Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								9e7cef7d6b
								
							
						 | 
						
							
							
								
								working on product sets
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-26 16:45:45 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								3ae10abf04
								
							
						 | 
						
							
							
								
								remove extra qualifier
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-25 13:15:29 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								ff501986f1
								
							
						 | 
						
							
							
								
								remove extra qualifier
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-25 13:15:01 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								2dcbf192cc
								
							
						 | 
						
							
							
								
								remove extra qualifier
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-25 13:14:20 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								4d589de970
								
							
						 | 
						
							
							
								
								remove extra qualifier
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-25 13:13:43 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								20728535e8
								
							
						 | 
						
							
							
								
								remove extra qualifier
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-25 13:12:49 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								15734398d8
								
							
						 | 
						
							
							
								
								Merge branch 'opt' of https://git01.codeplex.com/z3 into opt
							
							
							
							
							
						 | 
						
							2014-08-25 12:11:49 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								8938de2ba2
								
							
						 | 
						
							
							
								
								fix build error reported by Ari
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-25 12:11:34 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								b82a68f4d4
								
							
						 | 
						
							
							
								
								fix bug in sls
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-24 19:53:55 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								b596828d23
								
							
						 | 
						
							
							
								
								add DDNF based engine
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-21 18:04:46 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								a47f3df703
								
							
						 | 
						
							
							
								
								fix bug in unsat core extraction in sat solver
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-18 23:43:51 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								1c56d6ee95
								
							
						 | 
						
							
							
								
								align lengths of weights and soft constraints
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-18 01:17:26 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								f748a03ac7
								
							
						 | 
						
							
							
								
								opt
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-16 22:31:54 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								33f74b9c9f
								
							
						 | 
						
							
							
								
								sls
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-15 22:49:21 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								ddb9e6e8d4
								
							
						 | 
						
							
							
								
								fix flipper
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-15 18:30:06 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								be1cceba34
								
							
						 | 
						
							
							
								
								fix scope and mus with user-scopes
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-15 11:29:08 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								ee1a1b1135
								
							
						 | 
						
							
							
								
								refactor sat/sls interface. Remove wpm2 and bvsls dependencies
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-15 10:40:44 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								180b0d4ec9
								
							
						 | 
						
							
							
								
								add sls
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-12 19:24:31 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								1652c16163
								
							
						 | 
						
							
							
								
								add missing code
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-10 22:13:55 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								39d90f914d
								
							
						 | 
						
							
							
								
								NA
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-10 21:27:07 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								e832bdd257
								
							
						 | 
						
							
							
								
								fix bug in blocked clause elimination that was enabled for external variables, fix other bugs in maxres
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-10 21:23:05 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								317e76a11b
								
							
						 | 
						
							
							
								
								mss and mss-mus-maxres
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-03 20:23:10 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								d429e72e92
								
							
						 | 
						
							
							
								
								v2 of dual maxres engine
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-03 18:50:21 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								622d8b5cd1
								
							
						 | 
						
							
							
								
								moving to maxres consolidation
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-03 00:18:09 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								6a4c08c7cb
								
							
						 | 
						
							
							
								
								moving to maxres consolidation
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-03 00:17:55 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								a41b1d34ce
								
							
						 | 
						
							
							
								
								moving dual solver to maxres
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-03 00:08:57 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								5e026b7897
								
							
						 | 
						
							
							
								
								mss and maxres tuning
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-02 23:34:43 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								9681dc12b1
								
							
						 | 
						
							
							
								
								tuning auxiliary literals and clauses
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-02 14:25:04 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								8814ba0629
								
							
						 | 
						
							
							
								
								testing maxres with sat core
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-02 12:27:57 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								b928734348
								
							
						 | 
						
							
							
								
								perf improvements, mus
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-08-01 16:11:52 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								6438c477b3
								
							
						 | 
						
							
							
								
								working on maxres
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-07-31 23:35:41 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								39414d8b8d
								
							
						 | 
						
							
							
								
								testing inc_sat
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-07-31 22:29:47 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								365f05b41a
								
							
						 | 
						
							
							
								
								testing inc-sat solver
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-07-30 17:49:51 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								bfc0af7820
								
							
						 | 
						
							
							
								
								testing inc-sat solver
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-07-30 16:35:46 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								e8056e066d
								
							
						 | 
						
							
							
								
								enable bvsat, multi disjoint cores for dual-maxres
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-07-30 12:57:30 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								3fefed69b7
								
							
						 | 
						
							
							
								
								incremental sat
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-07-30 11:12:15 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								4f0de9a0cf
								
							
						 | 
						
							
							
								
								implement user scopes for sat solver
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-07-30 09:27:03 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								2b1af8fd50
								
							
						 | 
						
							
							
								
								updated sat solver for cores
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-07-29 14:38:17 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								4ab27eff78
								
							
						 | 
						
							
							
								
								refactor weighted-maxsat into separate files
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-07-28 08:31:57 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								9f1b2ccfc4
								
							
						 | 
						
							
							
								
								restructure maxsmt solvers, flatten weighted/non-weighted versions, fix bugs and simplify mus/max-res
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-07-23 23:53:03 +02:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								5e9bf2ef53
								
							
						 | 
						
							
							
								
								maxres revised to handle weighted constraints
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-07-22 15:42:08 +02:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								bf35a62da7
								
							
						 | 
						
							
							
								
								adding mus extraction
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-07-21 23:28:19 +02:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								582dbe509c
								
							
						 | 
						
							
							
								
								first implementation of maxres
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-07-21 22:24:34 +02:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								53f82e3239
								
							
						 | 
						
							
							
								
								update model during Lex
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-07-06 17:33:54 +02:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								519c9dba25
								
							
						 | 
						
							
							
								
								update hitting set implementation
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-06-23 11:28:38 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								04407938be
								
							
						 | 
						
							
							
								
								custom HS solver
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-06-18 17:31:00 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								d7d85aa18a
								
							
						 | 
						
							
							
								
								working on HS
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-06-17 22:32:32 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								84d971b69a
								
							
						 | 
						
							
							
								
								working on HS
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-06-17 17:05:05 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								b64b12cae3
								
							
						 | 
						
							
							
								
								working on HS
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-06-17 12:54:50 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 | 
					
				
					
						
							
								
								
									 
									Nikolaj Bjorner
								
							 
						 | 
						
							
							
							
							
								
							
							
								bad03822b4
								
							
						 | 
						
							
							
								
								working on HS
							
							
							
							
							
							
							
							Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> 
							
						 | 
						
							2014-06-16 16:55:48 -07:00 | 
						
						
							
							
							
							
								
							
							
							
								
							
							
						 |