./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 a8bcba962b15df67a0e136eef2e702f216cc120b7626a7b8dc8877f6ecaf3765 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-28 18:04:01,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-28 18:04:01,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-28 18:04:01,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-28 18:04:01,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-28 18:04:01,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-28 18:04:01,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-28 18:04:01,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-28 18:04:01,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-28 18:04:01,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-28 18:04:01,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-28 18:04:01,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-28 18:04:01,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-28 18:04:01,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-28 18:04:01,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-28 18:04:01,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-28 18:04:01,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-28 18:04:01,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-28 18:04:01,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-28 18:04:01,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-28 18:04:01,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-28 18:04:01,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-28 18:04:01,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-28 18:04:01,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-28 18:04:01,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-28 18:04:01,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-28 18:04:01,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-28 18:04:01,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-28 18:04:01,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-28 18:04:01,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-28 18:04:01,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-28 18:04:01,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-28 18:04:01,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-28 18:04:01,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-28 18:04:01,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-28 18:04:01,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-28 18:04:01,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-28 18:04:01,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-28 18:04:01,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-28 18:04:01,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-28 18:04:01,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-28 18:04:01,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-28 18:04:01,946 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-28 18:04:01,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-28 18:04:01,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-28 18:04:01,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-28 18:04:01,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-28 18:04:01,949 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-28 18:04:01,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-28 18:04:01,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-28 18:04:01,949 INFO L138 SettingsManager]: * Use SBE=true [2023-08-28 18:04:01,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-28 18:04:01,950 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-28 18:04:01,950 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-28 18:04:01,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-28 18:04:01,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-28 18:04:01,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-28 18:04:01,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-28 18:04:01,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-28 18:04:01,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-28 18:04:01,951 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-28 18:04:01,951 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-28 18:04:01,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-28 18:04:01,951 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-28 18:04:01,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-28 18:04:01,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-28 18:04:01,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-28 18:04:01,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-28 18:04:01,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 18:04:01,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-28 18:04:01,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-28 18:04:01,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-28 18:04:01,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-28 18:04:01,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-28 18:04:01,953 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-28 18:04:01,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-28 18:04:01,953 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-28 18:04:01,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-28 18:04:01,953 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-28 18:04:01,954 INFO L138 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8bcba962b15df67a0e136eef2e702f216cc120b7626a7b8dc8877f6ecaf3765 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-28 18:04:02,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-28 18:04:02,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-28 18:04:02,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-28 18:04:02,229 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-28 18:04:02,230 INFO L275 PluginConnector]: CDTParser initialized [2023-08-28 18:04:02,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i [2023-08-28 18:04:03,359 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-28 18:04:03,559 INFO L351 CDTParser]: Found 1 translation units. [2023-08-28 18:04:03,560 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i [2023-08-28 18:04:03,598 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa454b726/c348ca73b1c34d98950818a942a9ec40/FLAG6a66d7a60 [2023-08-28 18:04:03,615 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa454b726/c348ca73b1c34d98950818a942a9ec40 [2023-08-28 18:04:03,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-28 18:04:03,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-28 18:04:03,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-28 18:04:03,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-28 18:04:03,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-28 18:04:03,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:04:03" (1/1) ... [2023-08-28 18:04:03,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d7dd30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:03, skipping insertion in model container [2023-08-28 18:04:03,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:04:03" (1/1) ... [2023-08-28 18:04:03,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-28 18:04:03,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-28 18:04:03,937 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i[30726,30739] [2023-08-28 18:04:03,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 18:04:03,967 INFO L203 MainTranslator]: Completed pre-run [2023-08-28 18:04:04,025 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i[30726,30739] [2023-08-28 18:04:04,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 18:04:04,061 INFO L208 MainTranslator]: Completed translation [2023-08-28 18:04:04,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:04 WrapperNode [2023-08-28 18:04:04,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-28 18:04:04,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-28 18:04:04,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-28 18:04:04,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-28 18:04:04,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:04" (1/1) ... [2023-08-28 18:04:04,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:04" (1/1) ... [2023-08-28 18:04:04,108 INFO L138 Inliner]: procedures = 171, calls = 26, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 155 [2023-08-28 18:04:04,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-28 18:04:04,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-28 18:04:04,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-28 18:04:04,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-28 18:04:04,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:04" (1/1) ... [2023-08-28 18:04:04,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:04" (1/1) ... [2023-08-28 18:04:04,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:04" (1/1) ... [2023-08-28 18:04:04,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:04" (1/1) ... [2023-08-28 18:04:04,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:04" (1/1) ... [2023-08-28 18:04:04,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:04" (1/1) ... [2023-08-28 18:04:04,135 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:04" (1/1) ... [2023-08-28 18:04:04,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:04" (1/1) ... [2023-08-28 18:04:04,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-28 18:04:04,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-28 18:04:04,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-28 18:04:04,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-28 18:04:04,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:04" (1/1) ... [2023-08-28 18:04:04,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 18:04:04,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 18:04:04,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-28 18:04:04,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-28 18:04:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-28 18:04:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-28 18:04:04,215 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-28 18:04:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-28 18:04:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-28 18:04:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-28 18:04:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-28 18:04:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-28 18:04:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-28 18:04:04,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-28 18:04:04,218 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-28 18:04:04,378 INFO L236 CfgBuilder]: Building ICFG [2023-08-28 18:04:04,380 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-28 18:04:04,660 INFO L277 CfgBuilder]: Performing block encoding [2023-08-28 18:04:04,760 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-28 18:04:04,761 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-28 18:04:04,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:04:04 BoogieIcfgContainer [2023-08-28 18:04:04,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-28 18:04:04,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-28 18:04:04,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-28 18:04:04,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-28 18:04:04,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 06:04:03" (1/3) ... [2023-08-28 18:04:04,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127965c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:04:04, skipping insertion in model container [2023-08-28 18:04:04,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:04" (2/3) ... [2023-08-28 18:04:04,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127965c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:04:04, skipping insertion in model container [2023-08-28 18:04:04,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:04:04" (3/3) ... [2023-08-28 18:04:04,770 INFO L112 eAbstractionObserver]: Analyzing ICFG 37_stack_lock_p0_vs_concur.i [2023-08-28 18:04:04,776 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-28 18:04:04,784 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-28 18:04:04,784 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-08-28 18:04:04,784 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-28 18:04:04,855 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:04:04,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 126 transitions, 257 flow [2023-08-28 18:04:04,967 INFO L130 PetriNetUnfolder]: 7/136 cut-off events. [2023-08-28 18:04:04,968 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:04,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 136 events. 7/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 131 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-08-28 18:04:04,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 126 transitions, 257 flow [2023-08-28 18:04:04,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 126 transitions, 257 flow [2023-08-28 18:04:04,982 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:04:04,991 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 126 transitions, 257 flow [2023-08-28 18:04:04,994 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 126 transitions, 257 flow [2023-08-28 18:04:04,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 126 transitions, 257 flow [2023-08-28 18:04:05,038 INFO L130 PetriNetUnfolder]: 7/136 cut-off events. [2023-08-28 18:04:05,039 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:05,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 136 events. 7/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 131 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-08-28 18:04:05,041 INFO L119 LiptonReduction]: Number of co-enabled transitions 2548 [2023-08-28 18:04:07,189 INFO L134 LiptonReduction]: Checked pairs total: 4685 [2023-08-28 18:04:07,190 INFO L136 LiptonReduction]: Total number of compositions: 175 [2023-08-28 18:04:07,200 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:04:07,205 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=LoopsAndPotentialCycles, 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;@6c7cb48e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:04:07,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-08-28 18:04:07,208 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-28 18:04:07,208 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:07,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:07,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-28 18:04:07,209 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err18ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-08-28 18:04:07,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:07,213 INFO L85 PathProgramCache]: Analyzing trace with hash 662601486, now seen corresponding path program 1 times [2023-08-28 18:04:07,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:07,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707186678] [2023-08-28 18:04:07,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:07,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:07,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:04:07,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:07,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707186678] [2023-08-28 18:04:07,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707186678] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:07,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:07,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:04:07,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607152843] [2023-08-28 18:04:07,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:07,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:04:07,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:07,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:04:07,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:04:07,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 301 [2023-08-28 18:04:07,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 79 flow. Second operand has 2 states, 2 states have (on average 107.0) internal successors, (214), 2 states have internal predecessors, (214), 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) [2023-08-28 18:04:07,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:07,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 301 [2023-08-28 18:04:07,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:07,432 INFO L130 PetriNetUnfolder]: 18/51 cut-off events. [2023-08-28 18:04:07,432 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:07,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 51 events. 18/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 15 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 88. Up to 47 conditions per place. [2023-08-28 18:04:07,434 INFO L137 encePairwiseOnDemand]: 279/301 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2023-08-28 18:04:07,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 59 flow [2023-08-28 18:04:07,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:04:07,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:04:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 244 transitions. [2023-08-28 18:04:07,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053156146179402 [2023-08-28 18:04:07,444 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 244 transitions. [2023-08-28 18:04:07,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 244 transitions. [2023-08-28 18:04:07,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:07,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 244 transitions. [2023-08-28 18:04:07,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 122.0) internal successors, (244), 2 states have internal predecessors, (244), 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) [2023-08-28 18:04:07,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 301.0) internal successors, (903), 3 states have internal predecessors, (903), 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) [2023-08-28 18:04:07,454 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 301.0) internal successors, (903), 3 states have internal predecessors, (903), 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) [2023-08-28 18:04:07,455 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 79 flow. Second operand 2 states and 244 transitions. [2023-08-28 18:04:07,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 59 flow [2023-08-28 18:04:07,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 15 transitions, 59 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 18:04:07,458 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-28 18:04:07,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-28 18:04:07,462 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -20 predicate places. [2023-08-28 18:04:07,462 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-28 18:04:07,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 107.0) internal successors, (214), 2 states have internal predecessors, (214), 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) [2023-08-28 18:04:07,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err13ASSERT_VIOLATIONDATA_RACE (37 of 38 remaining) [2023-08-28 18:04:07,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err14ASSERT_VIOLATIONDATA_RACE (36 of 38 remaining) [2023-08-28 18:04:07,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err18ASSERT_VIOLATIONDATA_RACE (35 of 38 remaining) [2023-08-28 18:04:07,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (34 of 38 remaining) [2023-08-28 18:04:07,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err15ASSERT_VIOLATIONDATA_RACE (33 of 38 remaining) [2023-08-28 18:04:07,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err16ASSERT_VIOLATIONDATA_RACE (32 of 38 remaining) [2023-08-28 18:04:07,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err12ASSERT_VIOLATIONDATA_RACE (31 of 38 remaining) [2023-08-28 18:04:07,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err17ASSERT_VIOLATIONDATA_RACE (30 of 38 remaining) [2023-08-28 18:04:07,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (29 of 38 remaining) [2023-08-28 18:04:07,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err11ASSERT_VIOLATIONDATA_RACE (28 of 38 remaining) [2023-08-28 18:04:07,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 38 remaining) [2023-08-28 18:04:07,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err14ASSERT_VIOLATIONDATA_RACE (26 of 38 remaining) [2023-08-28 18:04:07,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 38 remaining) [2023-08-28 18:04:07,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 38 remaining) [2023-08-28 18:04:07,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (23 of 38 remaining) [2023-08-28 18:04:07,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 38 remaining) [2023-08-28 18:04:07,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err12ASSERT_VIOLATIONDATA_RACE (21 of 38 remaining) [2023-08-28 18:04:07,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 38 remaining) [2023-08-28 18:04:07,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err13ASSERT_VIOLATIONDATA_RACE (19 of 38 remaining) [2023-08-28 18:04:07,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 38 remaining) [2023-08-28 18:04:07,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err17ASSERT_VIOLATIONDATA_RACE (17 of 38 remaining) [2023-08-28 18:04:07,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 38 remaining) [2023-08-28 18:04:07,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 38 remaining) [2023-08-28 18:04:07,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (14 of 38 remaining) [2023-08-28 18:04:07,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (13 of 38 remaining) [2023-08-28 18:04:07,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err16ASSERT_VIOLATIONDATA_RACE (12 of 38 remaining) [2023-08-28 18:04:07,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (11 of 38 remaining) [2023-08-28 18:04:07,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err10ASSERT_VIOLATIONDATA_RACE (10 of 38 remaining) [2023-08-28 18:04:07,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (9 of 38 remaining) [2023-08-28 18:04:07,470 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 38 remaining) [2023-08-28 18:04:07,470 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 38 remaining) [2023-08-28 18:04:07,470 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err15ASSERT_VIOLATIONDATA_RACE (6 of 38 remaining) [2023-08-28 18:04:07,470 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 38 remaining) [2023-08-28 18:04:07,470 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 38 remaining) [2023-08-28 18:04:07,470 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 38 remaining) [2023-08-28 18:04:07,471 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err18ASSERT_VIOLATIONDATA_RACE (2 of 38 remaining) [2023-08-28 18:04:07,471 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 38 remaining) [2023-08-28 18:04:07,471 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 38 remaining) [2023-08-28 18:04:07,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-28 18:04:07,471 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:04:07,473 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:04:07,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 126 transitions, 257 flow [2023-08-28 18:04:07,487 INFO L130 PetriNetUnfolder]: 7/136 cut-off events. [2023-08-28 18:04:07,487 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:07,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 136 events. 7/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 131 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-08-28 18:04:07,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 126 transitions, 257 flow [2023-08-28 18:04:07,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 126 transitions, 257 flow [2023-08-28 18:04:07,489 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:04:07,489 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 126 transitions, 257 flow [2023-08-28 18:04:07,490 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 126 transitions, 257 flow [2023-08-28 18:04:07,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 126 transitions, 257 flow [2023-08-28 18:04:07,499 INFO L130 PetriNetUnfolder]: 7/136 cut-off events. [2023-08-28 18:04:07,500 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:07,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 136 events. 7/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 131 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-08-28 18:04:07,502 INFO L119 LiptonReduction]: Number of co-enabled transitions 2548 [2023-08-28 18:04:09,644 INFO L134 LiptonReduction]: Checked pairs total: 4627 [2023-08-28 18:04:09,644 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-08-28 18:04:09,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:04:09,647 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=LoopsAndPotentialCycles, 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;@6c7cb48e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:04:09,647 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:04:09,648 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-08-28 18:04:09,649 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:09,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:09,649 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-28 18:04:09,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:04:09,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:09,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2886391, now seen corresponding path program 1 times [2023-08-28 18:04:09,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:09,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066866121] [2023-08-28 18:04:09,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:09,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:04:09,665 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:04:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:04:09,686 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:04:09,687 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:04:09,687 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:04:09,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-28 18:04:09,687 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:04:09,688 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:04:09,688 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:04:09,688 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-28 18:04:09,715 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:04:09,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 225 transitions, 462 flow [2023-08-28 18:04:09,740 INFO L130 PetriNetUnfolder]: 13/247 cut-off events. [2023-08-28 18:04:09,741 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:04:09,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 247 events. 13/247 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 545 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 208. Up to 6 conditions per place. [2023-08-28 18:04:09,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 225 transitions, 462 flow [2023-08-28 18:04:09,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 225 transitions, 462 flow [2023-08-28 18:04:09,746 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:04:09,746 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 225 transitions, 462 flow [2023-08-28 18:04:09,746 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 225 transitions, 462 flow [2023-08-28 18:04:09,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 225 transitions, 462 flow [2023-08-28 18:04:09,766 INFO L130 PetriNetUnfolder]: 13/247 cut-off events. [2023-08-28 18:04:09,767 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:04:09,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 247 events. 13/247 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 545 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 208. Up to 6 conditions per place. [2023-08-28 18:04:09,795 INFO L119 LiptonReduction]: Number of co-enabled transitions 24500 [2023-08-28 18:04:10,959 INFO L134 LiptonReduction]: Checked pairs total: 133144 [2023-08-28 18:04:10,960 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-28 18:04:10,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:04:10,962 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=LoopsAndPotentialCycles, 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;@6c7cb48e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:04:10,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2023-08-28 18:04:10,963 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-08-28 18:04:10,963 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-28 18:04:10,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:10,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:10,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:04:10,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:10,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1377817976, now seen corresponding path program 1 times [2023-08-28 18:04:10,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:10,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400391497] [2023-08-28 18:04:10,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:10,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:11,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:04:11,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:11,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400391497] [2023-08-28 18:04:11,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400391497] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:11,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:11,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:04:11,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139975717] [2023-08-28 18:04:11,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:11,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:04:11,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:11,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:04:11,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:04:11,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 331 [2023-08-28 18:04:11,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 148 transitions, 308 flow. Second operand has 2 states, 2 states have (on average 187.5) internal successors, (375), 2 states have internal predecessors, (375), 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) [2023-08-28 18:04:11,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:11,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 331 [2023-08-28 18:04:11,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:11,250 INFO L130 PetriNetUnfolder]: 968/3049 cut-off events. [2023-08-28 18:04:11,251 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-08-28 18:04:11,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4626 conditions, 3049 events. 968/3049 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 23697 event pairs, 832 based on Foata normal form. 103/2831 useless extension candidates. Maximal degree in co-relation 2757. Up to 1511 conditions per place. [2023-08-28 18:04:11,266 INFO L137 encePairwiseOnDemand]: 305/331 looper letters, 36 selfloop transitions, 0 changer transitions 0/121 dead transitions. [2023-08-28 18:04:11,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 121 transitions, 326 flow [2023-08-28 18:04:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:04:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:04:11,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 432 transitions. [2023-08-28 18:04:11,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6525679758308157 [2023-08-28 18:04:11,271 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 432 transitions. [2023-08-28 18:04:11,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 432 transitions. [2023-08-28 18:04:11,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:11,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 432 transitions. [2023-08-28 18:04:11,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 216.0) internal successors, (432), 2 states have internal predecessors, (432), 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) [2023-08-28 18:04:11,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 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) [2023-08-28 18:04:11,306 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 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) [2023-08-28 18:04:11,306 INFO L175 Difference]: Start difference. First operand has 146 places, 148 transitions, 308 flow. Second operand 2 states and 432 transitions. [2023-08-28 18:04:11,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 121 transitions, 326 flow [2023-08-28 18:04:11,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 121 transitions, 324 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-28 18:04:11,309 INFO L231 Difference]: Finished difference. Result has 123 places, 121 transitions, 252 flow [2023-08-28 18:04:11,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=252, PETRI_PLACES=123, PETRI_TRANSITIONS=121} [2023-08-28 18:04:11,310 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, -23 predicate places. [2023-08-28 18:04:11,310 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 121 transitions, 252 flow [2023-08-28 18:04:11,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 187.5) internal successors, (375), 2 states have internal predecessors, (375), 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) [2023-08-28 18:04:11,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:11,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:11,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-28 18:04:11,310 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:04:11,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:11,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1464203489, now seen corresponding path program 1 times [2023-08-28 18:04:11,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:11,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091033385] [2023-08-28 18:04:11,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:11,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:04:11,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:11,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091033385] [2023-08-28 18:04:11,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091033385] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:11,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:11,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-28 18:04:11,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946646101] [2023-08-28 18:04:11,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:11,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-28 18:04:11,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:11,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-28 18:04:11,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-28 18:04:11,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 331 [2023-08-28 18:04:11,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 121 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 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) [2023-08-28 18:04:11,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:11,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 331 [2023-08-28 18:04:11,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:12,718 INFO L130 PetriNetUnfolder]: 4153/10219 cut-off events. [2023-08-28 18:04:12,718 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-08-28 18:04:12,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17108 conditions, 10219 events. 4153/10219 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 92248 event pairs, 865 based on Foata normal form. 0/9396 useless extension candidates. Maximal degree in co-relation 17103. Up to 3061 conditions per place. [2023-08-28 18:04:12,767 INFO L137 encePairwiseOnDemand]: 304/331 looper letters, 146 selfloop transitions, 26 changer transitions 0/234 dead transitions. [2023-08-28 18:04:12,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 234 transitions, 842 flow [2023-08-28 18:04:12,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-28 18:04:12,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-28 18:04:12,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1124 transitions. [2023-08-28 18:04:12,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5659617321248741 [2023-08-28 18:04:12,770 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1124 transitions. [2023-08-28 18:04:12,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1124 transitions. [2023-08-28 18:04:12,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:12,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1124 transitions. [2023-08-28 18:04:12,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 187.33333333333334) internal successors, (1124), 6 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:04:12,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 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) [2023-08-28 18:04:12,777 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 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) [2023-08-28 18:04:12,777 INFO L175 Difference]: Start difference. First operand has 123 places, 121 transitions, 252 flow. Second operand 6 states and 1124 transitions. [2023-08-28 18:04:12,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 234 transitions, 842 flow [2023-08-28 18:04:12,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 234 transitions, 842 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 18:04:12,781 INFO L231 Difference]: Finished difference. Result has 133 places, 146 transitions, 458 flow [2023-08-28 18:04:12,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=458, PETRI_PLACES=133, PETRI_TRANSITIONS=146} [2023-08-28 18:04:12,784 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, -13 predicate places. [2023-08-28 18:04:12,784 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 146 transitions, 458 flow [2023-08-28 18:04:12,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 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) [2023-08-28 18:04:12,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:12,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:12,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-28 18:04:12,786 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err18ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:04:12,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:12,787 INFO L85 PathProgramCache]: Analyzing trace with hash 404094170, now seen corresponding path program 1 times [2023-08-28 18:04:12,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:12,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601248944] [2023-08-28 18:04:12,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:12,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:04:12,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:12,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601248944] [2023-08-28 18:04:12,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601248944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:12,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:12,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-28 18:04:12,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839388227] [2023-08-28 18:04:12,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:12,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:04:12,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:12,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:04:12,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:04:12,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2023-08-28 18:04:12,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 146 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 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) [2023-08-28 18:04:12,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:12,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2023-08-28 18:04:12,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:13,426 INFO L130 PetriNetUnfolder]: 1852/6364 cut-off events. [2023-08-28 18:04:13,427 INFO L131 PetriNetUnfolder]: For 604/669 co-relation queries the response was YES. [2023-08-28 18:04:13,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10745 conditions, 6364 events. 1852/6364 cut-off events. For 604/669 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 58816 event pairs, 1412 based on Foata normal form. 97/5888 useless extension candidates. Maximal degree in co-relation 10735. Up to 2908 conditions per place. [2023-08-28 18:04:13,461 INFO L137 encePairwiseOnDemand]: 329/331 looper letters, 59 selfloop transitions, 2 changer transitions 0/164 dead transitions. [2023-08-28 18:04:13,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 164 transitions, 627 flow [2023-08-28 18:04:13,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:04:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:04:13,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 606 transitions. [2023-08-28 18:04:13,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6102719033232629 [2023-08-28 18:04:13,464 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 606 transitions. [2023-08-28 18:04:13,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 606 transitions. [2023-08-28 18:04:13,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:13,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 606 transitions. [2023-08-28 18:04:13,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 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) [2023-08-28 18:04:13,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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) [2023-08-28 18:04:13,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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) [2023-08-28 18:04:13,467 INFO L175 Difference]: Start difference. First operand has 133 places, 146 transitions, 458 flow. Second operand 3 states and 606 transitions. [2023-08-28 18:04:13,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 164 transitions, 627 flow [2023-08-28 18:04:13,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 164 transitions, 627 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 18:04:13,475 INFO L231 Difference]: Finished difference. Result has 135 places, 145 transitions, 460 flow [2023-08-28 18:04:13,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=460, PETRI_PLACES=135, PETRI_TRANSITIONS=145} [2023-08-28 18:04:13,475 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, -11 predicate places. [2023-08-28 18:04:13,476 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 145 transitions, 460 flow [2023-08-28 18:04:13,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 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) [2023-08-28 18:04:13,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:13,476 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:13,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-28 18:04:13,477 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:04:13,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:13,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1772739558, now seen corresponding path program 1 times [2023-08-28 18:04:13,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:13,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282733491] [2023-08-28 18:04:13,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:13,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:04:13,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:13,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282733491] [2023-08-28 18:04:13,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282733491] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:13,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:13,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-28 18:04:13,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397539958] [2023-08-28 18:04:13,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:13,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-28 18:04:13,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:13,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-28 18:04:13,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-28 18:04:13,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 331 [2023-08-28 18:04:13,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 145 transitions, 460 flow. Second operand has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 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) [2023-08-28 18:04:13,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:13,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 331 [2023-08-28 18:04:13,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:15,357 INFO L130 PetriNetUnfolder]: 5723/13966 cut-off events. [2023-08-28 18:04:15,357 INFO L131 PetriNetUnfolder]: For 2476/2752 co-relation queries the response was YES. [2023-08-28 18:04:15,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27217 conditions, 13966 events. 5723/13966 cut-off events. For 2476/2752 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 131923 event pairs, 946 based on Foata normal form. 134/13503 useless extension candidates. Maximal degree in co-relation 27206. Up to 5431 conditions per place. [2023-08-28 18:04:15,423 INFO L137 encePairwiseOnDemand]: 304/331 looper letters, 156 selfloop transitions, 26 changer transitions 0/262 dead transitions. [2023-08-28 18:04:15,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 262 transitions, 1146 flow [2023-08-28 18:04:15,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-28 18:04:15,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-28 18:04:15,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1115 transitions. [2023-08-28 18:04:15,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614300100704934 [2023-08-28 18:04:15,426 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1115 transitions. [2023-08-28 18:04:15,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1115 transitions. [2023-08-28 18:04:15,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:15,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1115 transitions. [2023-08-28 18:04:15,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 185.83333333333334) internal successors, (1115), 6 states have internal predecessors, (1115), 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) [2023-08-28 18:04:15,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 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) [2023-08-28 18:04:15,431 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 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) [2023-08-28 18:04:15,431 INFO L175 Difference]: Start difference. First operand has 135 places, 145 transitions, 460 flow. Second operand 6 states and 1115 transitions. [2023-08-28 18:04:15,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 262 transitions, 1146 flow [2023-08-28 18:04:15,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 262 transitions, 1136 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-28 18:04:15,445 INFO L231 Difference]: Finished difference. Result has 144 places, 170 transitions, 664 flow [2023-08-28 18:04:15,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=664, PETRI_PLACES=144, PETRI_TRANSITIONS=170} [2023-08-28 18:04:15,446 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, -2 predicate places. [2023-08-28 18:04:15,446 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 170 transitions, 664 flow [2023-08-28 18:04:15,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 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) [2023-08-28 18:04:15,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:15,447 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:15,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-28 18:04:15,447 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err18ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:04:15,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:15,447 INFO L85 PathProgramCache]: Analyzing trace with hash 775341233, now seen corresponding path program 1 times [2023-08-28 18:04:15,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:15,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536944467] [2023-08-28 18:04:15,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:15,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:04:15,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:15,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536944467] [2023-08-28 18:04:15,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536944467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:15,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:15,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-28 18:04:15,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096751958] [2023-08-28 18:04:15,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:15,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-28 18:04:15,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:15,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-28 18:04:15,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-28 18:04:15,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 331 [2023-08-28 18:04:15,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 170 transitions, 664 flow. Second operand has 5 states, 5 states have (on average 177.2) internal successors, (886), 5 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) [2023-08-28 18:04:15,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:15,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 331 [2023-08-28 18:04:15,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:16,750 INFO L130 PetriNetUnfolder]: 3335/11510 cut-off events. [2023-08-28 18:04:16,756 INFO L131 PetriNetUnfolder]: For 1907/2064 co-relation queries the response was YES. [2023-08-28 18:04:16,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23152 conditions, 11510 events. 3335/11510 cut-off events. For 1907/2064 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 114675 event pairs, 919 based on Foata normal form. 69/10897 useless extension candidates. Maximal degree in co-relation 23137. Up to 5219 conditions per place. [2023-08-28 18:04:16,808 INFO L137 encePairwiseOnDemand]: 323/331 looper letters, 89 selfloop transitions, 16 changer transitions 0/224 dead transitions. [2023-08-28 18:04:16,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 224 transitions, 1054 flow [2023-08-28 18:04:16,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-28 18:04:16,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-28 18:04:16,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1133 transitions. [2023-08-28 18:04:16,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5704934541792548 [2023-08-28 18:04:16,811 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1133 transitions. [2023-08-28 18:04:16,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1133 transitions. [2023-08-28 18:04:16,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:16,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1133 transitions. [2023-08-28 18:04:16,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.83333333333334) internal successors, (1133), 6 states have internal predecessors, (1133), 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) [2023-08-28 18:04:16,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 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) [2023-08-28 18:04:16,815 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 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) [2023-08-28 18:04:16,815 INFO L175 Difference]: Start difference. First operand has 144 places, 170 transitions, 664 flow. Second operand 6 states and 1133 transitions. [2023-08-28 18:04:16,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 224 transitions, 1054 flow [2023-08-28 18:04:16,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 224 transitions, 1054 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 18:04:16,830 INFO L231 Difference]: Finished difference. Result has 153 places, 186 transitions, 819 flow [2023-08-28 18:04:16,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=819, PETRI_PLACES=153, PETRI_TRANSITIONS=186} [2023-08-28 18:04:16,831 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 7 predicate places. [2023-08-28 18:04:16,831 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 186 transitions, 819 flow [2023-08-28 18:04:16,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.2) internal successors, (886), 5 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) [2023-08-28 18:04:16,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:16,832 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:16,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-28 18:04:16,832 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:04:16,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:16,832 INFO L85 PathProgramCache]: Analyzing trace with hash -2083651241, now seen corresponding path program 1 times [2023-08-28 18:04:16,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:16,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847488673] [2023-08-28 18:04:16,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:16,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 18:04:17,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:17,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847488673] [2023-08-28 18:04:17,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847488673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:17,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:17,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:04:17,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091578542] [2023-08-28 18:04:17,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:17,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:04:17,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:17,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:04:17,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:04:17,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:04:17,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 186 transitions, 819 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:04:17,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:17,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:04:17,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:20,365 INFO L130 PetriNetUnfolder]: 9454/22766 cut-off events. [2023-08-28 18:04:20,365 INFO L131 PetriNetUnfolder]: For 20973/21595 co-relation queries the response was YES. [2023-08-28 18:04:20,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60251 conditions, 22766 events. 9454/22766 cut-off events. For 20973/21595 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 224783 event pairs, 1742 based on Foata normal form. 489/22169 useless extension candidates. Maximal degree in co-relation 60231. Up to 9889 conditions per place. [2023-08-28 18:04:20,503 INFO L137 encePairwiseOnDemand]: 311/331 looper letters, 212 selfloop transitions, 50 changer transitions 0/341 dead transitions. [2023-08-28 18:04:20,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 341 transitions, 2063 flow [2023-08-28 18:04:20,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-28 18:04:20,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-28 18:04:20,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1845 transitions. [2023-08-28 18:04:20,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067289206262016 [2023-08-28 18:04:20,507 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1845 transitions. [2023-08-28 18:04:20,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1845 transitions. [2023-08-28 18:04:20,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:20,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1845 transitions. [2023-08-28 18:04:20,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 167.72727272727272) internal successors, (1845), 11 states have internal predecessors, (1845), 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) [2023-08-28 18:04:20,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 331.0) internal successors, (3972), 12 states have internal predecessors, (3972), 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) [2023-08-28 18:04:20,514 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 331.0) internal successors, (3972), 12 states have internal predecessors, (3972), 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) [2023-08-28 18:04:20,514 INFO L175 Difference]: Start difference. First operand has 153 places, 186 transitions, 819 flow. Second operand 11 states and 1845 transitions. [2023-08-28 18:04:20,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 341 transitions, 2063 flow [2023-08-28 18:04:20,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 341 transitions, 2053 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-28 18:04:20,554 INFO L231 Difference]: Finished difference. Result has 171 places, 232 transitions, 1385 flow [2023-08-28 18:04:20,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1385, PETRI_PLACES=171, PETRI_TRANSITIONS=232} [2023-08-28 18:04:20,556 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 25 predicate places. [2023-08-28 18:04:20,556 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 232 transitions, 1385 flow [2023-08-28 18:04:20,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:04:20,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:20,557 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:20,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-28 18:04:20,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:04:20,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:20,557 INFO L85 PathProgramCache]: Analyzing trace with hash -579010043, now seen corresponding path program 2 times [2023-08-28 18:04:20,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:20,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251798948] [2023-08-28 18:04:20,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:20,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:20,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:04:20,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:20,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251798948] [2023-08-28 18:04:20,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251798948] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:20,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:20,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:04:20,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978646546] [2023-08-28 18:04:20,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:20,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:04:20,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:20,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:04:20,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:04:21,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:04:21,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 232 transitions, 1385 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:04:21,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:21,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:04:21,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:24,176 INFO L130 PetriNetUnfolder]: 11920/29209 cut-off events. [2023-08-28 18:04:24,176 INFO L131 PetriNetUnfolder]: For 38157/38870 co-relation queries the response was YES. [2023-08-28 18:04:24,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82000 conditions, 29209 events. 11920/29209 cut-off events. For 38157/38870 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 304818 event pairs, 2271 based on Foata normal form. 553/28399 useless extension candidates. Maximal degree in co-relation 81972. Up to 10484 conditions per place. [2023-08-28 18:04:24,381 INFO L137 encePairwiseOnDemand]: 311/331 looper letters, 244 selfloop transitions, 66 changer transitions 0/389 dead transitions. [2023-08-28 18:04:24,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 389 transitions, 2869 flow [2023-08-28 18:04:24,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-28 18:04:24,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-28 18:04:24,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1844 transitions. [2023-08-28 18:04:24,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064542708047239 [2023-08-28 18:04:24,385 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1844 transitions. [2023-08-28 18:04:24,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1844 transitions. [2023-08-28 18:04:24,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:24,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1844 transitions. [2023-08-28 18:04:24,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 167.63636363636363) internal successors, (1844), 11 states have internal predecessors, (1844), 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) [2023-08-28 18:04:24,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 331.0) internal successors, (3972), 12 states have internal predecessors, (3972), 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) [2023-08-28 18:04:24,393 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 331.0) internal successors, (3972), 12 states have internal predecessors, (3972), 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) [2023-08-28 18:04:24,393 INFO L175 Difference]: Start difference. First operand has 171 places, 232 transitions, 1385 flow. Second operand 11 states and 1844 transitions. [2023-08-28 18:04:24,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 389 transitions, 2869 flow [2023-08-28 18:04:24,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 389 transitions, 2843 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-28 18:04:24,466 INFO L231 Difference]: Finished difference. Result has 187 places, 282 transitions, 2151 flow [2023-08-28 18:04:24,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2151, PETRI_PLACES=187, PETRI_TRANSITIONS=282} [2023-08-28 18:04:24,468 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 41 predicate places. [2023-08-28 18:04:24,468 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 282 transitions, 2151 flow [2023-08-28 18:04:24,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:04:24,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:24,469 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:24,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-28 18:04:24,469 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:04:24,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:24,469 INFO L85 PathProgramCache]: Analyzing trace with hash -81557193, now seen corresponding path program 3 times [2023-08-28 18:04:24,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:24,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852954570] [2023-08-28 18:04:24,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:24,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 18:04:24,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:24,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852954570] [2023-08-28 18:04:24,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852954570] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:24,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:24,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:04:24,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117368923] [2023-08-28 18:04:24,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:24,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:04:24,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:24,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:04:24,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:04:25,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:04:25,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 282 transitions, 2151 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:04:25,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:25,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:04:25,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:31,046 INFO L130 PetriNetUnfolder]: 14371/35958 cut-off events. [2023-08-28 18:04:31,046 INFO L131 PetriNetUnfolder]: For 66080/66784 co-relation queries the response was YES. [2023-08-28 18:04:31,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105983 conditions, 35958 events. 14371/35958 cut-off events. For 66080/66784 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 391494 event pairs, 2149 based on Foata normal form. 476/34719 useless extension candidates. Maximal degree in co-relation 105948. Up to 12611 conditions per place. [2023-08-28 18:04:31,605 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 274 selfloop transitions, 115 changer transitions 0/468 dead transitions. [2023-08-28 18:04:31,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 468 transitions, 4009 flow [2023-08-28 18:04:31,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-28 18:04:31,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-28 18:04:31,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2188 transitions. [2023-08-28 18:04:31,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084824541017895 [2023-08-28 18:04:31,611 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2188 transitions. [2023-08-28 18:04:31,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2188 transitions. [2023-08-28 18:04:31,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:31,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2188 transitions. [2023-08-28 18:04:31,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 168.30769230769232) internal successors, (2188), 13 states have internal predecessors, (2188), 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) [2023-08-28 18:04:31,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 331.0) internal successors, (4634), 14 states have internal predecessors, (4634), 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) [2023-08-28 18:04:31,621 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 331.0) internal successors, (4634), 14 states have internal predecessors, (4634), 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) [2023-08-28 18:04:31,621 INFO L175 Difference]: Start difference. First operand has 187 places, 282 transitions, 2151 flow. Second operand 13 states and 2188 transitions. [2023-08-28 18:04:31,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 468 transitions, 4009 flow [2023-08-28 18:04:31,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 468 transitions, 3957 flow, removed 26 selfloop flow, removed 0 redundant places. [2023-08-28 18:04:31,779 INFO L231 Difference]: Finished difference. Result has 207 places, 326 transitions, 3076 flow [2023-08-28 18:04:31,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3076, PETRI_PLACES=207, PETRI_TRANSITIONS=326} [2023-08-28 18:04:31,780 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 61 predicate places. [2023-08-28 18:04:31,780 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 326 transitions, 3076 flow [2023-08-28 18:04:31,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:04:31,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:31,781 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:31,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-28 18:04:31,781 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:04:31,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:31,782 INFO L85 PathProgramCache]: Analyzing trace with hash -536941135, now seen corresponding path program 4 times [2023-08-28 18:04:31,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:31,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955214255] [2023-08-28 18:04:31,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:31,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:32,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:04:32,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:32,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955214255] [2023-08-28 18:04:32,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955214255] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:32,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:32,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:04:32,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17546126] [2023-08-28 18:04:32,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:32,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:04:32,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:32,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:04:32,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:04:32,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:04:32,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 326 transitions, 3076 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:04:32,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:32,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:04:32,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:39,167 INFO L130 PetriNetUnfolder]: 16507/42191 cut-off events. [2023-08-28 18:04:39,168 INFO L131 PetriNetUnfolder]: For 106504/107255 co-relation queries the response was YES. [2023-08-28 18:04:39,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131064 conditions, 42191 events. 16507/42191 cut-off events. For 106504/107255 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 473574 event pairs, 3169 based on Foata normal form. 510/40766 useless extension candidates. Maximal degree in co-relation 131021. Up to 17071 conditions per place. [2023-08-28 18:04:39,752 INFO L137 encePairwiseOnDemand]: 308/331 looper letters, 299 selfloop transitions, 139 changer transitions 0/517 dead transitions. [2023-08-28 18:04:39,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 517 transitions, 5111 flow [2023-08-28 18:04:39,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-28 18:04:39,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-28 18:04:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2360 transitions. [2023-08-28 18:04:39,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092792403970652 [2023-08-28 18:04:39,757 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2360 transitions. [2023-08-28 18:04:39,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2360 transitions. [2023-08-28 18:04:39,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:39,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2360 transitions. [2023-08-28 18:04:39,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 168.57142857142858) internal successors, (2360), 14 states have internal predecessors, (2360), 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) [2023-08-28 18:04:39,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 331.0) internal successors, (4965), 15 states have internal predecessors, (4965), 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) [2023-08-28 18:04:39,767 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 331.0) internal successors, (4965), 15 states have internal predecessors, (4965), 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) [2023-08-28 18:04:39,768 INFO L175 Difference]: Start difference. First operand has 207 places, 326 transitions, 3076 flow. Second operand 14 states and 2360 transitions. [2023-08-28 18:04:39,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 517 transitions, 5111 flow [2023-08-28 18:04:39,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 517 transitions, 5066 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-28 18:04:39,985 INFO L231 Difference]: Finished difference. Result has 225 places, 363 transitions, 4098 flow [2023-08-28 18:04:39,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=3035, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4098, PETRI_PLACES=225, PETRI_TRANSITIONS=363} [2023-08-28 18:04:39,986 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 79 predicate places. [2023-08-28 18:04:39,986 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 363 transitions, 4098 flow [2023-08-28 18:04:39,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:04:39,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:39,987 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:39,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-28 18:04:39,987 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:04:39,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:39,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1741969647, now seen corresponding path program 5 times [2023-08-28 18:04:39,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:39,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546434500] [2023-08-28 18:04:39,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:39,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:04:40,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:40,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546434500] [2023-08-28 18:04:40,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546434500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:40,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:40,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:04:40,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069228929] [2023-08-28 18:04:40,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:40,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:04:40,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:40,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:04:40,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:04:41,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:04:41,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 363 transitions, 4098 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:04:41,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:41,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:04:41,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:48,216 INFO L130 PetriNetUnfolder]: 16640/42155 cut-off events. [2023-08-28 18:04:48,216 INFO L131 PetriNetUnfolder]: For 134123/134885 co-relation queries the response was YES. [2023-08-28 18:04:48,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135823 conditions, 42155 events. 16640/42155 cut-off events. For 134123/134885 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 471294 event pairs, 3140 based on Foata normal form. 413/40569 useless extension candidates. Maximal degree in co-relation 135773. Up to 15800 conditions per place. [2023-08-28 18:04:49,028 INFO L137 encePairwiseOnDemand]: 312/331 looper letters, 307 selfloop transitions, 141 changer transitions 0/527 dead transitions. [2023-08-28 18:04:49,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 527 transitions, 5801 flow [2023-08-28 18:04:49,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-28 18:04:49,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-28 18:04:49,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2355 transitions. [2023-08-28 18:04:49,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508200258955546 [2023-08-28 18:04:49,034 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2355 transitions. [2023-08-28 18:04:49,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2355 transitions. [2023-08-28 18:04:49,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:49,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2355 transitions. [2023-08-28 18:04:49,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 168.21428571428572) internal successors, (2355), 14 states have internal predecessors, (2355), 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) [2023-08-28 18:04:49,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 331.0) internal successors, (4965), 15 states have internal predecessors, (4965), 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) [2023-08-28 18:04:49,043 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 331.0) internal successors, (4965), 15 states have internal predecessors, (4965), 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) [2023-08-28 18:04:49,043 INFO L175 Difference]: Start difference. First operand has 225 places, 363 transitions, 4098 flow. Second operand 14 states and 2355 transitions. [2023-08-28 18:04:49,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 527 transitions, 5801 flow [2023-08-28 18:04:49,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 527 transitions, 5730 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-08-28 18:04:49,369 INFO L231 Difference]: Finished difference. Result has 238 places, 368 transitions, 4569 flow [2023-08-28 18:04:49,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=4039, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4569, PETRI_PLACES=238, PETRI_TRANSITIONS=368} [2023-08-28 18:04:49,370 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 92 predicate places. [2023-08-28 18:04:49,370 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 368 transitions, 4569 flow [2023-08-28 18:04:49,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:04:49,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:49,371 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:49,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-28 18:04:49,371 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:04:49,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:49,371 INFO L85 PathProgramCache]: Analyzing trace with hash -518989395, now seen corresponding path program 6 times [2023-08-28 18:04:49,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:49,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768323799] [2023-08-28 18:04:49,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:49,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:49,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:04:49,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:49,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768323799] [2023-08-28 18:04:49,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768323799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:49,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:49,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:04:49,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653014012] [2023-08-28 18:04:49,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:49,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:04:49,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:49,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:04:49,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:04:50,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:04:50,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 368 transitions, 4569 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:04:50,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:50,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:04:50,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:58,645 INFO L130 PetriNetUnfolder]: 18850/48152 cut-off events. [2023-08-28 18:04:58,645 INFO L131 PetriNetUnfolder]: For 193813/194623 co-relation queries the response was YES. [2023-08-28 18:04:59,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159181 conditions, 48152 events. 18850/48152 cut-off events. For 193813/194623 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 552876 event pairs, 3575 based on Foata normal form. 452/46350 useless extension candidates. Maximal degree in co-relation 159128. Up to 16106 conditions per place. [2023-08-28 18:04:59,453 INFO L137 encePairwiseOnDemand]: 312/331 looper letters, 299 selfloop transitions, 156 changer transitions 0/534 dead transitions. [2023-08-28 18:04:59,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 534 transitions, 6624 flow [2023-08-28 18:04:59,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-28 18:04:59,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-28 18:04:59,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2187 transitions. [2023-08-28 18:04:59,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082500580990007 [2023-08-28 18:04:59,457 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2187 transitions. [2023-08-28 18:04:59,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2187 transitions. [2023-08-28 18:04:59,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:59,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2187 transitions. [2023-08-28 18:04:59,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 168.23076923076923) internal successors, (2187), 13 states have internal predecessors, (2187), 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) [2023-08-28 18:04:59,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 331.0) internal successors, (4634), 14 states have internal predecessors, (4634), 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) [2023-08-28 18:04:59,466 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 331.0) internal successors, (4634), 14 states have internal predecessors, (4634), 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) [2023-08-28 18:04:59,466 INFO L175 Difference]: Start difference. First operand has 238 places, 368 transitions, 4569 flow. Second operand 13 states and 2187 transitions. [2023-08-28 18:04:59,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 534 transitions, 6624 flow [2023-08-28 18:05:00,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 534 transitions, 6506 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-08-28 18:05:00,038 INFO L231 Difference]: Finished difference. Result has 248 places, 396 transitions, 5572 flow [2023-08-28 18:05:00,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=4461, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5572, PETRI_PLACES=248, PETRI_TRANSITIONS=396} [2023-08-28 18:05:00,039 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 102 predicate places. [2023-08-28 18:05:00,039 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 396 transitions, 5572 flow [2023-08-28 18:05:00,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:05:00,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:05:00,040 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:05:00,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-28 18:05:00,040 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:05:00,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:05:00,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1420263769, now seen corresponding path program 7 times [2023-08-28 18:05:00,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:05:00,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192580683] [2023-08-28 18:05:00,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:05:00,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:05:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:05:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:05:00,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:05:00,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192580683] [2023-08-28 18:05:00,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192580683] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:05:00,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:05:00,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:05:00,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761035521] [2023-08-28 18:05:00,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:05:00,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:05:00,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:05:00,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:05:00,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:05:01,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:05:01,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 396 transitions, 5572 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:05:01,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:05:01,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:05:01,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:05:10,651 INFO L130 PetriNetUnfolder]: 21053/53921 cut-off events. [2023-08-28 18:05:10,651 INFO L131 PetriNetUnfolder]: For 271271/272143 co-relation queries the response was YES. [2023-08-28 18:05:11,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183529 conditions, 53921 events. 21053/53921 cut-off events. For 271271/272143 co-relation queries the response was YES. Maximal size of possible extension queue 1230. Compared 632260 event pairs, 4011 based on Foata normal form. 494/51890 useless extension candidates. Maximal degree in co-relation 183470. Up to 19350 conditions per place. [2023-08-28 18:05:11,889 INFO L137 encePairwiseOnDemand]: 312/331 looper letters, 304 selfloop transitions, 174 changer transitions 0/557 dead transitions. [2023-08-28 18:05:11,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 557 transitions, 7645 flow [2023-08-28 18:05:11,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-28 18:05:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-28 18:05:11,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2187 transitions. [2023-08-28 18:05:11,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082500580990007 [2023-08-28 18:05:11,894 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2187 transitions. [2023-08-28 18:05:11,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2187 transitions. [2023-08-28 18:05:11,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:05:11,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2187 transitions. [2023-08-28 18:05:11,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 168.23076923076923) internal successors, (2187), 13 states have internal predecessors, (2187), 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) [2023-08-28 18:05:11,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 331.0) internal successors, (4634), 14 states have internal predecessors, (4634), 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) [2023-08-28 18:05:11,902 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 331.0) internal successors, (4634), 14 states have internal predecessors, (4634), 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) [2023-08-28 18:05:11,902 INFO L175 Difference]: Start difference. First operand has 248 places, 396 transitions, 5572 flow. Second operand 13 states and 2187 transitions. [2023-08-28 18:05:11,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 557 transitions, 7645 flow [2023-08-28 18:05:12,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 557 transitions, 7528 flow, removed 32 selfloop flow, removed 3 redundant places. [2023-08-28 18:05:12,935 INFO L231 Difference]: Finished difference. Result has 262 places, 420 transitions, 6621 flow [2023-08-28 18:05:12,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=5463, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6621, PETRI_PLACES=262, PETRI_TRANSITIONS=420} [2023-08-28 18:05:12,936 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 116 predicate places. [2023-08-28 18:05:12,936 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 420 transitions, 6621 flow [2023-08-28 18:05:12,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:05:12,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:05:12,937 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:05:12,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-28 18:05:12,937 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:05:12,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:05:12,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1423530859, now seen corresponding path program 8 times [2023-08-28 18:05:12,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:05:12,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710309784] [2023-08-28 18:05:12,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:05:12,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:05:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:05:13,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:05:13,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:05:13,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710309784] [2023-08-28 18:05:13,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710309784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:05:13,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:05:13,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:05:13,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360644027] [2023-08-28 18:05:13,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:05:13,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:05:13,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:05:13,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:05:13,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:05:13,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:05:13,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 420 transitions, 6621 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:05:13,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:05:13,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:05:13,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:05:24,106 INFO L130 PetriNetUnfolder]: 21192/54631 cut-off events. [2023-08-28 18:05:24,106 INFO L131 PetriNetUnfolder]: For 338384/339262 co-relation queries the response was YES. [2023-08-28 18:05:24,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191251 conditions, 54631 events. 21192/54631 cut-off events. For 338384/339262 co-relation queries the response was YES. Maximal size of possible extension queue 1245. Compared 643713 event pairs, 4228 based on Foata normal form. 497/52560 useless extension candidates. Maximal degree in co-relation 191187. Up to 19170 conditions per place. [2023-08-28 18:05:24,961 INFO L137 encePairwiseOnDemand]: 312/331 looper letters, 326 selfloop transitions, 176 changer transitions 0/581 dead transitions. [2023-08-28 18:05:24,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 581 transitions, 8411 flow [2023-08-28 18:05:24,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-28 18:05:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-28 18:05:24,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2509 transitions. [2023-08-28 18:05:24,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505337361530715 [2023-08-28 18:05:24,964 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2509 transitions. [2023-08-28 18:05:24,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2509 transitions. [2023-08-28 18:05:24,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:05:24,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2509 transitions. [2023-08-28 18:05:24,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 167.26666666666668) internal successors, (2509), 15 states have internal predecessors, (2509), 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) [2023-08-28 18:05:24,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 331.0) internal successors, (5296), 16 states have internal predecessors, (5296), 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) [2023-08-28 18:05:24,972 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 331.0) internal successors, (5296), 16 states have internal predecessors, (5296), 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) [2023-08-28 18:05:24,973 INFO L175 Difference]: Start difference. First operand has 262 places, 420 transitions, 6621 flow. Second operand 15 states and 2509 transitions. [2023-08-28 18:05:24,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 581 transitions, 8411 flow [2023-08-28 18:05:26,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 581 transitions, 8321 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-28 18:05:26,126 INFO L231 Difference]: Finished difference. Result has 275 places, 425 transitions, 7217 flow [2023-08-28 18:05:26,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=6531, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7217, PETRI_PLACES=275, PETRI_TRANSITIONS=425} [2023-08-28 18:05:26,126 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 129 predicate places. [2023-08-28 18:05:26,127 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 425 transitions, 7217 flow [2023-08-28 18:05:26,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:05:26,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:05:26,127 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:05:26,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-28 18:05:26,127 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:05:26,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:05:26,128 INFO L85 PathProgramCache]: Analyzing trace with hash 676504561, now seen corresponding path program 9 times [2023-08-28 18:05:26,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:05:26,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034602854] [2023-08-28 18:05:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:05:26,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:05:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:05:26,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:05:26,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:05:26,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034602854] [2023-08-28 18:05:26,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034602854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:05:26,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:05:26,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:05:26,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106402561] [2023-08-28 18:05:26,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:05:26,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:05:26,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:05:26,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:05:26,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:05:27,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:05:27,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 425 transitions, 7217 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:05:27,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:05:27,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:05:27,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:05:36,561 INFO L130 PetriNetUnfolder]: 21382/55026 cut-off events. [2023-08-28 18:05:36,561 INFO L131 PetriNetUnfolder]: For 409546/410430 co-relation queries the response was YES. [2023-08-28 18:05:37,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198441 conditions, 55026 events. 21382/55026 cut-off events. For 409546/410430 co-relation queries the response was YES. Maximal size of possible extension queue 1250. Compared 648372 event pairs, 4226 based on Foata normal form. 499/52918 useless extension candidates. Maximal degree in co-relation 198374. Up to 19174 conditions per place. [2023-08-28 18:05:37,297 INFO L137 encePairwiseOnDemand]: 312/331 looper letters, 345 selfloop transitions, 181 changer transitions 0/605 dead transitions. [2023-08-28 18:05:37,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 605 transitions, 9165 flow [2023-08-28 18:05:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-28 18:05:37,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-28 18:05:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2679 transitions. [2023-08-28 18:05:37,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058534743202417 [2023-08-28 18:05:37,300 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2679 transitions. [2023-08-28 18:05:37,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2679 transitions. [2023-08-28 18:05:37,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:05:37,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2679 transitions. [2023-08-28 18:05:37,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 167.4375) internal successors, (2679), 16 states have internal predecessors, (2679), 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) [2023-08-28 18:05:37,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 331.0) internal successors, (5627), 17 states have internal predecessors, (5627), 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) [2023-08-28 18:05:37,306 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 331.0) internal successors, (5627), 17 states have internal predecessors, (5627), 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) [2023-08-28 18:05:37,307 INFO L175 Difference]: Start difference. First operand has 275 places, 425 transitions, 7217 flow. Second operand 16 states and 2679 transitions. [2023-08-28 18:05:37,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 605 transitions, 9165 flow [2023-08-28 18:05:38,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 605 transitions, 9025 flow, removed 14 selfloop flow, removed 9 redundant places. [2023-08-28 18:05:38,735 INFO L231 Difference]: Finished difference. Result has 285 places, 432 transitions, 7823 flow [2023-08-28 18:05:38,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=7079, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7823, PETRI_PLACES=285, PETRI_TRANSITIONS=432} [2023-08-28 18:05:38,735 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 139 predicate places. [2023-08-28 18:05:38,735 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 432 transitions, 7823 flow [2023-08-28 18:05:38,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:05:38,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:05:38,736 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:05:38,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-28 18:05:38,736 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:05:38,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:05:38,736 INFO L85 PathProgramCache]: Analyzing trace with hash -622613715, now seen corresponding path program 10 times [2023-08-28 18:05:38,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:05:38,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52701656] [2023-08-28 18:05:38,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:05:38,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:05:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:05:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:05:39,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:05:39,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52701656] [2023-08-28 18:05:39,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52701656] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:05:39,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:05:39,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:05:39,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143733403] [2023-08-28 18:05:39,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:05:39,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:05:39,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:05:39,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:05:39,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:05:39,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:05:39,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 432 transitions, 7823 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:05:39,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:05:39,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:05:39,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:05:49,552 INFO L130 PetriNetUnfolder]: 21572/55689 cut-off events. [2023-08-28 18:05:49,553 INFO L131 PetriNetUnfolder]: For 489720/490610 co-relation queries the response was YES. [2023-08-28 18:05:50,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206174 conditions, 55689 events. 21572/55689 cut-off events. For 489720/490610 co-relation queries the response was YES. Maximal size of possible extension queue 1258. Compared 657740 event pairs, 4261 based on Foata normal form. 501/53536 useless extension candidates. Maximal degree in co-relation 206104. Up to 18243 conditions per place. [2023-08-28 18:05:50,742 INFO L137 encePairwiseOnDemand]: 312/331 looper letters, 348 selfloop transitions, 186 changer transitions 0/613 dead transitions. [2023-08-28 18:05:50,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 613 transitions, 9809 flow [2023-08-28 18:05:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-28 18:05:50,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-28 18:05:50,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2833 transitions. [2023-08-28 18:05:50,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034654345121734 [2023-08-28 18:05:50,745 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2833 transitions. [2023-08-28 18:05:50,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2833 transitions. [2023-08-28 18:05:50,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:05:50,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2833 transitions. [2023-08-28 18:05:50,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 166.64705882352942) internal successors, (2833), 17 states have internal predecessors, (2833), 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) [2023-08-28 18:05:50,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 331.0) internal successors, (5958), 18 states have internal predecessors, (5958), 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) [2023-08-28 18:05:50,752 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 331.0) internal successors, (5958), 18 states have internal predecessors, (5958), 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) [2023-08-28 18:05:50,752 INFO L175 Difference]: Start difference. First operand has 285 places, 432 transitions, 7823 flow. Second operand 17 states and 2833 transitions. [2023-08-28 18:05:50,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 613 transitions, 9809 flow [2023-08-28 18:05:52,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 613 transitions, 9607 flow, removed 25 selfloop flow, removed 12 redundant places. [2023-08-28 18:05:52,656 INFO L231 Difference]: Finished difference. Result has 293 places, 439 transitions, 8398 flow [2023-08-28 18:05:52,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=7629, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8398, PETRI_PLACES=293, PETRI_TRANSITIONS=439} [2023-08-28 18:05:52,663 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 147 predicate places. [2023-08-28 18:05:52,663 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 439 transitions, 8398 flow [2023-08-28 18:05:52,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:05:52,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:05:52,667 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:05:52,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-28 18:05:52,675 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:05:52,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:05:52,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1610513839, now seen corresponding path program 11 times [2023-08-28 18:05:52,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:05:52,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942263661] [2023-08-28 18:05:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:05:52,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:05:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:05:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:05:53,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:05:53,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942263661] [2023-08-28 18:05:53,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942263661] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:05:53,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:05:53,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:05:53,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084329104] [2023-08-28 18:05:53,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:05:53,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:05:53,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:05:53,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:05:53,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:05:53,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:05:53,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 439 transitions, 8398 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:05:53,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:05:53,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:05:53,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:06:04,991 INFO L130 PetriNetUnfolder]: 21791/54782 cut-off events. [2023-08-28 18:06:04,991 INFO L131 PetriNetUnfolder]: For 557885/558784 co-relation queries the response was YES. [2023-08-28 18:06:06,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211380 conditions, 54782 events. 21791/54782 cut-off events. For 557885/558784 co-relation queries the response was YES. Maximal size of possible extension queue 1232. Compared 638021 event pairs, 2546 based on Foata normal form. 505/52997 useless extension candidates. Maximal degree in co-relation 211306. Up to 19631 conditions per place. [2023-08-28 18:06:06,278 INFO L137 encePairwiseOnDemand]: 300/331 looper letters, 364 selfloop transitions, 211 changer transitions 0/654 dead transitions. [2023-08-28 18:06:06,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 654 transitions, 10664 flow [2023-08-28 18:06:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-28 18:06:06,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-28 18:06:06,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3015 transitions. [2023-08-28 18:06:06,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5060422960725075 [2023-08-28 18:06:06,282 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3015 transitions. [2023-08-28 18:06:06,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3015 transitions. [2023-08-28 18:06:06,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:06:06,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3015 transitions. [2023-08-28 18:06:06,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 167.5) internal successors, (3015), 18 states have internal predecessors, (3015), 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) [2023-08-28 18:06:06,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 331.0) internal successors, (6289), 19 states have internal predecessors, (6289), 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) [2023-08-28 18:06:06,291 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 331.0) internal successors, (6289), 19 states have internal predecessors, (6289), 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) [2023-08-28 18:06:06,291 INFO L175 Difference]: Start difference. First operand has 293 places, 439 transitions, 8398 flow. Second operand 18 states and 3015 transitions. [2023-08-28 18:06:06,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 654 transitions, 10664 flow [2023-08-28 18:06:08,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 654 transitions, 10320 flow, removed 37 selfloop flow, removed 15 redundant places. [2023-08-28 18:06:08,964 INFO L231 Difference]: Finished difference. Result has 300 places, 460 transitions, 9065 flow [2023-08-28 18:06:08,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=8076, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9065, PETRI_PLACES=300, PETRI_TRANSITIONS=460} [2023-08-28 18:06:08,965 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 154 predicate places. [2023-08-28 18:06:08,965 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 460 transitions, 9065 flow [2023-08-28 18:06:08,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:06:08,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:06:08,966 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:06:08,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-28 18:06:08,966 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:06:08,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:06:08,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1923900709, now seen corresponding path program 12 times [2023-08-28 18:06:08,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:06:08,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928437682] [2023-08-28 18:06:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:06:08,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:06:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:06:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:06:09,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:06:09,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928437682] [2023-08-28 18:06:09,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928437682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:06:09,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:06:09,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:06:09,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225152943] [2023-08-28 18:06:09,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:06:09,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:06:09,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:06:09,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:06:09,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:06:09,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:06:09,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 460 transitions, 9065 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:06:09,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:06:09,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:06:09,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:06:21,489 INFO L130 PetriNetUnfolder]: 22034/56039 cut-off events. [2023-08-28 18:06:21,490 INFO L131 PetriNetUnfolder]: For 608854/609774 co-relation queries the response was YES. [2023-08-28 18:06:22,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223981 conditions, 56039 events. 22034/56039 cut-off events. For 608854/609774 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 657824 event pairs, 3267 based on Foata normal form. 521/54072 useless extension candidates. Maximal degree in co-relation 223907. Up to 25524 conditions per place. [2023-08-28 18:06:22,816 INFO L137 encePairwiseOnDemand]: 299/331 looper letters, 394 selfloop transitions, 219 changer transitions 0/692 dead transitions. [2023-08-28 18:06:22,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 692 transitions, 11511 flow [2023-08-28 18:06:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-28 18:06:22,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-28 18:06:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3339 transitions. [2023-08-28 18:06:22,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043806646525679 [2023-08-28 18:06:22,820 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3339 transitions. [2023-08-28 18:06:22,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3339 transitions. [2023-08-28 18:06:22,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:06:22,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3339 transitions. [2023-08-28 18:06:22,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 166.95) internal successors, (3339), 20 states have internal predecessors, (3339), 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) [2023-08-28 18:06:22,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 331.0) internal successors, (6951), 21 states have internal predecessors, (6951), 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) [2023-08-28 18:06:22,827 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 331.0) internal successors, (6951), 21 states have internal predecessors, (6951), 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) [2023-08-28 18:06:22,827 INFO L175 Difference]: Start difference. First operand has 300 places, 460 transitions, 9065 flow. Second operand 20 states and 3339 transitions. [2023-08-28 18:06:22,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 692 transitions, 11511 flow [2023-08-28 18:06:27,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 692 transitions, 11277 flow, removed 32 selfloop flow, removed 13 redundant places. [2023-08-28 18:06:27,534 INFO L231 Difference]: Finished difference. Result has 311 places, 481 transitions, 9906 flow [2023-08-28 18:06:27,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=8843, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=9906, PETRI_PLACES=311, PETRI_TRANSITIONS=481} [2023-08-28 18:06:27,535 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 165 predicate places. [2023-08-28 18:06:27,535 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 481 transitions, 9906 flow [2023-08-28 18:06:27,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:06:27,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:06:27,536 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:06:27,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-28 18:06:27,536 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:06:27,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:06:27,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1363522611, now seen corresponding path program 1 times [2023-08-28 18:06:27,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:06:27,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892561154] [2023-08-28 18:06:27,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:06:27,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:06:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:06:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:06:27,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:06:27,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892561154] [2023-08-28 18:06:27,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892561154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:06:27,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:06:27,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:06:27,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644376311] [2023-08-28 18:06:27,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:06:27,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:06:27,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:06:27,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:06:27,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:06:28,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:06:28,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 481 transitions, 9906 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:06:28,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:06:28,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:06:28,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:06:39,459 INFO L130 PetriNetUnfolder]: 21943/50291 cut-off events. [2023-08-28 18:06:39,459 INFO L131 PetriNetUnfolder]: For 668324/669897 co-relation queries the response was YES. [2023-08-28 18:06:40,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220800 conditions, 50291 events. 21943/50291 cut-off events. For 668324/669897 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 551068 event pairs, 2929 based on Foata normal form. 587/48127 useless extension candidates. Maximal degree in co-relation 220723. Up to 25716 conditions per place. [2023-08-28 18:06:40,627 INFO L137 encePairwiseOnDemand]: 311/331 looper letters, 398 selfloop transitions, 67 changer transitions 0/641 dead transitions. [2023-08-28 18:06:40,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 641 transitions, 12906 flow [2023-08-28 18:06:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-28 18:06:40,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-28 18:06:40,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1844 transitions. [2023-08-28 18:06:40,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064542708047239 [2023-08-28 18:06:40,630 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1844 transitions. [2023-08-28 18:06:40,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1844 transitions. [2023-08-28 18:06:40,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:06:40,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1844 transitions. [2023-08-28 18:06:40,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 167.63636363636363) internal successors, (1844), 11 states have internal predecessors, (1844), 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) [2023-08-28 18:06:40,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 331.0) internal successors, (3972), 12 states have internal predecessors, (3972), 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) [2023-08-28 18:06:40,634 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 331.0) internal successors, (3972), 12 states have internal predecessors, (3972), 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) [2023-08-28 18:06:40,634 INFO L175 Difference]: Start difference. First operand has 311 places, 481 transitions, 9906 flow. Second operand 11 states and 1844 transitions. [2023-08-28 18:06:40,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 641 transitions, 12906 flow [2023-08-28 18:06:44,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 641 transitions, 12504 flow, removed 42 selfloop flow, removed 17 redundant places. [2023-08-28 18:06:44,629 INFO L231 Difference]: Finished difference. Result has 310 places, 505 transitions, 10076 flow [2023-08-28 18:06:44,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=9525, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10076, PETRI_PLACES=310, PETRI_TRANSITIONS=505} [2023-08-28 18:06:44,631 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 164 predicate places. [2023-08-28 18:06:44,631 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 505 transitions, 10076 flow [2023-08-28 18:06:44,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:06:44,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:06:44,631 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:06:44,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-28 18:06:44,632 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:06:44,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:06:44,632 INFO L85 PathProgramCache]: Analyzing trace with hash -829239239, now seen corresponding path program 2 times [2023-08-28 18:06:44,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:06:44,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802775308] [2023-08-28 18:06:44,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:06:44,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:06:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:06:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:06:44,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:06:44,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802775308] [2023-08-28 18:06:44,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802775308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:06:44,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:06:44,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:06:44,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622068600] [2023-08-28 18:06:44,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:06:44,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:06:44,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:06:44,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:06:44,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:06:45,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:06:45,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 505 transitions, 10076 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:06:45,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:06:45,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:06:45,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:06:56,096 INFO L130 PetriNetUnfolder]: 21911/49391 cut-off events. [2023-08-28 18:06:56,097 INFO L131 PetriNetUnfolder]: For 660171/661734 co-relation queries the response was YES. [2023-08-28 18:06:56,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223366 conditions, 49391 events. 21911/49391 cut-off events. For 660171/661734 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 534662 event pairs, 1596 based on Foata normal form. 491/47401 useless extension candidates. Maximal degree in co-relation 223289. Up to 26813 conditions per place. [2023-08-28 18:06:56,956 INFO L137 encePairwiseOnDemand]: 302/331 looper letters, 523 selfloop transitions, 105 changer transitions 0/804 dead transitions. [2023-08-28 18:06:56,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 804 transitions, 17588 flow [2023-08-28 18:06:56,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-28 18:06:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-28 18:06:56,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2357 transitions. [2023-08-28 18:06:56,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5086318515321536 [2023-08-28 18:06:56,959 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2357 transitions. [2023-08-28 18:06:56,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2357 transitions. [2023-08-28 18:06:56,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:06:56,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2357 transitions. [2023-08-28 18:06:56,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 168.35714285714286) internal successors, (2357), 14 states have internal predecessors, (2357), 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) [2023-08-28 18:06:56,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 331.0) internal successors, (4965), 15 states have internal predecessors, (4965), 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) [2023-08-28 18:06:56,963 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 331.0) internal successors, (4965), 15 states have internal predecessors, (4965), 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) [2023-08-28 18:06:56,964 INFO L175 Difference]: Start difference. First operand has 310 places, 505 transitions, 10076 flow. Second operand 14 states and 2357 transitions. [2023-08-28 18:06:56,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 804 transitions, 17588 flow [2023-08-28 18:06:59,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 804 transitions, 17567 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-28 18:06:59,790 INFO L231 Difference]: Finished difference. Result has 325 places, 530 transitions, 10677 flow [2023-08-28 18:06:59,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=10055, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10677, PETRI_PLACES=325, PETRI_TRANSITIONS=530} [2023-08-28 18:06:59,791 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 179 predicate places. [2023-08-28 18:06:59,791 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 530 transitions, 10677 flow [2023-08-28 18:06:59,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:06:59,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:06:59,792 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:06:59,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-28 18:06:59,792 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:06:59,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:06:59,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1659326383, now seen corresponding path program 13 times [2023-08-28 18:06:59,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:06:59,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041983293] [2023-08-28 18:06:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:06:59,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:06:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:07:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:07:00,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:07:00,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041983293] [2023-08-28 18:07:00,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041983293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:07:00,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:07:00,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:07:00,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861165783] [2023-08-28 18:07:00,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:07:00,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:07:00,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:07:00,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:07:00,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:07:00,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:07:00,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 530 transitions, 10677 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:07:00,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:07:00,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:07:00,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:07:13,183 INFO L130 PetriNetUnfolder]: 24311/60652 cut-off events. [2023-08-28 18:07:13,183 INFO L131 PetriNetUnfolder]: For 762980/765100 co-relation queries the response was YES. [2023-08-28 18:07:14,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265735 conditions, 60652 events. 24311/60652 cut-off events. For 762980/765100 co-relation queries the response was YES. Maximal size of possible extension queue 1342. Compared 712380 event pairs, 4518 based on Foata normal form. 1119/58604 useless extension candidates. Maximal degree in co-relation 265653. Up to 24576 conditions per place. [2023-08-28 18:07:14,321 INFO L137 encePairwiseOnDemand]: 314/331 looper letters, 417 selfloop transitions, 141 changer transitions 0/662 dead transitions. [2023-08-28 18:07:14,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 662 transitions, 12688 flow [2023-08-28 18:07:14,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-28 18:07:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-28 18:07:14,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2011 transitions. [2023-08-28 18:07:14,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506294058408862 [2023-08-28 18:07:14,325 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2011 transitions. [2023-08-28 18:07:14,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2011 transitions. [2023-08-28 18:07:14,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:07:14,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2011 transitions. [2023-08-28 18:07:14,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 167.58333333333334) internal successors, (2011), 12 states have internal predecessors, (2011), 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) [2023-08-28 18:07:14,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 331.0) internal successors, (4303), 13 states have internal predecessors, (4303), 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) [2023-08-28 18:07:14,330 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 331.0) internal successors, (4303), 13 states have internal predecessors, (4303), 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) [2023-08-28 18:07:14,330 INFO L175 Difference]: Start difference. First operand has 325 places, 530 transitions, 10677 flow. Second operand 12 states and 2011 transitions. [2023-08-28 18:07:14,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 662 transitions, 12688 flow [2023-08-28 18:07:18,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 662 transitions, 12591 flow, removed 13 selfloop flow, removed 11 redundant places. [2023-08-28 18:07:18,724 INFO L231 Difference]: Finished difference. Result has 328 places, 535 transitions, 11249 flow [2023-08-28 18:07:18,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=10580, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11249, PETRI_PLACES=328, PETRI_TRANSITIONS=535} [2023-08-28 18:07:18,726 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 182 predicate places. [2023-08-28 18:07:18,726 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 535 transitions, 11249 flow [2023-08-28 18:07:18,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:07:18,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:07:18,727 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:07:18,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-28 18:07:18,727 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:07:18,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:07:18,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1759683613, now seen corresponding path program 14 times [2023-08-28 18:07:18,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:07:18,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258615985] [2023-08-28 18:07:18,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:07:18,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:07:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:07:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:07:18,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:07:18,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258615985] [2023-08-28 18:07:18,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258615985] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:07:18,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:07:18,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:07:18,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494789063] [2023-08-28 18:07:18,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:07:18,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:07:18,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:07:18,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:07:18,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:07:19,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:07:19,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 535 transitions, 11249 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:07:19,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:07:19,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:07:19,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:07:33,593 INFO L130 PetriNetUnfolder]: 24538/61208 cut-off events. [2023-08-28 18:07:33,593 INFO L131 PetriNetUnfolder]: For 863658/865791 co-relation queries the response was YES. [2023-08-28 18:07:35,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274084 conditions, 61208 events. 24538/61208 cut-off events. For 863658/865791 co-relation queries the response was YES. Maximal size of possible extension queue 1351. Compared 720077 event pairs, 4550 based on Foata normal form. 1127/59112 useless extension candidates. Maximal degree in co-relation 274003. Up to 24602 conditions per place. [2023-08-28 18:07:35,295 INFO L137 encePairwiseOnDemand]: 314/331 looper letters, 436 selfloop transitions, 146 changer transitions 0/686 dead transitions. [2023-08-28 18:07:35,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 686 transitions, 13436 flow [2023-08-28 18:07:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-28 18:07:35,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-28 18:07:35,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2181 transitions. [2023-08-28 18:07:35,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068556820822682 [2023-08-28 18:07:35,298 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2181 transitions. [2023-08-28 18:07:35,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2181 transitions. [2023-08-28 18:07:35,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:07:35,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2181 transitions. [2023-08-28 18:07:35,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 167.76923076923077) internal successors, (2181), 13 states have internal predecessors, (2181), 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) [2023-08-28 18:07:35,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 331.0) internal successors, (4634), 14 states have internal predecessors, (4634), 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) [2023-08-28 18:07:35,303 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 331.0) internal successors, (4634), 14 states have internal predecessors, (4634), 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) [2023-08-28 18:07:35,303 INFO L175 Difference]: Start difference. First operand has 328 places, 535 transitions, 11249 flow. Second operand 13 states and 2181 transitions. [2023-08-28 18:07:35,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 686 transitions, 13436 flow [2023-08-28 18:07:39,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 686 transitions, 13369 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-28 18:07:39,421 INFO L231 Difference]: Finished difference. Result has 337 places, 542 transitions, 11913 flow [2023-08-28 18:07:39,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=11182, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11913, PETRI_PLACES=337, PETRI_TRANSITIONS=542} [2023-08-28 18:07:39,422 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 191 predicate places. [2023-08-28 18:07:39,422 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 542 transitions, 11913 flow [2023-08-28 18:07:39,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:07:39,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:07:39,422 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:07:39,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-28 18:07:39,423 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:07:39,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:07:39,423 INFO L85 PathProgramCache]: Analyzing trace with hash -547191087, now seen corresponding path program 15 times [2023-08-28 18:07:39,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:07:39,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443389124] [2023-08-28 18:07:39,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:07:39,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:07:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:07:39,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:07:39,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:07:39,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443389124] [2023-08-28 18:07:39,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443389124] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:07:39,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:07:39,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:07:39,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509961603] [2023-08-28 18:07:39,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:07:39,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:07:39,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:07:39,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:07:39,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:07:40,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:07:40,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 542 transitions, 11913 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:07:40,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:07:40,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:07:40,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:07:53,136 INFO L130 PetriNetUnfolder]: 24733/60153 cut-off events. [2023-08-28 18:07:53,137 INFO L131 PetriNetUnfolder]: For 966732/968863 co-relation queries the response was YES. [2023-08-28 18:07:54,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281162 conditions, 60153 events. 24733/60153 cut-off events. For 966732/968863 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 697493 event pairs, 1914 based on Foata normal form. 1123/58603 useless extension candidates. Maximal degree in co-relation 281077. Up to 17962 conditions per place. [2023-08-28 18:07:54,636 INFO L137 encePairwiseOnDemand]: 302/331 looper letters, 418 selfloop transitions, 220 changer transitions 0/742 dead transitions. [2023-08-28 18:07:54,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 742 transitions, 14658 flow [2023-08-28 18:07:54,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-28 18:07:54,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-28 18:07:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2363 transitions. [2023-08-28 18:07:54,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5099266292619767 [2023-08-28 18:07:54,639 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2363 transitions. [2023-08-28 18:07:54,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2363 transitions. [2023-08-28 18:07:54,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:07:54,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2363 transitions. [2023-08-28 18:07:54,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 168.78571428571428) internal successors, (2363), 14 states have internal predecessors, (2363), 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) [2023-08-28 18:07:54,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 331.0) internal successors, (4965), 15 states have internal predecessors, (4965), 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) [2023-08-28 18:07:54,644 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 331.0) internal successors, (4965), 15 states have internal predecessors, (4965), 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) [2023-08-28 18:07:54,644 INFO L175 Difference]: Start difference. First operand has 337 places, 542 transitions, 11913 flow. Second operand 14 states and 2363 transitions. [2023-08-28 18:07:54,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 742 transitions, 14658 flow [2023-08-28 18:07:59,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 742 transitions, 14556 flow, removed 29 selfloop flow, removed 7 redundant places. [2023-08-28 18:07:59,689 INFO L231 Difference]: Finished difference. Result has 348 places, 563 transitions, 13078 flow [2023-08-28 18:07:59,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=11821, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13078, PETRI_PLACES=348, PETRI_TRANSITIONS=563} [2023-08-28 18:07:59,690 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 202 predicate places. [2023-08-28 18:07:59,690 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 563 transitions, 13078 flow [2023-08-28 18:07:59,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:07:59,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:07:59,691 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:07:59,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-28 18:07:59,691 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:07:59,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:07:59,692 INFO L85 PathProgramCache]: Analyzing trace with hash 378659547, now seen corresponding path program 3 times [2023-08-28 18:07:59,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:07:59,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708214128] [2023-08-28 18:07:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:07:59,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:07:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:08:00,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:08:00,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:08:00,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708214128] [2023-08-28 18:08:00,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708214128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:08:00,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:08:00,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:08:00,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800858933] [2023-08-28 18:08:00,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:08:00,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:08:00,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:08:00,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:08:00,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:08:00,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:08:00,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 563 transitions, 13078 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:08:00,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:08:00,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:08:00,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:08:14,905 INFO L130 PetriNetUnfolder]: 24854/57788 cut-off events. [2023-08-28 18:08:14,905 INFO L131 PetriNetUnfolder]: For 1162074/1164035 co-relation queries the response was YES. [2023-08-28 18:08:15,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296304 conditions, 57788 events. 24854/57788 cut-off events. For 1162074/1164035 co-relation queries the response was YES. Maximal size of possible extension queue 1244. Compared 650469 event pairs, 3396 based on Foata normal form. 729/55182 useless extension candidates. Maximal degree in co-relation 296214. Up to 26778 conditions per place. [2023-08-28 18:08:16,152 INFO L137 encePairwiseOnDemand]: 311/331 looper letters, 455 selfloop transitions, 82 changer transitions 0/731 dead transitions. [2023-08-28 18:08:16,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 731 transitions, 17069 flow [2023-08-28 18:08:16,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-28 18:08:16,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-28 18:08:16,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1843 transitions. [2023-08-28 18:08:16,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061796209832463 [2023-08-28 18:08:16,154 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1843 transitions. [2023-08-28 18:08:16,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1843 transitions. [2023-08-28 18:08:16,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:08:16,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1843 transitions. [2023-08-28 18:08:16,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 167.54545454545453) internal successors, (1843), 11 states have internal predecessors, (1843), 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) [2023-08-28 18:08:16,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 331.0) internal successors, (3972), 12 states have internal predecessors, (3972), 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) [2023-08-28 18:08:16,158 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 331.0) internal successors, (3972), 12 states have internal predecessors, (3972), 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) [2023-08-28 18:08:16,158 INFO L175 Difference]: Start difference. First operand has 348 places, 563 transitions, 13078 flow. Second operand 11 states and 1843 transitions. [2023-08-28 18:08:16,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 731 transitions, 17069 flow [2023-08-28 18:08:19,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 731 transitions, 16820 flow, removed 26 selfloop flow, removed 12 redundant places. [2023-08-28 18:08:19,239 INFO L231 Difference]: Finished difference. Result has 352 places, 590 transitions, 13614 flow [2023-08-28 18:08:19,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=12861, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13614, PETRI_PLACES=352, PETRI_TRANSITIONS=590} [2023-08-28 18:08:19,240 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 206 predicate places. [2023-08-28 18:08:19,240 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 590 transitions, 13614 flow [2023-08-28 18:08:19,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:08:19,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:08:19,240 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:08:19,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-28 18:08:19,241 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:08:19,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:08:19,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1310277559, now seen corresponding path program 4 times [2023-08-28 18:08:19,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:08:19,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637416998] [2023-08-28 18:08:19,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:08:19,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:08:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:08:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:08:19,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:08:19,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637416998] [2023-08-28 18:08:19,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637416998] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:08:19,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:08:19,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:08:19,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686236610] [2023-08-28 18:08:19,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:08:19,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:08:19,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:08:19,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:08:19,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:08:19,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:08:19,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 590 transitions, 13614 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:08:19,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:08:19,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:08:19,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:08:34,567 INFO L130 PetriNetUnfolder]: 24782/56698 cut-off events. [2023-08-28 18:08:34,567 INFO L131 PetriNetUnfolder]: For 1149310/1151133 co-relation queries the response was YES. [2023-08-28 18:08:35,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299034 conditions, 56698 events. 24782/56698 cut-off events. For 1149310/1151133 co-relation queries the response was YES. Maximal size of possible extension queue 1208. Compared 631263 event pairs, 1733 based on Foata normal form. 641/54372 useless extension candidates. Maximal degree in co-relation 298942. Up to 28038 conditions per place. [2023-08-28 18:08:35,883 INFO L137 encePairwiseOnDemand]: 302/331 looper letters, 583 selfloop transitions, 135 changer transitions 0/912 dead transitions. [2023-08-28 18:08:35,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 912 transitions, 23999 flow [2023-08-28 18:08:35,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-28 18:08:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-28 18:08:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2356 transitions. [2023-08-28 18:08:35,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084160552438498 [2023-08-28 18:08:35,886 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2356 transitions. [2023-08-28 18:08:35,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2356 transitions. [2023-08-28 18:08:35,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:08:35,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2356 transitions. [2023-08-28 18:08:35,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 168.28571428571428) internal successors, (2356), 14 states have internal predecessors, (2356), 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) [2023-08-28 18:08:35,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 331.0) internal successors, (4965), 15 states have internal predecessors, (4965), 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) [2023-08-28 18:08:35,891 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 331.0) internal successors, (4965), 15 states have internal predecessors, (4965), 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) [2023-08-28 18:08:35,891 INFO L175 Difference]: Start difference. First operand has 352 places, 590 transitions, 13614 flow. Second operand 14 states and 2356 transitions. [2023-08-28 18:08:35,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 912 transitions, 23999 flow [2023-08-28 18:08:40,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 912 transitions, 23749 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-28 18:08:40,946 INFO L231 Difference]: Finished difference. Result has 365 places, 615 transitions, 14326 flow [2023-08-28 18:08:40,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=13484, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14326, PETRI_PLACES=365, PETRI_TRANSITIONS=615} [2023-08-28 18:08:40,947 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 219 predicate places. [2023-08-28 18:08:40,947 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 615 transitions, 14326 flow [2023-08-28 18:08:40,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:08:40,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:08:40,948 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:08:40,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-28 18:08:40,948 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:08:40,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:08:40,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1621563363, now seen corresponding path program 5 times [2023-08-28 18:08:40,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:08:40,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441884146] [2023-08-28 18:08:40,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:08:40,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:08:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:08:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:08:41,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:08:41,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441884146] [2023-08-28 18:08:41,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441884146] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:08:41,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:08:41,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:08:41,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219999723] [2023-08-28 18:08:41,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:08:41,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:08:41,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:08:41,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:08:41,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:08:41,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:08:41,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 615 transitions, 14326 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:08:41,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:08:41,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:08:41,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:09:00,345 INFO L130 PetriNetUnfolder]: 27184/64536 cut-off events. [2023-08-28 18:09:00,346 INFO L131 PetriNetUnfolder]: For 1290368/1292245 co-relation queries the response was YES. [2023-08-28 18:09:01,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342477 conditions, 64536 events. 27184/64536 cut-off events. For 1290368/1292245 co-relation queries the response was YES. Maximal size of possible extension queue 1302. Compared 729321 event pairs, 3539 based on Foata normal form. 769/61662 useless extension candidates. Maximal degree in co-relation 342381. Up to 29727 conditions per place. [2023-08-28 18:09:02,549 INFO L137 encePairwiseOnDemand]: 308/331 looper letters, 506 selfloop transitions, 156 changer transitions 0/856 dead transitions. [2023-08-28 18:09:02,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 856 transitions, 19426 flow [2023-08-28 18:09:02,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-28 18:09:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-28 18:09:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2356 transitions. [2023-08-28 18:09:02,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084160552438498 [2023-08-28 18:09:02,553 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2356 transitions. [2023-08-28 18:09:02,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2356 transitions. [2023-08-28 18:09:02,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:09:02,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2356 transitions. [2023-08-28 18:09:02,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 168.28571428571428) internal successors, (2356), 14 states have internal predecessors, (2356), 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) [2023-08-28 18:09:02,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 331.0) internal successors, (4965), 15 states have internal predecessors, (4965), 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) [2023-08-28 18:09:02,558 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 331.0) internal successors, (4965), 15 states have internal predecessors, (4965), 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) [2023-08-28 18:09:02,558 INFO L175 Difference]: Start difference. First operand has 365 places, 615 transitions, 14326 flow. Second operand 14 states and 2356 transitions. [2023-08-28 18:09:02,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 856 transitions, 19426 flow [2023-08-28 18:09:08,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 856 transitions, 19287 flow, removed 33 selfloop flow, removed 11 redundant places. [2023-08-28 18:09:08,200 INFO L231 Difference]: Finished difference. Result has 376 places, 669 transitions, 15872 flow [2023-08-28 18:09:08,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=14227, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=15872, PETRI_PLACES=376, PETRI_TRANSITIONS=669} [2023-08-28 18:09:08,201 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 230 predicate places. [2023-08-28 18:09:08,201 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 669 transitions, 15872 flow [2023-08-28 18:09:08,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:09:08,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:09:08,202 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:09:08,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-28 18:09:08,202 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-28 18:09:08,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:09:08,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1906242405, now seen corresponding path program 6 times [2023-08-28 18:09:08,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:09:08,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019044603] [2023-08-28 18:09:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:09:08,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:09:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:09:08,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:09:08,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:09:08,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019044603] [2023-08-28 18:09:08,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019044603] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:09:08,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:09:08,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-28 18:09:08,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143967548] [2023-08-28 18:09:08,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:09:08,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-28 18:09:08,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:09:08,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-28 18:09:08,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-28 18:09:09,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 331 [2023-08-28 18:09:09,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 669 transitions, 15872 flow. Second operand has 11 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 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) [2023-08-28 18:09:09,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:09:09,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 331 [2023-08-28 18:09:09,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand