./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/pthread-ext/44_Solaris_space_map_sliced.i -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 33c040d0fbd9b1f189d3917c569371e7923ba6ef4820715ff1ef4976213f5b31 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:43:41,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:43:41,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:43:41,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:43:41,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:43:41,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:43:41,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:43:41,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:43:41,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:43:41,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:43:41,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:43:41,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:43:41,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:43:41,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:43:41,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:43:41,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:43:41,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:43:41,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:43:41,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:43:41,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:43:41,287 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:43:41,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:43:41,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:43:41,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:43:41,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:43:41,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:43:41,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:43:41,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:43:41,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:43:41,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:43:41,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:43:41,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:43:41,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:43:41,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:43:41,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:43:41,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:43:41,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:43:41,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:43:41,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:43:41,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:43:41,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:43:41,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:43:41,304 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:43:41,323 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:43:41,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:43:41,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:43:41,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:43:41,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:43:41,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:43:41,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:43:41,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:43:41,326 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:43:41,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:43:41,326 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:43:41,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:43:41,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:43:41,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:43:41,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:43:41,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:43:41,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:43:41,328 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:43:41,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:43:41,328 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:43:41,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:43:41,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:43:41,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:43:41,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:43:41,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:43:41,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:43:41,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:43:41,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:43:41,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:43:41,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:43:41,331 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:43:41,331 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:43:41,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:43:41,331 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33c040d0fbd9b1f189d3917c569371e7923ba6ef4820715ff1ef4976213f5b31 [2022-07-13 21:43:41,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:43:41,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:43:41,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:43:41,593 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:43:41,594 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:43:41,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i [2022-07-13 21:43:41,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5b9c5384/bc2fd51dff85412fb24a06ba9029940a/FLAG6066895c4 [2022-07-13 21:43:42,028 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:43:42,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i [2022-07-13 21:43:42,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5b9c5384/bc2fd51dff85412fb24a06ba9029940a/FLAG6066895c4 [2022-07-13 21:43:42,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5b9c5384/bc2fd51dff85412fb24a06ba9029940a [2022-07-13 21:43:42,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:43:42,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:43:42,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:43:42,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:43:42,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:43:42,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:43:42" (1/1) ... [2022-07-13 21:43:42,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e05afe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:43:42, skipping insertion in model container [2022-07-13 21:43:42,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:43:42" (1/1) ... [2022-07-13 21:43:42,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:43:42,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:43:42,697 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/pthread-ext/44_Solaris_space_map_sliced.i[30327,30340] [2022-07-13 21:43:42,701 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/pthread-ext/44_Solaris_space_map_sliced.i[30457,30470] [2022-07-13 21:43:42,704 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/pthread-ext/44_Solaris_space_map_sliced.i[30859,30872] [2022-07-13 21:43:42,708 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/pthread-ext/44_Solaris_space_map_sliced.i[31417,31430] [2022-07-13 21:43:42,710 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/pthread-ext/44_Solaris_space_map_sliced.i[31600,31613] [2022-07-13 21:43:42,711 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/pthread-ext/44_Solaris_space_map_sliced.i[31761,31774] [2022-07-13 21:43:42,714 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/pthread-ext/44_Solaris_space_map_sliced.i[32305,32318] [2022-07-13 21:43:42,715 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/pthread-ext/44_Solaris_space_map_sliced.i[32447,32460] [2022-07-13 21:43:42,718 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/pthread-ext/44_Solaris_space_map_sliced.i[33033,33046] [2022-07-13 21:43:42,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:43:42,727 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:43:42,757 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/pthread-ext/44_Solaris_space_map_sliced.i[30327,30340] [2022-07-13 21:43:42,764 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/pthread-ext/44_Solaris_space_map_sliced.i[30457,30470] [2022-07-13 21:43:42,767 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/pthread-ext/44_Solaris_space_map_sliced.i[30859,30872] [2022-07-13 21:43:42,771 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/pthread-ext/44_Solaris_space_map_sliced.i[31417,31430] [2022-07-13 21:43:42,774 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/pthread-ext/44_Solaris_space_map_sliced.i[31600,31613] [2022-07-13 21:43:42,776 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/pthread-ext/44_Solaris_space_map_sliced.i[31761,31774] [2022-07-13 21:43:42,779 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/pthread-ext/44_Solaris_space_map_sliced.i[32305,32318] [2022-07-13 21:43:42,779 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/pthread-ext/44_Solaris_space_map_sliced.i[32447,32460] [2022-07-13 21:43:42,781 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/pthread-ext/44_Solaris_space_map_sliced.i[33033,33046] [2022-07-13 21:43:42,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:43:42,815 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:43:42,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:43:42 WrapperNode [2022-07-13 21:43:42,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:43:42,817 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:43:42,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:43:42,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:43:42,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:43:42" (1/1) ... [2022-07-13 21:43:42,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:43:42" (1/1) ... [2022-07-13 21:43:42,879 INFO L137 Inliner]: procedures = 178, calls = 34, calls flagged for inlining = 26, calls inlined = 37, statements flattened = 296 [2022-07-13 21:43:42,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:43:42,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:43:42,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:43:42,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:43:42,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:43:42" (1/1) ... [2022-07-13 21:43:42,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:43:42" (1/1) ... [2022-07-13 21:43:42,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:43:42" (1/1) ... [2022-07-13 21:43:42,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:43:42" (1/1) ... [2022-07-13 21:43:42,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:43:42" (1/1) ... [2022-07-13 21:43:42,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:43:42" (1/1) ... [2022-07-13 21:43:42,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:43:42" (1/1) ... [2022-07-13 21:43:42,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:43:42,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:43:42,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:43:42,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:43:42,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:43:42" (1/1) ... [2022-07-13 21:43:42,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:43:42,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:43:42,981 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) [2022-07-13 21:43:43,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 21:43:43,030 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-13 21:43:43,030 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-13 21:43:43,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:43:43,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:43:43,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:43:43,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:43:43,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:43:43,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:43:43,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:43:43,034 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:43:43,148 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:43:43,150 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:43:43,519 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:43:43,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:43:43,624 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-13 21:43:43,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:43:43 BoogieIcfgContainer [2022-07-13 21:43:43,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:43:43,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:43:43,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:43:43,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:43:43,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:43:42" (1/3) ... [2022-07-13 21:43:43,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7849e650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:43:43, skipping insertion in model container [2022-07-13 21:43:43,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:43:42" (2/3) ... [2022-07-13 21:43:43,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7849e650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:43:43, skipping insertion in model container [2022-07-13 21:43:43,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:43:43" (3/3) ... [2022-07-13 21:43:43,634 INFO L111 eAbstractionObserver]: Analyzing ICFG 44_Solaris_space_map_sliced.i [2022-07-13 21:43:43,639 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:43:43,646 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:43:43,647 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-07-13 21:43:43,647 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:43:43,722 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:43:43,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 199 places, 249 transitions, 503 flow [2022-07-13 21:43:43,839 INFO L129 PetriNetUnfolder]: 54/260 cut-off events. [2022-07-13 21:43:43,840 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:43:43,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 260 events. 54/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 857 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 230. Up to 9 conditions per place. [2022-07-13 21:43:43,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 249 transitions, 503 flow [2022-07-13 21:43:43,857 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 249 transitions, 503 flow [2022-07-13 21:43:43,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:43:43,874 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@11609a61, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2e1bc32 [2022-07-13 21:43:43,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-07-13 21:43:43,885 INFO L129 PetriNetUnfolder]: 2/40 cut-off events. [2022-07-13 21:43:43,886 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:43:43,886 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:43,887 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] [2022-07-13 21:43:43,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err8ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2022-07-13 21:43:43,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:43,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1488724176, now seen corresponding path program 1 times [2022-07-13 21:43:43,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:43,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407928281] [2022-07-13 21:43:43,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:43,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:43:44,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:44,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407928281] [2022-07-13 21:43:44,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407928281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:44,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:44,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:44,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495722200] [2022-07-13 21:43:44,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:44,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:44,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:44,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:44,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:44,167 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 249 [2022-07-13 21:43:44,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 249 transitions, 503 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:44,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:44,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 249 [2022-07-13 21:43:44,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:44,266 INFO L129 PetriNetUnfolder]: 19/187 cut-off events. [2022-07-13 21:43:44,266 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-13 21:43:44,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 187 events. 19/187 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 575 event pairs, 0 based on Foata normal form. 42/206 useless extension candidates. Maximal degree in co-relation 191. Up to 21 conditions per place. [2022-07-13 21:43:44,269 INFO L132 encePairwiseOnDemand]: 204/249 looper letters, 17 selfloop transitions, 12 changer transitions 0/183 dead transitions. [2022-07-13 21:43:44,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 183 transitions, 429 flow [2022-07-13 21:43:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:44,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:44,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2022-07-13 21:43:44,284 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7603748326639893 [2022-07-13 21:43:44,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2022-07-13 21:43:44,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2022-07-13 21:43:44,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:44,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2022-07-13 21:43:44,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:44,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:44,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:44,303 INFO L186 Difference]: Start difference. First operand has 199 places, 249 transitions, 503 flow. Second operand 3 states and 568 transitions. [2022-07-13 21:43:44,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 183 transitions, 429 flow [2022-07-13 21:43:44,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 183 transitions, 429 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 21:43:44,311 INFO L242 Difference]: Finished difference. Result has 169 places, 183 transitions, 395 flow [2022-07-13 21:43:44,313 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=395, PETRI_PLACES=169, PETRI_TRANSITIONS=183} [2022-07-13 21:43:44,317 INFO L279 CegarLoopForPetriNet]: 199 programPoint places, -30 predicate places. [2022-07-13 21:43:44,318 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 183 transitions, 395 flow [2022-07-13 21:43:44,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:44,319 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:44,319 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:43:44,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:43:44,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2022-07-13 21:43:44,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:44,320 INFO L85 PathProgramCache]: Analyzing trace with hash 915760687, now seen corresponding path program 1 times [2022-07-13 21:43:44,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:44,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819818545] [2022-07-13 21:43:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:44,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:43:44,344 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:43:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:43:44,390 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:43:44,390 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:43:44,391 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-07-13 21:43:44,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (17 of 19 remaining) [2022-07-13 21:43:44,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (16 of 19 remaining) [2022-07-13 21:43:44,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (15 of 19 remaining) [2022-07-13 21:43:44,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (14 of 19 remaining) [2022-07-13 21:43:44,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (13 of 19 remaining) [2022-07-13 21:43:44,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (12 of 19 remaining) [2022-07-13 21:43:44,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (11 of 19 remaining) [2022-07-13 21:43:44,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (10 of 19 remaining) [2022-07-13 21:43:44,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (9 of 19 remaining) [2022-07-13 21:43:44,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (8 of 19 remaining) [2022-07-13 21:43:44,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 19 remaining) [2022-07-13 21:43:44,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 19 remaining) [2022-07-13 21:43:44,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 19 remaining) [2022-07-13 21:43:44,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (4 of 19 remaining) [2022-07-13 21:43:44,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (3 of 19 remaining) [2022-07-13 21:43:44,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (2 of 19 remaining) [2022-07-13 21:43:44,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (1 of 19 remaining) [2022-07-13 21:43:44,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (0 of 19 remaining) [2022-07-13 21:43:44,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:43:44,397 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 21:43:44,399 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:43:44,399 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-13 21:43:44,471 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:43:44,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 367 places, 467 transitions, 946 flow [2022-07-13 21:43:44,580 INFO L129 PetriNetUnfolder]: 107/491 cut-off events. [2022-07-13 21:43:44,581 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 21:43:44,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 491 events. 107/491 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2268 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 447. Up to 9 conditions per place. [2022-07-13 21:43:44,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 467 transitions, 946 flow [2022-07-13 21:43:44,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 367 places, 467 transitions, 946 flow [2022-07-13 21:43:44,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:43:44,612 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@11609a61, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2e1bc32 [2022-07-13 21:43:44,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-07-13 21:43:44,615 INFO L129 PetriNetUnfolder]: 2/41 cut-off events. [2022-07-13 21:43:44,616 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:43:44,616 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:44,616 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] [2022-07-13 21:43:44,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err8ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2022-07-13 21:43:44,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:44,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1631231831, now seen corresponding path program 1 times [2022-07-13 21:43:44,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:44,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551887642] [2022-07-13 21:43:44,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:44,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:43:44,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:44,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551887642] [2022-07-13 21:43:44,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551887642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:44,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:44,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:44,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433606675] [2022-07-13 21:43:44,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:44,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:44,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:44,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:44,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:44,701 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 467 [2022-07-13 21:43:44,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 467 transitions, 946 flow. Second operand has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:44,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:44,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 467 [2022-07-13 21:43:44,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:45,114 INFO L129 PetriNetUnfolder]: 345/2347 cut-off events. [2022-07-13 21:43:45,114 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-07-13 21:43:45,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2862 conditions, 2347 events. 345/2347 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 19984 event pairs, 42 based on Foata normal form. 849/2857 useless extension candidates. Maximal degree in co-relation 2514. Up to 333 conditions per place. [2022-07-13 21:43:45,128 INFO L132 encePairwiseOnDemand]: 379/467 looper letters, 34 selfloop transitions, 24 changer transitions 0/343 dead transitions. [2022-07-13 21:43:45,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 343 transitions, 819 flow [2022-07-13 21:43:45,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:45,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:45,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1064 transitions. [2022-07-13 21:43:45,132 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7594575303354747 [2022-07-13 21:43:45,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1064 transitions. [2022-07-13 21:43:45,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1064 transitions. [2022-07-13 21:43:45,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:45,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1064 transitions. [2022-07-13 21:43:45,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 354.6666666666667) internal successors, (1064), 3 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:45,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:45,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:45,141 INFO L186 Difference]: Start difference. First operand has 367 places, 467 transitions, 946 flow. Second operand 3 states and 1064 transitions. [2022-07-13 21:43:45,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 343 transitions, 819 flow [2022-07-13 21:43:45,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 343 transitions, 817 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-07-13 21:43:45,154 INFO L242 Difference]: Finished difference. Result has 311 places, 342 transitions, 742 flow [2022-07-13 21:43:45,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=742, PETRI_PLACES=311, PETRI_TRANSITIONS=342} [2022-07-13 21:43:45,156 INFO L279 CegarLoopForPetriNet]: 367 programPoint places, -56 predicate places. [2022-07-13 21:43:45,156 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 342 transitions, 742 flow [2022-07-13 21:43:45,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:45,157 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:45,158 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:43:45,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:43:45,158 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2022-07-13 21:43:45,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:45,159 INFO L85 PathProgramCache]: Analyzing trace with hash 629357156, now seen corresponding path program 1 times [2022-07-13 21:43:45,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:45,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004373543] [2022-07-13 21:43:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:45,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:43:45,200 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:43:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:43:45,220 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:43:45,221 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:43:45,224 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 28 remaining) [2022-07-13 21:43:45,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (26 of 28 remaining) [2022-07-13 21:43:45,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (25 of 28 remaining) [2022-07-13 21:43:45,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (24 of 28 remaining) [2022-07-13 21:43:45,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (23 of 28 remaining) [2022-07-13 21:43:45,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (22 of 28 remaining) [2022-07-13 21:43:45,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (21 of 28 remaining) [2022-07-13 21:43:45,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (20 of 28 remaining) [2022-07-13 21:43:45,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (19 of 28 remaining) [2022-07-13 21:43:45,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (18 of 28 remaining) [2022-07-13 21:43:45,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (17 of 28 remaining) [2022-07-13 21:43:45,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (16 of 28 remaining) [2022-07-13 21:43:45,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (15 of 28 remaining) [2022-07-13 21:43:45,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (14 of 28 remaining) [2022-07-13 21:43:45,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (13 of 28 remaining) [2022-07-13 21:43:45,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (12 of 28 remaining) [2022-07-13 21:43:45,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (11 of 28 remaining) [2022-07-13 21:43:45,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (10 of 28 remaining) [2022-07-13 21:43:45,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (9 of 28 remaining) [2022-07-13 21:43:45,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (8 of 28 remaining) [2022-07-13 21:43:45,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 28 remaining) [2022-07-13 21:43:45,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 28 remaining) [2022-07-13 21:43:45,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 28 remaining) [2022-07-13 21:43:45,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (4 of 28 remaining) [2022-07-13 21:43:45,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (3 of 28 remaining) [2022-07-13 21:43:45,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (2 of 28 remaining) [2022-07-13 21:43:45,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (1 of 28 remaining) [2022-07-13 21:43:45,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (0 of 28 remaining) [2022-07-13 21:43:45,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:43:45,240 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 21:43:45,240 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:43:45,241 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-13 21:43:45,307 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:43:45,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 535 places, 685 transitions, 1391 flow [2022-07-13 21:43:45,492 INFO L129 PetriNetUnfolder]: 160/722 cut-off events. [2022-07-13 21:43:45,492 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-13 21:43:45,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 722 events. 160/722 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3815 event pairs, 0 based on Foata normal form. 0/531 useless extension candidates. Maximal degree in co-relation 664. Up to 9 conditions per place. [2022-07-13 21:43:45,518 INFO L82 GeneralOperation]: Start removeDead. Operand has 535 places, 685 transitions, 1391 flow [2022-07-13 21:43:45,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 535 places, 685 transitions, 1391 flow [2022-07-13 21:43:45,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:43:45,582 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@11609a61, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2e1bc32 [2022-07-13 21:43:45,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-07-13 21:43:45,585 INFO L129 PetriNetUnfolder]: 2/41 cut-off events. [2022-07-13 21:43:45,585 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:43:45,585 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:45,585 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] [2022-07-13 21:43:45,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err8ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2022-07-13 21:43:45,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:45,587 INFO L85 PathProgramCache]: Analyzing trace with hash -232983006, now seen corresponding path program 1 times [2022-07-13 21:43:45,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:45,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136866978] [2022-07-13 21:43:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:45,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:43:45,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:45,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136866978] [2022-07-13 21:43:45,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136866978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:45,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:45,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:45,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027970790] [2022-07-13 21:43:45,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:45,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:45,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:45,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:45,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:45,654 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 685 [2022-07-13 21:43:45,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 685 transitions, 1391 flow. Second operand has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:45,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:45,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 685 [2022-07-13 21:43:45,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:48,492 INFO L129 PetriNetUnfolder]: 3978/24717 cut-off events. [2022-07-13 21:43:48,492 INFO L130 PetriNetUnfolder]: For 1891/1891 co-relation queries the response was YES. [2022-07-13 21:43:48,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30714 conditions, 24717 events. 3978/24717 cut-off events. For 1891/1891 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 334928 event pairs, 543 based on Foata normal form. 12122/33207 useless extension candidates. Maximal degree in co-relation 17172. Up to 3672 conditions per place. [2022-07-13 21:43:48,745 INFO L132 encePairwiseOnDemand]: 554/685 looper letters, 51 selfloop transitions, 36 changer transitions 0/503 dead transitions. [2022-07-13 21:43:48,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 503 transitions, 1213 flow [2022-07-13 21:43:48,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:48,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:48,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1552 transitions. [2022-07-13 21:43:48,750 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7552311435523115 [2022-07-13 21:43:48,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1552 transitions. [2022-07-13 21:43:48,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1552 transitions. [2022-07-13 21:43:48,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:48,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1552 transitions. [2022-07-13 21:43:48,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 517.3333333333334) internal successors, (1552), 3 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:48,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:48,760 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:48,760 INFO L186 Difference]: Start difference. First operand has 535 places, 685 transitions, 1391 flow. Second operand 3 states and 1552 transitions. [2022-07-13 21:43:48,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 503 transitions, 1213 flow [2022-07-13 21:43:48,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 503 transitions, 1205 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-07-13 21:43:48,770 INFO L242 Difference]: Finished difference. Result has 453 places, 501 transitions, 1089 flow [2022-07-13 21:43:48,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1089, PETRI_PLACES=453, PETRI_TRANSITIONS=501} [2022-07-13 21:43:48,772 INFO L279 CegarLoopForPetriNet]: 535 programPoint places, -82 predicate places. [2022-07-13 21:43:48,773 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 501 transitions, 1089 flow [2022-07-13 21:43:48,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:48,774 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:48,774 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] [2022-07-13 21:43:48,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:43:48,774 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2022-07-13 21:43:48,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:48,775 INFO L85 PathProgramCache]: Analyzing trace with hash 443104880, now seen corresponding path program 1 times [2022-07-13 21:43:48,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:48,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164910031] [2022-07-13 21:43:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:48,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:43:48,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:48,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164910031] [2022-07-13 21:43:48,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164910031] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:48,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:48,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:48,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039155970] [2022-07-13 21:43:48,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:48,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:48,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:48,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:48,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:48,831 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 520 out of 685 [2022-07-13 21:43:48,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 501 transitions, 1089 flow. Second operand has 3 states, 3 states have (on average 521.6666666666666) internal successors, (1565), 3 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:48,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:48,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 520 of 685 [2022-07-13 21:43:48,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:50,943 INFO L129 PetriNetUnfolder]: 3511/23771 cut-off events. [2022-07-13 21:43:50,944 INFO L130 PetriNetUnfolder]: For 1485/1615 co-relation queries the response was YES. [2022-07-13 21:43:51,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29447 conditions, 23771 events. 3511/23771 cut-off events. For 1485/1615 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 321149 event pairs, 318 based on Foata normal form. 0/20562 useless extension candidates. Maximal degree in co-relation 29174. Up to 1946 conditions per place. [2022-07-13 21:43:51,134 INFO L132 encePairwiseOnDemand]: 669/685 looper letters, 104 selfloop transitions, 7 changer transitions 0/548 dead transitions. [2022-07-13 21:43:51,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 548 transitions, 1475 flow [2022-07-13 21:43:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:51,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1680 transitions. [2022-07-13 21:43:51,139 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8175182481751825 [2022-07-13 21:43:51,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1680 transitions. [2022-07-13 21:43:51,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1680 transitions. [2022-07-13 21:43:51,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:51,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1680 transitions. [2022-07-13 21:43:51,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 560.0) internal successors, (1680), 3 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:51,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:51,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:51,150 INFO L186 Difference]: Start difference. First operand has 453 places, 501 transitions, 1089 flow. Second operand 3 states and 1680 transitions. [2022-07-13 21:43:51,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 548 transitions, 1475 flow [2022-07-13 21:43:51,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 548 transitions, 1409 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:43:51,168 INFO L242 Difference]: Finished difference. Result has 456 places, 507 transitions, 1123 flow [2022-07-13 21:43:51,169 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1123, PETRI_PLACES=456, PETRI_TRANSITIONS=507} [2022-07-13 21:43:51,171 INFO L279 CegarLoopForPetriNet]: 535 programPoint places, -79 predicate places. [2022-07-13 21:43:51,172 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 507 transitions, 1123 flow [2022-07-13 21:43:51,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 521.6666666666666) internal successors, (1565), 3 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:51,175 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:51,175 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] [2022-07-13 21:43:51,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:43:51,176 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2022-07-13 21:43:51,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:51,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1768441860, now seen corresponding path program 1 times [2022-07-13 21:43:51,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:51,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862207271] [2022-07-13 21:43:51,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:51,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:43:51,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:51,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862207271] [2022-07-13 21:43:51,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862207271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:51,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:51,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:51,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141258303] [2022-07-13 21:43:51,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:51,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:51,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:51,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:51,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:51,243 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 520 out of 685 [2022-07-13 21:43:51,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 507 transitions, 1123 flow. Second operand has 3 states, 3 states have (on average 521.6666666666666) internal successors, (1565), 3 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:51,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:51,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 520 of 685 [2022-07-13 21:43:51,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:53,490 INFO L129 PetriNetUnfolder]: 3937/29013 cut-off events. [2022-07-13 21:43:53,490 INFO L130 PetriNetUnfolder]: For 1086/1234 co-relation queries the response was YES. [2022-07-13 21:43:53,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35497 conditions, 29013 events. 3937/29013 cut-off events. For 1086/1234 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 411626 event pairs, 656 based on Foata normal form. 0/25720 useless extension candidates. Maximal degree in co-relation 35216. Up to 2559 conditions per place. [2022-07-13 21:43:53,689 INFO L132 encePairwiseOnDemand]: 666/685 looper letters, 86 selfloop transitions, 10 changer transitions 0/539 dead transitions. [2022-07-13 21:43:53,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 539 transitions, 1419 flow [2022-07-13 21:43:53,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:53,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1665 transitions. [2022-07-13 21:43:53,693 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8102189781021898 [2022-07-13 21:43:53,693 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1665 transitions. [2022-07-13 21:43:53,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1665 transitions. [2022-07-13 21:43:53,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:53,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1665 transitions. [2022-07-13 21:43:53,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 555.0) internal successors, (1665), 3 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:53,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:53,703 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:53,703 INFO L186 Difference]: Start difference. First operand has 456 places, 507 transitions, 1123 flow. Second operand 3 states and 1665 transitions. [2022-07-13 21:43:53,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 539 transitions, 1419 flow [2022-07-13 21:43:53,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 539 transitions, 1405 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 21:43:53,722 INFO L242 Difference]: Finished difference. Result has 458 places, 507 transitions, 1167 flow [2022-07-13 21:43:53,723 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1167, PETRI_PLACES=458, PETRI_TRANSITIONS=507} [2022-07-13 21:43:53,723 INFO L279 CegarLoopForPetriNet]: 535 programPoint places, -77 predicate places. [2022-07-13 21:43:53,723 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 507 transitions, 1167 flow [2022-07-13 21:43:53,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 521.6666666666666) internal successors, (1565), 3 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:53,725 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:53,725 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:43:53,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:43:53,725 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2022-07-13 21:43:53,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:53,726 INFO L85 PathProgramCache]: Analyzing trace with hash 697064334, now seen corresponding path program 1 times [2022-07-13 21:43:53,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:53,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852025847] [2022-07-13 21:43:53,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:53,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:43:53,739 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:43:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:43:53,765 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:43:53,768 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:43:53,768 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2022-07-13 21:43:53,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (35 of 37 remaining) [2022-07-13 21:43:53,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (34 of 37 remaining) [2022-07-13 21:43:53,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (33 of 37 remaining) [2022-07-13 21:43:53,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (32 of 37 remaining) [2022-07-13 21:43:53,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (31 of 37 remaining) [2022-07-13 21:43:53,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (30 of 37 remaining) [2022-07-13 21:43:53,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (29 of 37 remaining) [2022-07-13 21:43:53,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (28 of 37 remaining) [2022-07-13 21:43:53,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (27 of 37 remaining) [2022-07-13 21:43:53,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (26 of 37 remaining) [2022-07-13 21:43:53,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (25 of 37 remaining) [2022-07-13 21:43:53,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (24 of 37 remaining) [2022-07-13 21:43:53,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (23 of 37 remaining) [2022-07-13 21:43:53,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (22 of 37 remaining) [2022-07-13 21:43:53,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (21 of 37 remaining) [2022-07-13 21:43:53,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (20 of 37 remaining) [2022-07-13 21:43:53,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (19 of 37 remaining) [2022-07-13 21:43:53,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (18 of 37 remaining) [2022-07-13 21:43:53,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (17 of 37 remaining) [2022-07-13 21:43:53,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (16 of 37 remaining) [2022-07-13 21:43:53,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (15 of 37 remaining) [2022-07-13 21:43:53,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (14 of 37 remaining) [2022-07-13 21:43:53,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (13 of 37 remaining) [2022-07-13 21:43:53,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (12 of 37 remaining) [2022-07-13 21:43:53,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (11 of 37 remaining) [2022-07-13 21:43:53,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (10 of 37 remaining) [2022-07-13 21:43:53,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (9 of 37 remaining) [2022-07-13 21:43:53,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (8 of 37 remaining) [2022-07-13 21:43:53,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 37 remaining) [2022-07-13 21:43:53,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 37 remaining) [2022-07-13 21:43:53,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 37 remaining) [2022-07-13 21:43:53,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (4 of 37 remaining) [2022-07-13 21:43:53,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (3 of 37 remaining) [2022-07-13 21:43:53,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (2 of 37 remaining) [2022-07-13 21:43:53,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (1 of 37 remaining) [2022-07-13 21:43:53,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (0 of 37 remaining) [2022-07-13 21:43:53,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:43:53,777 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-13 21:43:53,778 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:43:53,778 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-13 21:43:53,839 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:43:53,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 703 places, 903 transitions, 1838 flow [2022-07-13 21:43:54,220 INFO L129 PetriNetUnfolder]: 213/953 cut-off events. [2022-07-13 21:43:54,220 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-13 21:43:54,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 953 events. 213/953 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5327 event pairs, 0 based on Foata normal form. 0/699 useless extension candidates. Maximal degree in co-relation 881. Up to 10 conditions per place. [2022-07-13 21:43:54,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 703 places, 903 transitions, 1838 flow [2022-07-13 21:43:54,290 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 703 places, 903 transitions, 1838 flow [2022-07-13 21:43:54,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:43:54,292 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@11609a61, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2e1bc32 [2022-07-13 21:43:54,292 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-07-13 21:43:54,294 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2022-07-13 21:43:54,294 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:43:54,294 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:54,294 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] [2022-07-13 21:43:54,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err8ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 42 more)] === [2022-07-13 21:43:54,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:54,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1575584741, now seen corresponding path program 1 times [2022-07-13 21:43:54,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:54,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924515918] [2022-07-13 21:43:54,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:54,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:43:54,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:54,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924515918] [2022-07-13 21:43:54,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924515918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:54,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:54,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:54,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857383365] [2022-07-13 21:43:54,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:54,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:54,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:54,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:54,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:54,336 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 588 out of 903 [2022-07-13 21:43:54,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 703 places, 903 transitions, 1838 flow. Second operand has 3 states, 3 states have (on average 589.3333333333334) internal successors, (1768), 3 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:54,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:54,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 588 of 903 [2022-07-13 21:43:54,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:44:16,618 INFO L129 PetriNetUnfolder]: 38866/232369 cut-off events. [2022-07-13 21:44:16,619 INFO L130 PetriNetUnfolder]: For 31796/31796 co-relation queries the response was YES. [2022-07-13 21:44:17,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 293352 conditions, 232369 events. 38866/232369 cut-off events. For 31796/31796 co-relation queries the response was YES. Maximal size of possible extension queue 4324. Compared 4291911 event pairs, 7038 based on Foata normal form. 144467/342625 useless extension candidates. Maximal degree in co-relation 170533. Up to 35130 conditions per place. [2022-07-13 21:44:18,711 INFO L132 encePairwiseOnDemand]: 729/903 looper letters, 68 selfloop transitions, 48 changer transitions 0/663 dead transitions. [2022-07-13 21:44:18,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 663 transitions, 1611 flow [2022-07-13 21:44:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:44:18,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:44:18,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2040 transitions. [2022-07-13 21:44:18,719 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7530454042081949 [2022-07-13 21:44:18,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2040 transitions. [2022-07-13 21:44:18,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2040 transitions. [2022-07-13 21:44:18,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:44:18,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2040 transitions. [2022-07-13 21:44:18,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 680.0) internal successors, (2040), 3 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:44:18,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 903.0) internal successors, (3612), 4 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:44:18,732 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 903.0) internal successors, (3612), 4 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:44:18,732 INFO L186 Difference]: Start difference. First operand has 703 places, 903 transitions, 1838 flow. Second operand 3 states and 2040 transitions. [2022-07-13 21:44:18,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 663 transitions, 1611 flow [2022-07-13 21:44:18,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 663 transitions, 1593 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-07-13 21:44:18,752 INFO L242 Difference]: Finished difference. Result has 595 places, 660 transitions, 1436 flow [2022-07-13 21:44:18,753 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=903, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1436, PETRI_PLACES=595, PETRI_TRANSITIONS=660} [2022-07-13 21:44:18,755 INFO L279 CegarLoopForPetriNet]: 703 programPoint places, -108 predicate places. [2022-07-13 21:44:18,756 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 660 transitions, 1436 flow [2022-07-13 21:44:18,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 589.3333333333334) internal successors, (1768), 3 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:44:18,758 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:44:18,758 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] [2022-07-13 21:44:18,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:44:18,758 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 42 more)] === [2022-07-13 21:44:18,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:44:18,759 INFO L85 PathProgramCache]: Analyzing trace with hash -897917207, now seen corresponding path program 1 times [2022-07-13 21:44:18,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:44:18,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947182142] [2022-07-13 21:44:18,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:44:18,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:44:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:44:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:44:18,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:44:18,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947182142] [2022-07-13 21:44:18,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947182142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:44:18,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:44:18,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:44:18,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247683127] [2022-07-13 21:44:18,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:44:18,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:44:18,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:44:18,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:44:18,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:44:18,812 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 684 out of 903 [2022-07-13 21:44:18,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 660 transitions, 1436 flow. Second operand has 3 states, 3 states have (on average 685.6666666666666) internal successors, (2057), 3 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:44:18,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:44:18,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 684 of 903 [2022-07-13 21:44:18,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand