./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_14514e46-8c72-4aff-b21e-08099d7bff1d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14514e46-8c72-4aff-b21e-08099d7bff1d/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14514e46-8c72-4aff-b21e-08099d7bff1d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14514e46-8c72-4aff-b21e-08099d7bff1d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14514e46-8c72-4aff-b21e-08099d7bff1d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14514e46-8c72-4aff-b21e-08099d7bff1d/bin/uautomizer-verify-uCwYo4JHxu --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 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:47,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:47,279 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14514e46-8c72-4aff-b21e-08099d7bff1d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:40:47,290 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:47,290 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:47,334 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:47,335 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:47,335 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:47,337 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:40:47,341 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:40:47,343 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:47,344 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:47,344 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:47,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:47,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:40:47,347 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:47,347 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:47,347 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:47,348 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:47,348 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:40:47,349 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:40:47,349 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:40:47,349 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:40:47,351 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:40:47,352 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:47,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:40:47,352 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:47,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:47,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:47,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:40:47,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:47,356 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:47,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:40:47,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:40:47,356 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:47,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:40:47,357 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:40:47,357 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:40:47,357 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:40:47,358 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:40:47,358 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:40:47,358 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_14514e46-8c72-4aff-b21e-08099d7bff1d/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14514e46-8c72-4aff-b21e-08099d7bff1d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2023-11-19 07:40:47,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:47,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:47,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:47,704 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:47,705 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:47,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14514e46-8c72-4aff-b21e-08099d7bff1d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-19 07:40:50,822 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:40:51,072 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:40:51,076 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14514e46-8c72-4aff-b21e-08099d7bff1d/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-19 07:40:51,090 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14514e46-8c72-4aff-b21e-08099d7bff1d/bin/uautomizer-verify-uCwYo4JHxu/data/54695a894/140e5bc322ed45c3a1cb8fec5769c456/FLAG88b949e07 [2023-11-19 07:40:51,115 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14514e46-8c72-4aff-b21e-08099d7bff1d/bin/uautomizer-verify-uCwYo4JHxu/data/54695a894/140e5bc322ed45c3a1cb8fec5769c456 [2023-11-19 07:40:51,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:40:51,123 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:40:51,128 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:51,128 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:40:51,134 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:40:51,135 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:51" (1/1) ... [2023-11-19 07:40:51,136 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@648d784e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:51, skipping insertion in model container [2023-11-19 07:40:51,136 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:51" (1/1) ... [2023-11-19 07:40:51,181 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:51,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:51,528 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:40:51,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:51,641 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:40:51,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:51 WrapperNode [2023-11-19 07:40:51,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:51,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:51,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:40:51,644 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:40:51,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:51" (1/1) ... [2023-11-19 07:40:51,666 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:51" (1/1) ... [2023-11-19 07:40:51,705 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 281 [2023-11-19 07:40:51,706 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:51,706 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:40:51,707 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:40:51,707 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:40:51,717 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:51" (1/1) ... [2023-11-19 07:40:51,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:51" (1/1) ... [2023-11-19 07:40:51,726 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:51" (1/1) ... [2023-11-19 07:40:51,726 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:51" (1/1) ... [2023-11-19 07:40:51,750 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:51" (1/1) ... [2023-11-19 07:40:51,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:51" (1/1) ... [2023-11-19 07:40:51,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:51" (1/1) ... [2023-11-19 07:40:51,765 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:51" (1/1) ... [2023-11-19 07:40:51,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:40:51,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:40:51,773 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:40:51,773 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:40:51,774 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:51" (1/1) ... [2023-11-19 07:40:51,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:51,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14514e46-8c72-4aff-b21e-08099d7bff1d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:51,835 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14514e46-8c72-4aff-b21e-08099d7bff1d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:51,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14514e46-8c72-4aff-b21e-08099d7bff1d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:40:51,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:40:51,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:40:51,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:40:51,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:40:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:40:51,894 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:40:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:40:51,894 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:40:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:40:51,895 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:40:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:40:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:40:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:40:51,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:40:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:40:51,900 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:40:52,091 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:40:52,096 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:40:53,125 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:40:53,140 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:40:53,140 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 07:40:53,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:53 BoogieIcfgContainer [2023-11-19 07:40:53,147 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:40:53,150 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:40:53,150 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:40:53,153 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:40:53,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:40:51" (1/3) ... [2023-11-19 07:40:53,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24caba4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:53, skipping insertion in model container [2023-11-19 07:40:53,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:51" (2/3) ... [2023-11-19 07:40:53,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24caba4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:53, skipping insertion in model container [2023-11-19 07:40:53,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:53" (3/3) ... [2023-11-19 07:40:53,156 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2023-11-19 07:40:53,165 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:40:53,177 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:40:53,177 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2023-11-19 07:40:53,177 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:40:53,338 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:40:53,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 662 places, 685 transitions, 1391 flow [2023-11-19 07:40:53,724 INFO L124 PetriNetUnfolderBase]: 33/682 cut-off events. [2023-11-19 07:40:53,724 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:40:53,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 682 events. 33/682 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1774 event pairs, 0 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 493. Up to 3 conditions per place. [2023-11-19 07:40:53,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 662 places, 685 transitions, 1391 flow [2023-11-19 07:40:53,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 635 places, 656 transitions, 1330 flow [2023-11-19 07:40:53,765 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:40:53,774 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 635 places, 656 transitions, 1330 flow [2023-11-19 07:40:53,777 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 635 places, 656 transitions, 1330 flow [2023-11-19 07:40:53,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 635 places, 656 transitions, 1330 flow [2023-11-19 07:40:54,013 INFO L124 PetriNetUnfolderBase]: 31/656 cut-off events. [2023-11-19 07:40:54,013 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:40:54,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 656 events. 31/656 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1761 event pairs, 0 based on Foata normal form. 0/546 useless extension candidates. Maximal degree in co-relation 493. Up to 3 conditions per place. [2023-11-19 07:40:54,076 INFO L119 LiptonReduction]: Number of co-enabled transitions 92886 [2023-11-19 07:41:08,986 INFO L134 LiptonReduction]: Checked pairs total: 673594 [2023-11-19 07:41:08,986 INFO L136 LiptonReduction]: Total number of compositions: 539 [2023-11-19 07:41:09,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:41:09,011 INFO L357 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, mHoare=true, 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;@b624187, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:41:09,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 140 error locations. [2023-11-19 07:41:09,014 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:41:09,014 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:41:09,014 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:09,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:09,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:41:09,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2023-11-19 07:41:09,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:09,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2413, now seen corresponding path program 1 times [2023-11-19 07:41:09,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:09,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871348093] [2023-11-19 07:41:09,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:09,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:09,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:09,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:09,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871348093] [2023-11-19 07:41:09,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871348093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:09,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:09,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:41:09,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982411561] [2023-11-19 07:41:09,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:09,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:41:09,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:09,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:41:09,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:41:09,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 664 out of 1224 [2023-11-19 07:41:09,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 268 transitions, 554 flow. Second operand has 2 states, 2 states have (on average 664.5) internal successors, (1329), 2 states have internal predecessors, (1329), 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) [2023-11-19 07:41:09,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:09,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 664 of 1224 [2023-11-19 07:41:09,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:17,276 INFO L124 PetriNetUnfolderBase]: 18550/54708 cut-off events. [2023-11-19 07:41:17,276 INFO L125 PetriNetUnfolderBase]: For 779/779 co-relation queries the response was YES. [2023-11-19 07:41:17,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79454 conditions, 54708 events. 18550/54708 cut-off events. For 779/779 co-relation queries the response was YES. Maximal size of possible extension queue 1334. Compared 700238 event pairs, 12477 based on Foata normal form. 4571/47476 useless extension candidates. Maximal degree in co-relation 74005. Up to 24206 conditions per place. [2023-11-19 07:41:17,951 INFO L140 encePairwiseOnDemand]: 1192/1224 looper letters, 70 selfloop transitions, 0 changer transitions 1/236 dead transitions. [2023-11-19 07:41:17,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 236 transitions, 632 flow [2023-11-19 07:41:17,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:41:17,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:41:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1431 transitions. [2023-11-19 07:41:17,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5845588235294118 [2023-11-19 07:41:17,983 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1431 transitions. [2023-11-19 07:41:17,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1431 transitions. [2023-11-19 07:41:17,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:17,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1431 transitions. [2023-11-19 07:41:18,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 715.5) internal successors, (1431), 2 states have internal predecessors, (1431), 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) [2023-11-19 07:41:18,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1224.0) internal successors, (3672), 3 states have internal predecessors, (3672), 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) [2023-11-19 07:41:18,025 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1224.0) internal successors, (3672), 3 states have internal predecessors, (3672), 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) [2023-11-19 07:41:18,028 INFO L175 Difference]: Start difference. First operand has 257 places, 268 transitions, 554 flow. Second operand 2 states and 1431 transitions. [2023-11-19 07:41:18,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 236 transitions, 632 flow [2023-11-19 07:41:18,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 236 transitions, 620 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:41:18,061 INFO L231 Difference]: Finished difference. Result has 223 places, 235 transitions, 475 flow [2023-11-19 07:41:18,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1224, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=475, PETRI_PLACES=223, PETRI_TRANSITIONS=235} [2023-11-19 07:41:18,070 INFO L281 CegarLoopForPetriNet]: 257 programPoint places, -34 predicate places. [2023-11-19 07:41:18,071 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 235 transitions, 475 flow [2023-11-19 07:41:18,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 664.5) internal successors, (1329), 2 states have internal predecessors, (1329), 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) [2023-11-19 07:41:18,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:18,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:18,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:41:18,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2023-11-19 07:41:18,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:18,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1444290250, now seen corresponding path program 1 times [2023-11-19 07:41:18,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:18,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84497247] [2023-11-19 07:41:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:18,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:18,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:18,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84497247] [2023-11-19 07:41:18,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84497247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:18,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:18,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:41:18,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125499066] [2023-11-19 07:41:18,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:18,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:18,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:18,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:18,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:18,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 651 out of 1224 [2023-11-19 07:41:18,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 235 transitions, 475 flow. Second operand has 3 states, 3 states have (on average 653.3333333333334) internal successors, (1960), 3 states have internal predecessors, (1960), 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) [2023-11-19 07:41:18,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:18,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 651 of 1224 [2023-11-19 07:41:18,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:25,555 INFO L124 PetriNetUnfolderBase]: 25904/72956 cut-off events. [2023-11-19 07:41:25,555 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2023-11-19 07:41:25,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107224 conditions, 72956 events. 25904/72956 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 1685. Compared 948648 event pairs, 13230 based on Foata normal form. 0/58897 useless extension candidates. Maximal degree in co-relation 107221. Up to 33969 conditions per place. [2023-11-19 07:41:26,463 INFO L140 encePairwiseOnDemand]: 1218/1224 looper letters, 101 selfloop transitions, 2 changer transitions 0/259 dead transitions. [2023-11-19 07:41:26,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 259 transitions, 731 flow [2023-11-19 07:41:26,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:26,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2060 transitions. [2023-11-19 07:41:26,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5610021786492375 [2023-11-19 07:41:26,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2060 transitions. [2023-11-19 07:41:26,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2060 transitions. [2023-11-19 07:41:26,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:26,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2060 transitions. [2023-11-19 07:41:26,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 686.6666666666666) internal successors, (2060), 3 states have internal predecessors, (2060), 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) [2023-11-19 07:41:26,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1224.0) internal successors, (4896), 4 states have internal predecessors, (4896), 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) [2023-11-19 07:41:26,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1224.0) internal successors, (4896), 4 states have internal predecessors, (4896), 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) [2023-11-19 07:41:26,503 INFO L175 Difference]: Start difference. First operand has 223 places, 235 transitions, 475 flow. Second operand 3 states and 2060 transitions. [2023-11-19 07:41:26,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 259 transitions, 731 flow [2023-11-19 07:41:26,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 259 transitions, 731 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:41:26,515 INFO L231 Difference]: Finished difference. Result has 221 places, 233 transitions, 481 flow [2023-11-19 07:41:26,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1224, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=221, PETRI_TRANSITIONS=233} [2023-11-19 07:41:26,518 INFO L281 CegarLoopForPetriNet]: 257 programPoint places, -36 predicate places. [2023-11-19 07:41:26,518 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 233 transitions, 481 flow [2023-11-19 07:41:26,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 653.3333333333334) internal successors, (1960), 3 states have internal predecessors, (1960), 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) [2023-11-19 07:41:26,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:26,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:26,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:41:26,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2023-11-19 07:41:26,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:26,528 INFO L85 PathProgramCache]: Analyzing trace with hash -688444360, now seen corresponding path program 1 times [2023-11-19 07:41:26,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:26,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819885553] [2023-11-19 07:41:26,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:26,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:26,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:26,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819885553] [2023-11-19 07:41:26,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819885553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:26,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:26,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:41:26,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115139625] [2023-11-19 07:41:26,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:26,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:26,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:26,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:26,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:26,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 651 out of 1224 [2023-11-19 07:41:26,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 233 transitions, 481 flow. Second operand has 3 states, 3 states have (on average 653.6666666666666) internal successors, (1961), 3 states have internal predecessors, (1961), 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) [2023-11-19 07:41:26,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:26,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 651 of 1224 [2023-11-19 07:41:26,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:32,097 INFO L124 PetriNetUnfolderBase]: 24828/57218 cut-off events. [2023-11-19 07:41:32,097 INFO L125 PetriNetUnfolderBase]: For 1279/1279 co-relation queries the response was YES. [2023-11-19 07:41:32,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91176 conditions, 57218 events. 24828/57218 cut-off events. For 1279/1279 co-relation queries the response was YES. Maximal size of possible extension queue 1393. Compared 643116 event pairs, 5723 based on Foata normal form. 0/44748 useless extension candidates. Maximal degree in co-relation 91172. Up to 32294 conditions per place. [2023-11-19 07:41:32,633 INFO L140 encePairwiseOnDemand]: 1218/1224 looper letters, 101 selfloop transitions, 2 changer transitions 0/255 dead transitions. [2023-11-19 07:41:32,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 255 transitions, 743 flow [2023-11-19 07:41:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:32,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:32,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2056 transitions. [2023-11-19 07:41:32,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5599128540305011 [2023-11-19 07:41:32,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2056 transitions. [2023-11-19 07:41:32,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2056 transitions. [2023-11-19 07:41:32,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:32,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2056 transitions. [2023-11-19 07:41:32,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 685.3333333333334) internal successors, (2056), 3 states have internal predecessors, (2056), 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) [2023-11-19 07:41:32,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1224.0) internal successors, (4896), 4 states have internal predecessors, (4896), 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) [2023-11-19 07:41:32,668 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1224.0) internal successors, (4896), 4 states have internal predecessors, (4896), 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) [2023-11-19 07:41:32,669 INFO L175 Difference]: Start difference. First operand has 221 places, 233 transitions, 481 flow. Second operand 3 states and 2056 transitions. [2023-11-19 07:41:32,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 255 transitions, 743 flow [2023-11-19 07:41:32,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 255 transitions, 743 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:41:32,677 INFO L231 Difference]: Finished difference. Result has 220 places, 231 transitions, 487 flow [2023-11-19 07:41:32,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1224, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=487, PETRI_PLACES=220, PETRI_TRANSITIONS=231} [2023-11-19 07:41:32,680 INFO L281 CegarLoopForPetriNet]: 257 programPoint places, -37 predicate places. [2023-11-19 07:41:32,680 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 231 transitions, 487 flow [2023-11-19 07:41:32,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 653.6666666666666) internal successors, (1961), 3 states have internal predecessors, (1961), 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) [2023-11-19 07:41:32,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:32,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:32,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:41:32,688 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2023-11-19 07:41:32,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:32,689 INFO L85 PathProgramCache]: Analyzing trace with hash 217882853, now seen corresponding path program 1 times [2023-11-19 07:41:32,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:32,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413835818] [2023-11-19 07:41:32,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:32,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:32,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:32,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:32,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413835818] [2023-11-19 07:41:32,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413835818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:32,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:32,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:41:32,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260311701] [2023-11-19 07:41:32,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:32,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:32,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:32,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:32,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:32,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 651 out of 1224 [2023-11-19 07:41:32,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 231 transitions, 487 flow. Second operand has 3 states, 3 states have (on average 654.3333333333334) internal successors, (1963), 3 states have internal predecessors, (1963), 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) [2023-11-19 07:41:32,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:32,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 651 of 1224 [2023-11-19 07:41:32,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand