./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-atomic/qrcu-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832d29cb-e9bb-42ef-8a09-d184fcc1b3b4/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832d29cb-e9bb-42ef-8a09-d184fcc1b3b4/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832d29cb-e9bb-42ef-8a09-d184fcc1b3b4/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832d29cb-e9bb-42ef-8a09-d184fcc1b3b4/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/qrcu-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832d29cb-e9bb-42ef-8a09-d184fcc1b3b4/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832d29cb-e9bb-42ef-8a09-d184fcc1b3b4/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:57:08,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:57:08,434 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832d29cb-e9bb-42ef-8a09-d184fcc1b3b4/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 21:57:08,440 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:57:08,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:57:08,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:57:08,495 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:57:08,495 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:57:08,496 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:57:08,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:57:08,498 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:57:08,498 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:57:08,498 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:57:08,502 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:57:08,502 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:57:08,503 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:57:08,503 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:57:08,503 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:57:08,504 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:57:08,504 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:57:08,504 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:57:08,505 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:57:08,508 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 21:57:08,509 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:57:08,509 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 21:57:08,509 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:57:08,510 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:57:08,510 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:57:08,510 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:57:08,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:57:08,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:57:08,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:57:08,512 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:57:08,515 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:57:08,516 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:57:08,516 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:57:08,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:57:08,517 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:57:08,517 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:57:08,517 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:57:08,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:57:08,518 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832d29cb-e9bb-42ef-8a09-d184fcc1b3b4/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832d29cb-e9bb-42ef-8a09-d184fcc1b3b4/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 [2024-10-31 21:57:08,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:57:08,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:57:08,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:57:08,880 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:57:08,880 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:57:08,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832d29cb-e9bb-42ef-8a09-d184fcc1b3b4/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-atomic/qrcu-1.i Unable to find full path for "g++" [2024-10-31 21:57:11,173 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:57:11,521 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:57:11,524 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832d29cb-e9bb-42ef-8a09-d184fcc1b3b4/sv-benchmarks/c/pthread-atomic/qrcu-1.i [2024-10-31 21:57:11,546 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832d29cb-e9bb-42ef-8a09-d184fcc1b3b4/bin/uautomizer-verify-4GaUIPS5ZU/data/bf6fe88c5/d938cdc8dfac401cbb0c9c7b551691c1/FLAG9bf28f585 [2024-10-31 21:57:11,569 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832d29cb-e9bb-42ef-8a09-d184fcc1b3b4/bin/uautomizer-verify-4GaUIPS5ZU/data/bf6fe88c5/d938cdc8dfac401cbb0c9c7b551691c1 [2024-10-31 21:57:11,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:57:11,583 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:57:11,585 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:57:11,585 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:57:11,591 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:57:11,592 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:57:11" (1/1) ... [2024-10-31 21:57:11,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7815a503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:11, skipping insertion in model container [2024-10-31 21:57:11,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:57:11" (1/1) ... [2024-10-31 21:57:11,655 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:57:12,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:57:12,212 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:57:12,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:57:12,363 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:57:12,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:12 WrapperNode [2024-10-31 21:57:12,364 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:57:12,365 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:57:12,365 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:57:12,366 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:57:12,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:12" (1/1) ... [2024-10-31 21:57:12,397 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:12" (1/1) ... [2024-10-31 21:57:12,455 INFO L138 Inliner]: procedures = 178, calls = 42, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 454 [2024-10-31 21:57:12,460 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:57:12,461 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:57:12,461 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:57:12,461 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:57:12,473 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:12" (1/1) ... [2024-10-31 21:57:12,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:12" (1/1) ... [2024-10-31 21:57:12,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:12" (1/1) ... [2024-10-31 21:57:12,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:12" (1/1) ... [2024-10-31 21:57:12,527 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:12" (1/1) ... [2024-10-31 21:57:12,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:12" (1/1) ... [2024-10-31 21:57:12,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:12" (1/1) ... [2024-10-31 21:57:12,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:12" (1/1) ... [2024-10-31 21:57:12,552 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:57:12,557 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:57:12,557 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:57:12,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:57:12,558 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:12" (1/1) ... [2024-10-31 21:57:12,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:57:12,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832d29cb-e9bb-42ef-8a09-d184fcc1b3b4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:12,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832d29cb-e9bb-42ef-8a09-d184fcc1b3b4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:57:12,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832d29cb-e9bb-42ef-8a09-d184fcc1b3b4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:57:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader1 [2024-10-31 21:57:12,672 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader1 [2024-10-31 21:57:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader2 [2024-10-31 21:57:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader2 [2024-10-31 21:57:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-31 21:57:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-31 21:57:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_updater [2024-10-31 21:57:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_updater [2024-10-31 21:57:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 21:57:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:57:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 21:57:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 21:57:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 21:57:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 21:57:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:57:12,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:57:12,678 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 21:57:12,837 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:57:12,841 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:57:13,725 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 21:57:13,725 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:57:14,252 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:57:14,253 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-31 21:57:14,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:57:14 BoogieIcfgContainer [2024-10-31 21:57:14,253 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:57:14,258 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:57:14,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:57:14,262 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:57:14,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:57:11" (1/3) ... [2024-10-31 21:57:14,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d4ade0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:57:14, skipping insertion in model container [2024-10-31 21:57:14,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:12" (2/3) ... [2024-10-31 21:57:14,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d4ade0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:57:14, skipping insertion in model container [2024-10-31 21:57:14,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:57:14" (3/3) ... [2024-10-31 21:57:14,266 INFO L112 eAbstractionObserver]: Analyzing ICFG qrcu-1.i [2024-10-31 21:57:14,291 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:57:14,292 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2024-10-31 21:57:14,292 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 21:57:14,483 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 21:57:14,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 314 transitions, 649 flow [2024-10-31 21:57:14,799 INFO L124 PetriNetUnfolderBase]: 18/311 cut-off events. [2024-10-31 21:57:14,799 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 21:57:14,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 311 events. 18/311 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1018 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 280. Up to 4 conditions per place. [2024-10-31 21:57:14,825 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 314 transitions, 649 flow [2024-10-31 21:57:14,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 298 places, 306 transitions, 627 flow [2024-10-31 21:57:14,872 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:57:14,899 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@22254522, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:57:14,899 INFO L334 AbstractCegarLoop]: Starting to check reachability of 115 error locations. [2024-10-31 21:57:14,926 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:57:14,927 INFO L124 PetriNetUnfolderBase]: 1/40 cut-off events. [2024-10-31 21:57:14,927 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 21:57:14,927 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:14,928 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:14,928 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting qrcu_reader1Err0ASSERT_VIOLATIONDATA_RACE === [qrcu_reader1Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err1ASSERT_VIOLATIONDATA_RACE (and 112 more)] === [2024-10-31 21:57:14,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:14,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1280572813, now seen corresponding path program 1 times [2024-10-31 21:57:14,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:14,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906283314] [2024-10-31 21:57:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:14,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:15,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:15,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:15,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906283314] [2024-10-31 21:57:15,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906283314] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:15,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:15,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:57:15,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477419581] [2024-10-31 21:57:15,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:15,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:57:15,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:15,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:57:15,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:57:15,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 314 [2024-10-31 21:57:15,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 306 transitions, 627 flow. Second operand has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:15,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:15,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 314 [2024-10-31 21:57:15,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:17,355 INFO L124 PetriNetUnfolderBase]: 1313/6588 cut-off events. [2024-10-31 21:57:17,357 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-10-31 21:57:17,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8464 conditions, 6588 events. 1313/6588 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 66900 event pairs, 374 based on Foata normal form. 400/5819 useless extension candidates. Maximal degree in co-relation 8219. Up to 1529 conditions per place. [2024-10-31 21:57:17,457 INFO L140 encePairwiseOnDemand]: 270/314 looper letters, 40 selfloop transitions, 8 changer transitions 0/292 dead transitions. [2024-10-31 21:57:17,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 292 transitions, 707 flow [2024-10-31 21:57:17,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:57:17,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:57:17,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 867 transitions. [2024-10-31 21:57:17,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9203821656050956 [2024-10-31 21:57:17,555 INFO L175 Difference]: Start difference. First operand has 298 places, 306 transitions, 627 flow. Second operand 3 states and 867 transitions. [2024-10-31 21:57:17,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 292 transitions, 707 flow [2024-10-31 21:57:17,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 292 transitions, 691 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 21:57:17,579 INFO L231 Difference]: Finished difference. Result has 269 places, 278 transitions, 610 flow [2024-10-31 21:57:17,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=610, PETRI_PLACES=269, PETRI_TRANSITIONS=278} [2024-10-31 21:57:17,590 INFO L277 CegarLoopForPetriNet]: 298 programPoint places, -29 predicate places. [2024-10-31 21:57:17,590 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 278 transitions, 610 flow [2024-10-31 21:57:17,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:17,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:17,592 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:17,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:57:17,593 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting qrcu_reader1Err7ASSERT_VIOLATIONDATA_RACE === [qrcu_reader1Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err1ASSERT_VIOLATIONDATA_RACE (and 112 more)] === [2024-10-31 21:57:17,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash 647123907, now seen corresponding path program 1 times [2024-10-31 21:57:17,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:17,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439271189] [2024-10-31 21:57:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:17,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:17,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:17,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439271189] [2024-10-31 21:57:17,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439271189] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:17,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:17,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:57:17,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806529012] [2024-10-31 21:57:17,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:17,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:57:17,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:17,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:57:17,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:57:17,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 314 [2024-10-31 21:57:17,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 278 transitions, 610 flow. Second operand has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:17,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:17,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 314 [2024-10-31 21:57:17,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:19,580 INFO L124 PetriNetUnfolderBase]: 1267/6681 cut-off events. [2024-10-31 21:57:19,581 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2024-10-31 21:57:19,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8792 conditions, 6681 events. 1267/6681 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 70289 event pairs, 474 based on Foata normal form. 0/5542 useless extension candidates. Maximal degree in co-relation 4069. Up to 1264 conditions per place. [2024-10-31 21:57:19,692 INFO L140 encePairwiseOnDemand]: 309/314 looper letters, 30 selfloop transitions, 4 changer transitions 0/290 dead transitions. [2024-10-31 21:57:19,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 290 transitions, 705 flow [2024-10-31 21:57:19,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:57:19,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:57:19,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 812 transitions. [2024-10-31 21:57:19,697 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.861995753715499 [2024-10-31 21:57:19,698 INFO L175 Difference]: Start difference. First operand has 269 places, 278 transitions, 610 flow. Second operand 3 states and 812 transitions. [2024-10-31 21:57:19,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 290 transitions, 705 flow [2024-10-31 21:57:19,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 290 transitions, 689 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 21:57:19,711 INFO L231 Difference]: Finished difference. Result has 271 places, 281 transitions, 624 flow [2024-10-31 21:57:19,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=624, PETRI_PLACES=271, PETRI_TRANSITIONS=281} [2024-10-31 21:57:19,713 INFO L277 CegarLoopForPetriNet]: 298 programPoint places, -27 predicate places. [2024-10-31 21:57:19,713 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 281 transitions, 624 flow [2024-10-31 21:57:19,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:19,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:19,715 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:19,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:57:19,716 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting qrcu_reader1Err8ASSERT_VIOLATIONDATA_RACE === [qrcu_reader1Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err1ASSERT_VIOLATIONDATA_RACE (and 112 more)] === [2024-10-31 21:57:19,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:19,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1677518791, now seen corresponding path program 1 times [2024-10-31 21:57:19,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:19,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730753053] [2024-10-31 21:57:19,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:19,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:19,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:19,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730753053] [2024-10-31 21:57:19,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730753053] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:19,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:19,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:57:19,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686094048] [2024-10-31 21:57:19,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:19,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:57:19,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:19,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:57:19,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:57:19,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 314 [2024-10-31 21:57:19,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 281 transitions, 624 flow. Second operand has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:19,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:19,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 314 [2024-10-31 21:57:19,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:21,923 INFO L124 PetriNetUnfolderBase]: 1413/8166 cut-off events. [2024-10-31 21:57:21,924 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2024-10-31 21:57:22,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10551 conditions, 8166 events. 1413/8166 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 91501 event pairs, 523 based on Foata normal form. 0/6716 useless extension candidates. Maximal degree in co-relation 3606. Up to 1317 conditions per place. [2024-10-31 21:57:22,045 INFO L140 encePairwiseOnDemand]: 309/314 looper letters, 31 selfloop transitions, 4 changer transitions 0/293 dead transitions. [2024-10-31 21:57:22,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 293 transitions, 723 flow [2024-10-31 21:57:22,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:57:22,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:57:22,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 812 transitions. [2024-10-31 21:57:22,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.861995753715499 [2024-10-31 21:57:22,049 INFO L175 Difference]: Start difference. First operand has 271 places, 281 transitions, 624 flow. Second operand 3 states and 812 transitions. [2024-10-31 21:57:22,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 293 transitions, 723 flow [2024-10-31 21:57:22,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 293 transitions, 715 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 21:57:22,059 INFO L231 Difference]: Finished difference. Result has 273 places, 284 transitions, 648 flow [2024-10-31 21:57:22,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=648, PETRI_PLACES=273, PETRI_TRANSITIONS=284} [2024-10-31 21:57:22,060 INFO L277 CegarLoopForPetriNet]: 298 programPoint places, -25 predicate places. [2024-10-31 21:57:22,061 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 284 transitions, 648 flow [2024-10-31 21:57:22,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:22,062 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:22,062 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:22,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:57:22,063 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting qrcu_reader2Err7ASSERT_VIOLATIONDATA_RACE === [qrcu_reader1Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err1ASSERT_VIOLATIONDATA_RACE (and 112 more)] === [2024-10-31 21:57:22,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:22,064 INFO L85 PathProgramCache]: Analyzing trace with hash -501912605, now seen corresponding path program 1 times [2024-10-31 21:57:22,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:22,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217667] [2024-10-31 21:57:22,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:22,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:22,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:22,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217667] [2024-10-31 21:57:22,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217667] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:22,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:22,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:57:22,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650009651] [2024-10-31 21:57:22,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:22,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:57:22,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:22,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:57:22,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:57:22,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 314 [2024-10-31 21:57:22,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 284 transitions, 648 flow. Second operand has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:22,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:22,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 314 [2024-10-31 21:57:22,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:24,741 INFO L124 PetriNetUnfolderBase]: 1902/12329 cut-off events. [2024-10-31 21:57:24,741 INFO L125 PetriNetUnfolderBase]: For 464/482 co-relation queries the response was YES. [2024-10-31 21:57:24,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15803 conditions, 12329 events. 1902/12329 cut-off events. For 464/482 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 152374 event pairs, 716 based on Foata normal form. 0/10093 useless extension candidates. Maximal degree in co-relation 9856. Up to 1888 conditions per place. [2024-10-31 21:57:24,892 INFO L140 encePairwiseOnDemand]: 309/314 looper letters, 32 selfloop transitions, 6 changer transitions 0/298 dead transitions. [2024-10-31 21:57:24,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 298 transitions, 767 flow [2024-10-31 21:57:24,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:57:24,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:57:24,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 812 transitions. [2024-10-31 21:57:24,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.861995753715499 [2024-10-31 21:57:24,896 INFO L175 Difference]: Start difference. First operand has 273 places, 284 transitions, 648 flow. Second operand 3 states and 812 transitions. [2024-10-31 21:57:24,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 298 transitions, 767 flow [2024-10-31 21:57:24,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 298 transitions, 753 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-31 21:57:24,906 INFO L231 Difference]: Finished difference. Result has 275 places, 289 transitions, 692 flow [2024-10-31 21:57:24,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=275, PETRI_TRANSITIONS=289} [2024-10-31 21:57:24,910 INFO L277 CegarLoopForPetriNet]: 298 programPoint places, -23 predicate places. [2024-10-31 21:57:24,911 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 289 transitions, 692 flow [2024-10-31 21:57:24,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:24,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:24,913 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:24,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 21:57:24,914 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting qrcu_updaterErr4ASSERT_VIOLATIONDATA_RACE === [qrcu_reader1Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err1ASSERT_VIOLATIONDATA_RACE (and 112 more)] === [2024-10-31 21:57:24,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:24,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1529726229, now seen corresponding path program 1 times [2024-10-31 21:57:24,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:24,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352134576] [2024-10-31 21:57:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:24,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:25,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:25,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:25,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352134576] [2024-10-31 21:57:25,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352134576] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:25,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:25,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:57:25,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772655895] [2024-10-31 21:57:25,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:25,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:57:25,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:25,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:57:25,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:57:25,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 314 [2024-10-31 21:57:25,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 289 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:25,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:25,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 314 [2024-10-31 21:57:25,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:28,565 INFO L124 PetriNetUnfolderBase]: 3714/20865 cut-off events. [2024-10-31 21:57:28,565 INFO L125 PetriNetUnfolderBase]: For 1087/1094 co-relation queries the response was YES. [2024-10-31 21:57:28,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29606 conditions, 20865 events. 3714/20865 cut-off events. For 1087/1094 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 284282 event pairs, 611 based on Foata normal form. 0/17978 useless extension candidates. Maximal degree in co-relation 13507. Up to 3496 conditions per place. [2024-10-31 21:57:28,826 INFO L140 encePairwiseOnDemand]: 287/314 looper letters, 50 selfloop transitions, 20 changer transitions 0/315 dead transitions. [2024-10-31 21:57:28,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 315 transitions, 886 flow [2024-10-31 21:57:28,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:57:28,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:57:28,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 798 transitions. [2024-10-31 21:57:28,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8471337579617835 [2024-10-31 21:57:28,831 INFO L175 Difference]: Start difference. First operand has 275 places, 289 transitions, 692 flow. Second operand 3 states and 798 transitions. [2024-10-31 21:57:28,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 315 transitions, 886 flow [2024-10-31 21:57:28,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 315 transitions, 874 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 21:57:28,852 INFO L231 Difference]: Finished difference. Result has 277 places, 307 transitions, 846 flow [2024-10-31 21:57:28,853 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=846, PETRI_PLACES=277, PETRI_TRANSITIONS=307} [2024-10-31 21:57:28,854 INFO L277 CegarLoopForPetriNet]: 298 programPoint places, -21 predicate places. [2024-10-31 21:57:28,855 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 307 transitions, 846 flow [2024-10-31 21:57:28,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:28,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:28,856 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:28,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 21:57:28,857 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting qrcu_updaterErr6ASSERT_VIOLATIONDATA_RACE === [qrcu_reader1Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err1ASSERT_VIOLATIONDATA_RACE (and 112 more)] === [2024-10-31 21:57:28,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:28,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1529695444, now seen corresponding path program 1 times [2024-10-31 21:57:28,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:28,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502196843] [2024-10-31 21:57:28,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:28,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:28,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:28,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502196843] [2024-10-31 21:57:28,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502196843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:28,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:28,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:57:28,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585603698] [2024-10-31 21:57:28,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:28,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:57:28,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:28,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:57:28,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:57:29,046 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 314 [2024-10-31 21:57:29,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 307 transitions, 846 flow. Second operand has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:29,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:29,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 314 [2024-10-31 21:57:29,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:34,815 INFO L124 PetriNetUnfolderBase]: 6315/33154 cut-off events. [2024-10-31 21:57:34,815 INFO L125 PetriNetUnfolderBase]: For 8255/9022 co-relation queries the response was YES. [2024-10-31 21:57:35,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55139 conditions, 33154 events. 6315/33154 cut-off events. For 8255/9022 co-relation queries the response was YES. Maximal size of possible extension queue 1088. Compared 483566 event pairs, 889 based on Foata normal form. 26/29329 useless extension candidates. Maximal degree in co-relation 20118. Up to 5954 conditions per place. [2024-10-31 21:57:35,157 INFO L140 encePairwiseOnDemand]: 287/314 looper letters, 56 selfloop transitions, 22 changer transitions 0/337 dead transitions. [2024-10-31 21:57:35,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 337 transitions, 1088 flow [2024-10-31 21:57:35,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:57:35,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:57:35,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 798 transitions. [2024-10-31 21:57:35,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8471337579617835 [2024-10-31 21:57:35,161 INFO L175 Difference]: Start difference. First operand has 277 places, 307 transitions, 846 flow. Second operand 3 states and 798 transitions. [2024-10-31 21:57:35,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 337 transitions, 1088 flow [2024-10-31 21:57:35,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 337 transitions, 1040 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 21:57:35,254 INFO L231 Difference]: Finished difference. Result has 279 places, 327 transitions, 996 flow [2024-10-31 21:57:35,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=996, PETRI_PLACES=279, PETRI_TRANSITIONS=327} [2024-10-31 21:57:35,255 INFO L277 CegarLoopForPetriNet]: 298 programPoint places, -19 predicate places. [2024-10-31 21:57:35,257 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 327 transitions, 996 flow [2024-10-31 21:57:35,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:35,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:35,261 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:35,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 21:57:35,262 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting qrcu_reader2Err8ASSERT_VIOLATIONDATA_RACE === [qrcu_reader1Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err1ASSERT_VIOLATIONDATA_RACE (and 112 more)] === [2024-10-31 21:57:35,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:35,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1879124009, now seen corresponding path program 1 times [2024-10-31 21:57:35,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:35,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249211759] [2024-10-31 21:57:35,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:35,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:35,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:35,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249211759] [2024-10-31 21:57:35,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249211759] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:35,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:35,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:57:35,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408676029] [2024-10-31 21:57:35,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:35,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:57:35,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:35,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:57:35,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:57:35,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 314 [2024-10-31 21:57:35,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 327 transitions, 996 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:35,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:35,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 314 [2024-10-31 21:57:35,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand