./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/queue_longest.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_longest.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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --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 22:36:18,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 22:36:18,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 22:36:18,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 22:36:18,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 22:36:18,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 22:36:18,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 22:36:18,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 22:36:18,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 22:36:18,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 22:36:18,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 22:36:18,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 22:36:18,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 22:36:18,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 22:36:18,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 22:36:18,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 22:36:18,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 22:36:18,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 22:36:18,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 22:36:18,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 22:36:18,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 22:36:18,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 22:36:18,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 22:36:18,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 22:36:18,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 22:36:18,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 22:36:18,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 22:36:18,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 22:36:18,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 22:36:18,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 22:36:18,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 22:36:18,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 22:36:18,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 22:36:18,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 22:36:18,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 22:36:18,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 22:36:18,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 22:36:18,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 22:36:18,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 22:36:18,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 22:36:18,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 22:36:18,814 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 22:36:18,835 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 22:36:18,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 22:36:18,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 22:36:18,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 22:36:18,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 22:36:18,837 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 22:36:18,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 22:36:18,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 22:36:18,838 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 22:36:18,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 22:36:18,839 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 22:36:18,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 22:36:18,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 22:36:18,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 22:36:18,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 22:36:18,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 22:36:18,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 22:36:18,841 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 22:36:18,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 22:36:18,841 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 22:36:18,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 22:36:18,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 22:36:18,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 22:36:18,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 22:36:18,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:36:18,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 22:36:18,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 22:36:18,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 22:36:18,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 22:36:18,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 22:36:18,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 22:36:18,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 22:36:18,845 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 22:36:18,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 22:36:18,845 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 22:36:18,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 22:36:19,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 22:36:19,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 22:36:19,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 22:36:19,170 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 22:36:19,170 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 22:36:19,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longest.i [2023-08-30 22:36:20,247 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 22:36:20,546 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 22:36:20,546 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i [2023-08-30 22:36:20,571 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/395cd3cf6/6123acd64f0d413dac6bfc90f9997a6c/FLAG12119e174 [2023-08-30 22:36:20,590 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/395cd3cf6/6123acd64f0d413dac6bfc90f9997a6c [2023-08-30 22:36:20,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 22:36:20,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 22:36:20,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 22:36:20,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 22:36:20,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 22:36:20,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:36:20" (1/1) ... [2023-08-30 22:36:20,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c20d2 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 22:36:20,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:36:20" (1/1) ... [2023-08-30 22:36:20,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 22:36:20,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 22:36:21,027 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_longest.i[43296,43309] [2023-08-30 22:36:21,035 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_longest.i[43503,43516] [2023-08-30 22:36:21,043 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_longest.i[43783,43796] [2023-08-30 22:36:21,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:36:21,063 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 22:36:21,101 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_longest.i[43296,43309] [2023-08-30 22:36:21,102 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_longest.i[43503,43516] [2023-08-30 22:36:21,105 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_longest.i[43783,43796] [2023-08-30 22:36:21,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:36:21,178 INFO L208 MainTranslator]: Completed translation [2023-08-30 22:36:21,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:36:21 WrapperNode [2023-08-30 22:36:21,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 22:36:21,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 22:36:21,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 22:36:21,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 22:36:21,186 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 22:36:21,201 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 22:36:21,229 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 243 [2023-08-30 22:36:21,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 22:36:21,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 22:36:21,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 22:36:21,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 22:36:21,238 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 22:36:21,238 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 22:36:21,242 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 22:36:21,243 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 22:36:21,252 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 22:36:21,255 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 22:36:21,258 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 22:36:21,259 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 22:36:21,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 22:36:21,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 22:36:21,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 22:36:21,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 22:36:21,265 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 22:36:21,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:36:21,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:36:21,298 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 22:36:21,300 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 22:36:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 22:36:21,330 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 22:36:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 22:36:21,330 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 22:36:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 22:36:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 22:36:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 22:36:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 22:36:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 22:36:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 22:36:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 22:36:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 22:36:21,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 22:36:21,332 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 22:36:21,482 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 22:36:21,483 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 22:36:21,939 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 22:36:21,947 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 22:36:21,948 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 22:36:21,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:36:21 BoogieIcfgContainer [2023-08-30 22:36:21,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 22:36:21,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 22:36:21,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 22:36:21,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 22:36:21,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:36:20" (1/3) ... [2023-08-30 22:36:21,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@949f57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:36:21, skipping insertion in model container [2023-08-30 22:36:21,961 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 22:36:21,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@949f57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:36:21, skipping insertion in model container [2023-08-30 22:36:21,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:36:21" (3/3) ... [2023-08-30 22:36:21,963 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2023-08-30 22:36:21,971 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 22:36:21,980 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 22:36:21,980 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-30 22:36:21,980 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 22:36:22,110 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 22:36:22,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 258 transitions, 532 flow [2023-08-30 22:36:22,264 INFO L130 PetriNetUnfolder]: 15/256 cut-off events. [2023-08-30 22:36:22,265 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 22:36:22,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 256 events. 15/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 359 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-08-30 22:36:22,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 258 transitions, 532 flow [2023-08-30 22:36:22,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 247 transitions, 503 flow [2023-08-30 22:36:22,287 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 22:36:22,306 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 247 transitions, 503 flow [2023-08-30 22:36:22,310 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 247 transitions, 503 flow [2023-08-30 22:36:22,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 247 transitions, 503 flow [2023-08-30 22:36:22,380 INFO L130 PetriNetUnfolder]: 15/247 cut-off events. [2023-08-30 22:36:22,380 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 22:36:22,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 247 events. 15/247 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 326 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-08-30 22:36:22,394 INFO L119 LiptonReduction]: Number of co-enabled transitions 15864 [2023-08-30 22:36:28,707 INFO L134 LiptonReduction]: Checked pairs total: 33075 [2023-08-30 22:36:28,707 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-08-30 22:36:28,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 22:36:28,734 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;@7034e76, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 22:36:28,734 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 22:36:28,736 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 22:36:28,736 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 22:36:28,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:28,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 22:36:28,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:28,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:28,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2023-08-30 22:36:28,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:28,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518027411] [2023-08-30 22:36:28,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:28,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:28,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:28,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518027411] [2023-08-30 22:36:28,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518027411] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:28,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:28,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 22:36:28,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705861816] [2023-08-30 22:36:28,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:28,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 22:36:28,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:28,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 22:36:28,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 22:36:28,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 473 [2023-08-30 22:36:28,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 141 flow. Second operand has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:28,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:28,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 473 [2023-08-30 22:36:28,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:29,323 INFO L130 PetriNetUnfolder]: 1540/2645 cut-off events. [2023-08-30 22:36:29,323 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-08-30 22:36:29,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5115 conditions, 2645 events. 1540/2645 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12466 event pairs, 1212 based on Foata normal form. 32/2302 useless extension candidates. Maximal degree in co-relation 4962. Up to 2396 conditions per place. [2023-08-30 22:36:29,337 INFO L137 encePairwiseOnDemand]: 470/473 looper letters, 53 selfloop transitions, 0 changer transitions 0/63 dead transitions. [2023-08-30 22:36:29,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 241 flow [2023-08-30 22:36:29,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 22:36:29,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 22:36:29,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 546 transitions. [2023-08-30 22:36:29,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771670190274841 [2023-08-30 22:36:29,354 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 546 transitions. [2023-08-30 22:36:29,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 546 transitions. [2023-08-30 22:36:29,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:29,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 546 transitions. [2023-08-30 22:36:29,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 273.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,366 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,368 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 141 flow. Second operand 2 states and 546 transitions. [2023-08-30 22:36:29,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 241 flow [2023-08-30 22:36:29,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 236 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 22:36:29,374 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 130 flow [2023-08-30 22:36:29,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2023-08-30 22:36:29,378 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2023-08-30 22:36:29,378 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 130 flow [2023-08-30 22:36:29,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:29,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:29,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 22:36:29,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:29,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:29,381 INFO L85 PathProgramCache]: Analyzing trace with hash 110343563, now seen corresponding path program 1 times [2023-08-30 22:36:29,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:29,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974201366] [2023-08-30 22:36:29,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:29,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:29,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:29,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974201366] [2023-08-30 22:36:29,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974201366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:29,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:29,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 22:36:29,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648353691] [2023-08-30 22:36:29,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:29,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 22:36:29,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:29,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 22:36:29,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 22:36:29,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 473 [2023-08-30 22:36:29,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:29,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 473 [2023-08-30 22:36:29,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:29,939 INFO L130 PetriNetUnfolder]: 1508/2611 cut-off events. [2023-08-30 22:36:29,940 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 22:36:29,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5032 conditions, 2611 events. 1508/2611 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 12447 event pairs, 1167 based on Foata normal form. 0/2268 useless extension candidates. Maximal degree in co-relation 5029. Up to 2249 conditions per place. [2023-08-30 22:36:29,950 INFO L137 encePairwiseOnDemand]: 469/473 looper letters, 68 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2023-08-30 22:36:29,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 81 transitions, 310 flow [2023-08-30 22:36:29,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 22:36:29,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 22:36:29,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 792 transitions. [2023-08-30 22:36:29,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2023-08-30 22:36:29,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 792 transitions. [2023-08-30 22:36:29,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 792 transitions. [2023-08-30 22:36:29,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:29,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 792 transitions. [2023-08-30 22:36:29,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,963 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 130 flow. Second operand 3 states and 792 transitions. [2023-08-30 22:36:29,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 81 transitions, 310 flow [2023-08-30 22:36:29,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 81 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 22:36:29,967 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 134 flow [2023-08-30 22:36:29,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2023-08-30 22:36:29,968 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2023-08-30 22:36:29,969 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 134 flow [2023-08-30 22:36:29,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:29,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:29,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:29,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 22:36:29,970 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:29,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:29,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1330496416, now seen corresponding path program 1 times [2023-08-30 22:36:29,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:29,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826209336] [2023-08-30 22:36:29,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:29,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:30,720 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 22:36:30,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:30,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826209336] [2023-08-30 22:36:30,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826209336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:30,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:30,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 22:36:30,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018323482] [2023-08-30 22:36:30,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:30,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 22:36:30,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:30,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 22:36:30,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 22:36:30,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 473 [2023-08-30 22:36:30,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 222.4) internal successors, (1112), 5 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states 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 22:36:30,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:30,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 473 [2023-08-30 22:36:30,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:31,317 INFO L130 PetriNetUnfolder]: 1608/2744 cut-off events. [2023-08-30 22:36:31,318 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-30 22:36:31,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5428 conditions, 2744 events. 1608/2744 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 12803 event pairs, 1244 based on Foata normal form. 0/2392 useless extension candidates. Maximal degree in co-relation 5424. Up to 2518 conditions per place. [2023-08-30 22:36:31,330 INFO L137 encePairwiseOnDemand]: 467/473 looper letters, 58 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2023-08-30 22:36:31,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 288 flow [2023-08-30 22:36:31,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 22:36:31,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 22:36:31,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1166 transitions. [2023-08-30 22:36:31,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930232558139535 [2023-08-30 22:36:31,333 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1166 transitions. [2023-08-30 22:36:31,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1166 transitions. [2023-08-30 22:36:31,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:31,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1166 transitions. [2023-08-30 22:36:31,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.2) internal successors, (1166), 5 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states 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 22:36:31,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 473.0) internal successors, (2838), 6 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states 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 22:36:31,342 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 473.0) internal successors, (2838), 6 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states 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 22:36:31,342 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 134 flow. Second operand 5 states and 1166 transitions. [2023-08-30 22:36:31,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 288 flow [2023-08-30 22:36:31,344 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 22:36:31,346 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 173 flow [2023-08-30 22:36:31,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2023-08-30 22:36:31,347 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2023-08-30 22:36:31,347 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 173 flow [2023-08-30 22:36:31,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.4) internal successors, (1112), 5 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states 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 22:36:31,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:31,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:31,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 22:36:31,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:31,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:31,349 INFO L85 PathProgramCache]: Analyzing trace with hash -588975779, now seen corresponding path program 1 times [2023-08-30 22:36:31,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:31,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888205118] [2023-08-30 22:36:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:31,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:31,741 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 22:36:31,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:31,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888205118] [2023-08-30 22:36:31,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888205118] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:31,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:31,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 22:36:31,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425429372] [2023-08-30 22:36:31,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:31,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 22:36:31,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:31,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 22:36:31,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 22:36:31,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 473 [2023-08-30 22:36:31,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 220.16666666666666) internal successors, (1321), 6 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:31,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:31,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 473 [2023-08-30 22:36:31,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:32,299 INFO L130 PetriNetUnfolder]: 1839/3131 cut-off events. [2023-08-30 22:36:32,299 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-30 22:36:32,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6327 conditions, 3131 events. 1839/3131 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 15156 event pairs, 302 based on Foata normal form. 17/2811 useless extension candidates. Maximal degree in co-relation 6320. Up to 2548 conditions per place. [2023-08-30 22:36:32,315 INFO L137 encePairwiseOnDemand]: 465/473 looper letters, 98 selfloop transitions, 16 changer transitions 0/122 dead transitions. [2023-08-30 22:36:32,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 122 transitions, 526 flow [2023-08-30 22:36:32,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 22:36:32,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 22:36:32,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1420 transitions. [2023-08-30 22:36:32,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5003523608174771 [2023-08-30 22:36:32,324 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1420 transitions. [2023-08-30 22:36:32,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1420 transitions. [2023-08-30 22:36:32,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:32,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1420 transitions. [2023-08-30 22:36:32,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 236.66666666666666) internal successors, (1420), 6 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:32,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:32,334 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:32,335 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 173 flow. Second operand 6 states and 1420 transitions. [2023-08-30 22:36:32,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 122 transitions, 526 flow [2023-08-30 22:36:32,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 122 transitions, 526 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 22:36:32,344 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 263 flow [2023-08-30 22:36:32,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2023-08-30 22:36:32,345 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2023-08-30 22:36:32,346 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 263 flow [2023-08-30 22:36:32,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.16666666666666) internal successors, (1321), 6 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:32,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:32,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:32,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 22:36:32,347 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 22:36:32,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:32,348 INFO L85 PathProgramCache]: Analyzing trace with hash -507576723, now seen corresponding path program 2 times [2023-08-30 22:36:32,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:32,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493746570] [2023-08-30 22:36:32,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:32,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:33,041 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 22:36:33,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:33,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493746570] [2023-08-30 22:36:33,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493746570] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:33,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:33,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 22:36:33,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834063724] [2023-08-30 22:36:33,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:33,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 22:36:33,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:33,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 22:36:33,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 22:36:33,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 473 [2023-08-30 22:36:33,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 221.16666666666666) internal successors, (1327), 6 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:33,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:33,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 473 [2023-08-30 22:36:33,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:34,137 INFO L130 PetriNetUnfolder]: 1970/3344 cut-off events. [2023-08-30 22:36:34,137 INFO L131 PetriNetUnfolder]: For 620/620 co-relation queries the response was YES. [2023-08-30 22:36:34,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7238 conditions, 3344 events. 1970/3344 cut-off events. For 620/620 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 16365 event pairs, 834 based on Foata normal form. 17/3012 useless extension candidates. Maximal degree in co-relation 7227. Up to 2536 conditions per place. [2023-08-30 22:36:34,155 INFO L137 encePairwiseOnDemand]: 465/473 looper letters, 100 selfloop transitions, 19 changer transitions 0/127 dead transitions. [2023-08-30 22:36:34,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 127 transitions, 622 flow [2023-08-30 22:36:34,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 22:36:34,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 22:36:34,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1425 transitions. [2023-08-30 22:36:34,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021141649048626 [2023-08-30 22:36:34,160 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1425 transitions. [2023-08-30 22:36:34,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1425 transitions. [2023-08-30 22:36:34,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:34,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1425 transitions. [2023-08-30 22:36:34,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.5) internal successors, (1425), 6 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:34,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:34,170 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:34,170 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 263 flow. Second operand 6 states and 1425 transitions. [2023-08-30 22:36:34,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 127 transitions, 622 flow [2023-08-30 22:36:34,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 127 transitions, 614 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 22:36:34,178 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 342 flow [2023-08-30 22:36:34,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2023-08-30 22:36:34,180 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 19 predicate places. [2023-08-30 22:36:34,181 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 342 flow [2023-08-30 22:36:34,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 221.16666666666666) internal successors, (1327), 6 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:34,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:34,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:34,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 22:36:34,182 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:34,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:34,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1152821177, now seen corresponding path program 3 times [2023-08-30 22:36:34,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:34,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362584815] [2023-08-30 22:36:34,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:34,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:34,788 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 22:36:34,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:34,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362584815] [2023-08-30 22:36:34,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362584815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:34,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:34,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 22:36:34,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306993727] [2023-08-30 22:36:34,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:34,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 22:36:34,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:34,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 22:36:34,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-30 22:36:35,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 473 [2023-08-30 22:36:35,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 342 flow. Second operand has 9 states, 9 states have (on average 207.44444444444446) internal successors, (1867), 9 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:35,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:35,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 473 [2023-08-30 22:36:35,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:36,226 INFO L130 PetriNetUnfolder]: 2695/4564 cut-off events. [2023-08-30 22:36:36,226 INFO L131 PetriNetUnfolder]: For 1308/1308 co-relation queries the response was YES. [2023-08-30 22:36:36,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10132 conditions, 4564 events. 2695/4564 cut-off events. For 1308/1308 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 24051 event pairs, 579 based on Foata normal form. 0/4082 useless extension candidates. Maximal degree in co-relation 10118. Up to 2481 conditions per place. [2023-08-30 22:36:36,285 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 156 selfloop transitions, 25 changer transitions 3/192 dead transitions. [2023-08-30 22:36:36,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 192 transitions, 970 flow [2023-08-30 22:36:36,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 22:36:36,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 22:36:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2027 transitions. [2023-08-30 22:36:36,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47615691801738314 [2023-08-30 22:36:36,294 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2027 transitions. [2023-08-30 22:36:36,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2027 transitions. [2023-08-30 22:36:36,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:36,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2027 transitions. [2023-08-30 22:36:36,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 225.22222222222223) internal successors, (2027), 9 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:36,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:36,307 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:36,307 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 342 flow. Second operand 9 states and 2027 transitions. [2023-08-30 22:36:36,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 192 transitions, 970 flow [2023-08-30 22:36:36,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 192 transitions, 960 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-30 22:36:36,315 INFO L231 Difference]: Finished difference. Result has 94 places, 93 transitions, 455 flow [2023-08-30 22:36:36,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=455, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2023-08-30 22:36:36,316 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 31 predicate places. [2023-08-30 22:36:36,316 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 455 flow [2023-08-30 22:36:36,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 207.44444444444446) internal successors, (1867), 9 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:36,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:36,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:36,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 22:36:36,317 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 22:36:36,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:36,318 INFO L85 PathProgramCache]: Analyzing trace with hash 454650260, now seen corresponding path program 1 times [2023-08-30 22:36:36,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:36,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881318829] [2023-08-30 22:36:36,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:36,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:37,007 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 22:36:37,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:37,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881318829] [2023-08-30 22:36:37,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881318829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:37,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:37,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 22:36:37,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905243920] [2023-08-30 22:36:37,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:37,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 22:36:37,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:37,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 22:36:37,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-30 22:36:37,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 473 [2023-08-30 22:36:37,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 455 flow. Second operand has 10 states, 10 states have (on average 206.3) internal successors, (2063), 10 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states 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 22:36:37,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:37,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 473 [2023-08-30 22:36:37,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:38,333 INFO L130 PetriNetUnfolder]: 2672/4539 cut-off events. [2023-08-30 22:36:38,333 INFO L131 PetriNetUnfolder]: For 2319/2319 co-relation queries the response was YES. [2023-08-30 22:36:38,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10719 conditions, 4539 events. 2672/4539 cut-off events. For 2319/2319 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 23922 event pairs, 1905 based on Foata normal form. 0/4050 useless extension candidates. Maximal degree in co-relation 10700. Up to 4236 conditions per place. [2023-08-30 22:36:38,364 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 88 selfloop transitions, 17 changer transitions 0/113 dead transitions. [2023-08-30 22:36:38,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 113 transitions, 737 flow [2023-08-30 22:36:38,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 22:36:38,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 22:36:38,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1926 transitions. [2023-08-30 22:36:38,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452431289640592 [2023-08-30 22:36:38,370 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1926 transitions. [2023-08-30 22:36:38,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1926 transitions. [2023-08-30 22:36:38,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:38,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1926 transitions. [2023-08-30 22:36:38,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 214.0) internal successors, (1926), 9 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:38,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:38,382 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:38,382 INFO L175 Difference]: Start difference. First operand has 94 places, 93 transitions, 455 flow. Second operand 9 states and 1926 transitions. [2023-08-30 22:36:38,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 113 transitions, 737 flow [2023-08-30 22:36:38,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 113 transitions, 704 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-30 22:36:38,393 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 528 flow [2023-08-30 22:36:38,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=528, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2023-08-30 22:36:38,394 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 40 predicate places. [2023-08-30 22:36:38,394 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 528 flow [2023-08-30 22:36:38,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 206.3) internal successors, (2063), 10 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:38,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:38,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:38,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 22:36:38,396 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:38,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:38,396 INFO L85 PathProgramCache]: Analyzing trace with hash -535562244, now seen corresponding path program 1 times [2023-08-30 22:36:38,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:38,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346065973] [2023-08-30 22:36:38,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:38,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:38,481 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 22:36:38,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:38,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346065973] [2023-08-30 22:36:38,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346065973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:38,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:38,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 22:36:38,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433739477] [2023-08-30 22:36:38,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:38,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 22:36:38,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:38,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 22:36:38,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 22:36:38,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 473 [2023-08-30 22:36:38,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 528 flow. Second operand has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:38,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:38,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 473 [2023-08-30 22:36:38,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:38,845 INFO L130 PetriNetUnfolder]: 1649/2849 cut-off events. [2023-08-30 22:36:38,845 INFO L131 PetriNetUnfolder]: For 699/713 co-relation queries the response was YES. [2023-08-30 22:36:38,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6374 conditions, 2849 events. 1649/2849 cut-off events. For 699/713 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12225 event pairs, 878 based on Foata normal form. 126/2580 useless extension candidates. Maximal degree in co-relation 6350. Up to 1353 conditions per place. [2023-08-30 22:36:38,865 INFO L137 encePairwiseOnDemand]: 469/473 looper letters, 96 selfloop transitions, 3 changer transitions 1/112 dead transitions. [2023-08-30 22:36:38,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 112 transitions, 682 flow [2023-08-30 22:36:38,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 22:36:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 22:36:38,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 800 transitions. [2023-08-30 22:36:38,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637773079633545 [2023-08-30 22:36:38,868 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 800 transitions. [2023-08-30 22:36:38,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 800 transitions. [2023-08-30 22:36:38,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:38,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 800 transitions. [2023-08-30 22:36:38,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:38,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:38,874 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:38,874 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 528 flow. Second operand 3 states and 800 transitions. [2023-08-30 22:36:38,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 112 transitions, 682 flow [2023-08-30 22:36:38,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 112 transitions, 605 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-08-30 22:36:38,880 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 365 flow [2023-08-30 22:36:38,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=365, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2023-08-30 22:36:38,881 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 31 predicate places. [2023-08-30 22:36:38,882 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 365 flow [2023-08-30 22:36:38,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:38,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:38,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:38,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 22:36:38,883 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 22:36:38,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:38,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1966953527, now seen corresponding path program 1 times [2023-08-30 22:36:38,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:38,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351580590] [2023-08-30 22:36:38,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:38,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:39,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:39,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:39,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351580590] [2023-08-30 22:36:39,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351580590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:39,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:39,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 22:36:39,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668772059] [2023-08-30 22:36:39,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:39,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 22:36:39,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:39,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 22:36:39,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-30 22:36:40,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 473 [2023-08-30 22:36:40,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 365 flow. Second operand has 11 states, 11 states have (on average 203.27272727272728) internal successors, (2236), 11 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states 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 22:36:40,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:40,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 473 [2023-08-30 22:36:40,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:41,113 INFO L130 PetriNetUnfolder]: 1644/2906 cut-off events. [2023-08-30 22:36:41,114 INFO L131 PetriNetUnfolder]: For 436/436 co-relation queries the response was YES. [2023-08-30 22:36:41,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6340 conditions, 2906 events. 1644/2906 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12791 event pairs, 533 based on Foata normal form. 9/2528 useless extension candidates. Maximal degree in co-relation 6320. Up to 2003 conditions per place. [2023-08-30 22:36:41,130 INFO L137 encePairwiseOnDemand]: 461/473 looper letters, 95 selfloop transitions, 23 changer transitions 10/137 dead transitions. [2023-08-30 22:36:41,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 137 transitions, 730 flow [2023-08-30 22:36:41,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 22:36:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 22:36:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1934 transitions. [2023-08-30 22:36:41,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45431054733380316 [2023-08-30 22:36:41,135 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1934 transitions. [2023-08-30 22:36:41,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1934 transitions. [2023-08-30 22:36:41,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:41,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1934 transitions. [2023-08-30 22:36:41,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 214.88888888888889) internal successors, (1934), 9 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:41,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:41,147 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:41,148 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 365 flow. Second operand 9 states and 1934 transitions. [2023-08-30 22:36:41,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 137 transitions, 730 flow [2023-08-30 22:36:41,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 137 transitions, 713 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-30 22:36:41,153 INFO L231 Difference]: Finished difference. Result has 97 places, 86 transitions, 417 flow [2023-08-30 22:36:41,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=417, PETRI_PLACES=97, PETRI_TRANSITIONS=86} [2023-08-30 22:36:41,154 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 34 predicate places. [2023-08-30 22:36:41,154 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 86 transitions, 417 flow [2023-08-30 22:36:41,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 203.27272727272728) internal successors, (2236), 11 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states 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 22:36:41,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:41,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:41,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 22:36:41,156 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:41,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:41,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1215939803, now seen corresponding path program 2 times [2023-08-30 22:36:41,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:41,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935149955] [2023-08-30 22:36:41,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:41,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:41,840 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 22:36:41,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:41,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935149955] [2023-08-30 22:36:41,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935149955] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:41,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:41,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 22:36:41,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769153624] [2023-08-30 22:36:41,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:41,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 22:36:41,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:41,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 22:36:41,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-30 22:36:42,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 473 [2023-08-30 22:36:42,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 86 transitions, 417 flow. Second operand has 11 states, 11 states have (on average 203.27272727272728) internal successors, (2236), 11 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states 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 22:36:42,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:42,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 473 [2023-08-30 22:36:42,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:43,468 INFO L130 PetriNetUnfolder]: 1778/3157 cut-off events. [2023-08-30 22:36:43,469 INFO L131 PetriNetUnfolder]: For 694/694 co-relation queries the response was YES. [2023-08-30 22:36:43,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7051 conditions, 3157 events. 1778/3157 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14505 event pairs, 469 based on Foata normal form. 0/2733 useless extension candidates. Maximal degree in co-relation 7031. Up to 1744 conditions per place. [2023-08-30 22:36:43,484 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 100 selfloop transitions, 27 changer transitions 12/148 dead transitions. [2023-08-30 22:36:43,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 148 transitions, 849 flow [2023-08-30 22:36:43,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 22:36:43,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 22:36:43,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1941 transitions. [2023-08-30 22:36:43,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4559548978153629 [2023-08-30 22:36:43,490 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1941 transitions. [2023-08-30 22:36:43,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1941 transitions. [2023-08-30 22:36:43,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:43,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1941 transitions. [2023-08-30 22:36:43,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 215.66666666666666) internal successors, (1941), 9 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:43,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:43,500 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:43,500 INFO L175 Difference]: Start difference. First operand has 97 places, 86 transitions, 417 flow. Second operand 9 states and 1941 transitions. [2023-08-30 22:36:43,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 148 transitions, 849 flow [2023-08-30 22:36:43,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 148 transitions, 808 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-30 22:36:43,506 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 476 flow [2023-08-30 22:36:43,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=476, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2023-08-30 22:36:43,509 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 39 predicate places. [2023-08-30 22:36:43,509 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 476 flow [2023-08-30 22:36:43,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 203.27272727272728) internal successors, (2236), 11 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:43,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:43,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:43,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 22:36:43,510 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:43,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:43,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1213258613, now seen corresponding path program 3 times [2023-08-30 22:36:43,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:43,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850581408] [2023-08-30 22:36:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:43,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:44,108 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 22:36:44,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:44,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850581408] [2023-08-30 22:36:44,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850581408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:44,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:44,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 22:36:44,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231103347] [2023-08-30 22:36:44,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:44,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 22:36:44,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:44,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 22:36:44,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-08-30 22:36:44,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 473 [2023-08-30 22:36:44,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 476 flow. Second operand has 11 states, 11 states have (on average 203.27272727272728) internal successors, (2236), 11 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states 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 22:36:44,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:44,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 473 [2023-08-30 22:36:44,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:45,473 INFO L130 PetriNetUnfolder]: 1791/3168 cut-off events. [2023-08-30 22:36:45,474 INFO L131 PetriNetUnfolder]: For 792/792 co-relation queries the response was YES. [2023-08-30 22:36:45,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7229 conditions, 3168 events. 1791/3168 cut-off events. For 792/792 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 14388 event pairs, 515 based on Foata normal form. 0/2741 useless extension candidates. Maximal degree in co-relation 7207. Up to 1744 conditions per place. [2023-08-30 22:36:45,491 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 94 selfloop transitions, 28 changer transitions 9/140 dead transitions. [2023-08-30 22:36:45,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 140 transitions, 859 flow [2023-08-30 22:36:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 22:36:45,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 22:36:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1930 transitions. [2023-08-30 22:36:45,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45337091848719757 [2023-08-30 22:36:45,497 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1930 transitions. [2023-08-30 22:36:45,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1930 transitions. [2023-08-30 22:36:45,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:45,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1930 transitions. [2023-08-30 22:36:45,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 214.44444444444446) internal successors, (1930), 9 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:45,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:45,508 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:45,508 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 476 flow. Second operand 9 states and 1930 transitions. [2023-08-30 22:36:45,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 140 transitions, 859 flow [2023-08-30 22:36:45,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 140 transitions, 822 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 22:36:45,515 INFO L231 Difference]: Finished difference. Result has 105 places, 90 transitions, 514 flow [2023-08-30 22:36:45,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=514, PETRI_PLACES=105, PETRI_TRANSITIONS=90} [2023-08-30 22:36:45,516 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 42 predicate places. [2023-08-30 22:36:45,516 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 90 transitions, 514 flow [2023-08-30 22:36:45,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 203.27272727272728) internal successors, (2236), 11 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states 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 22:36:45,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:45,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:36:45,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 22:36:45,517 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:45,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:45,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1209251243, now seen corresponding path program 4 times [2023-08-30 22:36:45,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:45,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119852161] [2023-08-30 22:36:45,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:45,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:46,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:36:46,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:46,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119852161] [2023-08-30 22:36:46,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119852161] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:46,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:46,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 22:36:46,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286017723] [2023-08-30 22:36:46,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:46,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 22:36:46,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:46,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 22:36:46,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-30 22:36:46,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 473 [2023-08-30 22:36:46,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 90 transitions, 514 flow. Second operand has 11 states, 11 states have (on average 203.27272727272728) internal successors, (2236), 11 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states 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 22:36:46,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:46,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 473 [2023-08-30 22:36:46,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:47,506 INFO L130 PetriNetUnfolder]: 1778/3137 cut-off events. [2023-08-30 22:36:47,506 INFO L131 PetriNetUnfolder]: For 925/925 co-relation queries the response was YES. [2023-08-30 22:36:47,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7262 conditions, 3137 events. 1778/3137 cut-off events. For 925/925 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14151 event pairs, 504 based on Foata normal form. 0/2721 useless extension candidates. Maximal degree in co-relation 7239. Up to 1744 conditions per place. [2023-08-30 22:36:47,522 INFO L137 encePairwiseOnDemand]: 463/473 looper letters, 92 selfloop transitions, 28 changer transitions 10/138 dead transitions. [2023-08-30 22:36:47,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 138 transitions, 881 flow [2023-08-30 22:36:47,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 22:36:47,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 22:36:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1928 transitions. [2023-08-30 22:36:47,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4529011040638948 [2023-08-30 22:36:47,528 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1928 transitions. [2023-08-30 22:36:47,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1928 transitions. [2023-08-30 22:36:47,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:47,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1928 transitions. [2023-08-30 22:36:47,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 214.22222222222223) internal successors, (1928), 9 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 22:36:47,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:47,538 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:47,538 INFO L175 Difference]: Start difference. First operand has 105 places, 90 transitions, 514 flow. Second operand 9 states and 1928 transitions. [2023-08-30 22:36:47,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 138 transitions, 881 flow [2023-08-30 22:36:47,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 138 transitions, 848 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 22:36:47,546 INFO L231 Difference]: Finished difference. Result has 105 places, 88 transitions, 529 flow [2023-08-30 22:36:47,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=529, PETRI_PLACES=105, PETRI_TRANSITIONS=88} [2023-08-30 22:36:47,547 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 42 predicate places. [2023-08-30 22:36:47,547 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 88 transitions, 529 flow [2023-08-30 22:36:47,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 203.27272727272728) internal successors, (2236), 11 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:47,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:47,548 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 22:36:47,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 22:36:47,548 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 22:36:47,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:47,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1942684503, now seen corresponding path program 1 times [2023-08-30 22:36:47,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:47,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503730030] [2023-08-30 22:36:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:47,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:47,626 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 22:36:47,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:47,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503730030] [2023-08-30 22:36:47,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503730030] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:47,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:47,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 22:36:47,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916841508] [2023-08-30 22:36:47,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:47,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 22:36:47,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:47,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 22:36:47,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 22:36:47,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 473 [2023-08-30 22:36:47,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 88 transitions, 529 flow. Second operand has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:47,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:47,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 473 [2023-08-30 22:36:47,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:47,853 INFO L130 PetriNetUnfolder]: 1119/2092 cut-off events. [2023-08-30 22:36:47,853 INFO L131 PetriNetUnfolder]: For 919/919 co-relation queries the response was YES. [2023-08-30 22:36:47,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5165 conditions, 2092 events. 1119/2092 cut-off events. For 919/919 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9421 event pairs, 278 based on Foata normal form. 2/1928 useless extension candidates. Maximal degree in co-relation 5142. Up to 1502 conditions per place. [2023-08-30 22:36:47,864 INFO L137 encePairwiseOnDemand]: 467/473 looper letters, 80 selfloop transitions, 6 changer transitions 1/100 dead transitions. [2023-08-30 22:36:47,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 100 transitions, 743 flow [2023-08-30 22:36:47,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 22:36:47,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 22:36:47,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 775 transitions. [2023-08-30 22:36:47,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461592670894997 [2023-08-30 22:36:47,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 775 transitions. [2023-08-30 22:36:47,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 775 transitions. [2023-08-30 22:36:47,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:47,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 775 transitions. [2023-08-30 22:36:47,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:47,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:47,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:47,871 INFO L175 Difference]: Start difference. First operand has 105 places, 88 transitions, 529 flow. Second operand 3 states and 775 transitions. [2023-08-30 22:36:47,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 100 transitions, 743 flow [2023-08-30 22:36:47,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 685 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-30 22:36:47,877 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 483 flow [2023-08-30 22:36:47,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=483, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2023-08-30 22:36:47,878 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 36 predicate places. [2023-08-30 22:36:47,878 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 483 flow [2023-08-30 22:36:47,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:47,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:47,879 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 22:36:47,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 22:36:47,879 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 22:36:47,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:47,880 INFO L85 PathProgramCache]: Analyzing trace with hash 272642884, now seen corresponding path program 1 times [2023-08-30 22:36:47,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:47,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919504406] [2023-08-30 22:36:47,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:47,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:48,859 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 22:36:48,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:48,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919504406] [2023-08-30 22:36:48,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919504406] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:48,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:48,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 22:36:48,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559036458] [2023-08-30 22:36:48,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:48,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 22:36:48,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:48,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 22:36:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-30 22:36:49,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 473 [2023-08-30 22:36:49,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 483 flow. Second operand has 13 states, 13 states have (on average 211.69230769230768) internal successors, (2752), 13 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:49,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:49,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 473 [2023-08-30 22:36:49,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:50,223 INFO L130 PetriNetUnfolder]: 1155/2163 cut-off events. [2023-08-30 22:36:50,223 INFO L131 PetriNetUnfolder]: For 778/780 co-relation queries the response was YES. [2023-08-30 22:36:50,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5325 conditions, 2163 events. 1155/2163 cut-off events. For 778/780 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9844 event pairs, 500 based on Foata normal form. 0/2080 useless extension candidates. Maximal degree in co-relation 5302. Up to 1247 conditions per place. [2023-08-30 22:36:50,234 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 108 selfloop transitions, 31 changer transitions 12/159 dead transitions. [2023-08-30 22:36:50,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 159 transitions, 976 flow [2023-08-30 22:36:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 22:36:50,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 22:36:50,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2641 transitions. [2023-08-30 22:36:50,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465292459478506 [2023-08-30 22:36:50,242 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2641 transitions. [2023-08-30 22:36:50,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2641 transitions. [2023-08-30 22:36:50,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:50,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2641 transitions. [2023-08-30 22:36:50,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 220.08333333333334) internal successors, (2641), 12 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states 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 22:36:50,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 473.0) internal successors, (6149), 13 states have internal predecessors, (6149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:50,254 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 473.0) internal successors, (6149), 13 states have internal predecessors, (6149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:50,254 INFO L175 Difference]: Start difference. First operand has 99 places, 88 transitions, 483 flow. Second operand 12 states and 2641 transitions. [2023-08-30 22:36:50,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 159 transitions, 976 flow [2023-08-30 22:36:50,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 159 transitions, 966 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 22:36:50,261 INFO L231 Difference]: Finished difference. Result has 113 places, 97 transitions, 618 flow [2023-08-30 22:36:50,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=618, PETRI_PLACES=113, PETRI_TRANSITIONS=97} [2023-08-30 22:36:50,262 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 50 predicate places. [2023-08-30 22:36:50,262 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 97 transitions, 618 flow [2023-08-30 22:36:50,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 211.69230769230768) internal successors, (2752), 13 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:50,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:50,263 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 22:36:50,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 22:36:50,263 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 22:36:50,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:50,264 INFO L85 PathProgramCache]: Analyzing trace with hash -54871982, now seen corresponding path program 2 times [2023-08-30 22:36:50,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:50,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090221027] [2023-08-30 22:36:50,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:50,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:52,087 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 22:36:52,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:52,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090221027] [2023-08-30 22:36:52,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090221027] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:52,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:52,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-08-30 22:36:52,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443128079] [2023-08-30 22:36:52,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:52,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 22:36:52,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:52,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 22:36:52,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-08-30 22:36:53,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 473 [2023-08-30 22:36:53,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 97 transitions, 618 flow. Second operand has 17 states, 17 states have (on average 209.05882352941177) internal successors, (3554), 17 states have internal predecessors, (3554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:53,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:53,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 473 [2023-08-30 22:36:53,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:54,087 INFO L130 PetriNetUnfolder]: 1687/3169 cut-off events. [2023-08-30 22:36:54,087 INFO L131 PetriNetUnfolder]: For 1108/1112 co-relation queries the response was YES. [2023-08-30 22:36:54,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7916 conditions, 3169 events. 1687/3169 cut-off events. For 1108/1112 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 15702 event pairs, 284 based on Foata normal form. 0/3083 useless extension candidates. Maximal degree in co-relation 7889. Up to 1008 conditions per place. [2023-08-30 22:36:54,104 INFO L137 encePairwiseOnDemand]: 458/473 looper letters, 155 selfloop transitions, 31 changer transitions 7/201 dead transitions. [2023-08-30 22:36:54,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 201 transitions, 1283 flow [2023-08-30 22:36:54,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 22:36:54,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 22:36:54,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2854 transitions. [2023-08-30 22:36:54,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46414051065213857 [2023-08-30 22:36:54,111 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2854 transitions. [2023-08-30 22:36:54,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2854 transitions. [2023-08-30 22:36:54,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:54,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2854 transitions. [2023-08-30 22:36:54,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 219.53846153846155) internal successors, (2854), 13 states have internal predecessors, (2854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:54,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:54,125 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:54,125 INFO L175 Difference]: Start difference. First operand has 113 places, 97 transitions, 618 flow. Second operand 13 states and 2854 transitions. [2023-08-30 22:36:54,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 201 transitions, 1283 flow [2023-08-30 22:36:54,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 201 transitions, 1224 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-08-30 22:36:54,135 INFO L231 Difference]: Finished difference. Result has 123 places, 107 transitions, 707 flow [2023-08-30 22:36:54,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=707, PETRI_PLACES=123, PETRI_TRANSITIONS=107} [2023-08-30 22:36:54,135 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 60 predicate places. [2023-08-30 22:36:54,136 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 107 transitions, 707 flow [2023-08-30 22:36:54,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 209.05882352941177) internal successors, (3554), 17 states have internal predecessors, (3554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:54,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:54,137 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 22:36:54,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 22:36:54,137 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:54,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:54,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1056373008, now seen corresponding path program 1 times [2023-08-30 22:36:54,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:54,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217835936] [2023-08-30 22:36:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:54,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:55,113 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 22:36:55,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:55,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217835936] [2023-08-30 22:36:55,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217835936] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:55,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:55,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 22:36:55,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376713254] [2023-08-30 22:36:55,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:55,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 22:36:55,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:55,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 22:36:55,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-30 22:36:55,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 473 [2023-08-30 22:36:55,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 107 transitions, 707 flow. Second operand has 14 states, 14 states have (on average 207.57142857142858) internal successors, (2906), 14 states have internal predecessors, (2906), 0 states have call successors, (0), 0 states 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 22:36:55,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:55,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 473 [2023-08-30 22:36:55,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:56,620 INFO L130 PetriNetUnfolder]: 1701/3222 cut-off events. [2023-08-30 22:36:56,620 INFO L131 PetriNetUnfolder]: For 1780/1780 co-relation queries the response was YES. [2023-08-30 22:36:56,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8450 conditions, 3222 events. 1701/3222 cut-off events. For 1780/1780 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 16132 event pairs, 382 based on Foata normal form. 9/3156 useless extension candidates. Maximal degree in co-relation 8418. Up to 1578 conditions per place. [2023-08-30 22:36:56,637 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 118 selfloop transitions, 37 changer transitions 13/176 dead transitions. [2023-08-30 22:36:56,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 176 transitions, 1228 flow [2023-08-30 22:36:56,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 22:36:56,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 22:36:56,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2800 transitions. [2023-08-30 22:36:56,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535859489347863 [2023-08-30 22:36:56,642 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2800 transitions. [2023-08-30 22:36:56,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2800 transitions. [2023-08-30 22:36:56,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:56,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2800 transitions. [2023-08-30 22:36:56,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 215.3846153846154) internal successors, (2800), 13 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states 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 22:36:56,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:56,654 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:56,654 INFO L175 Difference]: Start difference. First operand has 123 places, 107 transitions, 707 flow. Second operand 13 states and 2800 transitions. [2023-08-30 22:36:56,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 176 transitions, 1228 flow [2023-08-30 22:36:56,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 176 transitions, 1187 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-30 22:36:56,667 INFO L231 Difference]: Finished difference. Result has 133 places, 111 transitions, 809 flow [2023-08-30 22:36:56,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=809, PETRI_PLACES=133, PETRI_TRANSITIONS=111} [2023-08-30 22:36:56,667 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 70 predicate places. [2023-08-30 22:36:56,668 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 111 transitions, 809 flow [2023-08-30 22:36:56,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 207.57142857142858) internal successors, (2906), 14 states have internal predecessors, (2906), 0 states have call successors, (0), 0 states 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 22:36:56,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:56,668 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 22:36:56,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 22:36:56,669 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 22:36:56,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:56,669 INFO L85 PathProgramCache]: Analyzing trace with hash -785537338, now seen corresponding path program 2 times [2023-08-30 22:36:56,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:56,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480865645] [2023-08-30 22:36:56,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:56,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:57,530 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 22:36:57,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:57,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480865645] [2023-08-30 22:36:57,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480865645] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:57,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:57,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 22:36:57,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480901822] [2023-08-30 22:36:57,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:57,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 22:36:57,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:57,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 22:36:57,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-30 22:36:58,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 473 [2023-08-30 22:36:58,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 111 transitions, 809 flow. Second operand has 14 states, 14 states have (on average 211.57142857142858) internal successors, (2962), 14 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states 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 22:36:58,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:36:58,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 473 [2023-08-30 22:36:58,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:36:58,821 INFO L130 PetriNetUnfolder]: 1717/3252 cut-off events. [2023-08-30 22:36:58,821 INFO L131 PetriNetUnfolder]: For 3000/3000 co-relation queries the response was YES. [2023-08-30 22:36:58,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8994 conditions, 3252 events. 1717/3252 cut-off events. For 3000/3000 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 16403 event pairs, 434 based on Foata normal form. 7/3184 useless extension candidates. Maximal degree in co-relation 8958. Up to 1555 conditions per place. [2023-08-30 22:36:58,834 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 121 selfloop transitions, 36 changer transitions 13/178 dead transitions. [2023-08-30 22:36:58,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 178 transitions, 1325 flow [2023-08-30 22:36:58,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 22:36:58,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 22:36:58,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2851 transitions. [2023-08-30 22:36:58,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636526264433241 [2023-08-30 22:36:58,839 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2851 transitions. [2023-08-30 22:36:58,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2851 transitions. [2023-08-30 22:36:58,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:36:58,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2851 transitions. [2023-08-30 22:36:58,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 219.30769230769232) internal successors, (2851), 13 states have internal predecessors, (2851), 0 states have call successors, (0), 0 states 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 22:36:58,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:58,848 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:36:58,848 INFO L175 Difference]: Start difference. First operand has 133 places, 111 transitions, 809 flow. Second operand 13 states and 2851 transitions. [2023-08-30 22:36:58,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 178 transitions, 1325 flow [2023-08-30 22:36:58,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 178 transitions, 1261 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-30 22:36:58,862 INFO L231 Difference]: Finished difference. Result has 139 places, 113 transitions, 867 flow [2023-08-30 22:36:58,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=867, PETRI_PLACES=139, PETRI_TRANSITIONS=113} [2023-08-30 22:36:58,863 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 76 predicate places. [2023-08-30 22:36:58,863 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 113 transitions, 867 flow [2023-08-30 22:36:58,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 211.57142857142858) internal successors, (2962), 14 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states 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 22:36:58,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:36:58,864 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 22:36:58,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 22:36:58,865 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:36:58,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:36:58,865 INFO L85 PathProgramCache]: Analyzing trace with hash -224439540, now seen corresponding path program 3 times [2023-08-30 22:36:58,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:36:58,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710514823] [2023-08-30 22:36:58,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:36:58,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:36:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:36:59,979 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 22:36:59,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:36:59,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710514823] [2023-08-30 22:36:59,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710514823] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:36:59,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:36:59,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 22:36:59,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835713515] [2023-08-30 22:36:59,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:36:59,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 22:36:59,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:36:59,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 22:36:59,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-08-30 22:37:00,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 473 [2023-08-30 22:37:00,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 113 transitions, 867 flow. Second operand has 14 states, 14 states have (on average 211.57142857142858) internal successors, (2962), 14 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states 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 22:37:00,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:37:00,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 473 [2023-08-30 22:37:00,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:37:01,368 INFO L130 PetriNetUnfolder]: 1423/2670 cut-off events. [2023-08-30 22:37:01,368 INFO L131 PetriNetUnfolder]: For 3329/3334 co-relation queries the response was YES. [2023-08-30 22:37:01,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7684 conditions, 2670 events. 1423/2670 cut-off events. For 3329/3334 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12562 event pairs, 405 based on Foata normal form. 7/2607 useless extension candidates. Maximal degree in co-relation 7646. Up to 1091 conditions per place. [2023-08-30 22:37:01,382 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 121 selfloop transitions, 36 changer transitions 13/178 dead transitions. [2023-08-30 22:37:01,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 178 transitions, 1362 flow [2023-08-30 22:37:01,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 22:37:01,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 22:37:01,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2854 transitions. [2023-08-30 22:37:01,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46414051065213857 [2023-08-30 22:37:01,387 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2854 transitions. [2023-08-30 22:37:01,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2854 transitions. [2023-08-30 22:37:01,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:37:01,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2854 transitions. [2023-08-30 22:37:01,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 219.53846153846155) internal successors, (2854), 13 states have internal predecessors, (2854), 0 states have call successors, (0), 0 states 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 22:37:01,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:01,396 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:01,396 INFO L175 Difference]: Start difference. First operand has 139 places, 113 transitions, 867 flow. Second operand 13 states and 2854 transitions. [2023-08-30 22:37:01,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 178 transitions, 1362 flow [2023-08-30 22:37:01,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 178 transitions, 1274 flow, removed 2 selfloop flow, removed 13 redundant places. [2023-08-30 22:37:01,412 INFO L231 Difference]: Finished difference. Result has 140 places, 111 transitions, 870 flow [2023-08-30 22:37:01,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=870, PETRI_PLACES=140, PETRI_TRANSITIONS=111} [2023-08-30 22:37:01,413 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 77 predicate places. [2023-08-30 22:37:01,413 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 111 transitions, 870 flow [2023-08-30 22:37:01,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 211.57142857142858) internal successors, (2962), 14 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states 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 22:37:01,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:37:01,414 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 22:37:01,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 22:37:01,414 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:37:01,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:37:01,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1236496857, now seen corresponding path program 1 times [2023-08-30 22:37:01,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:37:01,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439612944] [2023-08-30 22:37:01,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:37:01,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:37:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:37:03,244 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 22:37:03,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:37:03,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439612944] [2023-08-30 22:37:03,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439612944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:37:03,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:37:03,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-08-30 22:37:03,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373121319] [2023-08-30 22:37:03,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:37:03,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 22:37:03,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:37:03,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 22:37:03,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-08-30 22:37:04,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 473 [2023-08-30 22:37:04,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 111 transitions, 870 flow. Second operand has 18 states, 18 states have (on average 203.0) internal successors, (3654), 18 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 22:37:04,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:37:04,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 473 [2023-08-30 22:37:04,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:37:05,084 INFO L130 PetriNetUnfolder]: 1589/2991 cut-off events. [2023-08-30 22:37:05,084 INFO L131 PetriNetUnfolder]: For 3696/3701 co-relation queries the response was YES. [2023-08-30 22:37:05,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8457 conditions, 2991 events. 1589/2991 cut-off events. For 3696/3701 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14197 event pairs, 302 based on Foata normal form. 8/2920 useless extension candidates. Maximal degree in co-relation 8419. Up to 861 conditions per place. [2023-08-30 22:37:05,095 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 144 selfloop transitions, 34 changer transitions 10/196 dead transitions. [2023-08-30 22:37:05,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 196 transitions, 1455 flow [2023-08-30 22:37:05,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 22:37:05,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 22:37:05,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2764 transitions. [2023-08-30 22:37:05,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44950398438770534 [2023-08-30 22:37:05,106 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2764 transitions. [2023-08-30 22:37:05,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2764 transitions. [2023-08-30 22:37:05,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:37:05,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2764 transitions. [2023-08-30 22:37:05,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 212.6153846153846) internal successors, (2764), 13 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states 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 22:37:05,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:05,117 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:37:05,117 INFO L175 Difference]: Start difference. First operand has 140 places, 111 transitions, 870 flow. Second operand 13 states and 2764 transitions. [2023-08-30 22:37:05,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 196 transitions, 1455 flow [2023-08-30 22:37:05,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 196 transitions, 1377 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-08-30 22:37:05,135 INFO L231 Difference]: Finished difference. Result has 144 places, 116 transitions, 906 flow [2023-08-30 22:37:05,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=906, PETRI_PLACES=144, PETRI_TRANSITIONS=116} [2023-08-30 22:37:05,136 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 81 predicate places. [2023-08-30 22:37:05,136 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 116 transitions, 906 flow [2023-08-30 22:37:05,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 203.0) internal successors, (3654), 18 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 22:37:05,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:37:05,137 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 22:37:05,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 22:37:05,137 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:37:05,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:37:05,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1142379959, now seen corresponding path program 1 times [2023-08-30 22:37:05,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:37:05,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240119788] [2023-08-30 22:37:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:37:05,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:37:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:37:07,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:37:07,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:37:07,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240119788] [2023-08-30 22:37:07,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240119788] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:37:07,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:37:07,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-08-30 22:37:07,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155908402] [2023-08-30 22:37:07,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:37:07,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-30 22:37:07,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:37:07,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-30 22:37:07,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2023-08-30 22:37:11,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 473 [2023-08-30 22:37:11,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 116 transitions, 906 flow. Second operand has 23 states, 23 states have (on average 182.6086956521739) internal successors, (4200), 23 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states 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 22:37:11,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:37:11,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 473 [2023-08-30 22:37:11,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:37:13,358 INFO L130 PetriNetUnfolder]: 1890/3589 cut-off events. [2023-08-30 22:37:13,359 INFO L131 PetriNetUnfolder]: For 4289/4295 co-relation queries the response was YES. [2023-08-30 22:37:13,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10272 conditions, 3589 events. 1890/3589 cut-off events. For 4289/4295 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18092 event pairs, 750 based on Foata normal form. 82/3580 useless extension candidates. Maximal degree in co-relation 10231. Up to 2761 conditions per place. [2023-08-30 22:37:13,372 INFO L137 encePairwiseOnDemand]: 446/473 looper letters, 176 selfloop transitions, 57 changer transitions 32/273 dead transitions. [2023-08-30 22:37:13,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 273 transitions, 2034 flow [2023-08-30 22:37:13,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 22:37:13,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 22:37:13,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6017 transitions. [2023-08-30 22:37:13,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39752906976744184 [2023-08-30 22:37:13,388 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6017 transitions. [2023-08-30 22:37:13,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6017 transitions. [2023-08-30 22:37:13,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:37:13,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6017 transitions. [2023-08-30 22:37:13,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 188.03125) internal successors, (6017), 32 states have internal predecessors, (6017), 0 states have call successors, (0), 0 states 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 22:37:13,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 473.0) internal successors, (15609), 33 states have internal predecessors, (15609), 0 states have call successors, (0), 0 states 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 22:37:13,410 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 473.0) internal successors, (15609), 33 states have internal predecessors, (15609), 0 states have call successors, (0), 0 states 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 22:37:13,411 INFO L175 Difference]: Start difference. First operand has 144 places, 116 transitions, 906 flow. Second operand 32 states and 6017 transitions. [2023-08-30 22:37:13,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 273 transitions, 2034 flow [2023-08-30 22:37:13,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 273 transitions, 1949 flow, removed 1 selfloop flow, removed 9 redundant places. [2023-08-30 22:37:13,433 INFO L231 Difference]: Finished difference. Result has 192 places, 171 transitions, 1437 flow [2023-08-30 22:37:13,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1437, PETRI_PLACES=192, PETRI_TRANSITIONS=171} [2023-08-30 22:37:13,433 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 129 predicate places. [2023-08-30 22:37:13,434 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 171 transitions, 1437 flow [2023-08-30 22:37:13,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 182.6086956521739) internal successors, (4200), 23 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states 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 22:37:13,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:37:13,435 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 22:37:13,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 22:37:13,435 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:37:13,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:37:13,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1972154307, now seen corresponding path program 2 times [2023-08-30 22:37:13,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:37:13,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451358073] [2023-08-30 22:37:13,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:37:13,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:37:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:37:16,491 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 22:37:16,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:37:16,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451358073] [2023-08-30 22:37:16,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451358073] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:37:16,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:37:16,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-08-30 22:37:16,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205685975] [2023-08-30 22:37:16,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:37:16,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-30 22:37:16,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:37:16,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-30 22:37:16,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2023-08-30 22:37:19,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 473 [2023-08-30 22:37:19,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 171 transitions, 1437 flow. Second operand has 23 states, 23 states have (on average 182.6086956521739) internal successors, (4200), 23 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states 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 22:37:19,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:37:19,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 473 [2023-08-30 22:37:19,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:37:22,632 INFO L130 PetriNetUnfolder]: 2111/4050 cut-off events. [2023-08-30 22:37:22,632 INFO L131 PetriNetUnfolder]: For 53559/53565 co-relation queries the response was YES. [2023-08-30 22:37:22,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18669 conditions, 4050 events. 2111/4050 cut-off events. For 53559/53565 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 21493 event pairs, 650 based on Foata normal form. 86/4120 useless extension candidates. Maximal degree in co-relation 18602. Up to 3128 conditions per place. [2023-08-30 22:37:22,657 INFO L137 encePairwiseOnDemand]: 446/473 looper letters, 223 selfloop transitions, 58 changer transitions 33/322 dead transitions. [2023-08-30 22:37:22,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 322 transitions, 3052 flow [2023-08-30 22:37:22,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 22:37:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 22:37:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6006 transitions. [2023-08-30 22:37:22,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39680232558139533 [2023-08-30 22:37:22,665 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6006 transitions. [2023-08-30 22:37:22,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6006 transitions. [2023-08-30 22:37:22,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:37:22,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6006 transitions. [2023-08-30 22:37:22,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 187.6875) internal successors, (6006), 32 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states 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 22:37:22,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 473.0) internal successors, (15609), 33 states have internal predecessors, (15609), 0 states have call successors, (0), 0 states 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 22:37:22,686 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 473.0) internal successors, (15609), 33 states have internal predecessors, (15609), 0 states have call successors, (0), 0 states 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 22:37:22,686 INFO L175 Difference]: Start difference. First operand has 192 places, 171 transitions, 1437 flow. Second operand 32 states and 6006 transitions. [2023-08-30 22:37:22,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 322 transitions, 3052 flow [2023-08-30 22:37:22,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 322 transitions, 3034 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-30 22:37:22,847 INFO L231 Difference]: Finished difference. Result has 245 places, 220 transitions, 2179 flow [2023-08-30 22:37:22,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2179, PETRI_PLACES=245, PETRI_TRANSITIONS=220} [2023-08-30 22:37:22,848 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 182 predicate places. [2023-08-30 22:37:22,848 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 220 transitions, 2179 flow [2023-08-30 22:37:22,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 182.6086956521739) internal successors, (4200), 23 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states 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 22:37:22,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:37:22,850 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 22:37:22,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 22:37:22,850 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:37:22,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:37:22,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1706648059, now seen corresponding path program 3 times [2023-08-30 22:37:22,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:37:22,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920095506] [2023-08-30 22:37:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:37:22,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:37:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:37:25,094 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 22:37:25,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:37:25,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920095506] [2023-08-30 22:37:25,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920095506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:37:25,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:37:25,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-08-30 22:37:25,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086940967] [2023-08-30 22:37:25,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:37:25,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-30 22:37:25,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:37:25,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-30 22:37:25,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2023-08-30 22:37:28,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 473 [2023-08-30 22:37:28,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 220 transitions, 2179 flow. Second operand has 23 states, 23 states have (on average 182.6086956521739) internal successors, (4200), 23 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states 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 22:37:28,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:37:28,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 473 [2023-08-30 22:37:28,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:37:30,918 INFO L130 PetriNetUnfolder]: 2319/4474 cut-off events. [2023-08-30 22:37:30,918 INFO L131 PetriNetUnfolder]: For 184733/184751 co-relation queries the response was YES. [2023-08-30 22:37:30,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27207 conditions, 4474 events. 2319/4474 cut-off events. For 184733/184751 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 24650 event pairs, 742 based on Foata normal form. 92/4549 useless extension candidates. Maximal degree in co-relation 27113. Up to 3321 conditions per place. [2023-08-30 22:37:30,948 INFO L137 encePairwiseOnDemand]: 447/473 looper letters, 257 selfloop transitions, 71 changer transitions 35/371 dead transitions. [2023-08-30 22:37:30,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 371 transitions, 4400 flow [2023-08-30 22:37:30,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-30 22:37:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-30 22:37:30,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 6195 transitions. [2023-08-30 22:37:30,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39688641168556604 [2023-08-30 22:37:30,956 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 6195 transitions. [2023-08-30 22:37:30,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 6195 transitions. [2023-08-30 22:37:30,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:37:30,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 6195 transitions. [2023-08-30 22:37:30,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 187.72727272727272) internal successors, (6195), 33 states have internal predecessors, (6195), 0 states have call successors, (0), 0 states 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 22:37:30,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 473.0) internal successors, (16082), 34 states have internal predecessors, (16082), 0 states have call successors, (0), 0 states 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 22:37:30,977 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 473.0) internal successors, (16082), 34 states have internal predecessors, (16082), 0 states have call successors, (0), 0 states 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 22:37:30,977 INFO L175 Difference]: Start difference. First operand has 245 places, 220 transitions, 2179 flow. Second operand 33 states and 6195 transitions. [2023-08-30 22:37:30,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 371 transitions, 4400 flow [2023-08-30 22:37:31,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 371 transitions, 4230 flow, removed 85 selfloop flow, removed 0 redundant places. [2023-08-30 22:37:31,198 INFO L231 Difference]: Finished difference. Result has 296 places, 266 transitions, 2907 flow [2023-08-30 22:37:31,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=2009, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2907, PETRI_PLACES=296, PETRI_TRANSITIONS=266} [2023-08-30 22:37:31,198 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 233 predicate places. [2023-08-30 22:37:31,199 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 266 transitions, 2907 flow [2023-08-30 22:37:31,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 182.6086956521739) internal successors, (4200), 23 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states 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 22:37:31,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:37:31,200 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 22:37:31,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 22:37:31,200 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:37:31,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:37:31,201 INFO L85 PathProgramCache]: Analyzing trace with hash 963217069, now seen corresponding path program 4 times [2023-08-30 22:37:31,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:37:31,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262607362] [2023-08-30 22:37:31,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:37:31,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:37:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15