./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-match-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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 ../sv-benchmarks/c/weaver/chl-match-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:25:51,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:25:51,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:25:51,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:25:51,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:25:51,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:25:51,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:25:51,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:25:51,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:25:51,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:25:51,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:25:51,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:25:51,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:25:51,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:25:51,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:25:51,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:25:51,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:25:51,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:25:51,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:25:51,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:25:51,832 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:25:51,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:25:51,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:25:51,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:25:51,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:25:51,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:25:51,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:25:51,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:25:51,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:25:51,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:25:51,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:25:51,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:25:51,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:25:51,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:25:51,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:25:51,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:25:51,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:25:51,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:25:51,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:25:51,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:25:51,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:25:51,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:25:51,855 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:25:51,884 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:25:51,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:25:51,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:25:51,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:25:51,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:25:51,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:25:51,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:25:51,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:25:51,887 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:25:51,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:25:51,888 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:25:51,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:25:51,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:25:51,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:25:51,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:25:51,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:25:51,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:25:51,889 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:25:51,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:25:51,890 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:25:51,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:25:51,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:25:51,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:25:51,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:25:51,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:51,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:25:51,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:25:51,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:25:51,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:25:51,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:25:51,892 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:25:51,892 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:25:51,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:25:51,893 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa [2022-07-19 21:25:52,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:25:52,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:25:52,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:25:52,127 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:25:52,128 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:25:52,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2022-07-19 21:25:52,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd98cdef/1822d5324e1140b5852189914139d6a3/FLAG3c314abc5 [2022-07-19 21:25:52,546 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:25:52,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2022-07-19 21:25:52,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd98cdef/1822d5324e1140b5852189914139d6a3/FLAG3c314abc5 [2022-07-19 21:25:52,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd98cdef/1822d5324e1140b5852189914139d6a3 [2022-07-19 21:25:52,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:25:52,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:25:52,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:52,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:25:52,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:25:52,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:52" (1/1) ... [2022-07-19 21:25:52,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@619cd729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:52, skipping insertion in model container [2022-07-19 21:25:52,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:52" (1/1) ... [2022-07-19 21:25:52,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:25:52,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:25:52,727 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-subst.wvr.c[3017,3030] [2022-07-19 21:25:52,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:52,738 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:25:52,759 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-subst.wvr.c[3017,3030] [2022-07-19 21:25:52,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:52,772 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:25:52,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:52 WrapperNode [2022-07-19 21:25:52,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:52,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:52,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:25:52,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:25:52,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:52" (1/1) ... [2022-07-19 21:25:52,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:52" (1/1) ... [2022-07-19 21:25:52,808 INFO L137 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 254 [2022-07-19 21:25:52,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:52,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:25:52,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:25:52,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:25:52,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:52" (1/1) ... [2022-07-19 21:25:52,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:52" (1/1) ... [2022-07-19 21:25:52,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:52" (1/1) ... [2022-07-19 21:25:52,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:52" (1/1) ... [2022-07-19 21:25:52,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:52" (1/1) ... [2022-07-19 21:25:52,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:52" (1/1) ... [2022-07-19 21:25:52,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:52" (1/1) ... [2022-07-19 21:25:52,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:25:52,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:25:52,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:25:52,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:25:52,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:52" (1/1) ... [2022-07-19 21:25:52,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:52,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:52,872 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) [2022-07-19 21:25:52,896 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 [2022-07-19 21:25:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:25:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:25:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:25:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:25:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:25:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:25:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:25:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:25:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:25:52,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:25:52,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:25:52,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:25:52,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:25:52,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:25:52,922 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:25:53,015 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:25:53,016 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:25:53,355 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:25:53,367 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:25:53,367 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:25:53,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:25:53 BoogieIcfgContainer [2022-07-19 21:25:53,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:25:53,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:25:53,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:25:53,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:25:53,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:25:52" (1/3) ... [2022-07-19 21:25:53,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbc654d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:25:53, skipping insertion in model container [2022-07-19 21:25:53,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:52" (2/3) ... [2022-07-19 21:25:53,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbc654d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:25:53, skipping insertion in model container [2022-07-19 21:25:53,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:25:53" (3/3) ... [2022-07-19 21:25:53,376 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2022-07-19 21:25:53,380 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:25:53,397 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:25:53,397 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:25:53,397 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:25:53,517 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-19 21:25:53,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 333 places, 349 transitions, 722 flow [2022-07-19 21:25:53,726 INFO L129 PetriNetUnfolder]: 26/346 cut-off events. [2022-07-19 21:25:53,727 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:25:53,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 346 events. 26/346 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 635 event pairs, 0 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 256. Up to 2 conditions per place. [2022-07-19 21:25:53,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 333 places, 349 transitions, 722 flow [2022-07-19 21:25:53,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 319 places, 335 transitions, 688 flow [2022-07-19 21:25:53,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:25:53,763 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@65dfb2c0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4cf3a23c [2022-07-19 21:25:53,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:25:53,834 INFO L129 PetriNetUnfolder]: 26/334 cut-off events. [2022-07-19 21:25:53,834 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:25:53,834 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:53,835 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:53,836 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:53,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:53,840 INFO L85 PathProgramCache]: Analyzing trace with hash -742994273, now seen corresponding path program 1 times [2022-07-19 21:25:53,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:53,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687486817] [2022-07-19 21:25:53,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:53,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:54,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:54,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:54,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687486817] [2022-07-19 21:25:54,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687486817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:54,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:54,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:25:54,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26060223] [2022-07-19 21:25:54,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:54,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:25:54,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:54,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:25:54,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:25:54,500 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 349 [2022-07-19 21:25:54,506 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 335 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:54,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 349 [2022-07-19 21:25:54,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:54,741 INFO L129 PetriNetUnfolder]: 31/543 cut-off events. [2022-07-19 21:25:54,742 INFO L130 PetriNetUnfolder]: For 33/39 co-relation queries the response was YES. [2022-07-19 21:25:54,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 543 events. 31/543 cut-off events. For 33/39 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1615 event pairs, 6 based on Foata normal form. 78/573 useless extension candidates. Maximal degree in co-relation 509. Up to 31 conditions per place. [2022-07-19 21:25:54,752 INFO L132 encePairwiseOnDemand]: 327/349 looper letters, 26 selfloop transitions, 3 changer transitions 7/336 dead transitions. [2022-07-19 21:25:54,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 336 transitions, 789 flow [2022-07-19 21:25:54,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:25:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:25:54,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2580 transitions. [2022-07-19 21:25:54,771 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9240687679083095 [2022-07-19 21:25:54,772 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2580 transitions. [2022-07-19 21:25:54,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2580 transitions. [2022-07-19 21:25:54,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:54,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2580 transitions. [2022-07-19 21:25:54,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 322.5) internal successors, (2580), 8 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 349.0) internal successors, (3141), 9 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,799 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 349.0) internal successors, (3141), 9 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,801 INFO L186 Difference]: Start difference. First operand has 319 places, 335 transitions, 688 flow. Second operand 8 states and 2580 transitions. [2022-07-19 21:25:54,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 336 transitions, 789 flow [2022-07-19 21:25:54,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 336 transitions, 759 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-19 21:25:54,812 INFO L242 Difference]: Finished difference. Result has 325 places, 321 transitions, 669 flow [2022-07-19 21:25:54,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=669, PETRI_PLACES=325, PETRI_TRANSITIONS=321} [2022-07-19 21:25:54,817 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 6 predicate places. [2022-07-19 21:25:54,817 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 321 transitions, 669 flow [2022-07-19 21:25:54,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,818 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:54,819 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:54,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:25:54,819 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:54,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:54,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1186332343, now seen corresponding path program 1 times [2022-07-19 21:25:54,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:54,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557998926] [2022-07-19 21:25:54,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:54,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:55,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:55,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557998926] [2022-07-19 21:25:55,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557998926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:55,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:55,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:55,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885580557] [2022-07-19 21:25:55,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:55,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:55,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:55,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:55,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:55,039 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-19 21:25:55,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 321 transitions, 669 flow. Second operand has 7 states, 7 states have (on average 312.85714285714283) internal successors, (2190), 7 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:55,041 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-19 21:25:55,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:55,252 INFO L129 PetriNetUnfolder]: 54/751 cut-off events. [2022-07-19 21:25:55,252 INFO L130 PetriNetUnfolder]: For 26/44 co-relation queries the response was YES. [2022-07-19 21:25:55,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 751 events. 54/751 cut-off events. For 26/44 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3049 event pairs, 18 based on Foata normal form. 1/683 useless extension candidates. Maximal degree in co-relation 893. Up to 64 conditions per place. [2022-07-19 21:25:55,264 INFO L132 encePairwiseOnDemand]: 341/349 looper letters, 33 selfloop transitions, 5 changer transitions 6/341 dead transitions. [2022-07-19 21:25:55,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 341 transitions, 818 flow [2022-07-19 21:25:55,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:25:55,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:25:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2833 transitions. [2022-07-19 21:25:55,270 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9019420566698504 [2022-07-19 21:25:55,270 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2833 transitions. [2022-07-19 21:25:55,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2833 transitions. [2022-07-19 21:25:55,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:55,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2833 transitions. [2022-07-19 21:25:55,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 314.77777777777777) internal successors, (2833), 9 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 349.0) internal successors, (3490), 10 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,286 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 349.0) internal successors, (3490), 10 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,286 INFO L186 Difference]: Start difference. First operand has 325 places, 321 transitions, 669 flow. Second operand 9 states and 2833 transitions. [2022-07-19 21:25:55,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 341 transitions, 818 flow [2022-07-19 21:25:55,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 341 transitions, 811 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-07-19 21:25:55,294 INFO L242 Difference]: Finished difference. Result has 332 places, 323 transitions, 697 flow [2022-07-19 21:25:55,295 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=697, PETRI_PLACES=332, PETRI_TRANSITIONS=323} [2022-07-19 21:25:55,296 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 13 predicate places. [2022-07-19 21:25:55,296 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 323 transitions, 697 flow [2022-07-19 21:25:55,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.85714285714283) internal successors, (2190), 7 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,298 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:55,298 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:55,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:25:55,299 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:55,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:55,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1929877743, now seen corresponding path program 1 times [2022-07-19 21:25:55,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:55,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370561821] [2022-07-19 21:25:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:55,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:55,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:55,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370561821] [2022-07-19 21:25:55,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370561821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:55,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:55,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:25:55,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331915824] [2022-07-19 21:25:55,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:55,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:25:55,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:55,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:25:55,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:25:55,568 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 349 [2022-07-19 21:25:55,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 323 transitions, 697 flow. Second operand has 8 states, 8 states have (on average 309.75) internal successors, (2478), 8 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:55,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 349 [2022-07-19 21:25:55,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:55,883 INFO L129 PetriNetUnfolder]: 67/775 cut-off events. [2022-07-19 21:25:55,883 INFO L130 PetriNetUnfolder]: For 51/77 co-relation queries the response was YES. [2022-07-19 21:25:55,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 775 events. 67/775 cut-off events. For 51/77 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3249 event pairs, 26 based on Foata normal form. 1/704 useless extension candidates. Maximal degree in co-relation 1013. Up to 84 conditions per place. [2022-07-19 21:25:55,894 INFO L132 encePairwiseOnDemand]: 338/349 looper letters, 41 selfloop transitions, 8 changer transitions 8/351 dead transitions. [2022-07-19 21:25:55,894 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 351 transitions, 904 flow [2022-07-19 21:25:55,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:25:55,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-19 21:25:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3738 transitions. [2022-07-19 21:25:55,901 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8925501432664756 [2022-07-19 21:25:55,901 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3738 transitions. [2022-07-19 21:25:55,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3738 transitions. [2022-07-19 21:25:55,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:55,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3738 transitions. [2022-07-19 21:25:55,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 311.5) internal successors, (3738), 12 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,918 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,918 INFO L186 Difference]: Start difference. First operand has 332 places, 323 transitions, 697 flow. Second operand 12 states and 3738 transitions. [2022-07-19 21:25:55,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 351 transitions, 904 flow [2022-07-19 21:25:55,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 351 transitions, 885 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-07-19 21:25:55,926 INFO L242 Difference]: Finished difference. Result has 343 places, 325 transitions, 729 flow [2022-07-19 21:25:55,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=729, PETRI_PLACES=343, PETRI_TRANSITIONS=325} [2022-07-19 21:25:55,929 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 24 predicate places. [2022-07-19 21:25:55,929 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 325 transitions, 729 flow [2022-07-19 21:25:55,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 309.75) internal successors, (2478), 8 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,930 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:55,930 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:55,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:25:55,931 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:55,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:55,932 INFO L85 PathProgramCache]: Analyzing trace with hash -232079166, now seen corresponding path program 1 times [2022-07-19 21:25:55,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:55,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039853195] [2022-07-19 21:25:55,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:55,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:56,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:56,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039853195] [2022-07-19 21:25:56,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039853195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:56,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:56,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:25:56,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685934032] [2022-07-19 21:25:56,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:56,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:25:56,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:56,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:25:56,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:25:56,092 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 349 [2022-07-19 21:25:56,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 325 transitions, 729 flow. Second operand has 9 states, 9 states have (on average 306.6666666666667) internal successors, (2760), 9 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:56,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 349 [2022-07-19 21:25:56,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:56,455 INFO L129 PetriNetUnfolder]: 88/957 cut-off events. [2022-07-19 21:25:56,456 INFO L130 PetriNetUnfolder]: For 96/130 co-relation queries the response was YES. [2022-07-19 21:25:56,468 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 957 events. 88/957 cut-off events. For 96/130 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4808 event pairs, 36 based on Foata normal form. 1/868 useless extension candidates. Maximal degree in co-relation 1301. Up to 109 conditions per place. [2022-07-19 21:25:56,472 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 48 selfloop transitions, 10 changer transitions 10/359 dead transitions. [2022-07-19 21:25:56,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 359 transitions, 984 flow [2022-07-19 21:25:56,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:25:56,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:25:56,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4319 transitions. [2022-07-19 21:25:56,481 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8839541547277937 [2022-07-19 21:25:56,481 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4319 transitions. [2022-07-19 21:25:56,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4319 transitions. [2022-07-19 21:25:56,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:56,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4319 transitions. [2022-07-19 21:25:56,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 308.5) internal successors, (4319), 14 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 349.0) internal successors, (5235), 15 states have internal predecessors, (5235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,500 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 349.0) internal successors, (5235), 15 states have internal predecessors, (5235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,500 INFO L186 Difference]: Start difference. First operand has 343 places, 325 transitions, 729 flow. Second operand 14 states and 4319 transitions. [2022-07-19 21:25:56,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 359 transitions, 984 flow [2022-07-19 21:25:56,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 359 transitions, 950 flow, removed 16 selfloop flow, removed 7 redundant places. [2022-07-19 21:25:56,508 INFO L242 Difference]: Finished difference. Result has 354 places, 327 transitions, 760 flow [2022-07-19 21:25:56,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=760, PETRI_PLACES=354, PETRI_TRANSITIONS=327} [2022-07-19 21:25:56,510 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 35 predicate places. [2022-07-19 21:25:56,510 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 327 transitions, 760 flow [2022-07-19 21:25:56,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 306.6666666666667) internal successors, (2760), 9 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,511 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:56,511 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:56,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:25:56,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:56,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:56,512 INFO L85 PathProgramCache]: Analyzing trace with hash 807536200, now seen corresponding path program 1 times [2022-07-19 21:25:56,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:56,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083034586] [2022-07-19 21:25:56,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:56,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:56,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:56,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:56,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083034586] [2022-07-19 21:25:56,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083034586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:56,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:56,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:25:56,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761785467] [2022-07-19 21:25:56,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:56,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:25:56,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:56,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:25:56,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:25:56,656 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 349 [2022-07-19 21:25:56,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 327 transitions, 760 flow. Second operand has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:56,659 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 349 [2022-07-19 21:25:56,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:56,985 INFO L129 PetriNetUnfolder]: 179/969 cut-off events. [2022-07-19 21:25:56,986 INFO L130 PetriNetUnfolder]: For 127/143 co-relation queries the response was YES. [2022-07-19 21:25:56,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 969 events. 179/969 cut-off events. For 127/143 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5714 event pairs, 66 based on Foata normal form. 5/899 useless extension candidates. Maximal degree in co-relation 1328. Up to 154 conditions per place. [2022-07-19 21:25:56,998 INFO L132 encePairwiseOnDemand]: 340/349 looper letters, 49 selfloop transitions, 3 changer transitions 26/381 dead transitions. [2022-07-19 21:25:56,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 381 transitions, 1058 flow [2022-07-19 21:25:56,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:25:56,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:25:57,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4083 transitions. [2022-07-19 21:25:57,006 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.899933877011241 [2022-07-19 21:25:57,006 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4083 transitions. [2022-07-19 21:25:57,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4083 transitions. [2022-07-19 21:25:57,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:57,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4083 transitions. [2022-07-19 21:25:57,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 314.0769230769231) internal successors, (4083), 13 states have internal predecessors, (4083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 349.0) internal successors, (4886), 14 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,024 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 349.0) internal successors, (4886), 14 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,025 INFO L186 Difference]: Start difference. First operand has 354 places, 327 transitions, 760 flow. Second operand 13 states and 4083 transitions. [2022-07-19 21:25:57,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 381 transitions, 1058 flow [2022-07-19 21:25:57,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 381 transitions, 1012 flow, removed 22 selfloop flow, removed 9 redundant places. [2022-07-19 21:25:57,032 INFO L242 Difference]: Finished difference. Result has 360 places, 329 transitions, 769 flow [2022-07-19 21:25:57,032 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=769, PETRI_PLACES=360, PETRI_TRANSITIONS=329} [2022-07-19 21:25:57,033 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 41 predicate places. [2022-07-19 21:25:57,033 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 329 transitions, 769 flow [2022-07-19 21:25:57,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,034 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:57,034 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:57,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:25:57,035 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:57,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:57,036 INFO L85 PathProgramCache]: Analyzing trace with hash -27308194, now seen corresponding path program 2 times [2022-07-19 21:25:57,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:57,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119624503] [2022-07-19 21:25:57,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:57,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:57,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:57,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119624503] [2022-07-19 21:25:57,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119624503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:57,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:57,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:25:57,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723203778] [2022-07-19 21:25:57,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:57,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:25:57,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:57,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:25:57,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:25:57,157 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 349 [2022-07-19 21:25:57,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 329 transitions, 769 flow. Second operand has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:57,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 349 [2022-07-19 21:25:57,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:57,549 INFO L129 PetriNetUnfolder]: 255/1369 cut-off events. [2022-07-19 21:25:57,550 INFO L130 PetriNetUnfolder]: For 726/752 co-relation queries the response was YES. [2022-07-19 21:25:57,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 1369 events. 255/1369 cut-off events. For 726/752 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9940 event pairs, 126 based on Foata normal form. 1/1257 useless extension candidates. Maximal degree in co-relation 2409. Up to 257 conditions per place. [2022-07-19 21:25:57,572 INFO L132 encePairwiseOnDemand]: 340/349 looper letters, 56 selfloop transitions, 3 changer transitions 25/387 dead transitions. [2022-07-19 21:25:57,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 387 transitions, 1182 flow [2022-07-19 21:25:57,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:25:57,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:25:57,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4081 transitions. [2022-07-19 21:25:57,610 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8994930570861803 [2022-07-19 21:25:57,610 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4081 transitions. [2022-07-19 21:25:57,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4081 transitions. [2022-07-19 21:25:57,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:57,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4081 transitions. [2022-07-19 21:25:57,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 313.9230769230769) internal successors, (4081), 13 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 349.0) internal successors, (4886), 14 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,637 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 349.0) internal successors, (4886), 14 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,637 INFO L186 Difference]: Start difference. First operand has 360 places, 329 transitions, 769 flow. Second operand 13 states and 4081 transitions. [2022-07-19 21:25:57,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 387 transitions, 1182 flow [2022-07-19 21:25:57,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 387 transitions, 1140 flow, removed 19 selfloop flow, removed 7 redundant places. [2022-07-19 21:25:57,648 INFO L242 Difference]: Finished difference. Result has 368 places, 331 transitions, 803 flow [2022-07-19 21:25:57,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=803, PETRI_PLACES=368, PETRI_TRANSITIONS=331} [2022-07-19 21:25:57,650 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 49 predicate places. [2022-07-19 21:25:57,651 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 331 transitions, 803 flow [2022-07-19 21:25:57,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,652 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:57,652 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:57,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:25:57,652 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:57,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:57,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1846983216, now seen corresponding path program 3 times [2022-07-19 21:25:57,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:57,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836742622] [2022-07-19 21:25:57,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:57,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:57,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:57,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:57,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836742622] [2022-07-19 21:25:57,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836742622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:57,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:57,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:25:57,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112660134] [2022-07-19 21:25:57,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:57,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:25:57,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:57,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:25:57,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:25:57,786 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 349 [2022-07-19 21:25:57,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 331 transitions, 803 flow. Second operand has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:57,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 349 [2022-07-19 21:25:57,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:58,240 INFO L129 PetriNetUnfolder]: 270/1491 cut-off events. [2022-07-19 21:25:58,240 INFO L130 PetriNetUnfolder]: For 1639/1658 co-relation queries the response was YES. [2022-07-19 21:25:58,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2963 conditions, 1491 events. 270/1491 cut-off events. For 1639/1658 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11248 event pairs, 171 based on Foata normal form. 1/1371 useless extension candidates. Maximal degree in co-relation 2912. Up to 350 conditions per place. [2022-07-19 21:25:58,261 INFO L132 encePairwiseOnDemand]: 340/349 looper letters, 38 selfloop transitions, 8 changer transitions 20/369 dead transitions. [2022-07-19 21:25:58,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 369 transitions, 1143 flow [2022-07-19 21:25:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:25:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-19 21:25:58,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3759 transitions. [2022-07-19 21:25:58,269 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8975644699140402 [2022-07-19 21:25:58,269 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3759 transitions. [2022-07-19 21:25:58,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3759 transitions. [2022-07-19 21:25:58,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:58,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3759 transitions. [2022-07-19 21:25:58,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 313.25) internal successors, (3759), 12 states have internal predecessors, (3759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,285 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,285 INFO L186 Difference]: Start difference. First operand has 368 places, 331 transitions, 803 flow. Second operand 12 states and 3759 transitions. [2022-07-19 21:25:58,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 369 transitions, 1143 flow [2022-07-19 21:25:58,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 369 transitions, 1115 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-07-19 21:25:58,297 INFO L242 Difference]: Finished difference. Result has 371 places, 338 transitions, 893 flow [2022-07-19 21:25:58,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=893, PETRI_PLACES=371, PETRI_TRANSITIONS=338} [2022-07-19 21:25:58,298 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 52 predicate places. [2022-07-19 21:25:58,299 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 338 transitions, 893 flow [2022-07-19 21:25:58,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,300 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:58,300 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:58,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:25:58,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:58,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:58,301 INFO L85 PathProgramCache]: Analyzing trace with hash 603484824, now seen corresponding path program 4 times [2022-07-19 21:25:58,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:58,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135403682] [2022-07-19 21:25:58,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:58,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:58,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:58,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135403682] [2022-07-19 21:25:58,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135403682] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:58,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:58,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:25:58,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042614884] [2022-07-19 21:25:58,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:58,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:25:58,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:58,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:25:58,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:25:58,454 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 349 [2022-07-19 21:25:58,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 338 transitions, 893 flow. Second operand has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:58,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 349 [2022-07-19 21:25:58,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:58,838 INFO L129 PetriNetUnfolder]: 262/1393 cut-off events. [2022-07-19 21:25:58,839 INFO L130 PetriNetUnfolder]: For 1786/1820 co-relation queries the response was YES. [2022-07-19 21:25:58,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2996 conditions, 1393 events. 262/1393 cut-off events. For 1786/1820 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10343 event pairs, 151 based on Foata normal form. 2/1278 useless extension candidates. Maximal degree in co-relation 2944. Up to 346 conditions per place. [2022-07-19 21:25:58,865 INFO L132 encePairwiseOnDemand]: 340/349 looper letters, 38 selfloop transitions, 12 changer transitions 19/372 dead transitions. [2022-07-19 21:25:58,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 372 transitions, 1231 flow [2022-07-19 21:25:58,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:25:58,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:25:58,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3450 transitions. [2022-07-19 21:25:58,875 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8986715290440219 [2022-07-19 21:25:58,875 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3450 transitions. [2022-07-19 21:25:58,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3450 transitions. [2022-07-19 21:25:58,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:58,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3450 transitions. [2022-07-19 21:25:58,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 313.6363636363636) internal successors, (3450), 11 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 349.0) internal successors, (4188), 12 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,889 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 349.0) internal successors, (4188), 12 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,889 INFO L186 Difference]: Start difference. First operand has 371 places, 338 transitions, 893 flow. Second operand 11 states and 3450 transitions. [2022-07-19 21:25:58,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 372 transitions, 1231 flow [2022-07-19 21:25:58,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 372 transitions, 1209 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-07-19 21:25:58,902 INFO L242 Difference]: Finished difference. Result has 380 places, 343 transitions, 984 flow [2022-07-19 21:25:58,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=984, PETRI_PLACES=380, PETRI_TRANSITIONS=343} [2022-07-19 21:25:58,905 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 61 predicate places. [2022-07-19 21:25:58,905 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 343 transitions, 984 flow [2022-07-19 21:25:58,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,906 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:58,907 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:58,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:25:58,907 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:58,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:58,908 INFO L85 PathProgramCache]: Analyzing trace with hash -87715862, now seen corresponding path program 5 times [2022-07-19 21:25:58,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:58,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597500161] [2022-07-19 21:25:58,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:58,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:59,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:59,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597500161] [2022-07-19 21:25:59,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597500161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:59,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:59,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:25:59,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294856872] [2022-07-19 21:25:59,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:59,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:25:59,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:59,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:25:59,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:25:59,079 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 349 [2022-07-19 21:25:59,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 343 transitions, 984 flow. Second operand has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:59,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 349 [2022-07-19 21:25:59,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:59,484 INFO L129 PetriNetUnfolder]: 247/1383 cut-off events. [2022-07-19 21:25:59,484 INFO L130 PetriNetUnfolder]: For 2342/2361 co-relation queries the response was YES. [2022-07-19 21:25:59,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3100 conditions, 1383 events. 247/1383 cut-off events. For 2342/2361 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10227 event pairs, 155 based on Foata normal form. 1/1268 useless extension candidates. Maximal degree in co-relation 3042. Up to 347 conditions per place. [2022-07-19 21:25:59,505 INFO L132 encePairwiseOnDemand]: 340/349 looper letters, 36 selfloop transitions, 4 changer transitions 26/369 dead transitions. [2022-07-19 21:25:59,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 369 transitions, 1263 flow [2022-07-19 21:25:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:25:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:25:59,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3446 transitions. [2022-07-19 21:25:59,513 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8976295910393332 [2022-07-19 21:25:59,513 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3446 transitions. [2022-07-19 21:25:59,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3446 transitions. [2022-07-19 21:25:59,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:59,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3446 transitions. [2022-07-19 21:25:59,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 313.27272727272725) internal successors, (3446), 11 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 349.0) internal successors, (4188), 12 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,528 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 349.0) internal successors, (4188), 12 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,529 INFO L186 Difference]: Start difference. First operand has 380 places, 343 transitions, 984 flow. Second operand 11 states and 3446 transitions. [2022-07-19 21:25:59,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 369 transitions, 1263 flow [2022-07-19 21:25:59,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 369 transitions, 1220 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-07-19 21:25:59,543 INFO L242 Difference]: Finished difference. Result has 385 places, 337 transitions, 898 flow [2022-07-19 21:25:59,544 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=898, PETRI_PLACES=385, PETRI_TRANSITIONS=337} [2022-07-19 21:25:59,545 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 66 predicate places. [2022-07-19 21:25:59,545 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 337 transitions, 898 flow [2022-07-19 21:25:59,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,546 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:59,546 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:59,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:25:59,547 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:59,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:59,547 INFO L85 PathProgramCache]: Analyzing trace with hash -224770128, now seen corresponding path program 6 times [2022-07-19 21:25:59,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:59,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640160700] [2022-07-19 21:25:59,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:59,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:59,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:59,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640160700] [2022-07-19 21:25:59,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640160700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:59,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:59,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:25:59,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435987922] [2022-07-19 21:25:59,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:59,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:25:59,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:59,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:25:59,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:25:59,706 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 349 [2022-07-19 21:25:59,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 337 transitions, 898 flow. Second operand has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:59,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 349 [2022-07-19 21:25:59,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:00,109 INFO L129 PetriNetUnfolder]: 221/1241 cut-off events. [2022-07-19 21:26:00,109 INFO L130 PetriNetUnfolder]: For 2140/2167 co-relation queries the response was YES. [2022-07-19 21:26:00,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2687 conditions, 1241 events. 221/1241 cut-off events. For 2140/2167 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8763 event pairs, 145 based on Foata normal form. 2/1136 useless extension candidates. Maximal degree in co-relation 2633. Up to 300 conditions per place. [2022-07-19 21:26:00,133 INFO L132 encePairwiseOnDemand]: 340/349 looper letters, 31 selfloop transitions, 2 changer transitions 28/364 dead transitions. [2022-07-19 21:26:00,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 364 transitions, 1162 flow [2022-07-19 21:26:00,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:26:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-19 21:26:00,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3756 transitions. [2022-07-19 21:26:00,140 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8968481375358166 [2022-07-19 21:26:00,140 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3756 transitions. [2022-07-19 21:26:00,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3756 transitions. [2022-07-19 21:26:00,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:00,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3756 transitions. [2022-07-19 21:26:00,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,153 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,153 INFO L186 Difference]: Start difference. First operand has 385 places, 337 transitions, 898 flow. Second operand 12 states and 3756 transitions. [2022-07-19 21:26:00,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 364 transitions, 1162 flow [2022-07-19 21:26:00,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 364 transitions, 1112 flow, removed 16 selfloop flow, removed 11 redundant places. [2022-07-19 21:26:00,165 INFO L242 Difference]: Finished difference. Result has 380 places, 331 transitions, 826 flow [2022-07-19 21:26:00,166 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=826, PETRI_PLACES=380, PETRI_TRANSITIONS=331} [2022-07-19 21:26:00,167 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 61 predicate places. [2022-07-19 21:26:00,167 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 331 transitions, 826 flow [2022-07-19 21:26:00,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,168 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:00,168 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:00,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:26:00,168 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:00,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:00,169 INFO L85 PathProgramCache]: Analyzing trace with hash 400042452, now seen corresponding path program 1 times [2022-07-19 21:26:00,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:00,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512321924] [2022-07-19 21:26:00,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:00,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:00,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:00,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:00,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512321924] [2022-07-19 21:26:00,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512321924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:00,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:00,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:26:00,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916615098] [2022-07-19 21:26:00,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:00,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:26:00,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:00,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:26:00,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:26:00,238 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-19 21:26:00,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 331 transitions, 826 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:00,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-19 21:26:00,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:00,844 INFO L129 PetriNetUnfolder]: 560/3302 cut-off events. [2022-07-19 21:26:00,844 INFO L130 PetriNetUnfolder]: For 2822/2906 co-relation queries the response was YES. [2022-07-19 21:26:00,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5970 conditions, 3302 events. 560/3302 cut-off events. For 2822/2906 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 29503 event pairs, 318 based on Foata normal form. 7/2795 useless extension candidates. Maximal degree in co-relation 5917. Up to 427 conditions per place. [2022-07-19 21:26:00,890 INFO L132 encePairwiseOnDemand]: 345/349 looper letters, 37 selfloop transitions, 2 changer transitions 4/348 dead transitions. [2022-07-19 21:26:00,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 348 transitions, 949 flow [2022-07-19 21:26:00,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:26:00,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:26:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1283 transitions. [2022-07-19 21:26:00,892 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.919054441260745 [2022-07-19 21:26:00,892 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1283 transitions. [2022-07-19 21:26:00,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1283 transitions. [2022-07-19 21:26:00,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:00,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1283 transitions. [2022-07-19 21:26:00,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 320.75) internal successors, (1283), 4 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,897 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,897 INFO L186 Difference]: Start difference. First operand has 380 places, 331 transitions, 826 flow. Second operand 4 states and 1283 transitions. [2022-07-19 21:26:00,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 348 transitions, 949 flow [2022-07-19 21:26:00,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 348 transitions, 921 flow, removed 10 selfloop flow, removed 13 redundant places. [2022-07-19 21:26:00,917 INFO L242 Difference]: Finished difference. Result has 360 places, 330 transitions, 803 flow [2022-07-19 21:26:00,917 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=803, PETRI_PLACES=360, PETRI_TRANSITIONS=330} [2022-07-19 21:26:00,918 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 41 predicate places. [2022-07-19 21:26:00,918 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 330 transitions, 803 flow [2022-07-19 21:26:00,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,919 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:00,919 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:00,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:26:00,919 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:00,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:00,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1521460524, now seen corresponding path program 2 times [2022-07-19 21:26:00,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:00,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078923752] [2022-07-19 21:26:00,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:00,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:00,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:00,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:00,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078923752] [2022-07-19 21:26:00,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078923752] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:00,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:00,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:26:00,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402711770] [2022-07-19 21:26:00,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:00,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:26:00,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:00,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:26:00,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:26:00,994 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-19 21:26:00,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 330 transitions, 803 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:00,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-19 21:26:00,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:01,605 INFO L129 PetriNetUnfolder]: 477/3426 cut-off events. [2022-07-19 21:26:01,606 INFO L130 PetriNetUnfolder]: For 1652/1735 co-relation queries the response was YES. [2022-07-19 21:26:01,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6146 conditions, 3426 events. 477/3426 cut-off events. For 1652/1735 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 32885 event pairs, 140 based on Foata normal form. 16/3146 useless extension candidates. Maximal degree in co-relation 5362. Up to 314 conditions per place. [2022-07-19 21:26:01,639 INFO L132 encePairwiseOnDemand]: 341/349 looper letters, 47 selfloop transitions, 8 changer transitions 1/361 dead transitions. [2022-07-19 21:26:01,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 361 transitions, 1003 flow [2022-07-19 21:26:01,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:01,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:01,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1607 transitions. [2022-07-19 21:26:01,642 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9209169054441261 [2022-07-19 21:26:01,642 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1607 transitions. [2022-07-19 21:26:01,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1607 transitions. [2022-07-19 21:26:01,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:01,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1607 transitions. [2022-07-19 21:26:01,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.4) internal successors, (1607), 5 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,648 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,648 INFO L186 Difference]: Start difference. First operand has 360 places, 330 transitions, 803 flow. Second operand 5 states and 1607 transitions. [2022-07-19 21:26:01,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 361 transitions, 1003 flow [2022-07-19 21:26:01,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 361 transitions, 997 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-19 21:26:01,664 INFO L242 Difference]: Finished difference. Result has 360 places, 337 transitions, 864 flow [2022-07-19 21:26:01,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=864, PETRI_PLACES=360, PETRI_TRANSITIONS=337} [2022-07-19 21:26:01,665 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 41 predicate places. [2022-07-19 21:26:01,665 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 337 transitions, 864 flow [2022-07-19 21:26:01,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,665 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:01,666 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:01,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:26:01,666 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:01,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:01,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1411265022, now seen corresponding path program 1 times [2022-07-19 21:26:01,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:01,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141483108] [2022-07-19 21:26:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:01,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:01,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:01,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:01,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141483108] [2022-07-19 21:26:01,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141483108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:01,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:01,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:26:01,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527407717] [2022-07-19 21:26:01,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:01,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:26:01,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:01,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:26:01,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:26:01,727 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-19 21:26:01,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 337 transitions, 864 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:01,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-19 21:26:01,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:02,514 INFO L129 PetriNetUnfolder]: 607/4578 cut-off events. [2022-07-19 21:26:02,514 INFO L130 PetriNetUnfolder]: For 3547/3607 co-relation queries the response was YES. [2022-07-19 21:26:02,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8673 conditions, 4578 events. 607/4578 cut-off events. For 3547/3607 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 46219 event pairs, 313 based on Foata normal form. 27/4256 useless extension candidates. Maximal degree in co-relation 7277. Up to 391 conditions per place. [2022-07-19 21:26:02,557 INFO L132 encePairwiseOnDemand]: 339/349 looper letters, 55 selfloop transitions, 7 changer transitions 7/374 dead transitions. [2022-07-19 21:26:02,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 374 transitions, 1151 flow [2022-07-19 21:26:02,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:02,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:02,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1613 transitions. [2022-07-19 21:26:02,560 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9243553008595988 [2022-07-19 21:26:02,560 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1613 transitions. [2022-07-19 21:26:02,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1613 transitions. [2022-07-19 21:26:02,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:02,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1613 transitions. [2022-07-19 21:26:02,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 322.6) internal successors, (1613), 5 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,565 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,565 INFO L186 Difference]: Start difference. First operand has 360 places, 337 transitions, 864 flow. Second operand 5 states and 1613 transitions. [2022-07-19 21:26:02,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 374 transitions, 1151 flow [2022-07-19 21:26:02,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 374 transitions, 1135 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:02,588 INFO L242 Difference]: Finished difference. Result has 367 places, 341 transitions, 916 flow [2022-07-19 21:26:02,589 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=916, PETRI_PLACES=367, PETRI_TRANSITIONS=341} [2022-07-19 21:26:02,589 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 48 predicate places. [2022-07-19 21:26:02,590 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 341 transitions, 916 flow [2022-07-19 21:26:02,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,590 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:02,590 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:02,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:26:02,591 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:02,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:02,591 INFO L85 PathProgramCache]: Analyzing trace with hash 371624586, now seen corresponding path program 3 times [2022-07-19 21:26:02,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:02,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033692722] [2022-07-19 21:26:02,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:02,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:02,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:02,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033692722] [2022-07-19 21:26:02,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033692722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:02,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:02,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:26:02,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302909700] [2022-07-19 21:26:02,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:02,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:26:02,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:02,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:26:02,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:26:02,662 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-19 21:26:02,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 341 transitions, 916 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:02,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-19 21:26:02,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:03,667 INFO L129 PetriNetUnfolder]: 599/4987 cut-off events. [2022-07-19 21:26:03,668 INFO L130 PetriNetUnfolder]: For 3816/4138 co-relation queries the response was YES. [2022-07-19 21:26:03,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9182 conditions, 4987 events. 599/4987 cut-off events. For 3816/4138 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 51532 event pairs, 345 based on Foata normal form. 38/4582 useless extension candidates. Maximal degree in co-relation 7914. Up to 392 conditions per place. [2022-07-19 21:26:03,750 INFO L132 encePairwiseOnDemand]: 339/349 looper letters, 58 selfloop transitions, 15 changer transitions 1/379 dead transitions. [2022-07-19 21:26:03,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 379 transitions, 1252 flow [2022-07-19 21:26:03,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:03,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1613 transitions. [2022-07-19 21:26:03,754 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9243553008595988 [2022-07-19 21:26:03,755 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1613 transitions. [2022-07-19 21:26:03,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1613 transitions. [2022-07-19 21:26:03,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:03,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1613 transitions. [2022-07-19 21:26:03,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 322.6) internal successors, (1613), 5 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,762 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,762 INFO L186 Difference]: Start difference. First operand has 367 places, 341 transitions, 916 flow. Second operand 5 states and 1613 transitions. [2022-07-19 21:26:03,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 379 transitions, 1252 flow [2022-07-19 21:26:03,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 379 transitions, 1230 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-07-19 21:26:03,785 INFO L242 Difference]: Finished difference. Result has 371 places, 352 transitions, 1061 flow [2022-07-19 21:26:03,785 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1061, PETRI_PLACES=371, PETRI_TRANSITIONS=352} [2022-07-19 21:26:03,786 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 52 predicate places. [2022-07-19 21:26:03,786 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 352 transitions, 1061 flow [2022-07-19 21:26:03,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,787 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:03,787 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:03,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:26:03,788 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:03,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:03,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1006346540, now seen corresponding path program 4 times [2022-07-19 21:26:03,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:03,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940218737] [2022-07-19 21:26:03,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:03,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:03,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:03,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:03,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940218737] [2022-07-19 21:26:03,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940218737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:03,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:03,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:26:03,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783739077] [2022-07-19 21:26:03,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:03,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:26:03,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:03,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:26:03,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:26:03,864 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-19 21:26:03,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 352 transitions, 1061 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:03,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-19 21:26:03,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:04,478 INFO L129 PetriNetUnfolder]: 469/4274 cut-off events. [2022-07-19 21:26:04,479 INFO L130 PetriNetUnfolder]: For 3905/3956 co-relation queries the response was YES. [2022-07-19 21:26:04,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8613 conditions, 4274 events. 469/4274 cut-off events. For 3905/3956 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 44084 event pairs, 209 based on Foata normal form. 19/4056 useless extension candidates. Maximal degree in co-relation 8552. Up to 374 conditions per place. [2022-07-19 21:26:04,529 INFO L132 encePairwiseOnDemand]: 341/349 looper letters, 57 selfloop transitions, 14 changer transitions 2/378 dead transitions. [2022-07-19 21:26:04,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 378 transitions, 1355 flow [2022-07-19 21:26:04,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:04,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1603 transitions. [2022-07-19 21:26:04,532 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9186246418338109 [2022-07-19 21:26:04,532 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1603 transitions. [2022-07-19 21:26:04,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1603 transitions. [2022-07-19 21:26:04,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:04,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1603 transitions. [2022-07-19 21:26:04,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 320.6) internal successors, (1603), 5 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,538 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,538 INFO L186 Difference]: Start difference. First operand has 371 places, 352 transitions, 1061 flow. Second operand 5 states and 1603 transitions. [2022-07-19 21:26:04,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 378 transitions, 1355 flow [2022-07-19 21:26:04,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 378 transitions, 1345 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-07-19 21:26:04,565 INFO L242 Difference]: Finished difference. Result has 377 places, 358 transitions, 1160 flow [2022-07-19 21:26:04,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1160, PETRI_PLACES=377, PETRI_TRANSITIONS=358} [2022-07-19 21:26:04,566 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 58 predicate places. [2022-07-19 21:26:04,566 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 358 transitions, 1160 flow [2022-07-19 21:26:04,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,567 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:04,567 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:04,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:26:04,567 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:04,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:04,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2034932952, now seen corresponding path program 2 times [2022-07-19 21:26:04,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:04,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911651712] [2022-07-19 21:26:04,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:04,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:04,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:04,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911651712] [2022-07-19 21:26:04,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911651712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:04,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:04,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:26:04,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410436558] [2022-07-19 21:26:04,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:04,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:26:04,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:04,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:26:04,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:26:04,629 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-19 21:26:04,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 358 transitions, 1160 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:04,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-19 21:26:04,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:05,442 INFO L129 PetriNetUnfolder]: 461/4249 cut-off events. [2022-07-19 21:26:05,443 INFO L130 PetriNetUnfolder]: For 4915/5251 co-relation queries the response was YES. [2022-07-19 21:26:05,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8640 conditions, 4249 events. 461/4249 cut-off events. For 4915/5251 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 43569 event pairs, 206 based on Foata normal form. 13/3951 useless extension candidates. Maximal degree in co-relation 7496. Up to 281 conditions per place. [2022-07-19 21:26:05,497 INFO L132 encePairwiseOnDemand]: 340/349 looper letters, 68 selfloop transitions, 19 changer transitions 4/396 dead transitions. [2022-07-19 21:26:05,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 396 transitions, 1658 flow [2022-07-19 21:26:05,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:05,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:05,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1608 transitions. [2022-07-19 21:26:05,502 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9214899713467049 [2022-07-19 21:26:05,502 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1608 transitions. [2022-07-19 21:26:05,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1608 transitions. [2022-07-19 21:26:05,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:05,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1608 transitions. [2022-07-19 21:26:05,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.6) internal successors, (1608), 5 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,507 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,508 INFO L186 Difference]: Start difference. First operand has 377 places, 358 transitions, 1160 flow. Second operand 5 states and 1608 transitions. [2022-07-19 21:26:05,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 396 transitions, 1658 flow [2022-07-19 21:26:05,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 396 transitions, 1654 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:05,536 INFO L242 Difference]: Finished difference. Result has 385 places, 369 transitions, 1358 flow [2022-07-19 21:26:05,536 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1358, PETRI_PLACES=385, PETRI_TRANSITIONS=369} [2022-07-19 21:26:05,537 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 66 predicate places. [2022-07-19 21:26:05,539 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 369 transitions, 1358 flow [2022-07-19 21:26:05,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,539 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:05,540 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:05,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:26:05,540 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:05,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:05,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2016153488, now seen corresponding path program 3 times [2022-07-19 21:26:05,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:05,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000261874] [2022-07-19 21:26:05,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:05,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:05,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:05,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000261874] [2022-07-19 21:26:05,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000261874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:05,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:05,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:26:05,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9968358] [2022-07-19 21:26:05,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:05,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:26:05,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:05,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:26:05,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:26:05,607 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-19 21:26:05,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 369 transitions, 1358 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:05,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-19 21:26:05,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:06,328 INFO L129 PetriNetUnfolder]: 458/4128 cut-off events. [2022-07-19 21:26:06,328 INFO L130 PetriNetUnfolder]: For 6261/6588 co-relation queries the response was YES. [2022-07-19 21:26:06,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8974 conditions, 4128 events. 458/4128 cut-off events. For 6261/6588 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 41986 event pairs, 214 based on Foata normal form. 11/3848 useless extension candidates. Maximal degree in co-relation 7738. Up to 291 conditions per place. [2022-07-19 21:26:06,363 INFO L132 encePairwiseOnDemand]: 341/349 looper letters, 71 selfloop transitions, 23 changer transitions 1/400 dead transitions. [2022-07-19 21:26:06,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 400 transitions, 1805 flow [2022-07-19 21:26:06,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:06,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1604 transitions. [2022-07-19 21:26:06,366 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9191977077363896 [2022-07-19 21:26:06,366 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1604 transitions. [2022-07-19 21:26:06,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1604 transitions. [2022-07-19 21:26:06,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:06,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1604 transitions. [2022-07-19 21:26:06,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 320.8) internal successors, (1604), 5 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,371 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,371 INFO L186 Difference]: Start difference. First operand has 385 places, 369 transitions, 1358 flow. Second operand 5 states and 1604 transitions. [2022-07-19 21:26:06,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 400 transitions, 1805 flow [2022-07-19 21:26:06,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 400 transitions, 1789 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:06,401 INFO L242 Difference]: Finished difference. Result has 392 places, 380 transitions, 1564 flow [2022-07-19 21:26:06,402 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1564, PETRI_PLACES=392, PETRI_TRANSITIONS=380} [2022-07-19 21:26:06,402 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 73 predicate places. [2022-07-19 21:26:06,402 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 380 transitions, 1564 flow [2022-07-19 21:26:06,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,403 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:06,403 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:06,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:26:06,403 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:06,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:06,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1149123476, now seen corresponding path program 4 times [2022-07-19 21:26:06,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:06,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985926498] [2022-07-19 21:26:06,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:06,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:06,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:06,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985926498] [2022-07-19 21:26:06,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985926498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:06,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:06,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:26:06,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105135438] [2022-07-19 21:26:06,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:06,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:26:06,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:06,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:26:06,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:26:06,457 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-19 21:26:06,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 380 transitions, 1564 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:06,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-19 21:26:06,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:07,235 INFO L129 PetriNetUnfolder]: 527/4803 cut-off events. [2022-07-19 21:26:07,235 INFO L130 PetriNetUnfolder]: For 9000/9673 co-relation queries the response was YES. [2022-07-19 21:26:07,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10038 conditions, 4803 events. 527/4803 cut-off events. For 9000/9673 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 49429 event pairs, 342 based on Foata normal form. 8/4432 useless extension candidates. Maximal degree in co-relation 8654. Up to 547 conditions per place. [2022-07-19 21:26:07,285 INFO L132 encePairwiseOnDemand]: 346/349 looper letters, 71 selfloop transitions, 4 changer transitions 9/389 dead transitions. [2022-07-19 21:26:07,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 389 transitions, 1806 flow [2022-07-19 21:26:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:26:07,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:26:07,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1277 transitions. [2022-07-19 21:26:07,288 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.914756446991404 [2022-07-19 21:26:07,288 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1277 transitions. [2022-07-19 21:26:07,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1277 transitions. [2022-07-19 21:26:07,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:07,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1277 transitions. [2022-07-19 21:26:07,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 319.25) internal successors, (1277), 4 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,293 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,293 INFO L186 Difference]: Start difference. First operand has 392 places, 380 transitions, 1564 flow. Second operand 4 states and 1277 transitions. [2022-07-19 21:26:07,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 389 transitions, 1806 flow [2022-07-19 21:26:07,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 389 transitions, 1786 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:07,326 INFO L242 Difference]: Finished difference. Result has 397 places, 374 transitions, 1470 flow [2022-07-19 21:26:07,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1470, PETRI_PLACES=397, PETRI_TRANSITIONS=374} [2022-07-19 21:26:07,326 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 78 predicate places. [2022-07-19 21:26:07,327 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 374 transitions, 1470 flow [2022-07-19 21:26:07,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,327 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:07,328 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:07,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:26:07,328 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:07,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:07,329 INFO L85 PathProgramCache]: Analyzing trace with hash -263194964, now seen corresponding path program 5 times [2022-07-19 21:26:07,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:07,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890423687] [2022-07-19 21:26:07,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:07,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:07,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:07,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:07,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890423687] [2022-07-19 21:26:07,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890423687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:07,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:07,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:26:07,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072742749] [2022-07-19 21:26:07,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:07,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:26:07,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:07,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:26:07,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:26:07,395 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-19 21:26:07,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 374 transitions, 1470 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:07,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-19 21:26:07,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:08,101 INFO L129 PetriNetUnfolder]: 493/4368 cut-off events. [2022-07-19 21:26:08,102 INFO L130 PetriNetUnfolder]: For 9138/9904 co-relation queries the response was YES. [2022-07-19 21:26:08,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9056 conditions, 4368 events. 493/4368 cut-off events. For 9138/9904 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 43404 event pairs, 303 based on Foata normal form. 10/4017 useless extension candidates. Maximal degree in co-relation 9008. Up to 474 conditions per place. [2022-07-19 21:26:08,158 INFO L132 encePairwiseOnDemand]: 346/349 looper letters, 69 selfloop transitions, 6 changer transitions 4/384 dead transitions. [2022-07-19 21:26:08,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 384 transitions, 1697 flow [2022-07-19 21:26:08,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:26:08,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:26:08,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1279 transitions. [2022-07-19 21:26:08,160 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.916189111747851 [2022-07-19 21:26:08,160 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1279 transitions. [2022-07-19 21:26:08,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1279 transitions. [2022-07-19 21:26:08,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:08,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1279 transitions. [2022-07-19 21:26:08,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,164 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,164 INFO L186 Difference]: Start difference. First operand has 397 places, 374 transitions, 1470 flow. Second operand 4 states and 1279 transitions. [2022-07-19 21:26:08,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 384 transitions, 1697 flow [2022-07-19 21:26:08,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 384 transitions, 1690 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-19 21:26:08,196 INFO L242 Difference]: Finished difference. Result has 399 places, 371 transitions, 1438 flow [2022-07-19 21:26:08,197 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1438, PETRI_PLACES=399, PETRI_TRANSITIONS=371} [2022-07-19 21:26:08,197 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 80 predicate places. [2022-07-19 21:26:08,198 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 371 transitions, 1438 flow [2022-07-19 21:26:08,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,198 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:08,198 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:08,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 21:26:08,199 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:08,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:08,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1786200662, now seen corresponding path program 5 times [2022-07-19 21:26:08,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:08,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516369003] [2022-07-19 21:26:08,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:08,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:08,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:08,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516369003] [2022-07-19 21:26:08,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516369003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:08,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:08,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:26:08,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251978252] [2022-07-19 21:26:08,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:08,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:26:08,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:08,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:26:08,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:26:08,256 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-19 21:26:08,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 371 transitions, 1438 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:08,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-19 21:26:08,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:08,917 INFO L129 PetriNetUnfolder]: 482/4226 cut-off events. [2022-07-19 21:26:08,917 INFO L130 PetriNetUnfolder]: For 9003/9739 co-relation queries the response was YES. [2022-07-19 21:26:08,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8795 conditions, 4226 events. 482/4226 cut-off events. For 9003/9739 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 41360 event pairs, 302 based on Foata normal form. 7/3882 useless extension candidates. Maximal degree in co-relation 8746. Up to 476 conditions per place. [2022-07-19 21:26:08,959 INFO L132 encePairwiseOnDemand]: 346/349 looper letters, 63 selfloop transitions, 6 changer transitions 2/376 dead transitions. [2022-07-19 21:26:08,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 376 transitions, 1600 flow [2022-07-19 21:26:08,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:26:08,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:26:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1277 transitions. [2022-07-19 21:26:08,962 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.914756446991404 [2022-07-19 21:26:08,962 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1277 transitions. [2022-07-19 21:26:08,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1277 transitions. [2022-07-19 21:26:08,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:08,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1277 transitions. [2022-07-19 21:26:08,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 319.25) internal successors, (1277), 4 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,966 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,966 INFO L186 Difference]: Start difference. First operand has 399 places, 371 transitions, 1438 flow. Second operand 4 states and 1277 transitions. [2022-07-19 21:26:08,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 376 transitions, 1600 flow [2022-07-19 21:26:08,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 376 transitions, 1584 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-07-19 21:26:08,997 INFO L242 Difference]: Finished difference. Result has 400 places, 367 transitions, 1381 flow [2022-07-19 21:26:08,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1397, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1381, PETRI_PLACES=400, PETRI_TRANSITIONS=367} [2022-07-19 21:26:08,998 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 81 predicate places. [2022-07-19 21:26:08,998 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 367 transitions, 1381 flow [2022-07-19 21:26:08,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,999 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:08,999 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:08,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 21:26:08,999 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:09,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:09,000 INFO L85 PathProgramCache]: Analyzing trace with hash 814738280, now seen corresponding path program 1 times [2022-07-19 21:26:09,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:09,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990190130] [2022-07-19 21:26:09,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:09,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:09,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:09,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990190130] [2022-07-19 21:26:09,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990190130] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:09,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:09,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:26:09,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888462155] [2022-07-19 21:26:09,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:09,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:26:09,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:09,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:26:09,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:26:09,067 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-19 21:26:09,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 367 transitions, 1381 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:09,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-19 21:26:09,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:09,698 INFO L129 PetriNetUnfolder]: 510/4185 cut-off events. [2022-07-19 21:26:09,698 INFO L130 PetriNetUnfolder]: For 8890/9034 co-relation queries the response was YES. [2022-07-19 21:26:09,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9060 conditions, 4185 events. 510/4185 cut-off events. For 8890/9034 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 41160 event pairs, 153 based on Foata normal form. 20/3909 useless extension candidates. Maximal degree in co-relation 9011. Up to 408 conditions per place. [2022-07-19 21:26:09,751 INFO L132 encePairwiseOnDemand]: 341/349 looper letters, 87 selfloop transitions, 16 changer transitions 14/422 dead transitions. [2022-07-19 21:26:09,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 422 transitions, 2240 flow [2022-07-19 21:26:09,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:09,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:09,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1608 transitions. [2022-07-19 21:26:09,756 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9214899713467049 [2022-07-19 21:26:09,756 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1608 transitions. [2022-07-19 21:26:09,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1608 transitions. [2022-07-19 21:26:09,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:09,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1608 transitions. [2022-07-19 21:26:09,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.6) internal successors, (1608), 5 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,760 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,761 INFO L186 Difference]: Start difference. First operand has 400 places, 367 transitions, 1381 flow. Second operand 5 states and 1608 transitions. [2022-07-19 21:26:09,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 422 transitions, 2240 flow [2022-07-19 21:26:09,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 422 transitions, 2219 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-07-19 21:26:09,799 INFO L242 Difference]: Finished difference. Result has 405 places, 377 transitions, 1564 flow [2022-07-19 21:26:09,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1564, PETRI_PLACES=405, PETRI_TRANSITIONS=377} [2022-07-19 21:26:09,800 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 86 predicate places. [2022-07-19 21:26:09,801 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 377 transitions, 1564 flow [2022-07-19 21:26:09,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,801 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:09,801 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:09,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 21:26:09,802 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:09,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:09,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1858173424, now seen corresponding path program 2 times [2022-07-19 21:26:09,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:09,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383661941] [2022-07-19 21:26:09,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:09,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:09,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:09,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383661941] [2022-07-19 21:26:09,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383661941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:09,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:09,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:26:09,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122318235] [2022-07-19 21:26:09,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:09,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:26:09,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:09,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:26:09,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:26:09,866 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-19 21:26:09,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 377 transitions, 1564 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:09,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-19 21:26:09,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:10,452 INFO L129 PetriNetUnfolder]: 507/4108 cut-off events. [2022-07-19 21:26:10,452 INFO L130 PetriNetUnfolder]: For 10654/11305 co-relation queries the response was YES. [2022-07-19 21:26:10,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9086 conditions, 4108 events. 507/4108 cut-off events. For 10654/11305 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 39872 event pairs, 171 based on Foata normal form. 30/3817 useless extension candidates. Maximal degree in co-relation 9034. Up to 361 conditions per place. [2022-07-19 21:26:10,497 INFO L132 encePairwiseOnDemand]: 340/349 looper letters, 81 selfloop transitions, 25 changer transitions 6/417 dead transitions. [2022-07-19 21:26:10,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 417 transitions, 2265 flow [2022-07-19 21:26:10,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:10,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:10,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1606 transitions. [2022-07-19 21:26:10,499 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9203438395415473 [2022-07-19 21:26:10,499 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1606 transitions. [2022-07-19 21:26:10,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1606 transitions. [2022-07-19 21:26:10,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:10,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1606 transitions. [2022-07-19 21:26:10,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.2) internal successors, (1606), 5 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,502 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,502 INFO L186 Difference]: Start difference. First operand has 405 places, 377 transitions, 1564 flow. Second operand 5 states and 1606 transitions. [2022-07-19 21:26:10,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 417 transitions, 2265 flow [2022-07-19 21:26:10,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 417 transitions, 2239 flow, removed 13 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:10,534 INFO L242 Difference]: Finished difference. Result has 413 places, 387 transitions, 1796 flow [2022-07-19 21:26:10,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1796, PETRI_PLACES=413, PETRI_TRANSITIONS=387} [2022-07-19 21:26:10,535 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 94 predicate places. [2022-07-19 21:26:10,535 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 387 transitions, 1796 flow [2022-07-19 21:26:10,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,536 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:10,536 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:10,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 21:26:10,536 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:10,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:10,537 INFO L85 PathProgramCache]: Analyzing trace with hash 757831568, now seen corresponding path program 1 times [2022-07-19 21:26:10,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:10,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749643594] [2022-07-19 21:26:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:10,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:10,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:10,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749643594] [2022-07-19 21:26:10,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749643594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:10,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:10,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:10,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228586123] [2022-07-19 21:26:10,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:10,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:10,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:10,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:10,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:10,662 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-19 21:26:10,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 387 transitions, 1796 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:10,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-19 21:26:10,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:12,132 INFO L129 PetriNetUnfolder]: 2284/7848 cut-off events. [2022-07-19 21:26:12,133 INFO L130 PetriNetUnfolder]: For 9982/10185 co-relation queries the response was YES. [2022-07-19 21:26:12,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17939 conditions, 7848 events. 2284/7848 cut-off events. For 9982/10185 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 82892 event pairs, 1434 based on Foata normal form. 6/7018 useless extension candidates. Maximal degree in co-relation 17883. Up to 2945 conditions per place. [2022-07-19 21:26:12,232 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 80 selfloop transitions, 30 changer transitions 28/491 dead transitions. [2022-07-19 21:26:12,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 491 transitions, 2451 flow [2022-07-19 21:26:12,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:26:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:26:12,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7383 transitions. [2022-07-19 21:26:12,237 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8814469914040115 [2022-07-19 21:26:12,237 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7383 transitions. [2022-07-19 21:26:12,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7383 transitions. [2022-07-19 21:26:12,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:12,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7383 transitions. [2022-07-19 21:26:12,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 307.625) internal successors, (7383), 24 states have internal predecessors, (7383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 349.0) internal successors, (8725), 25 states have internal predecessors, (8725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,253 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 349.0) internal successors, (8725), 25 states have internal predecessors, (8725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,253 INFO L186 Difference]: Start difference. First operand has 413 places, 387 transitions, 1796 flow. Second operand 24 states and 7383 transitions. [2022-07-19 21:26:12,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 491 transitions, 2451 flow [2022-07-19 21:26:12,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 491 transitions, 2429 flow, removed 11 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:12,297 INFO L242 Difference]: Finished difference. Result has 456 places, 416 transitions, 2064 flow [2022-07-19 21:26:12,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2064, PETRI_PLACES=456, PETRI_TRANSITIONS=416} [2022-07-19 21:26:12,298 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 137 predicate places. [2022-07-19 21:26:12,298 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 416 transitions, 2064 flow [2022-07-19 21:26:12,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,299 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:12,299 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:12,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 21:26:12,299 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:12,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:12,300 INFO L85 PathProgramCache]: Analyzing trace with hash 683846268, now seen corresponding path program 1 times [2022-07-19 21:26:12,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:12,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78710519] [2022-07-19 21:26:12,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:12,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:12,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:12,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78710519] [2022-07-19 21:26:12,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78710519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:12,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:12,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:26:12,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585250760] [2022-07-19 21:26:12,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:12,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:26:12,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:12,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:26:12,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:26:12,367 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-19 21:26:12,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 416 transitions, 2064 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:12,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-19 21:26:12,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:13,157 INFO L129 PetriNetUnfolder]: 540/3950 cut-off events. [2022-07-19 21:26:13,157 INFO L130 PetriNetUnfolder]: For 13363/13419 co-relation queries the response was YES. [2022-07-19 21:26:13,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11058 conditions, 3950 events. 540/3950 cut-off events. For 13363/13419 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 38341 event pairs, 147 based on Foata normal form. 39/3743 useless extension candidates. Maximal degree in co-relation 10981. Up to 420 conditions per place. [2022-07-19 21:26:13,212 INFO L132 encePairwiseOnDemand]: 341/349 looper letters, 90 selfloop transitions, 22 changer transitions 3/449 dead transitions. [2022-07-19 21:26:13,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 449 transitions, 2629 flow [2022-07-19 21:26:13,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:13,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:13,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1605 transitions. [2022-07-19 21:26:13,215 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9197707736389685 [2022-07-19 21:26:13,215 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1605 transitions. [2022-07-19 21:26:13,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1605 transitions. [2022-07-19 21:26:13,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:13,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1605 transitions. [2022-07-19 21:26:13,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,219 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,220 INFO L186 Difference]: Start difference. First operand has 456 places, 416 transitions, 2064 flow. Second operand 5 states and 1605 transitions. [2022-07-19 21:26:13,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 449 transitions, 2629 flow [2022-07-19 21:26:13,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 449 transitions, 2543 flow, removed 43 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:13,296 INFO L242 Difference]: Finished difference. Result has 460 places, 425 transitions, 2172 flow [2022-07-19 21:26:13,296 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2172, PETRI_PLACES=460, PETRI_TRANSITIONS=425} [2022-07-19 21:26:13,299 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 141 predicate places. [2022-07-19 21:26:13,299 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 425 transitions, 2172 flow [2022-07-19 21:26:13,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,300 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:13,300 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:13,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 21:26:13,300 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:13,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:13,300 INFO L85 PathProgramCache]: Analyzing trace with hash -866903354, now seen corresponding path program 2 times [2022-07-19 21:26:13,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:13,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940904693] [2022-07-19 21:26:13,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:13,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:13,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:13,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940904693] [2022-07-19 21:26:13,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940904693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:13,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:13,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:13,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101394020] [2022-07-19 21:26:13,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:13,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:13,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:13,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:13,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:13,435 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-19 21:26:13,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 425 transitions, 2172 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:13,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-19 21:26:13,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:15,378 INFO L129 PetriNetUnfolder]: 2466/8693 cut-off events. [2022-07-19 21:26:15,378 INFO L130 PetriNetUnfolder]: For 25215/25728 co-relation queries the response was YES. [2022-07-19 21:26:15,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26026 conditions, 8693 events. 2466/8693 cut-off events. For 25215/25728 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 91726 event pairs, 1481 based on Foata normal form. 8/7802 useless extension candidates. Maximal degree in co-relation 25947. Up to 2990 conditions per place. [2022-07-19 21:26:15,728 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 90 selfloop transitions, 36 changer transitions 22/510 dead transitions. [2022-07-19 21:26:15,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 510 transitions, 3078 flow [2022-07-19 21:26:15,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:15,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 6152 transitions. [2022-07-19 21:26:15,741 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8813753581661891 [2022-07-19 21:26:15,741 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 6152 transitions. [2022-07-19 21:26:15,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 6152 transitions. [2022-07-19 21:26:15,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:15,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 6152 transitions. [2022-07-19 21:26:15,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 307.6) internal successors, (6152), 20 states have internal predecessors, (6152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 349.0) internal successors, (7329), 21 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,753 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 349.0) internal successors, (7329), 21 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,753 INFO L186 Difference]: Start difference. First operand has 460 places, 425 transitions, 2172 flow. Second operand 20 states and 6152 transitions. [2022-07-19 21:26:15,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 510 transitions, 3078 flow [2022-07-19 21:26:15,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 510 transitions, 3028 flow, removed 17 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:15,893 INFO L242 Difference]: Finished difference. Result has 492 places, 458 transitions, 2580 flow [2022-07-19 21:26:15,894 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=2122, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2580, PETRI_PLACES=492, PETRI_TRANSITIONS=458} [2022-07-19 21:26:15,894 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 173 predicate places. [2022-07-19 21:26:15,894 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 458 transitions, 2580 flow [2022-07-19 21:26:15,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,895 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:15,895 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:15,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 21:26:15,896 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:15,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:15,897 INFO L85 PathProgramCache]: Analyzing trace with hash -151826670, now seen corresponding path program 3 times [2022-07-19 21:26:15,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:15,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259139512] [2022-07-19 21:26:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:15,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:16,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:16,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259139512] [2022-07-19 21:26:16,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259139512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:16,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:16,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:16,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846988828] [2022-07-19 21:26:16,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:16,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:16,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:16,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:16,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:16,162 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-19 21:26:16,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 458 transitions, 2580 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:16,164 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-19 21:26:16,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:18,284 INFO L129 PetriNetUnfolder]: 2524/8747 cut-off events. [2022-07-19 21:26:18,284 INFO L130 PetriNetUnfolder]: For 48143/48364 co-relation queries the response was YES. [2022-07-19 21:26:18,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31487 conditions, 8747 events. 2524/8747 cut-off events. For 48143/48364 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 93601 event pairs, 1506 based on Foata normal form. 10/7851 useless extension candidates. Maximal degree in co-relation 31394. Up to 3344 conditions per place. [2022-07-19 21:26:18,417 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 97 selfloop transitions, 51 changer transitions 19/529 dead transitions. [2022-07-19 21:26:18,417 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 529 transitions, 3511 flow [2022-07-19 21:26:18,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:18,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:18,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 6148 transitions. [2022-07-19 21:26:18,422 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8808022922636103 [2022-07-19 21:26:18,422 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 6148 transitions. [2022-07-19 21:26:18,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 6148 transitions. [2022-07-19 21:26:18,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:18,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 6148 transitions. [2022-07-19 21:26:18,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 307.4) internal successors, (6148), 20 states have internal predecessors, (6148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:18,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 349.0) internal successors, (7329), 21 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:18,433 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 349.0) internal successors, (7329), 21 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:18,433 INFO L186 Difference]: Start difference. First operand has 492 places, 458 transitions, 2580 flow. Second operand 20 states and 6148 transitions. [2022-07-19 21:26:18,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 529 transitions, 3511 flow [2022-07-19 21:26:18,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 529 transitions, 3339 flow, removed 86 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:18,804 INFO L242 Difference]: Finished difference. Result has 522 places, 488 transitions, 3002 flow [2022-07-19 21:26:18,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3002, PETRI_PLACES=522, PETRI_TRANSITIONS=488} [2022-07-19 21:26:18,805 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 203 predicate places. [2022-07-19 21:26:18,805 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 488 transitions, 3002 flow [2022-07-19 21:26:18,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:18,806 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:18,806 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:18,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 21:26:18,807 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:18,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:18,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1799248610, now seen corresponding path program 4 times [2022-07-19 21:26:18,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:18,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312015886] [2022-07-19 21:26:18,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:18,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:18,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:18,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:18,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312015886] [2022-07-19 21:26:18,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312015886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:18,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:18,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:18,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185762757] [2022-07-19 21:26:18,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:18,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:18,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:18,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:18,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:18,934 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-19 21:26:18,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 488 transitions, 3002 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:18,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:18,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-19 21:26:18,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:21,423 INFO L129 PetriNetUnfolder]: 2600/9247 cut-off events. [2022-07-19 21:26:21,423 INFO L130 PetriNetUnfolder]: For 62690/63628 co-relation queries the response was YES. [2022-07-19 21:26:21,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34782 conditions, 9247 events. 2600/9247 cut-off events. For 62690/63628 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 100320 event pairs, 1230 based on Foata normal form. 15/8389 useless extension candidates. Maximal degree in co-relation 34675. Up to 2586 conditions per place. [2022-07-19 21:26:21,663 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 149 selfloop transitions, 76 changer transitions 26/613 dead transitions. [2022-07-19 21:26:21,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 613 transitions, 4524 flow [2022-07-19 21:26:21,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:26:21,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:26:21,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7380 transitions. [2022-07-19 21:26:21,670 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8810888252148997 [2022-07-19 21:26:21,670 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7380 transitions. [2022-07-19 21:26:21,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7380 transitions. [2022-07-19 21:26:21,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:21,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7380 transitions. [2022-07-19 21:26:21,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 307.5) internal successors, (7380), 24 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 349.0) internal successors, (8725), 25 states have internal predecessors, (8725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,686 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 349.0) internal successors, (8725), 25 states have internal predecessors, (8725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,686 INFO L186 Difference]: Start difference. First operand has 522 places, 488 transitions, 3002 flow. Second operand 24 states and 7380 transitions. [2022-07-19 21:26:21,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 613 transitions, 4524 flow [2022-07-19 21:26:22,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 613 transitions, 4210 flow, removed 157 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:22,109 INFO L242 Difference]: Finished difference. Result has 561 places, 517 transitions, 3442 flow [2022-07-19 21:26:22,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=2788, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3442, PETRI_PLACES=561, PETRI_TRANSITIONS=517} [2022-07-19 21:26:22,110 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 242 predicate places. [2022-07-19 21:26:22,110 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 517 transitions, 3442 flow [2022-07-19 21:26:22,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:22,110 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:22,111 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:22,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 21:26:22,111 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:22,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:22,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1102202296, now seen corresponding path program 5 times [2022-07-19 21:26:22,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:22,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356849511] [2022-07-19 21:26:22,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:22,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:22,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:22,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356849511] [2022-07-19 21:26:22,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356849511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:22,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:22,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:22,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631740984] [2022-07-19 21:26:22,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:22,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:22,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:22,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:22,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:22,252 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-19 21:26:22,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 517 transitions, 3442 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:22,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:22,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-19 21:26:22,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:24,951 INFO L129 PetriNetUnfolder]: 2772/9591 cut-off events. [2022-07-19 21:26:24,951 INFO L130 PetriNetUnfolder]: For 53349/53594 co-relation queries the response was YES. [2022-07-19 21:26:25,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36973 conditions, 9591 events. 2772/9591 cut-off events. For 53349/53594 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 105078 event pairs, 1548 based on Foata normal form. 16/8658 useless extension candidates. Maximal degree in co-relation 36847. Up to 3456 conditions per place. [2022-07-19 21:26:25,128 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 136 selfloop transitions, 86 changer transitions 24/608 dead transitions. [2022-07-19 21:26:25,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 608 transitions, 4884 flow [2022-07-19 21:26:25,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:26:25,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:26:25,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 6761 transitions. [2022-07-19 21:26:25,133 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8805678562125554 [2022-07-19 21:26:25,133 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 6761 transitions. [2022-07-19 21:26:25,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 6761 transitions. [2022-07-19 21:26:25,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:25,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 6761 transitions. [2022-07-19 21:26:25,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 307.3181818181818) internal successors, (6761), 22 states have internal predecessors, (6761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 349.0) internal successors, (8027), 23 states have internal predecessors, (8027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,150 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 349.0) internal successors, (8027), 23 states have internal predecessors, (8027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,150 INFO L186 Difference]: Start difference. First operand has 561 places, 517 transitions, 3442 flow. Second operand 22 states and 6761 transitions. [2022-07-19 21:26:25,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 608 transitions, 4884 flow [2022-07-19 21:26:25,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 608 transitions, 4714 flow, removed 85 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:25,616 INFO L242 Difference]: Finished difference. Result has 592 places, 549 transitions, 4075 flow [2022-07-19 21:26:25,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=3326, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4075, PETRI_PLACES=592, PETRI_TRANSITIONS=549} [2022-07-19 21:26:25,617 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 273 predicate places. [2022-07-19 21:26:25,617 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 549 transitions, 4075 flow [2022-07-19 21:26:25,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,618 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:25,618 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:25,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 21:26:25,619 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:25,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:25,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1500651626, now seen corresponding path program 6 times [2022-07-19 21:26:25,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:25,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948621420] [2022-07-19 21:26:25,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:25,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:25,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:25,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948621420] [2022-07-19 21:26:25,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948621420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:25,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:25,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:25,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974961939] [2022-07-19 21:26:25,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:25,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:25,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:25,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:25,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:25,749 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-19 21:26:25,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 549 transitions, 4075 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:25,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-19 21:26:25,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:28,612 INFO L129 PetriNetUnfolder]: 2868/9875 cut-off events. [2022-07-19 21:26:28,612 INFO L130 PetriNetUnfolder]: For 54695/54940 co-relation queries the response was YES. [2022-07-19 21:26:28,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38880 conditions, 9875 events. 2868/9875 cut-off events. For 54695/54940 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 108444 event pairs, 1602 based on Foata normal form. 16/8901 useless extension candidates. Maximal degree in co-relation 38741. Up to 3588 conditions per place. [2022-07-19 21:26:28,796 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 144 selfloop transitions, 89 changer transitions 16/611 dead transitions. [2022-07-19 21:26:28,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 611 transitions, 5274 flow [2022-07-19 21:26:28,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:26:28,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:26:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5234 transitions. [2022-07-19 21:26:28,801 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8821843923815945 [2022-07-19 21:26:28,801 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5234 transitions. [2022-07-19 21:26:28,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5234 transitions. [2022-07-19 21:26:28,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:28,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5234 transitions. [2022-07-19 21:26:28,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 307.88235294117646) internal successors, (5234), 17 states have internal predecessors, (5234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:28,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 349.0) internal successors, (6282), 18 states have internal predecessors, (6282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:28,812 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 349.0) internal successors, (6282), 18 states have internal predecessors, (6282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:28,812 INFO L186 Difference]: Start difference. First operand has 592 places, 549 transitions, 4075 flow. Second operand 17 states and 5234 transitions. [2022-07-19 21:26:28,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 611 transitions, 5274 flow [2022-07-19 21:26:29,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 611 transitions, 5080 flow, removed 97 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:29,309 INFO L242 Difference]: Finished difference. Result has 613 places, 570 transitions, 4522 flow [2022-07-19 21:26:29,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=3905, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4522, PETRI_PLACES=613, PETRI_TRANSITIONS=570} [2022-07-19 21:26:29,310 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 294 predicate places. [2022-07-19 21:26:29,310 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 570 transitions, 4522 flow [2022-07-19 21:26:29,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,311 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:29,311 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:29,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 21:26:29,312 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:29,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:29,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1109934054, now seen corresponding path program 7 times [2022-07-19 21:26:29,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:29,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677011052] [2022-07-19 21:26:29,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:29,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:29,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:29,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677011052] [2022-07-19 21:26:29,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677011052] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:29,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:29,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:29,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523720023] [2022-07-19 21:26:29,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:29,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:29,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:29,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:29,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:29,442 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-19 21:26:29,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 570 transitions, 4522 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:29,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-19 21:26:29,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:32,460 INFO L129 PetriNetUnfolder]: 2912/10075 cut-off events. [2022-07-19 21:26:32,460 INFO L130 PetriNetUnfolder]: For 61223/61468 co-relation queries the response was YES. [2022-07-19 21:26:32,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40948 conditions, 10075 events. 2912/10075 cut-off events. For 61223/61468 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 111685 event pairs, 1592 based on Foata normal form. 16/9100 useless extension candidates. Maximal degree in co-relation 40801. Up to 3678 conditions per place. [2022-07-19 21:26:32,645 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 153 selfloop transitions, 104 changer transitions 14/633 dead transitions. [2022-07-19 21:26:32,645 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 633 transitions, 5747 flow [2022-07-19 21:26:32,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:26:32,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:26:32,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4926 transitions. [2022-07-19 21:26:32,649 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8821633237822349 [2022-07-19 21:26:32,649 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4926 transitions. [2022-07-19 21:26:32,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4926 transitions. [2022-07-19 21:26:32,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:32,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4926 transitions. [2022-07-19 21:26:32,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 307.875) internal successors, (4926), 16 states have internal predecessors, (4926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:32,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 349.0) internal successors, (5933), 17 states have internal predecessors, (5933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:32,656 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 349.0) internal successors, (5933), 17 states have internal predecessors, (5933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:32,656 INFO L186 Difference]: Start difference. First operand has 613 places, 570 transitions, 4522 flow. Second operand 16 states and 4926 transitions. [2022-07-19 21:26:32,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 633 transitions, 5747 flow [2022-07-19 21:26:33,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 633 transitions, 5591 flow, removed 78 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:33,187 INFO L242 Difference]: Finished difference. Result has 633 places, 588 transitions, 4951 flow [2022-07-19 21:26:33,187 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=4370, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4951, PETRI_PLACES=633, PETRI_TRANSITIONS=588} [2022-07-19 21:26:33,188 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 314 predicate places. [2022-07-19 21:26:33,188 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 588 transitions, 4951 flow [2022-07-19 21:26:33,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:33,189 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:33,189 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:33,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 21:26:33,189 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:33,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:33,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1391434710, now seen corresponding path program 8 times [2022-07-19 21:26:33,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:33,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309625490] [2022-07-19 21:26:33,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:33,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:33,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:33,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309625490] [2022-07-19 21:26:33,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309625490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:33,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:33,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:33,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774209493] [2022-07-19 21:26:33,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:33,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:33,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:33,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:33,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:33,354 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-19 21:26:33,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 588 transitions, 4951 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:33,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:33,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-19 21:26:33,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:36,448 INFO L129 PetriNetUnfolder]: 2972/10527 cut-off events. [2022-07-19 21:26:36,448 INFO L130 PetriNetUnfolder]: For 67724/67969 co-relation queries the response was YES. [2022-07-19 21:26:36,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43534 conditions, 10527 events. 2972/10527 cut-off events. For 67724/67969 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 118832 event pairs, 1572 based on Foata normal form. 16/9534 useless extension candidates. Maximal degree in co-relation 43379. Up to 3574 conditions per place. [2022-07-19 21:26:36,641 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 176 selfloop transitions, 98 changer transitions 23/659 dead transitions. [2022-07-19 21:26:36,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 659 transitions, 6456 flow [2022-07-19 21:26:36,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:26:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:26:36,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6458 transitions. [2022-07-19 21:26:36,645 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8811570473461591 [2022-07-19 21:26:36,645 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6458 transitions. [2022-07-19 21:26:36,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6458 transitions. [2022-07-19 21:26:36,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:36,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6458 transitions. [2022-07-19 21:26:36,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 307.5238095238095) internal successors, (6458), 21 states have internal predecessors, (6458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 349.0) internal successors, (7678), 22 states have internal predecessors, (7678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,655 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 349.0) internal successors, (7678), 22 states have internal predecessors, (7678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,656 INFO L186 Difference]: Start difference. First operand has 633 places, 588 transitions, 4951 flow. Second operand 21 states and 6458 transitions. [2022-07-19 21:26:36,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 659 transitions, 6456 flow [2022-07-19 21:26:37,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 659 transitions, 6280 flow, removed 66 selfloop flow, removed 3 redundant places. [2022-07-19 21:26:37,425 INFO L242 Difference]: Finished difference. Result has 662 places, 612 transitions, 5624 flow [2022-07-19 21:26:37,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=4813, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5624, PETRI_PLACES=662, PETRI_TRANSITIONS=612} [2022-07-19 21:26:37,426 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 343 predicate places. [2022-07-19 21:26:37,426 INFO L495 AbstractCegarLoop]: Abstraction has has 662 places, 612 transitions, 5624 flow [2022-07-19 21:26:37,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:37,426 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:37,427 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:37,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 21:26:37,427 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:37,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:37,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1964860582, now seen corresponding path program 9 times [2022-07-19 21:26:37,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:37,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293894065] [2022-07-19 21:26:37,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:37,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:37,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:37,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293894065] [2022-07-19 21:26:37,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293894065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:37,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:37,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:37,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377049258] [2022-07-19 21:26:37,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:37,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:37,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:37,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:37,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:37,557 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-19 21:26:37,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 612 transitions, 5624 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:37,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:37,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-19 21:26:37,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:40,975 INFO L129 PetriNetUnfolder]: 2970/10451 cut-off events. [2022-07-19 21:26:40,977 INFO L130 PetriNetUnfolder]: For 76121/76366 co-relation queries the response was YES. [2022-07-19 21:26:41,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44934 conditions, 10451 events. 2970/10451 cut-off events. For 76121/76366 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 117477 event pairs, 1578 based on Foata normal form. 16/9462 useless extension candidates. Maximal degree in co-relation 44767. Up to 3736 conditions per place. [2022-07-19 21:26:41,253 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 166 selfloop transitions, 117 changer transitions 23/668 dead transitions. [2022-07-19 21:26:41,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 668 transitions, 6828 flow [2022-07-19 21:26:41,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:41,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:41,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5537 transitions. [2022-07-19 21:26:41,257 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8814071951607768 [2022-07-19 21:26:41,257 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5537 transitions. [2022-07-19 21:26:41,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5537 transitions. [2022-07-19 21:26:41,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:41,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5537 transitions. [2022-07-19 21:26:41,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 307.6111111111111) internal successors, (5537), 18 states have internal predecessors, (5537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:41,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 349.0) internal successors, (6631), 19 states have internal predecessors, (6631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:41,266 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 349.0) internal successors, (6631), 19 states have internal predecessors, (6631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:41,266 INFO L186 Difference]: Start difference. First operand has 662 places, 612 transitions, 5624 flow. Second operand 18 states and 5537 transitions. [2022-07-19 21:26:41,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 677 places, 668 transitions, 6828 flow [2022-07-19 21:26:41,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 668 transitions, 6596 flow, removed 116 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:41,910 INFO L242 Difference]: Finished difference. Result has 683 places, 622 transitions, 5910 flow [2022-07-19 21:26:41,910 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=5406, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5910, PETRI_PLACES=683, PETRI_TRANSITIONS=622} [2022-07-19 21:26:41,911 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 364 predicate places. [2022-07-19 21:26:41,912 INFO L495 AbstractCegarLoop]: Abstraction has has 683 places, 622 transitions, 5910 flow [2022-07-19 21:26:41,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:41,912 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:41,913 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:41,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 21:26:41,913 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:41,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:41,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1783709758, now seen corresponding path program 10 times [2022-07-19 21:26:41,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:41,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887905263] [2022-07-19 21:26:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:41,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:42,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:42,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:42,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887905263] [2022-07-19 21:26:42,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887905263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:42,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:42,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:42,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501649860] [2022-07-19 21:26:42,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:42,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:42,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:42,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:42,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:42,032 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-19 21:26:42,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 683 places, 622 transitions, 5910 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:42,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:42,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-19 21:26:42,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:45,532 INFO L129 PetriNetUnfolder]: 3000/10649 cut-off events. [2022-07-19 21:26:45,532 INFO L130 PetriNetUnfolder]: For 78399/78643 co-relation queries the response was YES. [2022-07-19 21:26:45,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46355 conditions, 10649 events. 3000/10649 cut-off events. For 78399/78643 co-relation queries the response was YES. Maximal size of possible extension queue 878. Compared 120635 event pairs, 1616 based on Foata normal form. 16/9642 useless extension candidates. Maximal degree in co-relation 46181. Up to 3798 conditions per place. [2022-07-19 21:26:45,736 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 168 selfloop transitions, 119 changer transitions 20/669 dead transitions. [2022-07-19 21:26:45,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 669 transitions, 7029 flow [2022-07-19 21:26:45,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:45,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5537 transitions. [2022-07-19 21:26:45,740 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8814071951607768 [2022-07-19 21:26:45,740 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5537 transitions. [2022-07-19 21:26:45,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5537 transitions. [2022-07-19 21:26:45,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:45,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5537 transitions. [2022-07-19 21:26:45,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 307.6111111111111) internal successors, (5537), 18 states have internal predecessors, (5537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:45,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 349.0) internal successors, (6631), 19 states have internal predecessors, (6631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:45,749 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 349.0) internal successors, (6631), 19 states have internal predecessors, (6631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:45,749 INFO L186 Difference]: Start difference. First operand has 683 places, 622 transitions, 5910 flow. Second operand 18 states and 5537 transitions. [2022-07-19 21:26:45,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 669 transitions, 7029 flow [2022-07-19 21:26:46,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 669 transitions, 6837 flow, removed 53 selfloop flow, removed 4 redundant places. [2022-07-19 21:26:46,609 INFO L242 Difference]: Finished difference. Result has 702 places, 636 transitions, 6304 flow [2022-07-19 21:26:46,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=5732, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6304, PETRI_PLACES=702, PETRI_TRANSITIONS=636} [2022-07-19 21:26:46,610 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 383 predicate places. [2022-07-19 21:26:46,610 INFO L495 AbstractCegarLoop]: Abstraction has has 702 places, 636 transitions, 6304 flow [2022-07-19 21:26:46,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:46,610 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:46,611 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:46,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-19 21:26:46,611 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:46,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:46,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1213203078, now seen corresponding path program 11 times [2022-07-19 21:26:46,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:46,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772085003] [2022-07-19 21:26:46,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:46,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:46,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:46,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:46,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772085003] [2022-07-19 21:26:46,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772085003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:46,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:46,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:46,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417416346] [2022-07-19 21:26:46,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:46,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:46,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:46,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:46,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:46,737 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-19 21:26:46,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 636 transitions, 6304 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:46,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:46,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-19 21:26:46,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand