./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/popl20-more-queue-add-3-nl.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 c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:36:43,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:36:43,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:36:43,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:36:43,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:36:43,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:36:43,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:36:43,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:36:43,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:36:43,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:36:43,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:36:43,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:36:43,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:36:43,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:36:43,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:36:43,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:36:43,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:36:43,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:36:43,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:36:43,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:36:43,872 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:36:43,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:36:43,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:36:43,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:36:43,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:36:43,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:36:43,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:36:43,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:36:43,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:36:43,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:36:43,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:36:43,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:36:43,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:36:43,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:36:43,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:36:43,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:36:43,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:36:43,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:36:43,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:36:43,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:36:43,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:36:43,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:36:43,893 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:36:43,913 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:36:43,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:36:43,915 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:36:43,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:36:43,916 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:36:43,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:36:43,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:36:43,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:36:43,917 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:36:43,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:36:43,918 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:36:43,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:36:43,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:36:43,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:36:43,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:36:43,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:36:43,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:36:43,919 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:36:43,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:36:43,920 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:36:43,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:36:43,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:36:43,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:36:43,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:36:43,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:36:43,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:36:43,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:36:43,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:36:43,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:36:43,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:36:43,928 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:36:43,929 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:36:43,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:36:43,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 [2022-07-12 10:36:44,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:36:44,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:36:44,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:36:44,129 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:36:44,130 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:36:44,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-07-12 10:36:44,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9709abd72/ceb39d27217a4814b5e780dacd07fff0/FLAGb1d0276d2 [2022-07-12 10:36:44,596 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:36:44,596 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-07-12 10:36:44,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9709abd72/ceb39d27217a4814b5e780dacd07fff0/FLAGb1d0276d2 [2022-07-12 10:36:44,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9709abd72/ceb39d27217a4814b5e780dacd07fff0 [2022-07-12 10:36:44,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:36:44,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:36:44,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:36:44,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:36:44,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:36:44,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:36:44" (1/1) ... [2022-07-12 10:36:44,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2070cd9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:44, skipping insertion in model container [2022-07-12 10:36:44,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:36:44" (1/1) ... [2022-07-12 10:36:44,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:36:44,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:36:44,802 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/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-07-12 10:36:44,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:36:44,814 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:36:44,836 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/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-07-12 10:36:44,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:36:44,850 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:36:44,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:44 WrapperNode [2022-07-12 10:36:44,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:36:44,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:36:44,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:36:44,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:36:44,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:44" (1/1) ... [2022-07-12 10:36:44,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:44" (1/1) ... [2022-07-12 10:36:44,888 INFO L137 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 257 [2022-07-12 10:36:44,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:36:44,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:36:44,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:36:44,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:36:44,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:44" (1/1) ... [2022-07-12 10:36:44,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:44" (1/1) ... [2022-07-12 10:36:44,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:44" (1/1) ... [2022-07-12 10:36:44,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:44" (1/1) ... [2022-07-12 10:36:44,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:44" (1/1) ... [2022-07-12 10:36:44,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:44" (1/1) ... [2022-07-12 10:36:44,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:44" (1/1) ... [2022-07-12 10:36:44,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:36:44,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:36:44,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:36:44,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:36:44,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:44" (1/1) ... [2022-07-12 10:36:44,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:36:44,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:36:44,975 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) [2022-07-12 10:36:44,982 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 [2022-07-12 10:36:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:36:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:36:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:36:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:36:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:36:45,004 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:36:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:36:45,004 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:36:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:36:45,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:36:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:36:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:36:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:36:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:36:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:36:45,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:36:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:36:45,007 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:36:45,086 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:36:45,087 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:36:45,409 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:36:45,513 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:36:45,513 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-12 10:36:45,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:36:45 BoogieIcfgContainer [2022-07-12 10:36:45,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:36:45,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:36:45,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:36:45,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:36:45,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:36:44" (1/3) ... [2022-07-12 10:36:45,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b12211d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:36:45, skipping insertion in model container [2022-07-12 10:36:45,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:44" (2/3) ... [2022-07-12 10:36:45,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b12211d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:36:45, skipping insertion in model container [2022-07-12 10:36:45,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:36:45" (3/3) ... [2022-07-12 10:36:45,523 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2022-07-12 10:36:45,527 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:36:45,535 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:36:45,535 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:36:45,535 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:36:45,600 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-12 10:36:45,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 215 places, 223 transitions, 470 flow [2022-07-12 10:36:45,724 INFO L129 PetriNetUnfolder]: 18/220 cut-off events. [2022-07-12 10:36:45,725 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:36:45,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 220 events. 18/220 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 125 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 180. Up to 3 conditions per place. [2022-07-12 10:36:45,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 223 transitions, 470 flow [2022-07-12 10:36:45,735 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 209 transitions, 436 flow [2022-07-12 10:36:45,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:36:45,749 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@6f910873, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@251a7a [2022-07-12 10:36:45,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:36:45,781 INFO L129 PetriNetUnfolder]: 18/208 cut-off events. [2022-07-12 10:36:45,782 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:36:45,782 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:36:45,783 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] [2022-07-12 10:36:45,783 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)] === [2022-07-12 10:36:45,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:36:45,788 INFO L85 PathProgramCache]: Analyzing trace with hash 827296655, now seen corresponding path program 1 times [2022-07-12 10:36:45,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:36:45,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732502480] [2022-07-12 10:36:45,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:45,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:36:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:46,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:36:46,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:36:46,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732502480] [2022-07-12 10:36:46,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732502480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:36:46,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:36:46,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:36:46,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621006712] [2022-07-12 10:36:46,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:36:46,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:36:46,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:36:46,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:36:46,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:36:46,128 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 223 [2022-07-12 10:36:46,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 209 transitions, 436 flow. Second operand has 2 states, 2 states have (on average 203.0) internal successors, (406), 2 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:46,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:36:46,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 223 [2022-07-12 10:36:46,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:36:46,286 INFO L129 PetriNetUnfolder]: 71/400 cut-off events. [2022-07-12 10:36:46,286 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-07-12 10:36:46,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 400 events. 71/400 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1182 event pairs, 38 based on Foata normal form. 60/419 useless extension candidates. Maximal degree in co-relation 353. Up to 106 conditions per place. [2022-07-12 10:36:46,294 INFO L132 encePairwiseOnDemand]: 210/223 looper letters, 11 selfloop transitions, 0 changer transitions 6/196 dead transitions. [2022-07-12 10:36:46,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 196 transitions, 432 flow [2022-07-12 10:36:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:36:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:36:46,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 420 transitions. [2022-07-12 10:36:46,312 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9417040358744395 [2022-07-12 10:36:46,313 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 420 transitions. [2022-07-12 10:36:46,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 420 transitions. [2022-07-12 10:36:46,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:36:46,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 420 transitions. [2022-07-12 10:36:46,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 210.0) internal successors, (420), 2 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:46,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:46,332 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:46,334 INFO L186 Difference]: Start difference. First operand has 201 places, 209 transitions, 436 flow. Second operand 2 states and 420 transitions. [2022-07-12 10:36:46,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 196 transitions, 432 flow [2022-07-12 10:36:46,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 196 transitions, 420 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:36:46,346 INFO L242 Difference]: Finished difference. Result has 196 places, 190 transitions, 386 flow [2022-07-12 10:36:46,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=386, PETRI_PLACES=196, PETRI_TRANSITIONS=190} [2022-07-12 10:36:46,352 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, -5 predicate places. [2022-07-12 10:36:46,352 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 190 transitions, 386 flow [2022-07-12 10:36:46,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 203.0) internal successors, (406), 2 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:46,353 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:36:46,354 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] [2022-07-12 10:36:46,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:36:46,355 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)] === [2022-07-12 10:36:46,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:36:46,356 INFO L85 PathProgramCache]: Analyzing trace with hash 484339319, now seen corresponding path program 1 times [2022-07-12 10:36:46,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:36:46,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553763495] [2022-07-12 10:36:46,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:46,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:36:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:36:46,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:36:46,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553763495] [2022-07-12 10:36:46,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553763495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:36:46,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:36:46,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:36:46,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542024654] [2022-07-12 10:36:46,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:36:46,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:36:46,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:36:46,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:36:46,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:36:46,612 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 223 [2022-07-12 10:36:46,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 190 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:46,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:36:46,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 223 [2022-07-12 10:36:46,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:36:46,825 INFO L129 PetriNetUnfolder]: 73/481 cut-off events. [2022-07-12 10:36:46,826 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-07-12 10:36:46,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 481 events. 73/481 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1446 event pairs, 38 based on Foata normal form. 11/453 useless extension candidates. Maximal degree in co-relation 649. Up to 118 conditions per place. [2022-07-12 10:36:46,830 INFO L132 encePairwiseOnDemand]: 211/223 looper letters, 33 selfloop transitions, 8 changer transitions 17/211 dead transitions. [2022-07-12 10:36:46,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 211 transitions, 547 flow [2022-07-12 10:36:46,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:36:46,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:36:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1609 transitions. [2022-07-12 10:36:46,834 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8016940707523668 [2022-07-12 10:36:46,834 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1609 transitions. [2022-07-12 10:36:46,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1609 transitions. [2022-07-12 10:36:46,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:36:46,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1609 transitions. [2022-07-12 10:36:46,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 178.77777777777777) internal successors, (1609), 9 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:46,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:46,846 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:46,846 INFO L186 Difference]: Start difference. First operand has 196 places, 190 transitions, 386 flow. Second operand 9 states and 1609 transitions. [2022-07-12 10:36:46,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 211 transitions, 547 flow [2022-07-12 10:36:46,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 211 transitions, 547 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:36:46,871 INFO L242 Difference]: Finished difference. Result has 200 places, 191 transitions, 418 flow [2022-07-12 10:36:46,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=418, PETRI_PLACES=200, PETRI_TRANSITIONS=191} [2022-07-12 10:36:46,872 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, -1 predicate places. [2022-07-12 10:36:46,873 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 191 transitions, 418 flow [2022-07-12 10:36:46,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:46,874 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:36:46,874 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] [2022-07-12 10:36:46,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:36:46,875 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)] === [2022-07-12 10:36:46,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:36:46,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1559305920, now seen corresponding path program 1 times [2022-07-12 10:36:46,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:36:46,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951898271] [2022-07-12 10:36:46,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:46,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:36:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:36:47,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:36:47,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951898271] [2022-07-12 10:36:47,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951898271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:36:47,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:36:47,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:36:47,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941613090] [2022-07-12 10:36:47,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:36:47,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:36:47,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:36:47,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:36:47,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:36:47,048 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 223 [2022-07-12 10:36:47,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 191 transitions, 418 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:47,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:36:47,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 223 [2022-07-12 10:36:47,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:36:47,233 INFO L129 PetriNetUnfolder]: 92/516 cut-off events. [2022-07-12 10:36:47,234 INFO L130 PetriNetUnfolder]: For 87/111 co-relation queries the response was YES. [2022-07-12 10:36:47,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 516 events. 92/516 cut-off events. For 87/111 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1787 event pairs, 50 based on Foata normal form. 13/481 useless extension candidates. Maximal degree in co-relation 812. Up to 115 conditions per place. [2022-07-12 10:36:47,238 INFO L132 encePairwiseOnDemand]: 214/223 looper letters, 36 selfloop transitions, 6 changer transitions 8/203 dead transitions. [2022-07-12 10:36:47,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 203 transitions, 552 flow [2022-07-12 10:36:47,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:36:47,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:36:47,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1255 transitions. [2022-07-12 10:36:47,243 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8039718129404229 [2022-07-12 10:36:47,243 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1255 transitions. [2022-07-12 10:36:47,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1255 transitions. [2022-07-12 10:36:47,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:36:47,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1255 transitions. [2022-07-12 10:36:47,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.28571428571428) internal successors, (1255), 7 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:47,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:47,250 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:47,250 INFO L186 Difference]: Start difference. First operand has 200 places, 191 transitions, 418 flow. Second operand 7 states and 1255 transitions. [2022-07-12 10:36:47,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 203 transitions, 552 flow [2022-07-12 10:36:47,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 203 transitions, 538 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-12 10:36:47,258 INFO L242 Difference]: Finished difference. Result has 201 places, 192 transitions, 428 flow [2022-07-12 10:36:47,258 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=201, PETRI_TRANSITIONS=192} [2022-07-12 10:36:47,260 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 0 predicate places. [2022-07-12 10:36:47,260 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 192 transitions, 428 flow [2022-07-12 10:36:47,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:47,261 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:36:47,261 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] [2022-07-12 10:36:47,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:36:47,262 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)] === [2022-07-12 10:36:47,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:36:47,263 INFO L85 PathProgramCache]: Analyzing trace with hash 840252989, now seen corresponding path program 1 times [2022-07-12 10:36:47,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:36:47,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974293831] [2022-07-12 10:36:47,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:47,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:36:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:36:47,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:36:47,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974293831] [2022-07-12 10:36:47,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974293831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:36:47,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:36:47,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:36:47,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818341716] [2022-07-12 10:36:47,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:36:47,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:36:47,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:36:47,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:36:47,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:36:47,537 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 223 [2022-07-12 10:36:47,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 192 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:47,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:36:47,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 223 [2022-07-12 10:36:47,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:36:47,617 INFO L129 PetriNetUnfolder]: 79/421 cut-off events. [2022-07-12 10:36:47,617 INFO L130 PetriNetUnfolder]: For 86/96 co-relation queries the response was YES. [2022-07-12 10:36:47,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 421 events. 79/421 cut-off events. For 86/96 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1218 event pairs, 23 based on Foata normal form. 6/405 useless extension candidates. Maximal degree in co-relation 657. Up to 79 conditions per place. [2022-07-12 10:36:47,620 INFO L132 encePairwiseOnDemand]: 218/223 looper letters, 20 selfloop transitions, 4 changer transitions 0/198 dead transitions. [2022-07-12 10:36:47,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 198 transitions, 498 flow [2022-07-12 10:36:47,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:36:47,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:36:47,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2022-07-12 10:36:47,623 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8938714499252616 [2022-07-12 10:36:47,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2022-07-12 10:36:47,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2022-07-12 10:36:47,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:36:47,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2022-07-12 10:36:47,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:47,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:47,627 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:47,627 INFO L186 Difference]: Start difference. First operand has 201 places, 192 transitions, 428 flow. Second operand 3 states and 598 transitions. [2022-07-12 10:36:47,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 198 transitions, 498 flow [2022-07-12 10:36:47,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 198 transitions, 488 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:36:47,632 INFO L242 Difference]: Finished difference. Result has 199 places, 193 transitions, 438 flow [2022-07-12 10:36:47,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=199, PETRI_TRANSITIONS=193} [2022-07-12 10:36:47,633 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, -2 predicate places. [2022-07-12 10:36:47,633 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 193 transitions, 438 flow [2022-07-12 10:36:47,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:47,634 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:36:47,634 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] [2022-07-12 10:36:47,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:36:47,635 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)] === [2022-07-12 10:36:47,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:36:47,635 INFO L85 PathProgramCache]: Analyzing trace with hash 183471921, now seen corresponding path program 2 times [2022-07-12 10:36:47,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:36:47,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379898391] [2022-07-12 10:36:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:47,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:36:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:36:47,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:36:47,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379898391] [2022-07-12 10:36:47,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379898391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:36:47,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:36:47,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:36:47,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773937994] [2022-07-12 10:36:47,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:36:47,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:36:47,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:36:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:36:47,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:36:47,764 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 223 [2022-07-12 10:36:47,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 193 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:47,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:36:47,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 223 [2022-07-12 10:36:47,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:36:47,829 INFO L129 PetriNetUnfolder]: 58/373 cut-off events. [2022-07-12 10:36:47,829 INFO L130 PetriNetUnfolder]: For 91/105 co-relation queries the response was YES. [2022-07-12 10:36:47,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 373 events. 58/373 cut-off events. For 91/105 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 895 event pairs, 9 based on Foata normal form. 2/351 useless extension candidates. Maximal degree in co-relation 593. Up to 91 conditions per place. [2022-07-12 10:36:47,832 INFO L132 encePairwiseOnDemand]: 219/223 looper letters, 17 selfloop transitions, 3 changer transitions 0/197 dead transitions. [2022-07-12 10:36:47,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 197 transitions, 492 flow [2022-07-12 10:36:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:36:47,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:36:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 602 transitions. [2022-07-12 10:36:47,834 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8998505231689088 [2022-07-12 10:36:47,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 602 transitions. [2022-07-12 10:36:47,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 602 transitions. [2022-07-12 10:36:47,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:36:47,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 602 transitions. [2022-07-12 10:36:47,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:47,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:47,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:47,838 INFO L186 Difference]: Start difference. First operand has 199 places, 193 transitions, 438 flow. Second operand 3 states and 602 transitions. [2022-07-12 10:36:47,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 197 transitions, 492 flow [2022-07-12 10:36:47,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 197 transitions, 482 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-12 10:36:47,844 INFO L242 Difference]: Finished difference. Result has 200 places, 195 transitions, 451 flow [2022-07-12 10:36:47,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=451, PETRI_PLACES=200, PETRI_TRANSITIONS=195} [2022-07-12 10:36:47,846 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, -1 predicate places. [2022-07-12 10:36:47,846 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 195 transitions, 451 flow [2022-07-12 10:36:47,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:47,847 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:36:47,847 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] [2022-07-12 10:36:47,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:36:47,847 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)] === [2022-07-12 10:36:47,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:36:47,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2102428561, now seen corresponding path program 3 times [2022-07-12 10:36:47,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:36:47,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816401024] [2022-07-12 10:36:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:47,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:36:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:36:48,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:36:48,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816401024] [2022-07-12 10:36:48,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816401024] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:36:48,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:36:48,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:36:48,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520047913] [2022-07-12 10:36:48,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:36:48,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:36:48,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:36:48,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:36:48,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:36:48,797 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:36:48,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 195 transitions, 451 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:48,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:36:48,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:36:48,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:36:49,613 INFO L129 PetriNetUnfolder]: 840/1884 cut-off events. [2022-07-12 10:36:49,613 INFO L130 PetriNetUnfolder]: For 804/826 co-relation queries the response was YES. [2022-07-12 10:36:49,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3982 conditions, 1884 events. 840/1884 cut-off events. For 804/826 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 11336 event pairs, 431 based on Foata normal form. 1/1729 useless extension candidates. Maximal degree in co-relation 3973. Up to 983 conditions per place. [2022-07-12 10:36:49,627 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 114 selfloop transitions, 41 changer transitions 5/295 dead transitions. [2022-07-12 10:36:49,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 295 transitions, 1080 flow [2022-07-12 10:36:49,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:36:49,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:36:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2934 transitions. [2022-07-12 10:36:49,633 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6924710880339863 [2022-07-12 10:36:49,634 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2934 transitions. [2022-07-12 10:36:49,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2934 transitions. [2022-07-12 10:36:49,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:36:49,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2934 transitions. [2022-07-12 10:36:49,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.42105263157896) internal successors, (2934), 19 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:49,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:49,648 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:49,648 INFO L186 Difference]: Start difference. First operand has 200 places, 195 transitions, 451 flow. Second operand 19 states and 2934 transitions. [2022-07-12 10:36:49,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 295 transitions, 1080 flow [2022-07-12 10:36:49,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 295 transitions, 1061 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-07-12 10:36:49,654 INFO L242 Difference]: Finished difference. Result has 226 places, 233 transitions, 672 flow [2022-07-12 10:36:49,654 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=672, PETRI_PLACES=226, PETRI_TRANSITIONS=233} [2022-07-12 10:36:49,655 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 25 predicate places. [2022-07-12 10:36:49,655 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 233 transitions, 672 flow [2022-07-12 10:36:49,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:49,656 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:36:49,657 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] [2022-07-12 10:36:49,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:36:49,657 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)] === [2022-07-12 10:36:49,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:36:49,658 INFO L85 PathProgramCache]: Analyzing trace with hash 556022067, now seen corresponding path program 4 times [2022-07-12 10:36:49,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:36:49,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149288914] [2022-07-12 10:36:49,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:49,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:36:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:36:50,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:36:50,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149288914] [2022-07-12 10:36:50,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149288914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:36:50,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:36:50,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:36:50,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257925770] [2022-07-12 10:36:50,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:36:50,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:36:50,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:36:50,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:36:50,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:36:50,384 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:36:50,387 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 233 transitions, 672 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:50,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:36:50,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:36:50,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:36:51,439 INFO L129 PetriNetUnfolder]: 993/2361 cut-off events. [2022-07-12 10:36:51,440 INFO L130 PetriNetUnfolder]: For 1729/1749 co-relation queries the response was YES. [2022-07-12 10:36:51,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5770 conditions, 2361 events. 993/2361 cut-off events. For 1729/1749 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 16382 event pairs, 258 based on Foata normal form. 12/2282 useless extension candidates. Maximal degree in co-relation 5752. Up to 1050 conditions per place. [2022-07-12 10:36:51,458 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 135 selfloop transitions, 56 changer transitions 5/331 dead transitions. [2022-07-12 10:36:51,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 331 transitions, 1486 flow [2022-07-12 10:36:51,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:36:51,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:36:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3091 transitions. [2022-07-12 10:36:51,466 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6930493273542601 [2022-07-12 10:36:51,466 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3091 transitions. [2022-07-12 10:36:51,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3091 transitions. [2022-07-12 10:36:51,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:36:51,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3091 transitions. [2022-07-12 10:36:51,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.55) internal successors, (3091), 20 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:51,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:51,482 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:51,482 INFO L186 Difference]: Start difference. First operand has 226 places, 233 transitions, 672 flow. Second operand 20 states and 3091 transitions. [2022-07-12 10:36:51,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 331 transitions, 1486 flow [2022-07-12 10:36:51,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 331 transitions, 1474 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-12 10:36:51,497 INFO L242 Difference]: Finished difference. Result has 249 places, 257 transitions, 981 flow [2022-07-12 10:36:51,497 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=981, PETRI_PLACES=249, PETRI_TRANSITIONS=257} [2022-07-12 10:36:51,498 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 48 predicate places. [2022-07-12 10:36:51,498 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 257 transitions, 981 flow [2022-07-12 10:36:51,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:51,499 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:36:51,499 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] [2022-07-12 10:36:51,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:36:51,500 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)] === [2022-07-12 10:36:51,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:36:51,501 INFO L85 PathProgramCache]: Analyzing trace with hash 302110899, now seen corresponding path program 5 times [2022-07-12 10:36:51,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:36:51,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117785162] [2022-07-12 10:36:51,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:51,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:36:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:52,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:36:52,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:36:52,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117785162] [2022-07-12 10:36:52,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117785162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:36:52,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:36:52,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:36:52,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253322148] [2022-07-12 10:36:52,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:36:52,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:36:52,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:36:52,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:36:52,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:36:52,164 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:36:52,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 257 transitions, 981 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:52,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:36:52,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:36:52,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:36:53,214 INFO L129 PetriNetUnfolder]: 1046/2570 cut-off events. [2022-07-12 10:36:53,214 INFO L130 PetriNetUnfolder]: For 3617/3638 co-relation queries the response was YES. [2022-07-12 10:36:53,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7077 conditions, 2570 events. 1046/2570 cut-off events. For 3617/3638 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 18405 event pairs, 279 based on Foata normal form. 11/2480 useless extension candidates. Maximal degree in co-relation 7049. Up to 1283 conditions per place. [2022-07-12 10:36:53,236 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 144 selfloop transitions, 53 changer transitions 5/337 dead transitions. [2022-07-12 10:36:53,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 337 transitions, 1783 flow [2022-07-12 10:36:53,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:36:53,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:36:53,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3086 transitions. [2022-07-12 10:36:53,245 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6919282511210763 [2022-07-12 10:36:53,245 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3086 transitions. [2022-07-12 10:36:53,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3086 transitions. [2022-07-12 10:36:53,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:36:53,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3086 transitions. [2022-07-12 10:36:53,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.3) internal successors, (3086), 20 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:53,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:53,272 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:53,272 INFO L186 Difference]: Start difference. First operand has 249 places, 257 transitions, 981 flow. Second operand 20 states and 3086 transitions. [2022-07-12 10:36:53,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 337 transitions, 1783 flow [2022-07-12 10:36:53,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 337 transitions, 1705 flow, removed 23 selfloop flow, removed 8 redundant places. [2022-07-12 10:36:53,291 INFO L242 Difference]: Finished difference. Result has 265 places, 268 transitions, 1133 flow [2022-07-12 10:36:53,292 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1133, PETRI_PLACES=265, PETRI_TRANSITIONS=268} [2022-07-12 10:36:53,293 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 64 predicate places. [2022-07-12 10:36:53,294 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 268 transitions, 1133 flow [2022-07-12 10:36:53,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:53,295 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:36:53,295 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] [2022-07-12 10:36:53,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:36:53,295 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)] === [2022-07-12 10:36:53,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:36:53,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1098740451, now seen corresponding path program 6 times [2022-07-12 10:36:53,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:36:53,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335892724] [2022-07-12 10:36:53,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:53,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:36:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:36:54,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:36:54,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335892724] [2022-07-12 10:36:54,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335892724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:36:54,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:36:54,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:36:54,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264355883] [2022-07-12 10:36:54,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:36:54,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:36:54,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:36:54,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:36:54,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:36:54,014 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:36:54,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 268 transitions, 1133 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:54,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:36:54,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:36:54,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:36:54,885 INFO L129 PetriNetUnfolder]: 1094/2591 cut-off events. [2022-07-12 10:36:54,885 INFO L130 PetriNetUnfolder]: For 5113/5121 co-relation queries the response was YES. [2022-07-12 10:36:54,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7836 conditions, 2591 events. 1094/2591 cut-off events. For 5113/5121 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 18248 event pairs, 585 based on Foata normal form. 1/2490 useless extension candidates. Maximal degree in co-relation 7802. Up to 1456 conditions per place. [2022-07-12 10:36:54,915 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 147 selfloop transitions, 53 changer transitions 5/340 dead transitions. [2022-07-12 10:36:54,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 340 transitions, 1978 flow [2022-07-12 10:36:54,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:36:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:36:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2782 transitions. [2022-07-12 10:36:54,972 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.693074240159442 [2022-07-12 10:36:54,972 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2782 transitions. [2022-07-12 10:36:54,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2782 transitions. [2022-07-12 10:36:54,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:36:54,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2782 transitions. [2022-07-12 10:36:54,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.55555555555554) internal successors, (2782), 18 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:54,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:54,987 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:54,987 INFO L186 Difference]: Start difference. First operand has 265 places, 268 transitions, 1133 flow. Second operand 18 states and 2782 transitions. [2022-07-12 10:36:54,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 340 transitions, 1978 flow [2022-07-12 10:36:55,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 340 transitions, 1838 flow, removed 28 selfloop flow, removed 13 redundant places. [2022-07-12 10:36:55,010 INFO L242 Difference]: Finished difference. Result has 275 places, 283 transitions, 1324 flow [2022-07-12 10:36:55,010 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1324, PETRI_PLACES=275, PETRI_TRANSITIONS=283} [2022-07-12 10:36:55,011 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 74 predicate places. [2022-07-12 10:36:55,011 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 283 transitions, 1324 flow [2022-07-12 10:36:55,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:55,012 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:36:55,013 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] [2022-07-12 10:36:55,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:36:55,013 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)] === [2022-07-12 10:36:55,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:36:55,014 INFO L85 PathProgramCache]: Analyzing trace with hash 646260783, now seen corresponding path program 7 times [2022-07-12 10:36:55,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:36:55,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227584288] [2022-07-12 10:36:55,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:55,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:36:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:55,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:36:55,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:36:55,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227584288] [2022-07-12 10:36:55,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227584288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:36:55,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:36:55,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:36:55,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677334079] [2022-07-12 10:36:55,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:36:55,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:36:55,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:36:55,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:36:55,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:36:55,724 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:36:55,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 283 transitions, 1324 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:55,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:36:55,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:36:55,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:36:56,771 INFO L129 PetriNetUnfolder]: 1154/2843 cut-off events. [2022-07-12 10:36:56,771 INFO L130 PetriNetUnfolder]: For 7581/7595 co-relation queries the response was YES. [2022-07-12 10:36:56,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8943 conditions, 2843 events. 1154/2843 cut-off events. For 7581/7595 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 21169 event pairs, 361 based on Foata normal form. 5/2728 useless extension candidates. Maximal degree in co-relation 8902. Up to 1453 conditions per place. [2022-07-12 10:36:56,797 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 158 selfloop transitions, 60 changer transitions 5/358 dead transitions. [2022-07-12 10:36:56,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 358 transitions, 2253 flow [2022-07-12 10:36:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:36:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:36:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3086 transitions. [2022-07-12 10:36:56,805 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6919282511210763 [2022-07-12 10:36:56,805 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3086 transitions. [2022-07-12 10:36:56,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3086 transitions. [2022-07-12 10:36:56,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:36:56,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3086 transitions. [2022-07-12 10:36:56,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.3) internal successors, (3086), 20 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:56,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:56,820 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:56,820 INFO L186 Difference]: Start difference. First operand has 275 places, 283 transitions, 1324 flow. Second operand 20 states and 3086 transitions. [2022-07-12 10:36:56,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 358 transitions, 2253 flow [2022-07-12 10:36:56,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 358 transitions, 2158 flow, removed 31 selfloop flow, removed 8 redundant places. [2022-07-12 10:36:56,853 INFO L242 Difference]: Finished difference. Result has 290 places, 291 transitions, 1460 flow [2022-07-12 10:36:56,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1460, PETRI_PLACES=290, PETRI_TRANSITIONS=291} [2022-07-12 10:36:56,854 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 89 predicate places. [2022-07-12 10:36:56,854 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 291 transitions, 1460 flow [2022-07-12 10:36:56,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:56,855 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:36:56,855 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] [2022-07-12 10:36:56,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:36:56,855 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)] === [2022-07-12 10:36:56,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:36:56,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1779284135, now seen corresponding path program 8 times [2022-07-12 10:36:56,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:36:56,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72763432] [2022-07-12 10:36:56,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:56,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:36:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:36:57,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:36:57,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72763432] [2022-07-12 10:36:57,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72763432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:36:57,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:36:57,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:36:57,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98270094] [2022-07-12 10:36:57,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:36:57,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:36:57,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:36:57,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:36:57,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:36:57,497 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:36:57,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 291 transitions, 1460 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:57,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:36:57,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:36:57,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:36:58,477 INFO L129 PetriNetUnfolder]: 1204/2999 cut-off events. [2022-07-12 10:36:58,477 INFO L130 PetriNetUnfolder]: For 9883/9905 co-relation queries the response was YES. [2022-07-12 10:36:58,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9799 conditions, 2999 events. 1204/2999 cut-off events. For 9883/9905 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 23002 event pairs, 322 based on Foata normal form. 14/2894 useless extension candidates. Maximal degree in co-relation 9753. Up to 1551 conditions per place. [2022-07-12 10:36:58,513 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 162 selfloop transitions, 61 changer transitions 5/363 dead transitions. [2022-07-12 10:36:58,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 363 transitions, 2429 flow [2022-07-12 10:36:58,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:36:58,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:36:58,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3084 transitions. [2022-07-12 10:36:58,519 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6914798206278027 [2022-07-12 10:36:58,520 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3084 transitions. [2022-07-12 10:36:58,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3084 transitions. [2022-07-12 10:36:58,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:36:58,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3084 transitions. [2022-07-12 10:36:58,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.2) internal successors, (3084), 20 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:58,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:58,534 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:58,534 INFO L186 Difference]: Start difference. First operand has 290 places, 291 transitions, 1460 flow. Second operand 20 states and 3084 transitions. [2022-07-12 10:36:58,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 363 transitions, 2429 flow [2022-07-12 10:36:58,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 363 transitions, 2277 flow, removed 32 selfloop flow, removed 14 redundant places. [2022-07-12 10:36:58,573 INFO L242 Difference]: Finished difference. Result has 298 places, 300 transitions, 1585 flow [2022-07-12 10:36:58,573 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1585, PETRI_PLACES=298, PETRI_TRANSITIONS=300} [2022-07-12 10:36:58,574 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 97 predicate places. [2022-07-12 10:36:58,574 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 300 transitions, 1585 flow [2022-07-12 10:36:58,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:58,575 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:36:58,576 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] [2022-07-12 10:36:58,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:36:58,576 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)] === [2022-07-12 10:36:58,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:36:58,577 INFO L85 PathProgramCache]: Analyzing trace with hash 770213987, now seen corresponding path program 9 times [2022-07-12 10:36:58,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:36:58,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705915602] [2022-07-12 10:36:58,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:58,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:36:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:59,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:36:59,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:36:59,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705915602] [2022-07-12 10:36:59,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705915602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:36:59,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:36:59,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:36:59,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69688420] [2022-07-12 10:36:59,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:36:59,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:36:59,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:36:59,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:36:59,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:36:59,158 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:36:59,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 300 transitions, 1585 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:36:59,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:36:59,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:36:59,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:00,120 INFO L129 PetriNetUnfolder]: 1219/2956 cut-off events. [2022-07-12 10:37:00,121 INFO L130 PetriNetUnfolder]: For 11422/11438 co-relation queries the response was YES. [2022-07-12 10:37:00,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10171 conditions, 2956 events. 1219/2956 cut-off events. For 11422/11438 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 22244 event pairs, 517 based on Foata normal form. 8/2850 useless extension candidates. Maximal degree in co-relation 10121. Up to 1637 conditions per place. [2022-07-12 10:37:00,152 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 165 selfloop transitions, 59 changer transitions 5/364 dead transitions. [2022-07-12 10:37:00,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 364 transitions, 2507 flow [2022-07-12 10:37:00,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:37:00,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:37:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2926 transitions. [2022-07-12 10:37:00,157 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6905829596412556 [2022-07-12 10:37:00,157 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2926 transitions. [2022-07-12 10:37:00,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2926 transitions. [2022-07-12 10:37:00,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:00,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2926 transitions. [2022-07-12 10:37:00,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.0) internal successors, (2926), 19 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:00,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:00,168 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:00,168 INFO L186 Difference]: Start difference. First operand has 298 places, 300 transitions, 1585 flow. Second operand 19 states and 2926 transitions. [2022-07-12 10:37:00,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 364 transitions, 2507 flow [2022-07-12 10:37:00,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 364 transitions, 2341 flow, removed 38 selfloop flow, removed 15 redundant places. [2022-07-12 10:37:00,207 INFO L242 Difference]: Finished difference. Result has 303 places, 307 transitions, 1620 flow [2022-07-12 10:37:00,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1620, PETRI_PLACES=303, PETRI_TRANSITIONS=307} [2022-07-12 10:37:00,208 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 102 predicate places. [2022-07-12 10:37:00,208 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 307 transitions, 1620 flow [2022-07-12 10:37:00,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:00,209 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:00,209 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] [2022-07-12 10:37:00,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:37:00,210 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)] === [2022-07-12 10:37:00,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:00,210 INFO L85 PathProgramCache]: Analyzing trace with hash -939894311, now seen corresponding path program 10 times [2022-07-12 10:37:00,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:00,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757514336] [2022-07-12 10:37:00,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:00,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:00,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:00,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:00,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757514336] [2022-07-12 10:37:00,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757514336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:00,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:00,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:00,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235668652] [2022-07-12 10:37:00,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:00,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:00,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:00,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:00,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:00,874 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:00,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 307 transitions, 1620 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:00,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:00,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:00,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:01,855 INFO L129 PetriNetUnfolder]: 1368/3369 cut-off events. [2022-07-12 10:37:01,855 INFO L130 PetriNetUnfolder]: For 13746/13754 co-relation queries the response was YES. [2022-07-12 10:37:01,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11691 conditions, 3369 events. 1368/3369 cut-off events. For 13746/13754 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 26686 event pairs, 553 based on Foata normal form. 5/3231 useless extension candidates. Maximal degree in co-relation 11638. Up to 1794 conditions per place. [2022-07-12 10:37:01,887 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 195 selfloop transitions, 56 changer transitions 5/391 dead transitions. [2022-07-12 10:37:01,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 391 transitions, 2799 flow [2022-07-12 10:37:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:37:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:37:01,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3090 transitions. [2022-07-12 10:37:01,891 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6928251121076233 [2022-07-12 10:37:01,891 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3090 transitions. [2022-07-12 10:37:01,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3090 transitions. [2022-07-12 10:37:01,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:01,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3090 transitions. [2022-07-12 10:37:01,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.5) internal successors, (3090), 20 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:01,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:01,901 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:01,901 INFO L186 Difference]: Start difference. First operand has 303 places, 307 transitions, 1620 flow. Second operand 20 states and 3090 transitions. [2022-07-12 10:37:01,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 391 transitions, 2799 flow [2022-07-12 10:37:01,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 391 transitions, 2701 flow, removed 12 selfloop flow, removed 12 redundant places. [2022-07-12 10:37:01,943 INFO L242 Difference]: Finished difference. Result has 316 places, 321 transitions, 1867 flow [2022-07-12 10:37:01,944 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1867, PETRI_PLACES=316, PETRI_TRANSITIONS=321} [2022-07-12 10:37:01,945 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 115 predicate places. [2022-07-12 10:37:01,945 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 321 transitions, 1867 flow [2022-07-12 10:37:01,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:01,946 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:01,946 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] [2022-07-12 10:37:01,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:37:01,946 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)] === [2022-07-12 10:37:01,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:01,947 INFO L85 PathProgramCache]: Analyzing trace with hash 647184495, now seen corresponding path program 11 times [2022-07-12 10:37:01,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:01,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280233905] [2022-07-12 10:37:01,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:01,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:02,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:02,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:02,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280233905] [2022-07-12 10:37:02,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280233905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:02,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:02,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:02,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557519851] [2022-07-12 10:37:02,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:02,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:02,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:02,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:02,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:02,501 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:02,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 321 transitions, 1867 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:02,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:02,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:02,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:03,339 INFO L129 PetriNetUnfolder]: 1378/3334 cut-off events. [2022-07-12 10:37:03,340 INFO L130 PetriNetUnfolder]: For 17020/17028 co-relation queries the response was YES. [2022-07-12 10:37:03,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12444 conditions, 3334 events. 1378/3334 cut-off events. For 17020/17028 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 26102 event pairs, 772 based on Foata normal form. 1/3199 useless extension candidates. Maximal degree in co-relation 12384. Up to 1973 conditions per place. [2022-07-12 10:37:03,370 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 181 selfloop transitions, 51 changer transitions 5/372 dead transitions. [2022-07-12 10:37:03,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 372 transitions, 2792 flow [2022-07-12 10:37:03,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:37:03,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:37:03,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2765 transitions. [2022-07-12 10:37:03,374 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6888390632785252 [2022-07-12 10:37:03,374 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2765 transitions. [2022-07-12 10:37:03,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2765 transitions. [2022-07-12 10:37:03,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:03,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2765 transitions. [2022-07-12 10:37:03,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.61111111111111) internal successors, (2765), 18 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:03,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:03,382 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:03,382 INFO L186 Difference]: Start difference. First operand has 316 places, 321 transitions, 1867 flow. Second operand 18 states and 2765 transitions. [2022-07-12 10:37:03,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 372 transitions, 2792 flow [2022-07-12 10:37:03,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 372 transitions, 2596 flow, removed 69 selfloop flow, removed 11 redundant places. [2022-07-12 10:37:03,450 INFO L242 Difference]: Finished difference. Result has 324 places, 329 transitions, 1906 flow [2022-07-12 10:37:03,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1906, PETRI_PLACES=324, PETRI_TRANSITIONS=329} [2022-07-12 10:37:03,451 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 123 predicate places. [2022-07-12 10:37:03,451 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 329 transitions, 1906 flow [2022-07-12 10:37:03,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:03,452 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:03,452 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] [2022-07-12 10:37:03,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:37:03,453 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)] === [2022-07-12 10:37:03,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:03,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1988923285, now seen corresponding path program 12 times [2022-07-12 10:37:03,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:03,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025437640] [2022-07-12 10:37:03,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:03,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:04,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:04,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:04,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025437640] [2022-07-12 10:37:04,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025437640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:04,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:04,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:04,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398549439] [2022-07-12 10:37:04,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:04,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:04,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:04,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:04,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:04,144 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:04,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 329 transitions, 1906 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:04,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:04,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:04,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:05,295 INFO L129 PetriNetUnfolder]: 1450/3535 cut-off events. [2022-07-12 10:37:05,296 INFO L130 PetriNetUnfolder]: For 19835/19839 co-relation queries the response was YES. [2022-07-12 10:37:05,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13281 conditions, 3535 events. 1450/3535 cut-off events. For 19835/19839 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 28258 event pairs, 754 based on Foata normal form. 2/3399 useless extension candidates. Maximal degree in co-relation 13218. Up to 2005 conditions per place. [2022-07-12 10:37:05,342 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 204 selfloop transitions, 61 changer transitions 5/405 dead transitions. [2022-07-12 10:37:05,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 405 transitions, 3113 flow [2022-07-12 10:37:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:37:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:37:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3085 transitions. [2022-07-12 10:37:05,346 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6917040358744395 [2022-07-12 10:37:05,346 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3085 transitions. [2022-07-12 10:37:05,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3085 transitions. [2022-07-12 10:37:05,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:05,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3085 transitions. [2022-07-12 10:37:05,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.25) internal successors, (3085), 20 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:05,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:05,355 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:05,355 INFO L186 Difference]: Start difference. First operand has 324 places, 329 transitions, 1906 flow. Second operand 20 states and 3085 transitions. [2022-07-12 10:37:05,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 405 transitions, 3113 flow [2022-07-12 10:37:05,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 405 transitions, 2975 flow, removed 37 selfloop flow, removed 11 redundant places. [2022-07-12 10:37:05,425 INFO L242 Difference]: Finished difference. Result has 338 places, 341 transitions, 2096 flow [2022-07-12 10:37:05,426 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2096, PETRI_PLACES=338, PETRI_TRANSITIONS=341} [2022-07-12 10:37:05,426 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 137 predicate places. [2022-07-12 10:37:05,427 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 341 transitions, 2096 flow [2022-07-12 10:37:05,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:05,428 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:05,428 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] [2022-07-12 10:37:05,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:37:05,428 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)] === [2022-07-12 10:37:05,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:05,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2032075091, now seen corresponding path program 13 times [2022-07-12 10:37:05,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:05,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491306603] [2022-07-12 10:37:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:05,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:06,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:06,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491306603] [2022-07-12 10:37:06,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491306603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:06,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:06,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:06,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148919707] [2022-07-12 10:37:06,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:06,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:06,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:06,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:06,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:06,047 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:06,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 341 transitions, 2096 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:06,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:06,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:06,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:07,145 INFO L129 PetriNetUnfolder]: 1506/3763 cut-off events. [2022-07-12 10:37:07,147 INFO L130 PetriNetUnfolder]: For 24870/24892 co-relation queries the response was YES. [2022-07-12 10:37:07,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14575 conditions, 3763 events. 1506/3763 cut-off events. For 24870/24892 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 31429 event pairs, 566 based on Foata normal form. 14/3625 useless extension candidates. Maximal degree in co-relation 14505. Up to 2105 conditions per place. [2022-07-12 10:37:07,187 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 209 selfloop transitions, 65 changer transitions 5/414 dead transitions. [2022-07-12 10:37:07,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 414 transitions, 3363 flow [2022-07-12 10:37:07,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:37:07,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:37:07,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3085 transitions. [2022-07-12 10:37:07,192 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6917040358744395 [2022-07-12 10:37:07,192 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3085 transitions. [2022-07-12 10:37:07,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3085 transitions. [2022-07-12 10:37:07,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:07,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3085 transitions. [2022-07-12 10:37:07,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.25) internal successors, (3085), 20 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:07,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:07,201 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:07,202 INFO L186 Difference]: Start difference. First operand has 338 places, 341 transitions, 2096 flow. Second operand 20 states and 3085 transitions. [2022-07-12 10:37:07,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 414 transitions, 3363 flow [2022-07-12 10:37:07,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 414 transitions, 3149 flow, removed 63 selfloop flow, removed 13 redundant places. [2022-07-12 10:37:07,287 INFO L242 Difference]: Finished difference. Result has 347 places, 353 transitions, 2255 flow [2022-07-12 10:37:07,288 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2255, PETRI_PLACES=347, PETRI_TRANSITIONS=353} [2022-07-12 10:37:07,289 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 146 predicate places. [2022-07-12 10:37:07,289 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 353 transitions, 2255 flow [2022-07-12 10:37:07,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:07,290 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:07,290 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] [2022-07-12 10:37:07,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 10:37:07,290 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)] === [2022-07-12 10:37:07,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:07,291 INFO L85 PathProgramCache]: Analyzing trace with hash 78013227, now seen corresponding path program 14 times [2022-07-12 10:37:07,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:07,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986530518] [2022-07-12 10:37:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:07,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:07,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:07,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:07,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986530518] [2022-07-12 10:37:07,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986530518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:07,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:07,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:07,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932672881] [2022-07-12 10:37:07,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:07,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:07,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:07,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:07,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:07,999 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:08,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 353 transitions, 2255 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:08,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:08,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:08,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:09,062 INFO L129 PetriNetUnfolder]: 1557/3826 cut-off events. [2022-07-12 10:37:09,062 INFO L130 PetriNetUnfolder]: For 29475/29485 co-relation queries the response was YES. [2022-07-12 10:37:09,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15481 conditions, 3826 events. 1557/3826 cut-off events. For 29475/29485 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 31413 event pairs, 823 based on Foata normal form. 2/3673 useless extension candidates. Maximal degree in co-relation 15407. Up to 2199 conditions per place. [2022-07-12 10:37:09,107 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 223 selfloop transitions, 63 changer transitions 5/426 dead transitions. [2022-07-12 10:37:09,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 426 transitions, 3589 flow [2022-07-12 10:37:09,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:37:09,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:37:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3089 transitions. [2022-07-12 10:37:09,119 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6926008968609866 [2022-07-12 10:37:09,119 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3089 transitions. [2022-07-12 10:37:09,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3089 transitions. [2022-07-12 10:37:09,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:09,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3089 transitions. [2022-07-12 10:37:09,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.45) internal successors, (3089), 20 states have internal predecessors, (3089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:09,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:09,136 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:09,136 INFO L186 Difference]: Start difference. First operand has 347 places, 353 transitions, 2255 flow. Second operand 20 states and 3089 transitions. [2022-07-12 10:37:09,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 426 transitions, 3589 flow [2022-07-12 10:37:09,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 426 transitions, 3370 flow, removed 63 selfloop flow, removed 14 redundant places. [2022-07-12 10:37:09,253 INFO L242 Difference]: Finished difference. Result has 355 places, 360 transitions, 2352 flow [2022-07-12 10:37:09,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2352, PETRI_PLACES=355, PETRI_TRANSITIONS=360} [2022-07-12 10:37:09,254 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 154 predicate places. [2022-07-12 10:37:09,254 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 360 transitions, 2352 flow [2022-07-12 10:37:09,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:09,255 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:09,255 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] [2022-07-12 10:37:09,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:37:09,256 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)] === [2022-07-12 10:37:09,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:09,257 INFO L85 PathProgramCache]: Analyzing trace with hash 320730751, now seen corresponding path program 15 times [2022-07-12 10:37:09,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:09,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401551990] [2022-07-12 10:37:09,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:09,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:09,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:09,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401551990] [2022-07-12 10:37:09,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401551990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:09,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:09,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:09,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8009352] [2022-07-12 10:37:09,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:09,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:09,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:09,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:09,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:09,856 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:09,858 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 360 transitions, 2352 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:09,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:09,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:09,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:11,081 INFO L129 PetriNetUnfolder]: 1584/3894 cut-off events. [2022-07-12 10:37:11,081 INFO L130 PetriNetUnfolder]: For 32976/32980 co-relation queries the response was YES. [2022-07-12 10:37:11,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16109 conditions, 3894 events. 1584/3894 cut-off events. For 32976/32980 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 32117 event pairs, 846 based on Foata normal form. 2/3736 useless extension candidates. Maximal degree in co-relation 16031. Up to 2271 conditions per place. [2022-07-12 10:37:11,120 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 220 selfloop transitions, 67 changer transitions 5/427 dead transitions. [2022-07-12 10:37:11,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 427 transitions, 3677 flow [2022-07-12 10:37:11,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:37:11,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:37:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2931 transitions. [2022-07-12 10:37:11,124 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6917630398867123 [2022-07-12 10:37:11,124 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2931 transitions. [2022-07-12 10:37:11,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2931 transitions. [2022-07-12 10:37:11,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:11,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2931 transitions. [2022-07-12 10:37:11,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.26315789473685) internal successors, (2931), 19 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:11,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:11,135 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:11,135 INFO L186 Difference]: Start difference. First operand has 355 places, 360 transitions, 2352 flow. Second operand 19 states and 2931 transitions. [2022-07-12 10:37:11,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 427 transitions, 3677 flow [2022-07-12 10:37:11,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 427 transitions, 3425 flow, removed 76 selfloop flow, removed 15 redundant places. [2022-07-12 10:37:11,225 INFO L242 Difference]: Finished difference. Result has 360 places, 370 transitions, 2439 flow [2022-07-12 10:37:11,225 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2147, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2439, PETRI_PLACES=360, PETRI_TRANSITIONS=370} [2022-07-12 10:37:11,225 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 159 predicate places. [2022-07-12 10:37:11,226 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 370 transitions, 2439 flow [2022-07-12 10:37:11,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:11,226 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:11,227 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] [2022-07-12 10:37:11,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 10:37:11,227 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)] === [2022-07-12 10:37:11,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:11,227 INFO L85 PathProgramCache]: Analyzing trace with hash 385169053, now seen corresponding path program 16 times [2022-07-12 10:37:11,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:11,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147215021] [2022-07-12 10:37:11,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:11,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:11,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:11,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:11,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147215021] [2022-07-12 10:37:11,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147215021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:11,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:11,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:11,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088186385] [2022-07-12 10:37:11,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:11,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:11,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:11,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:11,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:11,840 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:11,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 370 transitions, 2439 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:11,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:11,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:11,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:13,049 INFO L129 PetriNetUnfolder]: 1626/4018 cut-off events. [2022-07-12 10:37:13,050 INFO L130 PetriNetUnfolder]: For 34217/34225 co-relation queries the response was YES. [2022-07-12 10:37:13,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16699 conditions, 4018 events. 1626/4018 cut-off events. For 34217/34225 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 33557 event pairs, 863 based on Foata normal form. 1/3857 useless extension candidates. Maximal degree in co-relation 16618. Up to 2285 conditions per place. [2022-07-12 10:37:13,086 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 229 selfloop transitions, 62 changer transitions 5/431 dead transitions. [2022-07-12 10:37:13,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 431 transitions, 3727 flow [2022-07-12 10:37:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:37:13,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:37:13,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2779 transitions. [2022-07-12 10:37:13,089 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.692326856003986 [2022-07-12 10:37:13,089 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2779 transitions. [2022-07-12 10:37:13,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2779 transitions. [2022-07-12 10:37:13,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:13,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2779 transitions. [2022-07-12 10:37:13,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.38888888888889) internal successors, (2779), 18 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:13,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:13,096 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:13,097 INFO L186 Difference]: Start difference. First operand has 360 places, 370 transitions, 2439 flow. Second operand 18 states and 2779 transitions. [2022-07-12 10:37:13,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 431 transitions, 3727 flow [2022-07-12 10:37:13,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 431 transitions, 3586 flow, removed 27 selfloop flow, removed 12 redundant places. [2022-07-12 10:37:13,188 INFO L242 Difference]: Finished difference. Result has 368 places, 376 transitions, 2631 flow [2022-07-12 10:37:13,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2631, PETRI_PLACES=368, PETRI_TRANSITIONS=376} [2022-07-12 10:37:13,189 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 167 predicate places. [2022-07-12 10:37:13,189 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 376 transitions, 2631 flow [2022-07-12 10:37:13,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:13,190 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:13,190 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] [2022-07-12 10:37:13,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 10:37:13,190 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)] === [2022-07-12 10:37:13,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:13,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1319983059, now seen corresponding path program 17 times [2022-07-12 10:37:13,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:13,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949019953] [2022-07-12 10:37:13,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:13,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:13,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:13,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949019953] [2022-07-12 10:37:13,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949019953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:13,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:13,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:13,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262087534] [2022-07-12 10:37:13,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:13,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:13,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:13,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:13,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:13,772 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:13,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 376 transitions, 2631 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:13,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:13,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:13,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:14,785 INFO L129 PetriNetUnfolder]: 1677/4171 cut-off events. [2022-07-12 10:37:14,785 INFO L130 PetriNetUnfolder]: For 43022/43032 co-relation queries the response was YES. [2022-07-12 10:37:14,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17887 conditions, 4171 events. 1677/4171 cut-off events. For 43022/43032 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 35524 event pairs, 882 based on Foata normal form. 2/4012 useless extension candidates. Maximal degree in co-relation 17803. Up to 2380 conditions per place. [2022-07-12 10:37:14,916 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 238 selfloop transitions, 61 changer transitions 5/439 dead transitions. [2022-07-12 10:37:14,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 439 transitions, 3989 flow [2022-07-12 10:37:14,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:37:14,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:37:14,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2781 transitions. [2022-07-12 10:37:14,919 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6928251121076233 [2022-07-12 10:37:14,919 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2781 transitions. [2022-07-12 10:37:14,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2781 transitions. [2022-07-12 10:37:14,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:14,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2781 transitions. [2022-07-12 10:37:14,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.5) internal successors, (2781), 18 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:14,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:14,924 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:14,924 INFO L186 Difference]: Start difference. First operand has 368 places, 376 transitions, 2631 flow. Second operand 18 states and 2781 transitions. [2022-07-12 10:37:14,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 439 transitions, 3989 flow [2022-07-12 10:37:15,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 439 transitions, 3752 flow, removed 76 selfloop flow, removed 13 redundant places. [2022-07-12 10:37:15,019 INFO L242 Difference]: Finished difference. Result has 375 places, 383 transitions, 2742 flow [2022-07-12 10:37:15,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2405, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2742, PETRI_PLACES=375, PETRI_TRANSITIONS=383} [2022-07-12 10:37:15,020 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 174 predicate places. [2022-07-12 10:37:15,020 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 383 transitions, 2742 flow [2022-07-12 10:37:15,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:15,021 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:15,021 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] [2022-07-12 10:37:15,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 10:37:15,021 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)] === [2022-07-12 10:37:15,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:15,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1680284071, now seen corresponding path program 18 times [2022-07-12 10:37:15,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:15,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661604127] [2022-07-12 10:37:15,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:15,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:15,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:15,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:15,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661604127] [2022-07-12 10:37:15,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661604127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:15,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:15,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:15,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713757085] [2022-07-12 10:37:15,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:15,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:15,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:15,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:15,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:15,542 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:15,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 383 transitions, 2742 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:15,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:15,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:15,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:16,626 INFO L129 PetriNetUnfolder]: 1677/4157 cut-off events. [2022-07-12 10:37:16,626 INFO L130 PetriNetUnfolder]: For 44944/44954 co-relation queries the response was YES. [2022-07-12 10:37:16,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17952 conditions, 4157 events. 1677/4157 cut-off events. For 44944/44954 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 35307 event pairs, 895 based on Foata normal form. 2/3991 useless extension candidates. Maximal degree in co-relation 17864. Up to 2415 conditions per place. [2022-07-12 10:37:16,664 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 230 selfloop transitions, 61 changer transitions 5/431 dead transitions. [2022-07-12 10:37:16,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 431 transitions, 3869 flow [2022-07-12 10:37:16,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:37:16,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:37:16,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2768 transitions. [2022-07-12 10:37:16,672 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6895864474339811 [2022-07-12 10:37:16,672 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2768 transitions. [2022-07-12 10:37:16,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2768 transitions. [2022-07-12 10:37:16,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:16,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2768 transitions. [2022-07-12 10:37:16,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.77777777777777) internal successors, (2768), 18 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:16,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:16,680 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:16,680 INFO L186 Difference]: Start difference. First operand has 375 places, 383 transitions, 2742 flow. Second operand 18 states and 2768 transitions. [2022-07-12 10:37:16,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 431 transitions, 3869 flow [2022-07-12 10:37:16,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 431 transitions, 3673 flow, removed 68 selfloop flow, removed 12 redundant places. [2022-07-12 10:37:16,781 INFO L242 Difference]: Finished difference. Result has 382 places, 386 transitions, 2735 flow [2022-07-12 10:37:16,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2548, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2735, PETRI_PLACES=382, PETRI_TRANSITIONS=386} [2022-07-12 10:37:16,782 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 181 predicate places. [2022-07-12 10:37:16,783 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 386 transitions, 2735 flow [2022-07-12 10:37:16,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:16,783 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:16,783 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] [2022-07-12 10:37:16,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 10:37:16,784 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)] === [2022-07-12 10:37:16,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:16,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1246894767, now seen corresponding path program 19 times [2022-07-12 10:37:16,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:16,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493803737] [2022-07-12 10:37:16,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:16,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:17,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:17,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493803737] [2022-07-12 10:37:17,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493803737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:17,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:17,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:17,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907718360] [2022-07-12 10:37:17,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:17,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:17,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:17,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:17,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:17,278 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:17,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 386 transitions, 2735 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:17,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:17,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:17,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:18,335 INFO L129 PetriNetUnfolder]: 1685/4186 cut-off events. [2022-07-12 10:37:18,335 INFO L130 PetriNetUnfolder]: For 43254/43264 co-relation queries the response was YES. [2022-07-12 10:37:18,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17991 conditions, 4186 events. 1685/4186 cut-off events. For 43254/43264 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 35635 event pairs, 894 based on Foata normal form. 2/4017 useless extension candidates. Maximal degree in co-relation 17900. Up to 2415 conditions per place. [2022-07-12 10:37:18,376 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 235 selfloop transitions, 64 changer transitions 5/439 dead transitions. [2022-07-12 10:37:18,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 439 transitions, 3962 flow [2022-07-12 10:37:18,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:37:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:37:18,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2770 transitions. [2022-07-12 10:37:18,380 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6900847035376183 [2022-07-12 10:37:18,380 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2770 transitions. [2022-07-12 10:37:18,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2770 transitions. [2022-07-12 10:37:18,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:18,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2770 transitions. [2022-07-12 10:37:18,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.88888888888889) internal successors, (2770), 18 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:18,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:18,387 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:18,387 INFO L186 Difference]: Start difference. First operand has 382 places, 386 transitions, 2735 flow. Second operand 18 states and 2770 transitions. [2022-07-12 10:37:18,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 439 transitions, 3962 flow [2022-07-12 10:37:18,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 439 transitions, 3782 flow, removed 31 selfloop flow, removed 15 redundant places. [2022-07-12 10:37:18,520 INFO L242 Difference]: Finished difference. Result has 387 places, 392 transitions, 2828 flow [2022-07-12 10:37:18,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2557, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2828, PETRI_PLACES=387, PETRI_TRANSITIONS=392} [2022-07-12 10:37:18,521 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 186 predicate places. [2022-07-12 10:37:18,521 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 392 transitions, 2828 flow [2022-07-12 10:37:18,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:18,521 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:18,522 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] [2022-07-12 10:37:18,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 10:37:18,522 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)] === [2022-07-12 10:37:18,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:18,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1506960225, now seen corresponding path program 20 times [2022-07-12 10:37:18,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:18,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713985966] [2022-07-12 10:37:18,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:18,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:19,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:19,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713985966] [2022-07-12 10:37:19,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713985966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:19,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:19,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:19,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039181599] [2022-07-12 10:37:19,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:19,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:19,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:19,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:19,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:19,113 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:19,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 392 transitions, 2828 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:19,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:19,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:19,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:20,336 INFO L129 PetriNetUnfolder]: 1697/4270 cut-off events. [2022-07-12 10:37:20,336 INFO L130 PetriNetUnfolder]: For 46668/46683 co-relation queries the response was YES. [2022-07-12 10:37:20,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18391 conditions, 4270 events. 1697/4270 cut-off events. For 46668/46683 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 37208 event pairs, 729 based on Foata normal form. 5/4092 useless extension candidates. Maximal degree in co-relation 18297. Up to 2439 conditions per place. [2022-07-12 10:37:20,376 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 242 selfloop transitions, 66 changer transitions 5/448 dead transitions. [2022-07-12 10:37:20,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 448 transitions, 4148 flow [2022-07-12 10:37:20,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:37:20,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:37:20,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2774 transitions. [2022-07-12 10:37:20,378 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6910812157448929 [2022-07-12 10:37:20,378 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2774 transitions. [2022-07-12 10:37:20,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2774 transitions. [2022-07-12 10:37:20,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:20,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2774 transitions. [2022-07-12 10:37:20,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.11111111111111) internal successors, (2774), 18 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:20,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:20,385 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:20,385 INFO L186 Difference]: Start difference. First operand has 387 places, 392 transitions, 2828 flow. Second operand 18 states and 2774 transitions. [2022-07-12 10:37:20,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 448 transitions, 4148 flow [2022-07-12 10:37:20,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 448 transitions, 3898 flow, removed 46 selfloop flow, removed 15 redundant places. [2022-07-12 10:37:20,493 INFO L242 Difference]: Finished difference. Result has 392 places, 400 transitions, 2906 flow [2022-07-12 10:37:20,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2586, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2906, PETRI_PLACES=392, PETRI_TRANSITIONS=400} [2022-07-12 10:37:20,494 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 191 predicate places. [2022-07-12 10:37:20,494 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 400 transitions, 2906 flow [2022-07-12 10:37:20,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:20,495 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:20,495 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] [2022-07-12 10:37:20,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 10:37:20,495 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)] === [2022-07-12 10:37:20,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:20,495 INFO L85 PathProgramCache]: Analyzing trace with hash 386036189, now seen corresponding path program 21 times [2022-07-12 10:37:20,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:20,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237055826] [2022-07-12 10:37:20,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:20,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:21,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:21,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:21,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237055826] [2022-07-12 10:37:21,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237055826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:21,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:21,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:21,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336473211] [2022-07-12 10:37:21,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:21,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:21,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:21,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:21,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:21,070 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:21,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 400 transitions, 2906 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:21,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:21,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:21,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:22,167 INFO L129 PetriNetUnfolder]: 1703/4365 cut-off events. [2022-07-12 10:37:22,168 INFO L130 PetriNetUnfolder]: For 48947/48968 co-relation queries the response was YES. [2022-07-12 10:37:22,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18472 conditions, 4365 events. 1703/4365 cut-off events. For 48947/48968 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 38360 event pairs, 712 based on Foata normal form. 11/4186 useless extension candidates. Maximal degree in co-relation 18376. Up to 2453 conditions per place. [2022-07-12 10:37:22,213 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 248 selfloop transitions, 63 changer transitions 5/451 dead transitions. [2022-07-12 10:37:22,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 451 transitions, 4149 flow [2022-07-12 10:37:22,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:37:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:37:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2772 transitions. [2022-07-12 10:37:22,217 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6905829596412556 [2022-07-12 10:37:22,217 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2772 transitions. [2022-07-12 10:37:22,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2772 transitions. [2022-07-12 10:37:22,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:22,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2772 transitions. [2022-07-12 10:37:22,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.0) internal successors, (2772), 18 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:22,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:22,225 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:22,225 INFO L186 Difference]: Start difference. First operand has 392 places, 400 transitions, 2906 flow. Second operand 18 states and 2772 transitions. [2022-07-12 10:37:22,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 451 transitions, 4149 flow [2022-07-12 10:37:22,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 451 transitions, 3915 flow, removed 56 selfloop flow, removed 14 redundant places. [2022-07-12 10:37:22,410 INFO L242 Difference]: Finished difference. Result has 397 places, 404 transitions, 2889 flow [2022-07-12 10:37:22,411 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2676, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2889, PETRI_PLACES=397, PETRI_TRANSITIONS=404} [2022-07-12 10:37:22,411 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 196 predicate places. [2022-07-12 10:37:22,411 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 404 transitions, 2889 flow [2022-07-12 10:37:22,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:22,412 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:22,412 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] [2022-07-12 10:37:22,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 10:37:22,412 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)] === [2022-07-12 10:37:22,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:22,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1788438729, now seen corresponding path program 22 times [2022-07-12 10:37:22,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:22,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764261191] [2022-07-12 10:37:22,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:22,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:22,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:22,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:22,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764261191] [2022-07-12 10:37:22,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764261191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:22,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:22,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:22,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134202552] [2022-07-12 10:37:22,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:22,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:22,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:22,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:22,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:22,943 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:22,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 404 transitions, 2889 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:22,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:22,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:22,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:23,944 INFO L129 PetriNetUnfolder]: 1703/4352 cut-off events. [2022-07-12 10:37:23,944 INFO L130 PetriNetUnfolder]: For 48310/48332 co-relation queries the response was YES. [2022-07-12 10:37:23,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18345 conditions, 4352 events. 1703/4352 cut-off events. For 48310/48332 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 38232 event pairs, 704 based on Foata normal form. 14/4177 useless extension candidates. Maximal degree in co-relation 18247. Up to 2449 conditions per place. [2022-07-12 10:37:23,985 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 249 selfloop transitions, 62 changer transitions 5/451 dead transitions. [2022-07-12 10:37:23,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 451 transitions, 4094 flow [2022-07-12 10:37:23,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:37:23,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:37:23,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2767 transitions. [2022-07-12 10:37:23,988 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6893373193821625 [2022-07-12 10:37:23,988 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2767 transitions. [2022-07-12 10:37:23,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2767 transitions. [2022-07-12 10:37:23,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:23,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2767 transitions. [2022-07-12 10:37:23,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.72222222222223) internal successors, (2767), 18 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:23,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:23,995 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:23,995 INFO L186 Difference]: Start difference. First operand has 397 places, 404 transitions, 2889 flow. Second operand 18 states and 2767 transitions. [2022-07-12 10:37:23,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 451 transitions, 4094 flow [2022-07-12 10:37:24,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 451 transitions, 3902 flow, removed 33 selfloop flow, removed 15 redundant places. [2022-07-12 10:37:24,128 INFO L242 Difference]: Finished difference. Result has 401 places, 407 transitions, 2877 flow [2022-07-12 10:37:24,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2703, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2877, PETRI_PLACES=401, PETRI_TRANSITIONS=407} [2022-07-12 10:37:24,129 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 200 predicate places. [2022-07-12 10:37:24,129 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 407 transitions, 2877 flow [2022-07-12 10:37:24,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:24,130 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:24,130 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] [2022-07-12 10:37:24,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 10:37:24,130 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)] === [2022-07-12 10:37:24,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:24,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1231327249, now seen corresponding path program 23 times [2022-07-12 10:37:24,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:24,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356665730] [2022-07-12 10:37:24,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:24,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:24,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:24,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356665730] [2022-07-12 10:37:24,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356665730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:24,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:24,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:24,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686937848] [2022-07-12 10:37:24,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:24,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:24,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:24,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:24,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:24,785 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:24,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 407 transitions, 2877 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:24,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:24,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:24,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:25,999 INFO L129 PetriNetUnfolder]: 1748/4497 cut-off events. [2022-07-12 10:37:25,999 INFO L130 PetriNetUnfolder]: For 53013/53033 co-relation queries the response was YES. [2022-07-12 10:37:26,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19133 conditions, 4497 events. 1748/4497 cut-off events. For 53013/53033 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 40048 event pairs, 680 based on Foata normal form. 9/4317 useless extension candidates. Maximal degree in co-relation 19033. Up to 2392 conditions per place. [2022-07-12 10:37:26,052 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 257 selfloop transitions, 79 changer transitions 5/476 dead transitions. [2022-07-12 10:37:26,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 476 transitions, 4509 flow [2022-07-12 10:37:26,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:37:26,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:37:26,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2930 transitions. [2022-07-12 10:37:26,056 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.691527023837621 [2022-07-12 10:37:26,056 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2930 transitions. [2022-07-12 10:37:26,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2930 transitions. [2022-07-12 10:37:26,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:26,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2930 transitions. [2022-07-12 10:37:26,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.21052631578948) internal successors, (2930), 19 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:26,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:26,063 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:26,063 INFO L186 Difference]: Start difference. First operand has 401 places, 407 transitions, 2877 flow. Second operand 19 states and 2930 transitions. [2022-07-12 10:37:26,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 476 transitions, 4509 flow [2022-07-12 10:37:26,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 476 transitions, 4406 flow, removed 6 selfloop flow, removed 14 redundant places. [2022-07-12 10:37:26,219 INFO L242 Difference]: Finished difference. Result has 410 places, 418 transitions, 3278 flow [2022-07-12 10:37:26,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2780, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3278, PETRI_PLACES=410, PETRI_TRANSITIONS=418} [2022-07-12 10:37:26,220 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 209 predicate places. [2022-07-12 10:37:26,220 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 418 transitions, 3278 flow [2022-07-12 10:37:26,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:26,221 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:26,221 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] [2022-07-12 10:37:26,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 10:37:26,221 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)] === [2022-07-12 10:37:26,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:26,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1252106779, now seen corresponding path program 24 times [2022-07-12 10:37:26,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:26,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440031649] [2022-07-12 10:37:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:26,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:26,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:26,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440031649] [2022-07-12 10:37:26,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440031649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:26,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:26,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:26,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332591276] [2022-07-12 10:37:26,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:26,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:26,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:26,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:26,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:26,713 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:26,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 418 transitions, 3278 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:26,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:26,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:26,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:27,937 INFO L129 PetriNetUnfolder]: 1758/4530 cut-off events. [2022-07-12 10:37:27,938 INFO L130 PetriNetUnfolder]: For 61657/61677 co-relation queries the response was YES. [2022-07-12 10:37:27,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19885 conditions, 4530 events. 1758/4530 cut-off events. For 61657/61677 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 40340 event pairs, 754 based on Foata normal form. 9/4337 useless extension candidates. Maximal degree in co-relation 19780. Up to 2552 conditions per place. [2022-07-12 10:37:27,984 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 262 selfloop transitions, 67 changer transitions 5/469 dead transitions. [2022-07-12 10:37:27,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 469 transitions, 4715 flow [2022-07-12 10:37:27,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:37:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:37:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2766 transitions. [2022-07-12 10:37:27,987 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6890881913303438 [2022-07-12 10:37:27,987 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2766 transitions. [2022-07-12 10:37:27,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2766 transitions. [2022-07-12 10:37:27,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:27,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2766 transitions. [2022-07-12 10:37:27,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.66666666666666) internal successors, (2766), 18 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:27,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:27,993 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:27,993 INFO L186 Difference]: Start difference. First operand has 410 places, 418 transitions, 3278 flow. Second operand 18 states and 2766 transitions. [2022-07-12 10:37:27,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 469 transitions, 4715 flow [2022-07-12 10:37:28,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 469 transitions, 4420 flow, removed 99 selfloop flow, removed 13 redundant places. [2022-07-12 10:37:28,198 INFO L242 Difference]: Finished difference. Result has 416 places, 426 transitions, 3352 flow [2022-07-12 10:37:28,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2997, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3352, PETRI_PLACES=416, PETRI_TRANSITIONS=426} [2022-07-12 10:37:28,199 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 215 predicate places. [2022-07-12 10:37:28,199 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 426 transitions, 3352 flow [2022-07-12 10:37:28,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:28,199 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:28,199 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] [2022-07-12 10:37:28,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 10:37:28,200 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)] === [2022-07-12 10:37:28,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:28,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2144185257, now seen corresponding path program 25 times [2022-07-12 10:37:28,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:28,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201826862] [2022-07-12 10:37:28,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:28,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:28,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:28,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201826862] [2022-07-12 10:37:28,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201826862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:28,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:28,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:28,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539787922] [2022-07-12 10:37:28,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:28,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:28,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:28,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:28,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:28,749 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:28,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 426 transitions, 3352 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:28,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:28,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:28,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:30,133 INFO L129 PetriNetUnfolder]: 1798/4654 cut-off events. [2022-07-12 10:37:30,133 INFO L130 PetriNetUnfolder]: For 64439/64461 co-relation queries the response was YES. [2022-07-12 10:37:30,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20401 conditions, 4654 events. 1798/4654 cut-off events. For 64439/64461 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 42063 event pairs, 719 based on Foata normal form. 14/4466 useless extension candidates. Maximal degree in co-relation 20294. Up to 2529 conditions per place. [2022-07-12 10:37:30,191 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 277 selfloop transitions, 75 changer transitions 5/492 dead transitions. [2022-07-12 10:37:30,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 492 transitions, 4958 flow [2022-07-12 10:37:30,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:37:30,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:37:30,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2930 transitions. [2022-07-12 10:37:30,194 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.691527023837621 [2022-07-12 10:37:30,194 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2930 transitions. [2022-07-12 10:37:30,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2930 transitions. [2022-07-12 10:37:30,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:30,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2930 transitions. [2022-07-12 10:37:30,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.21052631578948) internal successors, (2930), 19 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:30,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:30,199 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:30,199 INFO L186 Difference]: Start difference. First operand has 416 places, 426 transitions, 3352 flow. Second operand 19 states and 2930 transitions. [2022-07-12 10:37:30,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 492 transitions, 4958 flow [2022-07-12 10:37:30,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 492 transitions, 4718 flow, removed 81 selfloop flow, removed 11 redundant places. [2022-07-12 10:37:30,349 INFO L242 Difference]: Finished difference. Result has 427 places, 434 transitions, 3514 flow [2022-07-12 10:37:30,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3128, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3514, PETRI_PLACES=427, PETRI_TRANSITIONS=434} [2022-07-12 10:37:30,349 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 226 predicate places. [2022-07-12 10:37:30,350 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 434 transitions, 3514 flow [2022-07-12 10:37:30,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:30,350 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:30,350 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] [2022-07-12 10:37:30,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 10:37:30,351 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)] === [2022-07-12 10:37:30,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:30,351 INFO L85 PathProgramCache]: Analyzing trace with hash -592376099, now seen corresponding path program 26 times [2022-07-12 10:37:30,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:30,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703140541] [2022-07-12 10:37:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:30,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:30,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:30,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703140541] [2022-07-12 10:37:30,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703140541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:30,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:30,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:30,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138751202] [2022-07-12 10:37:30,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:30,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:30,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:30,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:30,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:30,929 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:30,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 434 transitions, 3514 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:30,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:30,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:30,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:32,137 INFO L129 PetriNetUnfolder]: 1840/4677 cut-off events. [2022-07-12 10:37:32,137 INFO L130 PetriNetUnfolder]: For 73182/73190 co-relation queries the response was YES. [2022-07-12 10:37:32,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21528 conditions, 4677 events. 1840/4677 cut-off events. For 73182/73190 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 41594 event pairs, 982 based on Foata normal form. 1/4479 useless extension candidates. Maximal degree in co-relation 21416. Up to 2636 conditions per place. [2022-07-12 10:37:32,194 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 283 selfloop transitions, 72 changer transitions 5/495 dead transitions. [2022-07-12 10:37:32,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 495 transitions, 5184 flow [2022-07-12 10:37:32,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:37:32,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:37:32,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2780 transitions. [2022-07-12 10:37:32,196 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6925759840558047 [2022-07-12 10:37:32,196 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2780 transitions. [2022-07-12 10:37:32,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2780 transitions. [2022-07-12 10:37:32,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:32,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2780 transitions. [2022-07-12 10:37:32,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.44444444444446) internal successors, (2780), 18 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:32,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:32,202 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:32,202 INFO L186 Difference]: Start difference. First operand has 427 places, 434 transitions, 3514 flow. Second operand 18 states and 2780 transitions. [2022-07-12 10:37:32,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 495 transitions, 5184 flow [2022-07-12 10:37:32,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 495 transitions, 4900 flow, removed 92 selfloop flow, removed 13 redundant places. [2022-07-12 10:37:32,406 INFO L242 Difference]: Finished difference. Result has 434 places, 440 transitions, 3655 flow [2022-07-12 10:37:32,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3236, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3655, PETRI_PLACES=434, PETRI_TRANSITIONS=440} [2022-07-12 10:37:32,407 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 233 predicate places. [2022-07-12 10:37:32,407 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 440 transitions, 3655 flow [2022-07-12 10:37:32,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:32,408 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:32,408 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] [2022-07-12 10:37:32,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 10:37:32,409 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)] === [2022-07-12 10:37:32,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:32,409 INFO L85 PathProgramCache]: Analyzing trace with hash -603329539, now seen corresponding path program 27 times [2022-07-12 10:37:32,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:32,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483526772] [2022-07-12 10:37:32,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:32,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:32,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:32,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483526772] [2022-07-12 10:37:32,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483526772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:32,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:32,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:32,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705278892] [2022-07-12 10:37:32,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:32,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:32,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:32,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:32,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:32,895 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:32,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 440 transitions, 3655 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:32,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:32,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:32,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:34,150 INFO L129 PetriNetUnfolder]: 1840/4766 cut-off events. [2022-07-12 10:37:34,150 INFO L130 PetriNetUnfolder]: For 75608/75630 co-relation queries the response was YES. [2022-07-12 10:37:34,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21637 conditions, 4766 events. 1840/4766 cut-off events. For 75608/75630 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 43252 event pairs, 769 based on Foata normal form. 14/4578 useless extension candidates. Maximal degree in co-relation 21521. Up to 2672 conditions per place. [2022-07-12 10:37:34,199 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 277 selfloop transitions, 74 changer transitions 5/491 dead transitions. [2022-07-12 10:37:34,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 491 transitions, 5052 flow [2022-07-12 10:37:34,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:37:34,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:37:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2770 transitions. [2022-07-12 10:37:34,201 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6900847035376183 [2022-07-12 10:37:34,201 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2770 transitions. [2022-07-12 10:37:34,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2770 transitions. [2022-07-12 10:37:34,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:34,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2770 transitions. [2022-07-12 10:37:34,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.88888888888889) internal successors, (2770), 18 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:34,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:34,207 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:34,207 INFO L186 Difference]: Start difference. First operand has 434 places, 440 transitions, 3655 flow. Second operand 18 states and 2770 transitions. [2022-07-12 10:37:34,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 491 transitions, 5052 flow [2022-07-12 10:37:34,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 491 transitions, 4749 flow, removed 103 selfloop flow, removed 13 redundant places. [2022-07-12 10:37:34,432 INFO L242 Difference]: Finished difference. Result has 440 places, 443 transitions, 3581 flow [2022-07-12 10:37:34,433 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3354, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3581, PETRI_PLACES=440, PETRI_TRANSITIONS=443} [2022-07-12 10:37:34,433 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 239 predicate places. [2022-07-12 10:37:34,433 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 443 transitions, 3581 flow [2022-07-12 10:37:34,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:34,434 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:34,434 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] [2022-07-12 10:37:34,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 10:37:34,434 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)] === [2022-07-12 10:37:34,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:34,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2044532839, now seen corresponding path program 28 times [2022-07-12 10:37:34,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:34,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964419441] [2022-07-12 10:37:34,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:34,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:34,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:34,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:34,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964419441] [2022-07-12 10:37:34,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964419441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:34,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:34,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:34,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254504375] [2022-07-12 10:37:34,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:34,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:34,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:34,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:34,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:34,906 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:34,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 443 transitions, 3581 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:34,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:34,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:34,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:36,320 INFO L129 PetriNetUnfolder]: 1912/4952 cut-off events. [2022-07-12 10:37:36,321 INFO L130 PetriNetUnfolder]: For 79535/79557 co-relation queries the response was YES. [2022-07-12 10:37:36,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22633 conditions, 4952 events. 1912/4952 cut-off events. For 79535/79557 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 45567 event pairs, 780 based on Foata normal form. 14/4754 useless extension candidates. Maximal degree in co-relation 22514. Up to 2731 conditions per place. [2022-07-12 10:37:36,376 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 298 selfloop transitions, 74 changer transitions 5/512 dead transitions. [2022-07-12 10:37:36,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 512 transitions, 5385 flow [2022-07-12 10:37:36,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:37:36,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:37:36,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2930 transitions. [2022-07-12 10:37:36,378 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.691527023837621 [2022-07-12 10:37:36,378 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2930 transitions. [2022-07-12 10:37:36,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2930 transitions. [2022-07-12 10:37:36,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:36,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2930 transitions. [2022-07-12 10:37:36,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.21052631578948) internal successors, (2930), 19 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:36,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:36,385 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:36,385 INFO L186 Difference]: Start difference. First operand has 440 places, 443 transitions, 3581 flow. Second operand 19 states and 2930 transitions. [2022-07-12 10:37:36,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 512 transitions, 5385 flow [2022-07-12 10:37:36,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 512 transitions, 5147 flow, removed 45 selfloop flow, removed 15 redundant places. [2022-07-12 10:37:36,666 INFO L242 Difference]: Finished difference. Result has 448 places, 454 transitions, 3797 flow [2022-07-12 10:37:36,666 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3347, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3797, PETRI_PLACES=448, PETRI_TRANSITIONS=454} [2022-07-12 10:37:36,666 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 247 predicate places. [2022-07-12 10:37:36,666 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 454 transitions, 3797 flow [2022-07-12 10:37:36,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:36,667 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:36,667 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] [2022-07-12 10:37:36,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 10:37:36,667 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)] === [2022-07-12 10:37:36,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:36,668 INFO L85 PathProgramCache]: Analyzing trace with hash -341550069, now seen corresponding path program 29 times [2022-07-12 10:37:36,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:36,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392450206] [2022-07-12 10:37:36,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:36,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:37,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:37,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392450206] [2022-07-12 10:37:37,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392450206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:37,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:37,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:37,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146881870] [2022-07-12 10:37:37,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:37,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:37,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:37,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:37,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:37,153 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:37,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 454 transitions, 3797 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:37,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:37,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:37,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:38,619 INFO L129 PetriNetUnfolder]: 1962/5109 cut-off events. [2022-07-12 10:37:38,619 INFO L130 PetriNetUnfolder]: For 90851/90871 co-relation queries the response was YES. [2022-07-12 10:37:38,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23731 conditions, 5109 events. 1962/5109 cut-off events. For 90851/90871 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 47471 event pairs, 819 based on Foata normal form. 9/4903 useless extension candidates. Maximal degree in co-relation 23608. Up to 2805 conditions per place. [2022-07-12 10:37:38,701 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 296 selfloop transitions, 81 changer transitions 5/517 dead transitions. [2022-07-12 10:37:38,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 517 transitions, 5515 flow [2022-07-12 10:37:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:37:38,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:37:38,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2928 transitions. [2022-07-12 10:37:38,832 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6910549917394383 [2022-07-12 10:37:38,832 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2928 transitions. [2022-07-12 10:37:38,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2928 transitions. [2022-07-12 10:37:38,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:38,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2928 transitions. [2022-07-12 10:37:38,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.10526315789474) internal successors, (2928), 19 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:38,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:38,837 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:38,837 INFO L186 Difference]: Start difference. First operand has 448 places, 454 transitions, 3797 flow. Second operand 19 states and 2928 transitions. [2022-07-12 10:37:38,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 517 transitions, 5515 flow [2022-07-12 10:37:39,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 517 transitions, 5223 flow, removed 114 selfloop flow, removed 11 redundant places. [2022-07-12 10:37:39,119 INFO L242 Difference]: Finished difference. Result has 458 places, 463 transitions, 4004 flow [2022-07-12 10:37:39,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3527, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4004, PETRI_PLACES=458, PETRI_TRANSITIONS=463} [2022-07-12 10:37:39,119 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 257 predicate places. [2022-07-12 10:37:39,120 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 463 transitions, 4004 flow [2022-07-12 10:37:39,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:39,120 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:39,120 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] [2022-07-12 10:37:39,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 10:37:39,120 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)] === [2022-07-12 10:37:39,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:39,121 INFO L85 PathProgramCache]: Analyzing trace with hash -314007753, now seen corresponding path program 30 times [2022-07-12 10:37:39,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:39,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997462184] [2022-07-12 10:37:39,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:39,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:39,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:39,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997462184] [2022-07-12 10:37:39,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997462184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:39,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:39,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:39,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780259386] [2022-07-12 10:37:39,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:39,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:39,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:39,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:39,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:39,596 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:39,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 463 transitions, 4004 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:39,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:39,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:39,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:40,980 INFO L129 PetriNetUnfolder]: 2018/5211 cut-off events. [2022-07-12 10:37:40,980 INFO L130 PetriNetUnfolder]: For 96328/96350 co-relation queries the response was YES. [2022-07-12 10:37:41,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24561 conditions, 5211 events. 2018/5211 cut-off events. For 96328/96350 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 48578 event pairs, 847 based on Foata normal form. 14/5001 useless extension candidates. Maximal degree in co-relation 24434. Up to 2917 conditions per place. [2022-07-12 10:37:41,055 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 312 selfloop transitions, 78 changer transitions 5/530 dead transitions. [2022-07-12 10:37:41,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 530 transitions, 5884 flow [2022-07-12 10:37:41,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:37:41,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:37:41,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2930 transitions. [2022-07-12 10:37:41,057 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.691527023837621 [2022-07-12 10:37:41,057 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2930 transitions. [2022-07-12 10:37:41,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2930 transitions. [2022-07-12 10:37:41,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:41,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2930 transitions. [2022-07-12 10:37:41,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.21052631578948) internal successors, (2930), 19 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:41,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:41,062 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:41,062 INFO L186 Difference]: Start difference. First operand has 458 places, 463 transitions, 4004 flow. Second operand 19 states and 2930 transitions. [2022-07-12 10:37:41,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 530 transitions, 5884 flow [2022-07-12 10:37:41,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 530 transitions, 5531 flow, removed 122 selfloop flow, removed 14 redundant places. [2022-07-12 10:37:41,462 INFO L242 Difference]: Finished difference. Result has 466 places, 475 transitions, 4193 flow [2022-07-12 10:37:41,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3654, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4193, PETRI_PLACES=466, PETRI_TRANSITIONS=475} [2022-07-12 10:37:41,463 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 265 predicate places. [2022-07-12 10:37:41,463 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 475 transitions, 4193 flow [2022-07-12 10:37:41,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:41,463 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:41,463 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] [2022-07-12 10:37:41,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 10:37:41,463 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)] === [2022-07-12 10:37:41,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:41,464 INFO L85 PathProgramCache]: Analyzing trace with hash 233927759, now seen corresponding path program 31 times [2022-07-12 10:37:41,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:41,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785202206] [2022-07-12 10:37:41,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:41,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:41,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:41,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785202206] [2022-07-12 10:37:41,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785202206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:41,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:41,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:41,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112940442] [2022-07-12 10:37:41,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:41,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:41,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:41,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:41,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:41,935 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:41,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 475 transitions, 4193 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:41,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:41,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:41,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:43,489 INFO L129 PetriNetUnfolder]: 2069/5382 cut-off events. [2022-07-12 10:37:43,490 INFO L130 PetriNetUnfolder]: For 105668/105688 co-relation queries the response was YES. [2022-07-12 10:37:43,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25715 conditions, 5382 events. 2069/5382 cut-off events. For 105668/105688 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 50533 event pairs, 897 based on Foata normal form. 9/5159 useless extension candidates. Maximal degree in co-relation 25583. Up to 3011 conditions per place. [2022-07-12 10:37:43,570 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 326 selfloop transitions, 76 changer transitions 5/542 dead transitions. [2022-07-12 10:37:43,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 542 transitions, 6207 flow [2022-07-12 10:37:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:37:43,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:37:43,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2934 transitions. [2022-07-12 10:37:43,572 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6924710880339863 [2022-07-12 10:37:43,572 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2934 transitions. [2022-07-12 10:37:43,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2934 transitions. [2022-07-12 10:37:43,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:43,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2934 transitions. [2022-07-12 10:37:43,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.42105263157896) internal successors, (2934), 19 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:43,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:43,576 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:43,576 INFO L186 Difference]: Start difference. First operand has 466 places, 475 transitions, 4193 flow. Second operand 19 states and 2934 transitions. [2022-07-12 10:37:43,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 542 transitions, 6207 flow [2022-07-12 10:37:43,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 542 transitions, 5837 flow, removed 134 selfloop flow, removed 13 redundant places. [2022-07-12 10:37:43,896 INFO L242 Difference]: Finished difference. Result has 474 places, 482 transitions, 4308 flow [2022-07-12 10:37:43,896 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3830, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4308, PETRI_PLACES=474, PETRI_TRANSITIONS=482} [2022-07-12 10:37:43,897 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 273 predicate places. [2022-07-12 10:37:43,897 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 482 transitions, 4308 flow [2022-07-12 10:37:43,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:43,897 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:43,898 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] [2022-07-12 10:37:43,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 10:37:43,898 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:37:43,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:43,898 INFO L85 PathProgramCache]: Analyzing trace with hash 103006263, now seen corresponding path program 32 times [2022-07-12 10:37:43,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:43,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336349595] [2022-07-12 10:37:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:43,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:44,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:44,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336349595] [2022-07-12 10:37:44,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336349595] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:44,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:44,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:44,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105536880] [2022-07-12 10:37:44,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:44,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:44,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:44,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:44,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:44,496 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:44,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 482 transitions, 4308 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:44,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:44,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:44,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:45,993 INFO L129 PetriNetUnfolder]: 2120/5523 cut-off events. [2022-07-12 10:37:45,993 INFO L130 PetriNetUnfolder]: For 116443/116465 co-relation queries the response was YES. [2022-07-12 10:37:46,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26805 conditions, 5523 events. 2120/5523 cut-off events. For 116443/116465 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 52260 event pairs, 920 based on Foata normal form. 14/5298 useless extension candidates. Maximal degree in co-relation 26669. Up to 3087 conditions per place. [2022-07-12 10:37:46,061 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 331 selfloop transitions, 74 changer transitions 5/545 dead transitions. [2022-07-12 10:37:46,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 545 transitions, 6289 flow [2022-07-12 10:37:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:37:46,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:37:46,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2782 transitions. [2022-07-12 10:37:46,063 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.693074240159442 [2022-07-12 10:37:46,063 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2782 transitions. [2022-07-12 10:37:46,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2782 transitions. [2022-07-12 10:37:46,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:46,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2782 transitions. [2022-07-12 10:37:46,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.55555555555554) internal successors, (2782), 18 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:46,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:46,067 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:46,067 INFO L186 Difference]: Start difference. First operand has 474 places, 482 transitions, 4308 flow. Second operand 18 states and 2782 transitions. [2022-07-12 10:37:46,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 545 transitions, 6289 flow [2022-07-12 10:37:46,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 545 transitions, 5950 flow, removed 116 selfloop flow, removed 14 redundant places. [2022-07-12 10:37:46,498 INFO L242 Difference]: Finished difference. Result has 480 places, 489 transitions, 4468 flow [2022-07-12 10:37:46,498 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3976, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4468, PETRI_PLACES=480, PETRI_TRANSITIONS=489} [2022-07-12 10:37:46,498 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 279 predicate places. [2022-07-12 10:37:46,498 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 489 transitions, 4468 flow [2022-07-12 10:37:46,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:46,499 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:46,499 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] [2022-07-12 10:37:46,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-12 10:37:46,499 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:37:46,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:46,499 INFO L85 PathProgramCache]: Analyzing trace with hash 704162813, now seen corresponding path program 33 times [2022-07-12 10:37:46,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:46,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562343816] [2022-07-12 10:37:46,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:46,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:47,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:47,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:47,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562343816] [2022-07-12 10:37:47,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562343816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:47,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:47,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:47,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407915999] [2022-07-12 10:37:47,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:47,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:47,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:47,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:47,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:47,069 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:47,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 489 transitions, 4468 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:47,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:47,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:47,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:48,623 INFO L129 PetriNetUnfolder]: 2147/5475 cut-off events. [2022-07-12 10:37:48,623 INFO L130 PetriNetUnfolder]: For 119191/119201 co-relation queries the response was YES. [2022-07-12 10:37:48,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27247 conditions, 5475 events. 2147/5475 cut-off events. For 119191/119201 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 51143 event pairs, 1130 based on Foata normal form. 2/5248 useless extension candidates. Maximal degree in co-relation 27107. Up to 3159 conditions per place. [2022-07-12 10:37:48,701 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 331 selfloop transitions, 79 changer transitions 5/550 dead transitions. [2022-07-12 10:37:48,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 550 transitions, 6368 flow [2022-07-12 10:37:48,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:37:48,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:37:48,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2776 transitions. [2022-07-12 10:37:48,703 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6915794718485302 [2022-07-12 10:37:48,703 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2776 transitions. [2022-07-12 10:37:48,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2776 transitions. [2022-07-12 10:37:48,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:48,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2776 transitions. [2022-07-12 10:37:48,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.22222222222223) internal successors, (2776), 18 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:48,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:48,709 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:48,709 INFO L186 Difference]: Start difference. First operand has 480 places, 489 transitions, 4468 flow. Second operand 18 states and 2776 transitions. [2022-07-12 10:37:48,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 550 transitions, 6368 flow [2022-07-12 10:37:49,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 550 transitions, 6064 flow, removed 119 selfloop flow, removed 12 redundant places. [2022-07-12 10:37:49,021 INFO L242 Difference]: Finished difference. Result has 488 places, 499 transitions, 4595 flow [2022-07-12 10:37:49,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=4166, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4595, PETRI_PLACES=488, PETRI_TRANSITIONS=499} [2022-07-12 10:37:49,022 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 287 predicate places. [2022-07-12 10:37:49,022 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 499 transitions, 4595 flow [2022-07-12 10:37:49,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:49,023 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:49,023 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] [2022-07-12 10:37:49,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-12 10:37:49,023 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:37:49,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:49,024 INFO L85 PathProgramCache]: Analyzing trace with hash -952238525, now seen corresponding path program 34 times [2022-07-12 10:37:49,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:49,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608602835] [2022-07-12 10:37:49,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:49,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:49,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:49,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608602835] [2022-07-12 10:37:49,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608602835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:49,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:49,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:49,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998254298] [2022-07-12 10:37:49,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:49,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:49,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:49,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:49,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:49,599 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:49,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 499 transitions, 4595 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:49,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:49,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:49,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:51,196 INFO L129 PetriNetUnfolder]: 2153/5598 cut-off events. [2022-07-12 10:37:51,196 INFO L130 PetriNetUnfolder]: For 111592/111612 co-relation queries the response was YES. [2022-07-12 10:37:51,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27175 conditions, 5598 events. 2153/5598 cut-off events. For 111592/111612 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 53040 event pairs, 952 based on Foata normal form. 9/5361 useless extension candidates. Maximal degree in co-relation 27031. Up to 3158 conditions per place. [2022-07-12 10:37:51,273 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 333 selfloop transitions, 82 changer transitions 5/555 dead transitions. [2022-07-12 10:37:51,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 555 transitions, 6429 flow [2022-07-12 10:37:51,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:37:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:37:51,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2775 transitions. [2022-07-12 10:37:51,275 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6913303437967115 [2022-07-12 10:37:51,275 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2775 transitions. [2022-07-12 10:37:51,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2775 transitions. [2022-07-12 10:37:51,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:51,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2775 transitions. [2022-07-12 10:37:51,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.16666666666666) internal successors, (2775), 18 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:51,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:51,278 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:51,278 INFO L186 Difference]: Start difference. First operand has 488 places, 499 transitions, 4595 flow. Second operand 18 states and 2775 transitions. [2022-07-12 10:37:51,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 555 transitions, 6429 flow [2022-07-12 10:37:51,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 555 transitions, 6218 flow, removed 50 selfloop flow, removed 12 redundant places. [2022-07-12 10:37:51,592 INFO L242 Difference]: Finished difference. Result has 496 places, 507 transitions, 4828 flow [2022-07-12 10:37:51,593 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=4391, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4828, PETRI_PLACES=496, PETRI_TRANSITIONS=507} [2022-07-12 10:37:51,593 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 295 predicate places. [2022-07-12 10:37:51,593 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 507 transitions, 4828 flow [2022-07-12 10:37:51,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:51,594 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:51,594 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] [2022-07-12 10:37:51,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-12 10:37:51,594 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:37:51,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:51,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1860644681, now seen corresponding path program 35 times [2022-07-12 10:37:51,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:51,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033629133] [2022-07-12 10:37:51,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:51,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:52,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:52,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033629133] [2022-07-12 10:37:52,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033629133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:52,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:52,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:52,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842490002] [2022-07-12 10:37:52,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:52,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:52,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:52,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:52,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:52,283 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:52,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 507 transitions, 4828 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:52,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:52,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:52,285 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:53,898 INFO L129 PetriNetUnfolder]: 2153/5572 cut-off events. [2022-07-12 10:37:53,898 INFO L130 PetriNetUnfolder]: For 115074/115096 co-relation queries the response was YES. [2022-07-12 10:37:53,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27205 conditions, 5572 events. 2153/5572 cut-off events. For 115074/115096 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 52680 event pairs, 937 based on Foata normal form. 14/5347 useless extension candidates. Maximal degree in co-relation 27058. Up to 3144 conditions per place. [2022-07-12 10:37:53,974 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 336 selfloop transitions, 79 changer transitions 5/555 dead transitions. [2022-07-12 10:37:53,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 555 transitions, 6487 flow [2022-07-12 10:37:53,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:37:53,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:37:53,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2769 transitions. [2022-07-12 10:37:53,976 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6898355754857997 [2022-07-12 10:37:53,976 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2769 transitions. [2022-07-12 10:37:53,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2769 transitions. [2022-07-12 10:37:53,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:53,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2769 transitions. [2022-07-12 10:37:53,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.83333333333334) internal successors, (2769), 18 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:53,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:53,980 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:53,980 INFO L186 Difference]: Start difference. First operand has 496 places, 507 transitions, 4828 flow. Second operand 18 states and 2769 transitions. [2022-07-12 10:37:53,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 555 transitions, 6487 flow [2022-07-12 10:37:54,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 555 transitions, 6180 flow, removed 93 selfloop flow, removed 14 redundant places. [2022-07-12 10:37:54,358 INFO L242 Difference]: Finished difference. Result has 501 places, 510 transitions, 4776 flow [2022-07-12 10:37:54,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=4523, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4776, PETRI_PLACES=501, PETRI_TRANSITIONS=510} [2022-07-12 10:37:54,359 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 300 predicate places. [2022-07-12 10:37:54,359 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 510 transitions, 4776 flow [2022-07-12 10:37:54,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:54,359 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:54,359 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] [2022-07-12 10:37:54,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-12 10:37:54,360 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:37:54,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:54,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1919500943, now seen corresponding path program 36 times [2022-07-12 10:37:54,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:54,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080742941] [2022-07-12 10:37:54,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:54,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:54,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:54,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080742941] [2022-07-12 10:37:54,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080742941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:54,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:54,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:54,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491250365] [2022-07-12 10:37:54,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:54,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:54,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:54,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:54,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:54,792 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:54,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 510 transitions, 4776 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:54,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:54,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:54,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:56,521 INFO L129 PetriNetUnfolder]: 2159/5514 cut-off events. [2022-07-12 10:37:56,521 INFO L130 PetriNetUnfolder]: For 113585/113593 co-relation queries the response was YES. [2022-07-12 10:37:56,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27089 conditions, 5514 events. 2159/5514 cut-off events. For 113585/113593 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 51512 event pairs, 1160 based on Foata normal form. 1/5283 useless extension candidates. Maximal degree in co-relation 26941. Up to 3168 conditions per place. [2022-07-12 10:37:56,590 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 342 selfloop transitions, 79 changer transitions 5/561 dead transitions. [2022-07-12 10:37:56,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 561 transitions, 6501 flow [2022-07-12 10:37:56,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:37:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:37:56,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2773 transitions. [2022-07-12 10:37:56,592 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6908320876930742 [2022-07-12 10:37:56,592 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2773 transitions. [2022-07-12 10:37:56,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2773 transitions. [2022-07-12 10:37:56,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:56,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2773 transitions. [2022-07-12 10:37:56,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.05555555555554) internal successors, (2773), 18 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:56,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:56,597 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:56,597 INFO L186 Difference]: Start difference. First operand has 501 places, 510 transitions, 4776 flow. Second operand 18 states and 2773 transitions. [2022-07-12 10:37:56,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 561 transitions, 6501 flow [2022-07-12 10:37:56,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 561 transitions, 6245 flow, removed 50 selfloop flow, removed 15 redundant places. [2022-07-12 10:37:56,964 INFO L242 Difference]: Finished difference. Result has 505 places, 514 transitions, 4809 flow [2022-07-12 10:37:56,964 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=4524, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4809, PETRI_PLACES=505, PETRI_TRANSITIONS=514} [2022-07-12 10:37:56,965 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 304 predicate places. [2022-07-12 10:37:56,965 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 514 transitions, 4809 flow [2022-07-12 10:37:56,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:56,965 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:56,966 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] [2022-07-12 10:37:56,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-12 10:37:56,966 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:37:56,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:56,966 INFO L85 PathProgramCache]: Analyzing trace with hash 349381655, now seen corresponding path program 37 times [2022-07-12 10:37:56,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:56,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122260442] [2022-07-12 10:37:56,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:56,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:37:57,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:37:57,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:37:57,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122260442] [2022-07-12 10:37:57,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122260442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:37:57,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:37:57,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:37:57,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177783459] [2022-07-12 10:37:57,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:37:57,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:37:57,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:37:57,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:37:57,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:37:57,430 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:37:57,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 514 transitions, 4809 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:57,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:37:57,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:37:57,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:37:59,236 INFO L129 PetriNetUnfolder]: 2159/5602 cut-off events. [2022-07-12 10:37:59,237 INFO L130 PetriNetUnfolder]: For 113528/113550 co-relation queries the response was YES. [2022-07-12 10:37:59,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27116 conditions, 5602 events. 2159/5602 cut-off events. For 113528/113550 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 53219 event pairs, 931 based on Foata normal form. 14/5379 useless extension candidates. Maximal degree in co-relation 26966. Up to 3142 conditions per place. [2022-07-12 10:37:59,305 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 341 selfloop transitions, 83 changer transitions 5/564 dead transitions. [2022-07-12 10:37:59,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 564 transitions, 6514 flow [2022-07-12 10:37:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:37:59,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:37:59,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2771 transitions. [2022-07-12 10:37:59,307 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.690333831589437 [2022-07-12 10:37:59,307 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2771 transitions. [2022-07-12 10:37:59,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2771 transitions. [2022-07-12 10:37:59,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:37:59,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2771 transitions. [2022-07-12 10:37:59,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.94444444444446) internal successors, (2771), 18 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:59,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:59,313 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:59,313 INFO L186 Difference]: Start difference. First operand has 505 places, 514 transitions, 4809 flow. Second operand 18 states and 2771 transitions. [2022-07-12 10:37:59,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 564 transitions, 6514 flow [2022-07-12 10:37:59,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 564 transitions, 6252 flow, removed 54 selfloop flow, removed 15 redundant places. [2022-07-12 10:37:59,732 INFO L242 Difference]: Finished difference. Result has 509 places, 517 transitions, 4813 flow [2022-07-12 10:37:59,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=4549, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4813, PETRI_PLACES=509, PETRI_TRANSITIONS=517} [2022-07-12 10:37:59,733 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 308 predicate places. [2022-07-12 10:37:59,733 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 517 transitions, 4813 flow [2022-07-12 10:37:59,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:37:59,734 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:37:59,734 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] [2022-07-12 10:37:59,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-12 10:37:59,734 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:37:59,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:37:59,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1893484721, now seen corresponding path program 38 times [2022-07-12 10:37:59,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:37:59,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588410588] [2022-07-12 10:37:59,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:37:59,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:37:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:38:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:38:00,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:38:00,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588410588] [2022-07-12 10:38:00,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588410588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:38:00,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:38:00,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:38:00,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100344207] [2022-07-12 10:38:00,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:38:00,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:38:00,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:38:00,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:38:00,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:38:00,151 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:38:00,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 517 transitions, 4813 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:38:00,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:38:00,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:38:00,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:38:01,763 INFO L129 PetriNetUnfolder]: 2159/5493 cut-off events. [2022-07-12 10:38:01,764 INFO L130 PetriNetUnfolder]: For 111793/111803 co-relation queries the response was YES. [2022-07-12 10:38:01,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26886 conditions, 5493 events. 2159/5493 cut-off events. For 111793/111803 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 51418 event pairs, 1142 based on Foata normal form. 2/5264 useless extension candidates. Maximal degree in co-relation 26734. Up to 3160 conditions per place. [2022-07-12 10:38:01,830 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 346 selfloop transitions, 78 changer transitions 5/564 dead transitions. [2022-07-12 10:38:01,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 564 transitions, 6484 flow [2022-07-12 10:38:01,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:38:01,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:38:01,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2768 transitions. [2022-07-12 10:38:01,832 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6895864474339811 [2022-07-12 10:38:01,832 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2768 transitions. [2022-07-12 10:38:01,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2768 transitions. [2022-07-12 10:38:01,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:38:01,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2768 transitions. [2022-07-12 10:38:01,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.77777777777777) internal successors, (2768), 18 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:38:01,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:38:01,836 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:38:01,836 INFO L186 Difference]: Start difference. First operand has 509 places, 517 transitions, 4813 flow. Second operand 18 states and 2768 transitions. [2022-07-12 10:38:01,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 564 transitions, 6484 flow [2022-07-12 10:38:02,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 564 transitions, 6244 flow, removed 38 selfloop flow, removed 15 redundant places. [2022-07-12 10:38:02,225 INFO L242 Difference]: Finished difference. Result has 513 places, 520 transitions, 4797 flow [2022-07-12 10:38:02,225 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=4577, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4797, PETRI_PLACES=513, PETRI_TRANSITIONS=520} [2022-07-12 10:38:02,226 INFO L279 CegarLoopForPetriNet]: 201 programPoint places, 312 predicate places. [2022-07-12 10:38:02,226 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 520 transitions, 4797 flow [2022-07-12 10:38:02,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:38:02,226 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:38:02,226 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] [2022-07-12 10:38:02,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-12 10:38:02,226 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:38:02,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:38:02,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1144625415, now seen corresponding path program 39 times [2022-07-12 10:38:02,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:38:02,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798685228] [2022-07-12 10:38:02,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:38:02,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:38:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:38:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:38:02,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:38:02,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798685228] [2022-07-12 10:38:02,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798685228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:38:02,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:38:02,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:38:02,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213408502] [2022-07-12 10:38:02,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:38:02,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:38:02,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:38:02,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:38:02,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:38:02,696 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-07-12 10:38:02,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 520 transitions, 4797 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:38:02,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:38:02,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-07-12 10:38:02,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand