./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/parallel-ticket-4.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 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 12:57:59,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 12:57:59,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 12:57:59,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 12:57:59,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 12:57:59,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 12:57:59,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 12:57:59,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 12:57:59,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 12:57:59,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 12:57:59,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 12:57:59,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 12:57:59,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 12:57:59,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 12:57:59,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 12:57:59,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 12:57:59,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 12:57:59,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 12:57:59,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 12:57:59,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 12:57:59,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 12:57:59,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 12:57:59,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 12:57:59,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 12:57:59,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 12:57:59,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 12:57:59,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 12:57:59,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 12:57:59,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 12:57:59,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 12:57:59,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 12:57:59,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 12:57:59,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 12:57:59,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 12:57:59,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 12:57:59,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 12:57:59,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 12:57:59,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 12:57:59,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 12:57:59,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 12:57:59,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 12:57:59,715 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 12:57:59,751 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 12:57:59,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 12:57:59,752 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 12:57:59,752 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 12:57:59,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 12:57:59,753 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 12:57:59,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 12:57:59,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 12:57:59,754 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 12:57:59,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 12:57:59,755 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 12:57:59,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 12:57:59,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 12:57:59,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 12:57:59,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 12:57:59,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 12:57:59,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 12:57:59,756 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 12:57:59,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 12:57:59,756 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 12:57:59,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 12:57:59,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 12:57:59,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 12:57:59,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 12:57:59,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:57:59,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 12:57:59,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 12:57:59,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 12:57:59,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 12:57:59,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 12:57:59,758 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 12:57:59,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 12:57:59,759 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 12:57:59,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 12:57:59,759 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 12:57:59,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 12:58:00,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 12:58:00,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 12:58:00,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 12:58:00,075 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 12:58:00,076 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 12:58:00,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-09-01 12:58:01,286 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 12:58:01,501 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 12:58:01,501 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-09-01 12:58:01,507 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73397a36d/b9b97450655941ddb5ed99603157ff6e/FLAGc09834430 [2023-09-01 12:58:01,518 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73397a36d/b9b97450655941ddb5ed99603157ff6e [2023-09-01 12:58:01,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 12:58:01,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 12:58:01,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 12:58:01,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 12:58:01,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 12:58:01,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:58:01" (1/1) ... [2023-09-01 12:58:01,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e40ae0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:01, skipping insertion in model container [2023-09-01 12:58:01,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:58:01" (1/1) ... [2023-09-01 12:58:01,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 12:58:01,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 12:58:01,738 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/parallel-ticket-4.wvr.c[3526,3539] [2023-09-01 12:58:01,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:58:01,760 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 12:58:01,798 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/parallel-ticket-4.wvr.c[3526,3539] [2023-09-01 12:58:01,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:58:01,812 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 12:58:01,813 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 12:58:01,818 INFO L208 MainTranslator]: Completed translation [2023-09-01 12:58:01,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:01 WrapperNode [2023-09-01 12:58:01,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 12:58:01,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 12:58:01,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 12:58:01,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 12:58:01,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:01" (1/1) ... [2023-09-01 12:58:01,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:01" (1/1) ... [2023-09-01 12:58:01,889 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 206 [2023-09-01 12:58:01,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 12:58:01,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 12:58:01,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 12:58:01,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 12:58:01,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:01" (1/1) ... [2023-09-01 12:58:01,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:01" (1/1) ... [2023-09-01 12:58:01,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:01" (1/1) ... [2023-09-01 12:58:01,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:01" (1/1) ... [2023-09-01 12:58:01,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:01" (1/1) ... [2023-09-01 12:58:01,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:01" (1/1) ... [2023-09-01 12:58:01,933 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:01" (1/1) ... [2023-09-01 12:58:01,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:01" (1/1) ... [2023-09-01 12:58:01,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 12:58:01,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 12:58:01,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 12:58:01,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 12:58:01,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:01" (1/1) ... [2023-09-01 12:58:01,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:58:01,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:58:01,974 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) [2023-09-01 12:58:02,002 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 [2023-09-01 12:58:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 12:58:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 12:58:02,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 12:58:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 12:58:02,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 12:58:02,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 12:58:02,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 12:58:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 12:58:02,018 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 12:58:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 12:58:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 12:58:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 12:58:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 12:58:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 12:58:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 12:58:02,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 12:58:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 12:58:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 12:58:02,021 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 12:58:02,172 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 12:58:02,174 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 12:58:02,418 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 12:58:02,479 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 12:58:02,482 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 12:58:02,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:58:02 BoogieIcfgContainer [2023-09-01 12:58:02,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 12:58:02,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 12:58:02,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 12:58:02,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 12:58:02,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:58:01" (1/3) ... [2023-09-01 12:58:02,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667a022b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:58:02, skipping insertion in model container [2023-09-01 12:58:02,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:01" (2/3) ... [2023-09-01 12:58:02,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667a022b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:58:02, skipping insertion in model container [2023-09-01 12:58:02,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:58:02" (3/3) ... [2023-09-01 12:58:02,500 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-09-01 12:58:02,505 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 12:58:02,512 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 12:58:02,512 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 12:58:02,513 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 12:58:02,568 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 12:58:02,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 143 transitions, 318 flow [2023-09-01 12:58:02,657 INFO L130 PetriNetUnfolder]: 2/139 cut-off events. [2023-09-01 12:58:02,657 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 12:58:02,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 139 events. 2/139 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2023-09-01 12:58:02,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 143 transitions, 318 flow [2023-09-01 12:58:02,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 127 transitions, 278 flow [2023-09-01 12:58:02,667 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 12:58:02,674 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 127 transitions, 278 flow [2023-09-01 12:58:02,676 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 127 transitions, 278 flow [2023-09-01 12:58:02,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 127 transitions, 278 flow [2023-09-01 12:58:02,706 INFO L130 PetriNetUnfolder]: 2/127 cut-off events. [2023-09-01 12:58:02,706 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 12:58:02,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 127 events. 2/127 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2023-09-01 12:58:02,708 INFO L119 LiptonReduction]: Number of co-enabled transitions 1302 [2023-09-01 12:58:06,537 INFO L134 LiptonReduction]: Checked pairs total: 7253 [2023-09-01 12:58:06,537 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-09-01 12:58:06,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 12:58:06,555 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;@74b6e993, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 12:58:06,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-09-01 12:58:06,563 INFO L130 PetriNetUnfolder]: 0/33 cut-off events. [2023-09-01 12:58:06,564 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 12:58:06,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:06,564 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] [2023-09-01 12:58:06,565 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 2 more)] === [2023-09-01 12:58:06,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:06,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1293402980, now seen corresponding path program 1 times [2023-09-01 12:58:06,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:06,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405336522] [2023-09-01 12:58:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:06,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:08,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:08,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405336522] [2023-09-01 12:58:08,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405336522] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:08,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:08,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:58:08,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796586995] [2023-09-01 12:58:08,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:08,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:58:08,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:08,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:58:08,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:58:08,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 244 [2023-09-01 12:58:08,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 92 flow. Second operand has 8 states, 8 states have (on average 109.25) internal successors, (874), 8 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:08,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:08,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 244 [2023-09-01 12:58:08,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:09,595 INFO L130 PetriNetUnfolder]: 9301/13074 cut-off events. [2023-09-01 12:58:09,595 INFO L131 PetriNetUnfolder]: For 1184/1184 co-relation queries the response was YES. [2023-09-01 12:58:09,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27015 conditions, 13074 events. 9301/13074 cut-off events. For 1184/1184 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 66417 event pairs, 1586 based on Foata normal form. 2/13076 useless extension candidates. Maximal degree in co-relation 26391. Up to 3581 conditions per place. [2023-09-01 12:58:09,653 INFO L137 encePairwiseOnDemand]: 232/244 looper letters, 114 selfloop transitions, 22 changer transitions 27/163 dead transitions. [2023-09-01 12:58:09,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 163 transitions, 742 flow [2023-09-01 12:58:09,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:58:09,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:58:09,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1110 transitions. [2023-09-01 12:58:09,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505464480874317 [2023-09-01 12:58:09,671 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1110 transitions. [2023-09-01 12:58:09,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1110 transitions. [2023-09-01 12:58:09,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:09,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1110 transitions. [2023-09-01 12:58:09,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 123.33333333333333) internal successors, (1110), 9 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:09,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:09,691 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:09,692 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 92 flow. Second operand 9 states and 1110 transitions. [2023-09-01 12:58:09,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 163 transitions, 742 flow [2023-09-01 12:58:09,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 163 transitions, 682 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-09-01 12:58:09,709 INFO L231 Difference]: Finished difference. Result has 53 places, 59 transitions, 237 flow [2023-09-01 12:58:09,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=237, PETRI_PLACES=53, PETRI_TRANSITIONS=59} [2023-09-01 12:58:09,714 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2023-09-01 12:58:09,714 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 59 transitions, 237 flow [2023-09-01 12:58:09,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 109.25) internal successors, (874), 8 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:09,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:09,716 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] [2023-09-01 12:58:09,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 12:58:09,716 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 2 more)] === [2023-09-01 12:58:09,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:09,717 INFO L85 PathProgramCache]: Analyzing trace with hash -507591758, now seen corresponding path program 2 times [2023-09-01 12:58:09,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:09,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902648287] [2023-09-01 12:58:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:09,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:09,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:09,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902648287] [2023-09-01 12:58:09,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902648287] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:09,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:09,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:58:09,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822749084] [2023-09-01 12:58:09,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:09,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:58:09,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:09,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:58:09,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:58:09,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 244 [2023-09-01 12:58:09,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 59 transitions, 237 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:09,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:09,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 244 [2023-09-01 12:58:09,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:10,622 INFO L130 PetriNetUnfolder]: 3862/6276 cut-off events. [2023-09-01 12:58:10,622 INFO L131 PetriNetUnfolder]: For 2304/2392 co-relation queries the response was YES. [2023-09-01 12:58:10,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15084 conditions, 6276 events. 3862/6276 cut-off events. For 2304/2392 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 39848 event pairs, 359 based on Foata normal form. 96/6280 useless extension candidates. Maximal degree in co-relation 10581. Up to 2014 conditions per place. [2023-09-01 12:58:10,667 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 79 selfloop transitions, 37 changer transitions 1/141 dead transitions. [2023-09-01 12:58:10,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 141 transitions, 702 flow [2023-09-01 12:58:10,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:58:10,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:58:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 907 transitions. [2023-09-01 12:58:10,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5310304449648712 [2023-09-01 12:58:10,671 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 907 transitions. [2023-09-01 12:58:10,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 907 transitions. [2023-09-01 12:58:10,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:10,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 907 transitions. [2023-09-01 12:58:10,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.57142857142858) internal successors, (907), 7 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:10,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:10,677 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:10,677 INFO L175 Difference]: Start difference. First operand has 53 places, 59 transitions, 237 flow. Second operand 7 states and 907 transitions. [2023-09-01 12:58:10,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 141 transitions, 702 flow [2023-09-01 12:58:10,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 141 transitions, 687 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-09-01 12:58:10,696 INFO L231 Difference]: Finished difference. Result has 59 places, 86 transitions, 396 flow [2023-09-01 12:58:10,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=396, PETRI_PLACES=59, PETRI_TRANSITIONS=86} [2023-09-01 12:58:10,697 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2023-09-01 12:58:10,698 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 86 transitions, 396 flow [2023-09-01 12:58:10,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:10,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:10,699 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] [2023-09-01 12:58:10,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 12:58:10,699 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 2 more)] === [2023-09-01 12:58:10,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:10,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1824461242, now seen corresponding path program 3 times [2023-09-01 12:58:10,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:10,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102905088] [2023-09-01 12:58:10,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:10,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:10,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:10,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:10,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102905088] [2023-09-01 12:58:10,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102905088] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:10,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:10,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:58:10,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990581267] [2023-09-01 12:58:10,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:10,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:58:10,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:10,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:58:10,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:58:10,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 244 [2023-09-01 12:58:10,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 86 transitions, 396 flow. Second operand has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:10,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:10,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 244 [2023-09-01 12:58:10,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:11,594 INFO L130 PetriNetUnfolder]: 4747/7982 cut-off events. [2023-09-01 12:58:11,595 INFO L131 PetriNetUnfolder]: For 7289/7737 co-relation queries the response was YES. [2023-09-01 12:58:11,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22755 conditions, 7982 events. 4747/7982 cut-off events. For 7289/7737 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 55540 event pairs, 1034 based on Foata normal form. 442/8284 useless extension candidates. Maximal degree in co-relation 13218. Up to 2263 conditions per place. [2023-09-01 12:58:11,661 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 94 selfloop transitions, 47 changer transitions 0/165 dead transitions. [2023-09-01 12:58:11,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 165 transitions, 992 flow [2023-09-01 12:58:11,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:58:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:58:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 658 transitions. [2023-09-01 12:58:11,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393442622950819 [2023-09-01 12:58:11,664 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 658 transitions. [2023-09-01 12:58:11,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 658 transitions. [2023-09-01 12:58:11,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:11,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 658 transitions. [2023-09-01 12:58:11,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.6) internal successors, (658), 5 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:11,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:11,669 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:11,669 INFO L175 Difference]: Start difference. First operand has 59 places, 86 transitions, 396 flow. Second operand 5 states and 658 transitions. [2023-09-01 12:58:11,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 165 transitions, 992 flow [2023-09-01 12:58:11,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 165 transitions, 927 flow, removed 30 selfloop flow, removed 1 redundant places. [2023-09-01 12:58:11,694 INFO L231 Difference]: Finished difference. Result has 64 places, 118 transitions, 691 flow [2023-09-01 12:58:11,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=691, PETRI_PLACES=64, PETRI_TRANSITIONS=118} [2023-09-01 12:58:11,695 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 17 predicate places. [2023-09-01 12:58:11,695 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 118 transitions, 691 flow [2023-09-01 12:58:11,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:11,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:11,696 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] [2023-09-01 12:58:11,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 12:58:11,696 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 2 more)] === [2023-09-01 12:58:11,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:11,697 INFO L85 PathProgramCache]: Analyzing trace with hash 434887448, now seen corresponding path program 4 times [2023-09-01 12:58:11,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:11,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184159909] [2023-09-01 12:58:11,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:11,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:11,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:11,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184159909] [2023-09-01 12:58:11,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184159909] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:11,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:11,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 12:58:11,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99801469] [2023-09-01 12:58:11,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:11,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 12:58:11,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:11,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 12:58:11,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 12:58:11,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 244 [2023-09-01 12:58:11,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 118 transitions, 691 flow. Second operand has 6 states, 6 states have (on average 118.83333333333333) internal successors, (713), 6 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:11,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:11,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 244 [2023-09-01 12:58:11,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:12,777 INFO L130 PetriNetUnfolder]: 5420/9283 cut-off events. [2023-09-01 12:58:12,777 INFO L131 PetriNetUnfolder]: For 17144/18398 co-relation queries the response was YES. [2023-09-01 12:58:12,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30516 conditions, 9283 events. 5420/9283 cut-off events. For 17144/18398 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 67609 event pairs, 797 based on Foata normal form. 484/9579 useless extension candidates. Maximal degree in co-relation 16238. Up to 3121 conditions per place. [2023-09-01 12:58:12,836 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 95 selfloop transitions, 82 changer transitions 2/203 dead transitions. [2023-09-01 12:58:12,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 203 transitions, 1424 flow [2023-09-01 12:58:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:58:12,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:58:12,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 797 transitions. [2023-09-01 12:58:12,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5443989071038251 [2023-09-01 12:58:12,840 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 797 transitions. [2023-09-01 12:58:12,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 797 transitions. [2023-09-01 12:58:12,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:12,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 797 transitions. [2023-09-01 12:58:12,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.83333333333334) internal successors, (797), 6 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:12,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 244.0) internal successors, (1708), 7 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:12,844 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 244.0) internal successors, (1708), 7 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:12,845 INFO L175 Difference]: Start difference. First operand has 64 places, 118 transitions, 691 flow. Second operand 6 states and 797 transitions. [2023-09-01 12:58:12,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 203 transitions, 1424 flow [2023-09-01 12:58:12,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 203 transitions, 1383 flow, removed 17 selfloop flow, removed 1 redundant places. [2023-09-01 12:58:12,881 INFO L231 Difference]: Finished difference. Result has 70 places, 143 transitions, 1063 flow [2023-09-01 12:58:12,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1063, PETRI_PLACES=70, PETRI_TRANSITIONS=143} [2023-09-01 12:58:12,882 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2023-09-01 12:58:12,883 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 143 transitions, 1063 flow [2023-09-01 12:58:12,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.83333333333333) internal successors, (713), 6 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:12,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:12,883 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] [2023-09-01 12:58:12,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 12:58:12,884 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 2 more)] === [2023-09-01 12:58:12,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:12,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2039758930, now seen corresponding path program 5 times [2023-09-01 12:58:12,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:12,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399617409] [2023-09-01 12:58:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:12,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:13,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:13,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399617409] [2023-09-01 12:58:13,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399617409] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:13,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:13,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 12:58:13,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565506608] [2023-09-01 12:58:13,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:13,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 12:58:13,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:13,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 12:58:13,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 12:58:13,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 244 [2023-09-01 12:58:13,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 143 transitions, 1063 flow. Second operand has 6 states, 6 states have (on average 116.83333333333333) internal successors, (701), 6 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:13,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:13,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 244 [2023-09-01 12:58:13,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:13,971 INFO L130 PetriNetUnfolder]: 5294/9109 cut-off events. [2023-09-01 12:58:13,971 INFO L131 PetriNetUnfolder]: For 25429/26977 co-relation queries the response was YES. [2023-09-01 12:58:14,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33888 conditions, 9109 events. 5294/9109 cut-off events. For 25429/26977 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 64521 event pairs, 1136 based on Foata normal form. 548/9533 useless extension candidates. Maximal degree in co-relation 18074. Up to 6595 conditions per place. [2023-09-01 12:58:14,042 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 160 selfloop transitions, 62 changer transitions 0/245 dead transitions. [2023-09-01 12:58:14,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 245 transitions, 2194 flow [2023-09-01 12:58:14,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:58:14,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:58:14,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 876 transitions. [2023-09-01 12:58:14,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128805620608899 [2023-09-01 12:58:14,046 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 876 transitions. [2023-09-01 12:58:14,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 876 transitions. [2023-09-01 12:58:14,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:14,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 876 transitions. [2023-09-01 12:58:14,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:14,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:14,051 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:14,052 INFO L175 Difference]: Start difference. First operand has 70 places, 143 transitions, 1063 flow. Second operand 7 states and 876 transitions. [2023-09-01 12:58:14,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 245 transitions, 2194 flow [2023-09-01 12:58:14,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 245 transitions, 2188 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-09-01 12:58:14,097 INFO L231 Difference]: Finished difference. Result has 79 places, 191 transitions, 1750 flow [2023-09-01 12:58:14,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1750, PETRI_PLACES=79, PETRI_TRANSITIONS=191} [2023-09-01 12:58:14,100 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 32 predicate places. [2023-09-01 12:58:14,100 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 191 transitions, 1750 flow [2023-09-01 12:58:14,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.83333333333333) internal successors, (701), 6 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:14,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:14,101 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] [2023-09-01 12:58:14,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 12:58:14,101 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 2 more)] === [2023-09-01 12:58:14,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:14,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2090481260, now seen corresponding path program 6 times [2023-09-01 12:58:14,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:14,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50225624] [2023-09-01 12:58:14,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:14,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:14,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:14,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50225624] [2023-09-01 12:58:14,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50225624] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:14,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:14,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:58:14,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462537980] [2023-09-01 12:58:14,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:14,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:58:14,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:14,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:58:14,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:58:14,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 244 [2023-09-01 12:58:14,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 191 transitions, 1750 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:14,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:14,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 244 [2023-09-01 12:58:14,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:15,294 INFO L130 PetriNetUnfolder]: 5631/9882 cut-off events. [2023-09-01 12:58:15,295 INFO L131 PetriNetUnfolder]: For 37871/39983 co-relation queries the response was YES. [2023-09-01 12:58:15,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39554 conditions, 9882 events. 5631/9882 cut-off events. For 37871/39983 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 73994 event pairs, 558 based on Foata normal form. 1110/10828 useless extension candidates. Maximal degree in co-relation 20952. Up to 3367 conditions per place. [2023-09-01 12:58:15,416 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 84 selfloop transitions, 158 changer transitions 1/266 dead transitions. [2023-09-01 12:58:15,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 266 transitions, 2634 flow [2023-09-01 12:58:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:58:15,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:58:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 912 transitions. [2023-09-01 12:58:15,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5339578454332553 [2023-09-01 12:58:15,420 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 912 transitions. [2023-09-01 12:58:15,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 912 transitions. [2023-09-01 12:58:15,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:15,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 912 transitions. [2023-09-01 12:58:15,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.28571428571428) internal successors, (912), 7 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:15,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:15,427 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:15,427 INFO L175 Difference]: Start difference. First operand has 79 places, 191 transitions, 1750 flow. Second operand 7 states and 912 transitions. [2023-09-01 12:58:15,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 266 transitions, 2634 flow [2023-09-01 12:58:15,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 266 transitions, 2629 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 12:58:15,511 INFO L231 Difference]: Finished difference. Result has 85 places, 206 transitions, 2286 flow [2023-09-01 12:58:15,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2286, PETRI_PLACES=85, PETRI_TRANSITIONS=206} [2023-09-01 12:58:15,514 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2023-09-01 12:58:15,514 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 206 transitions, 2286 flow [2023-09-01 12:58:15,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:15,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:15,515 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] [2023-09-01 12:58:15,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 12:58:15,516 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 2 more)] === [2023-09-01 12:58:15,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:15,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1438799446, now seen corresponding path program 7 times [2023-09-01 12:58:15,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:15,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595717647] [2023-09-01 12:58:15,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:15,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:15,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:15,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:15,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595717647] [2023-09-01 12:58:15,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595717647] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:15,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:15,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:58:15,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091380325] [2023-09-01 12:58:15,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:15,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:58:15,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:15,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:58:15,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:58:15,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 244 [2023-09-01 12:58:15,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 206 transitions, 2286 flow. Second operand has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:15,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:15,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 244 [2023-09-01 12:58:15,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:16,502 INFO L130 PetriNetUnfolder]: 4879/8641 cut-off events. [2023-09-01 12:58:16,503 INFO L131 PetriNetUnfolder]: For 45152/46522 co-relation queries the response was YES. [2023-09-01 12:58:16,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38349 conditions, 8641 events. 4879/8641 cut-off events. For 45152/46522 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 63731 event pairs, 1139 based on Foata normal form. 582/9118 useless extension candidates. Maximal degree in co-relation 18495. Up to 2545 conditions per place. [2023-09-01 12:58:16,580 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 115 selfloop transitions, 105 changer transitions 10/252 dead transitions. [2023-09-01 12:58:16,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 252 transitions, 2898 flow [2023-09-01 12:58:16,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:58:16,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:58:16,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 662 transitions. [2023-09-01 12:58:16,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5426229508196722 [2023-09-01 12:58:16,583 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 662 transitions. [2023-09-01 12:58:16,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 662 transitions. [2023-09-01 12:58:16,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:16,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 662 transitions. [2023-09-01 12:58:16,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.4) internal successors, (662), 5 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:16,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:16,588 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:16,588 INFO L175 Difference]: Start difference. First operand has 85 places, 206 transitions, 2286 flow. Second operand 5 states and 662 transitions. [2023-09-01 12:58:16,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 252 transitions, 2898 flow [2023-09-01 12:58:16,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 252 transitions, 2651 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 12:58:16,650 INFO L231 Difference]: Finished difference. Result has 87 places, 195 transitions, 2195 flow [2023-09-01 12:58:16,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2195, PETRI_PLACES=87, PETRI_TRANSITIONS=195} [2023-09-01 12:58:16,651 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 40 predicate places. [2023-09-01 12:58:16,651 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 195 transitions, 2195 flow [2023-09-01 12:58:16,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:16,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:16,652 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] [2023-09-01 12:58:16,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 12:58:16,653 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 2 more)] === [2023-09-01 12:58:16,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:16,653 INFO L85 PathProgramCache]: Analyzing trace with hash 269622218, now seen corresponding path program 8 times [2023-09-01 12:58:16,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:16,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301947010] [2023-09-01 12:58:16,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:16,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:16,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:16,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301947010] [2023-09-01 12:58:16,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301947010] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:16,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:16,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:58:16,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036880815] [2023-09-01 12:58:16,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:16,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:58:16,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:16,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:58:16,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:58:16,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 244 [2023-09-01 12:58:16,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 195 transitions, 2195 flow. Second operand has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:16,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:16,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 244 [2023-09-01 12:58:16,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:17,425 INFO L130 PetriNetUnfolder]: 2907/5561 cut-off events. [2023-09-01 12:58:17,426 INFO L131 PetriNetUnfolder]: For 30881/32021 co-relation queries the response was YES. [2023-09-01 12:58:17,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24780 conditions, 5561 events. 2907/5561 cut-off events. For 30881/32021 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 40416 event pairs, 550 based on Foata normal form. 796/6319 useless extension candidates. Maximal degree in co-relation 17474. Up to 1645 conditions per place. [2023-09-01 12:58:17,456 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 111 selfloop transitions, 105 changer transitions 1/234 dead transitions. [2023-09-01 12:58:17,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 234 transitions, 2814 flow [2023-09-01 12:58:17,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:58:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:58:17,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 656 transitions. [2023-09-01 12:58:17,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377049180327869 [2023-09-01 12:58:17,463 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 656 transitions. [2023-09-01 12:58:17,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 656 transitions. [2023-09-01 12:58:17,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:17,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 656 transitions. [2023-09-01 12:58:17,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.2) internal successors, (656), 5 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:17,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:17,469 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:17,470 INFO L175 Difference]: Start difference. First operand has 87 places, 195 transitions, 2195 flow. Second operand 5 states and 656 transitions. [2023-09-01 12:58:17,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 234 transitions, 2814 flow [2023-09-01 12:58:17,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 234 transitions, 2692 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-09-01 12:58:17,508 INFO L231 Difference]: Finished difference. Result has 86 places, 191 transitions, 2354 flow [2023-09-01 12:58:17,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2354, PETRI_PLACES=86, PETRI_TRANSITIONS=191} [2023-09-01 12:58:17,510 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 39 predicate places. [2023-09-01 12:58:17,511 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 191 transitions, 2354 flow [2023-09-01 12:58:17,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:17,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:17,511 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] [2023-09-01 12:58:17,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 12:58:17,512 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 2 more)] === [2023-09-01 12:58:17,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:17,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2049779478, now seen corresponding path program 9 times [2023-09-01 12:58:17,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:17,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759284557] [2023-09-01 12:58:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:17,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:17,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:17,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759284557] [2023-09-01 12:58:17,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759284557] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:17,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:17,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:58:17,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034477993] [2023-09-01 12:58:17,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:17,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:58:17,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:17,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:58:17,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:58:17,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 244 [2023-09-01 12:58:17,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 191 transitions, 2354 flow. Second operand has 8 states, 8 states have (on average 115.625) internal successors, (925), 8 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:17,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:17,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 244 [2023-09-01 12:58:17,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:18,437 INFO L130 PetriNetUnfolder]: 3082/5856 cut-off events. [2023-09-01 12:58:18,437 INFO L131 PetriNetUnfolder]: For 37826/39306 co-relation queries the response was YES. [2023-09-01 12:58:18,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27626 conditions, 5856 events. 3082/5856 cut-off events. For 37826/39306 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 42322 event pairs, 564 based on Foata normal form. 674/6450 useless extension candidates. Maximal degree in co-relation 17230. Up to 3290 conditions per place. [2023-09-01 12:58:18,474 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 184 selfloop transitions, 93 changer transitions 4/298 dead transitions. [2023-09-01 12:58:18,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 298 transitions, 3844 flow [2023-09-01 12:58:18,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 12:58:18,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 12:58:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1353 transitions. [2023-09-01 12:58:18,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040983606557377 [2023-09-01 12:58:18,480 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1353 transitions. [2023-09-01 12:58:18,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1353 transitions. [2023-09-01 12:58:18,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:18,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1353 transitions. [2023-09-01 12:58:18,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 123.0) internal successors, (1353), 11 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:18,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 244.0) internal successors, (2928), 12 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:18,489 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 244.0) internal successors, (2928), 12 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:18,489 INFO L175 Difference]: Start difference. First operand has 86 places, 191 transitions, 2354 flow. Second operand 11 states and 1353 transitions. [2023-09-01 12:58:18,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 298 transitions, 3844 flow [2023-09-01 12:58:18,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 298 transitions, 3697 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 12:58:18,530 INFO L231 Difference]: Finished difference. Result has 97 places, 226 transitions, 3035 flow [2023-09-01 12:58:18,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=2243, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3035, PETRI_PLACES=97, PETRI_TRANSITIONS=226} [2023-09-01 12:58:18,531 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 50 predicate places. [2023-09-01 12:58:18,531 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 226 transitions, 3035 flow [2023-09-01 12:58:18,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.625) internal successors, (925), 8 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:18,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:18,532 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] [2023-09-01 12:58:18,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 12:58:18,532 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 2 more)] === [2023-09-01 12:58:18,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:18,533 INFO L85 PathProgramCache]: Analyzing trace with hash 488580814, now seen corresponding path program 10 times [2023-09-01 12:58:18,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:18,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940560956] [2023-09-01 12:58:18,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:18,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:18,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:18,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940560956] [2023-09-01 12:58:18,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940560956] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:18,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:18,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:58:18,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353451629] [2023-09-01 12:58:18,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:18,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:58:18,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:18,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:58:18,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:58:18,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 244 [2023-09-01 12:58:18,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 226 transitions, 3035 flow. Second operand has 7 states, 7 states have (on average 116.14285714285714) internal successors, (813), 7 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:18,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:18,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 244 [2023-09-01 12:58:18,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:19,546 INFO L130 PetriNetUnfolder]: 3335/6411 cut-off events. [2023-09-01 12:58:19,546 INFO L131 PetriNetUnfolder]: For 48553/50375 co-relation queries the response was YES. [2023-09-01 12:58:19,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31177 conditions, 6411 events. 3335/6411 cut-off events. For 48553/50375 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 48006 event pairs, 455 based on Foata normal form. 1044/7357 useless extension candidates. Maximal degree in co-relation 18828. Up to 2888 conditions per place. [2023-09-01 12:58:19,581 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 180 selfloop transitions, 117 changer transitions 4/318 dead transitions. [2023-09-01 12:58:19,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 318 transitions, 4320 flow [2023-09-01 12:58:19,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:58:19,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:58:19,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1127 transitions. [2023-09-01 12:58:19,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132058287795993 [2023-09-01 12:58:19,584 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1127 transitions. [2023-09-01 12:58:19,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1127 transitions. [2023-09-01 12:58:19,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:19,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1127 transitions. [2023-09-01 12:58:19,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.22222222222223) internal successors, (1127), 9 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:19,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:19,591 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:19,591 INFO L175 Difference]: Start difference. First operand has 97 places, 226 transitions, 3035 flow. Second operand 9 states and 1127 transitions. [2023-09-01 12:58:19,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 318 transitions, 4320 flow [2023-09-01 12:58:19,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 318 transitions, 4179 flow, removed 41 selfloop flow, removed 3 redundant places. [2023-09-01 12:58:19,657 INFO L231 Difference]: Finished difference. Result has 105 places, 251 transitions, 3707 flow [2023-09-01 12:58:19,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=2906, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3707, PETRI_PLACES=105, PETRI_TRANSITIONS=251} [2023-09-01 12:58:19,658 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 58 predicate places. [2023-09-01 12:58:19,658 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 251 transitions, 3707 flow [2023-09-01 12:58:19,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.14285714285714) internal successors, (813), 7 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:19,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:19,658 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] [2023-09-01 12:58:19,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 12:58:19,659 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 2 more)] === [2023-09-01 12:58:19,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:19,659 INFO L85 PathProgramCache]: Analyzing trace with hash 551606176, now seen corresponding path program 11 times [2023-09-01 12:58:19,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:19,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017993090] [2023-09-01 12:58:19,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:19,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:19,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:19,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:19,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017993090] [2023-09-01 12:58:19,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017993090] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:19,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:19,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:58:19,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630810522] [2023-09-01 12:58:19,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:19,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:58:19,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:19,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:58:19,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:58:19,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 244 [2023-09-01 12:58:19,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 251 transitions, 3707 flow. Second operand has 8 states, 8 states have (on average 115.625) internal successors, (925), 8 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:19,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:19,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 244 [2023-09-01 12:58:19,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:20,823 INFO L130 PetriNetUnfolder]: 3353/6469 cut-off events. [2023-09-01 12:58:20,823 INFO L131 PetriNetUnfolder]: For 62825/64829 co-relation queries the response was YES. [2023-09-01 12:58:20,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34159 conditions, 6469 events. 3353/6469 cut-off events. For 62825/64829 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 48763 event pairs, 862 based on Foata normal form. 626/7031 useless extension candidates. Maximal degree in co-relation 20532. Up to 4844 conditions per place. [2023-09-01 12:58:20,882 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 243 selfloop transitions, 57 changer transitions 4/321 dead transitions. [2023-09-01 12:58:20,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 321 transitions, 4817 flow [2023-09-01 12:58:20,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 12:58:20,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 12:58:20,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1460 transitions. [2023-09-01 12:58:20,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49863387978142076 [2023-09-01 12:58:20,888 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1460 transitions. [2023-09-01 12:58:20,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1460 transitions. [2023-09-01 12:58:20,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:20,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1460 transitions. [2023-09-01 12:58:20,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 121.66666666666667) internal successors, (1460), 12 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:20,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:20,898 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:20,898 INFO L175 Difference]: Start difference. First operand has 105 places, 251 transitions, 3707 flow. Second operand 12 states and 1460 transitions. [2023-09-01 12:58:20,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 321 transitions, 4817 flow [2023-09-01 12:58:20,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 321 transitions, 4808 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 12:58:20,976 INFO L231 Difference]: Finished difference. Result has 115 places, 256 transitions, 3927 flow [2023-09-01 12:58:20,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=3698, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3927, PETRI_PLACES=115, PETRI_TRANSITIONS=256} [2023-09-01 12:58:20,977 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 68 predicate places. [2023-09-01 12:58:20,978 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 256 transitions, 3927 flow [2023-09-01 12:58:20,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.625) internal successors, (925), 8 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:20,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:20,978 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] [2023-09-01 12:58:20,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 12:58:20,980 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 2 more)] === [2023-09-01 12:58:20,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:20,980 INFO L85 PathProgramCache]: Analyzing trace with hash -374855666, now seen corresponding path program 12 times [2023-09-01 12:58:20,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:20,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106017966] [2023-09-01 12:58:20,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:20,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:21,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:21,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:21,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106017966] [2023-09-01 12:58:21,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106017966] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:21,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:21,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:58:21,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073671661] [2023-09-01 12:58:21,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:21,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:58:21,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:21,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:58:21,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:58:21,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 244 [2023-09-01 12:58:21,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 256 transitions, 3927 flow. Second operand has 8 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:21,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:21,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 244 [2023-09-01 12:58:21,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:22,167 INFO L130 PetriNetUnfolder]: 3384/6521 cut-off events. [2023-09-01 12:58:22,167 INFO L131 PetriNetUnfolder]: For 66471/68807 co-relation queries the response was YES. [2023-09-01 12:58:22,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35231 conditions, 6521 events. 3384/6521 cut-off events. For 66471/68807 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 49827 event pairs, 257 based on Foata normal form. 1482/7863 useless extension candidates. Maximal degree in co-relation 20878. Up to 2024 conditions per place. [2023-09-01 12:58:22,211 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 84 selfloop transitions, 216 changer transitions 2/319 dead transitions. [2023-09-01 12:58:22,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 319 transitions, 4858 flow [2023-09-01 12:58:22,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:58:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:58:22,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1146 transitions. [2023-09-01 12:58:22,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5218579234972678 [2023-09-01 12:58:22,215 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1146 transitions. [2023-09-01 12:58:22,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1146 transitions. [2023-09-01 12:58:22,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:22,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1146 transitions. [2023-09-01 12:58:22,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 127.33333333333333) internal successors, (1146), 9 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:22,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:22,221 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:22,221 INFO L175 Difference]: Start difference. First operand has 115 places, 256 transitions, 3927 flow. Second operand 9 states and 1146 transitions. [2023-09-01 12:58:22,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 319 transitions, 4858 flow [2023-09-01 12:58:22,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 319 transitions, 4755 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-09-01 12:58:22,325 INFO L231 Difference]: Finished difference. Result has 116 places, 258 transitions, 4292 flow [2023-09-01 12:58:22,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4292, PETRI_PLACES=116, PETRI_TRANSITIONS=258} [2023-09-01 12:58:22,326 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 69 predicate places. [2023-09-01 12:58:22,326 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 258 transitions, 4292 flow [2023-09-01 12:58:22,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:22,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:22,327 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] [2023-09-01 12:58:22,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 12:58:22,327 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 2 more)] === [2023-09-01 12:58:22,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:22,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1489114192, now seen corresponding path program 13 times [2023-09-01 12:58:22,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:22,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970034163] [2023-09-01 12:58:22,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:22,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:22,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:22,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:22,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970034163] [2023-09-01 12:58:22,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970034163] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:22,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:22,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:58:22,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867285697] [2023-09-01 12:58:22,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:22,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:58:22,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:22,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:58:22,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:58:22,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 244 [2023-09-01 12:58:22,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 258 transitions, 4292 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:22,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:22,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 244 [2023-09-01 12:58:22,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:23,439 INFO L130 PetriNetUnfolder]: 3219/6367 cut-off events. [2023-09-01 12:58:23,439 INFO L131 PetriNetUnfolder]: For 77354/79293 co-relation queries the response was YES. [2023-09-01 12:58:23,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36618 conditions, 6367 events. 3219/6367 cut-off events. For 77354/79293 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 49900 event pairs, 333 based on Foata normal form. 1143/7376 useless extension candidates. Maximal degree in co-relation 21824. Up to 1823 conditions per place. [2023-09-01 12:58:23,481 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 109 selfloop transitions, 209 changer transitions 13/348 dead transitions. [2023-09-01 12:58:23,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 348 transitions, 5653 flow [2023-09-01 12:58:23,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:58:23,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:58:23,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1047 transitions. [2023-09-01 12:58:23,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363729508196722 [2023-09-01 12:58:23,484 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1047 transitions. [2023-09-01 12:58:23,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1047 transitions. [2023-09-01 12:58:23,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:23,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1047 transitions. [2023-09-01 12:58:23,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.875) internal successors, (1047), 8 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:23,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:23,490 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:23,490 INFO L175 Difference]: Start difference. First operand has 116 places, 258 transitions, 4292 flow. Second operand 8 states and 1047 transitions. [2023-09-01 12:58:23,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 348 transitions, 5653 flow [2023-09-01 12:58:23,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 348 transitions, 5177 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 12:58:23,580 INFO L231 Difference]: Finished difference. Result has 118 places, 267 transitions, 4500 flow [2023-09-01 12:58:23,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=3856, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4500, PETRI_PLACES=118, PETRI_TRANSITIONS=267} [2023-09-01 12:58:23,581 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 71 predicate places. [2023-09-01 12:58:23,581 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 267 transitions, 4500 flow [2023-09-01 12:58:23,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:23,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:23,581 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, 1] [2023-09-01 12:58:23,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 12:58:23,582 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 2 more)] === [2023-09-01 12:58:23,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:23,582 INFO L85 PathProgramCache]: Analyzing trace with hash -896967632, now seen corresponding path program 14 times [2023-09-01 12:58:23,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:23,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126552866] [2023-09-01 12:58:23,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:23,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:23,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:23,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:23,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126552866] [2023-09-01 12:58:23,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126552866] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:23,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:23,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:58:23,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456133179] [2023-09-01 12:58:23,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:23,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:58:23,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:23,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:58:23,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:58:23,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 244 [2023-09-01 12:58:23,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 267 transitions, 4500 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:23,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:23,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 244 [2023-09-01 12:58:23,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:24,460 INFO L130 PetriNetUnfolder]: 2314/4809 cut-off events. [2023-09-01 12:58:24,460 INFO L131 PetriNetUnfolder]: For 58336/59966 co-relation queries the response was YES. [2023-09-01 12:58:24,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28042 conditions, 4809 events. 2314/4809 cut-off events. For 58336/59966 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 37187 event pairs, 234 based on Foata normal form. 1077/5836 useless extension candidates. Maximal degree in co-relation 20332. Up to 1316 conditions per place. [2023-09-01 12:58:24,494 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 108 selfloop transitions, 192 changer transitions 54/371 dead transitions. [2023-09-01 12:58:24,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 371 transitions, 6401 flow [2023-09-01 12:58:24,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:58:24,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:58:24,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1041 transitions. [2023-09-01 12:58:24,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5332991803278688 [2023-09-01 12:58:24,497 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1041 transitions. [2023-09-01 12:58:24,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1041 transitions. [2023-09-01 12:58:24,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:24,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1041 transitions. [2023-09-01 12:58:24,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.125) internal successors, (1041), 8 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:24,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:24,503 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:24,503 INFO L175 Difference]: Start difference. First operand has 118 places, 267 transitions, 4500 flow. Second operand 8 states and 1041 transitions. [2023-09-01 12:58:24,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 371 transitions, 6401 flow [2023-09-01 12:58:24,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 371 transitions, 6049 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-09-01 12:58:24,577 INFO L231 Difference]: Finished difference. Result has 123 places, 251 transitions, 4430 flow [2023-09-01 12:58:24,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=4118, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4430, PETRI_PLACES=123, PETRI_TRANSITIONS=251} [2023-09-01 12:58:24,578 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 76 predicate places. [2023-09-01 12:58:24,578 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 251 transitions, 4430 flow [2023-09-01 12:58:24,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:24,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:24,578 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] [2023-09-01 12:58:24,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 12:58:24,579 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 2 more)] === [2023-09-01 12:58:24,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:24,579 INFO L85 PathProgramCache]: Analyzing trace with hash -707740490, now seen corresponding path program 15 times [2023-09-01 12:58:24,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:24,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153251271] [2023-09-01 12:58:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:24,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:24,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:24,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:24,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153251271] [2023-09-01 12:58:24,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153251271] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:24,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:24,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:58:24,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028044035] [2023-09-01 12:58:24,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:24,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:58:24,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:24,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:58:24,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:58:24,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 244 [2023-09-01 12:58:24,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 251 transitions, 4430 flow. Second operand has 8 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:24,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:24,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 244 [2023-09-01 12:58:24,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:25,462 INFO L130 PetriNetUnfolder]: 2028/4303 cut-off events. [2023-09-01 12:58:25,462 INFO L131 PetriNetUnfolder]: For 53677/54805 co-relation queries the response was YES. [2023-09-01 12:58:25,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25392 conditions, 4303 events. 2028/4303 cut-off events. For 53677/54805 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 33050 event pairs, 163 based on Foata normal form. 720/4971 useless extension candidates. Maximal degree in co-relation 17761. Up to 1222 conditions per place. [2023-09-01 12:58:25,501 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 88 selfloop transitions, 195 changer transitions 29/329 dead transitions. [2023-09-01 12:58:25,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 329 transitions, 5667 flow [2023-09-01 12:58:25,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:58:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:58:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1152 transitions. [2023-09-01 12:58:25,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245901639344263 [2023-09-01 12:58:25,503 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1152 transitions. [2023-09-01 12:58:25,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1152 transitions. [2023-09-01 12:58:25,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:25,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1152 transitions. [2023-09-01 12:58:25,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:25,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:25,508 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:25,509 INFO L175 Difference]: Start difference. First operand has 123 places, 251 transitions, 4430 flow. Second operand 9 states and 1152 transitions. [2023-09-01 12:58:25,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 329 transitions, 5667 flow [2023-09-01 12:58:25,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 329 transitions, 5417 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 12:58:25,595 INFO L231 Difference]: Finished difference. Result has 127 places, 238 transitions, 4294 flow [2023-09-01 12:58:25,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=4194, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4294, PETRI_PLACES=127, PETRI_TRANSITIONS=238} [2023-09-01 12:58:25,596 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 80 predicate places. [2023-09-01 12:58:25,596 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 238 transitions, 4294 flow [2023-09-01 12:58:25,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:25,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:25,597 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] [2023-09-01 12:58:25,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 12:58:25,598 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 2 more)] === [2023-09-01 12:58:25,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:25,598 INFO L85 PathProgramCache]: Analyzing trace with hash -975116384, now seen corresponding path program 16 times [2023-09-01 12:58:25,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:25,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514411342] [2023-09-01 12:58:25,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:25,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:25,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:25,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514411342] [2023-09-01 12:58:25,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514411342] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:25,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:25,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:58:25,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463251976] [2023-09-01 12:58:25,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:25,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:58:25,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:25,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:58:25,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:58:25,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 244 [2023-09-01 12:58:25,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 238 transitions, 4294 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:25,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:25,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 244 [2023-09-01 12:58:25,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:26,504 INFO L130 PetriNetUnfolder]: 1845/3962 cut-off events. [2023-09-01 12:58:26,504 INFO L131 PetriNetUnfolder]: For 56792/57858 co-relation queries the response was YES. [2023-09-01 12:58:26,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23740 conditions, 3962 events. 1845/3962 cut-off events. For 56792/57858 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 30160 event pairs, 162 based on Foata normal form. 662/4575 useless extension candidates. Maximal degree in co-relation 16125. Up to 1139 conditions per place. [2023-09-01 12:58:26,530 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 93 selfloop transitions, 193 changer transitions 14/317 dead transitions. [2023-09-01 12:58:26,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 317 transitions, 5390 flow [2023-09-01 12:58:26,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 12:58:26,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 12:58:26,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1513 transitions. [2023-09-01 12:58:26,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167349726775956 [2023-09-01 12:58:26,533 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1513 transitions. [2023-09-01 12:58:26,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1513 transitions. [2023-09-01 12:58:26,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:26,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1513 transitions. [2023-09-01 12:58:26,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 126.08333333333333) internal successors, (1513), 12 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:26,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:26,539 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:26,540 INFO L175 Difference]: Start difference. First operand has 127 places, 238 transitions, 4294 flow. Second operand 12 states and 1513 transitions. [2023-09-01 12:58:26,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 317 transitions, 5390 flow [2023-09-01 12:58:26,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 317 transitions, 5148 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-09-01 12:58:26,620 INFO L231 Difference]: Finished difference. Result has 135 places, 235 transitions, 4356 flow [2023-09-01 12:58:26,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=4071, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4356, PETRI_PLACES=135, PETRI_TRANSITIONS=235} [2023-09-01 12:58:26,621 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 88 predicate places. [2023-09-01 12:58:26,621 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 235 transitions, 4356 flow [2023-09-01 12:58:26,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:26,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:26,622 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] [2023-09-01 12:58:26,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 12:58:26,622 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 2 more)] === [2023-09-01 12:58:26,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:26,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1268936102, now seen corresponding path program 17 times [2023-09-01 12:58:26,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:26,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328502678] [2023-09-01 12:58:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:26,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:26,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:26,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328502678] [2023-09-01 12:58:26,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328502678] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:26,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:26,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:58:26,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252416399] [2023-09-01 12:58:26,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:26,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:58:26,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:26,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:58:26,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:58:26,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 244 [2023-09-01 12:58:26,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 235 transitions, 4356 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:26,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:26,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 244 [2023-09-01 12:58:26,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:27,580 INFO L130 PetriNetUnfolder]: 1851/3991 cut-off events. [2023-09-01 12:58:27,580 INFO L131 PetriNetUnfolder]: For 65059/66101 co-relation queries the response was YES. [2023-09-01 12:58:27,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24505 conditions, 3991 events. 1851/3991 cut-off events. For 65059/66101 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 30554 event pairs, 171 based on Foata normal form. 632/4570 useless extension candidates. Maximal degree in co-relation 16663. Up to 1143 conditions per place. [2023-09-01 12:58:27,602 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 83 selfloop transitions, 183 changer transitions 40/323 dead transitions. [2023-09-01 12:58:27,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 323 transitions, 5771 flow [2023-09-01 12:58:27,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 12:58:27,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 12:58:27,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1514 transitions. [2023-09-01 12:58:27,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170765027322405 [2023-09-01 12:58:27,605 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1514 transitions. [2023-09-01 12:58:27,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1514 transitions. [2023-09-01 12:58:27,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:27,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1514 transitions. [2023-09-01 12:58:27,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 126.16666666666667) internal successors, (1514), 12 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:27,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:27,611 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:27,611 INFO L175 Difference]: Start difference. First operand has 135 places, 235 transitions, 4356 flow. Second operand 12 states and 1514 transitions. [2023-09-01 12:58:27,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 323 transitions, 5771 flow [2023-09-01 12:58:27,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 323 transitions, 5351 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-09-01 12:58:27,694 INFO L231 Difference]: Finished difference. Result has 139 places, 225 transitions, 4138 flow [2023-09-01 12:58:27,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=3962, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4138, PETRI_PLACES=139, PETRI_TRANSITIONS=225} [2023-09-01 12:58:27,694 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 92 predicate places. [2023-09-01 12:58:27,695 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 225 transitions, 4138 flow [2023-09-01 12:58:27,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:27,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:27,695 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] [2023-09-01 12:58:27,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 12:58:27,696 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 2 more)] === [2023-09-01 12:58:27,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:27,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1959702774, now seen corresponding path program 18 times [2023-09-01 12:58:27,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:27,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821059540] [2023-09-01 12:58:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:27,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:27,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:27,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:27,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821059540] [2023-09-01 12:58:27,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821059540] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:27,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:27,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:58:27,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14165029] [2023-09-01 12:58:27,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:27,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:58:27,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:27,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:58:27,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:58:27,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 244 [2023-09-01 12:58:27,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 225 transitions, 4138 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:27,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:27,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 244 [2023-09-01 12:58:27,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:28,525 INFO L130 PetriNetUnfolder]: 1422/3164 cut-off events. [2023-09-01 12:58:28,525 INFO L131 PetriNetUnfolder]: For 49418/50256 co-relation queries the response was YES. [2023-09-01 12:58:28,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19798 conditions, 3164 events. 1422/3164 cut-off events. For 49418/50256 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 23579 event pairs, 139 based on Foata normal form. 570/3694 useless extension candidates. Maximal degree in co-relation 13989. Up to 911 conditions per place. [2023-09-01 12:58:28,545 INFO L137 encePairwiseOnDemand]: 234/244 looper letters, 85 selfloop transitions, 146 changer transitions 51/296 dead transitions. [2023-09-01 12:58:28,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 296 transitions, 5142 flow [2023-09-01 12:58:28,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 12:58:28,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 12:58:28,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1510 transitions. [2023-09-01 12:58:28,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157103825136612 [2023-09-01 12:58:28,547 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1510 transitions. [2023-09-01 12:58:28,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1510 transitions. [2023-09-01 12:58:28,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:28,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1510 transitions. [2023-09-01 12:58:28,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 125.83333333333333) internal successors, (1510), 12 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:28,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:28,553 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:28,553 INFO L175 Difference]: Start difference. First operand has 139 places, 225 transitions, 4138 flow. Second operand 12 states and 1510 transitions. [2023-09-01 12:58:28,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 296 transitions, 5142 flow [2023-09-01 12:58:28,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 296 transitions, 4752 flow, removed 11 selfloop flow, removed 10 redundant places. [2023-09-01 12:58:28,629 INFO L231 Difference]: Finished difference. Result has 138 places, 183 transitions, 3252 flow [2023-09-01 12:58:28,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=3479, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3252, PETRI_PLACES=138, PETRI_TRANSITIONS=183} [2023-09-01 12:58:28,629 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 91 predicate places. [2023-09-01 12:58:28,630 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 183 transitions, 3252 flow [2023-09-01 12:58:28,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:28,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:28,630 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] [2023-09-01 12:58:28,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 12:58:28,631 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 2 more)] === [2023-09-01 12:58:28,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:28,631 INFO L85 PathProgramCache]: Analyzing trace with hash 224756250, now seen corresponding path program 19 times [2023-09-01 12:58:28,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:28,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814674951] [2023-09-01 12:58:28,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:28,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:28,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:28,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:28,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814674951] [2023-09-01 12:58:28,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814674951] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:28,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:28,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:58:28,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355046649] [2023-09-01 12:58:28,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:28,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:58:28,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:28,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:58:28,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:58:28,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 244 [2023-09-01 12:58:28,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 183 transitions, 3252 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:28,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:28,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 244 [2023-09-01 12:58:28,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:29,043 INFO L130 PetriNetUnfolder]: 271/644 cut-off events. [2023-09-01 12:58:29,043 INFO L131 PetriNetUnfolder]: For 10733/10865 co-relation queries the response was YES. [2023-09-01 12:58:29,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4881 conditions, 644 events. 271/644 cut-off events. For 10733/10865 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3870 event pairs, 5 based on Foata normal form. 166/810 useless extension candidates. Maximal degree in co-relation 4754. Up to 149 conditions per place. [2023-09-01 12:58:29,048 INFO L137 encePairwiseOnDemand]: 236/244 looper letters, 0 selfloop transitions, 0 changer transitions 120/120 dead transitions. [2023-09-01 12:58:29,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 120 transitions, 2211 flow [2023-09-01 12:58:29,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 12:58:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 12:58:29,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1448 transitions. [2023-09-01 12:58:29,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49453551912568305 [2023-09-01 12:58:29,050 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1448 transitions. [2023-09-01 12:58:29,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1448 transitions. [2023-09-01 12:58:29,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:29,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1448 transitions. [2023-09-01 12:58:29,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 120.66666666666667) internal successors, (1448), 12 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:29,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:29,056 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:29,056 INFO L175 Difference]: Start difference. First operand has 138 places, 183 transitions, 3252 flow. Second operand 12 states and 1448 transitions. [2023-09-01 12:58:29,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 120 transitions, 2211 flow [2023-09-01 12:58:29,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 120 transitions, 1975 flow, removed 40 selfloop flow, removed 17 redundant places. [2023-09-01 12:58:29,075 INFO L231 Difference]: Finished difference. Result has 114 places, 0 transitions, 0 flow [2023-09-01 12:58:29,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=114, PETRI_TRANSITIONS=0} [2023-09-01 12:58:29,076 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 67 predicate places. [2023-09-01 12:58:29,076 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 0 transitions, 0 flow [2023-09-01 12:58:29,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:58:29,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-09-01 12:58:29,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-09-01 12:58:29,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-09-01 12:58:29,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-09-01 12:58:29,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-09-01 12:58:29,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 12:58:29,081 INFO L445 BasicCegarLoop]: Path program histogram: [19] [2023-09-01 12:58:29,083 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 12:58:29,084 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 12:58:29,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 12:58:29 BasicIcfg [2023-09-01 12:58:29,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 12:58:29,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 12:58:29,087 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 12:58:29,087 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 12:58:29,087 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:58:02" (3/4) ... [2023-09-01 12:58:29,089 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 12:58:29,094 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 12:58:29,094 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 12:58:29,094 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 12:58:29,094 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-09-01 12:58:29,098 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-09-01 12:58:29,099 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 12:58:29,099 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 12:58:29,099 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 12:58:29,137 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 12:58:29,138 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 12:58:29,138 INFO L158 Benchmark]: Toolchain (without parser) took 27617.48ms. Allocated memory was 71.3MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 48.1MB in the beginning and 721.7MB in the end (delta: -673.6MB). Peak memory consumption was 725.2MB. Max. memory is 16.1GB. [2023-09-01 12:58:29,138 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 71.3MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 12:58:29,139 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.15ms. Allocated memory is still 71.3MB. Free memory was 48.0MB in the beginning and 36.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 12:58:29,139 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.93ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 36.4MB in the beginning and 68.8MB in the end (delta: -32.4MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2023-09-01 12:58:29,139 INFO L158 Benchmark]: Boogie Preprocessor took 50.41ms. Allocated memory is still 88.1MB. Free memory was 68.8MB in the beginning and 67.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 12:58:29,139 INFO L158 Benchmark]: RCFGBuilder took 543.00ms. Allocated memory is still 88.1MB. Free memory was 67.3MB in the beginning and 44.3MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-09-01 12:58:29,140 INFO L158 Benchmark]: TraceAbstraction took 26592.32ms. Allocated memory was 88.1MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 66.5MB in the beginning and 724.9MB in the end (delta: -658.4MB). Peak memory consumption was 719.9MB. Max. memory is 16.1GB. [2023-09-01 12:58:29,142 INFO L158 Benchmark]: Witness Printer took 51.37ms. Allocated memory is still 1.5GB. Free memory was 724.9MB in the beginning and 721.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 12:58:29,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 71.3MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.15ms. Allocated memory is still 71.3MB. Free memory was 48.0MB in the beginning and 36.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.93ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 36.4MB in the beginning and 68.8MB in the end (delta: -32.4MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.41ms. Allocated memory is still 88.1MB. Free memory was 68.8MB in the beginning and 67.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 543.00ms. Allocated memory is still 88.1MB. Free memory was 67.3MB in the beginning and 44.3MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 26592.32ms. Allocated memory was 88.1MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 66.5MB in the beginning and 724.9MB in the end (delta: -658.4MB). Peak memory consumption was 719.9MB. Max. memory is 16.1GB. * Witness Printer took 51.37ms. Allocated memory is still 1.5GB. Free memory was 724.9MB in the beginning and 721.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 138 PlacesBefore, 47 PlacesAfterwards, 127 TransitionsBefore, 34 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 8 FixpointIterations, 69 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 101 TotalNumberOfCompositions, 7253 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2918, independent: 2652, independent conditional: 0, independent unconditional: 2652, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 625, independent: 600, independent conditional: 0, independent unconditional: 600, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2918, independent: 2052, independent conditional: 0, independent unconditional: 2052, dependent: 241, dependent conditional: 0, dependent unconditional: 241, unknown: 625, unknown conditional: 0, unknown unconditional: 625] , Statistics on independence cache: Total cache size (in pairs): 152, Positive cache size: 138, Positive conditional cache size: 0, Positive unconditional cache size: 138, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 146]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 175 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 26.5s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 17.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1429 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1335 mSDsluCounter, 191 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 174 mSDsCounter, 400 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5803 IncrementalHoareTripleChecker+Invalid, 6203 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 400 mSolverCounterUnsat, 17 mSDtfsCounter, 5803 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4500occurred in iteration=13, InterpolantAutomatonStates: 165, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 646 NumberOfCodeBlocks, 646 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 627 ConstructedInterpolants, 0 QuantifiedInterpolants, 2006 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 12:58:29,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE