./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c 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 /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.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 ce64fcfa63b9df647c320ea90e20b624e2dad5b9ca256083b6d2f56c3177560a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:56:46,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:56:46,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:56:46,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:56:46,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:56:46,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:56:46,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:56:46,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:56:46,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:56:46,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:56:46,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:56:46,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:56:46,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:56:46,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:56:46,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:56:46,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:56:46,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:56:46,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:56:46,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:56:46,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:56:46,836 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:56:46,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:56:46,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:56:46,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:56:46,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:56:46,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:56:46,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:56:46,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:56:46,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:56:46,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:56:46,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:56:46,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:56:46,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:56:46,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:56:46,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:56:46,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:56:46,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:56:46,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:56:46,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:56:46,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:56:46,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:56:46,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:56:46,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:56:46,877 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:56:46,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:56:46,878 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:56:46,878 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:56:46,879 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:56:46,879 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:56:46,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:56:46,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:56:46,880 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:56:46,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:56:46,880 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:56:46,881 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:56:46,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:56:46,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:56:46,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:56:46,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:56:46,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:56:46,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:56:46,881 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:56:46,882 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:56:46,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:56:46,882 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:56:46,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:56:46,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:56:46,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:56:46,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:56:46,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:56:46,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:56:46,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:56:46,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:56:46,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:56:46,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:56:46,884 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:56:46,884 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:56:46,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:56:46,884 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce64fcfa63b9df647c320ea90e20b624e2dad5b9ca256083b6d2f56c3177560a [2022-04-18 15:56:47,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:56:47,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:56:47,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:56:47,091 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:56:47,092 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:56:47,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.i [2022-04-18 15:56:47,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5667fa3f/cf622022a5a540eea06616d9423a8e2c/FLAGf9f0798ba [2022-04-18 15:56:47,489 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:56:47,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.i [2022-04-18 15:56:47,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5667fa3f/cf622022a5a540eea06616d9423a8e2c/FLAGf9f0798ba [2022-04-18 15:56:47,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5667fa3f/cf622022a5a540eea06616d9423a8e2c [2022-04-18 15:56:47,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:56:47,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:56:47,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:56:47,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:56:47,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:56:47,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:56:47" (1/1) ... [2022-04-18 15:56:47,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e567db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:47, skipping insertion in model container [2022-04-18 15:56:47,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:56:47" (1/1) ... [2022-04-18 15:56:47,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:56:47,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:56:48,194 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.i[30297,30310] [2022-04-18 15:56:48,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:56:48,206 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:56:48,236 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.i[30297,30310] [2022-04-18 15:56:48,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:56:48,266 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:56:48,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:48 WrapperNode [2022-04-18 15:56:48,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:56:48,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:56:48,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:56:48,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:56:48,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:48" (1/1) ... [2022-04-18 15:56:48,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:48" (1/1) ... [2022-04-18 15:56:48,323 INFO L137 Inliner]: procedures = 170, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 108 [2022-04-18 15:56:48,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:56:48,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:56:48,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:56:48,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:56:48,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:48" (1/1) ... [2022-04-18 15:56:48,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:48" (1/1) ... [2022-04-18 15:56:48,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:48" (1/1) ... [2022-04-18 15:56:48,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:48" (1/1) ... [2022-04-18 15:56:48,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:48" (1/1) ... [2022-04-18 15:56:48,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:48" (1/1) ... [2022-04-18 15:56:48,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:48" (1/1) ... [2022-04-18 15:56:48,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:56:48,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:56:48,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:56:48,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:56:48,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:48" (1/1) ... [2022-04-18 15:56:48,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:56:48,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:56:48,375 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) [2022-04-18 15:56:48,385 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 [2022-04-18 15:56:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-04-18 15:56:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-04-18 15:56:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 15:56:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 15:56:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:56:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:56:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:56:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:56:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:56:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:56:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:56:48,399 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 15:56:48,507 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:56:48,508 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:56:48,664 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:56:48,670 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:56:48,670 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-04-18 15:56:48,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:56:48 BoogieIcfgContainer [2022-04-18 15:56:48,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:56:48,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:56:48,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:56:48,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:56:48,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:56:47" (1/3) ... [2022-04-18 15:56:48,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5fa099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:56:48, skipping insertion in model container [2022-04-18 15:56:48,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:56:48" (2/3) ... [2022-04-18 15:56:48,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5fa099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:56:48, skipping insertion in model container [2022-04-18 15:56:48,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:56:48" (3/3) ... [2022-04-18 15:56:48,678 INFO L111 eAbstractionObserver]: Analyzing ICFG 27_Boop_simple_vf.i [2022-04-18 15:56:48,681 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:56:48,681 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:56:48,681 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-04-18 15:56:48,681 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:56:48,734 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:56:48,766 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:56:48,771 INFO L340 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 [2022-04-18 15:56:48,771 INFO L341 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-04-18 15:56:48,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 157 places, 163 transitions, 336 flow [2022-04-18 15:56:48,815 INFO L129 PetriNetUnfolder]: 13/173 cut-off events. [2022-04-18 15:56:48,816 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:56:48,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 173 events. 13/173 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 362 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 154. Up to 4 conditions per place. [2022-04-18 15:56:48,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 163 transitions, 336 flow [2022-04-18 15:56:48,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 162 transitions, 332 flow [2022-04-18 15:56:48,830 INFO L129 PetriNetUnfolder]: 1/41 cut-off events. [2022-04-18 15:56:48,833 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:56:48,833 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:48,833 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:48,834 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-04-18 15:56:48,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:48,839 INFO L85 PathProgramCache]: Analyzing trace with hash -705481464, now seen corresponding path program 1 times [2022-04-18 15:56:48,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:48,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068681879] [2022-04-18 15:56:48,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:48,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:49,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:49,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068681879] [2022-04-18 15:56:49,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068681879] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:49,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:49,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:56:49,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512378194] [2022-04-18 15:56:49,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:49,015 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:56:49,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:49,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:56:49,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:56:49,039 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 163 [2022-04-18 15:56:49,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 162 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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) [2022-04-18 15:56:49,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:49,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 163 [2022-04-18 15:56:49,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:49,194 INFO L129 PetriNetUnfolder]: 180/907 cut-off events. [2022-04-18 15:56:49,195 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-04-18 15:56:49,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 907 events. 180/907 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5461 event pairs, 123 based on Foata normal form. 217/933 useless extension candidates. Maximal degree in co-relation 1261. Up to 305 conditions per place. [2022-04-18 15:56:49,204 INFO L132 encePairwiseOnDemand]: 149/163 looper letters, 32 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2022-04-18 15:56:49,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 157 transitions, 399 flow [2022-04-18 15:56:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:56:49,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:56:49,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2022-04-18 15:56:49,219 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8732106339468303 [2022-04-18 15:56:49,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2022-04-18 15:56:49,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2022-04-18 15:56:49,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:49,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2022-04-18 15:56:49,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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) [2022-04-18 15:56:49,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2022-04-18 15:56:49,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2022-04-18 15:56:49,235 INFO L186 Difference]: Start difference. First operand has 156 places, 162 transitions, 332 flow. Second operand 3 states and 427 transitions. [2022-04-18 15:56:49,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 157 transitions, 399 flow [2022-04-18 15:56:49,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 157 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:56:49,242 INFO L242 Difference]: Finished difference. Result has 152 places, 152 transitions, 341 flow [2022-04-18 15:56:49,248 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=152, PETRI_TRANSITIONS=152} [2022-04-18 15:56:49,251 INFO L335 CegarLoopForPetriNet]: 156 programPoint places, -4 predicate places. [2022-04-18 15:56:49,251 INFO L478 AbstractCegarLoop]: Abstraction has has 152 places, 152 transitions, 341 flow [2022-04-18 15:56:49,252 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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) [2022-04-18 15:56:49,252 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:49,252 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:49,252 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:56:49,253 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-04-18 15:56:49,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:49,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1564871874, now seen corresponding path program 1 times [2022-04-18 15:56:49,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:49,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402512412] [2022-04-18 15:56:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:49,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:49,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:49,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:49,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402512412] [2022-04-18 15:56:49,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402512412] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:49,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:49,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:56:49,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680952179] [2022-04-18 15:56:49,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:49,311 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:56:49,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:49,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:56:49,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:56:49,312 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 163 [2022-04-18 15:56:49,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 152 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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) [2022-04-18 15:56:49,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:49,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 163 [2022-04-18 15:56:49,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:49,383 INFO L129 PetriNetUnfolder]: 52/690 cut-off events. [2022-04-18 15:56:49,383 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-04-18 15:56:49,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 690 events. 52/690 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4094 event pairs, 7 based on Foata normal form. 0/558 useless extension candidates. Maximal degree in co-relation 771. Up to 29 conditions per place. [2022-04-18 15:56:49,389 INFO L132 encePairwiseOnDemand]: 159/163 looper letters, 10 selfloop transitions, 3 changer transitions 0/157 dead transitions. [2022-04-18 15:56:49,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 157 transitions, 377 flow [2022-04-18 15:56:49,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:56:49,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:56:49,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2022-04-18 15:56:49,391 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9243353783231084 [2022-04-18 15:56:49,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2022-04-18 15:56:49,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2022-04-18 15:56:49,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:49,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2022-04-18 15:56:49,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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) [2022-04-18 15:56:49,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2022-04-18 15:56:49,394 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2022-04-18 15:56:49,394 INFO L186 Difference]: Start difference. First operand has 152 places, 152 transitions, 341 flow. Second operand 3 states and 452 transitions. [2022-04-18 15:56:49,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 157 transitions, 377 flow [2022-04-18 15:56:49,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 157 transitions, 367 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:56:49,401 INFO L242 Difference]: Finished difference. Result has 154 places, 155 transitions, 357 flow [2022-04-18 15:56:49,401 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=357, PETRI_PLACES=154, PETRI_TRANSITIONS=155} [2022-04-18 15:56:49,402 INFO L335 CegarLoopForPetriNet]: 156 programPoint places, -2 predicate places. [2022-04-18 15:56:49,402 INFO L478 AbstractCegarLoop]: Abstraction has has 154 places, 155 transitions, 357 flow [2022-04-18 15:56:49,402 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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) [2022-04-18 15:56:49,403 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:49,403 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:49,403 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:56:49,404 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-04-18 15:56:49,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:49,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2111636225, now seen corresponding path program 1 times [2022-04-18 15:56:49,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:49,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650967969] [2022-04-18 15:56:49,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:49,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:49,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:49,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650967969] [2022-04-18 15:56:49,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650967969] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:49,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:49,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:56:49,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398991042] [2022-04-18 15:56:49,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:49,469 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:56:49,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:49,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:56:49,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:56:49,472 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 163 [2022-04-18 15:56:49,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 155 transitions, 357 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2022-04-18 15:56:49,473 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:49,473 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 163 [2022-04-18 15:56:49,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:49,622 INFO L129 PetriNetUnfolder]: 202/1563 cut-off events. [2022-04-18 15:56:49,622 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-04-18 15:56:49,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1988 conditions, 1563 events. 202/1563 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11877 event pairs, 99 based on Foata normal form. 0/1233 useless extension candidates. Maximal degree in co-relation 1957. Up to 302 conditions per place. [2022-04-18 15:56:49,635 INFO L132 encePairwiseOnDemand]: 157/163 looper letters, 23 selfloop transitions, 5 changer transitions 0/164 dead transitions. [2022-04-18 15:56:49,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 164 transitions, 434 flow [2022-04-18 15:56:49,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:56:49,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:56:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2022-04-18 15:56:49,637 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8875255623721882 [2022-04-18 15:56:49,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2022-04-18 15:56:49,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2022-04-18 15:56:49,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:49,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2022-04-18 15:56:49,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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) [2022-04-18 15:56:49,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2022-04-18 15:56:49,641 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2022-04-18 15:56:49,641 INFO L186 Difference]: Start difference. First operand has 154 places, 155 transitions, 357 flow. Second operand 3 states and 434 transitions. [2022-04-18 15:56:49,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 164 transitions, 434 flow [2022-04-18 15:56:49,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 164 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:56:49,645 INFO L242 Difference]: Finished difference. Result has 156 places, 159 transitions, 389 flow [2022-04-18 15:56:49,646 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=156, PETRI_TRANSITIONS=159} [2022-04-18 15:56:49,647 INFO L335 CegarLoopForPetriNet]: 156 programPoint places, 0 predicate places. [2022-04-18 15:56:49,647 INFO L478 AbstractCegarLoop]: Abstraction has has 156 places, 159 transitions, 389 flow [2022-04-18 15:56:49,648 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2022-04-18 15:56:49,648 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:49,648 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:49,648 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:56:49,648 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-04-18 15:56:49,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:49,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1523380482, now seen corresponding path program 1 times [2022-04-18 15:56:49,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:49,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069019800] [2022-04-18 15:56:49,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:49,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:49,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:49,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:49,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069019800] [2022-04-18 15:56:49,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069019800] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:49,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:49,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:56:49,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176120393] [2022-04-18 15:56:49,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:49,708 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:56:49,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:49,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:56:49,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:56:49,712 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 163 [2022-04-18 15:56:49,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 159 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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) [2022-04-18 15:56:49,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:49,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 163 [2022-04-18 15:56:49,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:49,756 INFO L129 PetriNetUnfolder]: 31/585 cut-off events. [2022-04-18 15:56:49,756 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-04-18 15:56:49,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 585 events. 31/585 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3355 event pairs, 0 based on Foata normal form. 0/475 useless extension candidates. Maximal degree in co-relation 618. Up to 14 conditions per place. [2022-04-18 15:56:49,761 INFO L132 encePairwiseOnDemand]: 159/163 looper letters, 5 selfloop transitions, 3 changer transitions 0/151 dead transitions. [2022-04-18 15:56:49,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 151 transitions, 366 flow [2022-04-18 15:56:49,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:56:49,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:56:49,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2022-04-18 15:56:49,763 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9263803680981595 [2022-04-18 15:56:49,763 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2022-04-18 15:56:49,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2022-04-18 15:56:49,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:49,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2022-04-18 15:56:49,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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) [2022-04-18 15:56:49,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2022-04-18 15:56:49,768 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2022-04-18 15:56:49,768 INFO L186 Difference]: Start difference. First operand has 156 places, 159 transitions, 389 flow. Second operand 3 states and 453 transitions. [2022-04-18 15:56:49,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 151 transitions, 366 flow [2022-04-18 15:56:49,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 151 transitions, 342 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-04-18 15:56:49,772 INFO L242 Difference]: Finished difference. Result has 152 places, 150 transitions, 337 flow [2022-04-18 15:56:49,773 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=152, PETRI_TRANSITIONS=150} [2022-04-18 15:56:49,774 INFO L335 CegarLoopForPetriNet]: 156 programPoint places, -4 predicate places. [2022-04-18 15:56:49,774 INFO L478 AbstractCegarLoop]: Abstraction has has 152 places, 150 transitions, 337 flow [2022-04-18 15:56:49,775 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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) [2022-04-18 15:56:49,778 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:49,778 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:49,778 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:56:49,778 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-04-18 15:56:49,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:49,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1194238936, now seen corresponding path program 1 times [2022-04-18 15:56:49,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:49,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32882006] [2022-04-18 15:56:49,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:49,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:49,801 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:56:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:49,834 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:56:49,835 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:56:49,835 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2022-04-18 15:56:49,837 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2022-04-18 15:56:49,837 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2022-04-18 15:56:49,837 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2022-04-18 15:56:49,837 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2022-04-18 15:56:49,837 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2022-04-18 15:56:49,838 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2022-04-18 15:56:49,838 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2022-04-18 15:56:49,838 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2022-04-18 15:56:49,838 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2022-04-18 15:56:49,838 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2022-04-18 15:56:49,839 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2022-04-18 15:56:49,839 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2022-04-18 15:56:49,839 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2022-04-18 15:56:49,839 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2022-04-18 15:56:49,839 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2022-04-18 15:56:49,839 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2022-04-18 15:56:49,840 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2022-04-18 15:56:49,840 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 36 remaining) [2022-04-18 15:56:49,840 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2022-04-18 15:56:49,840 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2022-04-18 15:56:49,840 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2022-04-18 15:56:49,840 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2022-04-18 15:56:49,841 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2022-04-18 15:56:49,841 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2022-04-18 15:56:49,841 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2022-04-18 15:56:49,844 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2022-04-18 15:56:49,844 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2022-04-18 15:56:49,844 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2022-04-18 15:56:49,844 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2022-04-18 15:56:49,844 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2022-04-18 15:56:49,844 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2022-04-18 15:56:49,845 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2022-04-18 15:56:49,845 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2022-04-18 15:56:49,845 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2022-04-18 15:56:49,845 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2022-04-18 15:56:49,845 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:56:49,848 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-18 15:56:49,849 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:56:49,849 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:56:49,905 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:56:49,907 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:56:49,908 INFO L340 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 [2022-04-18 15:56:49,908 INFO L341 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-04-18 15:56:49,914 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 275 places, 288 transitions, 600 flow [2022-04-18 15:56:49,935 INFO L129 PetriNetUnfolder]: 17/223 cut-off events. [2022-04-18 15:56:49,935 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 15:56:49,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 223 events. 17/223 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 655 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 232. Up to 6 conditions per place. [2022-04-18 15:56:49,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 288 transitions, 600 flow [2022-04-18 15:56:49,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 199 transitions, 413 flow [2022-04-18 15:56:49,943 INFO L129 PetriNetUnfolder]: 1/41 cut-off events. [2022-04-18 15:56:49,943 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:56:49,944 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:49,944 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:49,944 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 15:56:49,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1136655568, now seen corresponding path program 1 times [2022-04-18 15:56:49,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:49,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260324894] [2022-04-18 15:56:49,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:49,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:49,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:49,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260324894] [2022-04-18 15:56:49,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260324894] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:49,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:49,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:56:49,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709661876] [2022-04-18 15:56:49,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:49,983 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:56:49,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:49,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:56:49,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:56:49,985 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 288 [2022-04-18 15:56:49,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 199 transitions, 413 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2022-04-18 15:56:49,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:49,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 288 [2022-04-18 15:56:49,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:50,708 INFO L129 PetriNetUnfolder]: 2433/7729 cut-off events. [2022-04-18 15:56:50,709 INFO L130 PetriNetUnfolder]: For 496/496 co-relation queries the response was YES. [2022-04-18 15:56:50,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11841 conditions, 7729 events. 2433/7729 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 74547 event pairs, 1870 based on Foata normal form. 1778/7685 useless extension candidates. Maximal degree in co-relation 11811. Up to 3286 conditions per place. [2022-04-18 15:56:50,813 INFO L132 encePairwiseOnDemand]: 271/288 looper letters, 44 selfloop transitions, 7 changer transitions 0/200 dead transitions. [2022-04-18 15:56:50,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 200 transitions, 525 flow [2022-04-18 15:56:50,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:56:50,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:56:50,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2022-04-18 15:56:50,816 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8321759259259259 [2022-04-18 15:56:50,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions. [2022-04-18 15:56:50,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions. [2022-04-18 15:56:50,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:50,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions. [2022-04-18 15:56:50,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 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) [2022-04-18 15:56:50,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-04-18 15:56:50,820 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-04-18 15:56:50,820 INFO L186 Difference]: Start difference. First operand has 192 places, 199 transitions, 413 flow. Second operand 3 states and 719 transitions. [2022-04-18 15:56:50,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 200 transitions, 525 flow [2022-04-18 15:56:50,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 200 transitions, 522 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-04-18 15:56:50,825 INFO L242 Difference]: Finished difference. Result has 188 places, 190 transitions, 434 flow [2022-04-18 15:56:50,825 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=188, PETRI_TRANSITIONS=190} [2022-04-18 15:56:50,827 INFO L335 CegarLoopForPetriNet]: 192 programPoint places, -4 predicate places. [2022-04-18 15:56:50,827 INFO L478 AbstractCegarLoop]: Abstraction has has 188 places, 190 transitions, 434 flow [2022-04-18 15:56:50,828 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2022-04-18 15:56:50,829 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:50,830 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:50,830 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:56:50,830 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 15:56:50,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:50,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1737447303, now seen corresponding path program 1 times [2022-04-18 15:56:50,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:50,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302700071] [2022-04-18 15:56:50,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:50,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:50,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:50,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302700071] [2022-04-18 15:56:50,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302700071] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:50,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:50,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:56:50,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349016112] [2022-04-18 15:56:50,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:50,872 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:56:50,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:50,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:56:50,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:56:50,874 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 288 [2022-04-18 15:56:50,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 190 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 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) [2022-04-18 15:56:50,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:50,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 288 [2022-04-18 15:56:50,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:51,231 INFO L129 PetriNetUnfolder]: 493/4056 cut-off events. [2022-04-18 15:56:51,231 INFO L130 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2022-04-18 15:56:51,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4957 conditions, 4056 events. 493/4056 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 42659 event pairs, 101 based on Foata normal form. 0/3230 useless extension candidates. Maximal degree in co-relation 4926. Up to 250 conditions per place. [2022-04-18 15:56:51,270 INFO L132 encePairwiseOnDemand]: 281/288 looper letters, 15 selfloop transitions, 5 changer transitions 0/198 dead transitions. [2022-04-18 15:56:51,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 198 transitions, 495 flow [2022-04-18 15:56:51,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:56:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:56:51,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-04-18 15:56:51,275 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9143518518518519 [2022-04-18 15:56:51,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-04-18 15:56:51,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-04-18 15:56:51,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:51,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-04-18 15:56:51,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 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) [2022-04-18 15:56:51,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-04-18 15:56:51,279 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-04-18 15:56:51,279 INFO L186 Difference]: Start difference. First operand has 188 places, 190 transitions, 434 flow. Second operand 3 states and 790 transitions. [2022-04-18 15:56:51,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 198 transitions, 495 flow [2022-04-18 15:56:51,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 198 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:56:51,284 INFO L242 Difference]: Finished difference. Result has 190 places, 195 transitions, 464 flow [2022-04-18 15:56:51,285 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=190, PETRI_TRANSITIONS=195} [2022-04-18 15:56:51,286 INFO L335 CegarLoopForPetriNet]: 192 programPoint places, -2 predicate places. [2022-04-18 15:56:51,286 INFO L478 AbstractCegarLoop]: Abstraction has has 190 places, 195 transitions, 464 flow [2022-04-18 15:56:51,287 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 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) [2022-04-18 15:56:51,287 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:51,287 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:51,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:56:51,287 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 15:56:51,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:51,288 INFO L85 PathProgramCache]: Analyzing trace with hash -806239621, now seen corresponding path program 1 times [2022-04-18 15:56:51,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:51,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518410570] [2022-04-18 15:56:51,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:51,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:51,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:51,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518410570] [2022-04-18 15:56:51,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518410570] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:51,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:51,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:56:51,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324835870] [2022-04-18 15:56:51,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:51,320 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:56:51,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:51,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:56:51,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:56:51,321 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 288 [2022-04-18 15:56:51,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 195 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2022-04-18 15:56:51,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:51,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 288 [2022-04-18 15:56:51,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:52,965 INFO L129 PetriNetUnfolder]: 3855/19917 cut-off events. [2022-04-18 15:56:52,965 INFO L130 PetriNetUnfolder]: For 597/604 co-relation queries the response was YES. [2022-04-18 15:56:53,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26535 conditions, 19917 events. 3855/19917 cut-off events. For 597/604 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 261256 event pairs, 2384 based on Foata normal form. 0/15452 useless extension candidates. Maximal degree in co-relation 26503. Up to 5096 conditions per place. [2022-04-18 15:56:53,126 INFO L132 encePairwiseOnDemand]: 280/288 looper letters, 35 selfloop transitions, 7 changer transitions 0/211 dead transitions. [2022-04-18 15:56:53,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 211 transitions, 588 flow [2022-04-18 15:56:53,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:56:53,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:56:53,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 751 transitions. [2022-04-18 15:56:53,129 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8692129629629629 [2022-04-18 15:56:53,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 751 transitions. [2022-04-18 15:56:53,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 751 transitions. [2022-04-18 15:56:53,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:53,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 751 transitions. [2022-04-18 15:56:53,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 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) [2022-04-18 15:56:53,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-04-18 15:56:53,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-04-18 15:56:53,133 INFO L186 Difference]: Start difference. First operand has 190 places, 195 transitions, 464 flow. Second operand 3 states and 751 transitions. [2022-04-18 15:56:53,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 211 transitions, 588 flow [2022-04-18 15:56:53,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 211 transitions, 578 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:56:53,137 INFO L242 Difference]: Finished difference. Result has 192 places, 201 transitions, 508 flow [2022-04-18 15:56:53,137 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=192, PETRI_TRANSITIONS=201} [2022-04-18 15:56:53,138 INFO L335 CegarLoopForPetriNet]: 192 programPoint places, 0 predicate places. [2022-04-18 15:56:53,138 INFO L478 AbstractCegarLoop]: Abstraction has has 192 places, 201 transitions, 508 flow [2022-04-18 15:56:53,138 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2022-04-18 15:56:53,138 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:53,139 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:53,139 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:56:53,139 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 15:56:53,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:53,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1642454241, now seen corresponding path program 1 times [2022-04-18 15:56:53,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:53,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119020947] [2022-04-18 15:56:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:53,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:53,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:53,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:53,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119020947] [2022-04-18 15:56:53,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119020947] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:53,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:53,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:56:53,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851227580] [2022-04-18 15:56:53,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:53,233 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:56:53,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:53,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:56:53,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:56:53,234 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 288 [2022-04-18 15:56:53,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 201 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 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) [2022-04-18 15:56:53,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:53,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 288 [2022-04-18 15:56:53,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:53,451 INFO L129 PetriNetUnfolder]: 276/3223 cut-off events. [2022-04-18 15:56:53,451 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-04-18 15:56:53,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3689 conditions, 3223 events. 276/3223 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 33796 event pairs, 37 based on Foata normal form. 0/2562 useless extension candidates. Maximal degree in co-relation 3655. Up to 149 conditions per place. [2022-04-18 15:56:53,490 INFO L132 encePairwiseOnDemand]: 282/288 looper letters, 9 selfloop transitions, 4 changer transitions 0/191 dead transitions. [2022-04-18 15:56:53,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 191 transitions, 484 flow [2022-04-18 15:56:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:56:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:56:53,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 798 transitions. [2022-04-18 15:56:53,492 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9236111111111112 [2022-04-18 15:56:53,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 798 transitions. [2022-04-18 15:56:53,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 798 transitions. [2022-04-18 15:56:53,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:53,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 798 transitions. [2022-04-18 15:56:53,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 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) [2022-04-18 15:56:53,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-04-18 15:56:53,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-04-18 15:56:53,496 INFO L186 Difference]: Start difference. First operand has 192 places, 201 transitions, 508 flow. Second operand 3 states and 798 transitions. [2022-04-18 15:56:53,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 191 transitions, 484 flow [2022-04-18 15:56:53,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 191 transitions, 472 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-04-18 15:56:53,499 INFO L242 Difference]: Finished difference. Result has 190 places, 189 transitions, 458 flow [2022-04-18 15:56:53,500 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=190, PETRI_TRANSITIONS=189} [2022-04-18 15:56:53,501 INFO L335 CegarLoopForPetriNet]: 192 programPoint places, -2 predicate places. [2022-04-18 15:56:53,501 INFO L478 AbstractCegarLoop]: Abstraction has has 190 places, 189 transitions, 458 flow [2022-04-18 15:56:53,502 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 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) [2022-04-18 15:56:53,502 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:53,502 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:53,502 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 15:56:53,502 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 15:56:53,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:53,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1992872394, now seen corresponding path program 1 times [2022-04-18 15:56:53,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:53,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100674171] [2022-04-18 15:56:53,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:53,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:53,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:53,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100674171] [2022-04-18 15:56:53,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100674171] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:53,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:53,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:56:53,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234805508] [2022-04-18 15:56:53,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:53,524 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:56:53,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:53,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:56:53,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:56:53,525 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 288 [2022-04-18 15:56:53,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 189 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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) [2022-04-18 15:56:53,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:53,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 288 [2022-04-18 15:56:53,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:54,103 INFO L129 PetriNetUnfolder]: 1012/7457 cut-off events. [2022-04-18 15:56:54,104 INFO L130 PetriNetUnfolder]: For 549/561 co-relation queries the response was YES. [2022-04-18 15:56:54,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10079 conditions, 7457 events. 1012/7457 cut-off events. For 549/561 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 90906 event pairs, 231 based on Foata normal form. 6/6057 useless extension candidates. Maximal degree in co-relation 10043. Up to 754 conditions per place. [2022-04-18 15:56:54,183 INFO L132 encePairwiseOnDemand]: 282/288 looper letters, 25 selfloop transitions, 8 changer transitions 0/203 dead transitions. [2022-04-18 15:56:54,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 203 transitions, 580 flow [2022-04-18 15:56:54,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:56:54,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:56:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 787 transitions. [2022-04-18 15:56:54,185 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9108796296296297 [2022-04-18 15:56:54,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 787 transitions. [2022-04-18 15:56:54,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 787 transitions. [2022-04-18 15:56:54,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:54,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 787 transitions. [2022-04-18 15:56:54,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 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) [2022-04-18 15:56:54,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-04-18 15:56:54,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-04-18 15:56:54,189 INFO L186 Difference]: Start difference. First operand has 190 places, 189 transitions, 458 flow. Second operand 3 states and 787 transitions. [2022-04-18 15:56:54,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 203 transitions, 580 flow [2022-04-18 15:56:54,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 203 transitions, 572 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:56:54,194 INFO L242 Difference]: Finished difference. Result has 192 places, 195 transitions, 516 flow [2022-04-18 15:56:54,194 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=516, PETRI_PLACES=192, PETRI_TRANSITIONS=195} [2022-04-18 15:56:54,195 INFO L335 CegarLoopForPetriNet]: 192 programPoint places, 0 predicate places. [2022-04-18 15:56:54,195 INFO L478 AbstractCegarLoop]: Abstraction has has 192 places, 195 transitions, 516 flow [2022-04-18 15:56:54,195 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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) [2022-04-18 15:56:54,195 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:54,196 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:54,196 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 15:56:54,196 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 15:56:54,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:54,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1571072963, now seen corresponding path program 1 times [2022-04-18 15:56:54,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:54,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949442569] [2022-04-18 15:56:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:54,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:54,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:54,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:54,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949442569] [2022-04-18 15:56:54,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949442569] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:54,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:54,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:56:54,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399055820] [2022-04-18 15:56:54,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:54,214 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:56:54,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:54,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:56:54,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:56:54,216 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 288 [2022-04-18 15:56:54,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 195 transitions, 516 flow. Second operand has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 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) [2022-04-18 15:56:54,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:54,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 288 [2022-04-18 15:56:54,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:56:54,261 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([704] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][92], [Black: 284#true, 308#true, 32#L721-4true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 302#true, 164#L746-6true, 56#L692-2true, Black: 298#(= 0 ~release_thr1~0), 197#L692-1true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), thr1Thread1of2ForFork1InUse, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-04-18 15:56:54,262 INFO L384 tUnfolder$Statistics]: this new event has 61 ancestors and is cut-off event [2022-04-18 15:56:54,262 INFO L387 tUnfolder$Statistics]: existing Event has 58 ancestors and is cut-off event [2022-04-18 15:56:54,262 INFO L387 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-04-18 15:56:54,262 INFO L387 tUnfolder$Statistics]: existing Event has 58 ancestors and is cut-off event [2022-04-18 15:56:54,264 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([704] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][92], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 32#L721-4true, 164#L746-6true, 302#true, 56#L692-2true, Black: 296#true, 197#L692-1true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), thr1Thread1of2ForFork1InUse, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-04-18 15:56:54,264 INFO L384 tUnfolder$Statistics]: this new event has 61 ancestors and is cut-off event [2022-04-18 15:56:54,264 INFO L387 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-04-18 15:56:54,264 INFO L387 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-04-18 15:56:54,264 INFO L387 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-04-18 15:56:54,266 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][87], [Black: 284#true, 308#true, 32#L721-4true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 122#L692-2true, 164#L746-6true, 302#true, 153#L692-1true, Black: 296#true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), thr1Thread1of2ForFork1InUse, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-04-18 15:56:54,266 INFO L384 tUnfolder$Statistics]: this new event has 61 ancestors and is cut-off event [2022-04-18 15:56:54,266 INFO L387 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-04-18 15:56:54,266 INFO L387 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-04-18 15:56:54,266 INFO L387 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-04-18 15:56:54,270 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][87], [Black: 284#true, 308#true, 32#L721-4true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 122#L692-2true, 164#L746-6true, 302#true, Black: 298#(= 0 ~release_thr1~0), 153#L692-1true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), thr1Thread1of2ForFork1InUse, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-04-18 15:56:54,271 INFO L384 tUnfolder$Statistics]: this new event has 61 ancestors and is cut-off event [2022-04-18 15:56:54,271 INFO L387 tUnfolder$Statistics]: existing Event has 58 ancestors and is cut-off event [2022-04-18 15:56:54,271 INFO L387 tUnfolder$Statistics]: existing Event has 58 ancestors and is cut-off event [2022-04-18 15:56:54,271 INFO L387 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-04-18 15:56:54,284 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([704] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][47], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 164#L746-6true, 302#true, 56#L692-2true, Black: 296#true, 197#L692-1true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 124#L722-2true, thr1Thread1of2ForFork1InUse, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-04-18 15:56:54,284 INFO L384 tUnfolder$Statistics]: this new event has 62 ancestors and is cut-off event [2022-04-18 15:56:54,284 INFO L387 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-04-18 15:56:54,285 INFO L387 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-04-18 15:56:54,285 INFO L387 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-04-18 15:56:54,289 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([704] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][47], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 302#true, 164#L746-6true, 56#L692-2true, Black: 298#(= 0 ~release_thr1~0), 197#L692-1true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), thr1Thread1of2ForFork1InUse, 124#L722-2true, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-04-18 15:56:54,289 INFO L384 tUnfolder$Statistics]: this new event has 62 ancestors and is cut-off event [2022-04-18 15:56:54,289 INFO L387 tUnfolder$Statistics]: existing Event has 59 ancestors and is cut-off event [2022-04-18 15:56:54,290 INFO L387 tUnfolder$Statistics]: existing Event has 59 ancestors and is cut-off event [2022-04-18 15:56:54,290 INFO L387 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-04-18 15:56:54,294 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][57], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 122#L692-2true, 164#L746-6true, 302#true, 153#L692-1true, Black: 296#true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 124#L722-2true, thr1Thread1of2ForFork1InUse, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-04-18 15:56:54,294 INFO L384 tUnfolder$Statistics]: this new event has 62 ancestors and is cut-off event [2022-04-18 15:56:54,294 INFO L387 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-04-18 15:56:54,294 INFO L387 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-04-18 15:56:54,295 INFO L387 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-04-18 15:56:54,295 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][57], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 164#L746-6true, 122#L692-2true, 302#true, 153#L692-1true, Black: 298#(= 0 ~release_thr1~0), thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 124#L722-2true, thr1Thread1of2ForFork1InUse, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-04-18 15:56:54,295 INFO L384 tUnfolder$Statistics]: this new event has 62 ancestors and is cut-off event [2022-04-18 15:56:54,295 INFO L387 tUnfolder$Statistics]: existing Event has 59 ancestors and is cut-off event [2022-04-18 15:56:54,295 INFO L387 tUnfolder$Statistics]: existing Event has 59 ancestors and is cut-off event [2022-04-18 15:56:54,296 INFO L387 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-04-18 15:56:54,303 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][57], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 164#L746-6true, 302#true, 153#L692-1true, Black: 296#true, 197#L692-1true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), thr1Thread1of2ForFork1InUse, 181#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-04-18 15:56:54,304 INFO L384 tUnfolder$Statistics]: this new event has 63 ancestors and is cut-off event [2022-04-18 15:56:54,304 INFO L387 tUnfolder$Statistics]: existing Event has 60 ancestors and is cut-off event [2022-04-18 15:56:54,304 INFO L387 tUnfolder$Statistics]: existing Event has 60 ancestors and is cut-off event [2022-04-18 15:56:54,304 INFO L387 tUnfolder$Statistics]: existing Event has 60 ancestors and is cut-off event [2022-04-18 15:56:54,315 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][57], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 164#L746-6true, 122#L692-2true, 302#true, 153#L692-1true, Black: 296#true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), thr1Thread1of2ForFork1InUse, 181#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-04-18 15:56:54,316 INFO L384 tUnfolder$Statistics]: this new event has 64 ancestors and is cut-off event [2022-04-18 15:56:54,316 INFO L387 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-04-18 15:56:54,316 INFO L387 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-04-18 15:56:54,316 INFO L387 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-04-18 15:56:55,146 INFO L129 PetriNetUnfolder]: 1697/13287 cut-off events. [2022-04-18 15:56:55,147 INFO L130 PetriNetUnfolder]: For 705/721 co-relation queries the response was YES. [2022-04-18 15:56:55,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16968 conditions, 13287 events. 1697/13287 cut-off events. For 705/721 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 166969 event pairs, 316 based on Foata normal form. 3/10607 useless extension candidates. Maximal degree in co-relation 16932. Up to 909 conditions per place. [2022-04-18 15:56:55,284 INFO L132 encePairwiseOnDemand]: 283/288 looper letters, 18 selfloop transitions, 4 changer transitions 0/205 dead transitions. [2022-04-18 15:56:55,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 205 transitions, 588 flow [2022-04-18 15:56:55,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:56:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:56:55,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 791 transitions. [2022-04-18 15:56:55,287 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9155092592592593 [2022-04-18 15:56:55,287 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 791 transitions. [2022-04-18 15:56:55,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 791 transitions. [2022-04-18 15:56:55,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:56:55,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 791 transitions. [2022-04-18 15:56:55,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 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) [2022-04-18 15:56:55,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-04-18 15:56:55,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-04-18 15:56:55,291 INFO L186 Difference]: Start difference. First operand has 192 places, 195 transitions, 516 flow. Second operand 3 states and 791 transitions. [2022-04-18 15:56:55,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 205 transitions, 588 flow [2022-04-18 15:56:55,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 205 transitions, 572 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:56:55,296 INFO L242 Difference]: Finished difference. Result has 194 places, 199 transitions, 534 flow [2022-04-18 15:56:55,296 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=534, PETRI_PLACES=194, PETRI_TRANSITIONS=199} [2022-04-18 15:56:55,297 INFO L335 CegarLoopForPetriNet]: 192 programPoint places, 2 predicate places. [2022-04-18 15:56:55,297 INFO L478 AbstractCegarLoop]: Abstraction has has 194 places, 199 transitions, 534 flow [2022-04-18 15:56:55,297 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 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) [2022-04-18 15:56:55,297 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:55,297 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:55,298 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-18 15:56:55,298 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 15:56:55,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:55,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2089856119, now seen corresponding path program 1 times [2022-04-18 15:56:55,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:55,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959750924] [2022-04-18 15:56:55,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:55,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:55,323 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:56:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:56:55,332 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:56:55,332 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:56:55,332 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (52 of 53 remaining) [2022-04-18 15:56:55,332 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (51 of 53 remaining) [2022-04-18 15:56:55,333 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (50 of 53 remaining) [2022-04-18 15:56:55,333 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (49 of 53 remaining) [2022-04-18 15:56:55,333 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (48 of 53 remaining) [2022-04-18 15:56:55,333 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (47 of 53 remaining) [2022-04-18 15:56:55,333 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (46 of 53 remaining) [2022-04-18 15:56:55,333 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (45 of 53 remaining) [2022-04-18 15:56:55,334 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (44 of 53 remaining) [2022-04-18 15:56:55,334 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (43 of 53 remaining) [2022-04-18 15:56:55,334 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (42 of 53 remaining) [2022-04-18 15:56:55,334 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (41 of 53 remaining) [2022-04-18 15:56:55,334 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 53 remaining) [2022-04-18 15:56:55,334 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (39 of 53 remaining) [2022-04-18 15:56:55,334 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (38 of 53 remaining) [2022-04-18 15:56:55,335 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (37 of 53 remaining) [2022-04-18 15:56:55,335 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (36 of 53 remaining) [2022-04-18 15:56:55,335 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (35 of 53 remaining) [2022-04-18 15:56:55,335 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 53 remaining) [2022-04-18 15:56:55,335 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (33 of 53 remaining) [2022-04-18 15:56:55,335 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (32 of 53 remaining) [2022-04-18 15:56:55,335 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (31 of 53 remaining) [2022-04-18 15:56:55,336 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (30 of 53 remaining) [2022-04-18 15:56:55,336 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (29 of 53 remaining) [2022-04-18 15:56:55,336 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (28 of 53 remaining) [2022-04-18 15:56:55,336 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (27 of 53 remaining) [2022-04-18 15:56:55,336 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (26 of 53 remaining) [2022-04-18 15:56:55,336 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (25 of 53 remaining) [2022-04-18 15:56:55,336 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (24 of 53 remaining) [2022-04-18 15:56:55,337 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (23 of 53 remaining) [2022-04-18 15:56:55,337 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (22 of 53 remaining) [2022-04-18 15:56:55,337 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (21 of 53 remaining) [2022-04-18 15:56:55,337 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (20 of 53 remaining) [2022-04-18 15:56:55,337 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (19 of 53 remaining) [2022-04-18 15:56:55,337 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 53 remaining) [2022-04-18 15:56:55,337 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 53 remaining) [2022-04-18 15:56:55,338 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 53 remaining) [2022-04-18 15:56:55,338 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (15 of 53 remaining) [2022-04-18 15:56:55,338 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 53 remaining) [2022-04-18 15:56:55,338 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (13 of 53 remaining) [2022-04-18 15:56:55,338 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 53 remaining) [2022-04-18 15:56:55,338 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (11 of 53 remaining) [2022-04-18 15:56:55,338 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 53 remaining) [2022-04-18 15:56:55,339 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 53 remaining) [2022-04-18 15:56:55,339 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 53 remaining) [2022-04-18 15:56:55,339 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 53 remaining) [2022-04-18 15:56:55,339 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 53 remaining) [2022-04-18 15:56:55,339 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 53 remaining) [2022-04-18 15:56:55,339 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 53 remaining) [2022-04-18 15:56:55,339 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 53 remaining) [2022-04-18 15:56:55,340 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 53 remaining) [2022-04-18 15:56:55,340 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (1 of 53 remaining) [2022-04-18 15:56:55,340 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (0 of 53 remaining) [2022-04-18 15:56:55,340 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 15:56:55,340 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:55,341 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:56:55,341 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:56:55,365 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:56:55,367 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:56:55,367 INFO L340 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 [2022-04-18 15:56:55,367 INFO L341 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2022-04-18 15:56:55,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 393 places, 413 transitions, 868 flow [2022-04-18 15:56:55,391 INFO L129 PetriNetUnfolder]: 21/273 cut-off events. [2022-04-18 15:56:55,391 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 15:56:55,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 273 events. 21/273 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 971 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 287. Up to 8 conditions per place. [2022-04-18 15:56:55,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 393 places, 413 transitions, 868 flow [2022-04-18 15:56:55,396 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 236 transitions, 496 flow [2022-04-18 15:56:55,398 INFO L129 PetriNetUnfolder]: 1/39 cut-off events. [2022-04-18 15:56:55,398 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:56:55,398 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:56:55,398 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:56:55,398 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 66 more)] === [2022-04-18 15:56:55,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:56:55,399 INFO L85 PathProgramCache]: Analyzing trace with hash -939338228, now seen corresponding path program 1 times [2022-04-18 15:56:55,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:56:55,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902394890] [2022-04-18 15:56:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:56:55,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:56:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:56:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:56:55,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:56:55,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902394890] [2022-04-18 15:56:55,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902394890] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:56:55,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:56:55,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:56:55,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665376147] [2022-04-18 15:56:55,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:56:55,418 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:56:55,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:56:55,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:56:55,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:56:55,420 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 413 [2022-04-18 15:56:55,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 236 transitions, 496 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 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) [2022-04-18 15:56:55,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:56:55,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 413 [2022-04-18 15:56:55,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:00,625 INFO L129 PetriNetUnfolder]: 25188/65631 cut-off events. [2022-04-18 15:57:00,626 INFO L130 PetriNetUnfolder]: For 7242/7242 co-relation queries the response was YES. [2022-04-18 15:57:00,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103867 conditions, 65631 events. 25188/65631 cut-off events. For 7242/7242 co-relation queries the response was YES. Maximal size of possible extension queue 1720. Compared 826640 event pairs, 20277 based on Foata normal form. 14241/63634 useless extension candidates. Maximal degree in co-relation 103836. Up to 30610 conditions per place. [2022-04-18 15:57:01,288 INFO L132 encePairwiseOnDemand]: 393/413 looper letters, 56 selfloop transitions, 9 changer transitions 0/243 dead transitions. [2022-04-18 15:57:01,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 243 transitions, 655 flow [2022-04-18 15:57:01,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:01,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:01,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1011 transitions. [2022-04-18 15:57:01,291 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8159806295399515 [2022-04-18 15:57:01,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1011 transitions. [2022-04-18 15:57:01,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1011 transitions. [2022-04-18 15:57:01,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:01,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1011 transitions. [2022-04-18 15:57:01,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 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) [2022-04-18 15:57:01,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-04-18 15:57:01,295 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-04-18 15:57:01,295 INFO L186 Difference]: Start difference. First operand has 228 places, 236 transitions, 496 flow. Second operand 3 states and 1011 transitions. [2022-04-18 15:57:01,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 243 transitions, 655 flow [2022-04-18 15:57:01,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 243 transitions, 646 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-04-18 15:57:01,299 INFO L242 Difference]: Finished difference. Result has 224 places, 228 transitions, 527 flow [2022-04-18 15:57:01,300 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=527, PETRI_PLACES=224, PETRI_TRANSITIONS=228} [2022-04-18 15:57:01,300 INFO L335 CegarLoopForPetriNet]: 228 programPoint places, -4 predicate places. [2022-04-18 15:57:01,300 INFO L478 AbstractCegarLoop]: Abstraction has has 224 places, 228 transitions, 527 flow [2022-04-18 15:57:01,300 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 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) [2022-04-18 15:57:01,301 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:01,301 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:01,301 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-18 15:57:01,301 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 66 more)] === [2022-04-18 15:57:01,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:01,301 INFO L85 PathProgramCache]: Analyzing trace with hash -30423804, now seen corresponding path program 1 times [2022-04-18 15:57:01,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:01,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203844213] [2022-04-18 15:57:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:01,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:01,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:01,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203844213] [2022-04-18 15:57:01,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203844213] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:01,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:01,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:01,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993241257] [2022-04-18 15:57:01,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:01,324 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:01,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:01,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:01,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:01,326 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 413 [2022-04-18 15:57:01,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 228 transitions, 527 flow. Second operand has 3 states, 3 states have (on average 367.3333333333333) internal successors, (1102), 3 states have internal predecessors, (1102), 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) [2022-04-18 15:57:01,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:01,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 413 [2022-04-18 15:57:01,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:03,143 INFO L129 PetriNetUnfolder]: 3770/21676 cut-off events. [2022-04-18 15:57:03,144 INFO L130 PetriNetUnfolder]: For 835/835 co-relation queries the response was YES. [2022-04-18 15:57:03,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27892 conditions, 21676 events. 3770/21676 cut-off events. For 835/835 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 303039 event pairs, 1034 based on Foata normal form. 0/17206 useless extension candidates. Maximal degree in co-relation 27860. Up to 2065 conditions per place. [2022-04-18 15:57:03,337 INFO L132 encePairwiseOnDemand]: 403/413 looper letters, 20 selfloop transitions, 7 changer transitions 0/239 dead transitions. [2022-04-18 15:57:03,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 239 transitions, 613 flow [2022-04-18 15:57:03,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:03,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:03,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1128 transitions. [2022-04-18 15:57:03,340 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.910411622276029 [2022-04-18 15:57:03,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1128 transitions. [2022-04-18 15:57:03,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1128 transitions. [2022-04-18 15:57:03,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:03,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1128 transitions. [2022-04-18 15:57:03,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 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) [2022-04-18 15:57:03,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-04-18 15:57:03,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-04-18 15:57:03,344 INFO L186 Difference]: Start difference. First operand has 224 places, 228 transitions, 527 flow. Second operand 3 states and 1128 transitions. [2022-04-18 15:57:03,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 239 transitions, 613 flow [2022-04-18 15:57:03,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 239 transitions, 595 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:03,351 INFO L242 Difference]: Finished difference. Result has 226 places, 235 transitions, 571 flow [2022-04-18 15:57:03,352 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=571, PETRI_PLACES=226, PETRI_TRANSITIONS=235} [2022-04-18 15:57:03,352 INFO L335 CegarLoopForPetriNet]: 228 programPoint places, -2 predicate places. [2022-04-18 15:57:03,352 INFO L478 AbstractCegarLoop]: Abstraction has has 226 places, 235 transitions, 571 flow [2022-04-18 15:57:03,353 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 367.3333333333333) internal successors, (1102), 3 states have internal predecessors, (1102), 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) [2022-04-18 15:57:03,353 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:03,353 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:03,353 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-18 15:57:03,353 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 66 more)] === [2022-04-18 15:57:03,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:03,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1970162391, now seen corresponding path program 1 times [2022-04-18 15:57:03,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:03,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021186262] [2022-04-18 15:57:03,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:03,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:03,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:03,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021186262] [2022-04-18 15:57:03,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021186262] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:03,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:03,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:03,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345320358] [2022-04-18 15:57:03,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:03,368 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:03,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:03,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:03,369 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 413 [2022-04-18 15:57:03,370 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 235 transitions, 571 flow. Second operand has 3 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 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) [2022-04-18 15:57:03,370 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:03,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 413 [2022-04-18 15:57:03,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand