./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/queue_longer.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/queue_longer.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 22:36:18,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 22:36:18,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 22:36:18,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 22:36:18,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 22:36:18,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 22:36:18,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 22:36:18,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 22:36:18,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 22:36:18,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 22:36:18,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 22:36:18,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 22:36:18,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 22:36:18,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 22:36:18,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 22:36:18,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 22:36:18,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 22:36:18,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 22:36:18,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 22:36:18,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 22:36:18,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 22:36:18,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 22:36:18,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 22:36:18,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 22:36:18,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 22:36:18,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 22:36:18,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 22:36:18,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 22:36:18,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 22:36:18,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 22:36:18,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 22:36:18,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 22:36:18,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 22:36:18,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 22:36:18,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 22:36:18,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 22:36:18,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 22:36:18,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 22:36:18,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 22:36:18,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 22:36:18,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 22:36:18,875 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 22:36:18,906 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 22:36:18,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 22:36:18,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 22:36:18,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 22:36:18,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 22:36:18,917 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 22:36:18,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 22:36:18,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 22:36:18,918 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 22:36:18,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 22:36:18,919 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 22:36:18,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 22:36:18,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 22:36:18,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 22:36:18,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 22:36:18,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 22:36:18,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 22:36:18,921 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 22:36:18,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 22:36:18,921 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 22:36:18,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 22:36:18,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 22:36:18,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 22:36:18,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 22:36:18,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:36:18,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 22:36:18,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 22:36:18,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 22:36:18,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 22:36:18,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 22:36:18,923 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 22:36:18,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 22:36:18,924 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 22:36:18,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 22:36:18,924 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 22:36:18,924 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 22:36:19,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 22:36:19,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 22:36:19,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 22:36:19,255 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 22:36:19,255 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 22:36:19,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longer.i [2023-08-30 22:36:20,375 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 22:36:20,635 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 22:36:20,637 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i [2023-08-30 22:36:20,651 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ed23970/9e27b7a7eae14863815472489bc4f4c9/FLAG396e0b426 [2023-08-30 22:36:20,662 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ed23970/9e27b7a7eae14863815472489bc4f4c9 [2023-08-30 22:36:20,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 22:36:20,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 22:36:20,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 22:36:20,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 22:36:20,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 22:36:20,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:36:20" (1/1) ... [2023-08-30 22:36:20,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30ddd628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:20, skipping insertion in model container [2023-08-30 22:36:20,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:36:20" (1/1) ... [2023-08-30 22:36:20,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 22:36:20,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 22:36:21,176 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/queue_longer.i[43296,43309] [2023-08-30 22:36:21,184 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/queue_longer.i[43503,43516] [2023-08-30 22:36:21,190 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/queue_longer.i[43783,43796] [2023-08-30 22:36:21,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:36:21,209 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 22:36:21,261 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/queue_longer.i[43296,43309] [2023-08-30 22:36:21,266 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/queue_longer.i[43503,43516] [2023-08-30 22:36:21,271 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/queue_longer.i[43783,43796] [2023-08-30 22:36:21,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:36:21,347 INFO L208 MainTranslator]: Completed translation [2023-08-30 22:36:21,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:21 WrapperNode [2023-08-30 22:36:21,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 22:36:21,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 22:36:21,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 22:36:21,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 22:36:21,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:21" (1/1) ... [2023-08-30 22:36:21,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:21" (1/1) ... [2023-08-30 22:36:21,434 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 243 [2023-08-30 22:36:21,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 22:36:21,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 22:36:21,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 22:36:21,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 22:36:21,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:21" (1/1) ... [2023-08-30 22:36:21,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:21" (1/1) ... [2023-08-30 22:36:21,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:21" (1/1) ... [2023-08-30 22:36:21,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:21" (1/1) ... [2023-08-30 22:36:21,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:21" (1/1) ... [2023-08-30 22:36:21,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:21" (1/1) ... [2023-08-30 22:36:21,479 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:21" (1/1) ... [2023-08-30 22:36:21,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:21" (1/1) ... [2023-08-30 22:36:21,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 22:36:21,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 22:36:21,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 22:36:21,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 22:36:21,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:21" (1/1) ... [2023-08-30 22:36:21,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:36:21,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:36:21,524 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) [2023-08-30 22:36:21,534 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 [2023-08-30 22:36:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 22:36:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 22:36:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 22:36:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 22:36:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 22:36:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 22:36:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 22:36:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 22:36:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 22:36:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 22:36:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 22:36:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 22:36:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 22:36:21,565 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 22:36:21,753 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 22:36:21,755 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 22:36:22,107 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 22:36:22,116 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 22:36:22,116 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 22:36:22,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:36:22 BoogieIcfgContainer [2023-08-30 22:36:22,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 22:36:22,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 22:36:22,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 22:36:22,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 22:36:22,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:36:20" (1/3) ... [2023-08-30 22:36:22,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35477b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:36:22, skipping insertion in model container [2023-08-30 22:36:22,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:21" (2/3) ... [2023-08-30 22:36:22,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35477b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:36:22, skipping insertion in model container [2023-08-30 22:36:22,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:36:22" (3/3) ... [2023-08-30 22:36:22,124 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2023-08-30 22:36:22,131 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 22:36:22,139 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 22:36:22,139 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-30 22:36:22,140 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 22:36:22,219 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 22:36:22,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 258 transitions, 532 flow [2023-08-30 22:36:22,362 INFO L130 PetriNetUnfolder]: 15/256 cut-off events. [2023-08-30 22:36:22,363 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 22:36:22,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 256 events. 15/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 359 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-08-30 22:36:22,370 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 258 transitions, 532 flow [2023-08-30 22:36:22,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 247 transitions, 503 flow [2023-08-30 22:36:22,379 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 22:36:22,386 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 247 transitions, 503 flow [2023-08-30 22:36:22,388 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 247 transitions, 503 flow [2023-08-30 22:36:22,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 247 transitions, 503 flow [2023-08-30 22:36:22,440 INFO L130 PetriNetUnfolder]: 15/247 cut-off events. [2023-08-30 22:36:22,440 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 22:36:22,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 247 events. 15/247 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 326 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-08-30 22:36:22,449 INFO L119 LiptonReduction]: Number of co-enabled transitions 15864 [2023-08-30 22:36:28,657 INFO L134 LiptonReduction]: Checked pairs total: 33075 [2023-08-30 22:36:28,658 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-08-30 22:36:28,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 22:36:28,676 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;@20ddf854, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 22:36:28,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 22:36:28,678 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 22:36:28,678 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 22:36:28,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:28,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 22:36:28,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:28,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:28,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2023-08-30 22:36:28,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:28,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779920990] [2023-08-30 22:36:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:28,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:28,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:28,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779920990] [2023-08-30 22:36:28,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779920990] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:28,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:28,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 22:36:28,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037892492] [2023-08-30 22:36:28,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:28,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 22:36:28,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:28,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 22:36:28,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 22:36:28,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 473 [2023-08-30 22:36:28,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 141 flow. Second operand has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:28,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:28,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 473 [2023-08-30 22:36:28,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:29,268 INFO L130 PetriNetUnfolder]: 1540/2645 cut-off events. [2023-08-30 22:36:29,269 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-08-30 22:36:29,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5115 conditions, 2645 events. 1540/2645 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12466 event pairs, 1212 based on Foata normal form. 32/2302 useless extension candidates. Maximal degree in co-relation 4962. Up to 2396 conditions per place. [2023-08-30 22:36:29,283 INFO L137 encePairwiseOnDemand]: 470/473 looper letters, 53 selfloop transitions, 0 changer transitions 0/63 dead transitions. [2023-08-30 22:36:29,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 241 flow [2023-08-30 22:36:29,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 22:36:29,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 22:36:29,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 546 transitions. [2023-08-30 22:36:29,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771670190274841 [2023-08-30 22:36:29,305 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 546 transitions. [2023-08-30 22:36:29,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 546 transitions. [2023-08-30 22:36:29,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:29,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 546 transitions. [2023-08-30 22:36:29,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 273.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,323 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,325 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 141 flow. Second operand 2 states and 546 transitions. [2023-08-30 22:36:29,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 241 flow [2023-08-30 22:36:29,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 236 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 22:36:29,332 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 130 flow [2023-08-30 22:36:29,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2023-08-30 22:36:29,339 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2023-08-30 22:36:29,340 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 130 flow [2023-08-30 22:36:29,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:29,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:29,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 22:36:29,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:29,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:29,346 INFO L85 PathProgramCache]: Analyzing trace with hash 110343563, now seen corresponding path program 1 times [2023-08-30 22:36:29,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:29,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333351139] [2023-08-30 22:36:29,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:29,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:29,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:29,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:29,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333351139] [2023-08-30 22:36:29,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333351139] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:29,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:29,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 22:36:29,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937652965] [2023-08-30 22:36:29,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:29,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 22:36:29,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:29,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 22:36:29,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 22:36:29,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 473 [2023-08-30 22:36:29,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:29,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 473 [2023-08-30 22:36:29,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:29,893 INFO L130 PetriNetUnfolder]: 1508/2611 cut-off events. [2023-08-30 22:36:29,893 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 22:36:29,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5032 conditions, 2611 events. 1508/2611 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 12447 event pairs, 1167 based on Foata normal form. 0/2268 useless extension candidates. Maximal degree in co-relation 5029. Up to 2249 conditions per place. [2023-08-30 22:36:29,904 INFO L137 encePairwiseOnDemand]: 469/473 looper letters, 68 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2023-08-30 22:36:29,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 81 transitions, 310 flow [2023-08-30 22:36:29,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 22:36:29,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 22:36:29,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 792 transitions. [2023-08-30 22:36:29,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2023-08-30 22:36:29,907 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 792 transitions. [2023-08-30 22:36:29,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 792 transitions. [2023-08-30 22:36:29,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:29,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 792 transitions. [2023-08-30 22:36:29,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,913 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,914 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 130 flow. Second operand 3 states and 792 transitions. [2023-08-30 22:36:29,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 81 transitions, 310 flow [2023-08-30 22:36:29,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 81 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 22:36:29,916 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 134 flow [2023-08-30 22:36:29,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2023-08-30 22:36:29,917 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2023-08-30 22:36:29,917 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 134 flow [2023-08-30 22:36:29,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:29,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:29,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 22:36:29,919 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:29,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:29,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1330496416, now seen corresponding path program 1 times [2023-08-30 22:36:29,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:29,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844585618] [2023-08-30 22:36:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:29,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:30,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:30,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844585618] [2023-08-30 22:36:30,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844585618] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:30,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:30,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 22:36:30,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521024050] [2023-08-30 22:36:30,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:30,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 22:36:30,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:30,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 22:36:30,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 22:36:31,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 473 [2023-08-30 22:36:31,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 223.4) internal successors, (1117), 5 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:31,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:31,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 473 [2023-08-30 22:36:31,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:31,925 INFO L130 PetriNetUnfolder]: 1608/2744 cut-off events. [2023-08-30 22:36:31,925 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-30 22:36:31,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5428 conditions, 2744 events. 1608/2744 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 12803 event pairs, 1244 based on Foata normal form. 0/2392 useless extension candidates. Maximal degree in co-relation 5424. Up to 2518 conditions per place. [2023-08-30 22:36:31,938 INFO L137 encePairwiseOnDemand]: 466/473 looper letters, 57 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2023-08-30 22:36:31,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 292 flow [2023-08-30 22:36:31,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 22:36:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 22:36:31,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1393 transitions. [2023-08-30 22:36:31,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908386187455955 [2023-08-30 22:36:31,942 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1393 transitions. [2023-08-30 22:36:31,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1393 transitions. [2023-08-30 22:36:31,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:31,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1393 transitions. [2023-08-30 22:36:31,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 232.16666666666666) internal successors, (1393), 6 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:31,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:31,952 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:31,952 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 134 flow. Second operand 6 states and 1393 transitions. [2023-08-30 22:36:31,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 292 flow [2023-08-30 22:36:31,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 22:36:31,956 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 186 flow [2023-08-30 22:36:31,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2023-08-30 22:36:31,957 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 6 predicate places. [2023-08-30 22:36:31,957 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 186 flow [2023-08-30 22:36:31,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 223.4) internal successors, (1117), 5 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:31,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:31,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:31,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 22:36:31,959 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:31,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:31,959 INFO L85 PathProgramCache]: Analyzing trace with hash -588975779, now seen corresponding path program 1 times [2023-08-30 22:36:31,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:31,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792332580] [2023-08-30 22:36:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:31,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:32,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:32,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792332580] [2023-08-30 22:36:32,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792332580] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:32,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:32,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 22:36:32,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014870889] [2023-08-30 22:36:32,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:32,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 22:36:32,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:32,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 22:36:32,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 22:36:32,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 473 [2023-08-30 22:36:32,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 220.16666666666666) internal successors, (1321), 6 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:32,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:32,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 473 [2023-08-30 22:36:32,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:33,065 INFO L130 PetriNetUnfolder]: 1839/3131 cut-off events. [2023-08-30 22:36:33,066 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-08-30 22:36:33,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6392 conditions, 3131 events. 1839/3131 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 15144 event pairs, 302 based on Foata normal form. 17/2811 useless extension candidates. Maximal degree in co-relation 6384. Up to 2548 conditions per place. [2023-08-30 22:36:33,081 INFO L137 encePairwiseOnDemand]: 465/473 looper letters, 98 selfloop transitions, 17 changer transitions 0/123 dead transitions. [2023-08-30 22:36:33,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 123 transitions, 540 flow [2023-08-30 22:36:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 22:36:33,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 22:36:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1420 transitions. [2023-08-30 22:36:33,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5003523608174771 [2023-08-30 22:36:33,091 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1420 transitions. [2023-08-30 22:36:33,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1420 transitions. [2023-08-30 22:36:33,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:33,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1420 transitions. [2023-08-30 22:36:33,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 236.66666666666666) internal successors, (1420), 6 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:33,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:33,102 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:33,102 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 186 flow. Second operand 6 states and 1420 transitions. [2023-08-30 22:36:33,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 123 transitions, 540 flow [2023-08-30 22:36:33,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 123 transitions, 540 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 22:36:33,107 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 278 flow [2023-08-30 22:36:33,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2023-08-30 22:36:33,108 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 14 predicate places. [2023-08-30 22:36:33,108 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 278 flow [2023-08-30 22:36:33,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.16666666666666) internal successors, (1321), 6 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:33,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:33,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:33,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 22:36:33,110 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:33,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:33,110 INFO L85 PathProgramCache]: Analyzing trace with hash -507576723, now seen corresponding path program 2 times [2023-08-30 22:36:33,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:33,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221479275] [2023-08-30 22:36:33,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:33,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:33,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:33,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:33,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221479275] [2023-08-30 22:36:33,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221479275] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:33,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:33,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 22:36:33,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158626220] [2023-08-30 22:36:33,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:33,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 22:36:33,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:33,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 22:36:33,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 22:36:34,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 473 [2023-08-30 22:36:34,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 221.16666666666666) internal successors, (1327), 6 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:34,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:34,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 473 [2023-08-30 22:36:34,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:34,777 INFO L130 PetriNetUnfolder]: 1970/3340 cut-off events. [2023-08-30 22:36:34,778 INFO L131 PetriNetUnfolder]: For 690/690 co-relation queries the response was YES. [2023-08-30 22:36:34,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7299 conditions, 3340 events. 1970/3340 cut-off events. For 690/690 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16276 event pairs, 827 based on Foata normal form. 17/3010 useless extension candidates. Maximal degree in co-relation 7287. Up to 2536 conditions per place. [2023-08-30 22:36:34,796 INFO L137 encePairwiseOnDemand]: 465/473 looper letters, 100 selfloop transitions, 20 changer transitions 0/128 dead transitions. [2023-08-30 22:36:34,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 128 transitions, 639 flow [2023-08-30 22:36:34,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 22:36:34,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 22:36:34,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1425 transitions. [2023-08-30 22:36:34,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021141649048626 [2023-08-30 22:36:34,801 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1425 transitions. [2023-08-30 22:36:34,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1425 transitions. [2023-08-30 22:36:34,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:34,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1425 transitions. [2023-08-30 22:36:34,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.5) internal successors, (1425), 6 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:34,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:34,811 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:34,811 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 278 flow. Second operand 6 states and 1425 transitions. [2023-08-30 22:36:34,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 128 transitions, 639 flow [2023-08-30 22:36:34,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 128 transitions, 623 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-30 22:36:34,819 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 352 flow [2023-08-30 22:36:34,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2023-08-30 22:36:34,820 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 21 predicate places. [2023-08-30 22:36:34,820 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 352 flow [2023-08-30 22:36:34,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 221.16666666666666) internal successors, (1327), 6 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:34,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:34,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:34,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 22:36:34,821 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:34,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:34,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1152821177, now seen corresponding path program 3 times [2023-08-30 22:36:34,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:34,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077076047] [2023-08-30 22:36:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:34,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:35,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:35,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077076047] [2023-08-30 22:36:35,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077076047] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:35,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:35,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 22:36:35,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584508737] [2023-08-30 22:36:35,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:35,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 22:36:35,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:35,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 22:36:35,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-30 22:36:36,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 473 [2023-08-30 22:36:36,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 352 flow. Second operand has 9 states, 9 states have (on average 207.44444444444446) internal successors, (1867), 9 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:36,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:36,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 473 [2023-08-30 22:36:36,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:38,020 INFO L130 PetriNetUnfolder]: 2695/4560 cut-off events. [2023-08-30 22:36:38,020 INFO L131 PetriNetUnfolder]: For 1111/1111 co-relation queries the response was YES. [2023-08-30 22:36:38,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10103 conditions, 4560 events. 2695/4560 cut-off events. For 1111/1111 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 23995 event pairs, 572 based on Foata normal form. 0/4080 useless extension candidates. Maximal degree in co-relation 10088. Up to 2481 conditions per place. [2023-08-30 22:36:38,051 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 156 selfloop transitions, 26 changer transitions 3/193 dead transitions. [2023-08-30 22:36:38,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 193 transitions, 982 flow [2023-08-30 22:36:38,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 22:36:38,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 22:36:38,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2027 transitions. [2023-08-30 22:36:38,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47615691801738314 [2023-08-30 22:36:38,058 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2027 transitions. [2023-08-30 22:36:38,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2027 transitions. [2023-08-30 22:36:38,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:38,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2027 transitions. [2023-08-30 22:36:38,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 225.22222222222223) internal successors, (2027), 9 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:38,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:38,071 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:38,071 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 352 flow. Second operand 9 states and 2027 transitions. [2023-08-30 22:36:38,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 193 transitions, 982 flow [2023-08-30 22:36:38,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 193 transitions, 972 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-30 22:36:38,081 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 467 flow [2023-08-30 22:36:38,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=467, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2023-08-30 22:36:38,084 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 33 predicate places. [2023-08-30 22:36:38,085 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 467 flow [2023-08-30 22:36:38,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 207.44444444444446) internal successors, (1867), 9 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:38,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:38,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:38,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 22:36:38,086 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:38,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:38,087 INFO L85 PathProgramCache]: Analyzing trace with hash 454650260, now seen corresponding path program 1 times [2023-08-30 22:36:38,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:38,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741770765] [2023-08-30 22:36:38,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:38,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:38,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:38,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741770765] [2023-08-30 22:36:38,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741770765] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:38,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:38,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 22:36:38,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710436483] [2023-08-30 22:36:38,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:38,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 22:36:38,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:38,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 22:36:38,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-30 22:36:39,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 473 [2023-08-30 22:36:39,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 467 flow. Second operand has 9 states, 9 states have (on average 206.44444444444446) internal successors, (1858), 9 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:39,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:39,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 473 [2023-08-30 22:36:39,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:39,874 INFO L130 PetriNetUnfolder]: 2672/4539 cut-off events. [2023-08-30 22:36:39,874 INFO L131 PetriNetUnfolder]: For 2260/2260 co-relation queries the response was YES. [2023-08-30 22:36:39,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10694 conditions, 4539 events. 2672/4539 cut-off events. For 2260/2260 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 23899 event pairs, 1905 based on Foata normal form. 0/4050 useless extension candidates. Maximal degree in co-relation 10674. Up to 4236 conditions per place. [2023-08-30 22:36:39,900 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 88 selfloop transitions, 17 changer transitions 0/113 dead transitions. [2023-08-30 22:36:39,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 113 transitions, 739 flow [2023-08-30 22:36:39,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 22:36:39,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 22:36:39,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1926 transitions. [2023-08-30 22:36:39,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452431289640592 [2023-08-30 22:36:39,906 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1926 transitions. [2023-08-30 22:36:39,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1926 transitions. [2023-08-30 22:36:39,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:39,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1926 transitions. [2023-08-30 22:36:39,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 214.0) internal successors, (1926), 9 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:39,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:39,918 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:39,918 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 467 flow. Second operand 9 states and 1926 transitions. [2023-08-30 22:36:39,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 113 transitions, 739 flow [2023-08-30 22:36:39,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 113 transitions, 706 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-30 22:36:39,927 INFO L231 Difference]: Finished difference. Result has 105 places, 103 transitions, 538 flow [2023-08-30 22:36:39,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=538, PETRI_PLACES=105, PETRI_TRANSITIONS=103} [2023-08-30 22:36:39,928 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 42 predicate places. [2023-08-30 22:36:39,928 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 103 transitions, 538 flow [2023-08-30 22:36:39,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 206.44444444444446) internal successors, (1858), 9 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:39,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:39,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:39,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 22:36:39,929 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:39,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:39,930 INFO L85 PathProgramCache]: Analyzing trace with hash -535562244, now seen corresponding path program 1 times [2023-08-30 22:36:39,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:39,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533745446] [2023-08-30 22:36:39,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:39,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:39,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:39,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533745446] [2023-08-30 22:36:39,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533745446] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:39,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:39,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 22:36:39,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863284425] [2023-08-30 22:36:39,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:39,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 22:36:39,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:39,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 22:36:39,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 22:36:40,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 473 [2023-08-30 22:36:40,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 103 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:40,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:40,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 473 [2023-08-30 22:36:40,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:40,271 INFO L130 PetriNetUnfolder]: 1644/2836 cut-off events. [2023-08-30 22:36:40,271 INFO L131 PetriNetUnfolder]: For 615/632 co-relation queries the response was YES. [2023-08-30 22:36:40,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6342 conditions, 2836 events. 1644/2836 cut-off events. For 615/632 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12148 event pairs, 875 based on Foata normal form. 127/2567 useless extension candidates. Maximal degree in co-relation 6317. Up to 1353 conditions per place. [2023-08-30 22:36:40,289 INFO L137 encePairwiseOnDemand]: 469/473 looper letters, 96 selfloop transitions, 3 changer transitions 1/113 dead transitions. [2023-08-30 22:36:40,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 113 transitions, 694 flow [2023-08-30 22:36:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 22:36:40,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 22:36:40,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 800 transitions. [2023-08-30 22:36:40,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637773079633545 [2023-08-30 22:36:40,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 800 transitions. [2023-08-30 22:36:40,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 800 transitions. [2023-08-30 22:36:40,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:40,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 800 transitions. [2023-08-30 22:36:40,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:40,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:40,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:40,297 INFO L175 Difference]: Start difference. First operand has 105 places, 103 transitions, 538 flow. Second operand 3 states and 800 transitions. [2023-08-30 22:36:40,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 113 transitions, 694 flow [2023-08-30 22:36:40,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 113 transitions, 614 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-08-30 22:36:40,302 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 374 flow [2023-08-30 22:36:40,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2023-08-30 22:36:40,303 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 33 predicate places. [2023-08-30 22:36:40,303 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 374 flow [2023-08-30 22:36:40,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:40,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:40,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:40,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 22:36:40,304 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:40,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:40,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1966953527, now seen corresponding path program 1 times [2023-08-30 22:36:40,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:40,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313997733] [2023-08-30 22:36:40,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:40,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:41,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:41,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313997733] [2023-08-30 22:36:41,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313997733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:41,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:41,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 22:36:41,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326881005] [2023-08-30 22:36:41,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:41,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 22:36:41,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:41,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 22:36:41,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-08-30 22:36:42,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 473 [2023-08-30 22:36:42,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 374 flow. Second operand has 10 states, 10 states have (on average 203.4) internal successors, (2034), 10 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) [2023-08-30 22:36:42,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:42,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 473 [2023-08-30 22:36:42,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:43,802 INFO L130 PetriNetUnfolder]: 1880/3301 cut-off events. [2023-08-30 22:36:43,802 INFO L131 PetriNetUnfolder]: For 407/407 co-relation queries the response was YES. [2023-08-30 22:36:43,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7302 conditions, 3301 events. 1880/3301 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 15059 event pairs, 1161 based on Foata normal form. 0/2864 useless extension candidates. Maximal degree in co-relation 7281. Up to 2482 conditions per place. [2023-08-30 22:36:43,822 INFO L137 encePairwiseOnDemand]: 461/473 looper letters, 107 selfloop transitions, 28 changer transitions 11/155 dead transitions. [2023-08-30 22:36:43,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 155 transitions, 842 flow [2023-08-30 22:36:43,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 22:36:43,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 22:36:43,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2149 transitions. [2023-08-30 22:36:43,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4543340380549683 [2023-08-30 22:36:43,828 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2149 transitions. [2023-08-30 22:36:43,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2149 transitions. [2023-08-30 22:36:43,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:43,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2149 transitions. [2023-08-30 22:36:43,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 214.9) internal successors, (2149), 10 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:43,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 473.0) internal successors, (5203), 11 states have internal predecessors, (5203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:43,854 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 473.0) internal successors, (5203), 11 states have internal predecessors, (5203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:43,854 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 374 flow. Second operand 10 states and 2149 transitions. [2023-08-30 22:36:43,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 155 transitions, 842 flow [2023-08-30 22:36:43,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 155 transitions, 839 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 22:36:43,860 INFO L231 Difference]: Finished difference. Result has 110 places, 96 transitions, 523 flow [2023-08-30 22:36:43,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=523, PETRI_PLACES=110, PETRI_TRANSITIONS=96} [2023-08-30 22:36:43,862 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 47 predicate places. [2023-08-30 22:36:43,864 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 96 transitions, 523 flow [2023-08-30 22:36:43,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 203.4) internal successors, (2034), 10 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) [2023-08-30 22:36:43,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:43,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:43,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 22:36:43,865 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:43,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:43,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1279417377, now seen corresponding path program 2 times [2023-08-30 22:36:43,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:43,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113116168] [2023-08-30 22:36:43,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:43,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:44,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:44,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113116168] [2023-08-30 22:36:44,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113116168] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:44,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:44,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 22:36:44,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969547546] [2023-08-30 22:36:44,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:44,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 22:36:44,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:44,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 22:36:44,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-30 22:36:45,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 473 [2023-08-30 22:36:45,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 96 transitions, 523 flow. Second operand has 10 states, 10 states have (on average 203.4) internal successors, (2034), 10 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) [2023-08-30 22:36:45,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:45,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 473 [2023-08-30 22:36:45,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:45,976 INFO L130 PetriNetUnfolder]: 1856/3274 cut-off events. [2023-08-30 22:36:45,976 INFO L131 PetriNetUnfolder]: For 1040/1040 co-relation queries the response was YES. [2023-08-30 22:36:45,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7587 conditions, 3274 events. 1856/3274 cut-off events. For 1040/1040 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14936 event pairs, 544 based on Foata normal form. 9/2844 useless extension candidates. Maximal degree in co-relation 7560. Up to 2012 conditions per place. [2023-08-30 22:36:45,990 INFO L137 encePairwiseOnDemand]: 461/473 looper letters, 96 selfloop transitions, 30 changer transitions 10/145 dead transitions. [2023-08-30 22:36:45,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 145 transitions, 912 flow [2023-08-30 22:36:45,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 22:36:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 22:36:45,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1934 transitions. [2023-08-30 22:36:45,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45431054733380316 [2023-08-30 22:36:45,997 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1934 transitions. [2023-08-30 22:36:45,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1934 transitions. [2023-08-30 22:36:45,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:45,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1934 transitions. [2023-08-30 22:36:46,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 214.88888888888889) internal successors, (1934), 9 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:46,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:46,007 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:46,008 INFO L175 Difference]: Start difference. First operand has 110 places, 96 transitions, 523 flow. Second operand 9 states and 1934 transitions. [2023-08-30 22:36:46,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 145 transitions, 912 flow [2023-08-30 22:36:46,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 145 transitions, 853 flow, removed 21 selfloop flow, removed 6 redundant places. [2023-08-30 22:36:46,016 INFO L231 Difference]: Finished difference. Result has 111 places, 94 transitions, 563 flow [2023-08-30 22:36:46,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=563, PETRI_PLACES=111, PETRI_TRANSITIONS=94} [2023-08-30 22:36:46,018 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 48 predicate places. [2023-08-30 22:36:46,018 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 94 transitions, 563 flow [2023-08-30 22:36:46,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 203.4) internal successors, (2034), 10 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) [2023-08-30 22:36:46,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:46,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:46,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 22:36:46,020 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:46,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:46,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1215939803, now seen corresponding path program 3 times [2023-08-30 22:36:46,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:46,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811142283] [2023-08-30 22:36:46,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:46,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:46,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:46,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811142283] [2023-08-30 22:36:46,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811142283] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:46,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:46,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 22:36:46,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105545194] [2023-08-30 22:36:46,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:46,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 22:36:46,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:46,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 22:36:46,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-08-30 22:36:47,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 473 [2023-08-30 22:36:47,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 94 transitions, 563 flow. Second operand has 10 states, 10 states have (on average 203.4) internal successors, (2034), 10 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) [2023-08-30 22:36:47,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:47,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 473 [2023-08-30 22:36:47,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:48,692 INFO L130 PetriNetUnfolder]: 1990/3521 cut-off events. [2023-08-30 22:36:48,692 INFO L131 PetriNetUnfolder]: For 1164/1164 co-relation queries the response was YES. [2023-08-30 22:36:48,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8234 conditions, 3521 events. 1990/3521 cut-off events. For 1164/1164 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 16710 event pairs, 469 based on Foata normal form. 0/3049 useless extension candidates. Maximal degree in co-relation 8207. Up to 1753 conditions per place. [2023-08-30 22:36:48,717 INFO L137 encePairwiseOnDemand]: 461/473 looper letters, 103 selfloop transitions, 37 changer transitions 13/162 dead transitions. [2023-08-30 22:36:48,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 162 transitions, 1037 flow [2023-08-30 22:36:48,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 22:36:48,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 22:36:48,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2150 transitions. [2023-08-30 22:36:48,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-08-30 22:36:48,723 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2150 transitions. [2023-08-30 22:36:48,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2150 transitions. [2023-08-30 22:36:48,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:48,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2150 transitions. [2023-08-30 22:36:48,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 215.0) internal successors, (2150), 10 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:48,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 473.0) internal successors, (5203), 11 states have internal predecessors, (5203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:48,734 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 473.0) internal successors, (5203), 11 states have internal predecessors, (5203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:48,734 INFO L175 Difference]: Start difference. First operand has 111 places, 94 transitions, 563 flow. Second operand 10 states and 2150 transitions. [2023-08-30 22:36:48,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 162 transitions, 1037 flow [2023-08-30 22:36:48,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 162 transitions, 990 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-30 22:36:48,744 INFO L231 Difference]: Finished difference. Result has 117 places, 97 transitions, 642 flow [2023-08-30 22:36:48,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=642, PETRI_PLACES=117, PETRI_TRANSITIONS=97} [2023-08-30 22:36:48,745 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 54 predicate places. [2023-08-30 22:36:48,745 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 97 transitions, 642 flow [2023-08-30 22:36:48,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 203.4) internal successors, (2034), 10 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) [2023-08-30 22:36:48,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:48,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:48,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 22:36:48,747 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:48,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:48,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1213258613, now seen corresponding path program 4 times [2023-08-30 22:36:48,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:48,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158288800] [2023-08-30 22:36:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:48,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:49,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:49,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158288800] [2023-08-30 22:36:49,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158288800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:49,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:49,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 22:36:49,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507633643] [2023-08-30 22:36:49,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:49,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 22:36:49,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:49,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 22:36:49,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-08-30 22:36:50,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 473 [2023-08-30 22:36:50,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 97 transitions, 642 flow. Second operand has 10 states, 10 states have (on average 203.4) internal successors, (2034), 10 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) [2023-08-30 22:36:50,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:50,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 473 [2023-08-30 22:36:50,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:50,742 INFO L130 PetriNetUnfolder]: 2003/3536 cut-off events. [2023-08-30 22:36:50,742 INFO L131 PetriNetUnfolder]: For 1403/1403 co-relation queries the response was YES. [2023-08-30 22:36:50,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8498 conditions, 3536 events. 2003/3536 cut-off events. For 1403/1403 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 16612 event pairs, 526 based on Foata normal form. 0/3057 useless extension candidates. Maximal degree in co-relation 8469. Up to 1753 conditions per place. [2023-08-30 22:36:50,760 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 95 selfloop transitions, 35 changer transitions 9/148 dead transitions. [2023-08-30 22:36:50,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 148 transitions, 1041 flow [2023-08-30 22:36:50,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 22:36:50,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 22:36:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1930 transitions. [2023-08-30 22:36:50,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45337091848719757 [2023-08-30 22:36:50,765 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1930 transitions. [2023-08-30 22:36:50,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1930 transitions. [2023-08-30 22:36:50,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:50,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1930 transitions. [2023-08-30 22:36:50,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 214.44444444444446) internal successors, (1930), 9 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:50,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:50,775 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:50,775 INFO L175 Difference]: Start difference. First operand has 117 places, 97 transitions, 642 flow. Second operand 9 states and 1930 transitions. [2023-08-30 22:36:50,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 148 transitions, 1041 flow [2023-08-30 22:36:50,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 148 transitions, 990 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 22:36:50,786 INFO L231 Difference]: Finished difference. Result has 119 places, 98 transitions, 682 flow [2023-08-30 22:36:50,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=682, PETRI_PLACES=119, PETRI_TRANSITIONS=98} [2023-08-30 22:36:50,787 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 56 predicate places. [2023-08-30 22:36:50,787 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 98 transitions, 682 flow [2023-08-30 22:36:50,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 203.4) internal successors, (2034), 10 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) [2023-08-30 22:36:50,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:50,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:50,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 22:36:50,788 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:50,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:50,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1209251243, now seen corresponding path program 5 times [2023-08-30 22:36:50,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:50,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072978030] [2023-08-30 22:36:50,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:50,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:51,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:51,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072978030] [2023-08-30 22:36:51,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072978030] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:51,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:51,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 22:36:51,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343136544] [2023-08-30 22:36:51,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:51,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 22:36:51,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:51,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 22:36:51,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-30 22:36:52,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 473 [2023-08-30 22:36:52,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 98 transitions, 682 flow. Second operand has 10 states, 10 states have (on average 205.4) internal successors, (2054), 10 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) [2023-08-30 22:36:52,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:52,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 473 [2023-08-30 22:36:52,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:52,673 INFO L130 PetriNetUnfolder]: 1990/3505 cut-off events. [2023-08-30 22:36:52,673 INFO L131 PetriNetUnfolder]: For 1594/1594 co-relation queries the response was YES. [2023-08-30 22:36:52,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8548 conditions, 3505 events. 1990/3505 cut-off events. For 1594/1594 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 16354 event pairs, 515 based on Foata normal form. 0/3037 useless extension candidates. Maximal degree in co-relation 8518. Up to 1753 conditions per place. [2023-08-30 22:36:52,692 INFO L137 encePairwiseOnDemand]: 463/473 looper letters, 93 selfloop transitions, 35 changer transitions 10/146 dead transitions. [2023-08-30 22:36:52,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 146 transitions, 1065 flow [2023-08-30 22:36:52,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 22:36:52,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 22:36:52,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1946 transitions. [2023-08-30 22:36:52,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45712943387361993 [2023-08-30 22:36:52,697 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1946 transitions. [2023-08-30 22:36:52,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1946 transitions. [2023-08-30 22:36:52,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:52,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1946 transitions. [2023-08-30 22:36:52,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 216.22222222222223) internal successors, (1946), 9 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:52,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:52,707 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:52,707 INFO L175 Difference]: Start difference. First operand has 119 places, 98 transitions, 682 flow. Second operand 9 states and 1946 transitions. [2023-08-30 22:36:52,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 146 transitions, 1065 flow [2023-08-30 22:36:52,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 146 transitions, 1024 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 22:36:52,719 INFO L231 Difference]: Finished difference. Result has 119 places, 96 transitions, 703 flow [2023-08-30 22:36:52,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=703, PETRI_PLACES=119, PETRI_TRANSITIONS=96} [2023-08-30 22:36:52,720 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 56 predicate places. [2023-08-30 22:36:52,720 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 96 transitions, 703 flow [2023-08-30 22:36:52,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 205.4) internal successors, (2054), 10 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) [2023-08-30 22:36:52,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:52,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:52,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 22:36:52,721 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:52,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:52,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1942684503, now seen corresponding path program 1 times [2023-08-30 22:36:52,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:52,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812007481] [2023-08-30 22:36:52,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:52,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:52,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:52,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812007481] [2023-08-30 22:36:52,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812007481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:52,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:52,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 22:36:52,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433521640] [2023-08-30 22:36:52,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:52,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 22:36:52,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:52,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 22:36:52,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 22:36:52,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 473 [2023-08-30 22:36:52,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 96 transitions, 703 flow. Second operand has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:52,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:52,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 473 [2023-08-30 22:36:52,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:53,048 INFO L130 PetriNetUnfolder]: 1298/2415 cut-off events. [2023-08-30 22:36:53,049 INFO L131 PetriNetUnfolder]: For 1569/1574 co-relation queries the response was YES. [2023-08-30 22:36:53,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6303 conditions, 2415 events. 1298/2415 cut-off events. For 1569/1574 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11433 event pairs, 373 based on Foata normal form. 7/2229 useless extension candidates. Maximal degree in co-relation 6273. Up to 1719 conditions per place. [2023-08-30 22:36:53,062 INFO L137 encePairwiseOnDemand]: 467/473 looper letters, 86 selfloop transitions, 6 changer transitions 1/108 dead transitions. [2023-08-30 22:36:53,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 108 transitions, 931 flow [2023-08-30 22:36:53,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 22:36:53,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 22:36:53,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 775 transitions. [2023-08-30 22:36:53,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461592670894997 [2023-08-30 22:36:53,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 775 transitions. [2023-08-30 22:36:53,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 775 transitions. [2023-08-30 22:36:53,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:53,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 775 transitions. [2023-08-30 22:36:53,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:53,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:53,069 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:53,069 INFO L175 Difference]: Start difference. First operand has 119 places, 96 transitions, 703 flow. Second operand 3 states and 775 transitions. [2023-08-30 22:36:53,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 108 transitions, 931 flow [2023-08-30 22:36:53,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 108 transitions, 859 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-30 22:36:53,079 INFO L231 Difference]: Finished difference. Result has 113 places, 96 transitions, 643 flow [2023-08-30 22:36:53,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=643, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2023-08-30 22:36:53,080 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 50 predicate places. [2023-08-30 22:36:53,081 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 643 flow [2023-08-30 22:36:53,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:53,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:53,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:53,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 22:36:53,082 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:53,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:53,082 INFO L85 PathProgramCache]: Analyzing trace with hash 272642884, now seen corresponding path program 1 times [2023-08-30 22:36:53,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:53,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789792869] [2023-08-30 22:36:53,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:53,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:54,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:54,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:54,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789792869] [2023-08-30 22:36:54,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789792869] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:54,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:54,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 22:36:54,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773819509] [2023-08-30 22:36:54,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:54,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 22:36:54,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:54,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 22:36:54,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 22:36:54,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 473 [2023-08-30 22:36:54,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 643 flow. Second operand has 13 states, 13 states have (on average 211.69230769230768) internal successors, (2752), 13 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:54,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:54,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 473 [2023-08-30 22:36:54,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:55,465 INFO L130 PetriNetUnfolder]: 1301/2438 cut-off events. [2023-08-30 22:36:55,465 INFO L131 PetriNetUnfolder]: For 1316/1318 co-relation queries the response was YES. [2023-08-30 22:36:55,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6350 conditions, 2438 events. 1301/2438 cut-off events. For 1316/1318 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11549 event pairs, 556 based on Foata normal form. 0/2345 useless extension candidates. Maximal degree in co-relation 6320. Up to 1304 conditions per place. [2023-08-30 22:36:55,475 INFO L137 encePairwiseOnDemand]: 461/473 looper letters, 111 selfloop transitions, 31 changer transitions 11/161 dead transitions. [2023-08-30 22:36:55,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 161 transitions, 1130 flow [2023-08-30 22:36:55,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 22:36:55,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 22:36:55,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2425 transitions. [2023-08-30 22:36:55,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46607726311743225 [2023-08-30 22:36:55,482 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2425 transitions. [2023-08-30 22:36:55,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2425 transitions. [2023-08-30 22:36:55,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:55,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2425 transitions. [2023-08-30 22:36:55,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 220.45454545454547) internal successors, (2425), 11 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:55,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 473.0) internal successors, (5676), 12 states have internal predecessors, (5676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:55,494 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 473.0) internal successors, (5676), 12 states have internal predecessors, (5676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:55,494 INFO L175 Difference]: Start difference. First operand has 113 places, 96 transitions, 643 flow. Second operand 11 states and 2425 transitions. [2023-08-30 22:36:55,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 161 transitions, 1130 flow [2023-08-30 22:36:55,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 161 transitions, 1120 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 22:36:55,504 INFO L231 Difference]: Finished difference. Result has 125 places, 103 transitions, 760 flow [2023-08-30 22:36:55,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=760, PETRI_PLACES=125, PETRI_TRANSITIONS=103} [2023-08-30 22:36:55,505 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 62 predicate places. [2023-08-30 22:36:55,505 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 103 transitions, 760 flow [2023-08-30 22:36:55,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 211.69230769230768) internal successors, (2752), 13 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:55,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:55,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:55,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 22:36:55,506 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:55,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:55,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1362103832, now seen corresponding path program 2 times [2023-08-30 22:36:55,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:55,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9475234] [2023-08-30 22:36:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:55,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:37:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:37:04,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:37:04,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9475234] [2023-08-30 22:37:04,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9475234] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:37:04,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:37:04,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-08-30 22:37:04,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552701524] [2023-08-30 22:37:04,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:37:04,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 22:37:04,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:37:04,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 22:37:04,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-08-30 22:37:25,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 473 [2023-08-30 22:37:25,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 103 transitions, 760 flow. Second operand has 18 states, 18 states have (on average 208.94444444444446) internal successors, (3761), 18 states have internal predecessors, (3761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:25,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:37:25,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 473 [2023-08-30 22:37:25,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:37:41,771 INFO L130 PetriNetUnfolder]: 1854/3507 cut-off events. [2023-08-30 22:37:41,772 INFO L131 PetriNetUnfolder]: For 1581/1581 co-relation queries the response was YES. [2023-08-30 22:37:41,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8847 conditions, 3507 events. 1854/3507 cut-off events. For 1581/1581 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 18189 event pairs, 484 based on Foata normal form. 0/3415 useless extension candidates. Maximal degree in co-relation 8813. Up to 879 conditions per place. [2023-08-30 22:37:41,787 INFO L137 encePairwiseOnDemand]: 456/473 looper letters, 170 selfloop transitions, 48 changer transitions 14/240 dead transitions. [2023-08-30 22:37:41,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 240 transitions, 1572 flow [2023-08-30 22:37:41,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 22:37:41,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 22:37:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3927 transitions. [2023-08-30 22:37:41,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2023-08-30 22:37:41,793 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3927 transitions. [2023-08-30 22:37:41,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3927 transitions. [2023-08-30 22:37:41,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:37:41,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3927 transitions. [2023-08-30 22:37:41,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 218.16666666666666) internal successors, (3927), 18 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:41,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 473.0) internal successors, (8987), 19 states have internal predecessors, (8987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:41,809 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 473.0) internal successors, (8987), 19 states have internal predecessors, (8987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:41,809 INFO L175 Difference]: Start difference. First operand has 125 places, 103 transitions, 760 flow. Second operand 18 states and 3927 transitions. [2023-08-30 22:37:41,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 240 transitions, 1572 flow [2023-08-30 22:37:41,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 240 transitions, 1533 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-30 22:37:41,822 INFO L231 Difference]: Finished difference. Result has 143 places, 114 transitions, 907 flow [2023-08-30 22:37:41,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=907, PETRI_PLACES=143, PETRI_TRANSITIONS=114} [2023-08-30 22:37:41,823 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 80 predicate places. [2023-08-30 22:37:41,823 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 114 transitions, 907 flow [2023-08-30 22:37:41,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 208.94444444444446) internal successors, (3761), 18 states have internal predecessors, (3761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:41,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:37:41,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:37:41,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 22:37:41,824 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:37:41,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:37:41,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1629082922, now seen corresponding path program 3 times [2023-08-30 22:37:41,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:37:41,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178726930] [2023-08-30 22:37:41,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:37:41,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:37:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:37:43,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:37:43,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:37:43,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178726930] [2023-08-30 22:37:43,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178726930] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:37:43,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:37:43,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-08-30 22:37:43,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646232935] [2023-08-30 22:37:43,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:37:43,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 22:37:43,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:37:43,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 22:37:43,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-08-30 22:37:45,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 473 [2023-08-30 22:37:45,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 114 transitions, 907 flow. Second operand has 17 states, 17 states have (on average 209.05882352941177) internal successors, (3554), 17 states have internal predecessors, (3554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:45,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:37:45,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 473 [2023-08-30 22:37:45,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:37:46,676 INFO L130 PetriNetUnfolder]: 2209/4184 cut-off events. [2023-08-30 22:37:46,677 INFO L131 PetriNetUnfolder]: For 2368/2368 co-relation queries the response was YES. [2023-08-30 22:37:46,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10953 conditions, 4184 events. 2209/4184 cut-off events. For 2368/2368 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 22081 event pairs, 331 based on Foata normal form. 8/4089 useless extension candidates. Maximal degree in co-relation 10912. Up to 1638 conditions per place. [2023-08-30 22:37:46,697 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 152 selfloop transitions, 46 changer transitions 14/220 dead transitions. [2023-08-30 22:37:46,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 220 transitions, 1630 flow [2023-08-30 22:37:46,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 22:37:46,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 22:37:46,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3270 transitions. [2023-08-30 22:37:46,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608879492600423 [2023-08-30 22:37:46,701 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3270 transitions. [2023-08-30 22:37:46,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3270 transitions. [2023-08-30 22:37:46,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:37:46,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3270 transitions. [2023-08-30 22:37:46,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 218.0) internal successors, (3270), 15 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:46,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 473.0) internal successors, (7568), 16 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:46,712 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 473.0) internal successors, (7568), 16 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:46,712 INFO L175 Difference]: Start difference. First operand has 143 places, 114 transitions, 907 flow. Second operand 15 states and 3270 transitions. [2023-08-30 22:37:46,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 220 transitions, 1630 flow [2023-08-30 22:37:46,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 220 transitions, 1526 flow, removed 8 selfloop flow, removed 11 redundant places. [2023-08-30 22:37:46,729 INFO L231 Difference]: Finished difference. Result has 150 places, 124 transitions, 1000 flow [2023-08-30 22:37:46,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1000, PETRI_PLACES=150, PETRI_TRANSITIONS=124} [2023-08-30 22:37:46,730 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 87 predicate places. [2023-08-30 22:37:46,730 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 124 transitions, 1000 flow [2023-08-30 22:37:46,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 209.05882352941177) internal successors, (3554), 17 states have internal predecessors, (3554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:46,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:37:46,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:37:46,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 22:37:46,732 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:37:46,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:37:46,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1056373008, now seen corresponding path program 1 times [2023-08-30 22:37:46,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:37:46,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822898906] [2023-08-30 22:37:46,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:37:46,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:37:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:37:47,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:37:47,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:37:47,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822898906] [2023-08-30 22:37:47,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822898906] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:37:47,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:37:47,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 22:37:47,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933510174] [2023-08-30 22:37:47,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:37:47,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 22:37:47,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:37:47,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 22:37:47,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 22:37:48,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 473 [2023-08-30 22:37:48,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 124 transitions, 1000 flow. Second operand has 13 states, 13 states have (on average 211.76923076923077) internal successors, (2753), 13 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:48,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:37:48,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 473 [2023-08-30 22:37:48,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:37:49,042 INFO L130 PetriNetUnfolder]: 2479/4685 cut-off events. [2023-08-30 22:37:49,042 INFO L131 PetriNetUnfolder]: For 3306/3308 co-relation queries the response was YES. [2023-08-30 22:37:49,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12502 conditions, 4685 events. 2479/4685 cut-off events. For 3306/3308 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 25588 event pairs, 473 based on Foata normal form. 18/4587 useless extension candidates. Maximal degree in co-relation 12458. Up to 2385 conditions per place. [2023-08-30 22:37:49,065 INFO L137 encePairwiseOnDemand]: 458/473 looper letters, 145 selfloop transitions, 41 changer transitions 10/204 dead transitions. [2023-08-30 22:37:49,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 204 transitions, 1642 flow [2023-08-30 22:37:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 22:37:49,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 22:37:49,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2649 transitions. [2023-08-30 22:37:49,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4667019027484144 [2023-08-30 22:37:49,069 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2649 transitions. [2023-08-30 22:37:49,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2649 transitions. [2023-08-30 22:37:49,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:37:49,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2649 transitions. [2023-08-30 22:37:49,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 220.75) internal successors, (2649), 12 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:49,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 473.0) internal successors, (6149), 13 states have internal predecessors, (6149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:49,077 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 473.0) internal successors, (6149), 13 states have internal predecessors, (6149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:49,077 INFO L175 Difference]: Start difference. First operand has 150 places, 124 transitions, 1000 flow. Second operand 12 states and 2649 transitions. [2023-08-30 22:37:49,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 204 transitions, 1642 flow [2023-08-30 22:37:49,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 204 transitions, 1559 flow, removed 5 selfloop flow, removed 10 redundant places. [2023-08-30 22:37:49,098 INFO L231 Difference]: Finished difference. Result has 154 places, 133 transitions, 1113 flow [2023-08-30 22:37:49,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1113, PETRI_PLACES=154, PETRI_TRANSITIONS=133} [2023-08-30 22:37:49,099 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 91 predicate places. [2023-08-30 22:37:49,099 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 133 transitions, 1113 flow [2023-08-30 22:37:49,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 211.76923076923077) internal successors, (2753), 13 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:49,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:37:49,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:37:49,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 22:37:49,101 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:37:49,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:37:49,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1241534900, now seen corresponding path program 2 times [2023-08-30 22:37:49,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:37:49,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081322579] [2023-08-30 22:37:49,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:37:49,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:37:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:37:50,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:37:50,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:37:50,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081322579] [2023-08-30 22:37:50,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081322579] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:37:50,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:37:50,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 22:37:50,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842224046] [2023-08-30 22:37:50,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:37:50,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 22:37:50,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:37:50,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 22:37:50,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-08-30 22:37:50,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 473 [2023-08-30 22:37:50,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 133 transitions, 1113 flow. Second operand has 13 states, 13 states have (on average 211.76923076923077) internal successors, (2753), 13 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:50,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:37:50,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 473 [2023-08-30 22:37:50,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:37:51,436 INFO L130 PetriNetUnfolder]: 1622/3067 cut-off events. [2023-08-30 22:37:51,436 INFO L131 PetriNetUnfolder]: For 3514/3514 co-relation queries the response was YES. [2023-08-30 22:37:51,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8824 conditions, 3067 events. 1622/3067 cut-off events. For 3514/3514 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 15072 event pairs, 345 based on Foata normal form. 21/3013 useless extension candidates. Maximal degree in co-relation 8777. Up to 1151 conditions per place. [2023-08-30 22:37:51,452 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 120 selfloop transitions, 34 changer transitions 11/173 dead transitions. [2023-08-30 22:37:51,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 173 transitions, 1444 flow [2023-08-30 22:37:51,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 22:37:51,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 22:37:51,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2421 transitions. [2023-08-30 22:37:51,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653084758793004 [2023-08-30 22:37:51,455 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2421 transitions. [2023-08-30 22:37:51,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2421 transitions. [2023-08-30 22:37:51,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:37:51,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2421 transitions. [2023-08-30 22:37:51,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 220.0909090909091) internal successors, (2421), 11 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:51,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 473.0) internal successors, (5676), 12 states have internal predecessors, (5676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:51,462 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 473.0) internal successors, (5676), 12 states have internal predecessors, (5676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:51,462 INFO L175 Difference]: Start difference. First operand has 154 places, 133 transitions, 1113 flow. Second operand 11 states and 2421 transitions. [2023-08-30 22:37:51,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 173 transitions, 1444 flow [2023-08-30 22:37:51,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 173 transitions, 1344 flow, removed 14 selfloop flow, removed 14 redundant places. [2023-08-30 22:37:51,480 INFO L231 Difference]: Finished difference. Result has 145 places, 116 transitions, 944 flow [2023-08-30 22:37:51,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=944, PETRI_PLACES=145, PETRI_TRANSITIONS=116} [2023-08-30 22:37:51,481 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 82 predicate places. [2023-08-30 22:37:51,481 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 116 transitions, 944 flow [2023-08-30 22:37:51,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 211.76923076923077) internal successors, (2753), 13 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:51,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:37:51,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:37:51,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 22:37:51,482 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:37:51,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:37:51,482 INFO L85 PathProgramCache]: Analyzing trace with hash -540729123, now seen corresponding path program 1 times [2023-08-30 22:37:51,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:37:51,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236823350] [2023-08-30 22:37:51,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:37:51,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:37:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:37:52,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:37:52,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:37:52,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236823350] [2023-08-30 22:37:52,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236823350] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:37:52,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:37:52,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-30 22:37:52,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426707234] [2023-08-30 22:37:52,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:37:52,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 22:37:52,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:37:52,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 22:37:52,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-08-30 22:37:53,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 473 [2023-08-30 22:37:53,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 116 transitions, 944 flow. Second operand has 16 states, 16 states have (on average 209.25) internal successors, (3348), 16 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:53,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:37:53,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 473 [2023-08-30 22:37:53,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:37:54,558 INFO L130 PetriNetUnfolder]: 1788/3388 cut-off events. [2023-08-30 22:37:54,558 INFO L131 PetriNetUnfolder]: For 3077/3077 co-relation queries the response was YES. [2023-08-30 22:37:54,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9340 conditions, 3388 events. 1788/3388 cut-off events. For 3077/3077 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 16770 event pairs, 215 based on Foata normal form. 8/3312 useless extension candidates. Maximal degree in co-relation 9299. Up to 816 conditions per place. [2023-08-30 22:37:54,572 INFO L137 encePairwiseOnDemand]: 460/473 looper letters, 140 selfloop transitions, 42 changer transitions 12/202 dead transitions. [2023-08-30 22:37:54,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 202 transitions, 1544 flow [2023-08-30 22:37:54,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 22:37:54,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 22:37:54,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2843 transitions. [2023-08-30 22:37:54,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623516018864856 [2023-08-30 22:37:54,576 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2843 transitions. [2023-08-30 22:37:54,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2843 transitions. [2023-08-30 22:37:54,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:37:54,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2843 transitions. [2023-08-30 22:37:54,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 218.69230769230768) internal successors, (2843), 13 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:54,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:54,584 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:54,584 INFO L175 Difference]: Start difference. First operand has 145 places, 116 transitions, 944 flow. Second operand 13 states and 2843 transitions. [2023-08-30 22:37:54,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 202 transitions, 1544 flow [2023-08-30 22:37:54,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 202 transitions, 1476 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-08-30 22:37:54,600 INFO L231 Difference]: Finished difference. Result has 149 places, 119 transitions, 994 flow [2023-08-30 22:37:54,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=994, PETRI_PLACES=149, PETRI_TRANSITIONS=119} [2023-08-30 22:37:54,601 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 86 predicate places. [2023-08-30 22:37:54,601 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 119 transitions, 994 flow [2023-08-30 22:37:54,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 209.25) internal successors, (3348), 16 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:54,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:37:54,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:37:54,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 22:37:54,603 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:37:54,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:37:54,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1142379959, now seen corresponding path program 1 times [2023-08-30 22:37:54,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:37:54,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967633076] [2023-08-30 22:37:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:37:54,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:37:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15