./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/09_fmaxsym.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/09_fmaxsym.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 0bf02669c3dd381b0745ab8dce392518dfe698af15c4a94bd383f1dab20a8c06 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-28 17:53:42,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-28 17:53:42,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-28 17:53:42,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-28 17:53:42,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-28 17:53:42,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-28 17:53:42,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-28 17:53:42,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-28 17:53:42,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-28 17:53:42,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-28 17:53:42,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-28 17:53:42,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-28 17:53:42,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-28 17:53:42,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-28 17:53:42,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-28 17:53:42,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-28 17:53:42,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-28 17:53:42,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-28 17:53:42,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-28 17:53:42,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-28 17:53:42,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-28 17:53:42,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-28 17:53:42,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-28 17:53:42,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-28 17:53:42,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-28 17:53:42,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-28 17:53:42,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-28 17:53:42,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-28 17:53:42,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-28 17:53:42,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-28 17:53:42,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-28 17:53:42,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-28 17:53:42,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-28 17:53:42,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-28 17:53:42,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-28 17:53:42,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-28 17:53:42,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-28 17:53:42,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-28 17:53:42,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-28 17:53:42,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-28 17:53:42,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-28 17:53:42,906 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-28 17:53:42,948 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-28 17:53:42,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-28 17:53:42,949 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-28 17:53:42,949 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-28 17:53:42,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-28 17:53:42,950 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-28 17:53:42,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-28 17:53:42,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-28 17:53:42,951 INFO L138 SettingsManager]: * Use SBE=true [2023-08-28 17:53:42,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-28 17:53:42,952 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-28 17:53:42,953 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-28 17:53:42,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-28 17:53:42,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-28 17:53:42,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-28 17:53:42,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-28 17:53:42,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-28 17:53:42,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-28 17:53:42,954 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-28 17:53:42,954 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-28 17:53:42,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-28 17:53:42,954 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-28 17:53:42,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-28 17:53:42,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-28 17:53:42,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-28 17:53:42,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-28 17:53:42,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 17:53:42,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-28 17:53:42,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-28 17:53:42,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-28 17:53:42,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-28 17:53:42,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-28 17:53:42,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-28 17:53:42,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-28 17:53:42,957 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-28 17:53:42,957 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-28 17:53:42,957 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-28 17:53:42,957 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf02669c3dd381b0745ab8dce392518dfe698af15c4a94bd383f1dab20a8c06 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-28 17:53:43,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-28 17:53:43,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-28 17:53:43,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-28 17:53:43,293 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-28 17:53:43,293 INFO L275 PluginConnector]: CDTParser initialized [2023-08-28 17:53:43,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/09_fmaxsym.i [2023-08-28 17:53:44,443 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-28 17:53:44,776 INFO L351 CDTParser]: Found 1 translation units. [2023-08-28 17:53:44,777 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/09_fmaxsym.i [2023-08-28 17:53:44,791 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/805e24ba8/6ef89129a3d04bdbba4ec1460510e42f/FLAG1366b98d5 [2023-08-28 17:53:44,807 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/805e24ba8/6ef89129a3d04bdbba4ec1460510e42f [2023-08-28 17:53:44,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-28 17:53:44,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-28 17:53:44,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-28 17:53:44,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-28 17:53:44,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-28 17:53:44,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 05:53:44" (1/1) ... [2023-08-28 17:53:44,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11b5944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:44, skipping insertion in model container [2023-08-28 17:53:44,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 05:53:44" (1/1) ... [2023-08-28 17:53:44,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-28 17:53:44,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-28 17:53:45,165 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/09_fmaxsym.i[30422,30435] [2023-08-28 17:53:45,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 17:53:45,186 INFO L203 MainTranslator]: Completed pre-run [2023-08-28 17:53:45,238 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/09_fmaxsym.i[30422,30435] [2023-08-28 17:53:45,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 17:53:45,298 INFO L208 MainTranslator]: Completed translation [2023-08-28 17:53:45,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:45 WrapperNode [2023-08-28 17:53:45,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-28 17:53:45,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-28 17:53:45,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-28 17:53:45,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-28 17:53:45,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:45" (1/1) ... [2023-08-28 17:53:45,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:45" (1/1) ... [2023-08-28 17:53:45,336 INFO L138 Inliner]: procedures = 171, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 103 [2023-08-28 17:53:45,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-28 17:53:45,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-28 17:53:45,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-28 17:53:45,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-28 17:53:45,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:45" (1/1) ... [2023-08-28 17:53:45,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:45" (1/1) ... [2023-08-28 17:53:45,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:45" (1/1) ... [2023-08-28 17:53:45,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:45" (1/1) ... [2023-08-28 17:53:45,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:45" (1/1) ... [2023-08-28 17:53:45,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:45" (1/1) ... [2023-08-28 17:53:45,360 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:45" (1/1) ... [2023-08-28 17:53:45,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:45" (1/1) ... [2023-08-28 17:53:45,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-28 17:53:45,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-28 17:53:45,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-28 17:53:45,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-28 17:53:45,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:45" (1/1) ... [2023-08-28 17:53:45,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 17:53:45,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:53:45,402 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-28 17:53:45,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-28 17:53:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-28 17:53:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-28 17:53:45,439 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-28 17:53:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-28 17:53:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-28 17:53:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-28 17:53:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-28 17:53:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-28 17:53:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-28 17:53:45,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-28 17:53:45,441 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-28 17:53:45,538 INFO L236 CfgBuilder]: Building ICFG [2023-08-28 17:53:45,540 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-28 17:53:45,731 INFO L277 CfgBuilder]: Performing block encoding [2023-08-28 17:53:45,820 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-28 17:53:45,820 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-28 17:53:45,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 05:53:45 BoogieIcfgContainer [2023-08-28 17:53:45,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-28 17:53:45,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-28 17:53:45,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-28 17:53:45,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-28 17:53:45,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 05:53:44" (1/3) ... [2023-08-28 17:53:45,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778de889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 05:53:45, skipping insertion in model container [2023-08-28 17:53:45,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:45" (2/3) ... [2023-08-28 17:53:45,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778de889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 05:53:45, skipping insertion in model container [2023-08-28 17:53:45,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 05:53:45" (3/3) ... [2023-08-28 17:53:45,845 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i [2023-08-28 17:53:45,852 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-28 17:53:45,860 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-28 17:53:45,860 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-28 17:53:45,860 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-28 17:53:45,968 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 17:53:45,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 92 transitions, 189 flow [2023-08-28 17:53:46,046 INFO L130 PetriNetUnfolder]: 7/102 cut-off events. [2023-08-28 17:53:46,047 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:46,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 102 events. 7/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2023-08-28 17:53:46,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 92 transitions, 189 flow [2023-08-28 17:53:46,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 92 transitions, 189 flow [2023-08-28 17:53:46,058 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:53:46,065 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 92 transitions, 189 flow [2023-08-28 17:53:46,068 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 92 transitions, 189 flow [2023-08-28 17:53:46,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 92 transitions, 189 flow [2023-08-28 17:53:46,093 INFO L130 PetriNetUnfolder]: 7/102 cut-off events. [2023-08-28 17:53:46,093 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:46,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 102 events. 7/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2023-08-28 17:53:46,095 INFO L119 LiptonReduction]: Number of co-enabled transitions 1508 [2023-08-28 17:53:49,276 INFO L134 LiptonReduction]: Checked pairs total: 1638 [2023-08-28 17:53:49,276 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-08-28 17:53:49,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 17:53:49,294 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@31b78466, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:53:49,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-28 17:53:49,297 INFO L130 PetriNetUnfolder]: 1/10 cut-off events. [2023-08-28 17:53:49,298 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:49,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:49,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-28 17:53:49,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-28 17:53:49,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:49,303 INFO L85 PathProgramCache]: Analyzing trace with hash 450635520, now seen corresponding path program 1 times [2023-08-28 17:53:49,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:49,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750918397] [2023-08-28 17:53:49,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:49,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:53:49,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:49,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750918397] [2023-08-28 17:53:49,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750918397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:49,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:49,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 17:53:49,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130135999] [2023-08-28 17:53:49,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:49,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 17:53:49,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:49,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 17:53:49,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 17:53:49,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 195 [2023-08-28 17:53:49,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 39 flow. Second operand has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:49,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:49,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 195 [2023-08-28 17:53:49,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:49,519 INFO L130 PetriNetUnfolder]: 7/19 cut-off events. [2023-08-28 17:53:49,520 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:49,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 19 events. 7/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 4 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 30. Up to 19 conditions per place. [2023-08-28 17:53:49,521 INFO L137 encePairwiseOnDemand]: 186/195 looper letters, 0 selfloop transitions, 0 changer transitions 8/8 dead transitions. [2023-08-28 17:53:49,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 8 transitions, 35 flow [2023-08-28 17:53:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 17:53:49,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 17:53:49,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 174 transitions. [2023-08-28 17:53:49,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2023-08-28 17:53:49,538 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 174 transitions. [2023-08-28 17:53:49,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 174 transitions. [2023-08-28 17:53:49,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:49,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 174 transitions. [2023-08-28 17:53:49,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 87.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:49,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:49,553 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:49,554 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 39 flow. Second operand 2 states and 174 transitions. [2023-08-28 17:53:49,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 8 transitions, 35 flow [2023-08-28 17:53:49,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 8 transitions, 35 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 17:53:49,558 INFO L231 Difference]: Finished difference. Result has 11 places, 0 transitions, 0 flow [2023-08-28 17:53:49,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=11, PETRI_TRANSITIONS=0} [2023-08-28 17:53:49,562 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -8 predicate places. [2023-08-28 17:53:49,562 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 0 transitions, 0 flow [2023-08-28 17:53:49,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:49,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 16 remaining) [2023-08-28 17:53:49,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-08-28 17:53:49,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-08-28 17:53:49,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2023-08-28 17:53:49,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-08-28 17:53:49,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-08-28 17:53:49,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-08-28 17:53:49,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-08-28 17:53:49,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-08-28 17:53:49,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-08-28 17:53:49,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-08-28 17:53:49,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-08-28 17:53:49,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-08-28 17:53:49,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-08-28 17:53:49,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-08-28 17:53:49,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-08-28 17:53:49,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-28 17:53:49,577 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 17:53:49,582 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 17:53:49,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 92 transitions, 189 flow [2023-08-28 17:53:49,605 INFO L130 PetriNetUnfolder]: 7/102 cut-off events. [2023-08-28 17:53:49,606 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:49,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 102 events. 7/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2023-08-28 17:53:49,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 92 transitions, 189 flow [2023-08-28 17:53:49,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 92 transitions, 189 flow [2023-08-28 17:53:49,608 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:53:49,608 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 92 transitions, 189 flow [2023-08-28 17:53:49,608 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 92 transitions, 189 flow [2023-08-28 17:53:49,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 92 transitions, 189 flow [2023-08-28 17:53:49,620 INFO L130 PetriNetUnfolder]: 7/102 cut-off events. [2023-08-28 17:53:49,620 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:49,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 102 events. 7/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2023-08-28 17:53:49,622 INFO L119 LiptonReduction]: Number of co-enabled transitions 1508 [2023-08-28 17:53:52,914 INFO L134 LiptonReduction]: Checked pairs total: 1787 [2023-08-28 17:53:52,914 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-08-28 17:53:52,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 17:53:52,918 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@31b78466, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:53:52,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 17:53:52,921 INFO L130 PetriNetUnfolder]: 1/18 cut-off events. [2023-08-28 17:53:52,921 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:52,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:52,922 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-28 17:53:52,922 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 17:53:52,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:52,922 INFO L85 PathProgramCache]: Analyzing trace with hash -50769458, now seen corresponding path program 1 times [2023-08-28 17:53:52,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:52,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228870785] [2023-08-28 17:53:52,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:52,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:53:52,948 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 17:53:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:53:52,976 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 17:53:52,977 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 17:53:52,977 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 17:53:52,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-28 17:53:52,977 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 17:53:52,978 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 17:53:52,979 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 17:53:52,979 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-28 17:53:53,001 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 17:53:53,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 151 transitions, 314 flow [2023-08-28 17:53:53,031 INFO L130 PetriNetUnfolder]: 13/173 cut-off events. [2023-08-28 17:53:53,031 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 17:53:53,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 173 events. 13/173 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 328 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 128. Up to 6 conditions per place. [2023-08-28 17:53:53,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 151 transitions, 314 flow [2023-08-28 17:53:53,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 151 transitions, 314 flow [2023-08-28 17:53:53,039 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:53:53,039 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 151 transitions, 314 flow [2023-08-28 17:53:53,039 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 151 transitions, 314 flow [2023-08-28 17:53:53,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 151 transitions, 314 flow [2023-08-28 17:53:53,062 INFO L130 PetriNetUnfolder]: 13/173 cut-off events. [2023-08-28 17:53:53,062 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 17:53:53,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 173 events. 13/173 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 328 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 128. Up to 6 conditions per place. [2023-08-28 17:53:53,068 INFO L119 LiptonReduction]: Number of co-enabled transitions 9860 [2023-08-28 17:53:54,954 INFO L134 LiptonReduction]: Checked pairs total: 33882 [2023-08-28 17:53:54,954 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-08-28 17:53:54,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 17:53:54,957 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@31b78466, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:53:54,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-28 17:53:54,962 INFO L130 PetriNetUnfolder]: 0/21 cut-off events. [2023-08-28 17:53:54,968 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-28 17:53:54,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:54,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:53:54,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:53:54,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:54,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1496436764, now seen corresponding path program 1 times [2023-08-28 17:53:54,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:54,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37772861] [2023-08-28 17:53:54,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:54,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:55,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:53:55,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:55,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37772861] [2023-08-28 17:53:55,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37772861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:55,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:55,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 17:53:55,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608831536] [2023-08-28 17:53:55,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:55,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 17:53:55,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:55,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 17:53:55,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 17:53:55,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 262 [2023-08-28 17:53:55,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 144 flow. Second operand has 2 states, 2 states have (on average 130.0) internal successors, (260), 2 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:55,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:55,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 262 [2023-08-28 17:53:55,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:55,165 INFO L130 PetriNetUnfolder]: 257/768 cut-off events. [2023-08-28 17:53:55,165 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-08-28 17:53:55,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1219 conditions, 768 events. 257/768 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4804 event pairs, 183 based on Foata normal form. 66/686 useless extension candidates. Maximal degree in co-relation 604. Up to 412 conditions per place. [2023-08-28 17:53:55,170 INFO L137 encePairwiseOnDemand]: 251/262 looper letters, 22 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2023-08-28 17:53:55,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 166 flow [2023-08-28 17:53:55,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 17:53:55,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 17:53:55,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 287 transitions. [2023-08-28 17:53:55,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5477099236641222 [2023-08-28 17:53:55,173 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 287 transitions. [2023-08-28 17:53:55,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 287 transitions. [2023-08-28 17:53:55,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:55,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 287 transitions. [2023-08-28 17:53:55,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:55,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:55,177 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:55,177 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 144 flow. Second operand 2 states and 287 transitions. [2023-08-28 17:53:55,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 166 flow [2023-08-28 17:53:55,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 164 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-28 17:53:55,180 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 120 flow [2023-08-28 17:53:55,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-08-28 17:53:55,181 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -8 predicate places. [2023-08-28 17:53:55,181 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 120 flow [2023-08-28 17:53:55,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 130.0) internal successors, (260), 2 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:55,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:55,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:53:55,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-28 17:53:55,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:53:55,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:55,182 INFO L85 PathProgramCache]: Analyzing trace with hash 855097618, now seen corresponding path program 1 times [2023-08-28 17:53:55,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:55,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162619646] [2023-08-28 17:53:55,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:55,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:53:55,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:55,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162619646] [2023-08-28 17:53:55,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162619646] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:55,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:55,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-28 17:53:55,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504242251] [2023-08-28 17:53:55,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:55,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-28 17:53:55,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:55,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-28 17:53:55,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-28 17:53:55,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 262 [2023-08-28 17:53:55,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 120 flow. Second operand has 6 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:55,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:55,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 262 [2023-08-28 17:53:55,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:55,947 INFO L130 PetriNetUnfolder]: 381/949 cut-off events. [2023-08-28 17:53:55,947 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-08-28 17:53:55,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1611 conditions, 949 events. 381/949 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5905 event pairs, 79 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 1606. Up to 275 conditions per place. [2023-08-28 17:53:55,953 INFO L137 encePairwiseOnDemand]: 256/262 looper letters, 65 selfloop transitions, 5 changer transitions 0/98 dead transitions. [2023-08-28 17:53:55,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 98 transitions, 366 flow [2023-08-28 17:53:55,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-28 17:53:55,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-28 17:53:55,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 767 transitions. [2023-08-28 17:53:55,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48791348600508905 [2023-08-28 17:53:55,957 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 767 transitions. [2023-08-28 17:53:55,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 767 transitions. [2023-08-28 17:53:55,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:55,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 767 transitions. [2023-08-28 17:53:55,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:55,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:55,965 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:55,965 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 120 flow. Second operand 6 states and 767 transitions. [2023-08-28 17:53:55,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 98 transitions, 366 flow [2023-08-28 17:53:55,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 98 transitions, 366 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 17:53:55,967 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 128 flow [2023-08-28 17:53:55,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=128, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-08-28 17:53:55,968 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2023-08-28 17:53:55,969 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 128 flow [2023-08-28 17:53:55,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:55,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:55,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:53:55,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-28 17:53:55,970 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:53:55,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:55,971 INFO L85 PathProgramCache]: Analyzing trace with hash 764636256, now seen corresponding path program 1 times [2023-08-28 17:53:55,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:55,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801649196] [2023-08-28 17:53:55,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:55,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:53:56,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:56,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801649196] [2023-08-28 17:53:56,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801649196] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:56,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:56,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:53:56,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767050223] [2023-08-28 17:53:56,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:56,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:53:56,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:56,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:53:56,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:53:56,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 262 [2023-08-28 17:53:56,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:56,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:56,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 262 [2023-08-28 17:53:56,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:56,211 INFO L130 PetriNetUnfolder]: 989/2032 cut-off events. [2023-08-28 17:53:56,212 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2023-08-28 17:53:56,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3897 conditions, 2032 events. 989/2032 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 12495 event pairs, 315 based on Foata normal form. 0/1840 useless extension candidates. Maximal degree in co-relation 3891. Up to 1082 conditions per place. [2023-08-28 17:53:56,224 INFO L137 encePairwiseOnDemand]: 248/262 looper letters, 54 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2023-08-28 17:53:56,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 321 flow [2023-08-28 17:53:56,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:53:56,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:53:56,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2023-08-28 17:53:56,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178117048346056 [2023-08-28 17:53:56,227 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2023-08-28 17:53:56,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2023-08-28 17:53:56,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:56,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2023-08-28 17:53:56,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:56,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:56,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:56,231 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 128 flow. Second operand 3 states and 407 transitions. [2023-08-28 17:53:56,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 321 flow [2023-08-28 17:53:56,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 309 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-28 17:53:56,240 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 206 flow [2023-08-28 17:53:56,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2023-08-28 17:53:56,242 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -5 predicate places. [2023-08-28 17:53:56,242 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 206 flow [2023-08-28 17:53:56,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:56,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:56,243 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:53:56,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-28 17:53:56,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:53:56,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:56,244 INFO L85 PathProgramCache]: Analyzing trace with hash 267434279, now seen corresponding path program 1 times [2023-08-28 17:53:56,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:56,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990379377] [2023-08-28 17:53:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:56,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 17:53:56,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:56,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990379377] [2023-08-28 17:53:56,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990379377] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:56,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:56,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-28 17:53:56,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154731485] [2023-08-28 17:53:56,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:56,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-28 17:53:56,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:56,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-28 17:53:56,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-28 17:53:56,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 262 [2023-08-28 17:53:56,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:56,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:56,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 262 [2023-08-28 17:53:56,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:56,883 INFO L130 PetriNetUnfolder]: 896/1935 cut-off events. [2023-08-28 17:53:56,883 INFO L131 PetriNetUnfolder]: For 293/301 co-relation queries the response was YES. [2023-08-28 17:53:56,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3902 conditions, 1935 events. 896/1935 cut-off events. For 293/301 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 12281 event pairs, 221 based on Foata normal form. 4/1751 useless extension candidates. Maximal degree in co-relation 3895. Up to 669 conditions per place. [2023-08-28 17:53:56,894 INFO L137 encePairwiseOnDemand]: 256/262 looper letters, 62 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2023-08-28 17:53:56,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 103 transitions, 434 flow [2023-08-28 17:53:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-28 17:53:56,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-28 17:53:56,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 763 transitions. [2023-08-28 17:53:56,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48536895674300257 [2023-08-28 17:53:56,898 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 763 transitions. [2023-08-28 17:53:56,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 763 transitions. [2023-08-28 17:53:56,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:56,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 763 transitions. [2023-08-28 17:53:56,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:56,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:56,904 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:56,904 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 206 flow. Second operand 6 states and 763 transitions. [2023-08-28 17:53:56,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 103 transitions, 434 flow [2023-08-28 17:53:56,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 103 transitions, 406 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 17:53:56,909 INFO L231 Difference]: Finished difference. Result has 62 places, 63 transitions, 194 flow [2023-08-28 17:53:56,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=62, PETRI_TRANSITIONS=63} [2023-08-28 17:53:56,911 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2023-08-28 17:53:56,911 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 63 transitions, 194 flow [2023-08-28 17:53:56,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:56,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:56,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:53:56,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-28 17:53:56,913 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:53:56,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:56,913 INFO L85 PathProgramCache]: Analyzing trace with hash 615665876, now seen corresponding path program 1 times [2023-08-28 17:53:56,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:56,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237744224] [2023-08-28 17:53:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:56,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:56,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:53:56,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:56,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237744224] [2023-08-28 17:53:56,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237744224] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:56,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:56,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:53:56,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216254156] [2023-08-28 17:53:56,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:56,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:53:56,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:56,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:53:56,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:53:56,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 262 [2023-08-28 17:53:56,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 63 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:56,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:56,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 262 [2023-08-28 17:53:56,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:57,147 INFO L130 PetriNetUnfolder]: 908/1945 cut-off events. [2023-08-28 17:53:57,148 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2023-08-28 17:53:57,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4070 conditions, 1945 events. 908/1945 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 12112 event pairs, 579 based on Foata normal form. 0/1725 useless extension candidates. Maximal degree in co-relation 4063. Up to 1394 conditions per place. [2023-08-28 17:53:57,159 INFO L137 encePairwiseOnDemand]: 256/262 looper letters, 42 selfloop transitions, 9 changer transitions 1/81 dead transitions. [2023-08-28 17:53:57,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 81 transitions, 353 flow [2023-08-28 17:53:57,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:53:57,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:53:57,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-08-28 17:53:57,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49872773536895676 [2023-08-28 17:53:57,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-08-28 17:53:57,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-08-28 17:53:57,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:57,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-08-28 17:53:57,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:57,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:57,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:57,165 INFO L175 Difference]: Start difference. First operand has 62 places, 63 transitions, 194 flow. Second operand 3 states and 392 transitions. [2023-08-28 17:53:57,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 81 transitions, 353 flow [2023-08-28 17:53:57,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 81 transitions, 341 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-28 17:53:57,167 INFO L231 Difference]: Finished difference. Result has 60 places, 70 transitions, 253 flow [2023-08-28 17:53:57,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=60, PETRI_TRANSITIONS=70} [2023-08-28 17:53:57,168 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -5 predicate places. [2023-08-28 17:53:57,168 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 70 transitions, 253 flow [2023-08-28 17:53:57,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:57,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:57,169 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:53:57,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-28 17:53:57,169 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:53:57,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:57,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1697985648, now seen corresponding path program 1 times [2023-08-28 17:53:57,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:57,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914609804] [2023-08-28 17:53:57,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:57,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 17:53:57,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:57,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914609804] [2023-08-28 17:53:57,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914609804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:57,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:57,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:53:57,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640387170] [2023-08-28 17:53:57,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:57,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:53:57,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:57,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:53:57,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:53:57,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 262 [2023-08-28 17:53:57,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 70 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:57,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:57,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 262 [2023-08-28 17:53:57,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:57,395 INFO L130 PetriNetUnfolder]: 955/2006 cut-off events. [2023-08-28 17:53:57,396 INFO L131 PetriNetUnfolder]: For 571/587 co-relation queries the response was YES. [2023-08-28 17:53:57,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4441 conditions, 2006 events. 955/2006 cut-off events. For 571/587 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 12353 event pairs, 590 based on Foata normal form. 0/1768 useless extension candidates. Maximal degree in co-relation 4433. Up to 1465 conditions per place. [2023-08-28 17:53:57,408 INFO L137 encePairwiseOnDemand]: 256/262 looper letters, 45 selfloop transitions, 11 changer transitions 1/86 dead transitions. [2023-08-28 17:53:57,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 419 flow [2023-08-28 17:53:57,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:53:57,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:53:57,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-08-28 17:53:57,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4961832061068702 [2023-08-28 17:53:57,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-08-28 17:53:57,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-08-28 17:53:57,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:57,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-08-28 17:53:57,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:57,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:57,413 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:57,413 INFO L175 Difference]: Start difference. First operand has 60 places, 70 transitions, 253 flow. Second operand 3 states and 390 transitions. [2023-08-28 17:53:57,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 419 flow [2023-08-28 17:53:57,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-28 17:53:57,417 INFO L231 Difference]: Finished difference. Result has 62 places, 77 transitions, 323 flow [2023-08-28 17:53:57,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=323, PETRI_PLACES=62, PETRI_TRANSITIONS=77} [2023-08-28 17:53:57,417 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2023-08-28 17:53:57,418 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 77 transitions, 323 flow [2023-08-28 17:53:57,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:57,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:57,418 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:53:57,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-28 17:53:57,419 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:53:57,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:57,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1258201689, now seen corresponding path program 1 times [2023-08-28 17:53:57,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:57,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992099505] [2023-08-28 17:53:57,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:57,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 17:53:57,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:57,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992099505] [2023-08-28 17:53:57,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992099505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:57,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:57,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-28 17:53:57,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550600567] [2023-08-28 17:53:57,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:57,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:53:57,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:57,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:53:57,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:53:57,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 262 [2023-08-28 17:53:57,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 77 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:57,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:57,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 262 [2023-08-28 17:53:57,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:57,629 INFO L130 PetriNetUnfolder]: 543/1324 cut-off events. [2023-08-28 17:53:57,629 INFO L131 PetriNetUnfolder]: For 457/477 co-relation queries the response was YES. [2023-08-28 17:53:57,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2808 conditions, 1324 events. 543/1324 cut-off events. For 457/477 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 7985 event pairs, 225 based on Foata normal form. 24/1205 useless extension candidates. Maximal degree in co-relation 2799. Up to 436 conditions per place. [2023-08-28 17:53:57,637 INFO L137 encePairwiseOnDemand]: 258/262 looper letters, 32 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2023-08-28 17:53:57,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 73 transitions, 316 flow [2023-08-28 17:53:57,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:53:57,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:53:57,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2023-08-28 17:53:57,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267175572519084 [2023-08-28 17:53:57,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 414 transitions. [2023-08-28 17:53:57,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 414 transitions. [2023-08-28 17:53:57,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:57,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 414 transitions. [2023-08-28 17:53:57,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:57,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:57,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:57,642 INFO L175 Difference]: Start difference. First operand has 62 places, 77 transitions, 323 flow. Second operand 3 states and 414 transitions. [2023-08-28 17:53:57,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 73 transitions, 316 flow [2023-08-28 17:53:57,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 73 transitions, 301 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-28 17:53:57,647 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 208 flow [2023-08-28 17:53:57,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-08-28 17:53:57,647 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2023-08-28 17:53:57,648 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 208 flow [2023-08-28 17:53:57,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:57,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:57,648 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:53:57,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-28 17:53:57,649 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:53:57,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:57,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1566246953, now seen corresponding path program 1 times [2023-08-28 17:53:57,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:57,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785238163] [2023-08-28 17:53:57,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:57,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:53:58,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:58,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785238163] [2023-08-28 17:53:58,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785238163] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:53:58,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941938444] [2023-08-28 17:53:58,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:58,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:53:58,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:53:58,398 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:53:58,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-28 17:53:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:58,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-28 17:53:58,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:53:58,676 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:53:58,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:53:58,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:53:58,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:53:58,991 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2023-08-28 17:53:58,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 16 [2023-08-28 17:53:59,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:53:59,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:53:59,213 WARN L839 $PredicateComparison]: unable to prove that (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_31_49| Int) (v_ArrVal_152 (Array Int Int))) (or (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_31_49|) (< c_~max~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_152) |c_~#storage~0.base|) (+ (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_31_49| 8) |c_~#storage~0.offset|))) (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_31_49| 0))) is different from false [2023-08-28 17:53:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-28 17:53:59,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941938444] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:53:59,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:53:59,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-28 17:53:59,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368725494] [2023-08-28 17:53:59,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:53:59,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-28 17:53:59,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:59,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-28 17:53:59,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=192, Unknown=1, NotChecked=28, Total=272 [2023-08-28 17:53:59,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 262 [2023-08-28 17:53:59,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 208 flow. Second operand has 17 states, 17 states have (on average 80.94117647058823) internal successors, (1376), 17 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:59,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:59,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 262 [2023-08-28 17:53:59,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:00,331 INFO L130 PetriNetUnfolder]: 1631/3012 cut-off events. [2023-08-28 17:54:00,331 INFO L131 PetriNetUnfolder]: For 402/450 co-relation queries the response was YES. [2023-08-28 17:54:00,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6667 conditions, 3012 events. 1631/3012 cut-off events. For 402/450 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 19083 event pairs, 127 based on Foata normal form. 4/2784 useless extension candidates. Maximal degree in co-relation 6658. Up to 1550 conditions per place. [2023-08-28 17:54:00,350 INFO L137 encePairwiseOnDemand]: 252/262 looper letters, 116 selfloop transitions, 12 changer transitions 5/157 dead transitions. [2023-08-28 17:54:00,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 157 transitions, 714 flow [2023-08-28 17:54:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-28 17:54:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-28 17:54:00,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 749 transitions. [2023-08-28 17:54:00,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3573473282442748 [2023-08-28 17:54:00,353 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 749 transitions. [2023-08-28 17:54:00,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 749 transitions. [2023-08-28 17:54:00,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:00,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 749 transitions. [2023-08-28 17:54:00,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.625) internal successors, (749), 8 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:00,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:00,359 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:00,359 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 208 flow. Second operand 8 states and 749 transitions. [2023-08-28 17:54:00,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 157 transitions, 714 flow [2023-08-28 17:54:00,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 157 transitions, 701 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:00,365 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 287 flow [2023-08-28 17:54:00,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=287, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2023-08-28 17:54:00,365 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2023-08-28 17:54:00,366 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 287 flow [2023-08-28 17:54:00,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 80.94117647058823) internal successors, (1376), 17 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:00,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:00,366 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:00,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-28 17:54:00,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-28 17:54:00,573 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:00,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:00,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1152405702, now seen corresponding path program 1 times [2023-08-28 17:54:00,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:00,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130663940] [2023-08-28 17:54:00,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:00,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:01,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:01,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:01,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130663940] [2023-08-28 17:54:01,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130663940] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:54:01,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552478226] [2023-08-28 17:54:01,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:01,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:54:01,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:54:01,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:54:01,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-28 17:54:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:01,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-28 17:54:01,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:54:01,471 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:54:01,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:54:01,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:54:01,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:54:01,719 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2023-08-28 17:54:01,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 16 [2023-08-28 17:54:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:01,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:54:01,874 WARN L839 $PredicateComparison]: unable to prove that (forall ((|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_37_49| Int) (v_ArrVal_198 (Array Int Int))) (or (< c_~max~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_198) |c_~#storage~0.base|) (+ (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_37_49| 8) |c_~#storage~0.offset|))) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_37_49|) (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_37_49| 0))) is different from false [2023-08-28 17:54:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-28 17:54:01,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552478226] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:54:01,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:54:01,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-28 17:54:01,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998959908] [2023-08-28 17:54:01,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:54:01,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-28 17:54:01,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:01,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-28 17:54:01,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=191, Unknown=1, NotChecked=28, Total=272 [2023-08-28 17:54:01,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 262 [2023-08-28 17:54:01,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 287 flow. Second operand has 17 states, 17 states have (on average 81.17647058823529) internal successors, (1380), 17 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:01,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:01,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 262 [2023-08-28 17:54:01,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:02,638 INFO L130 PetriNetUnfolder]: 1325/2495 cut-off events. [2023-08-28 17:54:02,639 INFO L131 PetriNetUnfolder]: For 854/900 co-relation queries the response was YES. [2023-08-28 17:54:02,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6071 conditions, 2495 events. 1325/2495 cut-off events. For 854/900 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 14531 event pairs, 113 based on Foata normal form. 2/2325 useless extension candidates. Maximal degree in co-relation 6056. Up to 1550 conditions per place. [2023-08-28 17:54:02,656 INFO L137 encePairwiseOnDemand]: 254/262 looper letters, 91 selfloop transitions, 14 changer transitions 1/130 dead transitions. [2023-08-28 17:54:02,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 130 transitions, 700 flow [2023-08-28 17:54:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-28 17:54:02,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-28 17:54:02,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 648 transitions. [2023-08-28 17:54:02,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3533260632497274 [2023-08-28 17:54:02,659 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 648 transitions. [2023-08-28 17:54:02,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 648 transitions. [2023-08-28 17:54:02,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:02,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 648 transitions. [2023-08-28 17:54:02,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:02,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 262.0) internal successors, (2096), 8 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:02,664 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 262.0) internal successors, (2096), 8 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:02,664 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 287 flow. Second operand 7 states and 648 transitions. [2023-08-28 17:54:02,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 130 transitions, 700 flow [2023-08-28 17:54:02,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 130 transitions, 700 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 17:54:02,670 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 377 flow [2023-08-28 17:54:02,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=377, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2023-08-28 17:54:02,672 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 19 predicate places. [2023-08-28 17:54:02,672 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 377 flow [2023-08-28 17:54:02,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 81.17647058823529) internal successors, (1380), 17 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:02,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:02,673 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:02,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-28 17:54:02,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-28 17:54:02,879 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:02,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:02,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1538269688, now seen corresponding path program 1 times [2023-08-28 17:54:02,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:02,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394743616] [2023-08-28 17:54:02,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:02,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:04,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:04,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394743616] [2023-08-28 17:54:04,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394743616] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:54:04,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115464426] [2023-08-28 17:54:04,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:04,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:54:04,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:54:04,037 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:54:04,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-28 17:54:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:04,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-28 17:54:04,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:54:04,267 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:54:04,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:54:04,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:54:04,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:54:04,896 INFO L321 Elim1Store]: treesize reduction 50, result has 12.3 percent of original size [2023-08-28 17:54:04,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 40 treesize of output 22 [2023-08-28 17:54:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:04,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:54:05,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:05,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115464426] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:54:05,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:54:05,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-28 17:54:05,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522395497] [2023-08-28 17:54:05,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:54:05,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-28 17:54:05,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:05,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-28 17:54:05,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=699, Unknown=9, NotChecked=0, Total=812 [2023-08-28 17:54:06,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 262 [2023-08-28 17:54:06,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 377 flow. Second operand has 29 states, 29 states have (on average 69.82758620689656) internal successors, (2025), 29 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:06,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:06,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 262 [2023-08-28 17:54:06,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:12,400 INFO L130 PetriNetUnfolder]: 6677/12351 cut-off events. [2023-08-28 17:54:12,400 INFO L131 PetriNetUnfolder]: For 3954/4128 co-relation queries the response was YES. [2023-08-28 17:54:12,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30395 conditions, 12351 events. 6677/12351 cut-off events. For 3954/4128 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 92872 event pairs, 957 based on Foata normal form. 66/11883 useless extension candidates. Maximal degree in co-relation 30375. Up to 2260 conditions per place. [2023-08-28 17:54:12,503 INFO L137 encePairwiseOnDemand]: 246/262 looper letters, 482 selfloop transitions, 101 changer transitions 12/619 dead transitions. [2023-08-28 17:54:12,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 619 transitions, 3306 flow [2023-08-28 17:54:12,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-28 17:54:12,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-28 17:54:12,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3177 transitions. [2023-08-28 17:54:12,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31092190252495594 [2023-08-28 17:54:12,515 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3177 transitions. [2023-08-28 17:54:12,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3177 transitions. [2023-08-28 17:54:12,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:12,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3177 transitions. [2023-08-28 17:54:12,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 81.46153846153847) internal successors, (3177), 39 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:12,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 262.0) internal successors, (10480), 40 states have internal predecessors, (10480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:12,539 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 262.0) internal successors, (10480), 40 states have internal predecessors, (10480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:12,539 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 377 flow. Second operand 39 states and 3177 transitions. [2023-08-28 17:54:12,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 619 transitions, 3306 flow [2023-08-28 17:54:12,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 619 transitions, 3284 flow, removed 11 selfloop flow, removed 0 redundant places. [2023-08-28 17:54:12,604 INFO L231 Difference]: Finished difference. Result has 143 places, 179 transitions, 1222 flow [2023-08-28 17:54:12,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1222, PETRI_PLACES=143, PETRI_TRANSITIONS=179} [2023-08-28 17:54:12,605 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 78 predicate places. [2023-08-28 17:54:12,605 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 179 transitions, 1222 flow [2023-08-28 17:54:12,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 69.82758620689656) internal successors, (2025), 29 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:12,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:12,606 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:12,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-28 17:54:12,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:54:12,806 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:12,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:12,807 INFO L85 PathProgramCache]: Analyzing trace with hash -32827632, now seen corresponding path program 2 times [2023-08-28 17:54:12,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:12,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258730507] [2023-08-28 17:54:12,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:12,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:13,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:13,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:13,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258730507] [2023-08-28 17:54:13,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258730507] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:54:13,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082453048] [2023-08-28 17:54:13,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-28 17:54:13,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:54:13,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:54:13,742 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:54:13,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-28 17:54:14,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-28 17:54:14,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-28 17:54:14,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 53 conjunts are in the unsatisfiable core [2023-08-28 17:54:14,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:54:14,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:54:14,038 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-28 17:54:14,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2023-08-28 17:54:14,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:54:14,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:54:14,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-28 17:54:14,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:54:14,559 INFO L321 Elim1Store]: treesize reduction 50, result has 12.3 percent of original size [2023-08-28 17:54:14,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 40 treesize of output 22 [2023-08-28 17:54:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:14,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:54:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:15,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082453048] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:54:15,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:54:15,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-28 17:54:15,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033406907] [2023-08-28 17:54:15,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:54:15,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-28 17:54:15,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:15,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-28 17:54:15,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=701, Unknown=5, NotChecked=0, Total=812 [2023-08-28 17:54:16,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 262 [2023-08-28 17:54:16,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 179 transitions, 1222 flow. Second operand has 29 states, 29 states have (on average 69.82758620689656) internal successors, (2025), 29 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:16,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:16,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 262 [2023-08-28 17:54:16,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:21,617 INFO L130 PetriNetUnfolder]: 10938/20278 cut-off events. [2023-08-28 17:54:21,617 INFO L131 PetriNetUnfolder]: For 38227/38679 co-relation queries the response was YES. [2023-08-28 17:54:21,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62256 conditions, 20278 events. 10938/20278 cut-off events. For 38227/38679 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 164313 event pairs, 1261 based on Foata normal form. 114/19512 useless extension candidates. Maximal degree in co-relation 62214. Up to 3717 conditions per place. [2023-08-28 17:54:21,777 INFO L137 encePairwiseOnDemand]: 247/262 looper letters, 371 selfloop transitions, 151 changer transitions 0/546 dead transitions. [2023-08-28 17:54:21,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 546 transitions, 4230 flow [2023-08-28 17:54:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-28 17:54:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-28 17:54:21,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2077 transitions. [2023-08-28 17:54:21,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30490311215502053 [2023-08-28 17:54:21,789 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2077 transitions. [2023-08-28 17:54:21,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2077 transitions. [2023-08-28 17:54:21,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:21,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2077 transitions. [2023-08-28 17:54:21,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 79.88461538461539) internal successors, (2077), 26 states have internal predecessors, (2077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:21,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 262.0) internal successors, (7074), 27 states have internal predecessors, (7074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:21,805 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 262.0) internal successors, (7074), 27 states have internal predecessors, (7074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:21,805 INFO L175 Difference]: Start difference. First operand has 143 places, 179 transitions, 1222 flow. Second operand 26 states and 2077 transitions. [2023-08-28 17:54:21,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 546 transitions, 4230 flow [2023-08-28 17:54:21,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 546 transitions, 3991 flow, removed 119 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:21,938 INFO L231 Difference]: Finished difference. Result has 187 places, 258 transitions, 2216 flow [2023-08-28 17:54:21,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2216, PETRI_PLACES=187, PETRI_TRANSITIONS=258} [2023-08-28 17:54:21,939 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 122 predicate places. [2023-08-28 17:54:21,940 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 258 transitions, 2216 flow [2023-08-28 17:54:21,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 69.82758620689656) internal successors, (2025), 29 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:21,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:21,941 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:21,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-28 17:54:22,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:54:22,147 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:22,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:22,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1352567084, now seen corresponding path program 3 times [2023-08-28 17:54:22,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:22,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354263710] [2023-08-28 17:54:22,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:22,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:23,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:23,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354263710] [2023-08-28 17:54:23,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354263710] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:54:23,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145146935] [2023-08-28 17:54:23,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-28 17:54:23,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:54:23,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:54:23,295 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:54:23,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-28 17:54:23,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-28 17:54:23,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-28 17:54:23,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 50 conjunts are in the unsatisfiable core [2023-08-28 17:54:23,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:54:23,549 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:54:23,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:54:23,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-08-28 17:54:23,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-08-28 17:54:24,288 INFO L321 Elim1Store]: treesize reduction 50, result has 12.3 percent of original size [2023-08-28 17:54:24,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 47 treesize of output 25 [2023-08-28 17:54:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:24,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:54:24,707 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_337 (Array Int Int)) (|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_43_49| Int) (|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_39_49| Int)) (or (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_337) |c_~#storage~0.base|))) (< (select .cse0 (+ (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_43_49| 8) |c_~#storage~0.offset|)) (+ (select .cse0 (+ (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_39_49| 8) |c_~#storage~0.offset|)) 1))) (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_39_49| 0) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_39_49|) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_43_49|) (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_43_49| 0))) is different from false [2023-08-28 17:54:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-28 17:54:24,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145146935] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:54:24,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:54:24,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-28 17:54:24,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699891713] [2023-08-28 17:54:24,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:54:24,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-28 17:54:24,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:24,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-28 17:54:24,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=659, Unknown=1, NotChecked=52, Total=812 [2023-08-28 17:54:24,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 262 [2023-08-28 17:54:24,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 258 transitions, 2216 flow. Second operand has 29 states, 29 states have (on average 69.82758620689656) internal successors, (2025), 29 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:24,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:24,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 262 [2023-08-28 17:54:24,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:33,428 INFO L130 PetriNetUnfolder]: 15022/27808 cut-off events. [2023-08-28 17:54:33,428 INFO L131 PetriNetUnfolder]: For 75376/76112 co-relation queries the response was YES. [2023-08-28 17:54:33,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90891 conditions, 27808 events. 15022/27808 cut-off events. For 75376/76112 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 236751 event pairs, 2720 based on Foata normal form. 174/26750 useless extension candidates. Maximal degree in co-relation 90829. Up to 6666 conditions per place. [2023-08-28 17:54:33,681 INFO L137 encePairwiseOnDemand]: 247/262 looper letters, 506 selfloop transitions, 220 changer transitions 9/759 dead transitions. [2023-08-28 17:54:33,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 759 transitions, 6395 flow [2023-08-28 17:54:33,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-28 17:54:33,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-28 17:54:33,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3141 transitions. [2023-08-28 17:54:33,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30739870816206694 [2023-08-28 17:54:33,689 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3141 transitions. [2023-08-28 17:54:33,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3141 transitions. [2023-08-28 17:54:33,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:33,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3141 transitions. [2023-08-28 17:54:33,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 80.53846153846153) internal successors, (3141), 39 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:33,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 262.0) internal successors, (10480), 40 states have internal predecessors, (10480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:33,723 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 262.0) internal successors, (10480), 40 states have internal predecessors, (10480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:33,723 INFO L175 Difference]: Start difference. First operand has 187 places, 258 transitions, 2216 flow. Second operand 39 states and 3141 transitions. [2023-08-28 17:54:33,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 759 transitions, 6395 flow [2023-08-28 17:54:34,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 759 transitions, 6192 flow, removed 101 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:34,124 INFO L231 Difference]: Finished difference. Result has 242 places, 351 transitions, 3749 flow [2023-08-28 17:54:34,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=2153, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3749, PETRI_PLACES=242, PETRI_TRANSITIONS=351} [2023-08-28 17:54:34,125 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 177 predicate places. [2023-08-28 17:54:34,125 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 351 transitions, 3749 flow [2023-08-28 17:54:34,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 69.82758620689656) internal successors, (2025), 29 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:34,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:34,126 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:34,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-28 17:54:34,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-28 17:54:34,326 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:34,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:34,327 INFO L85 PathProgramCache]: Analyzing trace with hash 968054380, now seen corresponding path program 4 times [2023-08-28 17:54:34,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:34,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52922495] [2023-08-28 17:54:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:34,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:35,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:35,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52922495] [2023-08-28 17:54:35,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52922495] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:54:35,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871265905] [2023-08-28 17:54:35,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-28 17:54:35,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:54:35,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:54:35,449 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:54:35,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-28 17:54:35,689 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-28 17:54:35,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-28 17:54:35,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-28 17:54:35,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:54:35,711 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:54:35,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:54:35,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:54:35,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:54:36,141 INFO L321 Elim1Store]: treesize reduction 50, result has 12.3 percent of original size [2023-08-28 17:54:36,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 40 treesize of output 22 [2023-08-28 17:54:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:36,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:54:36,528 WARN L839 $PredicateComparison]: unable to prove that (forall ((|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_45_49| Int) (v_ArrVal_383 (Array Int Int)) (|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_41_49| Int)) (or (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_45_49| 0) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_383) |c_~#storage~0.base|))) (< (select .cse0 (+ (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_45_49| 8) |c_~#storage~0.offset|)) (+ (select .cse0 (+ (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_41_49| 8) |c_~#storage~0.offset|)) 1))) (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_41_49| 0) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_41_49|) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_45_49|))) is different from false [2023-08-28 17:54:36,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-28 17:54:36,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871265905] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:54:36,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:54:36,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-28 17:54:36,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317887088] [2023-08-28 17:54:36,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:54:36,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-28 17:54:36,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:36,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-28 17:54:36,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=659, Unknown=1, NotChecked=52, Total=812 [2023-08-28 17:54:36,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 262 [2023-08-28 17:54:36,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 351 transitions, 3749 flow. Second operand has 29 states, 29 states have (on average 70.82758620689656) internal successors, (2054), 29 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:36,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:36,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 262 [2023-08-28 17:54:36,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:43,803 INFO L130 PetriNetUnfolder]: 17135/31831 cut-off events. [2023-08-28 17:54:43,803 INFO L131 PetriNetUnfolder]: For 108651/109571 co-relation queries the response was YES. [2023-08-28 17:54:44,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106008 conditions, 31831 events. 17135/31831 cut-off events. For 108651/109571 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 279004 event pairs, 2229 based on Foata normal form. 224/30622 useless extension candidates. Maximal degree in co-relation 105928. Up to 8446 conditions per place. [2023-08-28 17:54:44,168 INFO L137 encePairwiseOnDemand]: 247/262 looper letters, 425 selfloop transitions, 237 changer transitions 2/688 dead transitions. [2023-08-28 17:54:44,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 688 transitions, 7216 flow [2023-08-28 17:54:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-28 17:54:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-28 17:54:44,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1763 transitions. [2023-08-28 17:54:44,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3204289349327517 [2023-08-28 17:54:44,173 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1763 transitions. [2023-08-28 17:54:44,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1763 transitions. [2023-08-28 17:54:44,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:44,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1763 transitions. [2023-08-28 17:54:44,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 83.95238095238095) internal successors, (1763), 21 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 262.0) internal successors, (5764), 22 states have internal predecessors, (5764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,182 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 262.0) internal successors, (5764), 22 states have internal predecessors, (5764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,182 INFO L175 Difference]: Start difference. First operand has 242 places, 351 transitions, 3749 flow. Second operand 21 states and 1763 transitions. [2023-08-28 17:54:44,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 688 transitions, 7216 flow [2023-08-28 17:54:44,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 688 transitions, 7055 flow, removed 80 selfloop flow, removed 1 redundant places. [2023-08-28 17:54:44,856 INFO L231 Difference]: Finished difference. Result has 274 places, 400 transitions, 4888 flow [2023-08-28 17:54:44,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3596, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4888, PETRI_PLACES=274, PETRI_TRANSITIONS=400} [2023-08-28 17:54:44,857 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 209 predicate places. [2023-08-28 17:54:44,857 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 400 transitions, 4888 flow [2023-08-28 17:54:44,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 70.82758620689656) internal successors, (2054), 29 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:44,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:54:44,858 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:54:44,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-28 17:54:45,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-28 17:54:45,068 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:54:45,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:54:45,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2146813308, now seen corresponding path program 5 times [2023-08-28 17:54:45,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:54:45,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681056634] [2023-08-28 17:54:45,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:54:45,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:54:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:54:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:46,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:54:46,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681056634] [2023-08-28 17:54:46,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681056634] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:54:46,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399761857] [2023-08-28 17:54:46,087 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-28 17:54:46,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:54:46,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:54:46,088 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:54:46,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-28 17:54:46,286 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-28 17:54:46,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-28 17:54:46,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-28 17:54:46,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:54:46,300 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:54:46,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:54:46,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:54:46,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:54:46,847 INFO L321 Elim1Store]: treesize reduction 50, result has 12.3 percent of original size [2023-08-28 17:54:46,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 40 treesize of output 22 [2023-08-28 17:54:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:46,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:54:47,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:54:47,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399761857] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:54:47,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:54:47,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-28 17:54:47,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155478543] [2023-08-28 17:54:47,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:54:47,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-28 17:54:47,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:54:47,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-28 17:54:47,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=706, Unknown=6, NotChecked=0, Total=812 [2023-08-28 17:54:49,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 262 [2023-08-28 17:54:49,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 400 transitions, 4888 flow. Second operand has 29 states, 29 states have (on average 69.82758620689656) internal successors, (2025), 29 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:49,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:54:49,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 262 [2023-08-28 17:54:49,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:54:59,162 INFO L130 PetriNetUnfolder]: 21779/40191 cut-off events. [2023-08-28 17:54:59,162 INFO L131 PetriNetUnfolder]: For 168707/169859 co-relation queries the response was YES. [2023-08-28 17:54:59,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138542 conditions, 40191 events. 21779/40191 cut-off events. For 168707/169859 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 365134 event pairs, 4214 based on Foata normal form. 324/38731 useless extension candidates. Maximal degree in co-relation 138449. Up to 9883 conditions per place. [2023-08-28 17:54:59,754 INFO L137 encePairwiseOnDemand]: 247/262 looper letters, 431 selfloop transitions, 293 changer transitions 5/753 dead transitions. [2023-08-28 17:54:59,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 753 transitions, 8555 flow [2023-08-28 17:54:59,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-28 17:54:59,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-28 17:54:59,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2034 transitions. [2023-08-28 17:54:59,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3105343511450382 [2023-08-28 17:54:59,761 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2034 transitions. [2023-08-28 17:54:59,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2034 transitions. [2023-08-28 17:54:59,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:54:59,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2034 transitions. [2023-08-28 17:54:59,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 81.36) internal successors, (2034), 25 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:59,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 262.0) internal successors, (6812), 26 states have internal predecessors, (6812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:59,775 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 262.0) internal successors, (6812), 26 states have internal predecessors, (6812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:54:59,775 INFO L175 Difference]: Start difference. First operand has 274 places, 400 transitions, 4888 flow. Second operand 25 states and 2034 transitions. [2023-08-28 17:54:59,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 753 transitions, 8555 flow [2023-08-28 17:55:01,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 753 transitions, 8199 flow, removed 60 selfloop flow, removed 4 redundant places. [2023-08-28 17:55:01,043 INFO L231 Difference]: Finished difference. Result has 305 places, 471 transitions, 6378 flow [2023-08-28 17:55:01,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=4587, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6378, PETRI_PLACES=305, PETRI_TRANSITIONS=471} [2023-08-28 17:55:01,044 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 240 predicate places. [2023-08-28 17:55:01,044 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 471 transitions, 6378 flow [2023-08-28 17:55:01,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 69.82758620689656) internal successors, (2025), 29 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:01,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:55:01,045 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:55:01,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-28 17:55:01,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:55:01,245 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:55:01,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:55:01,246 INFO L85 PathProgramCache]: Analyzing trace with hash -991611910, now seen corresponding path program 6 times [2023-08-28 17:55:01,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:55:01,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134592720] [2023-08-28 17:55:01,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:01,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:55:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:02,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:55:02,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134592720] [2023-08-28 17:55:02,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134592720] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:55:02,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374060009] [2023-08-28 17:55:02,373 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-28 17:55:02,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:55:02,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:55:02,375 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:55:02,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-28 17:55:02,662 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-28 17:55:02,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-28 17:55:02,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-28 17:55:02,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:55:02,682 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:55:02,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:55:02,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-08-28 17:55:02,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-08-28 17:55:03,372 INFO L321 Elim1Store]: treesize reduction 50, result has 12.3 percent of original size [2023-08-28 17:55:03,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 47 treesize of output 25 [2023-08-28 17:55:03,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:03,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:55:03,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:03,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374060009] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:55:03,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:55:03,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-28 17:55:03,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680497493] [2023-08-28 17:55:03,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:55:03,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-28 17:55:03,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:55:03,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-28 17:55:03,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=698, Unknown=7, NotChecked=0, Total=812 [2023-08-28 17:55:06,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 262 [2023-08-28 17:55:06,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 471 transitions, 6378 flow. Second operand has 29 states, 29 states have (on average 69.82758620689656) internal successors, (2025), 29 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:06,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:55:06,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 262 [2023-08-28 17:55:06,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:55:20,094 INFO L130 PetriNetUnfolder]: 25944/48124 cut-off events. [2023-08-28 17:55:20,094 INFO L131 PetriNetUnfolder]: For 245222/246574 co-relation queries the response was YES. [2023-08-28 17:55:20,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171480 conditions, 48124 events. 25944/48124 cut-off events. For 245222/246574 co-relation queries the response was YES. Maximal size of possible extension queue 1404. Compared 452143 event pairs, 3275 based on Foata normal form. 356/46374 useless extension candidates. Maximal degree in co-relation 171377. Up to 13550 conditions per place. [2023-08-28 17:55:21,101 INFO L137 encePairwiseOnDemand]: 247/262 looper letters, 618 selfloop transitions, 353 changer transitions 4/999 dead transitions. [2023-08-28 17:55:21,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 999 transitions, 12163 flow [2023-08-28 17:55:21,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-28 17:55:21,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-28 17:55:21,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3210 transitions. [2023-08-28 17:55:21,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3062977099236641 [2023-08-28 17:55:21,108 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3210 transitions. [2023-08-28 17:55:21,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3210 transitions. [2023-08-28 17:55:21,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:55:21,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3210 transitions. [2023-08-28 17:55:21,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 80.25) internal successors, (3210), 40 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:21,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 262.0) internal successors, (10742), 41 states have internal predecessors, (10742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:21,123 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 262.0) internal successors, (10742), 41 states have internal predecessors, (10742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:21,123 INFO L175 Difference]: Start difference. First operand has 305 places, 471 transitions, 6378 flow. Second operand 40 states and 3210 transitions. [2023-08-28 17:55:21,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 999 transitions, 12163 flow [2023-08-28 17:55:22,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 999 transitions, 12062 flow, removed 50 selfloop flow, removed 1 redundant places. [2023-08-28 17:55:22,966 INFO L231 Difference]: Finished difference. Result has 365 places, 569 transitions, 8908 flow [2023-08-28 17:55:22,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=6313, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=8908, PETRI_PLACES=365, PETRI_TRANSITIONS=569} [2023-08-28 17:55:22,966 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 300 predicate places. [2023-08-28 17:55:22,967 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 569 transitions, 8908 flow [2023-08-28 17:55:22,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 69.82758620689656) internal successors, (2025), 29 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:22,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:55:22,967 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:55:22,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-28 17:55:23,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-28 17:55:23,174 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:55:23,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:55:23,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1013815926, now seen corresponding path program 7 times [2023-08-28 17:55:23,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:55:23,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990374965] [2023-08-28 17:55:23,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:23,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:55:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:24,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:55:24,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990374965] [2023-08-28 17:55:24,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990374965] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:55:24,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557839953] [2023-08-28 17:55:24,331 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-28 17:55:24,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:55:24,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:55:24,332 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:55:24,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-28 17:55:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:24,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 50 conjunts are in the unsatisfiable core [2023-08-28 17:55:24,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:55:24,515 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:55:24,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:55:24,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:55:24,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:55:24,965 INFO L321 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2023-08-28 17:55:24,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 40 treesize of output 22 [2023-08-28 17:55:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:25,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:55:25,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2023-08-28 17:55:25,392 WARN L839 $PredicateComparison]: unable to prove that (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_47_49| Int) (|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_51_49| Int) (v_ArrVal_521 (Array Int Int))) (or (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_47_49| 0) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_51_49|) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_521) |c_~#storage~0.base|))) (< (select .cse0 (+ (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_51_49| 8) |c_~#storage~0.offset|)) (+ (select .cse0 (+ (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_47_49| 8) |c_~#storage~0.offset|)) 1))) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_47_49|) (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_51_49| 0))) is different from false [2023-08-28 17:55:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-28 17:55:25,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557839953] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:55:25,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:55:25,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-08-28 17:55:25,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147069187] [2023-08-28 17:55:25,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:55:25,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-28 17:55:25,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:55:25,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-28 17:55:25,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=613, Unknown=1, NotChecked=50, Total=756 [2023-08-28 17:55:25,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 262 [2023-08-28 17:55:25,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 569 transitions, 8908 flow. Second operand has 28 states, 28 states have (on average 69.75) internal successors, (1953), 28 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:25,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:55:25,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 262 [2023-08-28 17:55:25,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:55:39,322 INFO L130 PetriNetUnfolder]: 26097/48321 cut-off events. [2023-08-28 17:55:39,322 INFO L131 PetriNetUnfolder]: For 323058/324584 co-relation queries the response was YES. [2023-08-28 17:55:40,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181577 conditions, 48321 events. 26097/48321 cut-off events. For 323058/324584 co-relation queries the response was YES. Maximal size of possible extension queue 1491. Compared 454059 event pairs, 5770 based on Foata normal form. 382/46526 useless extension candidates. Maximal degree in co-relation 181452. Up to 14695 conditions per place. [2023-08-28 17:55:40,243 INFO L137 encePairwiseOnDemand]: 247/262 looper letters, 471 selfloop transitions, 351 changer transitions 5/851 dead transitions. [2023-08-28 17:55:40,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 851 transitions, 12077 flow [2023-08-28 17:55:40,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-28 17:55:40,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-28 17:55:40,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2043 transitions. [2023-08-28 17:55:40,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31190839694656486 [2023-08-28 17:55:40,246 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2043 transitions. [2023-08-28 17:55:40,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2043 transitions. [2023-08-28 17:55:40,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:55:40,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2043 transitions. [2023-08-28 17:55:40,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 81.72) internal successors, (2043), 25 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:40,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 262.0) internal successors, (6812), 26 states have internal predecessors, (6812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:40,254 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 262.0) internal successors, (6812), 26 states have internal predecessors, (6812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:40,254 INFO L175 Difference]: Start difference. First operand has 365 places, 569 transitions, 8908 flow. Second operand 25 states and 2043 transitions. [2023-08-28 17:55:40,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 851 transitions, 12077 flow [2023-08-28 17:55:42,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 851 transitions, 11568 flow, removed 188 selfloop flow, removed 7 redundant places. [2023-08-28 17:55:42,527 INFO L231 Difference]: Finished difference. Result has 384 places, 576 transitions, 9509 flow [2023-08-28 17:55:42,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=7937, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=9509, PETRI_PLACES=384, PETRI_TRANSITIONS=576} [2023-08-28 17:55:42,528 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 319 predicate places. [2023-08-28 17:55:42,528 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 576 transitions, 9509 flow [2023-08-28 17:55:42,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 69.75) internal successors, (1953), 28 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:42,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:55:42,528 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:55:42,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-28 17:55:42,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-28 17:55:42,729 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:55:42,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:55:42,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1735530370, now seen corresponding path program 8 times [2023-08-28 17:55:42,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:55:42,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033109413] [2023-08-28 17:55:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:55:42,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:55:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:55:43,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:43,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:55:43,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033109413] [2023-08-28 17:55:43,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033109413] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:55:43,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714404378] [2023-08-28 17:55:43,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-28 17:55:43,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:55:43,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:55:43,642 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:55:43,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-28 17:55:43,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-28 17:55:43,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-28 17:55:43,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-28 17:55:43,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:55:43,893 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:55:43,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:55:43,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-08-28 17:55:43,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-08-28 17:55:44,643 INFO L321 Elim1Store]: treesize reduction 50, result has 12.3 percent of original size [2023-08-28 17:55:44,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 47 treesize of output 25 [2023-08-28 17:55:44,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:44,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:55:45,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:55:45,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714404378] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:55:45,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:55:45,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-28 17:55:45,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131168974] [2023-08-28 17:55:45,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:55:45,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-28 17:55:45,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:55:45,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-28 17:55:45,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=709, Unknown=4, NotChecked=0, Total=812 [2023-08-28 17:55:46,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 262 [2023-08-28 17:55:46,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 576 transitions, 9509 flow. Second operand has 29 states, 29 states have (on average 69.82758620689656) internal successors, (2025), 29 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:55:46,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:55:46,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 262 [2023-08-28 17:55:46,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:56:03,074 INFO L130 PetriNetUnfolder]: 28995/53745 cut-off events. [2023-08-28 17:56:03,074 INFO L131 PetriNetUnfolder]: For 414199/415767 co-relation queries the response was YES. [2023-08-28 17:56:04,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203730 conditions, 53745 events. 28995/53745 cut-off events. For 414199/415767 co-relation queries the response was YES. Maximal size of possible extension queue 1653. Compared 512820 event pairs, 6180 based on Foata normal form. 410/51758 useless extension candidates. Maximal degree in co-relation 203598. Up to 16623 conditions per place. [2023-08-28 17:56:04,257 INFO L137 encePairwiseOnDemand]: 247/262 looper letters, 651 selfloop transitions, 375 changer transitions 9/1059 dead transitions. [2023-08-28 17:56:04,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1059 transitions, 15031 flow [2023-08-28 17:56:04,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-28 17:56:04,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-28 17:56:04,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3078 transitions. [2023-08-28 17:56:04,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30916030534351147 [2023-08-28 17:56:04,262 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3078 transitions. [2023-08-28 17:56:04,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3078 transitions. [2023-08-28 17:56:04,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:56:04,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3078 transitions. [2023-08-28 17:56:04,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 81.0) internal successors, (3078), 38 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:56:04,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 262.0) internal successors, (10218), 39 states have internal predecessors, (10218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:56:04,275 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 262.0) internal successors, (10218), 39 states have internal predecessors, (10218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:56:04,275 INFO L175 Difference]: Start difference. First operand has 384 places, 576 transitions, 9509 flow. Second operand 38 states and 3078 transitions. [2023-08-28 17:56:04,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1059 transitions, 15031 flow [2023-08-28 17:56:07,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 1059 transitions, 14831 flow, removed 49 selfloop flow, removed 7 redundant places. [2023-08-28 17:56:07,302 INFO L231 Difference]: Finished difference. Result has 437 places, 649 transitions, 11861 flow [2023-08-28 17:56:07,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=9324, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=11861, PETRI_PLACES=437, PETRI_TRANSITIONS=649} [2023-08-28 17:56:07,303 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 372 predicate places. [2023-08-28 17:56:07,303 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 649 transitions, 11861 flow [2023-08-28 17:56:07,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 69.82758620689656) internal successors, (2025), 29 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:56:07,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:56:07,304 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:56:07,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-28 17:56:07,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:56:07,505 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:56:07,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:56:07,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1202131096, now seen corresponding path program 9 times [2023-08-28 17:56:07,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:56:07,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310542968] [2023-08-28 17:56:07,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:56:07,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:56:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:56:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:56:08,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:56:08,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310542968] [2023-08-28 17:56:08,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310542968] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:56:08,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970766471] [2023-08-28 17:56:08,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-28 17:56:08,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:56:08,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:56:08,942 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:56:08,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-28 17:56:09,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-28 17:56:09,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-28 17:56:09,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-28 17:56:09,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:56:09,198 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:56:09,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:56:09,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-08-28 17:56:09,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-08-28 17:56:09,615 INFO L321 Elim1Store]: treesize reduction 50, result has 12.3 percent of original size [2023-08-28 17:56:09,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 47 treesize of output 25 [2023-08-28 17:56:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:56:09,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:56:09,994 WARN L839 $PredicateComparison]: unable to prove that (forall ((|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_51_49| Int) (v_ArrVal_613 (Array Int Int)) (|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_55_49| Int)) (or (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_51_49| 0) (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_55_49| 0) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_51_49|) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_613) |c_~#storage~0.base|))) (< (select .cse0 (+ (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_55_49| 8) |c_~#storage~0.offset|)) (+ (select .cse0 (+ (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_51_49| 8) |c_~#storage~0.offset|)) 1))) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_55_49|))) is different from false [2023-08-28 17:56:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-28 17:56:10,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970766471] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:56:10,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:56:10,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-28 17:56:10,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098358013] [2023-08-28 17:56:10,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:56:10,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-28 17:56:10,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:56:10,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-28 17:56:10,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=661, Unknown=1, NotChecked=52, Total=812 [2023-08-28 17:56:10,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 262 [2023-08-28 17:56:10,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 649 transitions, 11861 flow. Second operand has 29 states, 29 states have (on average 69.82758620689656) internal successors, (2025), 29 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:56:10,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:56:10,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 262 [2023-08-28 17:56:10,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:56:32,110 INFO L130 PetriNetUnfolder]: 39364/72396 cut-off events. [2023-08-28 17:56:32,110 INFO L131 PetriNetUnfolder]: For 653564/655498 co-relation queries the response was YES. [2023-08-28 17:56:33,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281496 conditions, 72396 events. 39364/72396 cut-off events. For 653564/655498 co-relation queries the response was YES. Maximal size of possible extension queue 2105. Compared 707349 event pairs, 14125 based on Foata normal form. 322/69399 useless extension candidates. Maximal degree in co-relation 281341. Up to 27858 conditions per place. [2023-08-28 17:56:33,910 INFO L137 encePairwiseOnDemand]: 247/262 looper letters, 601 selfloop transitions, 350 changer transitions 5/980 dead transitions. [2023-08-28 17:56:33,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 980 transitions, 17149 flow [2023-08-28 17:56:33,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-28 17:56:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-28 17:56:33,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1565 transitions. [2023-08-28 17:56:33,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31438328646042585 [2023-08-28 17:56:33,913 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1565 transitions. [2023-08-28 17:56:33,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1565 transitions. [2023-08-28 17:56:33,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:56:33,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1565 transitions. [2023-08-28 17:56:33,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 82.36842105263158) internal successors, (1565), 19 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:56:33,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 262.0) internal successors, (5240), 20 states have internal predecessors, (5240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:56:33,920 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 262.0) internal successors, (5240), 20 states have internal predecessors, (5240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:56:33,920 INFO L175 Difference]: Start difference. First operand has 437 places, 649 transitions, 11861 flow. Second operand 19 states and 1565 transitions. [2023-08-28 17:56:33,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 980 transitions, 17149 flow [2023-08-28 17:56:39,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 980 transitions, 16816 flow, removed 166 selfloop flow, removed 1 redundant places. [2023-08-28 17:56:39,164 INFO L231 Difference]: Finished difference. Result has 463 places, 711 transitions, 14011 flow [2023-08-28 17:56:39,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=11411, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=14011, PETRI_PLACES=463, PETRI_TRANSITIONS=711} [2023-08-28 17:56:39,165 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 398 predicate places. [2023-08-28 17:56:39,165 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 711 transitions, 14011 flow [2023-08-28 17:56:39,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 69.82758620689656) internal successors, (2025), 29 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:56:39,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:56:39,166 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:56:39,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-28 17:56:39,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:56:39,367 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:56:39,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:56:39,367 INFO L85 PathProgramCache]: Analyzing trace with hash 149660378, now seen corresponding path program 10 times [2023-08-28 17:56:39,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:56:39,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949051503] [2023-08-28 17:56:39,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:56:39,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:56:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:56:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:56:40,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:56:40,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949051503] [2023-08-28 17:56:40,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949051503] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:56:40,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283774635] [2023-08-28 17:56:40,274 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-28 17:56:40,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:56:40,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:56:40,275 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:56:40,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-28 17:56:40,437 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-28 17:56:40,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-28 17:56:40,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-28 17:56:40,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:56:40,450 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:56:40,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:56:40,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:56:40,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:56:40,817 INFO L321 Elim1Store]: treesize reduction 50, result has 12.3 percent of original size [2023-08-28 17:56:40,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 40 treesize of output 22 [2023-08-28 17:56:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:56:40,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:56:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:56:41,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283774635] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:56:41,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:56:41,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-28 17:56:41,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020854936] [2023-08-28 17:56:41,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:56:41,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-28 17:56:41,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:56:41,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-28 17:56:41,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=708, Unknown=2, NotChecked=0, Total=812 [2023-08-28 17:56:43,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 262 [2023-08-28 17:56:43,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 711 transitions, 14011 flow. Second operand has 29 states, 29 states have (on average 69.82758620689656) internal successors, (2025), 29 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:56:43,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:56:43,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 262 [2023-08-28 17:56:43,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:57:08,030 INFO L130 PetriNetUnfolder]: 41283/76077 cut-off events. [2023-08-28 17:57:08,031 INFO L131 PetriNetUnfolder]: For 817328/819288 co-relation queries the response was YES. [2023-08-28 17:57:09,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307766 conditions, 76077 events. 41283/76077 cut-off events. For 817328/819288 co-relation queries the response was YES. Maximal size of possible extension queue 2197. Compared 750593 event pairs, 14204 based on Foata normal form. 388/72975 useless extension candidates. Maximal degree in co-relation 307602. Up to 28664 conditions per place. [2023-08-28 17:57:10,117 INFO L137 encePairwiseOnDemand]: 247/262 looper letters, 672 selfloop transitions, 393 changer transitions 8/1097 dead transitions. [2023-08-28 17:57:10,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 1097 transitions, 19530 flow [2023-08-28 17:57:10,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-28 17:57:10,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-28 17:57:10,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2281 transitions. [2023-08-28 17:57:10,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31093238822246455 [2023-08-28 17:57:10,119 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2281 transitions. [2023-08-28 17:57:10,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2281 transitions. [2023-08-28 17:57:10,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:57:10,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2281 transitions. [2023-08-28 17:57:10,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 81.46428571428571) internal successors, (2281), 28 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:57:10,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 262.0) internal successors, (7598), 29 states have internal predecessors, (7598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:57:10,127 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 262.0) internal successors, (7598), 29 states have internal predecessors, (7598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:57:10,127 INFO L175 Difference]: Start difference. First operand has 463 places, 711 transitions, 14011 flow. Second operand 28 states and 2281 transitions. [2023-08-28 17:57:10,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 1097 transitions, 19530 flow [2023-08-28 17:57:16,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 1097 transitions, 19323 flow, removed 30 selfloop flow, removed 9 redundant places. [2023-08-28 17:57:16,994 INFO L231 Difference]: Finished difference. Result has 492 places, 745 transitions, 15690 flow [2023-08-28 17:57:16,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=13810, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=15690, PETRI_PLACES=492, PETRI_TRANSITIONS=745} [2023-08-28 17:57:16,996 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 427 predicate places. [2023-08-28 17:57:16,996 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 745 transitions, 15690 flow [2023-08-28 17:57:16,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 69.82758620689656) internal successors, (2025), 29 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:57:16,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:57:16,996 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:57:17,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-28 17:57:17,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-28 17:57:17,203 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:57:17,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:57:17,204 INFO L85 PathProgramCache]: Analyzing trace with hash 193670960, now seen corresponding path program 11 times [2023-08-28 17:57:17,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:57:17,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336433702] [2023-08-28 17:57:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:57:17,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:57:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:57:18,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:57:18,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:57:18,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336433702] [2023-08-28 17:57:18,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336433702] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:57:18,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511200656] [2023-08-28 17:57:18,139 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-28 17:57:18,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:57:18,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:57:18,141 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:57:18,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-28 17:57:18,432 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-28 17:57:18,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-28 17:57:18,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-28 17:57:18,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:57:18,444 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:57:18,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:57:18,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:57:18,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-28 17:57:19,038 INFO L321 Elim1Store]: treesize reduction 50, result has 12.3 percent of original size [2023-08-28 17:57:19,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 40 treesize of output 22 [2023-08-28 17:57:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:57:19,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:57:19,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:57:19,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511200656] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:57:19,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:57:19,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-28 17:57:19,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180226428] [2023-08-28 17:57:19,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:57:19,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-28 17:57:19,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:57:19,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-28 17:57:19,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=697, Unknown=9, NotChecked=0, Total=812 [2023-08-28 17:57:23,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 262 [2023-08-28 17:57:23,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 745 transitions, 15690 flow. Second operand has 29 states, 29 states have (on average 92.0) internal successors, (2668), 29 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:57:23,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:57:23,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 262 [2023-08-28 17:57:23,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:57:38,578 INFO L130 PetriNetUnfolder]: 18191/43599 cut-off events. [2023-08-28 17:57:38,578 INFO L131 PetriNetUnfolder]: For 704299/707295 co-relation queries the response was YES. [2023-08-28 17:57:40,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197440 conditions, 43599 events. 18191/43599 cut-off events. For 704299/707295 co-relation queries the response was YES. Maximal size of possible extension queue 1749. Compared 497969 event pairs, 4882 based on Foata normal form. 908/41291 useless extension candidates. Maximal degree in co-relation 197265. Up to 9460 conditions per place. [2023-08-28 17:57:40,172 INFO L137 encePairwiseOnDemand]: 246/262 looper letters, 564 selfloop transitions, 501 changer transitions 9/1106 dead transitions. [2023-08-28 17:57:40,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 1106 transitions, 22723 flow [2023-08-28 17:57:40,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-28 17:57:40,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-28 17:57:40,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3297 transitions. [2023-08-28 17:57:40,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813324080499653 [2023-08-28 17:57:40,175 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3297 transitions. [2023-08-28 17:57:40,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3297 transitions. [2023-08-28 17:57:40,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:57:40,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3297 transitions. [2023-08-28 17:57:40,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 99.9090909090909) internal successors, (3297), 33 states have internal predecessors, (3297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:57:40,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 262.0) internal successors, (8908), 34 states have internal predecessors, (8908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:57:40,184 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 262.0) internal successors, (8908), 34 states have internal predecessors, (8908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:57:40,184 INFO L175 Difference]: Start difference. First operand has 492 places, 745 transitions, 15690 flow. Second operand 33 states and 3297 transitions. [2023-08-28 17:57:40,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 1106 transitions, 22723 flow [2023-08-28 17:57:44,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 1106 transitions, 22327 flow, removed 99 selfloop flow, removed 11 redundant places. [2023-08-28 17:57:44,783 INFO L231 Difference]: Finished difference. Result has 527 places, 844 transitions, 18812 flow [2023-08-28 17:57:44,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=15244, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=410, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=18812, PETRI_PLACES=527, PETRI_TRANSITIONS=844} [2023-08-28 17:57:44,784 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 462 predicate places. [2023-08-28 17:57:44,784 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 844 transitions, 18812 flow [2023-08-28 17:57:44,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 92.0) internal successors, (2668), 29 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:57:44,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:57:44,785 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:57:44,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-28 17:57:44,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-28 17:57:44,989 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-28 17:57:44,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:57:44,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1020403680, now seen corresponding path program 12 times [2023-08-28 17:57:44,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:57:44,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464688277] [2023-08-28 17:57:44,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:57:44,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:57:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:57:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:57:45,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:57:45,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464688277] [2023-08-28 17:57:45,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464688277] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-28 17:57:45,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509909345] [2023-08-28 17:57:45,747 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-28 17:57:45,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-28 17:57:45,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:57:45,749 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-28 17:57:45,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-28 17:57:45,995 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-28 17:57:45,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-28 17:57:45,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-28 17:57:45,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-28 17:57:46,008 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-28 17:57:46,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-28 17:57:46,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-08-28 17:57:46,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-08-28 17:57:46,647 INFO L321 Elim1Store]: treesize reduction 50, result has 12.3 percent of original size [2023-08-28 17:57:46,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 47 treesize of output 25 [2023-08-28 17:57:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:57:46,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-28 17:57:46,974 WARN L839 $PredicateComparison]: unable to prove that (forall ((|aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_61_49| Int) (|aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_57_49| Int) (v_ArrVal_752 (Array Int Int))) (or (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_752) |c_~#storage~0.base|))) (< (select .cse0 (+ (* |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_61_49| 8) |c_~#storage~0.offset|)) (+ 1 (select .cse0 (+ (* |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_57_49| 8) |c_~#storage~0.offset|))))) (<= 3 |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_57_49|) (< |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_61_49| 0) (< |aux_div_v_thr1Thread1of2ForFork0_~offset~0#1_57_49| 0) (<= 3 |aux_div_v_thr1Thread2of2ForFork0_~offset~0#1_61_49|))) is different from false [2023-08-28 17:57:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-28 17:57:47,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509909345] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-28 17:57:47,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-28 17:57:47,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 29 [2023-08-28 17:57:47,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497053211] [2023-08-28 17:57:47,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-28 17:57:47,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-28 17:57:47,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:57:47,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-28 17:57:47,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=702, Unknown=1, NotChecked=54, Total=870 [2023-08-28 17:57:47,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 262 [2023-08-28 17:57:47,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 844 transitions, 18812 flow. Second operand has 30 states, 30 states have (on average 68.73333333333333) internal successors, (2062), 30 states have internal predecessors, (2062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:57:47,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:57:47,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 262 [2023-08-28 17:57:47,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand