./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/weaver/chl-node-subst.wvr.c -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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 18:59:15,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 18:59:15,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 18:59:15,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 18:59:15,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 18:59:15,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 18:59:15,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 18:59:15,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 18:59:15,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 18:59:15,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 18:59:15,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 18:59:15,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 18:59:15,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 18:59:15,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 18:59:15,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 18:59:15,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 18:59:15,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 18:59:15,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 18:59:15,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 18:59:15,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 18:59:15,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 18:59:15,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 18:59:15,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 18:59:15,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 18:59:15,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 18:59:15,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 18:59:15,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 18:59:15,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 18:59:15,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 18:59:15,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 18:59:15,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 18:59:15,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 18:59:15,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 18:59:15,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 18:59:15,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 18:59:15,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 18:59:15,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 18:59:15,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 18:59:15,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 18:59:15,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 18:59:15,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 18:59:15,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 18:59:15,749 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 18:59:15,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 18:59:15,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 18:59:15,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 18:59:15,751 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 18:59:15,752 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 18:59:15,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 18:59:15,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 18:59:15,752 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 18:59:15,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 18:59:15,753 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 18:59:15,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 18:59:15,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 18:59:15,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 18:59:15,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 18:59:15,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 18:59:15,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 18:59:15,754 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 18:59:15,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 18:59:15,755 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 18:59:15,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 18:59:15,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 18:59:15,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 18:59:15,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 18:59:15,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:59:15,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 18:59:15,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 18:59:15,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 18:59:15,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 18:59:15,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 18:59:15,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 18:59:15,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 18:59:15,757 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 18:59:15,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 18:59:15,757 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 18:59:15,757 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 18:59:16,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 18:59:16,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 18:59:16,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 18:59:16,039 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 18:59:16,039 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 18:59:16,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-08-30 18:59:17,032 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 18:59:17,346 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 18:59:17,346 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-08-30 18:59:17,375 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1af5e5ad/7ec546bef18b4163b8313290c076d2d8/FLAG84dc2964f [2023-08-30 18:59:17,387 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1af5e5ad/7ec546bef18b4163b8313290c076d2d8 [2023-08-30 18:59:17,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 18:59:17,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 18:59:17,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 18:59:17,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 18:59:17,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 18:59:17,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:59:17" (1/1) ... [2023-08-30 18:59:17,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10333897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:17, skipping insertion in model container [2023-08-30 18:59:17,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:59:17" (1/1) ... [2023-08-30 18:59:17,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 18:59:17,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 18:59:17,672 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[3996,4009] [2023-08-30 18:59:17,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:59:17,698 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 18:59:17,759 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[3996,4009] [2023-08-30 18:59:17,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:59:17,788 INFO L208 MainTranslator]: Completed translation [2023-08-30 18:59:17,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:17 WrapperNode [2023-08-30 18:59:17,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 18:59:17,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 18:59:17,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 18:59:17,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 18:59:17,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:17" (1/1) ... [2023-08-30 18:59:17,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:17" (1/1) ... [2023-08-30 18:59:17,850 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 431 [2023-08-30 18:59:17,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 18:59:17,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 18:59:17,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 18:59:17,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 18:59:17,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:17" (1/1) ... [2023-08-30 18:59:17,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:17" (1/1) ... [2023-08-30 18:59:17,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:17" (1/1) ... [2023-08-30 18:59:17,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:17" (1/1) ... [2023-08-30 18:59:17,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:17" (1/1) ... [2023-08-30 18:59:17,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:17" (1/1) ... [2023-08-30 18:59:17,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:17" (1/1) ... [2023-08-30 18:59:17,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:17" (1/1) ... [2023-08-30 18:59:17,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 18:59:17,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 18:59:17,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 18:59:17,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 18:59:17,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:17" (1/1) ... [2023-08-30 18:59:17,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:59:17,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:59:17,944 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 18:59:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 18:59:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 18:59:17,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 18:59:17,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 18:59:17,969 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 18:59:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 18:59:17,969 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 18:59:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 18:59:17,969 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 18:59:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 18:59:17,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 18:59:17,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 18:59:17,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 18:59:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 18:59:17,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 18:59:17,971 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 18:59:17,963 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 18:59:18,065 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 18:59:18,081 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 18:59:18,470 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 18:59:18,480 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 18:59:18,480 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 18:59:18,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:59:18 BoogieIcfgContainer [2023-08-30 18:59:18,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 18:59:18,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 18:59:18,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 18:59:18,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 18:59:18,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:59:17" (1/3) ... [2023-08-30 18:59:18,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c317f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:59:18, skipping insertion in model container [2023-08-30 18:59:18,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:17" (2/3) ... [2023-08-30 18:59:18,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c317f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:59:18, skipping insertion in model container [2023-08-30 18:59:18,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:59:18" (3/3) ... [2023-08-30 18:59:18,488 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2023-08-30 18:59:18,493 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 18:59:18,499 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 18:59:18,499 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 18:59:18,499 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 18:59:18,590 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 18:59:18,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 470 places, 501 transitions, 1026 flow [2023-08-30 18:59:18,774 INFO L130 PetriNetUnfolder]: 41/498 cut-off events. [2023-08-30 18:59:18,775 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 18:59:18,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 498 events. 41/498 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 643 event pairs, 0 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-08-30 18:59:18,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 470 places, 501 transitions, 1026 flow [2023-08-30 18:59:18,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 457 places, 488 transitions, 994 flow [2023-08-30 18:59:18,795 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 18:59:18,802 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 457 places, 488 transitions, 994 flow [2023-08-30 18:59:18,804 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 457 places, 488 transitions, 994 flow [2023-08-30 18:59:18,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 457 places, 488 transitions, 994 flow [2023-08-30 18:59:18,881 INFO L130 PetriNetUnfolder]: 41/488 cut-off events. [2023-08-30 18:59:18,881 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 18:59:18,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 488 events. 41/488 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 642 event pairs, 0 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-08-30 18:59:18,891 INFO L119 LiptonReduction]: Number of co-enabled transitions 17280 [2023-08-30 18:59:31,073 INFO L134 LiptonReduction]: Checked pairs total: 21051 [2023-08-30 18:59:31,074 INFO L136 LiptonReduction]: Total number of compositions: 563 [2023-08-30 18:59:31,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 18:59:31,117 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;@1af27e14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 18:59:31,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 18:59:31,124 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2023-08-30 18:59:31,124 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 18:59:31,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:31,125 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] [2023-08-30 18:59:31,126 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 1 more)] === [2023-08-30 18:59:31,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:31,129 INFO L85 PathProgramCache]: Analyzing trace with hash -496890906, now seen corresponding path program 1 times [2023-08-30 18:59:31,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:31,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153007694] [2023-08-30 18:59:31,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:31,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:31,421 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 18:59:31,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:31,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153007694] [2023-08-30 18:59:31,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153007694] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:31,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:31,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 18:59:31,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850416051] [2023-08-30 18:59:31,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:31,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 18:59:31,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:31,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 18:59:31,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 18:59:31,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 465 out of 1064 [2023-08-30 18:59:31,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:31,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:31,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 465 of 1064 [2023-08-30 18:59:31,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:31,602 INFO L130 PetriNetUnfolder]: 699/1048 cut-off events. [2023-08-30 18:59:31,602 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-08-30 18:59:31,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 1048 events. 699/1048 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3691 event pairs, 557 based on Foata normal form. 0/906 useless extension candidates. Maximal degree in co-relation 2016. Up to 1049 conditions per place. [2023-08-30 18:59:31,606 INFO L137 encePairwiseOnDemand]: 1063/1064 looper letters, 41 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2023-08-30 18:59:31,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 182 flow [2023-08-30 18:59:31,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 18:59:31,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 18:59:31,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 972 transitions. [2023-08-30 18:59:31,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567669172932331 [2023-08-30 18:59:31,619 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 972 transitions. [2023-08-30 18:59:31,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 972 transitions. [2023-08-30 18:59:31,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:31,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 972 transitions. [2023-08-30 18:59:31,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 486.0) internal successors, (972), 2 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:31,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:31,631 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:31,632 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 2 states and 972 transitions. [2023-08-30 18:59:31,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 182 flow [2023-08-30 18:59:31,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 18:59:31,636 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 88 flow [2023-08-30 18:59:31,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2023-08-30 18:59:31,639 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-08-30 18:59:31,639 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 88 flow [2023-08-30 18:59:31,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:31,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:31,640 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] [2023-08-30 18:59:31,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 18:59:31,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:59:31,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:31,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2005961306, now seen corresponding path program 1 times [2023-08-30 18:59:31,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:31,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799186548] [2023-08-30 18:59:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:31,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:31,730 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 18:59:31,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:31,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799186548] [2023-08-30 18:59:31,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799186548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:31,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:31,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 18:59:31,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713338227] [2023-08-30 18:59:31,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:31,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 18:59:31,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:31,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 18:59:31,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 18:59:31,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 458 out of 1064 [2023-08-30 18:59:31,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:31,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:31,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 458 of 1064 [2023-08-30 18:59:31,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:31,918 INFO L130 PetriNetUnfolder]: 789/1184 cut-off events. [2023-08-30 18:59:31,919 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 18:59:31,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 1184 events. 789/1184 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4309 event pairs, 473 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 2432. Up to 867 conditions per place. [2023-08-30 18:59:31,923 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 52 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-08-30 18:59:31,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 228 flow [2023-08-30 18:59:31,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 18:59:31,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 18:59:31,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1430 transitions. [2023-08-30 18:59:31,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44799498746867167 [2023-08-30 18:59:31,926 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1430 transitions. [2023-08-30 18:59:31,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1430 transitions. [2023-08-30 18:59:31,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:31,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1430 transitions. [2023-08-30 18:59:31,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 476.6666666666667) internal successors, (1430), 3 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:31,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:31,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:31,935 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 88 flow. Second operand 3 states and 1430 transitions. [2023-08-30 18:59:31,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 55 transitions, 228 flow [2023-08-30 18:59:31,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 18:59:31,937 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 106 flow [2023-08-30 18:59:31,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2023-08-30 18:59:31,937 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-30 18:59:31,938 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 106 flow [2023-08-30 18:59:31,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:31,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:31,939 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] [2023-08-30 18:59:31,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 18:59:31,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:59:31,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:31,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2002543410, now seen corresponding path program 1 times [2023-08-30 18:59:31,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:31,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276236198] [2023-08-30 18:59:31,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:31,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:32,108 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 18:59:32,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:32,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276236198] [2023-08-30 18:59:32,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276236198] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:32,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:32,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 18:59:32,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479590428] [2023-08-30 18:59:32,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:32,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 18:59:32,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:32,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 18:59:32,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 18:59:32,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 1064 [2023-08-30 18:59:32,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 462.6666666666667) internal successors, (1388), 3 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:32,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:32,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 1064 [2023-08-30 18:59:32,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:32,308 INFO L130 PetriNetUnfolder]: 789/1185 cut-off events. [2023-08-30 18:59:32,308 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-30 18:59:32,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 1185 events. 789/1185 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4292 event pairs, 641 based on Foata normal form. 0/1129 useless extension candidates. Maximal degree in co-relation 2802. Up to 1185 conditions per place. [2023-08-30 18:59:32,313 INFO L137 encePairwiseOnDemand]: 1061/1064 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-30 18:59:32,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 194 flow [2023-08-30 18:59:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 18:59:32,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 18:59:32,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1402 transitions. [2023-08-30 18:59:32,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392230576441103 [2023-08-30 18:59:32,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1402 transitions. [2023-08-30 18:59:32,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1402 transitions. [2023-08-30 18:59:32,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:32,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1402 transitions. [2023-08-30 18:59:32,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:32,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:32,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:32,324 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 106 flow. Second operand 3 states and 1402 transitions. [2023-08-30 18:59:32,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 194 flow [2023-08-30 18:59:32,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 18:59:32,327 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 112 flow [2023-08-30 18:59:32,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-08-30 18:59:32,328 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-30 18:59:32,328 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 112 flow [2023-08-30 18:59:32,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 462.6666666666667) internal successors, (1388), 3 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:32,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:32,329 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] [2023-08-30 18:59:32,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 18:59:32,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:59:32,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:32,330 INFO L85 PathProgramCache]: Analyzing trace with hash 283624533, now seen corresponding path program 1 times [2023-08-30 18:59:32,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:32,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811159144] [2023-08-30 18:59:32,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:32,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:59:32,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:32,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811159144] [2023-08-30 18:59:32,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811159144] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:32,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:32,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 18:59:32,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421626937] [2023-08-30 18:59:32,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:32,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 18:59:32,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:32,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 18:59:32,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 18:59:32,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-08-30 18:59:32,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 458.5) internal successors, (1834), 4 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:32,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:32,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-08-30 18:59:32,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:32,842 INFO L130 PetriNetUnfolder]: 789/1186 cut-off events. [2023-08-30 18:59:32,842 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-30 18:59:32,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1186 events. 789/1186 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 2671. Up to 1185 conditions per place. [2023-08-30 18:59:32,846 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 41 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-08-30 18:59:32,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 202 flow [2023-08-30 18:59:32,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 18:59:32,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 18:59:32,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1847 transitions. [2023-08-30 18:59:32,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397556390977443 [2023-08-30 18:59:32,850 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1847 transitions. [2023-08-30 18:59:32,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1847 transitions. [2023-08-30 18:59:32,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:32,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1847 transitions. [2023-08-30 18:59:32,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 461.75) internal successors, (1847), 4 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:32,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:32,861 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:32,861 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 112 flow. Second operand 4 states and 1847 transitions. [2023-08-30 18:59:32,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 202 flow [2023-08-30 18:59:32,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 18:59:32,863 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 122 flow [2023-08-30 18:59:32,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-08-30 18:59:32,864 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-08-30 18:59:32,864 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 122 flow [2023-08-30 18:59:32,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 458.5) internal successors, (1834), 4 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:32,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:32,865 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] [2023-08-30 18:59:32,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 18:59:32,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:59:32,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:32,866 INFO L85 PathProgramCache]: Analyzing trace with hash 194249792, now seen corresponding path program 1 times [2023-08-30 18:59:32,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:32,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651624545] [2023-08-30 18:59:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:32,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:59:32,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:32,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651624545] [2023-08-30 18:59:32,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651624545] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:32,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:32,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 18:59:32,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452946150] [2023-08-30 18:59:32,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:32,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 18:59:32,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:32,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 18:59:32,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 18:59:33,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-08-30 18:59:33,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 458.75) internal successors, (1835), 4 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:33,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:33,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-08-30 18:59:33,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:33,198 INFO L130 PetriNetUnfolder]: 789/1187 cut-off events. [2023-08-30 18:59:33,198 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-08-30 18:59:33,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 1187 events. 789/1187 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 2677. Up to 1185 conditions per place. [2023-08-30 18:59:33,202 INFO L137 encePairwiseOnDemand]: 1059/1064 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-08-30 18:59:33,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 214 flow [2023-08-30 18:59:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 18:59:33,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 18:59:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1848 transitions. [2023-08-30 18:59:33,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2023-08-30 18:59:33,206 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1848 transitions. [2023-08-30 18:59:33,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1848 transitions. [2023-08-30 18:59:33,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:33,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1848 transitions. [2023-08-30 18:59:33,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:33,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:33,216 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:33,216 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 122 flow. Second operand 4 states and 1848 transitions. [2023-08-30 18:59:33,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 214 flow [2023-08-30 18:59:33,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 18:59:33,219 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 134 flow [2023-08-30 18:59:33,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-08-30 18:59:33,221 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-30 18:59:33,221 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 134 flow [2023-08-30 18:59:33,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 458.75) internal successors, (1835), 4 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:33,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:33,222 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] [2023-08-30 18:59:33,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 18:59:33,222 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:59:33,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:33,223 INFO L85 PathProgramCache]: Analyzing trace with hash 917435877, now seen corresponding path program 1 times [2023-08-30 18:59:33,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:33,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64507648] [2023-08-30 18:59:33,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:33,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:33,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 18:59:33,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:33,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64507648] [2023-08-30 18:59:33,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64507648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:33,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:33,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 18:59:33,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947940788] [2023-08-30 18:59:33,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:33,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 18:59:33,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:33,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 18:59:33,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 18:59:33,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-08-30 18:59:33,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:33,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:33,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-08-30 18:59:33,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:33,559 INFO L130 PetriNetUnfolder]: 789/1188 cut-off events. [2023-08-30 18:59:33,559 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-08-30 18:59:33,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 1188 events. 789/1188 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 2684. Up to 1187 conditions per place. [2023-08-30 18:59:33,563 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 43 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-08-30 18:59:33,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 228 flow [2023-08-30 18:59:33,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 18:59:33,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 18:59:33,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1847 transitions. [2023-08-30 18:59:33,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397556390977443 [2023-08-30 18:59:33,566 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1847 transitions. [2023-08-30 18:59:33,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1847 transitions. [2023-08-30 18:59:33,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:33,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1847 transitions. [2023-08-30 18:59:33,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 461.75) internal successors, (1847), 4 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:33,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:33,574 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:33,574 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 134 flow. Second operand 4 states and 1847 transitions. [2023-08-30 18:59:33,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 228 flow [2023-08-30 18:59:33,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 18:59:33,578 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 144 flow [2023-08-30 18:59:33,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-08-30 18:59:33,579 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-08-30 18:59:33,580 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 144 flow [2023-08-30 18:59:33,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:33,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:33,581 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] [2023-08-30 18:59:33,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 18:59:33,582 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:59:33,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:33,582 INFO L85 PathProgramCache]: Analyzing trace with hash -230399429, now seen corresponding path program 1 times [2023-08-30 18:59:33,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:33,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869782220] [2023-08-30 18:59:33,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:33,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 18:59:33,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:33,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869782220] [2023-08-30 18:59:33,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869782220] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:59:33,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664487727] [2023-08-30 18:59:33,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:33,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:59:33,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:59:33,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:59:33,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 18:59:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:33,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 18:59:33,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:59:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 18:59:34,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 18:59:34,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664487727] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:34,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 18:59:34,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-08-30 18:59:34,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899090113] [2023-08-30 18:59:34,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:34,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 18:59:34,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:34,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 18:59:34,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 18:59:34,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-08-30 18:59:34,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 459.25) internal successors, (1837), 4 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:34,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:34,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-08-30 18:59:34,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:34,276 INFO L130 PetriNetUnfolder]: 789/1189 cut-off events. [2023-08-30 18:59:34,276 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-08-30 18:59:34,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 1189 events. 789/1189 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 2690. Up to 1188 conditions per place. [2023-08-30 18:59:34,280 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 44 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-08-30 18:59:34,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 240 flow [2023-08-30 18:59:34,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 18:59:34,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 18:59:34,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1847 transitions. [2023-08-30 18:59:34,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397556390977443 [2023-08-30 18:59:34,284 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1847 transitions. [2023-08-30 18:59:34,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1847 transitions. [2023-08-30 18:59:34,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:34,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1847 transitions. [2023-08-30 18:59:34,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 461.75) internal successors, (1847), 4 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:34,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:34,301 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:34,302 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 144 flow. Second operand 4 states and 1847 transitions. [2023-08-30 18:59:34,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 240 flow [2023-08-30 18:59:34,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 234 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 18:59:34,304 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 152 flow [2023-08-30 18:59:34,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-08-30 18:59:34,304 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-08-30 18:59:34,304 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 152 flow [2023-08-30 18:59:34,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 459.25) internal successors, (1837), 4 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:34,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:34,305 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] [2023-08-30 18:59:34,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 18:59:34,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:59:34,511 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:59:34,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:34,512 INFO L85 PathProgramCache]: Analyzing trace with hash 131576679, now seen corresponding path program 1 times [2023-08-30 18:59:34,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:34,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688768572] [2023-08-30 18:59:34,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:34,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 18:59:34,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:34,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688768572] [2023-08-30 18:59:34,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688768572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:34,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:34,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 18:59:34,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817629447] [2023-08-30 18:59:34,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:34,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 18:59:34,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:34,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 18:59:34,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 18:59:34,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-08-30 18:59:34,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 459.5) internal successors, (1838), 4 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:34,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:34,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-08-30 18:59:34,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:34,921 INFO L130 PetriNetUnfolder]: 789/1190 cut-off events. [2023-08-30 18:59:34,922 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-08-30 18:59:34,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 1190 events. 789/1190 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4294 event pairs, 641 based on Foata normal form. 0/1092 useless extension candidates. Maximal degree in co-relation 2695. Up to 1189 conditions per place. [2023-08-30 18:59:34,925 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-08-30 18:59:34,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 250 flow [2023-08-30 18:59:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 18:59:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 18:59:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1847 transitions. [2023-08-30 18:59:34,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397556390977443 [2023-08-30 18:59:34,929 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1847 transitions. [2023-08-30 18:59:34,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1847 transitions. [2023-08-30 18:59:34,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:34,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1847 transitions. [2023-08-30 18:59:34,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 461.75) internal successors, (1847), 4 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:34,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:34,936 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:34,936 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 152 flow. Second operand 4 states and 1847 transitions. [2023-08-30 18:59:34,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 250 flow [2023-08-30 18:59:34,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 18:59:34,938 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 160 flow [2023-08-30 18:59:34,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-08-30 18:59:34,940 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-30 18:59:34,940 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 160 flow [2023-08-30 18:59:34,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 459.5) internal successors, (1838), 4 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:34,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:34,941 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] [2023-08-30 18:59:34,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 18:59:34,941 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:59:34,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:34,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1404509908, now seen corresponding path program 1 times [2023-08-30 18:59:34,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:34,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998022184] [2023-08-30 18:59:34,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:34,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:36,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:36,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:36,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998022184] [2023-08-30 18:59:36,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998022184] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:36,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:36,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 18:59:36,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743300996] [2023-08-30 18:59:36,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:36,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 18:59:36,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:36,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 18:59:36,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-08-30 18:59:37,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 1064 [2023-08-30 18:59:37,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 160 flow. Second operand has 13 states, 13 states have (on average 414.6923076923077) internal successors, (5391), 13 states have internal predecessors, (5391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:37,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:37,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 1064 [2023-08-30 18:59:37,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:39,139 INFO L130 PetriNetUnfolder]: 2057/3162 cut-off events. [2023-08-30 18:59:39,140 INFO L131 PetriNetUnfolder]: For 303/303 co-relation queries the response was YES. [2023-08-30 18:59:39,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7206 conditions, 3162 events. 2057/3162 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 15935 event pairs, 304 based on Foata normal form. 1/2883 useless extension candidates. Maximal degree in co-relation 7195. Up to 1011 conditions per place. [2023-08-30 18:59:39,174 INFO L137 encePairwiseOnDemand]: 1051/1064 looper letters, 149 selfloop transitions, 11 changer transitions 7/167 dead transitions. [2023-08-30 18:59:39,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 167 transitions, 817 flow [2023-08-30 18:59:39,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 18:59:39,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 18:59:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5099 transitions. [2023-08-30 18:59:39,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993577694235589 [2023-08-30 18:59:39,184 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5099 transitions. [2023-08-30 18:59:39,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5099 transitions. [2023-08-30 18:59:39,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:39,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5099 transitions. [2023-08-30 18:59:39,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 424.9166666666667) internal successors, (5099), 12 states have internal predecessors, (5099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:39,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1064.0) internal successors, (13832), 13 states have internal predecessors, (13832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:39,205 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1064.0) internal successors, (13832), 13 states have internal predecessors, (13832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:39,205 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 160 flow. Second operand 12 states and 5099 transitions. [2023-08-30 18:59:39,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 167 transitions, 817 flow [2023-08-30 18:59:39,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 167 transitions, 811 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 18:59:39,213 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 216 flow [2023-08-30 18:59:39,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=216, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2023-08-30 18:59:39,214 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-08-30 18:59:39,214 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 216 flow [2023-08-30 18:59:39,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 414.6923076923077) internal successors, (5391), 13 states have internal predecessors, (5391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:39,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:39,215 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] [2023-08-30 18:59:39,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 18:59:39,216 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:59:39,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:39,216 INFO L85 PathProgramCache]: Analyzing trace with hash -2043930938, now seen corresponding path program 2 times [2023-08-30 18:59:39,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:39,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000990467] [2023-08-30 18:59:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:39,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:40,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:40,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000990467] [2023-08-30 18:59:40,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000990467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:40,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:40,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 18:59:40,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212423984] [2023-08-30 18:59:40,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:40,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 18:59:40,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:40,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 18:59:40,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-08-30 18:59:41,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-30 18:59:41,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 216 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:41,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:41,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-30 18:59:41,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:42,523 INFO L130 PetriNetUnfolder]: 4081/6398 cut-off events. [2023-08-30 18:59:42,524 INFO L131 PetriNetUnfolder]: For 3403/3403 co-relation queries the response was YES. [2023-08-30 18:59:42,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16807 conditions, 6398 events. 4081/6398 cut-off events. For 3403/3403 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 38481 event pairs, 819 based on Foata normal form. 1/6398 useless extension candidates. Maximal degree in co-relation 16790. Up to 2803 conditions per place. [2023-08-30 18:59:42,545 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 134 selfloop transitions, 12 changer transitions 7/153 dead transitions. [2023-08-30 18:59:42,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 153 transitions, 837 flow [2023-08-30 18:59:42,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 18:59:42,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 18:59:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3940 transitions. [2023-08-30 18:59:42,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114452798663325 [2023-08-30 18:59:42,552 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3940 transitions. [2023-08-30 18:59:42,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3940 transitions. [2023-08-30 18:59:42,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:42,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3940 transitions. [2023-08-30 18:59:42,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 437.77777777777777) internal successors, (3940), 9 states have internal predecessors, (3940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:42,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:42,567 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:42,567 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 216 flow. Second operand 9 states and 3940 transitions. [2023-08-30 18:59:42,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 153 transitions, 837 flow [2023-08-30 18:59:42,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 153 transitions, 804 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-30 18:59:42,594 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 307 flow [2023-08-30 18:59:42,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=307, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2023-08-30 18:59:42,594 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2023-08-30 18:59:42,594 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 307 flow [2023-08-30 18:59:42,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:42,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:42,595 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] [2023-08-30 18:59:42,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 18:59:42,596 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:59:42,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:42,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1268587720, now seen corresponding path program 3 times [2023-08-30 18:59:42,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:42,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578947943] [2023-08-30 18:59:42,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:42,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:43,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:43,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578947943] [2023-08-30 18:59:43,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578947943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:43,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:43,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 18:59:43,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042944209] [2023-08-30 18:59:43,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:43,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 18:59:43,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:43,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 18:59:43,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-08-30 18:59:46,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 1064 [2023-08-30 18:59:46,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 307 flow. Second operand has 14 states, 14 states have (on average 403.5) internal successors, (5649), 14 states have internal predecessors, (5649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:46,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:46,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 1064 [2023-08-30 18:59:46,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:48,967 INFO L130 PetriNetUnfolder]: 5335/8834 cut-off events. [2023-08-30 18:59:48,967 INFO L131 PetriNetUnfolder]: For 10406/10406 co-relation queries the response was YES. [2023-08-30 18:59:48,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26166 conditions, 8834 events. 5335/8834 cut-off events. For 10406/10406 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 60337 event pairs, 1122 based on Foata normal form. 1/8834 useless extension candidates. Maximal degree in co-relation 26143. Up to 2974 conditions per place. [2023-08-30 18:59:49,003 INFO L137 encePairwiseOnDemand]: 1046/1064 looper letters, 172 selfloop transitions, 64 changer transitions 7/243 dead transitions. [2023-08-30 18:59:49,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 243 transitions, 1590 flow [2023-08-30 18:59:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 18:59:49,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 18:59:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7407 transitions. [2023-08-30 18:59:49,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3867481203007519 [2023-08-30 18:59:49,018 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7407 transitions. [2023-08-30 18:59:49,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7407 transitions. [2023-08-30 18:59:49,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:49,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7407 transitions. [2023-08-30 18:59:49,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 411.5) internal successors, (7407), 18 states have internal predecessors, (7407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:49,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:49,046 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:49,046 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 307 flow. Second operand 18 states and 7407 transitions. [2023-08-30 18:59:49,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 243 transitions, 1590 flow [2023-08-30 18:59:49,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 243 transitions, 1580 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-30 18:59:49,092 INFO L231 Difference]: Finished difference. Result has 103 places, 123 transitions, 934 flow [2023-08-30 18:59:49,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=934, PETRI_PLACES=103, PETRI_TRANSITIONS=123} [2023-08-30 18:59:49,093 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2023-08-30 18:59:49,093 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 123 transitions, 934 flow [2023-08-30 18:59:49,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 403.5) internal successors, (5649), 14 states have internal predecessors, (5649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:49,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:49,094 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] [2023-08-30 18:59:49,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 18:59:49,095 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:59:49,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:49,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1785788936, now seen corresponding path program 4 times [2023-08-30 18:59:49,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:49,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800724681] [2023-08-30 18:59:49,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:49,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:50,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:50,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800724681] [2023-08-30 18:59:50,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800724681] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:50,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:50,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 18:59:50,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666550119] [2023-08-30 18:59:50,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:50,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 18:59:50,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:50,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 18:59:50,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-08-30 18:59:51,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-30 18:59:51,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 123 transitions, 934 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:51,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:51,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-30 18:59:51,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:52,747 INFO L130 PetriNetUnfolder]: 5889/9930 cut-off events. [2023-08-30 18:59:52,747 INFO L131 PetriNetUnfolder]: For 28769/28769 co-relation queries the response was YES. [2023-08-30 18:59:52,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39219 conditions, 9930 events. 5889/9930 cut-off events. For 28769/28769 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 70810 event pairs, 1305 based on Foata normal form. 1/9930 useless extension candidates. Maximal degree in co-relation 39184. Up to 3953 conditions per place. [2023-08-30 18:59:52,800 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 274 selfloop transitions, 29 changer transitions 7/310 dead transitions. [2023-08-30 18:59:52,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 310 transitions, 2717 flow [2023-08-30 18:59:52,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 18:59:52,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 18:59:52,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3948 transitions. [2023-08-30 18:59:52,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41228070175438597 [2023-08-30 18:59:52,807 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3948 transitions. [2023-08-30 18:59:52,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3948 transitions. [2023-08-30 18:59:52,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:52,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3948 transitions. [2023-08-30 18:59:52,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 438.6666666666667) internal successors, (3948), 9 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:52,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:52,820 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:52,820 INFO L175 Difference]: Start difference. First operand has 103 places, 123 transitions, 934 flow. Second operand 9 states and 3948 transitions. [2023-08-30 18:59:52,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 310 transitions, 2717 flow [2023-08-30 18:59:53,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 310 transitions, 2638 flow, removed 37 selfloop flow, removed 4 redundant places. [2023-08-30 18:59:53,017 INFO L231 Difference]: Finished difference. Result has 113 places, 132 transitions, 1121 flow [2023-08-30 18:59:53,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1121, PETRI_PLACES=113, PETRI_TRANSITIONS=132} [2023-08-30 18:59:53,017 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2023-08-30 18:59:53,018 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 132 transitions, 1121 flow [2023-08-30 18:59:53,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:53,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:53,019 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] [2023-08-30 18:59:53,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 18:59:53,019 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:59:53,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:53,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1312490772, now seen corresponding path program 5 times [2023-08-30 18:59:53,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:53,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005474942] [2023-08-30 18:59:53,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:53,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:54,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:54,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005474942] [2023-08-30 18:59:54,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005474942] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:54,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:54,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 18:59:54,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009629893] [2023-08-30 18:59:54,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:54,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 18:59:54,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:54,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 18:59:54,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-08-30 18:59:56,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 1064 [2023-08-30 18:59:56,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 132 transitions, 1121 flow. Second operand has 10 states, 10 states have (on average 415.5) internal successors, (4155), 10 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:56,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:56,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 1064 [2023-08-30 18:59:56,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:58,935 INFO L130 PetriNetUnfolder]: 6944/11873 cut-off events. [2023-08-30 18:59:58,935 INFO L131 PetriNetUnfolder]: For 44867/44867 co-relation queries the response was YES. [2023-08-30 18:59:58,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48976 conditions, 11873 events. 6944/11873 cut-off events. For 44867/44867 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 87849 event pairs, 1776 based on Foata normal form. 1/11873 useless extension candidates. Maximal degree in co-relation 48935. Up to 6148 conditions per place. [2023-08-30 18:59:59,009 INFO L137 encePairwiseOnDemand]: 1053/1064 looper letters, 230 selfloop transitions, 43 changer transitions 7/280 dead transitions. [2023-08-30 18:59:59,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 280 transitions, 2693 flow [2023-08-30 18:59:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 18:59:59,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 18:59:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4253 transitions. [2023-08-30 18:59:59,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.399718045112782 [2023-08-30 18:59:59,015 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4253 transitions. [2023-08-30 18:59:59,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4253 transitions. [2023-08-30 18:59:59,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:59,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4253 transitions. [2023-08-30 18:59:59,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 425.3) internal successors, (4253), 10 states have internal predecessors, (4253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:59,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:59,026 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:59,026 INFO L175 Difference]: Start difference. First operand has 113 places, 132 transitions, 1121 flow. Second operand 10 states and 4253 transitions. [2023-08-30 18:59:59,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 280 transitions, 2693 flow [2023-08-30 18:59:59,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 280 transitions, 2634 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-30 18:59:59,407 INFO L231 Difference]: Finished difference. Result has 127 places, 145 transitions, 1393 flow [2023-08-30 18:59:59,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1393, PETRI_PLACES=127, PETRI_TRANSITIONS=145} [2023-08-30 18:59:59,409 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2023-08-30 18:59:59,409 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 145 transitions, 1393 flow [2023-08-30 18:59:59,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 415.5) internal successors, (4155), 10 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:59,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:59,429 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] [2023-08-30 18:59:59,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 18:59:59,430 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:59:59,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:59,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1161360985, now seen corresponding path program 1 times [2023-08-30 18:59:59,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:59,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174447224] [2023-08-30 18:59:59,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:59,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:59,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:59,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174447224] [2023-08-30 18:59:59,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174447224] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:59,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:59,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 18:59:59,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420321652] [2023-08-30 18:59:59,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:59,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 18:59:59,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:59,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 18:59:59,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 18:59:59,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1064 [2023-08-30 18:59:59,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 145 transitions, 1393 flow. Second operand has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:59,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:59,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1064 [2023-08-30 18:59:59,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:01,691 INFO L130 PetriNetUnfolder]: 9347/16523 cut-off events. [2023-08-30 19:00:01,691 INFO L131 PetriNetUnfolder]: For 86663/86663 co-relation queries the response was YES. [2023-08-30 19:00:01,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70143 conditions, 16523 events. 9347/16523 cut-off events. For 86663/86663 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 135666 event pairs, 3438 based on Foata normal form. 248/16770 useless extension candidates. Maximal degree in co-relation 70095. Up to 8790 conditions per place. [2023-08-30 19:00:01,796 INFO L137 encePairwiseOnDemand]: 1058/1064 looper letters, 258 selfloop transitions, 24 changer transitions 0/282 dead transitions. [2023-08-30 19:00:01,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 282 transitions, 3368 flow [2023-08-30 19:00:01,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 19:00:01,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 19:00:01,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2311 transitions. [2023-08-30 19:00:01,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4343984962406015 [2023-08-30 19:00:01,800 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2311 transitions. [2023-08-30 19:00:01,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2311 transitions. [2023-08-30 19:00:01,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:01,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2311 transitions. [2023-08-30 19:00:01,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 462.2) internal successors, (2311), 5 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:01,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1064.0) internal successors, (6384), 6 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:01,805 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1064.0) internal successors, (6384), 6 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:01,805 INFO L175 Difference]: Start difference. First operand has 127 places, 145 transitions, 1393 flow. Second operand 5 states and 2311 transitions. [2023-08-30 19:00:01,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 282 transitions, 3368 flow [2023-08-30 19:00:02,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 282 transitions, 3274 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-08-30 19:00:02,332 INFO L231 Difference]: Finished difference. Result has 132 places, 159 transitions, 1617 flow [2023-08-30 19:00:02,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1617, PETRI_PLACES=132, PETRI_TRANSITIONS=159} [2023-08-30 19:00:02,333 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 90 predicate places. [2023-08-30 19:00:02,333 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 159 transitions, 1617 flow [2023-08-30 19:00:02,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:02,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:02,334 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] [2023-08-30 19:00:02,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 19:00:02,334 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:00:02,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:02,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1918445084, now seen corresponding path program 6 times [2023-08-30 19:00:02,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:02,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418432043] [2023-08-30 19:00:02,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:02,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:03,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:03,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418432043] [2023-08-30 19:00:03,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418432043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:03,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:03,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 19:00:03,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529519747] [2023-08-30 19:00:03,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:03,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 19:00:03,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:03,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 19:00:03,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-08-30 19:00:05,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 1064 [2023-08-30 19:00:05,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 159 transitions, 1617 flow. Second operand has 13 states, 13 states have (on average 403.6923076923077) internal successors, (5248), 13 states have internal predecessors, (5248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:05,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:05,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 1064 [2023-08-30 19:00:05,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:09,496 INFO L130 PetriNetUnfolder]: 9370/16593 cut-off events. [2023-08-30 19:00:09,496 INFO L131 PetriNetUnfolder]: For 85888/85888 co-relation queries the response was YES. [2023-08-30 19:00:09,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75956 conditions, 16593 events. 9370/16593 cut-off events. For 85888/85888 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 136810 event pairs, 1154 based on Foata normal form. 1/16593 useless extension candidates. Maximal degree in co-relation 75906. Up to 5499 conditions per place. [2023-08-30 19:00:09,599 INFO L137 encePairwiseOnDemand]: 1049/1064 looper letters, 260 selfloop transitions, 130 changer transitions 7/397 dead transitions. [2023-08-30 19:00:09,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 397 transitions, 4114 flow [2023-08-30 19:00:09,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 19:00:09,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 19:00:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7428 transitions. [2023-08-30 19:00:09,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38784461152882205 [2023-08-30 19:00:09,608 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7428 transitions. [2023-08-30 19:00:09,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7428 transitions. [2023-08-30 19:00:09,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:09,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7428 transitions. [2023-08-30 19:00:09,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 412.6666666666667) internal successors, (7428), 18 states have internal predecessors, (7428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:09,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:09,626 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:09,626 INFO L175 Difference]: Start difference. First operand has 132 places, 159 transitions, 1617 flow. Second operand 18 states and 7428 transitions. [2023-08-30 19:00:09,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 397 transitions, 4114 flow [2023-08-30 19:00:10,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 397 transitions, 4110 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-30 19:00:10,360 INFO L231 Difference]: Finished difference. Result has 157 places, 222 transitions, 2668 flow [2023-08-30 19:00:10,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2668, PETRI_PLACES=157, PETRI_TRANSITIONS=222} [2023-08-30 19:00:10,360 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2023-08-30 19:00:10,360 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 222 transitions, 2668 flow [2023-08-30 19:00:10,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 403.6923076923077) internal successors, (5248), 13 states have internal predecessors, (5248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:10,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:10,361 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] [2023-08-30 19:00:10,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 19:00:10,362 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:00:10,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:10,362 INFO L85 PathProgramCache]: Analyzing trace with hash -605776418, now seen corresponding path program 7 times [2023-08-30 19:00:10,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:10,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000948453] [2023-08-30 19:00:10,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:10,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:11,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:11,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000948453] [2023-08-30 19:00:11,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000948453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:11,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:11,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 19:00:11,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500480022] [2023-08-30 19:00:11,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:11,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 19:00:11,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:11,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 19:00:11,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-30 19:00:12,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1064 [2023-08-30 19:00:12,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 222 transitions, 2668 flow. Second operand has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:12,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:12,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1064 [2023-08-30 19:00:12,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:15,447 INFO L130 PetriNetUnfolder]: 9569/17260 cut-off events. [2023-08-30 19:00:15,447 INFO L131 PetriNetUnfolder]: For 124559/124559 co-relation queries the response was YES. [2023-08-30 19:00:15,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86201 conditions, 17260 events. 9569/17260 cut-off events. For 124559/124559 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 146290 event pairs, 2246 based on Foata normal form. 1/17260 useless extension candidates. Maximal degree in co-relation 86142. Up to 6581 conditions per place. [2023-08-30 19:00:15,547 INFO L137 encePairwiseOnDemand]: 1052/1064 looper letters, 325 selfloop transitions, 99 changer transitions 8/432 dead transitions. [2023-08-30 19:00:15,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 432 transitions, 5698 flow [2023-08-30 19:00:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 19:00:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 19:00:15,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4285 transitions. [2023-08-30 19:00:15,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40272556390977443 [2023-08-30 19:00:15,556 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4285 transitions. [2023-08-30 19:00:15,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4285 transitions. [2023-08-30 19:00:15,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:15,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4285 transitions. [2023-08-30 19:00:15,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 428.5) internal successors, (4285), 10 states have internal predecessors, (4285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:15,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:15,565 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:15,565 INFO L175 Difference]: Start difference. First operand has 157 places, 222 transitions, 2668 flow. Second operand 10 states and 4285 transitions. [2023-08-30 19:00:15,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 432 transitions, 5698 flow [2023-08-30 19:00:16,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 432 transitions, 5582 flow, removed 38 selfloop flow, removed 5 redundant places. [2023-08-30 19:00:16,656 INFO L231 Difference]: Finished difference. Result has 167 places, 267 transitions, 3618 flow [2023-08-30 19:00:16,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=2602, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3618, PETRI_PLACES=167, PETRI_TRANSITIONS=267} [2023-08-30 19:00:16,657 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 125 predicate places. [2023-08-30 19:00:16,657 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 267 transitions, 3618 flow [2023-08-30 19:00:16,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:16,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:16,658 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] [2023-08-30 19:00:16,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 19:00:16,658 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:00:16,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:16,658 INFO L85 PathProgramCache]: Analyzing trace with hash -948365568, now seen corresponding path program 8 times [2023-08-30 19:00:16,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:16,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138889829] [2023-08-30 19:00:16,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:16,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:17,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:17,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:17,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138889829] [2023-08-30 19:00:17,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138889829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:17,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:17,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 19:00:17,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130016491] [2023-08-30 19:00:17,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:17,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 19:00:17,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:17,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 19:00:17,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-08-30 19:00:19,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 1064 [2023-08-30 19:00:19,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 267 transitions, 3618 flow. Second operand has 14 states, 14 states have (on average 405.5) internal successors, (5677), 14 states have internal predecessors, (5677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:19,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:19,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 1064 [2023-08-30 19:00:19,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:22,128 INFO L130 PetriNetUnfolder]: 9564/17247 cut-off events. [2023-08-30 19:00:22,129 INFO L131 PetriNetUnfolder]: For 152468/152468 co-relation queries the response was YES. [2023-08-30 19:00:22,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93023 conditions, 17247 events. 9564/17247 cut-off events. For 152468/152468 co-relation queries the response was YES. Maximal size of possible extension queue 1165. Compared 145908 event pairs, 3027 based on Foata normal form. 1/17247 useless extension candidates. Maximal degree in co-relation 92958. Up to 8681 conditions per place. [2023-08-30 19:00:22,246 INFO L137 encePairwiseOnDemand]: 1048/1064 looper letters, 317 selfloop transitions, 86 changer transitions 8/411 dead transitions. [2023-08-30 19:00:22,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 411 transitions, 5896 flow [2023-08-30 19:00:22,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 19:00:22,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 19:00:22,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 5385 transitions. [2023-08-30 19:00:22,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38931463273568534 [2023-08-30 19:00:22,252 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 5385 transitions. [2023-08-30 19:00:22,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 5385 transitions. [2023-08-30 19:00:22,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:22,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 5385 transitions. [2023-08-30 19:00:22,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 414.2307692307692) internal successors, (5385), 13 states have internal predecessors, (5385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:22,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 1064.0) internal successors, (14896), 14 states have internal predecessors, (14896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:22,268 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 1064.0) internal successors, (14896), 14 states have internal predecessors, (14896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:22,268 INFO L175 Difference]: Start difference. First operand has 167 places, 267 transitions, 3618 flow. Second operand 13 states and 5385 transitions. [2023-08-30 19:00:22,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 411 transitions, 5896 flow [2023-08-30 19:00:23,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 411 transitions, 5684 flow, removed 64 selfloop flow, removed 3 redundant places. [2023-08-30 19:00:23,607 INFO L231 Difference]: Finished difference. Result has 181 places, 289 transitions, 4154 flow [2023-08-30 19:00:23,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4154, PETRI_PLACES=181, PETRI_TRANSITIONS=289} [2023-08-30 19:00:23,608 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 139 predicate places. [2023-08-30 19:00:23,608 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 289 transitions, 4154 flow [2023-08-30 19:00:23,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 405.5) internal successors, (5677), 14 states have internal predecessors, (5677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:23,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:23,609 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] [2023-08-30 19:00:23,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 19:00:23,609 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:00:23,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:23,609 INFO L85 PathProgramCache]: Analyzing trace with hash -770924642, now seen corresponding path program 9 times [2023-08-30 19:00:23,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:23,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609216076] [2023-08-30 19:00:23,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:23,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:24,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:24,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609216076] [2023-08-30 19:00:24,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609216076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:24,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:24,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 19:00:24,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449503491] [2023-08-30 19:00:24,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:24,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 19:00:24,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:24,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 19:00:24,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-30 19:00:25,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-30 19:00:25,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 289 transitions, 4154 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:25,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:25,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-30 19:00:25,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:29,351 INFO L130 PetriNetUnfolder]: 11008/19865 cut-off events. [2023-08-30 19:00:29,351 INFO L131 PetriNetUnfolder]: For 190407/190407 co-relation queries the response was YES. [2023-08-30 19:00:29,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108701 conditions, 19865 events. 11008/19865 cut-off events. For 190407/190407 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 171512 event pairs, 2564 based on Foata normal form. 1/19865 useless extension candidates. Maximal degree in co-relation 108631. Up to 9344 conditions per place. [2023-08-30 19:00:29,503 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 423 selfloop transitions, 78 changer transitions 7/508 dead transitions. [2023-08-30 19:00:29,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 508 transitions, 7584 flow [2023-08-30 19:00:29,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 19:00:29,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 19:00:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3955 transitions. [2023-08-30 19:00:29,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130116959064328 [2023-08-30 19:00:29,506 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3955 transitions. [2023-08-30 19:00:29,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3955 transitions. [2023-08-30 19:00:29,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:29,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3955 transitions. [2023-08-30 19:00:29,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 439.44444444444446) internal successors, (3955), 9 states have internal predecessors, (3955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:29,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:29,514 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:29,514 INFO L175 Difference]: Start difference. First operand has 181 places, 289 transitions, 4154 flow. Second operand 9 states and 3955 transitions. [2023-08-30 19:00:29,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 508 transitions, 7584 flow [2023-08-30 19:00:31,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 508 transitions, 7380 flow, removed 26 selfloop flow, removed 7 redundant places. [2023-08-30 19:00:31,487 INFO L231 Difference]: Finished difference. Result has 187 places, 314 transitions, 4730 flow [2023-08-30 19:00:31,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=4037, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4730, PETRI_PLACES=187, PETRI_TRANSITIONS=314} [2023-08-30 19:00:31,488 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 145 predicate places. [2023-08-30 19:00:31,488 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 314 transitions, 4730 flow [2023-08-30 19:00:31,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:31,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:31,489 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] [2023-08-30 19:00:31,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 19:00:31,489 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:00:31,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:31,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1701044426, now seen corresponding path program 10 times [2023-08-30 19:00:31,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:31,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251752845] [2023-08-30 19:00:31,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:31,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:32,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:32,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251752845] [2023-08-30 19:00:32,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251752845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:32,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:32,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 19:00:32,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601916459] [2023-08-30 19:00:32,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:32,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 19:00:32,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:32,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 19:00:32,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-08-30 19:00:33,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 1064 [2023-08-30 19:00:33,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 314 transitions, 4730 flow. Second operand has 12 states, 12 states have (on average 414.9166666666667) internal successors, (4979), 12 states have internal predecessors, (4979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:33,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:33,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 1064 [2023-08-30 19:00:33,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:38,065 INFO L130 PetriNetUnfolder]: 12254/22399 cut-off events. [2023-08-30 19:00:38,065 INFO L131 PetriNetUnfolder]: For 212135/212135 co-relation queries the response was YES. [2023-08-30 19:00:38,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121963 conditions, 22399 events. 12254/22399 cut-off events. For 212135/212135 co-relation queries the response was YES. Maximal size of possible extension queue 1498. Compared 199758 event pairs, 2513 based on Foata normal form. 1/22399 useless extension candidates. Maximal degree in co-relation 121888. Up to 9772 conditions per place. [2023-08-30 19:00:38,270 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 429 selfloop transitions, 53 changer transitions 7/489 dead transitions. [2023-08-30 19:00:38,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 489 transitions, 7616 flow [2023-08-30 19:00:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 19:00:38,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 19:00:38,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4667 transitions. [2023-08-30 19:00:38,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3987525632262474 [2023-08-30 19:00:38,275 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4667 transitions. [2023-08-30 19:00:38,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4667 transitions. [2023-08-30 19:00:38,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:38,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4667 transitions. [2023-08-30 19:00:38,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 424.27272727272725) internal successors, (4667), 11 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:38,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:38,293 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:38,293 INFO L175 Difference]: Start difference. First operand has 187 places, 314 transitions, 4730 flow. Second operand 11 states and 4667 transitions. [2023-08-30 19:00:38,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 489 transitions, 7616 flow [2023-08-30 19:00:40,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 489 transitions, 7476 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-08-30 19:00:40,312 INFO L231 Difference]: Finished difference. Result has 199 places, 324 transitions, 4988 flow [2023-08-30 19:00:40,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=4628, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4988, PETRI_PLACES=199, PETRI_TRANSITIONS=324} [2023-08-30 19:00:40,312 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2023-08-30 19:00:40,312 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 324 transitions, 4988 flow [2023-08-30 19:00:40,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 414.9166666666667) internal successors, (4979), 12 states have internal predecessors, (4979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:40,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:40,313 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] [2023-08-30 19:00:40,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 19:00:40,313 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:00:40,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:40,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1165370582, now seen corresponding path program 11 times [2023-08-30 19:00:40,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:40,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211657571] [2023-08-30 19:00:40,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:40,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:41,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:41,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:41,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211657571] [2023-08-30 19:00:41,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211657571] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:41,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:41,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 19:00:41,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617625812] [2023-08-30 19:00:41,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:41,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 19:00:41,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:41,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 19:00:41,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-30 19:00:41,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1064 [2023-08-30 19:00:41,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 324 transitions, 4988 flow. Second operand has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:41,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:41,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1064 [2023-08-30 19:00:41,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:48,181 INFO L130 PetriNetUnfolder]: 16860/30772 cut-off events. [2023-08-30 19:00:48,193 INFO L131 PetriNetUnfolder]: For 347694/347694 co-relation queries the response was YES. [2023-08-30 19:00:48,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170136 conditions, 30772 events. 16860/30772 cut-off events. For 347694/347694 co-relation queries the response was YES. Maximal size of possible extension queue 2051. Compared 285896 event pairs, 4772 based on Foata normal form. 2/30773 useless extension candidates. Maximal degree in co-relation 170056. Up to 10862 conditions per place. [2023-08-30 19:00:48,635 INFO L137 encePairwiseOnDemand]: 1052/1064 looper letters, 603 selfloop transitions, 152 changer transitions 16/771 dead transitions. [2023-08-30 19:00:48,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 771 transitions, 11672 flow [2023-08-30 19:00:48,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 19:00:48,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 19:00:48,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7288 transitions. [2023-08-30 19:00:48,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4029190623617868 [2023-08-30 19:00:48,643 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7288 transitions. [2023-08-30 19:00:48,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7288 transitions. [2023-08-30 19:00:48,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:48,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7288 transitions. [2023-08-30 19:00:48,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 428.70588235294116) internal successors, (7288), 17 states have internal predecessors, (7288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:48,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:48,673 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:48,673 INFO L175 Difference]: Start difference. First operand has 199 places, 324 transitions, 4988 flow. Second operand 17 states and 7288 transitions. [2023-08-30 19:00:48,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 771 transitions, 11672 flow [2023-08-30 19:00:52,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 771 transitions, 11503 flow, removed 43 selfloop flow, removed 5 redundant places. [2023-08-30 19:00:52,438 INFO L231 Difference]: Finished difference. Result has 224 places, 404 transitions, 6993 flow [2023-08-30 19:00:52,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=4910, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6993, PETRI_PLACES=224, PETRI_TRANSITIONS=404} [2023-08-30 19:00:52,438 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 182 predicate places. [2023-08-30 19:00:52,438 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 404 transitions, 6993 flow [2023-08-30 19:00:52,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:52,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:52,439 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] [2023-08-30 19:00:52,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 19:00:52,439 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:00:52,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:52,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1478290662, now seen corresponding path program 12 times [2023-08-30 19:00:52,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:52,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432052185] [2023-08-30 19:00:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:52,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:53,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:53,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432052185] [2023-08-30 19:00:53,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432052185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:53,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:53,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 19:00:53,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584043252] [2023-08-30 19:00:53,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:53,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 19:00:53,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:53,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 19:00:53,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-08-30 19:00:54,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1064 [2023-08-30 19:00:54,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 404 transitions, 6993 flow. Second operand has 13 states, 13 states have (on average 416.6923076923077) internal successors, (5417), 13 states have internal predecessors, (5417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:54,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:54,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1064 [2023-08-30 19:00:54,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:01:04,295 INFO L130 PetriNetUnfolder]: 24515/44858 cut-off events. [2023-08-30 19:01:04,295 INFO L131 PetriNetUnfolder]: For 528886/528886 co-relation queries the response was YES. [2023-08-30 19:01:04,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257531 conditions, 44858 events. 24515/44858 cut-off events. For 528886/528886 co-relation queries the response was YES. Maximal size of possible extension queue 3065. Compared 443078 event pairs, 8839 based on Foata normal form. 2/44859 useless extension candidates. Maximal degree in co-relation 257437. Up to 19099 conditions per place. [2023-08-30 19:01:04,890 INFO L137 encePairwiseOnDemand]: 1053/1064 looper letters, 734 selfloop transitions, 100 changer transitions 7/841 dead transitions. [2023-08-30 19:01:04,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 841 transitions, 15062 flow [2023-08-30 19:01:04,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 19:01:04,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 19:01:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4298 transitions. [2023-08-30 19:01:04,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4039473684210526 [2023-08-30 19:01:04,893 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4298 transitions. [2023-08-30 19:01:04,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4298 transitions. [2023-08-30 19:01:04,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:01:04,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4298 transitions. [2023-08-30 19:01:04,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 429.8) internal successors, (4298), 10 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:04,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:04,901 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:04,901 INFO L175 Difference]: Start difference. First operand has 224 places, 404 transitions, 6993 flow. Second operand 10 states and 4298 transitions. [2023-08-30 19:01:04,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 841 transitions, 15062 flow [2023-08-30 19:01:14,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 841 transitions, 14769 flow, removed 98 selfloop flow, removed 3 redundant places. [2023-08-30 19:01:14,821 INFO L231 Difference]: Finished difference. Result has 235 places, 467 transitions, 8600 flow [2023-08-30 19:01:14,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=6779, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8600, PETRI_PLACES=235, PETRI_TRANSITIONS=467} [2023-08-30 19:01:14,822 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 193 predicate places. [2023-08-30 19:01:14,822 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 467 transitions, 8600 flow [2023-08-30 19:01:14,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 416.6923076923077) internal successors, (5417), 13 states have internal predecessors, (5417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:14,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:01:14,823 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] [2023-08-30 19:01:14,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 19:01:14,823 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:01:14,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:01:14,823 INFO L85 PathProgramCache]: Analyzing trace with hash -447950648, now seen corresponding path program 13 times [2023-08-30 19:01:14,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:01:14,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130237865] [2023-08-30 19:01:14,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:01:14,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:01:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:01:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:01:15,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:01:15,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130237865] [2023-08-30 19:01:15,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130237865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:01:15,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:01:15,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 19:01:15,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641954804] [2023-08-30 19:01:15,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:01:15,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 19:01:15,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:01:15,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 19:01:15,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-08-30 19:01:16,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 1064 [2023-08-30 19:01:16,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 467 transitions, 8600 flow. Second operand has 10 states, 10 states have (on average 420.5) internal successors, (4205), 10 states have internal predecessors, (4205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:16,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:01:16,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 1064 [2023-08-30 19:01:16,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:01:31,450 INFO L130 PetriNetUnfolder]: 30871/56791 cut-off events. [2023-08-30 19:01:31,450 INFO L131 PetriNetUnfolder]: For 739638/739638 co-relation queries the response was YES. [2023-08-30 19:01:32,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332116 conditions, 56791 events. 30871/56791 cut-off events. For 739638/739638 co-relation queries the response was YES. Maximal size of possible extension queue 3875. Compared 581275 event pairs, 12627 based on Foata normal form. 2/56792 useless extension candidates. Maximal degree in co-relation 332017. Up to 28003 conditions per place. [2023-08-30 19:01:32,286 INFO L137 encePairwiseOnDemand]: 1053/1064 looper letters, 876 selfloop transitions, 160 changer transitions 14/1050 dead transitions. [2023-08-30 19:01:32,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 1050 transitions, 18904 flow [2023-08-30 19:01:32,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 19:01:32,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 19:01:32,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 6915 transitions. [2023-08-30 19:01:32,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40619125939849626 [2023-08-30 19:01:32,291 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 6915 transitions. [2023-08-30 19:01:32,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 6915 transitions. [2023-08-30 19:01:32,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:01:32,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 6915 transitions. [2023-08-30 19:01:32,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 432.1875) internal successors, (6915), 16 states have internal predecessors, (6915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:32,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 1064.0) internal successors, (18088), 17 states have internal predecessors, (18088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:32,302 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 1064.0) internal successors, (18088), 17 states have internal predecessors, (18088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:32,302 INFO L175 Difference]: Start difference. First operand has 235 places, 467 transitions, 8600 flow. Second operand 16 states and 6915 transitions. [2023-08-30 19:01:32,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 1050 transitions, 18904 flow [2023-08-30 19:01:50,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1050 transitions, 18683 flow, removed 101 selfloop flow, removed 3 redundant places. [2023-08-30 19:01:50,382 INFO L231 Difference]: Finished difference. Result has 259 places, 528 transitions, 10555 flow [2023-08-30 19:01:50,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=8521, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10555, PETRI_PLACES=259, PETRI_TRANSITIONS=528} [2023-08-30 19:01:50,384 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 217 predicate places. [2023-08-30 19:01:50,384 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 528 transitions, 10555 flow [2023-08-30 19:01:50,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 420.5) internal successors, (4205), 10 states have internal predecessors, (4205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:50,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:01:50,384 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] [2023-08-30 19:01:50,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 19:01:50,385 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:01:50,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:01:50,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1864998854, now seen corresponding path program 14 times [2023-08-30 19:01:50,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:01:50,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559880843] [2023-08-30 19:01:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:01:50,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:01:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:01:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:01:51,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:01:51,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559880843] [2023-08-30 19:01:51,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559880843] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:01:51,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:01:51,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 19:01:51,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653713866] [2023-08-30 19:01:51,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:01:51,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 19:01:51,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:01:51,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 19:01:51,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-08-30 19:01:52,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 1064 [2023-08-30 19:01:52,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 528 transitions, 10555 flow. Second operand has 10 states, 10 states have (on average 415.5) internal successors, (4155), 10 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:52,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:01:52,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 1064 [2023-08-30 19:01:52,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:02:07,910 INFO L130 PetriNetUnfolder]: 30869/56774 cut-off events. [2023-08-30 19:02:07,910 INFO L131 PetriNetUnfolder]: For 803964/803964 co-relation queries the response was YES. [2023-08-30 19:02:08,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339350 conditions, 56774 events. 30869/56774 cut-off events. For 803964/803964 co-relation queries the response was YES. Maximal size of possible extension queue 3873. Compared 581699 event pairs, 9335 based on Foata normal form. 1/56774 useless extension candidates. Maximal degree in co-relation 339239. Up to 26768 conditions per place. [2023-08-30 19:02:08,838 INFO L137 encePairwiseOnDemand]: 1049/1064 looper letters, 429 selfloop transitions, 460 changer transitions 7/896 dead transitions. [2023-08-30 19:02:08,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 896 transitions, 17622 flow [2023-08-30 19:02:08,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 19:02:08,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 19:02:08,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6373 transitions. [2023-08-30 19:02:08,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993107769423559 [2023-08-30 19:02:08,843 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6373 transitions. [2023-08-30 19:02:08,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6373 transitions. [2023-08-30 19:02:08,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:02:08,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6373 transitions. [2023-08-30 19:02:08,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 424.8666666666667) internal successors, (6373), 15 states have internal predecessors, (6373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:08,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:08,854 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:08,854 INFO L175 Difference]: Start difference. First operand has 259 places, 528 transitions, 10555 flow. Second operand 15 states and 6373 transitions. [2023-08-30 19:02:08,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 896 transitions, 17622 flow [2023-08-30 19:02:27,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 896 transitions, 17479 flow, removed 71 selfloop flow, removed 3 redundant places. [2023-08-30 19:02:27,603 INFO L231 Difference]: Finished difference. Result has 276 places, 702 transitions, 14937 flow [2023-08-30 19:02:27,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=10450, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=14937, PETRI_PLACES=276, PETRI_TRANSITIONS=702} [2023-08-30 19:02:27,604 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2023-08-30 19:02:27,604 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 702 transitions, 14937 flow [2023-08-30 19:02:27,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 415.5) internal successors, (4155), 10 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:27,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:02:27,605 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] [2023-08-30 19:02:27,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 19:02:27,605 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:02:27,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:02:27,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1317815394, now seen corresponding path program 15 times [2023-08-30 19:02:27,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:02:27,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665855197] [2023-08-30 19:02:27,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:02:27,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:02:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:02:28,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:02:28,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:02:28,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665855197] [2023-08-30 19:02:28,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665855197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:02:28,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:02:28,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 19:02:28,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058446336] [2023-08-30 19:02:28,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:02:28,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 19:02:28,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:02:28,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 19:02:28,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-30 19:02:28,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-30 19:02:28,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 702 transitions, 14937 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:28,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:02:28,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-30 19:02:28,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:02:46,742 INFO L130 PetriNetUnfolder]: 33320/61333 cut-off events. [2023-08-30 19:02:46,744 INFO L131 PetriNetUnfolder]: For 1000612/1000612 co-relation queries the response was YES. [2023-08-30 19:02:47,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386771 conditions, 61333 events. 33320/61333 cut-off events. For 1000612/1000612 co-relation queries the response was YES. Maximal size of possible extension queue 4178. Compared 633571 event pairs, 13362 based on Foata normal form. 2/61334 useless extension candidates. Maximal degree in co-relation 386654. Up to 28004 conditions per place. [2023-08-30 19:02:47,901 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1005 selfloop transitions, 211 changer transitions 16/1232 dead transitions. [2023-08-30 19:02:47,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 1232 transitions, 25059 flow [2023-08-30 19:02:47,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 19:02:47,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 19:02:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6595 transitions. [2023-08-30 19:02:47,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132205513784461 [2023-08-30 19:02:47,906 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6595 transitions. [2023-08-30 19:02:47,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6595 transitions. [2023-08-30 19:02:47,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:02:47,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6595 transitions. [2023-08-30 19:02:47,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 439.6666666666667) internal successors, (6595), 15 states have internal predecessors, (6595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:47,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:47,916 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:47,917 INFO L175 Difference]: Start difference. First operand has 276 places, 702 transitions, 14937 flow. Second operand 15 states and 6595 transitions. [2023-08-30 19:02:47,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 1232 transitions, 25059 flow [2023-08-30 19:03:17,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1232 transitions, 24749 flow, removed 155 selfloop flow, removed 1 redundant places. [2023-08-30 19:03:17,889 INFO L231 Difference]: Finished difference. Result has 298 places, 749 transitions, 16646 flow [2023-08-30 19:03:17,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=14759, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=16646, PETRI_PLACES=298, PETRI_TRANSITIONS=749} [2023-08-30 19:03:17,890 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2023-08-30 19:03:17,890 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 749 transitions, 16646 flow [2023-08-30 19:03:17,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:17,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:03:17,891 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] [2023-08-30 19:03:17,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 19:03:17,891 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:03:17,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:03:17,892 INFO L85 PathProgramCache]: Analyzing trace with hash 178866192, now seen corresponding path program 16 times [2023-08-30 19:03:17,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:03:17,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756230416] [2023-08-30 19:03:17,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:03:17,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:03:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:03:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:03:18,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:03:18,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756230416] [2023-08-30 19:03:18,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756230416] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:03:18,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:03:18,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 19:03:18,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409905910] [2023-08-30 19:03:18,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:03:18,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 19:03:18,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:03:18,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 19:03:18,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-30 19:03:19,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1064 [2023-08-30 19:03:19,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 749 transitions, 16646 flow. Second operand has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:19,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:03:19,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1064 [2023-08-30 19:03:19,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:03:38,211 INFO L130 PetriNetUnfolder]: 33317/61347 cut-off events. [2023-08-30 19:03:38,212 INFO L131 PetriNetUnfolder]: For 1014682/1014682 co-relation queries the response was YES. [2023-08-30 19:03:39,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389198 conditions, 61347 events. 33317/61347 cut-off events. For 1014682/1014682 co-relation queries the response was YES. Maximal size of possible extension queue 4180. Compared 634775 event pairs, 11205 based on Foata normal form. 1/61347 useless extension candidates. Maximal degree in co-relation 389071. Up to 28119 conditions per place. [2023-08-30 19:03:39,575 INFO L137 encePairwiseOnDemand]: 1048/1064 looper letters, 403 selfloop transitions, 518 changer transitions 7/928 dead transitions. [2023-08-30 19:03:39,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 928 transitions, 20423 flow [2023-08-30 19:03:39,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 19:03:39,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 19:03:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6412 transitions. [2023-08-30 19:03:39,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017543859649123 [2023-08-30 19:03:39,579 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6412 transitions. [2023-08-30 19:03:39,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6412 transitions. [2023-08-30 19:03:39,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:03:39,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6412 transitions. [2023-08-30 19:03:39,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 427.46666666666664) internal successors, (6412), 15 states have internal predecessors, (6412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:39,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:39,590 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:39,590 INFO L175 Difference]: Start difference. First operand has 298 places, 749 transitions, 16646 flow. Second operand 15 states and 6412 transitions. [2023-08-30 19:03:39,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 928 transitions, 20423 flow [2023-08-30 19:04:07,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 928 transitions, 19968 flow, removed 94 selfloop flow, removed 6 redundant places. [2023-08-30 19:04:07,462 INFO L231 Difference]: Finished difference. Result has 311 places, 768 transitions, 18052 flow [2023-08-30 19:04:07,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=16215, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=502, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=18052, PETRI_PLACES=311, PETRI_TRANSITIONS=768} [2023-08-30 19:04:07,463 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2023-08-30 19:04:07,463 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 768 transitions, 18052 flow [2023-08-30 19:04:07,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:07,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:04:07,464 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] [2023-08-30 19:04:07,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 19:04:07,464 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:04:07,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:04:07,464 INFO L85 PathProgramCache]: Analyzing trace with hash -317965381, now seen corresponding path program 2 times [2023-08-30 19:04:07,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:04:07,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727485595] [2023-08-30 19:04:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:04:07,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:04:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:04:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:04:07,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:04:07,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727485595] [2023-08-30 19:04:07,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727485595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:04:07,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:04:07,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 19:04:07,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740317902] [2023-08-30 19:04:07,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:04:07,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 19:04:07,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:04:07,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 19:04:07,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 19:04:07,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1064 [2023-08-30 19:04:07,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 768 transitions, 18052 flow. Second operand has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:07,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:04:07,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1064 [2023-08-30 19:04:07,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:04:30,198 INFO L130 PetriNetUnfolder]: 39389/73419 cut-off events. [2023-08-30 19:04:30,198 INFO L131 PetriNetUnfolder]: For 1377659/1377659 co-relation queries the response was YES. [2023-08-30 19:04:31,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480271 conditions, 73419 events. 39389/73419 cut-off events. For 1377659/1377659 co-relation queries the response was YES. Maximal size of possible extension queue 4819. Compared 786743 event pairs, 10546 based on Foata normal form. 789/74207 useless extension candidates. Maximal degree in co-relation 480139. Up to 32138 conditions per place. [2023-08-30 19:04:31,825 INFO L137 encePairwiseOnDemand]: 1056/1064 looper letters, 1096 selfloop transitions, 206 changer transitions 0/1302 dead transitions. [2023-08-30 19:04:31,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 1302 transitions, 32290 flow [2023-08-30 19:04:31,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 19:04:31,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 19:04:31,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1870 transitions. [2023-08-30 19:04:31,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393796992481203 [2023-08-30 19:04:31,827 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1870 transitions. [2023-08-30 19:04:31,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1870 transitions. [2023-08-30 19:04:31,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:04:31,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1870 transitions. [2023-08-30 19:04:31,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 467.5) internal successors, (1870), 4 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:31,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:31,832 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:31,832 INFO L175 Difference]: Start difference. First operand has 311 places, 768 transitions, 18052 flow. Second operand 4 states and 1870 transitions. [2023-08-30 19:04:31,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 1302 transitions, 32290 flow [2023-08-30 19:05:15,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 1302 transitions, 31026 flow, removed 178 selfloop flow, removed 5 redundant places. [2023-08-30 19:05:15,369 INFO L231 Difference]: Finished difference. Result has 311 places, 841 transitions, 20192 flow [2023-08-30 19:05:15,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=17068, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=20192, PETRI_PLACES=311, PETRI_TRANSITIONS=841} [2023-08-30 19:05:15,370 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2023-08-30 19:05:15,371 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 841 transitions, 20192 flow [2023-08-30 19:05:15,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:15,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:05:15,371 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] [2023-08-30 19:05:15,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 19:05:15,371 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:05:15,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:05:15,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1330045670, now seen corresponding path program 17 times [2023-08-30 19:05:15,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:05:15,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925892688] [2023-08-30 19:05:15,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:05:15,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:05:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:05:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:05:16,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:05:16,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925892688] [2023-08-30 19:05:16,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925892688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:05:16,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:05:16,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 19:05:16,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208515181] [2023-08-30 19:05:16,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:05:16,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 19:05:16,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:05:16,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 19:05:16,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-08-30 19:05:16,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1064 [2023-08-30 19:05:16,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 841 transitions, 20192 flow. Second operand has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:16,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:05:16,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1064 [2023-08-30 19:05:16,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:05:43,407 INFO L130 PetriNetUnfolder]: 41546/77438 cut-off events. [2023-08-30 19:05:43,407 INFO L131 PetriNetUnfolder]: For 1418452/1418452 co-relation queries the response was YES. [2023-08-30 19:05:45,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517543 conditions, 77438 events. 41546/77438 cut-off events. For 1418452/1418452 co-relation queries the response was YES. Maximal size of possible extension queue 5089. Compared 830930 event pairs, 19593 based on Foata normal form. 2/77439 useless extension candidates. Maximal degree in co-relation 517410. Up to 35892 conditions per place. [2023-08-30 19:05:45,367 INFO L137 encePairwiseOnDemand]: 1050/1064 looper letters, 1153 selfloop transitions, 280 changer transitions 16/1449 dead transitions. [2023-08-30 19:05:45,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 1449 transitions, 32823 flow [2023-08-30 19:05:45,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 19:05:45,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 19:05:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7315 transitions. [2023-08-30 19:05:45,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40441176470588236 [2023-08-30 19:05:45,407 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7315 transitions. [2023-08-30 19:05:45,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7315 transitions. [2023-08-30 19:05:45,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:05:45,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7315 transitions. [2023-08-30 19:05:45,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 430.29411764705884) internal successors, (7315), 17 states have internal predecessors, (7315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:45,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:45,423 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:45,424 INFO L175 Difference]: Start difference. First operand has 311 places, 841 transitions, 20192 flow. Second operand 17 states and 7315 transitions. [2023-08-30 19:05:45,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 1449 transitions, 32823 flow [2023-08-30 19:06:35,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 1449 transitions, 32807 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-30 19:06:35,370 INFO L231 Difference]: Finished difference. Result has 341 places, 908 transitions, 22973 flow [2023-08-30 19:06:35,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=20190, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=22973, PETRI_PLACES=341, PETRI_TRANSITIONS=908} [2023-08-30 19:06:35,371 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 299 predicate places. [2023-08-30 19:06:35,372 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 908 transitions, 22973 flow [2023-08-30 19:06:35,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 417.5) internal successors, (4175), 10 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:35,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:06:35,372 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] [2023-08-30 19:06:35,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 19:06:35,373 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:06:35,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:06:35,373 INFO L85 PathProgramCache]: Analyzing trace with hash -857679955, now seen corresponding path program 3 times [2023-08-30 19:06:35,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:06:35,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224501037] [2023-08-30 19:06:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:06:35,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:06:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:06:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:06:35,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:06:35,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224501037] [2023-08-30 19:06:35,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224501037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:06:35,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:06:35,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 19:06:35,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314728620] [2023-08-30 19:06:35,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:06:35,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 19:06:35,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:06:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 19:06:35,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 19:06:35,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1064 [2023-08-30 19:06:35,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 908 transitions, 22973 flow. Second operand has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:35,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:06:35,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1064 [2023-08-30 19:06:35,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:07:02,619 INFO L130 PetriNetUnfolder]: 42071/76230 cut-off events. [2023-08-30 19:07:02,620 INFO L131 PetriNetUnfolder]: For 1524772/1524772 co-relation queries the response was YES. [2023-08-30 19:07:04,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516578 conditions, 76230 events. 42071/76230 cut-off events. For 1524772/1524772 co-relation queries the response was YES. Maximal size of possible extension queue 4880. Compared 792088 event pairs, 10702 based on Foata normal form. 781/77010 useless extension candidates. Maximal degree in co-relation 516430. Up to 37857 conditions per place. [2023-08-30 19:07:04,756 INFO L137 encePairwiseOnDemand]: 1056/1064 looper letters, 966 selfloop transitions, 269 changer transitions 0/1235 dead transitions. [2023-08-30 19:07:04,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 1235 transitions, 31633 flow [2023-08-30 19:07:04,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 19:07:04,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 19:07:04,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1866 transitions. [2023-08-30 19:07:04,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43843984962406013 [2023-08-30 19:07:04,758 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1866 transitions. [2023-08-30 19:07:04,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1866 transitions. [2023-08-30 19:07:04,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:07:04,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1866 transitions. [2023-08-30 19:07:04,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 466.5) internal successors, (1866), 4 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:04,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:04,762 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:04,762 INFO L175 Difference]: Start difference. First operand has 341 places, 908 transitions, 22973 flow. Second operand 4 states and 1866 transitions. [2023-08-30 19:07:04,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 1235 transitions, 31633 flow [2023-08-30 19:07:48,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 1235 transitions, 30772 flow, removed 240 selfloop flow, removed 5 redundant places. [2023-08-30 19:07:48,356 INFO L231 Difference]: Finished difference. Result has 339 places, 942 transitions, 23740 flow [2023-08-30 19:07:48,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=19921, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=23740, PETRI_PLACES=339, PETRI_TRANSITIONS=942} [2023-08-30 19:07:48,357 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 297 predicate places. [2023-08-30 19:07:48,357 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 942 transitions, 23740 flow [2023-08-30 19:07:48,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 453.75) internal successors, (1815), 4 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:48,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:07:48,358 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] [2023-08-30 19:07:48,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 19:07:48,358 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:07:48,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:07:48,358 INFO L85 PathProgramCache]: Analyzing trace with hash -777514146, now seen corresponding path program 18 times [2023-08-30 19:07:48,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:07:48,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510447708] [2023-08-30 19:07:48,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:07:48,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:07:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:07:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:07:49,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:07:49,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510447708] [2023-08-30 19:07:49,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510447708] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:07:49,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:07:49,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 19:07:49,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110963461] [2023-08-30 19:07:49,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:07:49,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 19:07:49,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:07:49,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 19:07:49,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-30 19:07:49,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-30 19:07:49,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 942 transitions, 23740 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:49,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:07:49,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-30 19:07:49,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand