./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl --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 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:24:17,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:24:18,009 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-12 02:24:18,014 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:24:18,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:24:18,044 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:24:18,045 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:24:18,045 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:24:18,046 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:24:18,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:24:18,048 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:24:18,049 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:24:18,049 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:24:18,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:24:18,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:24:18,051 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:24:18,052 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:24:18,053 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:24:18,053 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:24:18,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:24:18,055 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:24:18,055 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:24:18,056 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 02:24:18,057 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:24:18,057 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:24:18,058 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:24:18,059 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:24:18,059 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:24:18,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:24:18,060 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:24:18,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:18,061 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:24:18,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:24:18,062 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:24:18,063 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:24:18,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:24:18,064 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:24:18,064 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:24:18,065 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:24:18,065 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:24:18,066 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:24:18,066 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_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba [2023-11-12 02:24:18,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:24:18,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:24:18,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:24:18,478 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:24:18,479 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:24:18,480 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-11-12 02:24:21,714 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:24:21,770 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-12 02:24:22,140 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:24:22,141 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-11-12 02:24:22,170 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/data/0d1d3f968/5fe4852df0e34182b2f8d01fc45b31ef/FLAG99cef191a [2023-11-12 02:24:22,191 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/data/0d1d3f968/5fe4852df0e34182b2f8d01fc45b31ef [2023-11-12 02:24:22,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:24:22,201 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:24:22,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:22,203 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:24:22,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:24:22,210 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:22" (1/1) ... [2023-11-12 02:24:22,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72bcb4a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:22, skipping insertion in model container [2023-11-12 02:24:22,212 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:22" (1/1) ... [2023-11-12 02:24:22,290 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:24:22,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:22,930 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:24:23,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:23,113 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:24:23,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23 WrapperNode [2023-11-12 02:24:23,114 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:23,116 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:23,116 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:24:23,116 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:24:23,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,161 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,226 INFO L138 Inliner]: procedures = 271, calls = 32, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 266 [2023-11-12 02:24:23,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:23,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:24:23,230 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:24:23,230 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:24:23,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,270 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,305 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,327 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,341 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,347 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:24:23,355 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:24:23,355 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:24:23,356 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:24:23,357 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:23,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:23,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:24:23,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:24:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:24:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:24:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:24:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:24:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:24:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:24:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-12 02:24:23,472 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-12 02:24:23,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:24:23,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:24:23,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:24:23,480 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:24:23,724 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:24:23,733 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:24:24,418 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:24:24,430 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:24:24,436 INFO L302 CfgBuilder]: Removed 25 assume(true) statements. [2023-11-12 02:24:24,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:24 BoogieIcfgContainer [2023-11-12 02:24:24,441 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:24:24,447 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:24:24,447 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:24:24,451 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:24:24,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:24:22" (1/3) ... [2023-11-12 02:24:24,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a02d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:24, skipping insertion in model container [2023-11-12 02:24:24,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (2/3) ... [2023-11-12 02:24:24,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a02d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:24, skipping insertion in model container [2023-11-12 02:24:24,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:24" (3/3) ... [2023-11-12 02:24:24,457 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2023-11-12 02:24:24,467 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:24:24,481 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:24:24,481 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-12 02:24:24,481 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:24:24,608 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 02:24:24,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 283 transitions, 573 flow [2023-11-12 02:24:24,841 INFO L124 PetriNetUnfolderBase]: 52/414 cut-off events. [2023-11-12 02:24:24,842 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:24:24,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 414 events. 52/414 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1821 event pairs, 0 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 246. Up to 8 conditions per place. [2023-11-12 02:24:24,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 251 places, 283 transitions, 573 flow [2023-11-12 02:24:24,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 251 places, 283 transitions, 573 flow [2023-11-12 02:24:24,869 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:24:24,888 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 251 places, 283 transitions, 573 flow [2023-11-12 02:24:24,898 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 251 places, 283 transitions, 573 flow [2023-11-12 02:24:24,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 283 transitions, 573 flow [2023-11-12 02:24:25,043 INFO L124 PetriNetUnfolderBase]: 52/414 cut-off events. [2023-11-12 02:24:25,044 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:24:25,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 414 events. 52/414 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1821 event pairs, 0 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 246. Up to 8 conditions per place. [2023-11-12 02:24:25,077 INFO L119 LiptonReduction]: Number of co-enabled transitions 30140 [2023-11-12 02:24:29,481 INFO L134 LiptonReduction]: Checked pairs total: 108424 [2023-11-12 02:24:29,482 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-11-12 02:24:29,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:24:29,527 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;@515b142a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:24:29,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-12 02:24:29,536 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:24:29,536 INFO L124 PetriNetUnfolderBase]: 7/30 cut-off events. [2023-11-12 02:24:29,536 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:24:29,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:29,537 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-12 02:24:29,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-12 02:24:29,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:29,549 INFO L85 PathProgramCache]: Analyzing trace with hash 95307048, now seen corresponding path program 1 times [2023-11-12 02:24:29,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:29,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792019133] [2023-11-12 02:24:29,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:29,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:24:29,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:29,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792019133] [2023-11-12 02:24:29,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792019133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:29,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:29,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:24:29,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645204804] [2023-11-12 02:24:29,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:29,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:29,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:30,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:30,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:30,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 472 [2023-11-12 02:24:30,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 137 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 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) [2023-11-12 02:24:30,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:30,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 472 [2023-11-12 02:24:30,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:30,560 INFO L124 PetriNetUnfolderBase]: 483/1714 cut-off events. [2023-11-12 02:24:30,561 INFO L125 PetriNetUnfolderBase]: For 8/13 co-relation queries the response was YES. [2023-11-12 02:24:30,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 1714 events. 483/1714 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11745 event pairs, 396 based on Foata normal form. 188/1726 useless extension candidates. Maximal degree in co-relation 2521. Up to 903 conditions per place. [2023-11-12 02:24:30,575 INFO L140 encePairwiseOnDemand]: 447/472 looper letters, 47 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2023-11-12 02:24:30,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 337 flow [2023-11-12 02:24:30,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:30,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 804 transitions. [2023-11-12 02:24:30,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677966101694916 [2023-11-12 02:24:30,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 804 transitions. [2023-11-12 02:24:30,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 804 transitions. [2023-11-12 02:24:30,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:30,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 804 transitions. [2023-11-12 02:24:30,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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) [2023-11-12 02:24:30,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 472.0) internal successors, (1888), 4 states have internal predecessors, (1888), 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) [2023-11-12 02:24:30,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 472.0) internal successors, (1888), 4 states have internal predecessors, (1888), 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) [2023-11-12 02:24:30,622 INFO L175 Difference]: Start difference. First operand has 112 places, 137 transitions, 281 flow. Second operand 3 states and 804 transitions. [2023-11-12 02:24:30,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 337 flow [2023-11-12 02:24:30,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 116 transitions, 337 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:24:30,631 INFO L231 Difference]: Finished difference. Result has 115 places, 116 transitions, 249 flow [2023-11-12 02:24:30,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=472, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=115, PETRI_TRANSITIONS=116} [2023-11-12 02:24:30,639 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 3 predicate places. [2023-11-12 02:24:30,639 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 116 transitions, 249 flow [2023-11-12 02:24:30,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 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) [2023-11-12 02:24:30,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:30,641 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:30,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:24:30,642 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-12 02:24:30,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:30,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1899819018, now seen corresponding path program 1 times [2023-11-12 02:24:30,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:30,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503845486] [2023-11-12 02:24:30,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:30,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:24:30,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:30,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503845486] [2023-11-12 02:24:30,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503845486] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:30,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554565192] [2023-11-12 02:24:30,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:30,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:30,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:30,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:30,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:24:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:30,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:24:30,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:24:31,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:24:31,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554565192] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:31,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:24:31,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-12 02:24:31,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815431825] [2023-11-12 02:24:31,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:31,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:24:31,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:31,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:24:31,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:24:31,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 472 [2023-11-12 02:24:31,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 116 transitions, 249 flow. Second operand has 7 states, 7 states have (on average 244.57142857142858) internal successors, (1712), 7 states have internal predecessors, (1712), 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) [2023-11-12 02:24:31,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:31,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 472 [2023-11-12 02:24:31,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:31,559 INFO L124 PetriNetUnfolderBase]: 483/1717 cut-off events. [2023-11-12 02:24:31,559 INFO L125 PetriNetUnfolderBase]: For 8/13 co-relation queries the response was YES. [2023-11-12 02:24:31,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2639 conditions, 1717 events. 483/1717 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11765 event pairs, 396 based on Foata normal form. 0/1541 useless extension candidates. Maximal degree in co-relation 2627. Up to 903 conditions per place. [2023-11-12 02:24:31,575 INFO L140 encePairwiseOnDemand]: 469/472 looper letters, 47 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2023-11-12 02:24:31,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 119 transitions, 365 flow [2023-11-12 02:24:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:24:31,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:24:31,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1513 transitions. [2023-11-12 02:24:31,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342514124293786 [2023-11-12 02:24:31,584 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1513 transitions. [2023-11-12 02:24:31,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1513 transitions. [2023-11-12 02:24:31,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:31,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1513 transitions. [2023-11-12 02:24:31,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 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) [2023-11-12 02:24:31,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 472.0) internal successors, (3304), 7 states have internal predecessors, (3304), 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) [2023-11-12 02:24:31,606 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 472.0) internal successors, (3304), 7 states have internal predecessors, (3304), 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) [2023-11-12 02:24:31,607 INFO L175 Difference]: Start difference. First operand has 115 places, 116 transitions, 249 flow. Second operand 6 states and 1513 transitions. [2023-11-12 02:24:31,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 119 transitions, 365 flow [2023-11-12 02:24:31,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 119 transitions, 361 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:24:31,614 INFO L231 Difference]: Finished difference. Result has 122 places, 119 transitions, 281 flow [2023-11-12 02:24:31,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=472, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=281, PETRI_PLACES=122, PETRI_TRANSITIONS=119} [2023-11-12 02:24:31,616 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 10 predicate places. [2023-11-12 02:24:31,616 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 281 flow [2023-11-12 02:24:31,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 244.57142857142858) internal successors, (1712), 7 states have internal predecessors, (1712), 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) [2023-11-12 02:24:31,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:31,619 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-12 02:24:31,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:31,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:31,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-12 02:24:31,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:31,827 INFO L85 PathProgramCache]: Analyzing trace with hash 166824104, now seen corresponding path program 2 times [2023-11-12 02:24:31,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:31,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718081285] [2023-11-12 02:24:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:31,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:32,089 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:24:32,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:32,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718081285] [2023-11-12 02:24:32,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718081285] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:32,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729378018] [2023-11-12 02:24:32,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:24:32,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:32,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:32,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:32,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:24:32,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:24:32,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:24:32,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:24:32,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:24:32,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:24:32,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729378018] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:32,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:24:32,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-12 02:24:32,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031154109] [2023-11-12 02:24:32,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:32,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:24:32,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:32,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:24:32,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:24:32,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 472 [2023-11-12 02:24:32,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 281 flow. Second operand has 13 states, 13 states have (on average 244.30769230769232) internal successors, (3176), 13 states have internal predecessors, (3176), 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) [2023-11-12 02:24:32,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:32,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 472 [2023-11-12 02:24:32,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:32,765 INFO L124 PetriNetUnfolderBase]: 483/1723 cut-off events. [2023-11-12 02:24:32,765 INFO L125 PetriNetUnfolderBase]: For 28/33 co-relation queries the response was YES. [2023-11-12 02:24:32,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 1723 events. 483/1723 cut-off events. For 28/33 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11757 event pairs, 396 based on Foata normal form. 6/1554 useless extension candidates. Maximal degree in co-relation 2618. Up to 903 conditions per place. [2023-11-12 02:24:32,779 INFO L140 encePairwiseOnDemand]: 469/472 looper letters, 47 selfloop transitions, 11 changer transitions 0/125 dead transitions. [2023-11-12 02:24:32,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 125 transitions, 433 flow [2023-11-12 02:24:32,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:24:32,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-12 02:24:32,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2980 transitions. [2023-11-12 02:24:32,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261299435028248 [2023-11-12 02:24:32,792 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2980 transitions. [2023-11-12 02:24:32,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2980 transitions. [2023-11-12 02:24:32,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:32,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2980 transitions. [2023-11-12 02:24:32,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 248.33333333333334) internal successors, (2980), 12 states have internal predecessors, (2980), 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) [2023-11-12 02:24:32,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 472.0) internal successors, (6136), 13 states have internal predecessors, (6136), 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) [2023-11-12 02:24:32,828 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 472.0) internal successors, (6136), 13 states have internal predecessors, (6136), 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) [2023-11-12 02:24:32,828 INFO L175 Difference]: Start difference. First operand has 122 places, 119 transitions, 281 flow. Second operand 12 states and 2980 transitions. [2023-11-12 02:24:32,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 125 transitions, 433 flow [2023-11-12 02:24:32,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 125 transitions, 419 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-12 02:24:32,840 INFO L231 Difference]: Finished difference. Result has 138 places, 125 transitions, 351 flow [2023-11-12 02:24:32,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=472, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=351, PETRI_PLACES=138, PETRI_TRANSITIONS=125} [2023-11-12 02:24:32,842 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 26 predicate places. [2023-11-12 02:24:32,843 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 125 transitions, 351 flow [2023-11-12 02:24:32,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 244.30769230769232) internal successors, (3176), 13 states have internal predecessors, (3176), 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) [2023-11-12 02:24:32,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:32,845 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-12 02:24:32,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:33,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:33,052 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-12 02:24:33,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:33,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1667933672, now seen corresponding path program 3 times [2023-11-12 02:24:33,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:33,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429732034] [2023-11-12 02:24:33,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:33,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:24:33,111 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:24:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:24:33,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:24:33,177 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:24:33,178 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-12 02:24:33,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-12 02:24:33,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-12 02:24:33,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-12 02:24:33,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-12 02:24:33,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-12 02:24:33,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-12 02:24:33,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-12 02:24:33,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-12 02:24:33,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-12 02:24:33,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-12 02:24:33,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-12 02:24:33,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-12 02:24:33,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-12 02:24:33,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-12 02:24:33,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-12 02:24:33,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-12 02:24:33,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:24:33,191 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-11-12 02:24:33,195 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:24:33,195 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:24:33,282 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:24:33,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 395 transitions, 806 flow [2023-11-12 02:24:33,501 INFO L124 PetriNetUnfolderBase]: 87/689 cut-off events. [2023-11-12 02:24:33,501 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:24:33,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 689 events. 87/689 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3775 event pairs, 0 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 416. Up to 12 conditions per place. [2023-11-12 02:24:33,514 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 395 transitions, 806 flow [2023-11-12 02:24:33,525 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 395 transitions, 806 flow [2023-11-12 02:24:33,526 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:24:33,526 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 349 places, 395 transitions, 806 flow [2023-11-12 02:24:33,526 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 349 places, 395 transitions, 806 flow [2023-11-12 02:24:33,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 395 transitions, 806 flow [2023-11-12 02:24:33,681 INFO L124 PetriNetUnfolderBase]: 87/689 cut-off events. [2023-11-12 02:24:33,681 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:24:33,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 689 events. 87/689 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3775 event pairs, 0 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 416. Up to 12 conditions per place. [2023-11-12 02:24:33,745 INFO L119 LiptonReduction]: Number of co-enabled transitions 86900 [2023-11-12 02:24:38,592 INFO L134 LiptonReduction]: Checked pairs total: 315053 [2023-11-12 02:24:38,593 INFO L136 LiptonReduction]: Total number of compositions: 253 [2023-11-12 02:24:38,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:24:38,596 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;@515b142a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:24:38,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-12 02:24:38,602 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:24:38,602 INFO L124 PetriNetUnfolderBase]: 13/65 cut-off events. [2023-11-12 02:24:38,602 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:24:38,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:38,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:38,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-12 02:24:38,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:38,604 INFO L85 PathProgramCache]: Analyzing trace with hash -363413164, now seen corresponding path program 1 times [2023-11-12 02:24:38,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:38,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212410411] [2023-11-12 02:24:38,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:38,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:38,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:38,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212410411] [2023-11-12 02:24:38,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212410411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:38,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:38,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:24:38,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474962014] [2023-11-12 02:24:38,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:38,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:38,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:38,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:38,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:38,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 648 [2023-11-12 02:24:38,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 201 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 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) [2023-11-12 02:24:38,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:38,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 648 [2023-11-12 02:24:38,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:44,728 INFO L124 PetriNetUnfolderBase]: 18367/41842 cut-off events. [2023-11-12 02:24:44,729 INFO L125 PetriNetUnfolderBase]: For 257/329 co-relation queries the response was YES. [2023-11-12 02:24:44,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67986 conditions, 41842 events. 18367/41842 cut-off events. For 257/329 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 442190 event pairs, 15876 based on Foata normal form. 5449/42598 useless extension candidates. Maximal degree in co-relation 30382. Up to 26041 conditions per place. [2023-11-12 02:24:45,086 INFO L140 encePairwiseOnDemand]: 612/648 looper letters, 68 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2023-11-12 02:24:45,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 169 transitions, 494 flow [2023-11-12 02:24:45,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:45,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:45,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1124 transitions. [2023-11-12 02:24:45,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5781893004115226 [2023-11-12 02:24:45,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1124 transitions. [2023-11-12 02:24:45,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1124 transitions. [2023-11-12 02:24:45,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:45,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1124 transitions. [2023-11-12 02:24:45,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 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) [2023-11-12 02:24:45,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 648.0) internal successors, (2592), 4 states have internal predecessors, (2592), 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) [2023-11-12 02:24:45,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 648.0) internal successors, (2592), 4 states have internal predecessors, (2592), 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) [2023-11-12 02:24:45,102 INFO L175 Difference]: Start difference. First operand has 164 places, 201 transitions, 418 flow. Second operand 3 states and 1124 transitions. [2023-11-12 02:24:45,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 169 transitions, 494 flow [2023-11-12 02:24:45,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 169 transitions, 494 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:24:45,108 INFO L231 Difference]: Finished difference. Result has 167 places, 169 transitions, 364 flow [2023-11-12 02:24:45,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=648, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=364, PETRI_PLACES=167, PETRI_TRANSITIONS=169} [2023-11-12 02:24:45,111 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 3 predicate places. [2023-11-12 02:24:45,111 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 169 transitions, 364 flow [2023-11-12 02:24:45,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 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) [2023-11-12 02:24:45,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:45,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:45,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:24:45,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-12 02:24:45,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:45,113 INFO L85 PathProgramCache]: Analyzing trace with hash -315798838, now seen corresponding path program 1 times [2023-11-12 02:24:45,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:45,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903156280] [2023-11-12 02:24:45,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:45,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:45,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:45,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903156280] [2023-11-12 02:24:45,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903156280] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:45,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536915769] [2023-11-12 02:24:45,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:45,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:45,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:45,180 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:45,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:24:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:45,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:24:45,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:24:45,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:24:45,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536915769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:45,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:24:45,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-12 02:24:45,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632907799] [2023-11-12 02:24:45,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:45,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:45,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:45,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:45,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:24:45,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 648 [2023-11-12 02:24:45,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 169 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 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) [2023-11-12 02:24:45,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:45,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 648 [2023-11-12 02:24:45,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:49,690 INFO L124 PetriNetUnfolderBase]: 17982/41292 cut-off events. [2023-11-12 02:24:49,690 INFO L125 PetriNetUnfolderBase]: For 298/438 co-relation queries the response was YES. [2023-11-12 02:24:49,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67424 conditions, 41292 events. 17982/41292 cut-off events. For 298/438 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 441147 event pairs, 7596 based on Foata normal form. 0/36718 useless extension candidates. Maximal degree in co-relation 67411. Up to 26001 conditions per place. [2023-11-12 02:24:49,953 INFO L140 encePairwiseOnDemand]: 645/648 looper letters, 89 selfloop transitions, 2 changer transitions 0/190 dead transitions. [2023-11-12 02:24:49,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 190 transitions, 588 flow [2023-11-12 02:24:49,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:49,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1111 transitions. [2023-11-12 02:24:49,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5715020576131687 [2023-11-12 02:24:49,958 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1111 transitions. [2023-11-12 02:24:49,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1111 transitions. [2023-11-12 02:24:49,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:49,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1111 transitions. [2023-11-12 02:24:49,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 370.3333333333333) internal successors, (1111), 3 states have internal predecessors, (1111), 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) [2023-11-12 02:24:49,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 648.0) internal successors, (2592), 4 states have internal predecessors, (2592), 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) [2023-11-12 02:24:49,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 648.0) internal successors, (2592), 4 states have internal predecessors, (2592), 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) [2023-11-12 02:24:49,970 INFO L175 Difference]: Start difference. First operand has 167 places, 169 transitions, 364 flow. Second operand 3 states and 1111 transitions. [2023-11-12 02:24:49,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 190 transitions, 588 flow [2023-11-12 02:24:49,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 190 transitions, 584 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:24:49,979 INFO L231 Difference]: Finished difference. Result has 169 places, 170 transitions, 372 flow [2023-11-12 02:24:49,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=648, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=169, PETRI_TRANSITIONS=170} [2023-11-12 02:24:49,984 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 5 predicate places. [2023-11-12 02:24:49,984 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 170 transitions, 372 flow [2023-11-12 02:24:49,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 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) [2023-11-12 02:24:49,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:49,985 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:49,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:50,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:50,194 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-12 02:24:50,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:50,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1339499845, now seen corresponding path program 1 times [2023-11-12 02:24:50,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:50,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142213789] [2023-11-12 02:24:50,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:50,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:24:50,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:50,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142213789] [2023-11-12 02:24:50,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142213789] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:50,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131075970] [2023-11-12 02:24:50,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:50,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:50,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:50,262 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:50,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:24:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:50,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:24:50,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:24:50,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:24:50,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131075970] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:50,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:24:50,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-12 02:24:50,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101852831] [2023-11-12 02:24:50,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:50,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:24:50,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:50,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:24:50,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:24:50,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 648 [2023-11-12 02:24:50,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 170 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 340.7142857142857) internal successors, (2385), 7 states have internal predecessors, (2385), 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) [2023-11-12 02:24:50,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:50,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 648 [2023-11-12 02:24:50,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:54,872 INFO L124 PetriNetUnfolderBase]: 18400/42158 cut-off events. [2023-11-12 02:24:54,872 INFO L125 PetriNetUnfolderBase]: For 1018/1096 co-relation queries the response was YES. [2023-11-12 02:24:54,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69075 conditions, 42158 events. 18400/42158 cut-off events. For 1018/1096 co-relation queries the response was YES. Maximal size of possible extension queue 983. Compared 447771 event pairs, 15876 based on Foata normal form. 3/37734 useless extension candidates. Maximal degree in co-relation 69047. Up to 26022 conditions per place. [2023-11-12 02:24:55,141 INFO L140 encePairwiseOnDemand]: 645/648 looper letters, 69 selfloop transitions, 5 changer transitions 0/173 dead transitions. [2023-11-12 02:24:55,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 173 transitions, 532 flow [2023-11-12 02:24:55,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:24:55,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:24:55,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2110 transitions. [2023-11-12 02:24:55,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5426954732510288 [2023-11-12 02:24:55,152 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2110 transitions. [2023-11-12 02:24:55,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2110 transitions. [2023-11-12 02:24:55,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:55,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2110 transitions. [2023-11-12 02:24:55,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 351.6666666666667) internal successors, (2110), 6 states have internal predecessors, (2110), 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) [2023-11-12 02:24:55,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 648.0) internal successors, (4536), 7 states have internal predecessors, (4536), 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) [2023-11-12 02:24:55,172 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 648.0) internal successors, (4536), 7 states have internal predecessors, (4536), 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) [2023-11-12 02:24:55,172 INFO L175 Difference]: Start difference. First operand has 169 places, 170 transitions, 372 flow. Second operand 6 states and 2110 transitions. [2023-11-12 02:24:55,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 173 transitions, 532 flow [2023-11-12 02:24:55,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 173 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:24:55,178 INFO L231 Difference]: Finished difference. Result has 176 places, 173 transitions, 406 flow [2023-11-12 02:24:55,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=648, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=406, PETRI_PLACES=176, PETRI_TRANSITIONS=173} [2023-11-12 02:24:55,181 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 12 predicate places. [2023-11-12 02:24:55,181 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 173 transitions, 406 flow [2023-11-12 02:24:55,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 340.7142857142857) internal successors, (2385), 7 states have internal predecessors, (2385), 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) [2023-11-12 02:24:55,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:55,183 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:24:55,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:55,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:55,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-12 02:24:55,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:55,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1327927601, now seen corresponding path program 2 times [2023-11-12 02:24:55,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:55,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058345109] [2023-11-12 02:24:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:55,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:55,521 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:24:55,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:55,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058345109] [2023-11-12 02:24:55,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058345109] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:55,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286427856] [2023-11-12 02:24:55,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:24:55,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:55,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:55,524 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:55,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:24:55,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:24:55,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:24:55,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:24:55,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:24:55,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:55,749 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:24:55,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286427856] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:55,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:24:55,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-12 02:24:55,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422432599] [2023-11-12 02:24:55,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:55,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:24:55,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:55,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:24:55,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:24:55,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 648 [2023-11-12 02:24:55,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 173 transitions, 406 flow. Second operand has 13 states, 13 states have (on average 340.38461538461536) internal successors, (4425), 13 states have internal predecessors, (4425), 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) [2023-11-12 02:24:55,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:55,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 648 [2023-11-12 02:24:55,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:00,727 INFO L124 PetriNetUnfolderBase]: 18400/42164 cut-off events. [2023-11-12 02:25:00,727 INFO L125 PetriNetUnfolderBase]: For 1052/1130 co-relation queries the response was YES. [2023-11-12 02:25:00,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69095 conditions, 42164 events. 18400/42164 cut-off events. For 1052/1130 co-relation queries the response was YES. Maximal size of possible extension queue 983. Compared 447372 event pairs, 15876 based on Foata normal form. 6/37743 useless extension candidates. Maximal degree in co-relation 69035. Up to 26022 conditions per place. [2023-11-12 02:25:00,985 INFO L140 encePairwiseOnDemand]: 645/648 looper letters, 69 selfloop transitions, 11 changer transitions 0/179 dead transitions. [2023-11-12 02:25:00,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 179 transitions, 602 flow [2023-11-12 02:25:00,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:25:00,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-12 02:25:01,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4153 transitions. [2023-11-12 02:25:01,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340792181069959 [2023-11-12 02:25:01,006 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4153 transitions. [2023-11-12 02:25:01,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4153 transitions. [2023-11-12 02:25:01,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:01,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4153 transitions. [2023-11-12 02:25:01,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 346.0833333333333) internal successors, (4153), 12 states have internal predecessors, (4153), 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) [2023-11-12 02:25:01,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 648.0) internal successors, (8424), 13 states have internal predecessors, (8424), 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) [2023-11-12 02:25:01,039 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 648.0) internal successors, (8424), 13 states have internal predecessors, (8424), 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) [2023-11-12 02:25:01,039 INFO L175 Difference]: Start difference. First operand has 176 places, 173 transitions, 406 flow. Second operand 12 states and 4153 transitions. [2023-11-12 02:25:01,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 179 transitions, 602 flow [2023-11-12 02:25:01,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 179 transitions, 588 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:01,046 INFO L231 Difference]: Finished difference. Result has 192 places, 179 transitions, 476 flow [2023-11-12 02:25:01,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=648, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=476, PETRI_PLACES=192, PETRI_TRANSITIONS=179} [2023-11-12 02:25:01,047 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 28 predicate places. [2023-11-12 02:25:01,047 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 179 transitions, 476 flow [2023-11-12 02:25:01,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 340.38461538461536) internal successors, (4425), 13 states have internal predecessors, (4425), 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) [2023-11-12 02:25:01,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:01,050 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:25:01,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:01,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a664d320-a518-41de-ac40-0f71ddb24644/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:01,256 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-12 02:25:01,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:01,257 INFO L85 PathProgramCache]: Analyzing trace with hash -58148081, now seen corresponding path program 3 times [2023-11-12 02:25:01,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:01,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335739546] [2023-11-12 02:25:01,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:01,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:25:01,283 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:25:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:25:01,308 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:25:01,308 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:25:01,309 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-12 02:25:01,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-12 02:25:01,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-12 02:25:01,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-12 02:25:01,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-12 02:25:01,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-12 02:25:01,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-12 02:25:01,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-12 02:25:01,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-12 02:25:01,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-12 02:25:01,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-12 02:25:01,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-12 02:25:01,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-12 02:25:01,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-12 02:25:01,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-12 02:25:01,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-12 02:25:01,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-12 02:25:01,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-12 02:25:01,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-12 02:25:01,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-12 02:25:01,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-12 02:25:01,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-12 02:25:01,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:25:01,313 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-11-12 02:25:01,314 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:25:01,314 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-12 02:25:01,380 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:25:01,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 507 transitions, 1041 flow [2023-11-12 02:25:01,864 INFO L124 PetriNetUnfolderBase]: 127/1011 cut-off events. [2023-11-12 02:25:01,864 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-12 02:25:01,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 1011 events. 127/1011 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6097 event pairs, 1 based on Foata normal form. 0/837 useless extension candidates. Maximal degree in co-relation 697. Up to 16 conditions per place. [2023-11-12 02:25:01,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 447 places, 507 transitions, 1041 flow [2023-11-12 02:25:01,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 447 places, 507 transitions, 1041 flow [2023-11-12 02:25:01,893 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:25:01,893 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 447 places, 507 transitions, 1041 flow [2023-11-12 02:25:01,893 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 447 places, 507 transitions, 1041 flow [2023-11-12 02:25:01,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 507 transitions, 1041 flow [2023-11-12 02:25:02,104 INFO L124 PetriNetUnfolderBase]: 127/1011 cut-off events. [2023-11-12 02:25:02,104 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-12 02:25:02,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 1011 events. 127/1011 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6097 event pairs, 1 based on Foata normal form. 0/837 useless extension candidates. Maximal degree in co-relation 697. Up to 16 conditions per place. [2023-11-12 02:25:02,206 INFO L119 LiptonReduction]: Number of co-enabled transitions 167640