./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-node-symm.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 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:59:07,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:59:07,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:59:07,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:59:07,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:59:07,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:59:07,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:59:07,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:59:07,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:59:07,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:59:07,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:59:07,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:59:07,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:59:07,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:59:07,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:59:07,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:59:07,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:59:07,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:59:07,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:59:07,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:59:07,846 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:59:07,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:59:07,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:59:07,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:59:07,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:59:07,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:59:07,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:59:07,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:59:07,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:59:07,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:59:07,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:59:07,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:59:07,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:59:07,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:59:07,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:59:07,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:59:07,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:59:07,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:59:07,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:59:07,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:59:07,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:59:07,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:59:07,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:59:07,893 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:59:07,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:59:07,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:59:07,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:59:07,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:59:07,895 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:59:07,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:59:07,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:59:07,896 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:59:07,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:59:07,896 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:59:07,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:59:07,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:59:07,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:59:07,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:59:07,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:59:07,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:59:07,898 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:59:07,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:59:07,898 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:59:07,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:59:07,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:59:07,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:59:07,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:59:07,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:59:07,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:59:07,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:59:07,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:59:07,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:59:07,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:59:07,900 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:59:07,900 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:59:07,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:59:07,900 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f [2022-07-21 08:59:08,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:59:08,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:59:08,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:59:08,197 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:59:08,207 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:59:08,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-07-21 08:59:08,258 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/820504866/ea976bdee8f6421f8a51aa15b49647ac/FLAGe755c0c54 [2022-07-21 08:59:08,670 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:59:08,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-07-21 08:59:08,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/820504866/ea976bdee8f6421f8a51aa15b49647ac/FLAGe755c0c54 [2022-07-21 08:59:08,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/820504866/ea976bdee8f6421f8a51aa15b49647ac [2022-07-21 08:59:08,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:59:08,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:59:08,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:59:08,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:59:08,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:59:08,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:59:08" (1/1) ... [2022-07-21 08:59:08,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@83861f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:08, skipping insertion in model container [2022-07-21 08:59:08,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:59:08" (1/1) ... [2022-07-21 08:59:08,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:59:08,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:59:08,894 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-07-21 08:59:08,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:59:08,920 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:59:08,954 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-07-21 08:59:08,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:59:08,968 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:59:08,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:08 WrapperNode [2022-07-21 08:59:08,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:59:08,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:59:08,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:59:08,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:59:08,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:08" (1/1) ... [2022-07-21 08:59:08,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:08" (1/1) ... [2022-07-21 08:59:09,015 INFO L137 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 314 [2022-07-21 08:59:09,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:59:09,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:59:09,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:59:09,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:59:09,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:08" (1/1) ... [2022-07-21 08:59:09,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:08" (1/1) ... [2022-07-21 08:59:09,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:08" (1/1) ... [2022-07-21 08:59:09,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:08" (1/1) ... [2022-07-21 08:59:09,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:08" (1/1) ... [2022-07-21 08:59:09,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:08" (1/1) ... [2022-07-21 08:59:09,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:08" (1/1) ... [2022-07-21 08:59:09,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:59:09,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:59:09,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:59:09,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:59:09,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:08" (1/1) ... [2022-07-21 08:59:09,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:59:09,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:59:09,089 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) [2022-07-21 08:59:09,110 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 [2022-07-21 08:59:09,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:59:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:59:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:59:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:59:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 08:59:09,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 08:59:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 08:59:09,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 08:59:09,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:59:09,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 08:59:09,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:59:09,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:59:09,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:59:09,146 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:59:09,218 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:59:09,219 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:59:09,544 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:59:09,560 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:59:09,560 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-21 08:59:09,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:59:09 BoogieIcfgContainer [2022-07-21 08:59:09,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:59:09,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:59:09,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:59:09,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:59:09,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:59:08" (1/3) ... [2022-07-21 08:59:09,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e379fb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:59:09, skipping insertion in model container [2022-07-21 08:59:09,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:08" (2/3) ... [2022-07-21 08:59:09,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e379fb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:59:09, skipping insertion in model container [2022-07-21 08:59:09,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:59:09" (3/3) ... [2022-07-21 08:59:09,567 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2022-07-21 08:59:09,571 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:59:09,577 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:59:09,577 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:59:09,577 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:59:09,643 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-21 08:59:09,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 385 places, 414 transitions, 844 flow [2022-07-21 08:59:09,822 INFO L129 PetriNetUnfolder]: 36/412 cut-off events. [2022-07-21 08:59:09,822 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:59:09,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 412 events. 36/412 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 475 event pairs, 0 based on Foata normal form. 0/375 useless extension candidates. Maximal degree in co-relation 303. Up to 2 conditions per place. [2022-07-21 08:59:09,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 385 places, 414 transitions, 844 flow [2022-07-21 08:59:09,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 403 transitions, 818 flow [2022-07-21 08:59:09,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:59:09,852 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@3d3269b9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4057790a [2022-07-21 08:59:09,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-21 08:59:09,902 INFO L129 PetriNetUnfolder]: 36/402 cut-off events. [2022-07-21 08:59:09,903 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:59:09,903 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:09,904 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:09,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:09,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:09,909 INFO L85 PathProgramCache]: Analyzing trace with hash -339291306, now seen corresponding path program 1 times [2022-07-21 08:59:09,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:09,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413652718] [2022-07-21 08:59:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:09,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:10,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:10,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413652718] [2022-07-21 08:59:10,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413652718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:10,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:10,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:59:10,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446580746] [2022-07-21 08:59:10,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:10,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 08:59:10,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:10,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 08:59:10,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:59:10,256 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 414 [2022-07-21 08:59:10,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 403 transitions, 818 flow. Second operand has 2 states, 2 states have (on average 391.5) internal successors, (783), 2 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:10,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 414 [2022-07-21 08:59:10,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:10,327 INFO L129 PetriNetUnfolder]: 16/383 cut-off events. [2022-07-21 08:59:10,327 INFO L130 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-07-21 08:59:10,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 383 events. 16/383 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 463 event pairs, 0 based on Foata normal form. 21/372 useless extension candidates. Maximal degree in co-relation 287. Up to 5 conditions per place. [2022-07-21 08:59:10,331 INFO L132 encePairwiseOnDemand]: 394/414 looper letters, 4 selfloop transitions, 0 changer transitions 12/383 dead transitions. [2022-07-21 08:59:10,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 383 transitions, 786 flow [2022-07-21 08:59:10,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 08:59:10,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-21 08:59:10,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 802 transitions. [2022-07-21 08:59:10,346 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9685990338164251 [2022-07-21 08:59:10,347 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 802 transitions. [2022-07-21 08:59:10,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 802 transitions. [2022-07-21 08:59:10,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:10,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 802 transitions. [2022-07-21 08:59:10,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 401.0) internal successors, (802), 2 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,362 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,364 INFO L186 Difference]: Start difference. First operand has 374 places, 403 transitions, 818 flow. Second operand 2 states and 802 transitions. [2022-07-21 08:59:10,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 383 transitions, 786 flow [2022-07-21 08:59:10,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 383 transitions, 778 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 08:59:10,376 INFO L242 Difference]: Finished difference. Result has 371 places, 371 transitions, 746 flow [2022-07-21 08:59:10,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=746, PETRI_PLACES=371, PETRI_TRANSITIONS=371} [2022-07-21 08:59:10,380 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, -3 predicate places. [2022-07-21 08:59:10,381 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 371 transitions, 746 flow [2022-07-21 08:59:10,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 391.5) internal successors, (783), 2 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,382 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:10,382 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:10,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:59:10,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:10,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:10,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2041905993, now seen corresponding path program 1 times [2022-07-21 08:59:10,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:10,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176743413] [2022-07-21 08:59:10,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:10,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:10,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:10,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:10,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176743413] [2022-07-21 08:59:10,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176743413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:10,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:10,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:59:10,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735822166] [2022-07-21 08:59:10,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:10,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:59:10,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:10,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:59:10,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:59:10,559 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 414 [2022-07-21 08:59:10,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 371 transitions, 746 flow. Second operand has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:10,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 414 [2022-07-21 08:59:10,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:10,652 INFO L129 PetriNetUnfolder]: 31/508 cut-off events. [2022-07-21 08:59:10,653 INFO L130 PetriNetUnfolder]: For 2/9 co-relation queries the response was YES. [2022-07-21 08:59:10,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 508 events. 31/508 cut-off events. For 2/9 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1309 event pairs, 5 based on Foata normal form. 1/476 useless extension candidates. Maximal degree in co-relation 546. Up to 22 conditions per place. [2022-07-21 08:59:10,655 INFO L132 encePairwiseOnDemand]: 410/414 looper letters, 11 selfloop transitions, 3 changer transitions 0/374 dead transitions. [2022-07-21 08:59:10,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 374 transitions, 781 flow [2022-07-21 08:59:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:59:10,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:59:10,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1161 transitions. [2022-07-21 08:59:10,658 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9347826086956522 [2022-07-21 08:59:10,658 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1161 transitions. [2022-07-21 08:59:10,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1161 transitions. [2022-07-21 08:59:10,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:10,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1161 transitions. [2022-07-21 08:59:10,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,663 INFO L186 Difference]: Start difference. First operand has 371 places, 371 transitions, 746 flow. Second operand 3 states and 1161 transitions. [2022-07-21 08:59:10,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 374 transitions, 781 flow [2022-07-21 08:59:10,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 374 transitions, 781 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:59:10,670 INFO L242 Difference]: Finished difference. Result has 363 places, 373 transitions, 768 flow [2022-07-21 08:59:10,670 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=768, PETRI_PLACES=363, PETRI_TRANSITIONS=373} [2022-07-21 08:59:10,671 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, -11 predicate places. [2022-07-21 08:59:10,671 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 373 transitions, 768 flow [2022-07-21 08:59:10,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,672 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:10,672 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:10,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:59:10,673 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:10,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:10,673 INFO L85 PathProgramCache]: Analyzing trace with hash -520802165, now seen corresponding path program 1 times [2022-07-21 08:59:10,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:10,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263474751] [2022-07-21 08:59:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:10,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:10,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:10,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:10,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263474751] [2022-07-21 08:59:10,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263474751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:10,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:10,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:59:10,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761344419] [2022-07-21 08:59:10,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:10,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:59:10,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:10,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:59:10,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:59:10,782 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 414 [2022-07-21 08:59:10,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 373 transitions, 768 flow. Second operand has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:10,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 414 [2022-07-21 08:59:10,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:10,841 INFO L129 PetriNetUnfolder]: 27/448 cut-off events. [2022-07-21 08:59:10,841 INFO L130 PetriNetUnfolder]: For 12/13 co-relation queries the response was YES. [2022-07-21 08:59:10,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 448 events. 27/448 cut-off events. For 12/13 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 795 event pairs, 5 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 488. Up to 22 conditions per place. [2022-07-21 08:59:10,844 INFO L132 encePairwiseOnDemand]: 410/414 looper letters, 11 selfloop transitions, 3 changer transitions 0/376 dead transitions. [2022-07-21 08:59:10,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 376 transitions, 803 flow [2022-07-21 08:59:10,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:59:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:59:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1161 transitions. [2022-07-21 08:59:10,846 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9347826086956522 [2022-07-21 08:59:10,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1161 transitions. [2022-07-21 08:59:10,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1161 transitions. [2022-07-21 08:59:10,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:10,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1161 transitions. [2022-07-21 08:59:10,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,852 INFO L186 Difference]: Start difference. First operand has 363 places, 373 transitions, 768 flow. Second operand 3 states and 1161 transitions. [2022-07-21 08:59:10,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 376 transitions, 803 flow [2022-07-21 08:59:10,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 376 transitions, 797 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:10,857 INFO L242 Difference]: Finished difference. Result has 365 places, 375 transitions, 784 flow [2022-07-21 08:59:10,858 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=784, PETRI_PLACES=365, PETRI_TRANSITIONS=375} [2022-07-21 08:59:10,860 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, -9 predicate places. [2022-07-21 08:59:10,860 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 375 transitions, 784 flow [2022-07-21 08:59:10,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:10,861 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:10,861 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:10,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:59:10,861 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:10,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:10,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1693829105, now seen corresponding path program 1 times [2022-07-21 08:59:10,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:10,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251237039] [2022-07-21 08:59:10,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:10,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:11,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:11,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:11,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251237039] [2022-07-21 08:59:11,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251237039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:11,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:11,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:11,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906779512] [2022-07-21 08:59:11,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:11,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:11,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:11,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:11,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:11,021 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-21 08:59:11,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 375 transitions, 784 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:11,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:11,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-21 08:59:11,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:12,674 INFO L129 PetriNetUnfolder]: 1682/8987 cut-off events. [2022-07-21 08:59:12,675 INFO L130 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2022-07-21 08:59:12,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12174 conditions, 8987 events. 1682/8987 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 102322 event pairs, 501 based on Foata normal form. 0/8427 useless extension candidates. Maximal degree in co-relation 12168. Up to 1102 conditions per place. [2022-07-21 08:59:12,721 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 242 selfloop transitions, 35 changer transitions 0/587 dead transitions. [2022-07-21 08:59:12,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 587 transitions, 1786 flow [2022-07-21 08:59:12,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 08:59:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-21 08:59:12,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 7823 transitions. [2022-07-21 08:59:12,753 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8215710985087167 [2022-07-21 08:59:12,753 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 7823 transitions. [2022-07-21 08:59:12,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 7823 transitions. [2022-07-21 08:59:12,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:12,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 7823 transitions. [2022-07-21 08:59:12,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 340.1304347826087) internal successors, (7823), 23 states have internal predecessors, (7823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:12,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:12,784 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:12,784 INFO L186 Difference]: Start difference. First operand has 365 places, 375 transitions, 784 flow. Second operand 23 states and 7823 transitions. [2022-07-21 08:59:12,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 587 transitions, 1786 flow [2022-07-21 08:59:12,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 587 transitions, 1780 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:12,799 INFO L242 Difference]: Finished difference. Result has 404 places, 409 transitions, 1017 flow [2022-07-21 08:59:12,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1017, PETRI_PLACES=404, PETRI_TRANSITIONS=409} [2022-07-21 08:59:12,800 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 30 predicate places. [2022-07-21 08:59:12,800 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 409 transitions, 1017 flow [2022-07-21 08:59:12,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:12,802 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:12,802 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:12,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:59:12,802 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:12,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:12,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1184864045, now seen corresponding path program 2 times [2022-07-21 08:59:12,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:12,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413953506] [2022-07-21 08:59:12,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:12,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:12,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:12,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413953506] [2022-07-21 08:59:12,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413953506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:12,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:12,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:12,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971804567] [2022-07-21 08:59:12,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:12,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:12,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:12,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:12,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:12,935 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-21 08:59:12,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 409 transitions, 1017 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:12,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:12,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-21 08:59:12,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:15,222 INFO L129 PetriNetUnfolder]: 2176/12986 cut-off events. [2022-07-21 08:59:15,223 INFO L130 PetriNetUnfolder]: For 1873/1911 co-relation queries the response was YES. [2022-07-21 08:59:15,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19172 conditions, 12986 events. 2176/12986 cut-off events. For 1873/1911 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 162632 event pairs, 108 based on Foata normal form. 4/12456 useless extension candidates. Maximal degree in co-relation 19147. Up to 1325 conditions per place. [2022-07-21 08:59:15,304 INFO L132 encePairwiseOnDemand]: 398/414 looper letters, 349 selfloop transitions, 48 changer transitions 0/707 dead transitions. [2022-07-21 08:59:15,304 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 707 transitions, 2917 flow [2022-07-21 08:59:15,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 08:59:15,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-21 08:59:15,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 9502 transitions. [2022-07-21 08:59:15,319 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8197032436162871 [2022-07-21 08:59:15,319 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 9502 transitions. [2022-07-21 08:59:15,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 9502 transitions. [2022-07-21 08:59:15,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:15,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 9502 transitions. [2022-07-21 08:59:15,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 339.35714285714283) internal successors, (9502), 28 states have internal predecessors, (9502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 414.0) internal successors, (12006), 29 states have internal predecessors, (12006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,366 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 414.0) internal successors, (12006), 29 states have internal predecessors, (12006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,366 INFO L186 Difference]: Start difference. First operand has 404 places, 409 transitions, 1017 flow. Second operand 28 states and 9502 transitions. [2022-07-21 08:59:15,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 707 transitions, 2917 flow [2022-07-21 08:59:15,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 707 transitions, 2917 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:59:15,391 INFO L242 Difference]: Finished difference. Result has 444 places, 444 transitions, 1340 flow [2022-07-21 08:59:15,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1340, PETRI_PLACES=444, PETRI_TRANSITIONS=444} [2022-07-21 08:59:15,392 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 70 predicate places. [2022-07-21 08:59:15,392 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 444 transitions, 1340 flow [2022-07-21 08:59:15,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,393 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:15,393 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:15,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:59:15,394 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:15,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:15,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1960908911, now seen corresponding path program 3 times [2022-07-21 08:59:15,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:15,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741022578] [2022-07-21 08:59:15,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:15,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:15,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:15,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741022578] [2022-07-21 08:59:15,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741022578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:15,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:15,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:15,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286290767] [2022-07-21 08:59:15,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:15,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:15,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:15,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:15,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:15,549 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-21 08:59:15,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 444 transitions, 1340 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:15,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:15,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-21 08:59:15,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:18,663 INFO L129 PetriNetUnfolder]: 2824/17575 cut-off events. [2022-07-21 08:59:18,664 INFO L130 PetriNetUnfolder]: For 5957/6049 co-relation queries the response was YES. [2022-07-21 08:59:18,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27435 conditions, 17575 events. 2824/17575 cut-off events. For 5957/6049 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 236043 event pairs, 513 based on Foata normal form. 38/16965 useless extension candidates. Maximal degree in co-relation 27396. Up to 1334 conditions per place. [2022-07-21 08:59:18,837 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 345 selfloop transitions, 67 changer transitions 0/722 dead transitions. [2022-07-21 08:59:18,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 722 transitions, 3291 flow [2022-07-21 08:59:18,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 08:59:18,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-21 08:59:18,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 9526 transitions. [2022-07-21 08:59:18,940 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8217736369910283 [2022-07-21 08:59:18,941 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 9526 transitions. [2022-07-21 08:59:18,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 9526 transitions. [2022-07-21 08:59:18,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:18,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 9526 transitions. [2022-07-21 08:59:18,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 340.2142857142857) internal successors, (9526), 28 states have internal predecessors, (9526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:18,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 414.0) internal successors, (12006), 29 states have internal predecessors, (12006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:18,980 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 414.0) internal successors, (12006), 29 states have internal predecessors, (12006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:18,980 INFO L186 Difference]: Start difference. First operand has 444 places, 444 transitions, 1340 flow. Second operand 28 states and 9526 transitions. [2022-07-21 08:59:18,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 722 transitions, 3291 flow [2022-07-21 08:59:19,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 722 transitions, 3099 flow, removed 24 selfloop flow, removed 5 redundant places. [2022-07-21 08:59:19,021 INFO L242 Difference]: Finished difference. Result has 479 places, 469 transitions, 1652 flow [2022-07-21 08:59:19,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1652, PETRI_PLACES=479, PETRI_TRANSITIONS=469} [2022-07-21 08:59:19,024 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 105 predicate places. [2022-07-21 08:59:19,024 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 469 transitions, 1652 flow [2022-07-21 08:59:19,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:19,025 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:19,026 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:19,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:59:19,026 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:19,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:19,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1476650141, now seen corresponding path program 4 times [2022-07-21 08:59:19,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:19,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446853827] [2022-07-21 08:59:19,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:19,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:19,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:19,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:19,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446853827] [2022-07-21 08:59:19,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446853827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:19,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:19,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:19,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849343099] [2022-07-21 08:59:19,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:19,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:19,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:19,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:19,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:19,168 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-21 08:59:19,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 469 transitions, 1652 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:19,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:19,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-21 08:59:19,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:21,913 INFO L129 PetriNetUnfolder]: 2928/17954 cut-off events. [2022-07-21 08:59:21,913 INFO L130 PetriNetUnfolder]: For 11176/11310 co-relation queries the response was YES. [2022-07-21 08:59:22,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29599 conditions, 17954 events. 2928/17954 cut-off events. For 11176/11310 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 240616 event pairs, 313 based on Foata normal form. 15/17294 useless extension candidates. Maximal degree in co-relation 29546. Up to 2866 conditions per place. [2022-07-21 08:59:22,041 INFO L132 encePairwiseOnDemand]: 398/414 looper letters, 262 selfloop transitions, 58 changer transitions 0/630 dead transitions. [2022-07-21 08:59:22,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 630 transitions, 3245 flow [2022-07-21 08:59:22,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:59:22,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:59:22,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 6768 transitions. [2022-07-21 08:59:22,050 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8173913043478261 [2022-07-21 08:59:22,050 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 6768 transitions. [2022-07-21 08:59:22,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 6768 transitions. [2022-07-21 08:59:22,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:22,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 6768 transitions. [2022-07-21 08:59:22,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 338.4) internal successors, (6768), 20 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:22,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 414.0) internal successors, (8694), 21 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:22,068 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 414.0) internal successors, (8694), 21 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:22,068 INFO L186 Difference]: Start difference. First operand has 479 places, 469 transitions, 1652 flow. Second operand 20 states and 6768 transitions. [2022-07-21 08:59:22,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 630 transitions, 3245 flow [2022-07-21 08:59:22,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 630 transitions, 3069 flow, removed 11 selfloop flow, removed 12 redundant places. [2022-07-21 08:59:22,128 INFO L242 Difference]: Finished difference. Result has 497 places, 484 transitions, 1916 flow [2022-07-21 08:59:22,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1916, PETRI_PLACES=497, PETRI_TRANSITIONS=484} [2022-07-21 08:59:22,129 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 123 predicate places. [2022-07-21 08:59:22,130 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 484 transitions, 1916 flow [2022-07-21 08:59:22,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:22,131 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:22,132 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:22,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:59:22,132 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:22,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:22,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1039897095, now seen corresponding path program 5 times [2022-07-21 08:59:22,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:22,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314750612] [2022-07-21 08:59:22,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:22,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:22,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:22,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314750612] [2022-07-21 08:59:22,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314750612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:22,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:22,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:22,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727670944] [2022-07-21 08:59:22,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:22,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:22,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:22,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:22,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:22,282 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-21 08:59:22,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 484 transitions, 1916 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:22,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:22,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-21 08:59:22,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:25,512 INFO L129 PetriNetUnfolder]: 2922/17768 cut-off events. [2022-07-21 08:59:25,513 INFO L130 PetriNetUnfolder]: For 14799/14856 co-relation queries the response was YES. [2022-07-21 08:59:25,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30743 conditions, 17768 events. 2922/17768 cut-off events. For 14799/14856 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 237955 event pairs, 752 based on Foata normal form. 42/17138 useless extension candidates. Maximal degree in co-relation 30679. Up to 2134 conditions per place. [2022-07-21 08:59:25,650 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 293 selfloop transitions, 75 changer transitions 0/678 dead transitions. [2022-07-21 08:59:25,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 678 transitions, 3701 flow [2022-07-21 08:59:25,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 08:59:25,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-21 08:59:25,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 7817 transitions. [2022-07-21 08:59:25,655 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8209409787859694 [2022-07-21 08:59:25,655 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 7817 transitions. [2022-07-21 08:59:25,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 7817 transitions. [2022-07-21 08:59:25,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:25,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 7817 transitions. [2022-07-21 08:59:25,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 339.8695652173913) internal successors, (7817), 23 states have internal predecessors, (7817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:25,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:25,671 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:25,672 INFO L186 Difference]: Start difference. First operand has 497 places, 484 transitions, 1916 flow. Second operand 23 states and 7817 transitions. [2022-07-21 08:59:25,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 678 transitions, 3701 flow [2022-07-21 08:59:25,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 678 transitions, 3496 flow, removed 49 selfloop flow, removed 8 redundant places. [2022-07-21 08:59:25,763 INFO L242 Difference]: Finished difference. Result has 517 places, 490 transitions, 2052 flow [2022-07-21 08:59:25,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2052, PETRI_PLACES=517, PETRI_TRANSITIONS=490} [2022-07-21 08:59:25,765 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 143 predicate places. [2022-07-21 08:59:25,765 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 490 transitions, 2052 flow [2022-07-21 08:59:25,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:25,766 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:25,766 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:25,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:59:25,768 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:25,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:25,768 INFO L85 PathProgramCache]: Analyzing trace with hash 859002869, now seen corresponding path program 6 times [2022-07-21 08:59:25,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:25,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289278294] [2022-07-21 08:59:25,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:25,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:25,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:25,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:25,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289278294] [2022-07-21 08:59:25,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289278294] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:25,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:25,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:25,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33336118] [2022-07-21 08:59:25,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:25,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:25,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:25,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:25,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:25,886 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-21 08:59:25,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 490 transitions, 2052 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:25,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:25,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-21 08:59:25,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:29,069 INFO L129 PetriNetUnfolder]: 2989/18274 cut-off events. [2022-07-21 08:59:29,069 INFO L130 PetriNetUnfolder]: For 20654/20702 co-relation queries the response was YES. [2022-07-21 08:59:29,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32674 conditions, 18274 events. 2989/18274 cut-off events. For 20654/20702 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 244814 event pairs, 390 based on Foata normal form. 12/17579 useless extension candidates. Maximal degree in co-relation 32604. Up to 3267 conditions per place. [2022-07-21 08:59:29,207 INFO L132 encePairwiseOnDemand]: 398/414 looper letters, 266 selfloop transitions, 66 changer transitions 0/642 dead transitions. [2022-07-21 08:59:29,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 642 transitions, 3839 flow [2022-07-21 08:59:29,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:59:29,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:59:29,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 6765 transitions. [2022-07-21 08:59:29,211 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8170289855072463 [2022-07-21 08:59:29,211 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 6765 transitions. [2022-07-21 08:59:29,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 6765 transitions. [2022-07-21 08:59:29,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:29,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 6765 transitions. [2022-07-21 08:59:29,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 338.25) internal successors, (6765), 20 states have internal predecessors, (6765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:29,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 414.0) internal successors, (8694), 21 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:29,226 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 414.0) internal successors, (8694), 21 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:29,226 INFO L186 Difference]: Start difference. First operand has 517 places, 490 transitions, 2052 flow. Second operand 20 states and 6765 transitions. [2022-07-21 08:59:29,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 642 transitions, 3839 flow [2022-07-21 08:59:29,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 642 transitions, 3616 flow, removed 21 selfloop flow, removed 13 redundant places. [2022-07-21 08:59:29,331 INFO L242 Difference]: Finished difference. Result has 534 places, 513 transitions, 2536 flow [2022-07-21 08:59:29,331 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1930, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2536, PETRI_PLACES=534, PETRI_TRANSITIONS=513} [2022-07-21 08:59:29,332 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 160 predicate places. [2022-07-21 08:59:29,332 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 513 transitions, 2536 flow [2022-07-21 08:59:29,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:29,333 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:29,333 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:29,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:59:29,333 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:29,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:29,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1674883849, now seen corresponding path program 7 times [2022-07-21 08:59:29,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:29,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376969723] [2022-07-21 08:59:29,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:29,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:29,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:29,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:29,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376969723] [2022-07-21 08:59:29,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376969723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:29,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:29,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:29,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748582863] [2022-07-21 08:59:29,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:29,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:29,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:29,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:29,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:29,471 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-21 08:59:29,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 513 transitions, 2536 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:29,473 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:29,473 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-21 08:59:29,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:33,181 INFO L129 PetriNetUnfolder]: 3058/19392 cut-off events. [2022-07-21 08:59:33,181 INFO L130 PetriNetUnfolder]: For 26271/26311 co-relation queries the response was YES. [2022-07-21 08:59:33,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35001 conditions, 19392 events. 3058/19392 cut-off events. For 26271/26311 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 264797 event pairs, 618 based on Foata normal form. 32/18687 useless extension candidates. Maximal degree in co-relation 34920. Up to 1307 conditions per place. [2022-07-21 08:59:33,344 INFO L132 encePairwiseOnDemand]: 395/414 looper letters, 353 selfloop transitions, 129 changer transitions 0/792 dead transitions. [2022-07-21 08:59:33,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 792 transitions, 5128 flow [2022-07-21 08:59:33,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-21 08:59:33,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-21 08:59:33,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 9881 transitions. [2022-07-21 08:59:33,350 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8230051640846243 [2022-07-21 08:59:33,350 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 9881 transitions. [2022-07-21 08:59:33,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 9881 transitions. [2022-07-21 08:59:33,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:33,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 9881 transitions. [2022-07-21 08:59:33,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 340.7241379310345) internal successors, (9881), 29 states have internal predecessors, (9881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 414.0) internal successors, (12420), 30 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,369 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 414.0) internal successors, (12420), 30 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,369 INFO L186 Difference]: Start difference. First operand has 534 places, 513 transitions, 2536 flow. Second operand 29 states and 9881 transitions. [2022-07-21 08:59:33,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 792 transitions, 5128 flow [2022-07-21 08:59:33,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 792 transitions, 4833 flow, removed 107 selfloop flow, removed 6 redundant places. [2022-07-21 08:59:33,491 INFO L242 Difference]: Finished difference. Result has 568 places, 543 transitions, 2952 flow [2022-07-21 08:59:33,492 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2952, PETRI_PLACES=568, PETRI_TRANSITIONS=543} [2022-07-21 08:59:33,493 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 194 predicate places. [2022-07-21 08:59:33,493 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 543 transitions, 2952 flow [2022-07-21 08:59:33,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,494 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:33,494 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:33,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:59:33,494 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:33,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:33,495 INFO L85 PathProgramCache]: Analyzing trace with hash 549687077, now seen corresponding path program 8 times [2022-07-21 08:59:33,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:33,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592929414] [2022-07-21 08:59:33,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:33,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:33,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:33,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592929414] [2022-07-21 08:59:33,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592929414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:33,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:33,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:33,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438732787] [2022-07-21 08:59:33,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:33,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:33,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:33,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:33,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:33,770 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-21 08:59:33,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 543 transitions, 2952 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:33,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:33,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-21 08:59:33,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:38,523 INFO L129 PetriNetUnfolder]: 3753/22963 cut-off events. [2022-07-21 08:59:38,524 INFO L130 PetriNetUnfolder]: For 39453/39537 co-relation queries the response was YES. [2022-07-21 08:59:38,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44410 conditions, 22963 events. 3753/22963 cut-off events. For 39453/39537 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 322364 event pairs, 544 based on Foata normal form. 39/22142 useless extension candidates. Maximal degree in co-relation 44317. Up to 1736 conditions per place. [2022-07-21 08:59:38,961 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 376 selfloop transitions, 146 changer transitions 0/832 dead transitions. [2022-07-21 08:59:38,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 832 transitions, 6095 flow [2022-07-21 08:59:38,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-21 08:59:38,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-21 08:59:38,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 9866 transitions. [2022-07-21 08:59:38,967 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8217557887722805 [2022-07-21 08:59:38,967 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 9866 transitions. [2022-07-21 08:59:38,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 9866 transitions. [2022-07-21 08:59:38,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:38,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 9866 transitions. [2022-07-21 08:59:38,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 340.2068965517241) internal successors, (9866), 29 states have internal predecessors, (9866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 414.0) internal successors, (12420), 30 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,990 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 414.0) internal successors, (12420), 30 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,990 INFO L186 Difference]: Start difference. First operand has 568 places, 543 transitions, 2952 flow. Second operand 29 states and 9866 transitions. [2022-07-21 08:59:38,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 832 transitions, 6095 flow [2022-07-21 08:59:39,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 832 transitions, 5867 flow, removed 27 selfloop flow, removed 8 redundant places. [2022-07-21 08:59:39,236 INFO L242 Difference]: Finished difference. Result has 611 places, 585 transitions, 3892 flow [2022-07-21 08:59:39,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3892, PETRI_PLACES=611, PETRI_TRANSITIONS=585} [2022-07-21 08:59:39,237 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 237 predicate places. [2022-07-21 08:59:39,237 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 585 transitions, 3892 flow [2022-07-21 08:59:39,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:39,238 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:39,238 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:39,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:59:39,239 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:39,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:39,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1204322865, now seen corresponding path program 9 times [2022-07-21 08:59:39,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:39,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224648296] [2022-07-21 08:59:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:39,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:39,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:39,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224648296] [2022-07-21 08:59:39,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224648296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:39,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:39,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:39,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714034103] [2022-07-21 08:59:39,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:39,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:39,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:39,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:39,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:39,356 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-21 08:59:39,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 585 transitions, 3892 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:39,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:39,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-21 08:59:39,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:44,543 INFO L129 PetriNetUnfolder]: 3740/23918 cut-off events. [2022-07-21 08:59:44,543 INFO L130 PetriNetUnfolder]: For 56109/56259 co-relation queries the response was YES. [2022-07-21 08:59:44,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47957 conditions, 23918 events. 3740/23918 cut-off events. For 56109/56259 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 340698 event pairs, 623 based on Foata normal form. 56/23109 useless extension candidates. Maximal degree in co-relation 47840. Up to 2154 conditions per place. [2022-07-21 08:59:45,050 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 394 selfloop transitions, 129 changer transitions 0/833 dead transitions. [2022-07-21 08:59:45,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 833 transitions, 6897 flow [2022-07-21 08:59:45,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-21 08:59:45,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-21 08:59:45,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 9189 transitions. [2022-07-21 08:59:45,057 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.822061191626409 [2022-07-21 08:59:45,057 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 9189 transitions. [2022-07-21 08:59:45,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 9189 transitions. [2022-07-21 08:59:45,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:45,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 9189 transitions. [2022-07-21 08:59:45,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 340.3333333333333) internal successors, (9189), 27 states have internal predecessors, (9189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 414.0) internal successors, (11592), 28 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,088 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 414.0) internal successors, (11592), 28 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,088 INFO L186 Difference]: Start difference. First operand has 611 places, 585 transitions, 3892 flow. Second operand 27 states and 9189 transitions. [2022-07-21 08:59:45,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 833 transitions, 6897 flow [2022-07-21 08:59:45,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 833 transitions, 6423 flow, removed 206 selfloop flow, removed 3 redundant places. [2022-07-21 08:59:45,426 INFO L242 Difference]: Finished difference. Result has 638 places, 590 transitions, 4025 flow [2022-07-21 08:59:45,427 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=3622, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4025, PETRI_PLACES=638, PETRI_TRANSITIONS=590} [2022-07-21 08:59:45,428 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 264 predicate places. [2022-07-21 08:59:45,428 INFO L495 AbstractCegarLoop]: Abstraction has has 638 places, 590 transitions, 4025 flow [2022-07-21 08:59:45,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,429 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:45,429 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:45,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:59:45,429 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:45,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:45,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1482036129, now seen corresponding path program 10 times [2022-07-21 08:59:45,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:45,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439821733] [2022-07-21 08:59:45,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:45,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:45,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:45,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439821733] [2022-07-21 08:59:45,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439821733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:45,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:45,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:45,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504642075] [2022-07-21 08:59:45,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:45,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:45,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:45,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:45,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:45,529 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-21 08:59:45,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 590 transitions, 4025 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:45,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-21 08:59:45,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:50,872 INFO L129 PetriNetUnfolder]: 3802/23100 cut-off events. [2022-07-21 08:59:50,872 INFO L130 PetriNetUnfolder]: For 52339/52453 co-relation queries the response was YES. [2022-07-21 08:59:51,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47849 conditions, 23100 events. 3802/23100 cut-off events. For 52339/52453 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 323845 event pairs, 526 based on Foata normal form. 43/22293 useless extension candidates. Maximal degree in co-relation 47728. Up to 1710 conditions per place. [2022-07-21 08:59:51,517 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 362 selfloop transitions, 143 changer transitions 0/815 dead transitions. [2022-07-21 08:59:51,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 815 transitions, 6787 flow [2022-07-21 08:59:51,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:59:51,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:59:51,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 8193 transitions. [2022-07-21 08:59:51,522 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8245772946859904 [2022-07-21 08:59:51,522 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 8193 transitions. [2022-07-21 08:59:51,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 8193 transitions. [2022-07-21 08:59:51,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:51,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 8193 transitions. [2022-07-21 08:59:51,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 341.375) internal successors, (8193), 24 states have internal predecessors, (8193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:51,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 414.0) internal successors, (10350), 25 states have internal predecessors, (10350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:51,536 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 414.0) internal successors, (10350), 25 states have internal predecessors, (10350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:51,536 INFO L186 Difference]: Start difference. First operand has 638 places, 590 transitions, 4025 flow. Second operand 24 states and 8193 transitions. [2022-07-21 08:59:51,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 815 transitions, 6787 flow [2022-07-21 08:59:51,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 815 transitions, 6426 flow, removed 45 selfloop flow, removed 20 redundant places. [2022-07-21 08:59:51,882 INFO L242 Difference]: Finished difference. Result has 649 places, 602 transitions, 4420 flow [2022-07-21 08:59:51,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=3784, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4420, PETRI_PLACES=649, PETRI_TRANSITIONS=602} [2022-07-21 08:59:51,883 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 275 predicate places. [2022-07-21 08:59:51,884 INFO L495 AbstractCegarLoop]: Abstraction has has 649 places, 602 transitions, 4420 flow [2022-07-21 08:59:51,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:51,884 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:51,884 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:51,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:59:51,885 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:59:51,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:51,885 INFO L85 PathProgramCache]: Analyzing trace with hash -42145455, now seen corresponding path program 11 times [2022-07-21 08:59:51,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:51,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837355845] [2022-07-21 08:59:51,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:51,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:52,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:52,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:52,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837355845] [2022-07-21 08:59:52,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837355845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:52,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:52,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:59:52,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373221872] [2022-07-21 08:59:52,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:52,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:59:52,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:52,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:59:52,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:59:52,164 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-21 08:59:52,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 602 transitions, 4420 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:52,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:52,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-21 08:59:52,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand