./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/thread-join-binomial.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/thread-join-binomial.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8591a33fcfae37dbd6f06098afa5fa71145845c6ef04b8957575249085ca656 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:06:53,723 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:06:53,792 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 08:06:53,798 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:06:53,799 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:06:53,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:06:53,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:06:53,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:06:53,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:06:53,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:06:53,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:06:53,831 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:06:53,831 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:06:53,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:06:53,832 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:06:53,833 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:06:53,833 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:06:53,834 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:06:53,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:06:53,835 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:06:53,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:06:53,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:06:53,838 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 08:06:53,838 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:06:53,839 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:06:53,839 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:06:53,839 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:06:53,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:06:53,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:06:53,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:06:53,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:53,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:06:53,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:06:53,842 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:06:53,843 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:06:53,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:06:53,844 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:06:53,844 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:06:53,845 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:06:53,845 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:06:53,846 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:06:53,846 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_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8591a33fcfae37dbd6f06098afa5fa71145845c6ef04b8957575249085ca656 [2023-11-19 08:06:54,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:06:54,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:06:54,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:06:54,155 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:06:54,156 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:06:54,157 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-race-challenges/thread-join-binomial.i [2023-11-19 08:06:57,257 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:06:57,618 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:06:57,621 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/sv-benchmarks/c/pthread-race-challenges/thread-join-binomial.i [2023-11-19 08:06:57,648 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/data/74ede8266/e98694aa5d6941a7ba8420a1ad71fc20/FLAG824553661 [2023-11-19 08:06:57,671 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/data/74ede8266/e98694aa5d6941a7ba8420a1ad71fc20 [2023-11-19 08:06:57,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:06:57,678 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:06:57,680 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:57,680 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:06:57,686 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:06:57,687 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:57" (1/1) ... [2023-11-19 08:06:57,688 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@156bcd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:57, skipping insertion in model container [2023-11-19 08:06:57,688 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:57" (1/1) ... [2023-11-19 08:06:57,747 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:06:58,029 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:06:58,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:58,434 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:06:58,468 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:06:58,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:58,654 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:06:58,662 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:06:58,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:58 WrapperNode [2023-11-19 08:06:58,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:58,664 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:58,664 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:06:58,664 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:06:58,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:58" (1/1) ... [2023-11-19 08:06:58,707 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:58" (1/1) ... [2023-11-19 08:06:58,754 INFO L138 Inliner]: procedures = 268, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2023-11-19 08:06:58,755 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:58,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:06:58,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:06:58,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:06:58,766 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:58" (1/1) ... [2023-11-19 08:06:58,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:58" (1/1) ... [2023-11-19 08:06:58,781 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:58" (1/1) ... [2023-11-19 08:06:58,783 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:58" (1/1) ... [2023-11-19 08:06:58,799 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:58" (1/1) ... [2023-11-19 08:06:58,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:58" (1/1) ... [2023-11-19 08:06:58,807 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:58" (1/1) ... [2023-11-19 08:06:58,812 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:58" (1/1) ... [2023-11-19 08:06:58,827 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:06:58,828 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:06:58,829 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:06:58,829 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:06:58,830 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:58" (1/1) ... [2023-11-19 08:06:58,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:58,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:58,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:58,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:06:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 08:06:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:06:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 08:06:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:06:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:06:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:06:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:06:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:06:58,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 08:06:58,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:06:58,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-19 08:06:58,923 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-19 08:06:58,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:06:58,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:06:58,925 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:06:59,101 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:06:59,103 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:06:59,608 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:06:59,629 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:06:59,630 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:06:59,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:59 BoogieIcfgContainer [2023-11-19 08:06:59,635 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:06:59,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:06:59,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:06:59,643 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:06:59,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:06:57" (1/3) ... [2023-11-19 08:06:59,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48838d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:59, skipping insertion in model container [2023-11-19 08:06:59,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:58" (2/3) ... [2023-11-19 08:06:59,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48838d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:59, skipping insertion in model container [2023-11-19 08:06:59,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:59" (3/3) ... [2023-11-19 08:06:59,647 INFO L112 eAbstractionObserver]: Analyzing ICFG thread-join-binomial.i [2023-11-19 08:06:59,658 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:06:59,676 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:06:59,676 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-19 08:06:59,676 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:06:59,819 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 08:06:59,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 238 transitions, 489 flow [2023-11-19 08:06:59,992 INFO L124 PetriNetUnfolderBase]: 10/203 cut-off events. [2023-11-19 08:06:59,992 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:07:00,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 203 events. 10/203 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 272 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2023-11-19 08:07:00,002 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 238 transitions, 489 flow [2023-11-19 08:07:00,009 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 170 transitions, 347 flow [2023-11-19 08:07:00,013 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:07:00,027 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 170 transitions, 347 flow [2023-11-19 08:07:00,032 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 170 transitions, 347 flow [2023-11-19 08:07:00,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 170 transitions, 347 flow [2023-11-19 08:07:00,096 INFO L124 PetriNetUnfolderBase]: 10/198 cut-off events. [2023-11-19 08:07:00,097 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:07:00,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 198 events. 10/198 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 271 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2023-11-19 08:07:00,103 INFO L119 LiptonReduction]: Number of co-enabled transitions 4620 [2023-11-19 08:07:14,259 INFO L134 LiptonReduction]: Checked pairs total: 17372 [2023-11-19 08:07:14,260 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-11-19 08:07:14,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:07:14,285 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;@4c5eee70, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:07:14,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-19 08:07:14,287 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:07:14,287 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 08:07:14,287 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:07:14,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:14,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 08:07:14,289 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 08:07:14,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:14,295 INFO L85 PathProgramCache]: Analyzing trace with hash 672, now seen corresponding path program 1 times [2023-11-19 08:07:14,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:14,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882961159] [2023-11-19 08:07:14,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:14,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:14,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:14,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882961159] [2023-11-19 08:07:14,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882961159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:14,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:14,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 08:07:14,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664045993] [2023-11-19 08:07:14,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:14,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:07:14,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:14,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:07:14,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:07:14,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 410 [2023-11-19 08:07:14,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 103 flow. Second operand has 2 states, 2 states have (on average 228.5) internal successors, (457), 2 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:14,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:14,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 410 [2023-11-19 08:07:14,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:14,580 INFO L124 PetriNetUnfolderBase]: 8/126 cut-off events. [2023-11-19 08:07:14,580 INFO L125 PetriNetUnfolderBase]: For 4/6 co-relation queries the response was YES. [2023-11-19 08:07:14,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 126 events. 8/126 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 485 event pairs, 8 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 125. Up to 29 conditions per place. [2023-11-19 08:07:14,588 INFO L140 encePairwiseOnDemand]: 401/410 looper letters, 8 selfloop transitions, 0 changer transitions 1/39 dead transitions. [2023-11-19 08:07:14,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 103 flow [2023-11-19 08:07:14,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:07:14,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:07:14,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 474 transitions. [2023-11-19 08:07:14,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5780487804878048 [2023-11-19 08:07:14,616 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 474 transitions. [2023-11-19 08:07:14,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 474 transitions. [2023-11-19 08:07:14,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:14,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 474 transitions. [2023-11-19 08:07:14,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 237.0) internal successors, (474), 2 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:14,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 410.0) internal successors, (1230), 3 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:14,637 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 410.0) internal successors, (1230), 3 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:14,639 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 103 flow. Second operand 2 states and 474 transitions. [2023-11-19 08:07:14,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 103 flow [2023-11-19 08:07:14,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 103 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:07:14,646 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 80 flow [2023-11-19 08:07:14,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=80, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-11-19 08:07:14,653 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -8 predicate places. [2023-11-19 08:07:14,654 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 80 flow [2023-11-19 08:07:14,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 228.5) internal successors, (457), 2 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:14,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:14,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:07:14,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:07:14,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 08:07:14,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:14,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1489641555, now seen corresponding path program 1 times [2023-11-19 08:07:14,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:14,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255883600] [2023-11-19 08:07:14,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:14,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:14,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:14,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255883600] [2023-11-19 08:07:14,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255883600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:14,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:14,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:07:14,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434234545] [2023-11-19 08:07:14,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:14,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:14,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:14,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:14,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:14,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 410 [2023-11-19 08:07:14,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:14,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:14,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 410 [2023-11-19 08:07:14,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:15,024 INFO L124 PetriNetUnfolderBase]: 8/94 cut-off events. [2023-11-19 08:07:15,025 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:07:15,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 94 events. 8/94 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 340 event pairs, 2 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 121. Up to 16 conditions per place. [2023-11-19 08:07:15,027 INFO L140 encePairwiseOnDemand]: 406/410 looper letters, 8 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2023-11-19 08:07:15,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 108 flow [2023-11-19 08:07:15,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:15,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:15,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 675 transitions. [2023-11-19 08:07:15,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487804878048781 [2023-11-19 08:07:15,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 675 transitions. [2023-11-19 08:07:15,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 675 transitions. [2023-11-19 08:07:15,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:15,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 675 transitions. [2023-11-19 08:07:15,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:15,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:15,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:15,048 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 80 flow. Second operand 3 states and 675 transitions. [2023-11-19 08:07:15,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 108 flow [2023-11-19 08:07:15,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:07:15,052 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 98 flow [2023-11-19 08:07:15,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-11-19 08:07:15,054 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2023-11-19 08:07:15,060 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 98 flow [2023-11-19 08:07:15,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:15,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:15,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:07:15,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:07:15,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 08:07:15,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:15,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1472781267, now seen corresponding path program 1 times [2023-11-19 08:07:15,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:15,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591846548] [2023-11-19 08:07:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:15,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:15,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:15,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591846548] [2023-11-19 08:07:15,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591846548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:15,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:15,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:07:15,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330052068] [2023-11-19 08:07:15,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:15,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:07:15,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:15,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:07:15,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:07:15,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 410 [2023-11-19 08:07:15,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:15,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:15,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 410 [2023-11-19 08:07:15,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:16,089 INFO L124 PetriNetUnfolderBase]: 84/331 cut-off events. [2023-11-19 08:07:16,089 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-19 08:07:16,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 331 events. 84/331 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1761 event pairs, 84 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 570. Up to 190 conditions per place. [2023-11-19 08:07:16,095 INFO L140 encePairwiseOnDemand]: 403/410 looper letters, 21 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2023-11-19 08:07:16,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 148 flow [2023-11-19 08:07:16,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:07:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:07:16,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1180 transitions. [2023-11-19 08:07:16,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2023-11-19 08:07:16,101 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1180 transitions. [2023-11-19 08:07:16,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1180 transitions. [2023-11-19 08:07:16,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:16,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1180 transitions. [2023-11-19 08:07:16,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.66666666666666) internal successors, (1180), 6 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:16,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:16,117 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:16,117 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 98 flow. Second operand 6 states and 1180 transitions. [2023-11-19 08:07:16,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 148 flow [2023-11-19 08:07:16,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 142 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:07:16,120 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 112 flow [2023-11-19 08:07:16,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2023-11-19 08:07:16,122 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-11-19 08:07:16,126 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 112 flow [2023-11-19 08:07:16,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:16,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:16,128 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-19 08:07:16,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:07:16,129 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 08:07:16,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:16,131 INFO L85 PathProgramCache]: Analyzing trace with hash 459811018, now seen corresponding path program 1 times [2023-11-19 08:07:16,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:16,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119830962] [2023-11-19 08:07:16,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:16,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:07:16,235 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:07:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:07:16,316 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:07:16,317 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:07:16,318 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-19 08:07:16,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-11-19 08:07:16,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-11-19 08:07:16,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-11-19 08:07:16,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-11-19 08:07:16,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-11-19 08:07:16,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-11-19 08:07:16,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-11-19 08:07:16,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-11-19 08:07:16,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-11-19 08:07:16,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-11-19 08:07:16,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-11-19 08:07:16,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-11-19 08:07:16,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-11-19 08:07:16,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-11-19 08:07:16,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-11-19 08:07:16,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-11-19 08:07:16,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-11-19 08:07:16,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-11-19 08:07:16,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:07:16,328 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 08:07:16,333 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:07:16,333 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 08:07:16,415 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-19 08:07:16,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 315 transitions, 664 flow [2023-11-19 08:07:16,600 INFO L124 PetriNetUnfolderBase]: 46/651 cut-off events. [2023-11-19 08:07:16,601 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 08:07:16,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 651 events. 46/651 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2163 event pairs, 0 based on Foata normal form. 0/551 useless extension candidates. Maximal degree in co-relation 369. Up to 12 conditions per place. [2023-11-19 08:07:16,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 315 transitions, 664 flow [2023-11-19 08:07:16,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 255 transitions, 532 flow [2023-11-19 08:07:16,617 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:07:16,618 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 255 transitions, 532 flow [2023-11-19 08:07:16,619 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 255 transitions, 532 flow [2023-11-19 08:07:16,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 255 transitions, 532 flow [2023-11-19 08:07:16,764 INFO L124 PetriNetUnfolderBase]: 46/651 cut-off events. [2023-11-19 08:07:16,764 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 08:07:16,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 651 events. 46/651 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2164 event pairs, 0 based on Foata normal form. 0/551 useless extension candidates. Maximal degree in co-relation 369. Up to 12 conditions per place. [2023-11-19 08:07:16,811 INFO L119 LiptonReduction]: Number of co-enabled transitions 25758 [2023-11-19 08:07:34,050 INFO L134 LiptonReduction]: Checked pairs total: 117324 [2023-11-19 08:07:34,051 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-11-19 08:07:34,053 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:07:34,054 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;@4c5eee70, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:07:34,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-19 08:07:34,055 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:07:34,055 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 08:07:34,055 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:07:34,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:34,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 08:07:34,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 08:07:34,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:34,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1227, now seen corresponding path program 1 times [2023-11-19 08:07:34,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:34,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056130371] [2023-11-19 08:07:34,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:34,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:34,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:34,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056130371] [2023-11-19 08:07:34,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056130371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:34,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:34,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 08:07:34,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934439371] [2023-11-19 08:07:34,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:34,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:07:34,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:34,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:07:34,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:07:34,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 536 [2023-11-19 08:07:34,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 97 transitions, 216 flow. Second operand has 2 states, 2 states have (on average 297.5) internal successors, (595), 2 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:34,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:34,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 536 [2023-11-19 08:07:34,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:34,571 INFO L124 PetriNetUnfolderBase]: 874/2806 cut-off events. [2023-11-19 08:07:34,571 INFO L125 PetriNetUnfolderBase]: For 132/168 co-relation queries the response was YES. [2023-11-19 08:07:34,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4303 conditions, 2806 events. 874/2806 cut-off events. For 132/168 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 20705 event pairs, 668 based on Foata normal form. 0/2305 useless extension candidates. Maximal degree in co-relation 3373. Up to 1425 conditions per place. [2023-11-19 08:07:34,595 INFO L140 encePairwiseOnDemand]: 531/536 looper letters, 32 selfloop transitions, 0 changer transitions 0/92 dead transitions. [2023-11-19 08:07:34,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 270 flow [2023-11-19 08:07:34,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:07:34,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:07:34,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 631 transitions. [2023-11-19 08:07:34,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5886194029850746 [2023-11-19 08:07:34,598 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 631 transitions. [2023-11-19 08:07:34,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 631 transitions. [2023-11-19 08:07:34,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:34,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 631 transitions. [2023-11-19 08:07:34,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 315.5) internal successors, (631), 2 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:34,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 536.0) internal successors, (1608), 3 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:34,605 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 536.0) internal successors, (1608), 3 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:34,606 INFO L175 Difference]: Start difference. First operand has 97 places, 97 transitions, 216 flow. Second operand 2 states and 631 transitions. [2023-11-19 08:07:34,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 270 flow [2023-11-19 08:07:34,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:07:34,612 INFO L231 Difference]: Finished difference. Result has 93 places, 92 transitions, 206 flow [2023-11-19 08:07:34,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=206, PETRI_PLACES=93, PETRI_TRANSITIONS=92} [2023-11-19 08:07:34,614 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -4 predicate places. [2023-11-19 08:07:34,615 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 92 transitions, 206 flow [2023-11-19 08:07:34,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 297.5) internal successors, (595), 2 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:34,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:34,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:07:34,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:07:34,616 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 08:07:34,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:34,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2109341736, now seen corresponding path program 1 times [2023-11-19 08:07:34,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:34,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292407061] [2023-11-19 08:07:34,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:34,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:34,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:34,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292407061] [2023-11-19 08:07:34,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292407061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:34,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:35,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:07:35,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957268502] [2023-11-19 08:07:35,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:35,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:07:35,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:35,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:07:35,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:07:35,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 536 [2023-11-19 08:07:35,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:35,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:35,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 536 [2023-11-19 08:07:35,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:37,253 INFO L124 PetriNetUnfolderBase]: 5411/11393 cut-off events. [2023-11-19 08:07:37,253 INFO L125 PetriNetUnfolderBase]: For 277/369 co-relation queries the response was YES. [2023-11-19 08:07:37,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19991 conditions, 11393 events. 5411/11393 cut-off events. For 277/369 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 86454 event pairs, 4632 based on Foata normal form. 0/10024 useless extension candidates. Maximal degree in co-relation 19986. Up to 8466 conditions per place. [2023-11-19 08:07:37,339 INFO L140 encePairwiseOnDemand]: 523/536 looper letters, 53 selfloop transitions, 8 changer transitions 0/95 dead transitions. [2023-11-19 08:07:37,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 95 transitions, 334 flow [2023-11-19 08:07:37,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:07:37,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:07:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1596 transitions. [2023-11-19 08:07:37,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962686567164179 [2023-11-19 08:07:37,345 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1596 transitions. [2023-11-19 08:07:37,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1596 transitions. [2023-11-19 08:07:37,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:37,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1596 transitions. [2023-11-19 08:07:37,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:37,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 536.0) internal successors, (3752), 7 states have internal predecessors, (3752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:37,363 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 536.0) internal successors, (3752), 7 states have internal predecessors, (3752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:37,364 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 206 flow. Second operand 6 states and 1596 transitions. [2023-11-19 08:07:37,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 95 transitions, 334 flow [2023-11-19 08:07:37,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:07:37,372 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 258 flow [2023-11-19 08:07:37,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2023-11-19 08:07:37,377 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 0 predicate places. [2023-11-19 08:07:37,377 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 258 flow [2023-11-19 08:07:37,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:37,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:37,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:37,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:07:37,380 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 08:07:37,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:37,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1487433186, now seen corresponding path program 1 times [2023-11-19 08:07:37,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:37,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830150746] [2023-11-19 08:07:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:37,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:37,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:37,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830150746] [2023-11-19 08:07:37,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830150746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:37,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:37,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:07:37,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183079314] [2023-11-19 08:07:37,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:37,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:37,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:37,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:37,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:37,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 536 [2023-11-19 08:07:37,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:37,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:37,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 536 [2023-11-19 08:07:37,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:37,974 INFO L124 PetriNetUnfolderBase]: 874/2845 cut-off events. [2023-11-19 08:07:37,974 INFO L125 PetriNetUnfolderBase]: For 156/188 co-relation queries the response was YES. [2023-11-19 08:07:37,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4835 conditions, 2845 events. 874/2845 cut-off events. For 156/188 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 20891 event pairs, 195 based on Foata normal form. 0/2390 useless extension candidates. Maximal degree in co-relation 4826. Up to 960 conditions per place. [2023-11-19 08:07:38,000 INFO L140 encePairwiseOnDemand]: 532/536 looper letters, 50 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2023-11-19 08:07:38,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 111 transitions, 387 flow [2023-11-19 08:07:38,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:38,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:38,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 924 transitions. [2023-11-19 08:07:38,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5746268656716418 [2023-11-19 08:07:38,007 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 924 transitions. [2023-11-19 08:07:38,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 924 transitions. [2023-11-19 08:07:38,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:38,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 924 transitions. [2023-11-19 08:07:38,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:38,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:38,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:38,019 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 258 flow. Second operand 3 states and 924 transitions. [2023-11-19 08:07:38,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 111 transitions, 387 flow [2023-11-19 08:07:38,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 111 transitions, 381 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-19 08:07:38,039 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 235 flow [2023-11-19 08:07:38,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2023-11-19 08:07:38,042 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 2 predicate places. [2023-11-19 08:07:38,043 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 235 flow [2023-11-19 08:07:38,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:38,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:38,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:38,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:07:38,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 08:07:38,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:38,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1184828826, now seen corresponding path program 1 times [2023-11-19 08:07:38,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:38,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684057807] [2023-11-19 08:07:38,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:38,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:38,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:38,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684057807] [2023-11-19 08:07:38,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684057807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:38,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:38,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:07:38,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708084261] [2023-11-19 08:07:38,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:38,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:38,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:38,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:38,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:38,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 536 [2023-11-19 08:07:38,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:38,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:38,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 536 [2023-11-19 08:07:38,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:38,730 INFO L124 PetriNetUnfolderBase]: 1255/3455 cut-off events. [2023-11-19 08:07:38,731 INFO L125 PetriNetUnfolderBase]: For 800/866 co-relation queries the response was YES. [2023-11-19 08:07:38,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6146 conditions, 3455 events. 1255/3455 cut-off events. For 800/866 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 25416 event pairs, 769 based on Foata normal form. 3/3005 useless extension candidates. Maximal degree in co-relation 6136. Up to 1695 conditions per place. [2023-11-19 08:07:38,753 INFO L140 encePairwiseOnDemand]: 530/536 looper letters, 54 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2023-11-19 08:07:38,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 113 transitions, 413 flow [2023-11-19 08:07:38,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:38,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:38,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 929 transitions. [2023-11-19 08:07:38,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777363184079602 [2023-11-19 08:07:38,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 929 transitions. [2023-11-19 08:07:38,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 929 transitions. [2023-11-19 08:07:38,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:38,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 929 transitions. [2023-11-19 08:07:38,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:38,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:38,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:38,766 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 235 flow. Second operand 3 states and 929 transitions. [2023-11-19 08:07:38,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 113 transitions, 413 flow [2023-11-19 08:07:38,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 113 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:07:38,773 INFO L231 Difference]: Finished difference. Result has 102 places, 95 transitions, 270 flow [2023-11-19 08:07:38,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=102, PETRI_TRANSITIONS=95} [2023-11-19 08:07:38,774 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 5 predicate places. [2023-11-19 08:07:38,774 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 95 transitions, 270 flow [2023-11-19 08:07:38,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:38,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:38,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:38,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:07:38,776 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 08:07:38,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:38,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1199911483, now seen corresponding path program 1 times [2023-11-19 08:07:38,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:38,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442327961] [2023-11-19 08:07:38,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:38,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:38,794 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:07:38,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932022368] [2023-11-19 08:07:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:38,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:38,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:38,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:38,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:07:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:38,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:07:38,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:39,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:39,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:39,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442327961] [2023-11-19 08:07:39,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:07:39,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932022368] [2023-11-19 08:07:39,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932022368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:39,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:39,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:07:39,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486590873] [2023-11-19 08:07:39,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:39,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:39,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:39,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:39,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:39,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 536 [2023-11-19 08:07:39,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 95 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:39,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:39,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 536 [2023-11-19 08:07:39,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:40,033 INFO L124 PetriNetUnfolderBase]: 1048/3140 cut-off events. [2023-11-19 08:07:40,034 INFO L125 PetriNetUnfolderBase]: For 962/1081 co-relation queries the response was YES. [2023-11-19 08:07:40,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5654 conditions, 3140 events. 1048/3140 cut-off events. For 962/1081 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23333 event pairs, 754 based on Foata normal form. 46/2785 useless extension candidates. Maximal degree in co-relation 5642. Up to 1656 conditions per place. [2023-11-19 08:07:40,067 INFO L140 encePairwiseOnDemand]: 533/536 looper letters, 34 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2023-11-19 08:07:40,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 93 transitions, 336 flow [2023-11-19 08:07:40,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:40,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:40,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 868 transitions. [2023-11-19 08:07:40,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398009950248757 [2023-11-19 08:07:40,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 868 transitions. [2023-11-19 08:07:40,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 868 transitions. [2023-11-19 08:07:40,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:40,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 868 transitions. [2023-11-19 08:07:40,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:40,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:40,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:40,080 INFO L175 Difference]: Start difference. First operand has 102 places, 95 transitions, 270 flow. Second operand 3 states and 868 transitions. [2023-11-19 08:07:40,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 93 transitions, 336 flow [2023-11-19 08:07:40,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 93 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:07:40,087 INFO L231 Difference]: Finished difference. Result has 100 places, 93 transitions, 258 flow [2023-11-19 08:07:40,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=100, PETRI_TRANSITIONS=93} [2023-11-19 08:07:40,089 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 3 predicate places. [2023-11-19 08:07:40,089 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 93 transitions, 258 flow [2023-11-19 08:07:40,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:40,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:40,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:40,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:40,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586140ee-cda1-4ce8-877e-224df9ad3b05/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:40,312 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 08:07:40,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:40,312 INFO L85 PathProgramCache]: Analyzing trace with hash 584671112, now seen corresponding path program 1 times [2023-11-19 08:07:40,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:40,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342113346] [2023-11-19 08:07:40,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:40,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:40,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:07:40,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:40,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342113346] [2023-11-19 08:07:40,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342113346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:40,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:40,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:07:40,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426874511] [2023-11-19 08:07:40,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:40,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:07:40,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:40,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:07:40,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:07:41,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 536 [2023-11-19 08:07:41,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 93 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 284.6666666666667) internal successors, (1708), 6 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:41,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:41,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 536 [2023-11-19 08:07:41,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:42,576 INFO L124 PetriNetUnfolderBase]: 1885/4153 cut-off events. [2023-11-19 08:07:42,576 INFO L125 PetriNetUnfolderBase]: For 877/1095 co-relation queries the response was YES. [2023-11-19 08:07:42,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7988 conditions, 4153 events. 1885/4153 cut-off events. For 877/1095 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 27329 event pairs, 593 based on Foata normal form. 82/3668 useless extension candidates. Maximal degree in co-relation 7976. Up to 1341 conditions per place. [2023-11-19 08:07:42,608 INFO L140 encePairwiseOnDemand]: 530/536 looper letters, 123 selfloop transitions, 5 changer transitions 0/180 dead transitions. [2023-11-19 08:07:42,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 180 transitions, 744 flow [2023-11-19 08:07:42,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:07:42,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:07:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1816 transitions. [2023-11-19 08:07:42,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5646766169154229 [2023-11-19 08:07:42,619 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1816 transitions. [2023-11-19 08:07:42,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1816 transitions. [2023-11-19 08:07:42,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:42,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1816 transitions. [2023-11-19 08:07:42,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 302.6666666666667) internal successors, (1816), 6 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:42,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 536.0) internal successors, (3752), 7 states have internal predecessors, (3752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:42,635 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 536.0) internal successors, (3752), 7 states have internal predecessors, (3752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:42,635 INFO L175 Difference]: Start difference. First operand has 100 places, 93 transitions, 258 flow. Second operand 6 states and 1816 transitions. [2023-11-19 08:07:42,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 180 transitions, 744 flow [2023-11-19 08:07:42,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 180 transitions, 743 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:07:42,640 INFO L231 Difference]: Finished difference. Result has 103 places, 92 transitions, 265 flow [2023-11-19 08:07:42,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2023-11-19 08:07:42,642 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 6 predicate places. [2023-11-19 08:07:42,642 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 265 flow [2023-11-19 08:07:42,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 284.6666666666667) internal successors, (1708), 6 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:42,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:42,643 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:42,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:07:42,644 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 08:07:42,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:42,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1031563105, now seen corresponding path program 1 times [2023-11-19 08:07:42,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:42,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203135628] [2023-11-19 08:07:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:42,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 08:07:42,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:42,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203135628] [2023-11-19 08:07:42,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203135628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:42,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:42,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:07:42,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243068330] [2023-11-19 08:07:42,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:42,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:42,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:42,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:42,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:42,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 536 [2023-11-19 08:07:42,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 265 flow. Second operand has 3 states, 3 states have (on average 293.0) internal successors, (879), 3 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:42,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:42,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 536 [2023-11-19 08:07:42,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:43,225 INFO L124 PetriNetUnfolderBase]: 1306/3546 cut-off events. [2023-11-19 08:07:43,225 INFO L125 PetriNetUnfolderBase]: For 1012/1101 co-relation queries the response was YES. [2023-11-19 08:07:43,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6745 conditions, 3546 events. 1306/3546 cut-off events. For 1012/1101 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 26025 event pairs, 868 based on Foata normal form. 6/3087 useless extension candidates. Maximal degree in co-relation 6733. Up to 1966 conditions per place. [2023-11-19 08:07:43,248 INFO L140 encePairwiseOnDemand]: 531/536 looper letters, 57 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2023-11-19 08:07:43,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 113 transitions, 452 flow [2023-11-19 08:07:43,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:43,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:43,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 927 transitions. [2023-11-19 08:07:43,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5764925373134329 [2023-11-19 08:07:43,252 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 927 transitions. [2023-11-19 08:07:43,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 927 transitions. [2023-11-19 08:07:43,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:43,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 927 transitions. [2023-11-19 08:07:43,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:43,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:43,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:43,261 INFO L175 Difference]: Start difference. First operand has 103 places, 92 transitions, 265 flow. Second operand 3 states and 927 transitions. [2023-11-19 08:07:43,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 113 transitions, 452 flow [2023-11-19 08:07:43,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 113 transitions, 440 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 08:07:43,266 INFO L231 Difference]: Finished difference. Result has 101 places, 95 transitions, 288 flow [2023-11-19 08:07:43,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=101, PETRI_TRANSITIONS=95} [2023-11-19 08:07:43,267 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 4 predicate places. [2023-11-19 08:07:43,267 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 95 transitions, 288 flow [2023-11-19 08:07:43,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.0) internal successors, (879), 3 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:43,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:43,268 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:43,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:07:43,268 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 08:07:43,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:43,269 INFO L85 PathProgramCache]: Analyzing trace with hash -741898880, now seen corresponding path program 1 times [2023-11-19 08:07:43,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:43,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110935854] [2023-11-19 08:07:43,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:43,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:43,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:43,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:43,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110935854] [2023-11-19 08:07:43,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110935854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:43,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:43,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:07:43,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942627346] [2023-11-19 08:07:43,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:43,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:43,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:43,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:43,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:43,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 536 [2023-11-19 08:07:43,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 95 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:43,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:43,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 536 [2023-11-19 08:07:43,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:43,811 INFO L124 PetriNetUnfolderBase]: 771/2290 cut-off events. [2023-11-19 08:07:43,811 INFO L125 PetriNetUnfolderBase]: For 623/676 co-relation queries the response was YES. [2023-11-19 08:07:43,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4276 conditions, 2290 events. 771/2290 cut-off events. For 623/676 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 15277 event pairs, 248 based on Foata normal form. 34/1995 useless extension candidates. Maximal degree in co-relation 4263. Up to 718 conditions per place. [2023-11-19 08:07:43,824 INFO L140 encePairwiseOnDemand]: 532/536 looper letters, 51 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2023-11-19 08:07:43,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 113 transitions, 443 flow [2023-11-19 08:07:43,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:43,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:43,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 930 transitions. [2023-11-19 08:07:43,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5783582089552238 [2023-11-19 08:07:43,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 930 transitions. [2023-11-19 08:07:43,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 930 transitions. [2023-11-19 08:07:43,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:43,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 930 transitions. [2023-11-19 08:07:43,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:43,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:43,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:43,855 INFO L175 Difference]: Start difference. First operand has 101 places, 95 transitions, 288 flow. Second operand 3 states and 930 transitions. [2023-11-19 08:07:43,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 113 transitions, 443 flow [2023-11-19 08:07:43,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 113 transitions, 438 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 08:07:43,861 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 279 flow [2023-11-19 08:07:43,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2023-11-19 08:07:43,862 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 5 predicate places. [2023-11-19 08:07:43,862 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 279 flow [2023-11-19 08:07:43,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:43,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:43,863 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2023-11-19 08:07:43,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:07:43,863 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 08:07:43,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:43,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1153386262, now seen corresponding path program 1 times [2023-11-19 08:07:43,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:43,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861868541] [2023-11-19 08:07:43,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:43,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:07:43,919 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:07:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:07:43,955 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:07:43,955 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:07:43,956 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-11-19 08:07:43,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2023-11-19 08:07:43,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2023-11-19 08:07:43,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2023-11-19 08:07:43,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2023-11-19 08:07:43,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2023-11-19 08:07:43,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2023-11-19 08:07:43,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2023-11-19 08:07:43,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2023-11-19 08:07:43,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2023-11-19 08:07:43,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2023-11-19 08:07:43,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2023-11-19 08:07:43,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2023-11-19 08:07:43,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2023-11-19 08:07:43,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2023-11-19 08:07:43,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2023-11-19 08:07:43,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2023-11-19 08:07:43,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2023-11-19 08:07:43,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2023-11-19 08:07:43,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2023-11-19 08:07:43,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2023-11-19 08:07:43,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2023-11-19 08:07:43,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2023-11-19 08:07:43,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 08:07:43,961 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:43,962 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:07:43,962 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 08:07:44,027 INFO L144 ThreadInstanceAdder]: Constructed 15 joinOtherThreadTransitions. [2023-11-19 08:07:44,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 358 places, 394 transitions, 851 flow [2023-11-19 08:07:44,475 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1616] threadEXIT-->L1034-13: Formula: (= (let ((.cse0 (mod |v_threadThread3of3ForFork0_#t~mem11_8| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_threadThread1of3ForFork0_thidvar0_8) InVars {threadThread1of3ForFork0_thidvar0=v_threadThread1of3ForFork0_thidvar0_8, threadThread3of3ForFork0_#t~mem11=|v_threadThread3of3ForFork0_#t~mem11_8|} OutVars{threadThread1of3ForFork0_thidvar0=v_threadThread1of3ForFork0_thidvar0_8, threadThread3of3ForFork0_#t~mem11=|v_threadThread3of3ForFork0_#t~mem11_8|} AuxVars[] AssignedVars[][132], [17#L1043-10true, threadThread1of3ForFork0NotInUse, threadThread2of3ForFork0NotInUse, threadThread3of3ForFork0InUse, 121#L1034-13true]) [2023-11-19 08:07:44,475 INFO L294 olderBase$Statistics]: this new event has 271 ancestors and is cut-off event [2023-11-19 08:07:44,475 INFO L297 olderBase$Statistics]: existing Event has 203 ancestors and is cut-off event [2023-11-19 08:07:44,475 INFO L297 olderBase$Statistics]: existing Event has 271 ancestors and is cut-off event [2023-11-19 08:07:44,476 INFO L297 olderBase$Statistics]: existing Event has 203 ancestors and is cut-off event [2023-11-19 08:07:44,487 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1616] threadEXIT-->L1034-13: Formula: (= (let ((.cse0 (mod |v_threadThread3of3ForFork0_#t~mem11_8| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_threadThread1of3ForFork0_thidvar0_8) InVars {threadThread1of3ForFork0_thidvar0=v_threadThread1of3ForFork0_thidvar0_8, threadThread3of3ForFork0_#t~mem11=|v_threadThread3of3ForFork0_#t~mem11_8|} OutVars{threadThread1of3ForFork0_thidvar0=v_threadThread1of3ForFork0_thidvar0_8, threadThread3of3ForFork0_#t~mem11=|v_threadThread3of3ForFork0_#t~mem11_8|} AuxVars[] AssignedVars[][132], [17#L1043-10true, threadThread1of3ForFork0NotInUse, 44#$Ultimate##0true, threadThread2of3ForFork0InUse, threadThread3of3ForFork0InUse, 121#L1034-13true]) [2023-11-19 08:07:44,487 INFO L294 olderBase$Statistics]: this new event has 288 ancestors and is cut-off event [2023-11-19 08:07:44,487 INFO L297 olderBase$Statistics]: existing Event has 220 ancestors and is cut-off event [2023-11-19 08:07:44,487 INFO L297 olderBase$Statistics]: existing Event has 220 ancestors and is cut-off event [2023-11-19 08:07:44,487 INFO L297 olderBase$Statistics]: existing Event has 152 ancestors and is cut-off event [2023-11-19 08:07:44,559 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1624] threadEXIT-->L1034-13: Formula: (= (let ((.cse0 (mod |v_threadThread1of3ForFork0_#t~mem11_12| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_threadThread3of3ForFork0_thidvar0_12) InVars {threadThread1of3ForFork0_#t~mem11=|v_threadThread1of3ForFork0_#t~mem11_12|, threadThread3of3ForFork0_thidvar0=v_threadThread3of3ForFork0_thidvar0_12} OutVars{threadThread1of3ForFork0_#t~mem11=|v_threadThread1of3ForFork0_#t~mem11_12|, threadThread3of3ForFork0_thidvar0=v_threadThread3of3ForFork0_thidvar0_12} AuxVars[] AssignedVars[][10], [17#L1043-10true, threadThread1of3ForFork0InUse, threadThread2of3ForFork0NotInUse, threadThread3of3ForFork0NotInUse, 92#L1034-13true]) [2023-11-19 08:07:44,560 INFO L294 olderBase$Statistics]: this new event has 271 ancestors and is cut-off event [2023-11-19 08:07:44,560 INFO L297 olderBase$Statistics]: existing Event has 203 ancestors and is cut-off event [2023-11-19 08:07:44,560 INFO L297 olderBase$Statistics]: existing Event has 271 ancestors and is cut-off event [2023-11-19 08:07:44,560 INFO L297 olderBase$Statistics]: existing Event has 203 ancestors and is cut-off event [2023-11-19 08:07:44,658 INFO L124 PetriNetUnfolderBase]: 211/2030 cut-off events. [2023-11-19 08:07:44,658 INFO L125 PetriNetUnfolderBase]: For 127/131 co-relation queries the response was YES. [2023-11-19 08:07:44,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 2030 events. 211/2030 cut-off events. For 127/131 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 11198 event pairs, 3 based on Foata normal form. 3/1711 useless extension candidates. Maximal degree in co-relation 968. Up to 35 conditions per place. [2023-11-19 08:07:44,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 358 places, 394 transitions, 851 flow [2023-11-19 08:07:44,722 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 308 places, 332 transitions, 709 flow [2023-11-19 08:07:44,727 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:07:44,727 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 308 places, 332 transitions, 709 flow [2023-11-19 08:07:44,728 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 308 places, 332 transitions, 709 flow [2023-11-19 08:07:44,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 332 transitions, 709 flow