{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:EUV4ZBJBKI3TVA73SGO5ULPCD3","short_pith_number":"pith:EUV4ZBJB","canonical_record":{"source":{"id":"1611.07803","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2016-11-23T14:12:15Z","cross_cats_sorted":[],"title_canon_sha256":"a2de2ea6a32b54734545ae12a60eb3b4d546a9af7ef2acf8e2dd0d6b02f21b45","abstract_canon_sha256":"14e8ac736f81f2ff186932b03ea8dfb6611ef84d56dd3d1be4d5555f4597b999"},"schema_version":"1.0"},"canonical_sha256":"252bcc852152373a83fb919dda2de21ee5a817266f210891812dff2b614dbb8a","source":{"kind":"arxiv","id":"1611.07803","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.07803","created_at":"2026-05-18T00:01:53Z"},{"alias_kind":"arxiv_version","alias_value":"1611.07803v3","created_at":"2026-05-18T00:01:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.07803","created_at":"2026-05-18T00:01:53Z"},{"alias_kind":"pith_short_12","alias_value":"EUV4ZBJBKI3T","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"EUV4ZBJBKI3TVA73","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"EUV4ZBJB","created_at":"2026-05-18T12:30:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:EUV4ZBJBKI3TVA73SGO5ULPCD3","target":"record","payload":{"canonical_record":{"source":{"id":"1611.07803","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2016-11-23T14:12:15Z","cross_cats_sorted":[],"title_canon_sha256":"a2de2ea6a32b54734545ae12a60eb3b4d546a9af7ef2acf8e2dd0d6b02f21b45","abstract_canon_sha256":"14e8ac736f81f2ff186932b03ea8dfb6611ef84d56dd3d1be4d5555f4597b999"},"schema_version":"1.0"},"canonical_sha256":"252bcc852152373a83fb919dda2de21ee5a817266f210891812dff2b614dbb8a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:53.709459Z","signature_b64":"bDy+pjebd3m00VwKD8NR1v3YcE2CEJl8zRzGfucFORJ7Xt1XT3gGOxh0/xWwYodlo+utrOghloXJSa+SJSfoBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"252bcc852152373a83fb919dda2de21ee5a817266f210891812dff2b614dbb8a","last_reissued_at":"2026-05-18T00:01:53.708970Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:53.708970Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.07803","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:01:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r+xvgXOdA/z8JmQW8Yi3AcAzveoA+HGsE0tSftUBymVIFoELD20bdpO7S+Q0+/hXY/gixCP30pgG9YaMgWcDDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T15:42:11.242463Z"},"content_sha256":"baf13c03978848b8263824db299b050129766b48c29875049ca9f200f41d6fde","schema_version":"1.0","event_id":"sha256:baf13c03978848b8263824db299b050129766b48c29875049ca9f200f41d6fde"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:EUV4ZBJBKI3TVA73SGO5ULPCD3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Interpolation-Based GR(1) Assumptions Refinement","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.LO","authors_text":"Dalal Alrajeh, Davide G. Cavezza","submitted_at":"2016-11-23T14:12:15Z","abstract_excerpt":"This paper considers the problem of assumptions refinement in the context of unrealizable specifications for reactive systems. We propose a new counterstrategy-guided synthesis approach for GR(1) specifications based on Craig's interpolants. Our interpolation-based method identifies causes for unrealizability and computes assumptions that directly target unrealizable cores, without the need for user input. Thereby, we discuss how this property reduces the maximum number of steps needed to converge to realizability compared with other techniques. We describe properties of interpolants that yiel"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.07803","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:01:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wd26HUxDFF7jIPCas6TsDCnoIQDvu7NaOvFWQ6TSUn7CB2vM/SpEDYCG9H5ovMKf3HSmXSFodSM6d5aAxZ76CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T15:42:11.243146Z"},"content_sha256":"3bf72f6e33455781727ced191487c50e9e527cdcc777dc95d3e25157c69d0ff3","schema_version":"1.0","event_id":"sha256:3bf72f6e33455781727ced191487c50e9e527cdcc777dc95d3e25157c69d0ff3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EUV4ZBJBKI3TVA73SGO5ULPCD3/bundle.json","state_url":"https://pith.science/pith/EUV4ZBJBKI3TVA73SGO5ULPCD3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EUV4ZBJBKI3TVA73SGO5ULPCD3/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-29T15:42:11Z","links":{"resolver":"https://pith.science/pith/EUV4ZBJBKI3TVA73SGO5ULPCD3","bundle":"https://pith.science/pith/EUV4ZBJBKI3TVA73SGO5ULPCD3/bundle.json","state":"https://pith.science/pith/EUV4ZBJBKI3TVA73SGO5ULPCD3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EUV4ZBJBKI3TVA73SGO5ULPCD3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:EUV4ZBJBKI3TVA73SGO5ULPCD3","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"14e8ac736f81f2ff186932b03ea8dfb6611ef84d56dd3d1be4d5555f4597b999","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2016-11-23T14:12:15Z","title_canon_sha256":"a2de2ea6a32b54734545ae12a60eb3b4d546a9af7ef2acf8e2dd0d6b02f21b45"},"schema_version":"1.0","source":{"id":"1611.07803","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.07803","created_at":"2026-05-18T00:01:53Z"},{"alias_kind":"arxiv_version","alias_value":"1611.07803v3","created_at":"2026-05-18T00:01:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.07803","created_at":"2026-05-18T00:01:53Z"},{"alias_kind":"pith_short_12","alias_value":"EUV4ZBJBKI3T","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"EUV4ZBJBKI3TVA73","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"EUV4ZBJB","created_at":"2026-05-18T12:30:15Z"}],"graph_snapshots":[{"event_id":"sha256:3bf72f6e33455781727ced191487c50e9e527cdcc777dc95d3e25157c69d0ff3","target":"graph","created_at":"2026-05-18T00:01:53Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"This paper considers the problem of assumptions refinement in the context of unrealizable specifications for reactive systems. We propose a new counterstrategy-guided synthesis approach for GR(1) specifications based on Craig's interpolants. Our interpolation-based method identifies causes for unrealizability and computes assumptions that directly target unrealizable cores, without the need for user input. Thereby, we discuss how this property reduces the maximum number of steps needed to converge to realizability compared with other techniques. We describe properties of interpolants that yiel","authors_text":"Dalal Alrajeh, Davide G. Cavezza","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2016-11-23T14:12:15Z","title":"Interpolation-Based GR(1) Assumptions Refinement"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.07803","kind":"arxiv","version":3},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:baf13c03978848b8263824db299b050129766b48c29875049ca9f200f41d6fde","target":"record","created_at":"2026-05-18T00:01:53Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"14e8ac736f81f2ff186932b03ea8dfb6611ef84d56dd3d1be4d5555f4597b999","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2016-11-23T14:12:15Z","title_canon_sha256":"a2de2ea6a32b54734545ae12a60eb3b4d546a9af7ef2acf8e2dd0d6b02f21b45"},"schema_version":"1.0","source":{"id":"1611.07803","kind":"arxiv","version":3}},"canonical_sha256":"252bcc852152373a83fb919dda2de21ee5a817266f210891812dff2b614dbb8a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"252bcc852152373a83fb919dda2de21ee5a817266f210891812dff2b614dbb8a","first_computed_at":"2026-05-18T00:01:53.708970Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:53.708970Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bDy+pjebd3m00VwKD8NR1v3YcE2CEJl8zRzGfucFORJ7Xt1XT3gGOxh0/xWwYodlo+utrOghloXJSa+SJSfoBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:53.709459Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.07803","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:baf13c03978848b8263824db299b050129766b48c29875049ca9f200f41d6fde","sha256:3bf72f6e33455781727ced191487c50e9e527cdcc777dc95d3e25157c69d0ff3"],"state_sha256":"4ca4b2a259a75af63e93203cc11f1b045df79c78cf3449008fc91cb9f0d8ac5a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3CK0b43Ybe9fSlXbrwThAPoqJ0/OqkXddb3k+ToBPnlqCm/s9g6E3NH37iv0Hxb388mqnWUkbFWuImQYruOfAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T15:42:11.247024Z","bundle_sha256":"6a5ea30263f64312dbf47cc76b0a95f84f8a9faca15efb2cdde015db7ad4da28"}}