{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:POZB6VIAM5EVEQT6LSOGY6VOUD","short_pith_number":"pith:POZB6VIA","canonical_record":{"source":{"id":"1507.00980","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2015-07-03T18:23:13Z","cross_cats_sorted":["cs.PL"],"title_canon_sha256":"d2d58431a22e6db30f9eac3b32f5b731dcaf33367df1f983c9c7bde522e81d8a","abstract_canon_sha256":"fb78c0e51f2c8143f28a6d51e61bc16465de1bea3f79f21765214e0e954ad9a6"},"schema_version":"1.0"},"canonical_sha256":"7bb21f5500674952427e5c9c6c7aaea0fb0969825b838d8f35f4b1b246f91c5b","source":{"kind":"arxiv","id":"1507.00980","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.00980","created_at":"2026-05-18T01:37:22Z"},{"alias_kind":"arxiv_version","alias_value":"1507.00980v1","created_at":"2026-05-18T01:37:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.00980","created_at":"2026-05-18T01:37:22Z"},{"alias_kind":"pith_short_12","alias_value":"POZB6VIAM5EV","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"POZB6VIAM5EVEQT6","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"POZB6VIA","created_at":"2026-05-18T12:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:POZB6VIAM5EVEQT6LSOGY6VOUD","target":"record","payload":{"canonical_record":{"source":{"id":"1507.00980","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2015-07-03T18:23:13Z","cross_cats_sorted":["cs.PL"],"title_canon_sha256":"d2d58431a22e6db30f9eac3b32f5b731dcaf33367df1f983c9c7bde522e81d8a","abstract_canon_sha256":"fb78c0e51f2c8143f28a6d51e61bc16465de1bea3f79f21765214e0e954ad9a6"},"schema_version":"1.0"},"canonical_sha256":"7bb21f5500674952427e5c9c6c7aaea0fb0969825b838d8f35f4b1b246f91c5b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:37:22.109749Z","signature_b64":"vRRQdvEGGi6Apz/yxobWQQZwASSAj4O7D9+v/iVfZ4dm774Z8FaBH9wPGhUYhq2DqRkcwkGwe4xxFQyBIuGvCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7bb21f5500674952427e5c9c6c7aaea0fb0969825b838d8f35f4b1b246f91c5b","last_reissued_at":"2026-05-18T01:37:22.109007Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:37:22.109007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1507.00980","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:37:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W2PSDk24ApPdUcC1YV1jhWS7HSViqXSRm+RQ3SgZ7m9aCFATfor8r+rSoWNRv+e2+B7jA9y3GQCwiq+jdFOiDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T16:11:03.281345Z"},"content_sha256":"51400ab24a338b9ff10cf6edfaf53b46ae43d2b3b89434dd754c294e101c587f","schema_version":"1.0","event_id":"sha256:51400ab24a338b9ff10cf6edfaf53b46ae43d2b3b89434dd754c294e101c587f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:POZB6VIAM5EVEQT6LSOGY6VOUD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unfolding-based Partial Order Reduction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.PL"],"primary_cat":"cs.LO","authors_text":"C\\'esar Rodr\\'iguez, Daniel Kroening, Marcelo Sousa, Subodh Sharma","submitted_at":"2015-07-03T18:23:13Z","abstract_excerpt":"Partial order reduction (POR) and net unfoldings are two alternative methods to tackle state-space explosion caused by concurrency. In this paper, we propose the combination of both approaches in an effort to combine their strengths. We first define, for an abstract execution model, unfolding semantics parameterized over an arbitrary independence relation. Based on it, our main contribution is a novel stateless POR algorithm that explores at most one execution per Mazurkiewicz trace, and in general, can explore exponentially fewer, thus achieving a form of super-optimality. Furthermore, our un"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.00980","kind":"arxiv","version":1},"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":"2026-05-18T01:37:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HJAbVWrwkXaEZIJTRXaMDvxOQV5Q4eVNvm38TTxl/oFt8+evUQ/VhegteLQRlpUtOfmvWVlldsh6zohy1TXGBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T16:11:03.281878Z"},"content_sha256":"0ed4470e14f282d3afeb8d064923c7389313b64710ff5f5405be95f5eda189f4","schema_version":"1.0","event_id":"sha256:0ed4470e14f282d3afeb8d064923c7389313b64710ff5f5405be95f5eda189f4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/POZB6VIAM5EVEQT6LSOGY6VOUD/bundle.json","state_url":"https://pith.science/pith/POZB6VIAM5EVEQT6LSOGY6VOUD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/POZB6VIAM5EVEQT6LSOGY6VOUD/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":"2026-05-21T16:11:03Z","links":{"resolver":"https://pith.science/pith/POZB6VIAM5EVEQT6LSOGY6VOUD","bundle":"https://pith.science/pith/POZB6VIAM5EVEQT6LSOGY6VOUD/bundle.json","state":"https://pith.science/pith/POZB6VIAM5EVEQT6LSOGY6VOUD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/POZB6VIAM5EVEQT6LSOGY6VOUD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:POZB6VIAM5EVEQT6LSOGY6VOUD","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":"fb78c0e51f2c8143f28a6d51e61bc16465de1bea3f79f21765214e0e954ad9a6","cross_cats_sorted":["cs.PL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2015-07-03T18:23:13Z","title_canon_sha256":"d2d58431a22e6db30f9eac3b32f5b731dcaf33367df1f983c9c7bde522e81d8a"},"schema_version":"1.0","source":{"id":"1507.00980","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.00980","created_at":"2026-05-18T01:37:22Z"},{"alias_kind":"arxiv_version","alias_value":"1507.00980v1","created_at":"2026-05-18T01:37:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.00980","created_at":"2026-05-18T01:37:22Z"},{"alias_kind":"pith_short_12","alias_value":"POZB6VIAM5EV","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"POZB6VIAM5EVEQT6","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"POZB6VIA","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:0ed4470e14f282d3afeb8d064923c7389313b64710ff5f5405be95f5eda189f4","target":"graph","created_at":"2026-05-18T01:37:22Z","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":"Partial order reduction (POR) and net unfoldings are two alternative methods to tackle state-space explosion caused by concurrency. In this paper, we propose the combination of both approaches in an effort to combine their strengths. We first define, for an abstract execution model, unfolding semantics parameterized over an arbitrary independence relation. Based on it, our main contribution is a novel stateless POR algorithm that explores at most one execution per Mazurkiewicz trace, and in general, can explore exponentially fewer, thus achieving a form of super-optimality. Furthermore, our un","authors_text":"C\\'esar Rodr\\'iguez, Daniel Kroening, Marcelo Sousa, Subodh Sharma","cross_cats":["cs.PL"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2015-07-03T18:23:13Z","title":"Unfolding-based Partial Order Reduction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.00980","kind":"arxiv","version":1},"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":"sha256:51400ab24a338b9ff10cf6edfaf53b46ae43d2b3b89434dd754c294e101c587f","target":"record","created_at":"2026-05-18T01:37:22Z","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":"fb78c0e51f2c8143f28a6d51e61bc16465de1bea3f79f21765214e0e954ad9a6","cross_cats_sorted":["cs.PL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2015-07-03T18:23:13Z","title_canon_sha256":"d2d58431a22e6db30f9eac3b32f5b731dcaf33367df1f983c9c7bde522e81d8a"},"schema_version":"1.0","source":{"id":"1507.00980","kind":"arxiv","version":1}},"canonical_sha256":"7bb21f5500674952427e5c9c6c7aaea0fb0969825b838d8f35f4b1b246f91c5b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7bb21f5500674952427e5c9c6c7aaea0fb0969825b838d8f35f4b1b246f91c5b","first_computed_at":"2026-05-18T01:37:22.109007Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:37:22.109007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vRRQdvEGGi6Apz/yxobWQQZwASSAj4O7D9+v/iVfZ4dm774Z8FaBH9wPGhUYhq2DqRkcwkGwe4xxFQyBIuGvCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:37:22.109749Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.00980","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:51400ab24a338b9ff10cf6edfaf53b46ae43d2b3b89434dd754c294e101c587f","sha256:0ed4470e14f282d3afeb8d064923c7389313b64710ff5f5405be95f5eda189f4"],"state_sha256":"83eab7eace9530cd143441767033fd2ff35ea570369b3b4d2b83abd072901471"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bGn2JsFiBIBhgBKAxVpnu2aB4wvFO2P7OcXs10j9tt2w/RklnYdf4F3YaIaCFDw/53LlapmWCfSDIa+ds2ENDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T16:11:03.287707Z","bundle_sha256":"9f580818b4bc3195ca6a5676d02173bd834616039c985ccc4c69b16cbc69833e"}}