./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/queue.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.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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --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 22:36:18,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 22:36:18,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 22:36:18,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 22:36:18,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 22:36:18,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 22:36:18,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 22:36:18,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 22:36:18,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 22:36:18,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 22:36:18,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 22:36:18,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 22:36:18,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 22:36:18,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 22:36:18,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 22:36:18,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 22:36:18,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 22:36:18,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 22:36:18,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 22:36:18,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 22:36:18,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 22:36:18,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 22:36:18,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 22:36:18,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 22:36:18,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 22:36:18,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 22:36:18,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 22:36:18,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 22:36:18,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 22:36:18,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 22:36:18,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 22:36:18,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 22:36:18,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 22:36:18,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 22:36:18,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 22:36:18,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 22:36:18,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 22:36:18,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 22:36:18,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 22:36:18,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 22:36:18,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 22:36:18,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 22:36:18,937 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 22:36:18,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 22:36:18,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 22:36:18,938 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 22:36:18,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 22:36:18,939 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 22:36:18,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 22:36:18,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 22:36:18,940 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 22:36:18,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 22:36:18,941 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 22:36:18,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 22:36:18,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 22:36:18,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 22:36:18,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 22:36:18,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 22:36:18,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 22:36:18,943 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 22:36:18,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 22:36:18,943 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 22:36:18,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 22:36:18,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 22:36:18,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 22:36:18,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 22:36:18,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:36:18,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 22:36:18,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 22:36:18,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 22:36:18,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 22:36:18,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 22:36:18,945 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 22:36:18,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 22:36:18,946 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 22:36:18,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 22:36:18,946 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 22:36:18,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 22:36:19,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 22:36:19,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 22:36:19,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 22:36:19,227 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 22:36:19,227 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 22:36:19,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue.i [2023-08-30 22:36:20,345 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 22:36:20,603 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 22:36:20,604 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i [2023-08-30 22:36:20,626 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d05231407/02aecf254f164a1ca84e013fa2542f70/FLAG36437ee1b [2023-08-30 22:36:20,641 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d05231407/02aecf254f164a1ca84e013fa2542f70 [2023-08-30 22:36:20,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 22:36:20,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 22:36:20,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 22:36:20,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 22:36:20,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 22:36:20,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:36:20" (1/1) ... [2023-08-30 22:36:20,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cdb577a 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 22:36:20,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:36:20" (1/1) ... [2023-08-30 22:36:20,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 22:36:20,718 INFO L178 MainTranslator]: Built tables and reachable declarations [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.i[43284,43297] [2023-08-30 22:36:21,198 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.i[43491,43504] [2023-08-30 22:36:21,205 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.i[43772,43785] [2023-08-30 22:36:21,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:36:21,224 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 22:36:21,275 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.i[43284,43297] [2023-08-30 22:36:21,282 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.i[43491,43504] [2023-08-30 22:36:21,288 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.i[43772,43785] [2023-08-30 22:36:21,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:36:21,353 INFO L208 MainTranslator]: Completed translation [2023-08-30 22:36:21,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:21 WrapperNode [2023-08-30 22:36:21,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 22:36:21,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 22:36:21,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 22:36:21,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 22:36:21,361 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 22:36:21,393 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 22:36:21,430 INFO L138 Inliner]: procedures = 274, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 252 [2023-08-30 22:36:21,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 22:36:21,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 22:36:21,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 22:36:21,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 22:36:21,441 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 22:36:21,441 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 22:36:21,457 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 22:36:21,457 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 22:36:21,465 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 22:36:21,468 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 22:36:21,470 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 22:36:21,472 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 22:36:21,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 22:36:21,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 22:36:21,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 22:36:21,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 22:36:21,477 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 22:36:21,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:36:21,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:36:21,522 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 22:36:21,547 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 22:36:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 22:36:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 22:36:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 22:36:21,567 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 22:36:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 22:36:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 22:36:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 22:36:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 22:36:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 22:36:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 22:36:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 22:36:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 22:36:21,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 22:36:21,569 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 22:36:21,807 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 22:36:21,809 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 22:36:22,232 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 22:36:22,241 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 22:36:22,241 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 22:36:22,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:36:22 BoogieIcfgContainer [2023-08-30 22:36:22,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 22:36:22,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 22:36:22,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 22:36:22,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 22:36:22,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:36:20" (1/3) ... [2023-08-30 22:36:22,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f2c6d3 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 22:36:22,252 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 22:36:22,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f2c6d3 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 22:36:22,253 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 22:36:22,254 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-08-30 22:36:22,261 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 22:36:22,271 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 22:36:22,271 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-30 22:36:22,271 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 22:36:22,402 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 22:36:22,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 266 transitions, 548 flow [2023-08-30 22:36:22,569 INFO L130 PetriNetUnfolder]: 15/264 cut-off events. [2023-08-30 22:36:22,569 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 22:36:22,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 264 events. 15/264 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 358 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 193. Up to 2 conditions per place. [2023-08-30 22:36:22,578 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 266 transitions, 548 flow [2023-08-30 22:36:22,586 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 255 transitions, 519 flow [2023-08-30 22:36:22,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 22:36:22,604 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 247 places, 255 transitions, 519 flow [2023-08-30 22:36:22,612 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 247 places, 255 transitions, 519 flow [2023-08-30 22:36:22,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 255 transitions, 519 flow [2023-08-30 22:36:22,676 INFO L130 PetriNetUnfolder]: 15/255 cut-off events. [2023-08-30 22:36:22,676 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 22:36:22,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 255 events. 15/255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 324 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 193. Up to 2 conditions per place. [2023-08-30 22:36:22,689 INFO L119 LiptonReduction]: Number of co-enabled transitions 15864 [2023-08-30 22:36:30,635 INFO L134 LiptonReduction]: Checked pairs total: 35874 [2023-08-30 22:36:30,636 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-08-30 22:36:30,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 22:36:30,662 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;@14410f60, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 22:36:30,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 22:36:30,669 INFO L130 PetriNetUnfolder]: 1/4 cut-off events. [2023-08-30 22:36:30,669 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 22:36:30,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:30,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 22:36:30,672 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 22:36:30,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:30,677 INFO L85 PathProgramCache]: Analyzing trace with hash 31999, now seen corresponding path program 1 times [2023-08-30 22:36:30,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:30,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179064498] [2023-08-30 22:36:30,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:30,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:30,824 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 22:36:30,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:30,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179064498] [2023-08-30 22:36:30,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179064498] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:30,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:30,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 22:36:30,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844855506] [2023-08-30 22:36:30,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:30,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 22:36:30,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:30,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 22:36:30,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 22:36:30,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 482 [2023-08-30 22:36:30,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 67 transitions, 143 flow. Second operand has 2 states, 2 states have (on average 253.5) internal successors, (507), 2 states have internal predecessors, (507), 0 states have call successors, (0), 0 states 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 22:36:30,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:30,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 482 [2023-08-30 22:36:30,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:31,258 INFO L130 PetriNetUnfolder]: 1489/2562 cut-off events. [2023-08-30 22:36:31,259 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2023-08-30 22:36:31,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4947 conditions, 2562 events. 1489/2562 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12043 event pairs, 1167 based on Foata normal form. 32/2225 useless extension candidates. Maximal degree in co-relation 4794. Up to 2313 conditions per place. [2023-08-30 22:36:31,271 INFO L137 encePairwiseOnDemand]: 479/482 looper letters, 52 selfloop transitions, 0 changer transitions 0/62 dead transitions. [2023-08-30 22:36:31,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 237 flow [2023-08-30 22:36:31,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 22:36:31,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 22:36:31,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 561 transitions. [2023-08-30 22:36:31,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5819502074688797 [2023-08-30 22:36:31,287 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 561 transitions. [2023-08-30 22:36:31,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 561 transitions. [2023-08-30 22:36:31,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:31,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 561 transitions. [2023-08-30 22:36:31,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 280.5) internal successors, (561), 2 states have internal predecessors, (561), 0 states have call successors, (0), 0 states 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 22:36:31,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 482.0) internal successors, (1446), 3 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states 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 22:36:31,301 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 482.0) internal successors, (1446), 3 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states 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 22:36:31,302 INFO L175 Difference]: Start difference. First operand has 63 places, 67 transitions, 143 flow. Second operand 2 states and 561 transitions. [2023-08-30 22:36:31,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 237 flow [2023-08-30 22:36:31,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 232 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 22:36:31,308 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 128 flow [2023-08-30 22:36:31,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=128, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2023-08-30 22:36:31,312 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -4 predicate places. [2023-08-30 22:36:31,313 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 128 flow [2023-08-30 22:36:31,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 253.5) internal successors, (507), 2 states have internal predecessors, (507), 0 states have call successors, (0), 0 states 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 22:36:31,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:31,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:31,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 22:36:31,314 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 22:36:31,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:31,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1793584973, now seen corresponding path program 1 times [2023-08-30 22:36:31,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:31,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270298277] [2023-08-30 22:36:31,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:31,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:31,495 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 22:36:31,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:31,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270298277] [2023-08-30 22:36:31,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270298277] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:31,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:31,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 22:36:31,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000951586] [2023-08-30 22:36:31,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:31,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 22:36:31,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:31,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 22:36:31,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 22:36:31,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 482 [2023-08-30 22:36:31,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states 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 22:36:31,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:31,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 482 [2023-08-30 22:36:31,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:31,799 INFO L130 PetriNetUnfolder]: 1457/2528 cut-off events. [2023-08-30 22:36:31,800 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 22:36:31,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4864 conditions, 2528 events. 1457/2528 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12005 event pairs, 1122 based on Foata normal form. 0/2191 useless extension candidates. Maximal degree in co-relation 4861. Up to 2166 conditions per place. [2023-08-30 22:36:31,811 INFO L137 encePairwiseOnDemand]: 478/482 looper letters, 67 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2023-08-30 22:36:31,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 306 flow [2023-08-30 22:36:31,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 22:36:31,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 22:36:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 815 transitions. [2023-08-30 22:36:31,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5636237897648686 [2023-08-30 22:36:31,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 815 transitions. [2023-08-30 22:36:31,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 815 transitions. [2023-08-30 22:36:31,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:31,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 815 transitions. [2023-08-30 22:36:31,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states 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 22:36:31,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states 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 22:36:31,824 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states 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 22:36:31,824 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 128 flow. Second operand 3 states and 815 transitions. [2023-08-30 22:36:31,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 306 flow [2023-08-30 22:36:31,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 306 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 22:36:31,827 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 132 flow [2023-08-30 22:36:31,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-08-30 22:36:31,828 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -2 predicate places. [2023-08-30 22:36:31,829 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 132 flow [2023-08-30 22:36:31,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states 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 22:36:31,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:31,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:31,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 22:36:31,830 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 22:36:31,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:31,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1351646121, now seen corresponding path program 1 times [2023-08-30 22:36:31,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:31,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592791157] [2023-08-30 22:36:31,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:31,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:33,306 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 22:36:33,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:33,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592791157] [2023-08-30 22:36:33,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592791157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:33,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:33,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 22:36:33,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798640380] [2023-08-30 22:36:33,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:33,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 22:36:33,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:33,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 22:36:33,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 22:36:34,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 482 [2023-08-30 22:36:34,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 231.4) internal successors, (1157), 5 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states 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 22:36:34,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:34,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 482 [2023-08-30 22:36:34,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:34,521 INFO L130 PetriNetUnfolder]: 1557/2661 cut-off events. [2023-08-30 22:36:34,522 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-30 22:36:34,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5260 conditions, 2661 events. 1557/2661 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12368 event pairs, 1200 based on Foata normal form. 0/2315 useless extension candidates. Maximal degree in co-relation 5256. Up to 2435 conditions per place. [2023-08-30 22:36:34,534 INFO L137 encePairwiseOnDemand]: 475/482 looper letters, 56 selfloop transitions, 9 changer transitions 0/73 dead transitions. [2023-08-30 22:36:34,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 288 flow [2023-08-30 22:36:34,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 22:36:34,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 22:36:34,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1440 transitions. [2023-08-30 22:36:34,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4979253112033195 [2023-08-30 22:36:34,538 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1440 transitions. [2023-08-30 22:36:34,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1440 transitions. [2023-08-30 22:36:34,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:34,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1440 transitions. [2023-08-30 22:36:34,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states 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 22:36:34,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 482.0) internal successors, (3374), 7 states have internal predecessors, (3374), 0 states have call successors, (0), 0 states 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 22:36:34,548 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 482.0) internal successors, (3374), 7 states have internal predecessors, (3374), 0 states have call successors, (0), 0 states 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 22:36:34,548 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 132 flow. Second operand 6 states and 1440 transitions. [2023-08-30 22:36:34,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 288 flow [2023-08-30 22:36:34,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 73 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 22:36:34,551 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 184 flow [2023-08-30 22:36:34,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2023-08-30 22:36:34,552 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 5 predicate places. [2023-08-30 22:36:34,553 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 184 flow [2023-08-30 22:36:34,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 231.4) internal successors, (1157), 5 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states 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 22:36:34,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:34,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:34,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 22:36:34,554 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 22:36:34,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:34,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1063417523, now seen corresponding path program 1 times [2023-08-30 22:36:34,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:34,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612570600] [2023-08-30 22:36:34,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:34,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:35,138 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 22:36:35,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:35,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612570600] [2023-08-30 22:36:35,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612570600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:35,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:35,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 22:36:35,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863807868] [2023-08-30 22:36:35,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:35,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 22:36:35,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:35,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 22:36:35,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 22:36:35,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 482 [2023-08-30 22:36:35,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states 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 22:36:35,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:35,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 482 [2023-08-30 22:36:35,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:35,784 INFO L130 PetriNetUnfolder]: 1732/2919 cut-off events. [2023-08-30 22:36:35,784 INFO L131 PetriNetUnfolder]: For 179/179 co-relation queries the response was YES. [2023-08-30 22:36:35,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5953 conditions, 2919 events. 1732/2919 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 13903 event pairs, 297 based on Foata normal form. 17/2612 useless extension candidates. Maximal degree in co-relation 5945. Up to 2384 conditions per place. [2023-08-30 22:36:35,801 INFO L137 encePairwiseOnDemand]: 476/482 looper letters, 92 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2023-08-30 22:36:35,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 484 flow [2023-08-30 22:36:35,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 22:36:35,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 22:36:35,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1233 transitions. [2023-08-30 22:36:35,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116182572614107 [2023-08-30 22:36:35,805 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1233 transitions. [2023-08-30 22:36:35,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1233 transitions. [2023-08-30 22:36:35,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:35,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1233 transitions. [2023-08-30 22:36:35,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 246.6) internal successors, (1233), 5 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states 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 22:36:35,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 482.0) internal successors, (2892), 6 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states 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 22:36:35,828 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 482.0) internal successors, (2892), 6 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states 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 22:36:35,828 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 184 flow. Second operand 5 states and 1233 transitions. [2023-08-30 22:36:35,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 484 flow [2023-08-30 22:36:35,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 110 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 22:36:35,832 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 246 flow [2023-08-30 22:36:35,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2023-08-30 22:36:35,833 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2023-08-30 22:36:35,834 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 246 flow [2023-08-30 22:36:35,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states 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 22:36:35,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:35,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:35,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 22:36:35,835 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 22:36:35,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:35,836 INFO L85 PathProgramCache]: Analyzing trace with hash -306674726, now seen corresponding path program 1 times [2023-08-30 22:36:35,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:35,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501577218] [2023-08-30 22:36:35,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:35,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:36,483 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 22:36:36,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:36,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501577218] [2023-08-30 22:36:36,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501577218] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:36,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:36,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 22:36:36,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392999562] [2023-08-30 22:36:36,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:36,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 22:36:36,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:36,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 22:36:36,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-30 22:36:37,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 482 [2023-08-30 22:36:37,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 246 flow. Second operand has 9 states, 9 states have (on average 215.44444444444446) internal successors, (1939), 9 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states 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 22:36:37,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:37,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 482 [2023-08-30 22:36:37,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:37,573 INFO L130 PetriNetUnfolder]: 1737/2937 cut-off events. [2023-08-30 22:36:37,573 INFO L131 PetriNetUnfolder]: For 646/646 co-relation queries the response was YES. [2023-08-30 22:36:37,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6300 conditions, 2937 events. 1737/2937 cut-off events. For 646/646 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 14004 event pairs, 1240 based on Foata normal form. 0/2610 useless extension candidates. Maximal degree in co-relation 6288. Up to 2710 conditions per place. [2023-08-30 22:36:37,587 INFO L137 encePairwiseOnDemand]: 472/482 looper letters, 70 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2023-08-30 22:36:37,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 93 transitions, 459 flow [2023-08-30 22:36:37,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 22:36:37,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 22:36:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1791 transitions. [2023-08-30 22:36:37,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4644709543568465 [2023-08-30 22:36:37,592 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1791 transitions. [2023-08-30 22:36:37,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1791 transitions. [2023-08-30 22:36:37,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:37,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1791 transitions. [2023-08-30 22:36:37,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 223.875) internal successors, (1791), 8 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 22:36:37,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states 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 22:36:37,603 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states 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 22:36:37,603 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 246 flow. Second operand 8 states and 1791 transitions. [2023-08-30 22:36:37,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 93 transitions, 459 flow [2023-08-30 22:36:37,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 93 transitions, 451 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 22:36:37,610 INFO L231 Difference]: Finished difference. Result has 85 places, 82 transitions, 312 flow [2023-08-30 22:36:37,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=312, PETRI_PLACES=85, PETRI_TRANSITIONS=82} [2023-08-30 22:36:37,612 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 22 predicate places. [2023-08-30 22:36:37,612 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 312 flow [2023-08-30 22:36:37,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 215.44444444444446) internal successors, (1939), 9 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states 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 22:36:37,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:37,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:37,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 22:36:37,614 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:37,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:37,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1111539889, now seen corresponding path program 1 times [2023-08-30 22:36:37,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:37,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122043596] [2023-08-30 22:36:37,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:37,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:37,671 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 22:36:37,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:37,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122043596] [2023-08-30 22:36:37,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122043596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:37,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:37,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 22:36:37,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110995635] [2023-08-30 22:36:37,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:37,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 22:36:37,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:37,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 22:36:37,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 22:36:37,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 482 [2023-08-30 22:36:37,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 82 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states 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 22:36:37,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:37,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 482 [2023-08-30 22:36:37,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:37,919 INFO L130 PetriNetUnfolder]: 1231/2113 cut-off events. [2023-08-30 22:36:37,919 INFO L131 PetriNetUnfolder]: For 267/267 co-relation queries the response was YES. [2023-08-30 22:36:37,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4496 conditions, 2113 events. 1231/2113 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 8208 event pairs, 573 based on Foata normal form. 52/1876 useless extension candidates. Maximal degree in co-relation 4480. Up to 1265 conditions per place. [2023-08-30 22:36:37,930 INFO L137 encePairwiseOnDemand]: 478/482 looper letters, 81 selfloop transitions, 3 changer transitions 4/98 dead transitions. [2023-08-30 22:36:37,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 98 transitions, 510 flow [2023-08-30 22:36:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 22:36:37,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 22:36:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 820 transitions. [2023-08-30 22:36:37,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5670816044260027 [2023-08-30 22:36:37,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 820 transitions. [2023-08-30 22:36:37,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 820 transitions. [2023-08-30 22:36:37,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:37,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 820 transitions. [2023-08-30 22:36:37,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states 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 22:36:37,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states 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 22:36:37,939 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states 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 22:36:37,939 INFO L175 Difference]: Start difference. First operand has 85 places, 82 transitions, 312 flow. Second operand 3 states and 820 transitions. [2023-08-30 22:36:37,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 98 transitions, 510 flow [2023-08-30 22:36:37,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 98 transitions, 457 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-08-30 22:36:37,945 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 243 flow [2023-08-30 22:36:37,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2023-08-30 22:36:37,948 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2023-08-30 22:36:37,949 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 243 flow [2023-08-30 22:36:37,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states 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 22:36:37,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:37,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:37,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 22:36:37,950 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 22:36:37,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:37,950 INFO L85 PathProgramCache]: Analyzing trace with hash 38477220, now seen corresponding path program 1 times [2023-08-30 22:36:37,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:37,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547600500] [2023-08-30 22:36:37,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:37,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:38,948 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 22:36:38,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:38,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547600500] [2023-08-30 22:36:38,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547600500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:38,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:38,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 22:36:38,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061027321] [2023-08-30 22:36:38,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:38,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 22:36:38,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:38,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 22:36:38,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-30 22:36:39,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 482 [2023-08-30 22:36:39,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 243 flow. Second operand has 10 states, 10 states have (on average 212.4) internal successors, (2124), 10 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states 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 22:36:39,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:39,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 482 [2023-08-30 22:36:39,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:40,456 INFO L130 PetriNetUnfolder]: 1378/2429 cut-off events. [2023-08-30 22:36:40,457 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2023-08-30 22:36:40,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5085 conditions, 2429 events. 1378/2429 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10166 event pairs, 378 based on Foata normal form. 0/2101 useless extension candidates. Maximal degree in co-relation 5072. Up to 1785 conditions per place. [2023-08-30 22:36:40,473 INFO L137 encePairwiseOnDemand]: 472/482 looper letters, 89 selfloop transitions, 17 changer transitions 9/124 dead transitions. [2023-08-30 22:36:40,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 590 flow [2023-08-30 22:36:40,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 22:36:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 22:36:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1795 transitions. [2023-08-30 22:36:40,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46550829875518673 [2023-08-30 22:36:40,479 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1795 transitions. [2023-08-30 22:36:40,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1795 transitions. [2023-08-30 22:36:40,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:40,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1795 transitions. [2023-08-30 22:36:40,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 224.375) internal successors, (1795), 8 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states 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 22:36:40,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states 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 22:36:40,490 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states 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 22:36:40,490 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 243 flow. Second operand 8 states and 1795 transitions. [2023-08-30 22:36:40,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 590 flow [2023-08-30 22:36:40,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 124 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 22:36:40,494 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 308 flow [2023-08-30 22:36:40,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=308, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2023-08-30 22:36:40,495 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 21 predicate places. [2023-08-30 22:36:40,495 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 308 flow [2023-08-30 22:36:40,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 212.4) internal successors, (2124), 10 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states 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 22:36:40,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:40,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:40,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 22:36:40,497 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:40,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:40,498 INFO L85 PathProgramCache]: Analyzing trace with hash -917016712, now seen corresponding path program 2 times [2023-08-30 22:36:40,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:40,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417090030] [2023-08-30 22:36:40,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:40,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:41,194 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 22:36:41,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:41,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417090030] [2023-08-30 22:36:41,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417090030] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:41,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:41,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 22:36:41,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25277455] [2023-08-30 22:36:41,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:41,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 22:36:41,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:41,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 22:36:41,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-30 22:36:42,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 482 [2023-08-30 22:36:42,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 308 flow. Second operand has 10 states, 10 states have (on average 212.4) internal successors, (2124), 10 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states 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 22:36:42,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:42,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 482 [2023-08-30 22:36:42,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:42,853 INFO L130 PetriNetUnfolder]: 1459/2574 cut-off events. [2023-08-30 22:36:42,854 INFO L131 PetriNetUnfolder]: For 350/350 co-relation queries the response was YES. [2023-08-30 22:36:42,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5573 conditions, 2574 events. 1459/2574 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 11062 event pairs, 469 based on Foata normal form. 0/2215 useless extension candidates. Maximal degree in co-relation 5558. Up to 1623 conditions per place. [2023-08-30 22:36:42,869 INFO L137 encePairwiseOnDemand]: 472/482 looper letters, 88 selfloop transitions, 19 changer transitions 8/124 dead transitions. [2023-08-30 22:36:42,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 124 transitions, 651 flow [2023-08-30 22:36:42,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 22:36:42,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 22:36:42,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1792 transitions. [2023-08-30 22:36:42,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46473029045643155 [2023-08-30 22:36:42,875 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1792 transitions. [2023-08-30 22:36:42,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1792 transitions. [2023-08-30 22:36:42,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:42,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1792 transitions. [2023-08-30 22:36:42,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 224.0) internal successors, (1792), 8 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:36:42,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states 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 22:36:42,885 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states 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 22:36:42,885 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 308 flow. Second operand 8 states and 1792 transitions. [2023-08-30 22:36:42,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 124 transitions, 651 flow [2023-08-30 22:36:42,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 124 transitions, 619 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-30 22:36:42,889 INFO L231 Difference]: Finished difference. Result has 88 places, 80 transitions, 351 flow [2023-08-30 22:36:42,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=351, PETRI_PLACES=88, PETRI_TRANSITIONS=80} [2023-08-30 22:36:42,890 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 25 predicate places. [2023-08-30 22:36:42,890 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 80 transitions, 351 flow [2023-08-30 22:36:42,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 212.4) internal successors, (2124), 10 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states 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 22:36:42,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:42,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:42,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 22:36:42,892 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 22:36:42,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:42,892 INFO L85 PathProgramCache]: Analyzing trace with hash -916987882, now seen corresponding path program 3 times [2023-08-30 22:36:42,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:42,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926219675] [2023-08-30 22:36:42,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:42,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:44,455 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 22:36:44,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:44,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926219675] [2023-08-30 22:36:44,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926219675] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:44,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:44,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 22:36:44,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230542506] [2023-08-30 22:36:44,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:44,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 22:36:44,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:44,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 22:36:44,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-30 22:36:45,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 482 [2023-08-30 22:36:45,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 351 flow. Second operand has 10 states, 10 states have (on average 212.4) internal successors, (2124), 10 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states 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 22:36:45,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:45,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 482 [2023-08-30 22:36:45,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:45,824 INFO L130 PetriNetUnfolder]: 1446/2562 cut-off events. [2023-08-30 22:36:45,824 INFO L131 PetriNetUnfolder]: For 543/543 co-relation queries the response was YES. [2023-08-30 22:36:45,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5600 conditions, 2562 events. 1446/2562 cut-off events. For 543/543 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 11107 event pairs, 406 based on Foata normal form. 0/2217 useless extension candidates. Maximal degree in co-relation 5583. Up to 1877 conditions per place. [2023-08-30 22:36:45,834 INFO L137 encePairwiseOnDemand]: 472/482 looper letters, 94 selfloop transitions, 18 changer transitions 10/130 dead transitions. [2023-08-30 22:36:45,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 130 transitions, 706 flow [2023-08-30 22:36:45,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 22:36:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 22:36:45,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2012 transitions. [2023-08-30 22:36:45,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638082065467958 [2023-08-30 22:36:45,840 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2012 transitions. [2023-08-30 22:36:45,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2012 transitions. [2023-08-30 22:36:45,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:45,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2012 transitions. [2023-08-30 22:36:45,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 223.55555555555554) internal successors, (2012), 9 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states 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 22:36:45,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 482.0) internal successors, (4820), 10 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states 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 22:36:45,851 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 482.0) internal successors, (4820), 10 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states 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 22:36:45,852 INFO L175 Difference]: Start difference. First operand has 88 places, 80 transitions, 351 flow. Second operand 9 states and 2012 transitions. [2023-08-30 22:36:45,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 130 transitions, 706 flow [2023-08-30 22:36:45,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 130 transitions, 683 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-30 22:36:45,856 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 356 flow [2023-08-30 22:36:45,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=356, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2023-08-30 22:36:45,857 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 26 predicate places. [2023-08-30 22:36:45,857 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 356 flow [2023-08-30 22:36:45,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 212.4) internal successors, (2124), 10 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states 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 22:36:45,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:45,858 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 22:36:45,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 22:36:45,859 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:45,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:45,859 INFO L85 PathProgramCache]: Analyzing trace with hash 546649345, now seen corresponding path program 1 times [2023-08-30 22:36:45,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:45,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330633797] [2023-08-30 22:36:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:45,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:45,939 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 22:36:45,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:45,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330633797] [2023-08-30 22:36:45,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330633797] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:45,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:45,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 22:36:45,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621714327] [2023-08-30 22:36:45,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:45,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 22:36:45,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:45,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 22:36:45,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 22:36:45,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 482 [2023-08-30 22:36:45,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states 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 22:36:45,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:45,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 482 [2023-08-30 22:36:45,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:46,120 INFO L130 PetriNetUnfolder]: 888/1663 cut-off events. [2023-08-30 22:36:46,120 INFO L131 PetriNetUnfolder]: For 437/437 co-relation queries the response was YES. [2023-08-30 22:36:46,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3802 conditions, 1663 events. 888/1663 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6927 event pairs, 166 based on Foata normal form. 2/1525 useless extension candidates. Maximal degree in co-relation 3785. Up to 1180 conditions per place. [2023-08-30 22:36:46,135 INFO L137 encePairwiseOnDemand]: 476/482 looper letters, 71 selfloop transitions, 6 changer transitions 1/90 dead transitions. [2023-08-30 22:36:46,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 551 flow [2023-08-30 22:36:46,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 22:36:46,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 22:36:46,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 798 transitions. [2023-08-30 22:36:46,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518672199170125 [2023-08-30 22:36:46,138 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 798 transitions. [2023-08-30 22:36:46,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 798 transitions. [2023-08-30 22:36:46,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:46,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 798 transitions. [2023-08-30 22:36:46,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:46,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states 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 22:36:46,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states 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 22:36:46,144 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 356 flow. Second operand 3 states and 798 transitions. [2023-08-30 22:36:46,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 551 flow [2023-08-30 22:36:46,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 90 transitions, 499 flow, removed 1 selfloop flow, removed 9 redundant places. [2023-08-30 22:36:46,148 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 318 flow [2023-08-30 22:36:46,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-08-30 22:36:46,150 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 19 predicate places. [2023-08-30 22:36:46,150 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 318 flow [2023-08-30 22:36:46,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states 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 22:36:46,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:46,151 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 22:36:46,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 22:36:46,151 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:46,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:46,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1906929845, now seen corresponding path program 1 times [2023-08-30 22:36:46,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:46,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372249233] [2023-08-30 22:36:46,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:46,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:48,237 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 22:36:48,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:48,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372249233] [2023-08-30 22:36:48,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372249233] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:48,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:48,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-30 22:36:48,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010145576] [2023-08-30 22:36:48,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:48,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 22:36:48,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:48,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 22:36:48,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-08-30 22:36:49,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 482 [2023-08-30 22:36:49,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 318 flow. Second operand has 16 states, 16 states have (on average 218.1875) internal successors, (3491), 16 states have internal predecessors, (3491), 0 states have call successors, (0), 0 states 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 22:36:49,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:49,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 482 [2023-08-30 22:36:49,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:50,904 INFO L130 PetriNetUnfolder]: 1593/3015 cut-off events. [2023-08-30 22:36:50,904 INFO L131 PetriNetUnfolder]: For 396/400 co-relation queries the response was YES. [2023-08-30 22:36:50,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6720 conditions, 3015 events. 1593/3015 cut-off events. For 396/400 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 15281 event pairs, 326 based on Foata normal form. 1/2877 useless extension candidates. Maximal degree in co-relation 6704. Up to 1097 conditions per place. [2023-08-30 22:36:50,917 INFO L137 encePairwiseOnDemand]: 463/482 looper letters, 168 selfloop transitions, 42 changer transitions 14/232 dead transitions. [2023-08-30 22:36:50,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 232 transitions, 1166 flow [2023-08-30 22:36:50,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 22:36:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 22:36:50,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4755 transitions. [2023-08-30 22:36:50,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.469768820391227 [2023-08-30 22:36:50,930 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4755 transitions. [2023-08-30 22:36:50,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4755 transitions. [2023-08-30 22:36:50,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:50,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4755 transitions. [2023-08-30 22:36:50,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 226.42857142857142) internal successors, (4755), 21 states have internal predecessors, (4755), 0 states have call successors, (0), 0 states 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 22:36:50,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 482.0) internal successors, (10604), 22 states have internal predecessors, (10604), 0 states have call successors, (0), 0 states 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 22:36:50,957 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 482.0) internal successors, (10604), 22 states have internal predecessors, (10604), 0 states have call successors, (0), 0 states 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 22:36:50,957 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 318 flow. Second operand 21 states and 4755 transitions. [2023-08-30 22:36:50,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 232 transitions, 1166 flow [2023-08-30 22:36:50,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 232 transitions, 1146 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 22:36:50,964 INFO L231 Difference]: Finished difference. Result has 108 places, 100 transitions, 535 flow [2023-08-30 22:36:50,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=535, PETRI_PLACES=108, PETRI_TRANSITIONS=100} [2023-08-30 22:36:50,964 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 45 predicate places. [2023-08-30 22:36:50,965 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 100 transitions, 535 flow [2023-08-30 22:36:50,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 218.1875) internal successors, (3491), 16 states have internal predecessors, (3491), 0 states have call successors, (0), 0 states 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 22:36:50,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:50,966 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 22:36:50,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 22:36:50,966 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:50,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:50,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1823393625, now seen corresponding path program 2 times [2023-08-30 22:36:50,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:50,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839188476] [2023-08-30 22:36:50,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:50,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:52,215 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 22:36:52,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:52,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839188476] [2023-08-30 22:36:52,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839188476] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:52,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:52,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 22:36:52,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645274105] [2023-08-30 22:36:52,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:52,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 22:36:52,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:52,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 22:36:52,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-08-30 22:36:52,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 482 [2023-08-30 22:36:52,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 100 transitions, 535 flow. Second operand has 11 states, 11 states have (on average 223.1818181818182) internal successors, (2455), 11 states have internal predecessors, (2455), 0 states have call successors, (0), 0 states 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 22:36:52,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:52,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 482 [2023-08-30 22:36:52,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:53,274 INFO L130 PetriNetUnfolder]: 1338/2509 cut-off events. [2023-08-30 22:36:53,275 INFO L131 PetriNetUnfolder]: For 788/790 co-relation queries the response was YES. [2023-08-30 22:36:53,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6144 conditions, 2509 events. 1338/2509 cut-off events. For 788/790 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 11809 event pairs, 405 based on Foata normal form. 28/2471 useless extension candidates. Maximal degree in co-relation 6120. Up to 893 conditions per place. [2023-08-30 22:36:53,288 INFO L137 encePairwiseOnDemand]: 468/482 looper letters, 113 selfloop transitions, 26 changer transitions 7/154 dead transitions. [2023-08-30 22:36:53,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 154 transitions, 946 flow [2023-08-30 22:36:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 22:36:53,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 22:36:53,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2104 transitions. [2023-08-30 22:36:53,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4850161364684186 [2023-08-30 22:36:53,295 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2104 transitions. [2023-08-30 22:36:53,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2104 transitions. [2023-08-30 22:36:53,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:53,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2104 transitions. [2023-08-30 22:36:53,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 233.77777777777777) internal successors, (2104), 9 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states 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 22:36:53,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 482.0) internal successors, (4820), 10 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states 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 22:36:53,306 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 482.0) internal successors, (4820), 10 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states 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 22:36:53,306 INFO L175 Difference]: Start difference. First operand has 108 places, 100 transitions, 535 flow. Second operand 9 states and 2104 transitions. [2023-08-30 22:36:53,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 154 transitions, 946 flow [2023-08-30 22:36:53,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 154 transitions, 836 flow, removed 21 selfloop flow, removed 16 redundant places. [2023-08-30 22:36:53,314 INFO L231 Difference]: Finished difference. Result has 100 places, 96 transitions, 498 flow [2023-08-30 22:36:53,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=498, PETRI_PLACES=100, PETRI_TRANSITIONS=96} [2023-08-30 22:36:53,315 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 37 predicate places. [2023-08-30 22:36:53,315 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 96 transitions, 498 flow [2023-08-30 22:36:53,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 223.1818181818182) internal successors, (2455), 11 states have internal predecessors, (2455), 0 states have call successors, (0), 0 states 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 22:36:53,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:53,316 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 22:36:53,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 22:36:53,316 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:53,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:53,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1157294127, now seen corresponding path program 3 times [2023-08-30 22:36:53,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:53,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335901298] [2023-08-30 22:36:53,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:53,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:54,260 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 22:36:54,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:54,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335901298] [2023-08-30 22:36:54,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335901298] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:54,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:54,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 22:36:54,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233499662] [2023-08-30 22:36:54,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:54,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 22:36:54,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:54,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 22:36:54,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-30 22:36:55,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 482 [2023-08-30 22:36:55,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 96 transitions, 498 flow. Second operand has 12 states, 12 states have (on average 220.91666666666666) internal successors, (2651), 12 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states 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 22:36:55,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:55,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 482 [2023-08-30 22:36:55,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:55,620 INFO L130 PetriNetUnfolder]: 1141/2151 cut-off events. [2023-08-30 22:36:55,621 INFO L131 PetriNetUnfolder]: For 777/777 co-relation queries the response was YES. [2023-08-30 22:36:55,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5430 conditions, 2151 events. 1141/2151 cut-off events. For 777/777 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9631 event pairs, 254 based on Foata normal form. 14/2103 useless extension candidates. Maximal degree in co-relation 5412. Up to 793 conditions per place. [2023-08-30 22:36:55,631 INFO L137 encePairwiseOnDemand]: 471/482 looper letters, 110 selfloop transitions, 25 changer transitions 11/154 dead transitions. [2023-08-30 22:36:55,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 154 transitions, 935 flow [2023-08-30 22:36:55,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 22:36:55,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 22:36:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2519 transitions. [2023-08-30 22:36:55,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475103734439834 [2023-08-30 22:36:55,637 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2519 transitions. [2023-08-30 22:36:55,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2519 transitions. [2023-08-30 22:36:55,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:55,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2519 transitions. [2023-08-30 22:36:55,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 229.0) internal successors, (2519), 11 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states 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 22:36:55,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 482.0) internal successors, (5784), 12 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states 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 22:36:55,650 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 482.0) internal successors, (5784), 12 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states 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 22:36:55,650 INFO L175 Difference]: Start difference. First operand has 100 places, 96 transitions, 498 flow. Second operand 11 states and 2519 transitions. [2023-08-30 22:36:55,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 154 transitions, 935 flow [2023-08-30 22:36:55,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 154 transitions, 912 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-30 22:36:55,657 INFO L231 Difference]: Finished difference. Result has 108 places, 97 transitions, 551 flow [2023-08-30 22:36:55,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=551, PETRI_PLACES=108, PETRI_TRANSITIONS=97} [2023-08-30 22:36:55,657 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 45 predicate places. [2023-08-30 22:36:55,658 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 551 flow [2023-08-30 22:36:55,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 220.91666666666666) internal successors, (2651), 12 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states 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 22:36:55,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:55,659 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 22:36:55,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 22:36:55,659 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 22:36:55,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:55,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1116139787, now seen corresponding path program 1 times [2023-08-30 22:36:55,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:55,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613893633] [2023-08-30 22:36:55,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:55,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:58,013 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 22:36:58,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:58,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613893633] [2023-08-30 22:36:58,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613893633] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:58,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:58,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-30 22:36:58,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221907343] [2023-08-30 22:36:58,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:58,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 22:36:58,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:58,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 22:36:58,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-08-30 22:36:58,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 482 [2023-08-30 22:36:58,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 97 transitions, 551 flow. Second operand has 15 states, 15 states have (on average 215.4) internal successors, (3231), 15 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states 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 22:36:58,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:58,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 482 [2023-08-30 22:36:58,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:59,767 INFO L130 PetriNetUnfolder]: 1323/2495 cut-off events. [2023-08-30 22:36:59,767 INFO L131 PetriNetUnfolder]: For 1388/1390 co-relation queries the response was YES. [2023-08-30 22:36:59,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6382 conditions, 2495 events. 1323/2495 cut-off events. For 1388/1390 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 11684 event pairs, 527 based on Foata normal form. 0/2421 useless extension candidates. Maximal degree in co-relation 6361. Up to 1474 conditions per place. [2023-08-30 22:36:59,779 INFO L137 encePairwiseOnDemand]: 469/482 looper letters, 135 selfloop transitions, 27 changer transitions 11/181 dead transitions. [2023-08-30 22:36:59,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 181 transitions, 1117 flow [2023-08-30 22:36:59,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 22:36:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 22:36:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2705 transitions. [2023-08-30 22:36:59,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4676694329183956 [2023-08-30 22:36:59,787 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2705 transitions. [2023-08-30 22:36:59,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2705 transitions. [2023-08-30 22:36:59,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:59,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2705 transitions. [2023-08-30 22:36:59,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 225.41666666666666) internal successors, (2705), 12 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states 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 22:36:59,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states 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 22:36:59,804 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states 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 22:36:59,804 INFO L175 Difference]: Start difference. First operand has 108 places, 97 transitions, 551 flow. Second operand 12 states and 2705 transitions. [2023-08-30 22:36:59,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 181 transitions, 1117 flow [2023-08-30 22:36:59,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 181 transitions, 1086 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 22:36:59,812 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 628 flow [2023-08-30 22:36:59,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=628, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2023-08-30 22:36:59,813 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 52 predicate places. [2023-08-30 22:36:59,814 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 628 flow [2023-08-30 22:36:59,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 215.4) internal successors, (3231), 15 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states 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 22:36:59,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:59,815 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 22:36:59,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 22:36:59,815 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 22:36:59,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:59,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1441368751, now seen corresponding path program 2 times [2023-08-30 22:36:59,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:59,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649627610] [2023-08-30 22:36:59,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:59,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:37:01,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:37:01,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:37:01,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649627610] [2023-08-30 22:37:01,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649627610] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:37:01,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:37:01,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-30 22:37:01,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640675987] [2023-08-30 22:37:01,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:37:01,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 22:37:01,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:37:01,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 22:37:01,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-08-30 22:37:02,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 482 [2023-08-30 22:37:02,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 628 flow. Second operand has 15 states, 15 states have (on average 215.4) internal successors, (3231), 15 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states 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 22:37:02,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:37:02,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 482 [2023-08-30 22:37:02,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:37:03,353 INFO L130 PetriNetUnfolder]: 1522/2894 cut-off events. [2023-08-30 22:37:03,354 INFO L131 PetriNetUnfolder]: For 1804/1804 co-relation queries the response was YES. [2023-08-30 22:37:03,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7428 conditions, 2894 events. 1522/2894 cut-off events. For 1804/1804 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14272 event pairs, 362 based on Foata normal form. 8/2828 useless extension candidates. Maximal degree in co-relation 7404. Up to 921 conditions per place. [2023-08-30 22:37:03,365 INFO L137 encePairwiseOnDemand]: 469/482 looper letters, 134 selfloop transitions, 32 changer transitions 11/185 dead transitions. [2023-08-30 22:37:03,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 185 transitions, 1204 flow [2023-08-30 22:37:03,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 22:37:03,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 22:37:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2701 transitions. [2023-08-30 22:37:03,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46697786998616875 [2023-08-30 22:37:03,369 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2701 transitions. [2023-08-30 22:37:03,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2701 transitions. [2023-08-30 22:37:03,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:37:03,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2701 transitions. [2023-08-30 22:37:03,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 225.08333333333334) internal successors, (2701), 12 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states 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 22:37:03,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states 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 22:37:03,379 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states 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 22:37:03,380 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 628 flow. Second operand 12 states and 2701 transitions. [2023-08-30 22:37:03,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 185 transitions, 1204 flow [2023-08-30 22:37:03,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 185 transitions, 1160 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-30 22:37:03,388 INFO L231 Difference]: Finished difference. Result has 122 places, 106 transitions, 705 flow [2023-08-30 22:37:03,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=705, PETRI_PLACES=122, PETRI_TRANSITIONS=106} [2023-08-30 22:37:03,388 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 59 predicate places. [2023-08-30 22:37:03,389 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 106 transitions, 705 flow [2023-08-30 22:37:03,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 215.4) internal successors, (3231), 15 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states 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 22:37:03,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:37:03,390 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 22:37:03,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 22:37:03,390 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 22:37:03,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:37:03,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1674967413, now seen corresponding path program 3 times [2023-08-30 22:37:03,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:37:03,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406813044] [2023-08-30 22:37:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:37:03,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:37:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:37:07,341 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 22:37:07,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:37:07,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406813044] [2023-08-30 22:37:07,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406813044] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:37:07,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:37:07,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-30 22:37:07,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129148716] [2023-08-30 22:37:07,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:37:07,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 22:37:07,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:37:07,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 22:37:07,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-08-30 22:37:08,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 482 [2023-08-30 22:37:08,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 106 transitions, 705 flow. Second operand has 16 states, 16 states have (on average 218.25) internal successors, (3492), 16 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states 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 22:37:08,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:37:08,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 482 [2023-08-30 22:37:08,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:37:09,041 INFO L130 PetriNetUnfolder]: 1692/3219 cut-off events. [2023-08-30 22:37:09,041 INFO L131 PetriNetUnfolder]: For 2508/2508 co-relation queries the response was YES. [2023-08-30 22:37:09,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8400 conditions, 3219 events. 1692/3219 cut-off events. For 2508/2508 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 15893 event pairs, 187 based on Foata normal form. 8/3144 useless extension candidates. Maximal degree in co-relation 8373. Up to 882 conditions per place. [2023-08-30 22:37:09,057 INFO L137 encePairwiseOnDemand]: 470/482 looper letters, 135 selfloop transitions, 33 changer transitions 11/187 dead transitions. [2023-08-30 22:37:09,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 187 transitions, 1275 flow [2023-08-30 22:37:09,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 22:37:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 22:37:09,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2737 transitions. [2023-08-30 22:37:09,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732019363762102 [2023-08-30 22:37:09,061 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2737 transitions. [2023-08-30 22:37:09,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2737 transitions. [2023-08-30 22:37:09,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:37:09,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2737 transitions. [2023-08-30 22:37:09,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 228.08333333333334) internal successors, (2737), 12 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states 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 22:37:09,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states 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 22:37:09,071 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states 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 22:37:09,071 INFO L175 Difference]: Start difference. First operand has 122 places, 106 transitions, 705 flow. Second operand 12 states and 2737 transitions. [2023-08-30 22:37:09,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 187 transitions, 1275 flow [2023-08-30 22:37:09,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 187 transitions, 1217 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-08-30 22:37:09,084 INFO L231 Difference]: Finished difference. Result has 127 places, 109 transitions, 761 flow [2023-08-30 22:37:09,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=761, PETRI_PLACES=127, PETRI_TRANSITIONS=109} [2023-08-30 22:37:09,085 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 64 predicate places. [2023-08-30 22:37:09,085 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 109 transitions, 761 flow [2023-08-30 22:37:09,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 218.25) internal successors, (3492), 16 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states 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 22:37:09,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:37:09,086 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 22:37:09,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 22:37:09,086 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 22:37:09,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:37:09,087 INFO L85 PathProgramCache]: Analyzing trace with hash 241474651, now seen corresponding path program 1 times [2023-08-30 22:37:09,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:37:09,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203243236] [2023-08-30 22:37:09,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:37:09,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:37:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15