is a Horn set with equality. The strategy will be % 1.73/1.91 Knuth-Bendix and hyper_res, with positive clauses in % 1.73/1.91 sos and nonpositive clauses in usable. % 1.73/1.91 % 1.73/1.91 dependent: set(knuth_bendix). % 1.73/1.91 dependent: set(anl_eq). % 1.73/1.91 dependent: set(para_from). % 1.73/1.91 dependent: set(para_into). % 1.73/1.91 dependent: clear(para_from_right). % 1.73/1.91 dependent: clear(para_into_right). % 1.73/1.91 dependent: set(para_from_vars). % 1.73/1.91 dependent: set(eq_units_both_ways). % 1.73/1.91 dependent: set(dynamic_demod_all). % 1.73/1.91 dependent: set(dynamic_demod). % 1.73/1.91 dependent: set(order_eq). % 1.73/1.91 dependent: set(back_demod). % 1.73/1.91 dependent: set(lrpo). % 1.73/1.91 dependent: set(hyper_res). % 1.73/1.91 dependent: clear(order_hyper). % 1.73/1.91 % 1.73/1.91 ------------> process usable: % 1.73/1.91 ** KEPT (pick-wt=14): 1 [] meet(A,B)!=zero|join(A,B)!=one|complement(A)=B. % 1.73/1.91 ** KEPT (pick-wt=8): 2 [] join(complement(b),complement(a))!=complement(a). % 1.73/1.91 % 1.73/1.91 ------------> process sos: % 1.73/1.91 ** KEPT (pick-wt=3): 3 [] A=A. % 1.73/1.91 ** KEPT (pick-wt=5): 4 [] meet(A,A)=A. % 1.73/1.91 ---> New Demodulator: 5 [new_demod,4] meet(A,A)=A. % 1.73/1.91 ** KEPT (pick-wt=5): 6 [] join(A,A)=A. % 1.73/1.91 ---> New Demodulator: 7 [new_demod,6] join(A,A)=A. % 1.73/1.91 ** KEPT (pick-wt=7): 8 [] meet(A,join(A,B))=A. % 1.73/1.91 ---> New Demodulator: 9 [new_demod,8] meet(A,join(A,B))=A. % 1.73/1.91 ** KEPT (pick-wt=7): 10 [] join(A,meet(A,B))=A. % 1.73/1.91 ---> New Demodulator: 11 [new_demod,10] join(A,meet(A,B))=A. % 1.73/1.91 ** KEPT (pick-wt=7): 12 [] meet(A,B)=meet(B,A). % 1.73/1.91 ** KEPT (pick-wt=7): 13 [] join(A,B)=join(B,A). % 1.73/1.91 ** KEPT (pick-wt=11): 14 [] meet(meet(A,B),C)=meet(A,meet(B,C)). % 1.73/1.91 ---> New Demodulator: 15 [new_demod,14] meet(meet(A,B),C)=meet(A,meet(B,C)). % 1.73/1.91 ** KEPT (pick-wt=11): 16 [] join(join(A,B),C)=join(A,join(B,C)). % 1.73/1.91 ---> New Demodulator: 17 [new_demod,16] join(join(A,B),C)=join(A,join(B,C)). % 1.73/1.91 ** KEPT (pick-wt=6): 18 [] join(A,complement(A))=one. % 1.73/1.91 ---> New Demodulator: 19 [new_demod,18] join(A,complement(A))=one. % 1.73/1.91 ** KEPT (pick-wt=6): 20 [] meet(A,complement(A))=zero. % 1.73/1.91 ---> New Demodulator: 21 [new_demod,20] meet(A,complement(A))=zero. % 1.73/1.91 ** KEPT (pick-wt=23): 22 [] meet(A,join(B,meet(C,join(A,D))))=meet(A,join(B,meet(C,join(D,meet(C,join(A,B)))))). % 1.73/1.91 ** KEPT (pick-wt=5): 23 [] meet(b,a)=a. % 1.73/1.91 ---> New Demodulator: 24 [new_demod,23] meet(b,a)=a. % 1.73/1.91 Following clause subsumed by 3 during input processing: 0 [copy,3,flip.1] A=A. % 1.73/1.91 >>>> Starting back demodulation with 5. % 1.73/1.91 >>>> Starting back demodulation with 7. % 1.73/1.91 >>>> Starting back demodulation with 9. % 1.73/1.91 >>>> Starting back demodulation with 11. % 1.73/1.91 Following clause subsumed by 12 during input processing: 0 [copy,12,flip.1] meet(A,B)=meet(B,A). % 1.73/1.91 Following clause subsumed by 13 during input processing: 0 [copy,13,flip.1] join(A,B)=join(B,A). % 1.73/1.91 >>>> Starting back demodulation with 15. % 1.73/1.91 >>>> Starting back demodulation with 17. % 1.73/1.91 >>>> Starting back demodulation with 19. % 1.73/1.91 >>>> Starting back demodulation with 21. % 1.73/1.91 ** KEPT (pick-wt=23): 25 [copy,22,flip.1] meet(A,join(B,meet(C,join(D,meet(C,join(A,B))))))=meet(A,join(B,meet(C,join(A,D)))). % 1.73/1.91 >>>> Starting back demodulation with 24. % 18.37/18.55 Following clause subsumed by 22 during input processing: 0 [copy,25,flip.1] meet(A,join(B,meet(C,join(A,D))))=meet(A,join(B,meet(C,join(D,meet(C,join(A,B)))))). % 18.37/18.55 % 18.37/18.55 ======= end of input processing ======= % 18.37/18.55 % 18.37/18.55 =========== start of search =========== % 18.37/18.55 % 18.37/18.55 % 18.37/18.55 Resetting weight limit to 10. % 18.37/18.55 % 18.37/18.55 % 18.37/18.55 Resetting weight limit to 10. % 18.37/18.55 % 18.37/18.55 sos_size=760 % 18.37/18.55 % 18.37/18.55 Search stopped because sos empty. % 18.37/18.55 % 18.37/18.55 % 18.37/18.55 Search stopped because sos empty. % 18.37/18.55 % 18.37/18.55 ============ end of search ============ % 18.37/18.55 % 18.37/18.55 -------------- statistics ------------- % 18.37/18.55 clauses given 955 % 18.37/18.55 clauses generated 1435897 % 18.37/18.55 clauses kept 1077 % 18.37/18.55 clauses forward subsumed 776273 % 18.37/18.55 clauses back subsumed 112 % 18.37/18.55 Kbytes malloced 7812 % 18.37/18.55 % 18.37/18.55 ----------- times (seconds) ----------- % 18.37/18.55 user CPU time 16.64 (0 hr, 0 min, 16 sec) % 18.37/18.55 system CPU time 0.01 (0 hr, 0 min, 0 sec) % 18.37/18.55 wall-clock time 18 (0 hr, 0 min, 18 sec) % 18.37/18.55 % 18.37/18.55 Process 18404 finished Wed Jul 27 08:21:17 2022 % 18.37/18.55 Otter interrupted % 18.37/18.55 PROOF NOT FOUND %------------------------------------------------------------------------------