./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/queue.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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:12:25,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:12:25,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:12:25,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:12:25,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:12:25,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:12:25,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:12:25,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:12:25,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:12:25,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:12:25,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:12:25,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:12:25,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:12:25,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:12:25,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:12:25,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:12:25,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:12:25,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:12:25,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:12:25,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:12:25,970 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:12:25,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:12:25,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:12:25,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:12:25,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:12:25,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:12:25,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:12:25,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:12:25,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:12:25,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:12:25,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:12:25,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:12:25,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:12:25,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:12:25,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:12:25,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:12:25,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:12:25,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:12:25,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:12:25,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:12:25,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:12:25,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:12:25,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:12:26,022 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:12:26,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:12:26,023 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:12:26,023 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:12:26,024 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:12:26,024 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:12:26,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:12:26,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:12:26,025 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:12:26,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:12:26,026 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:12:26,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:12:26,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:12:26,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:12:26,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:12:26,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:12:26,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:12:26,027 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:12:26,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:12:26,029 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:12:26,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:12:26,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:12:26,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:12:26,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:12:26,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:12:26,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:12:26,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:12:26,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:12:26,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:12:26,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:12:26,031 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:12:26,031 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:12:26,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:12:26,031 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2022-07-22 21:12:26,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:12:26,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:12:26,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:12:26,256 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:12:26,257 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:12:26,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue.i [2022-07-22 21:12:26,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/022ab3196/6aca8fd5284c487e9e8507ae95537a86/FLAG89ff9ac43 [2022-07-22 21:12:26,839 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:12:26,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i [2022-07-22 21:12:26,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/022ab3196/6aca8fd5284c487e9e8507ae95537a86/FLAG89ff9ac43 [2022-07-22 21:12:27,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/022ab3196/6aca8fd5284c487e9e8507ae95537a86 [2022-07-22 21:12:27,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:12:27,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:12:27,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:12:27,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:12:27,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:12:27,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:12:27" (1/1) ... [2022-07-22 21:12:27,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5900b5f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:12:27, skipping insertion in model container [2022-07-22 21:12:27,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:12:27" (1/1) ... [2022-07-22 21:12:27,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:12:27,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:12:27,656 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/queue.i[43284,43297] [2022-07-22 21:12:27,667 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/queue.i[43491,43504] [2022-07-22 21:12:27,671 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/queue.i[43772,43785] [2022-07-22 21:12:27,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:12:27,687 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:12:27,749 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/queue.i[43284,43297] [2022-07-22 21:12:27,751 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/queue.i[43491,43504] [2022-07-22 21:12:27,755 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/queue.i[43772,43785] [2022-07-22 21:12:27,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:12:27,819 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:12:27,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:12:27 WrapperNode [2022-07-22 21:12:27,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:12:27,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:12:27,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:12:27,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:12:27,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:12:27" (1/1) ... [2022-07-22 21:12:27,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:12:27" (1/1) ... [2022-07-22 21:12:27,899 INFO L137 Inliner]: procedures = 274, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 244 [2022-07-22 21:12:27,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:12:27,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:12:27,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:12:27,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:12:27,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:12:27" (1/1) ... [2022-07-22 21:12:27,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:12:27" (1/1) ... [2022-07-22 21:12:27,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:12:27" (1/1) ... [2022-07-22 21:12:27,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:12:27" (1/1) ... [2022-07-22 21:12:27,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:12:27" (1/1) ... [2022-07-22 21:12:27,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:12:27" (1/1) ... [2022-07-22 21:12:27,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:12:27" (1/1) ... [2022-07-22 21:12:27,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:12:27,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:12:27,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:12:27,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:12:27,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:12:27" (1/1) ... [2022-07-22 21:12:27,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:12:27,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:12:27,976 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) [2022-07-22 21:12:28,000 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 [2022-07-22 21:12:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-07-22 21:12:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-07-22 21:12:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-07-22 21:12:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-07-22 21:12:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:12:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:12:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:12:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:12:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-22 21:12:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:12:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:12:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:12:28,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:12:28,019 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:12:28,157 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:12:28,158 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:12:28,419 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:12:28,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:12:28,428 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 21:12:28,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:12:28 BoogieIcfgContainer [2022-07-22 21:12:28,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:12:28,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:12:28,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:12:28,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:12:28,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:12:27" (1/3) ... [2022-07-22 21:12:28,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621c8c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:12:28, skipping insertion in model container [2022-07-22 21:12:28,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:12:27" (2/3) ... [2022-07-22 21:12:28,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621c8c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:12:28, skipping insertion in model container [2022-07-22 21:12:28,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:12:28" (3/3) ... [2022-07-22 21:12:28,437 INFO L111 eAbstractionObserver]: Analyzing ICFG queue.i [2022-07-22 21:12:28,441 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:12:28,448 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:12:28,448 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-22 21:12:28,448 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:12:28,516 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-22 21:12:28,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 266 places, 274 transitions, 564 flow [2022-07-22 21:12:28,629 INFO L129 PetriNetUnfolder]: 15/272 cut-off events. [2022-07-22 21:12:28,629 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:12:28,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 272 events. 15/272 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 360 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 198. Up to 2 conditions per place. [2022-07-22 21:12:28,640 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 274 transitions, 564 flow [2022-07-22 21:12:28,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 262 transitions, 533 flow [2022-07-22 21:12:28,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:12:28,669 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@342f3730, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@511d764e [2022-07-22 21:12:28,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-22 21:12:28,678 INFO L129 PetriNetUnfolder]: 1/64 cut-off events. [2022-07-22 21:12:28,678 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:12:28,679 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:12:28,679 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:12:28,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:12:28,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:12:28,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1738925689, now seen corresponding path program 1 times [2022-07-22 21:12:28,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:12:28,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264002592] [2022-07-22 21:12:28,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:12:28,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:12:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:12:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:12:28,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:12:28,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264002592] [2022-07-22 21:12:28,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264002592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:12:28,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:12:28,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:12:28,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645908211] [2022-07-22 21:12:28,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:12:28,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:12:28,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:12:28,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:12:28,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:12:28,943 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 274 [2022-07-22 21:12:28,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 262 transitions, 533 flow. Second operand has 2 states, 2 states have (on average 261.5) internal successors, (523), 2 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:28,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:12:28,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 274 [2022-07-22 21:12:28,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:12:29,039 INFO L129 PetriNetUnfolder]: 10/251 cut-off events. [2022-07-22 21:12:29,040 INFO L130 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-07-22 21:12:29,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 251 events. 10/251 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 283 event pairs, 0 based on Foata normal form. 7/246 useless extension candidates. Maximal degree in co-relation 191. Up to 4 conditions per place. [2022-07-22 21:12:29,045 INFO L132 encePairwiseOnDemand]: 269/274 looper letters, 3 selfloop transitions, 0 changer transitions 0/251 dead transitions. [2022-07-22 21:12:29,045 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 251 transitions, 517 flow [2022-07-22 21:12:29,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:12:29,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:12:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 530 transitions. [2022-07-22 21:12:29,057 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9671532846715328 [2022-07-22 21:12:29,058 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 530 transitions. [2022-07-22 21:12:29,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 530 transitions. [2022-07-22 21:12:29,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:12:29,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 530 transitions. [2022-07-22 21:12:29,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 265.0) internal successors, (530), 2 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:29,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:29,077 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:29,079 INFO L186 Difference]: Start difference. First operand has 254 places, 262 transitions, 533 flow. Second operand 2 states and 530 transitions. [2022-07-22 21:12:29,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 251 transitions, 517 flow [2022-07-22 21:12:29,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 251 transitions, 512 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-22 21:12:29,089 INFO L242 Difference]: Finished difference. Result has 246 places, 251 transitions, 506 flow [2022-07-22 21:12:29,091 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=506, PETRI_PLACES=246, PETRI_TRANSITIONS=251} [2022-07-22 21:12:29,097 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, -8 predicate places. [2022-07-22 21:12:29,098 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 251 transitions, 506 flow [2022-07-22 21:12:29,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 261.5) internal successors, (523), 2 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:29,098 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:12:29,099 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:12:29,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:12:29,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:12:29,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:12:29,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1729238147, now seen corresponding path program 1 times [2022-07-22 21:12:29,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:12:29,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095400450] [2022-07-22 21:12:29,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:12:29,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:12:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:12:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:12:29,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:12:29,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095400450] [2022-07-22 21:12:29,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095400450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:12:29,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:12:29,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 21:12:29,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775839933] [2022-07-22 21:12:29,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:12:29,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 21:12:29,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:12:29,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 21:12:29,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-22 21:12:29,495 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 274 [2022-07-22 21:12:29,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 251 transitions, 506 flow. Second operand has 12 states, 12 states have (on average 199.75) internal successors, (2397), 12 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:29,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:12:29,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 274 [2022-07-22 21:12:29,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:12:30,482 INFO L129 PetriNetUnfolder]: 1003/4117 cut-off events. [2022-07-22 21:12:30,482 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-07-22 21:12:30,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5628 conditions, 4117 events. 1003/4117 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 33918 event pairs, 789 based on Foata normal form. 0/3832 useless extension candidates. Maximal degree in co-relation 5625. Up to 1435 conditions per place. [2022-07-22 21:12:30,510 INFO L132 encePairwiseOnDemand]: 261/274 looper letters, 52 selfloop transitions, 12 changer transitions 0/247 dead transitions. [2022-07-22 21:12:30,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 247 transitions, 626 flow [2022-07-22 21:12:30,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:12:30,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:12:30,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2626 transitions. [2022-07-22 21:12:30,518 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7372262773722628 [2022-07-22 21:12:30,519 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2626 transitions. [2022-07-22 21:12:30,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2626 transitions. [2022-07-22 21:12:30,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:12:30,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2626 transitions. [2022-07-22 21:12:30,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 202.0) internal successors, (2626), 13 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:30,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 274.0) internal successors, (3836), 14 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:30,535 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 274.0) internal successors, (3836), 14 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:30,535 INFO L186 Difference]: Start difference. First operand has 246 places, 251 transitions, 506 flow. Second operand 13 states and 2626 transitions. [2022-07-22 21:12:30,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 247 transitions, 626 flow [2022-07-22 21:12:30,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 247 transitions, 626 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:12:30,545 INFO L242 Difference]: Finished difference. Result has 255 places, 247 transitions, 522 flow [2022-07-22 21:12:30,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=522, PETRI_PLACES=255, PETRI_TRANSITIONS=247} [2022-07-22 21:12:30,547 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 1 predicate places. [2022-07-22 21:12:30,547 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 247 transitions, 522 flow [2022-07-22 21:12:30,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 199.75) internal successors, (2397), 12 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:30,549 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:12:30,549 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:12:30,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:12:30,550 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:12:30,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:12:30,551 INFO L85 PathProgramCache]: Analyzing trace with hash -718598690, now seen corresponding path program 1 times [2022-07-22 21:12:30,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:12:30,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631049272] [2022-07-22 21:12:30,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:12:30,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:12:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:12:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:12:30,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:12:30,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631049272] [2022-07-22 21:12:30,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631049272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:12:30,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:12:30,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:12:30,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497850261] [2022-07-22 21:12:30,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:12:30,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:12:30,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:12:30,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:12:30,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:12:30,665 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 274 [2022-07-22 21:12:30,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 247 transitions, 522 flow. Second operand has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:30,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:12:30,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 274 [2022-07-22 21:12:30,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:12:30,767 INFO L129 PetriNetUnfolder]: 26/432 cut-off events. [2022-07-22 21:12:30,767 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:12:30,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 432 events. 26/432 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1082 event pairs, 2 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 495. Up to 13 conditions per place. [2022-07-22 21:12:30,770 INFO L132 encePairwiseOnDemand]: 268/274 looper letters, 9 selfloop transitions, 5 changer transitions 0/247 dead transitions. [2022-07-22 21:12:30,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 247 transitions, 554 flow [2022-07-22 21:12:30,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:12:30,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:12:30,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1015 transitions. [2022-07-22 21:12:30,775 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.926094890510949 [2022-07-22 21:12:30,775 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1015 transitions. [2022-07-22 21:12:30,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1015 transitions. [2022-07-22 21:12:30,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:12:30,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1015 transitions. [2022-07-22 21:12:30,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:30,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 274.0) internal successors, (1370), 5 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:30,781 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 274.0) internal successors, (1370), 5 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:30,782 INFO L186 Difference]: Start difference. First operand has 255 places, 247 transitions, 522 flow. Second operand 4 states and 1015 transitions. [2022-07-22 21:12:30,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 247 transitions, 554 flow [2022-07-22 21:12:30,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 247 transitions, 531 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-07-22 21:12:30,786 INFO L242 Difference]: Finished difference. Result has 246 places, 245 transitions, 505 flow [2022-07-22 21:12:30,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=505, PETRI_PLACES=246, PETRI_TRANSITIONS=245} [2022-07-22 21:12:30,788 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, -8 predicate places. [2022-07-22 21:12:30,789 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 245 transitions, 505 flow [2022-07-22 21:12:30,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:30,790 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:12:30,790 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:12:30,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:12:30,790 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:12:30,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:12:30,791 INFO L85 PathProgramCache]: Analyzing trace with hash 262167032, now seen corresponding path program 1 times [2022-07-22 21:12:30,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:12:30,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823973535] [2022-07-22 21:12:30,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:12:30,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:12:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:12:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:12:30,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:12:30,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823973535] [2022-07-22 21:12:30,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823973535] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:12:30,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:12:30,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:12:30,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411653251] [2022-07-22 21:12:30,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:12:30,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:12:30,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:12:30,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:12:30,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:12:30,879 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 274 [2022-07-22 21:12:30,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 245 transitions, 505 flow. Second operand has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:30,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:12:30,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 274 [2022-07-22 21:12:30,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:12:30,950 INFO L129 PetriNetUnfolder]: 33/527 cut-off events. [2022-07-22 21:12:30,951 INFO L130 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-07-22 21:12:30,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 527 events. 33/527 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1265 event pairs, 2 based on Foata normal form. 0/493 useless extension candidates. Maximal degree in co-relation 582. Up to 23 conditions per place. [2022-07-22 21:12:30,954 INFO L132 encePairwiseOnDemand]: 270/274 looper letters, 10 selfloop transitions, 3 changer transitions 0/249 dead transitions. [2022-07-22 21:12:30,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 249 transitions, 542 flow [2022-07-22 21:12:30,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:12:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:12:30,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 779 transitions. [2022-07-22 21:12:30,957 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9476885644768857 [2022-07-22 21:12:30,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 779 transitions. [2022-07-22 21:12:30,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 779 transitions. [2022-07-22 21:12:30,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:12:30,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 779 transitions. [2022-07-22 21:12:30,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:30,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:30,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:30,963 INFO L186 Difference]: Start difference. First operand has 246 places, 245 transitions, 505 flow. Second operand 3 states and 779 transitions. [2022-07-22 21:12:30,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 249 transitions, 542 flow [2022-07-22 21:12:30,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 249 transitions, 532 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-22 21:12:30,967 INFO L242 Difference]: Finished difference. Result has 246 places, 246 transitions, 510 flow [2022-07-22 21:12:30,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=510, PETRI_PLACES=246, PETRI_TRANSITIONS=246} [2022-07-22 21:12:30,968 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, -8 predicate places. [2022-07-22 21:12:30,969 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 246 transitions, 510 flow [2022-07-22 21:12:30,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:30,969 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:12:30,969 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:12:30,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:12:30,970 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:12:30,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:12:30,970 INFO L85 PathProgramCache]: Analyzing trace with hash -63793281, now seen corresponding path program 1 times [2022-07-22 21:12:30,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:12:30,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903951563] [2022-07-22 21:12:30,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:12:30,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:12:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:12:31,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:12:31,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:12:31,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903951563] [2022-07-22 21:12:31,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903951563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:12:31,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:12:31,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:12:31,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163243539] [2022-07-22 21:12:31,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:12:31,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:12:31,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:12:31,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:12:31,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:12:31,032 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 274 [2022-07-22 21:12:31,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 246 transitions, 510 flow. Second operand has 4 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:31,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:12:31,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 274 [2022-07-22 21:12:31,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:12:31,156 INFO L129 PetriNetUnfolder]: 51/836 cut-off events. [2022-07-22 21:12:31,156 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-07-22 21:12:31,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 945 conditions, 836 events. 51/836 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3021 event pairs, 7 based on Foata normal form. 0/788 useless extension candidates. Maximal degree in co-relation 940. Up to 27 conditions per place. [2022-07-22 21:12:31,162 INFO L132 encePairwiseOnDemand]: 269/274 looper letters, 15 selfloop transitions, 5 changer transitions 0/254 dead transitions. [2022-07-22 21:12:31,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 254 transitions, 573 flow [2022-07-22 21:12:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:12:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:12:31,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1281 transitions. [2022-07-22 21:12:31,166 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.935036496350365 [2022-07-22 21:12:31,166 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1281 transitions. [2022-07-22 21:12:31,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1281 transitions. [2022-07-22 21:12:31,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:12:31,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1281 transitions. [2022-07-22 21:12:31,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 256.2) internal successors, (1281), 5 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:31,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:31,174 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:31,174 INFO L186 Difference]: Start difference. First operand has 246 places, 246 transitions, 510 flow. Second operand 5 states and 1281 transitions. [2022-07-22 21:12:31,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 254 transitions, 573 flow [2022-07-22 21:12:31,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 254 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:12:31,179 INFO L242 Difference]: Finished difference. Result has 252 places, 249 transitions, 537 flow [2022-07-22 21:12:31,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=537, PETRI_PLACES=252, PETRI_TRANSITIONS=249} [2022-07-22 21:12:31,182 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, -2 predicate places. [2022-07-22 21:12:31,182 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 249 transitions, 537 flow [2022-07-22 21:12:31,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:31,182 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:12:31,183 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:12:31,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:12:31,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:12:31,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:12:31,184 INFO L85 PathProgramCache]: Analyzing trace with hash -836569327, now seen corresponding path program 1 times [2022-07-22 21:12:31,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:12:31,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105127577] [2022-07-22 21:12:31,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:12:31,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:12:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:12:31,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:12:31,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:12:31,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105127577] [2022-07-22 21:12:31,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105127577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:12:31,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:12:31,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-22 21:12:31,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854923356] [2022-07-22 21:12:31,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:12:31,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 21:12:31,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:12:31,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 21:12:31,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-07-22 21:12:31,560 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 274 [2022-07-22 21:12:31,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 249 transitions, 537 flow. Second operand has 17 states, 17 states have (on average 187.41176470588235) internal successors, (3186), 17 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:31,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:12:31,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 274 [2022-07-22 21:12:31,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:12:33,063 INFO L129 PetriNetUnfolder]: 1599/6669 cut-off events. [2022-07-22 21:12:33,063 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-07-22 21:12:33,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9623 conditions, 6669 events. 1599/6669 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 58356 event pairs, 1290 based on Foata normal form. 0/6318 useless extension candidates. Maximal degree in co-relation 9616. Up to 2556 conditions per place. [2022-07-22 21:12:33,105 INFO L132 encePairwiseOnDemand]: 258/274 looper letters, 79 selfloop transitions, 20 changer transitions 0/271 dead transitions. [2022-07-22 21:12:33,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 271 transitions, 781 flow [2022-07-22 21:12:33,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 21:12:33,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-22 21:12:33,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2876 transitions. [2022-07-22 21:12:33,143 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6997566909975669 [2022-07-22 21:12:33,143 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2876 transitions. [2022-07-22 21:12:33,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2876 transitions. [2022-07-22 21:12:33,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:12:33,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2876 transitions. [2022-07-22 21:12:33,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 191.73333333333332) internal successors, (2876), 15 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:33,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:33,157 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:33,157 INFO L186 Difference]: Start difference. First operand has 252 places, 249 transitions, 537 flow. Second operand 15 states and 2876 transitions. [2022-07-22 21:12:33,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 271 transitions, 781 flow [2022-07-22 21:12:33,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 271 transitions, 781 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:12:33,163 INFO L242 Difference]: Finished difference. Result has 272 places, 262 transitions, 644 flow [2022-07-22 21:12:33,164 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=644, PETRI_PLACES=272, PETRI_TRANSITIONS=262} [2022-07-22 21:12:33,164 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 18 predicate places. [2022-07-22 21:12:33,164 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 262 transitions, 644 flow [2022-07-22 21:12:33,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 187.41176470588235) internal successors, (3186), 17 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:33,166 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:12:33,166 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:12:33,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:12:33,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:12:33,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:12:33,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1663669004, now seen corresponding path program 1 times [2022-07-22 21:12:33,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:12:33,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323376795] [2022-07-22 21:12:33,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:12:33,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:12:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:12:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:12:34,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:12:34,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323376795] [2022-07-22 21:12:34,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323376795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:12:34,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:12:34,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-22 21:12:34,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564346138] [2022-07-22 21:12:34,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:12:34,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-22 21:12:34,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:12:34,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-22 21:12:34,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-07-22 21:12:34,291 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 274 [2022-07-22 21:12:34,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 262 transitions, 644 flow. Second operand has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:34,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:12:34,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 274 [2022-07-22 21:12:34,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:12:37,416 INFO L129 PetriNetUnfolder]: 1457/6029 cut-off events. [2022-07-22 21:12:37,416 INFO L130 PetriNetUnfolder]: For 117/120 co-relation queries the response was YES. [2022-07-22 21:12:37,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8866 conditions, 6029 events. 1457/6029 cut-off events. For 117/120 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 51353 event pairs, 1160 based on Foata normal form. 2/5754 useless extension candidates. Maximal degree in co-relation 8852. Up to 2311 conditions per place. [2022-07-22 21:12:37,456 INFO L132 encePairwiseOnDemand]: 244/274 looper letters, 89 selfloop transitions, 43 changer transitions 0/296 dead transitions. [2022-07-22 21:12:37,457 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 296 transitions, 998 flow [2022-07-22 21:12:37,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-22 21:12:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-22 21:12:37,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4605 transitions. [2022-07-22 21:12:37,466 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6464065131948343 [2022-07-22 21:12:37,466 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4605 transitions. [2022-07-22 21:12:37,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4605 transitions. [2022-07-22 21:12:37,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:12:37,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4605 transitions. [2022-07-22 21:12:37,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 177.1153846153846) internal successors, (4605), 26 states have internal predecessors, (4605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:37,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 274.0) internal successors, (7398), 27 states have internal predecessors, (7398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:37,490 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 274.0) internal successors, (7398), 27 states have internal predecessors, (7398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:37,490 INFO L186 Difference]: Start difference. First operand has 272 places, 262 transitions, 644 flow. Second operand 26 states and 4605 transitions. [2022-07-22 21:12:37,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 296 transitions, 998 flow [2022-07-22 21:12:37,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 296 transitions, 985 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-22 21:12:37,497 INFO L242 Difference]: Finished difference. Result has 301 places, 282 transitions, 854 flow [2022-07-22 21:12:37,498 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=854, PETRI_PLACES=301, PETRI_TRANSITIONS=282} [2022-07-22 21:12:37,499 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 47 predicate places. [2022-07-22 21:12:37,499 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 282 transitions, 854 flow [2022-07-22 21:12:37,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:37,501 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:12:37,501 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:12:37,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:12:37,501 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:12:37,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:12:37,502 INFO L85 PathProgramCache]: Analyzing trace with hash -166761329, now seen corresponding path program 1 times [2022-07-22 21:12:37,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:12:37,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560538711] [2022-07-22 21:12:37,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:12:37,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:12:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:12:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:12:38,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:12:38,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560538711] [2022-07-22 21:12:38,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560538711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:12:38,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:12:38,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:12:38,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625760235] [2022-07-22 21:12:38,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:12:38,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:12:38,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:12:38,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:12:38,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:12:38,224 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 274 [2022-07-22 21:12:38,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 282 transitions, 854 flow. Second operand has 18 states, 18 states have (on average 176.83333333333334) internal successors, (3183), 18 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:38,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:12:38,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 274 [2022-07-22 21:12:38,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:12:40,190 INFO L129 PetriNetUnfolder]: 1619/6777 cut-off events. [2022-07-22 21:12:40,190 INFO L130 PetriNetUnfolder]: For 394/398 co-relation queries the response was YES. [2022-07-22 21:12:40,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10234 conditions, 6777 events. 1619/6777 cut-off events. For 394/398 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 59246 event pairs, 734 based on Foata normal form. 3/6433 useless extension candidates. Maximal degree in co-relation 10209. Up to 2470 conditions per place. [2022-07-22 21:12:40,238 INFO L132 encePairwiseOnDemand]: 253/274 looper letters, 115 selfloop transitions, 34 changer transitions 0/318 dead transitions. [2022-07-22 21:12:40,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 318 transitions, 1264 flow [2022-07-22 21:12:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:12:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:12:40,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2913 transitions. [2022-07-22 21:12:40,244 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6644616788321168 [2022-07-22 21:12:40,244 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2913 transitions. [2022-07-22 21:12:40,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2913 transitions. [2022-07-22 21:12:40,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:12:40,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2913 transitions. [2022-07-22 21:12:40,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 182.0625) internal successors, (2913), 16 states have internal predecessors, (2913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:40,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 274.0) internal successors, (4658), 17 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:40,257 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 274.0) internal successors, (4658), 17 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:40,257 INFO L186 Difference]: Start difference. First operand has 301 places, 282 transitions, 854 flow. Second operand 16 states and 2913 transitions. [2022-07-22 21:12:40,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 318 transitions, 1264 flow [2022-07-22 21:12:40,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 318 transitions, 1223 flow, removed 7 selfloop flow, removed 12 redundant places. [2022-07-22 21:12:40,266 INFO L242 Difference]: Finished difference. Result has 309 places, 292 transitions, 980 flow [2022-07-22 21:12:40,267 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=980, PETRI_PLACES=309, PETRI_TRANSITIONS=292} [2022-07-22 21:12:40,268 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 55 predicate places. [2022-07-22 21:12:40,268 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 292 transitions, 980 flow [2022-07-22 21:12:40,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 176.83333333333334) internal successors, (3183), 18 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:40,269 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:12:40,269 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:12:40,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:12:40,269 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:12:40,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:12:40,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1319266727, now seen corresponding path program 2 times [2022-07-22 21:12:40,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:12:40,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151534294] [2022-07-22 21:12:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:12:40,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:12:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:12:40,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:12:40,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:12:40,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151534294] [2022-07-22 21:12:40,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151534294] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:12:40,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:12:40,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:12:40,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025428593] [2022-07-22 21:12:40,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:12:40,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:12:40,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:12:40,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:12:40,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:12:40,993 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 274 [2022-07-22 21:12:40,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 292 transitions, 980 flow. Second operand has 18 states, 18 states have (on average 176.83333333333334) internal successors, (3183), 18 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:40,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:12:40,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 274 [2022-07-22 21:12:40,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:12:43,266 INFO L129 PetriNetUnfolder]: 1640/6855 cut-off events. [2022-07-22 21:12:43,266 INFO L130 PetriNetUnfolder]: For 650/654 co-relation queries the response was YES. [2022-07-22 21:12:43,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10573 conditions, 6855 events. 1640/6855 cut-off events. For 650/654 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 59957 event pairs, 735 based on Foata normal form. 3/6511 useless extension candidates. Maximal degree in co-relation 10543. Up to 2475 conditions per place. [2022-07-22 21:12:43,317 INFO L132 encePairwiseOnDemand]: 254/274 looper letters, 116 selfloop transitions, 38 changer transitions 0/323 dead transitions. [2022-07-22 21:12:43,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 323 transitions, 1409 flow [2022-07-22 21:12:43,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 21:12:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-22 21:12:43,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2737 transitions. [2022-07-22 21:12:43,324 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6659367396593674 [2022-07-22 21:12:43,324 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2737 transitions. [2022-07-22 21:12:43,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2737 transitions. [2022-07-22 21:12:43,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:12:43,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2737 transitions. [2022-07-22 21:12:43,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 182.46666666666667) internal successors, (2737), 15 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:43,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:43,337 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:43,337 INFO L186 Difference]: Start difference. First operand has 309 places, 292 transitions, 980 flow. Second operand 15 states and 2737 transitions. [2022-07-22 21:12:43,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 323 transitions, 1409 flow [2022-07-22 21:12:43,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 323 transitions, 1377 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-07-22 21:12:43,346 INFO L242 Difference]: Finished difference. Result has 317 places, 298 transitions, 1126 flow [2022-07-22 21:12:43,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1126, PETRI_PLACES=317, PETRI_TRANSITIONS=298} [2022-07-22 21:12:43,348 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 63 predicate places. [2022-07-22 21:12:43,348 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 298 transitions, 1126 flow [2022-07-22 21:12:43,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 176.83333333333334) internal successors, (3183), 18 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:43,349 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:12:43,349 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:12:43,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:12:43,349 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:12:43,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:12:43,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1981120671, now seen corresponding path program 3 times [2022-07-22 21:12:43,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:12:43,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971755264] [2022-07-22 21:12:43,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:12:43,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:12:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:12:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:12:43,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:12:43,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971755264] [2022-07-22 21:12:43,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971755264] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:12:43,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:12:43,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:12:43,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634569075] [2022-07-22 21:12:43,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:12:43,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:12:43,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:12:43,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:12:43,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:12:43,910 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 274 [2022-07-22 21:12:43,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 298 transitions, 1126 flow. Second operand has 18 states, 18 states have (on average 176.83333333333334) internal successors, (3183), 18 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:43,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:12:43,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 274 [2022-07-22 21:12:43,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:12:45,401 INFO L129 PetriNetUnfolder]: 1625/6840 cut-off events. [2022-07-22 21:12:45,401 INFO L130 PetriNetUnfolder]: For 1089/1093 co-relation queries the response was YES. [2022-07-22 21:12:45,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10638 conditions, 6840 events. 1625/6840 cut-off events. For 1089/1093 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 60054 event pairs, 741 based on Foata normal form. 6/6497 useless extension candidates. Maximal degree in co-relation 10605. Up to 2414 conditions per place. [2022-07-22 21:12:45,524 INFO L132 encePairwiseOnDemand]: 257/274 looper letters, 99 selfloop transitions, 36 changer transitions 0/304 dead transitions. [2022-07-22 21:12:45,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 304 transitions, 1404 flow [2022-07-22 21:12:45,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 21:12:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-22 21:12:45,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2535 transitions. [2022-07-22 21:12:45,530 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6608446298227321 [2022-07-22 21:12:45,531 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2535 transitions. [2022-07-22 21:12:45,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2535 transitions. [2022-07-22 21:12:45,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:12:45,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2535 transitions. [2022-07-22 21:12:45,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 181.07142857142858) internal successors, (2535), 14 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:45,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 274.0) internal successors, (4110), 15 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:45,543 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 274.0) internal successors, (4110), 15 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:45,543 INFO L186 Difference]: Start difference. First operand has 317 places, 298 transitions, 1126 flow. Second operand 14 states and 2535 transitions. [2022-07-22 21:12:45,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 304 transitions, 1404 flow [2022-07-22 21:12:45,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 304 transitions, 1368 flow, removed 4 selfloop flow, removed 11 redundant places. [2022-07-22 21:12:45,553 INFO L242 Difference]: Finished difference. Result has 317 places, 294 transitions, 1140 flow [2022-07-22 21:12:45,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1140, PETRI_PLACES=317, PETRI_TRANSITIONS=294} [2022-07-22 21:12:45,555 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 63 predicate places. [2022-07-22 21:12:45,555 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 294 transitions, 1140 flow [2022-07-22 21:12:45,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 176.83333333333334) internal successors, (3183), 18 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:45,556 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:12:45,556 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:12:45,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:12:45,557 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:12:45,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:12:45,557 INFO L85 PathProgramCache]: Analyzing trace with hash 750983562, now seen corresponding path program 1 times [2022-07-22 21:12:45,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:12:45,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898684453] [2022-07-22 21:12:45,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:12:45,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:12:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:12:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:12:46,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:12:46,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898684453] [2022-07-22 21:12:46,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898684453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:12:46,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:12:46,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-07-22 21:12:46,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646762757] [2022-07-22 21:12:46,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:12:46,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-22 21:12:46,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:12:46,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-22 21:12:46,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2022-07-22 21:12:46,862 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 274 [2022-07-22 21:12:46,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 294 transitions, 1140 flow. Second operand has 29 states, 29 states have (on average 163.13793103448276) internal successors, (4731), 29 states have internal predecessors, (4731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:46,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:12:46,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 274 [2022-07-22 21:12:46,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:12:49,730 INFO L129 PetriNetUnfolder]: 847/3524 cut-off events. [2022-07-22 21:12:49,730 INFO L130 PetriNetUnfolder]: For 1153/1156 co-relation queries the response was YES. [2022-07-22 21:12:49,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 3524 events. 847/3524 cut-off events. For 1153/1156 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 24817 event pairs, 336 based on Foata normal form. 3/3355 useless extension candidates. Maximal degree in co-relation 5898. Up to 1081 conditions per place. [2022-07-22 21:12:49,751 INFO L132 encePairwiseOnDemand]: 245/274 looper letters, 121 selfloop transitions, 51 changer transitions 0/319 dead transitions. [2022-07-22 21:12:49,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 319 transitions, 1555 flow [2022-07-22 21:12:49,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-22 21:12:49,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-22 21:12:49,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4489 transitions. [2022-07-22 21:12:49,757 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6067856177345229 [2022-07-22 21:12:49,757 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4489 transitions. [2022-07-22 21:12:49,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4489 transitions. [2022-07-22 21:12:49,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:12:49,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4489 transitions. [2022-07-22 21:12:49,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 166.25925925925927) internal successors, (4489), 27 states have internal predecessors, (4489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:49,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 274.0) internal successors, (7672), 28 states have internal predecessors, (7672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:49,772 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 274.0) internal successors, (7672), 28 states have internal predecessors, (7672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:49,772 INFO L186 Difference]: Start difference. First operand has 317 places, 294 transitions, 1140 flow. Second operand 27 states and 4489 transitions. [2022-07-22 21:12:49,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 319 transitions, 1555 flow [2022-07-22 21:12:49,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 319 transitions, 1463 flow, removed 1 selfloop flow, removed 21 redundant places. [2022-07-22 21:12:49,782 INFO L242 Difference]: Finished difference. Result has 316 places, 285 transitions, 1134 flow [2022-07-22 21:12:49,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1134, PETRI_PLACES=316, PETRI_TRANSITIONS=285} [2022-07-22 21:12:49,783 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 62 predicate places. [2022-07-22 21:12:49,783 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 285 transitions, 1134 flow [2022-07-22 21:12:49,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 163.13793103448276) internal successors, (4731), 29 states have internal predecessors, (4731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:49,784 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:12:49,785 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:12:49,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:12:49,785 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:12:49,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:12:49,785 INFO L85 PathProgramCache]: Analyzing trace with hash -651310313, now seen corresponding path program 1 times [2022-07-22 21:12:49,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:12:49,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145925005] [2022-07-22 21:12:49,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:12:49,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:12:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:12:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:12:49,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:12:49,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145925005] [2022-07-22 21:12:49,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145925005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:12:49,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:12:49,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:12:49,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518230427] [2022-07-22 21:12:49,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:12:49,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:12:49,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:12:49,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:12:49,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:12:49,844 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 274 [2022-07-22 21:12:49,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 285 transitions, 1134 flow. Second operand has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:49,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:12:49,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 274 [2022-07-22 21:12:49,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:12:49,962 INFO L129 PetriNetUnfolder]: 61/910 cut-off events. [2022-07-22 21:12:49,962 INFO L130 PetriNetUnfolder]: For 529/530 co-relation queries the response was YES. [2022-07-22 21:12:49,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1473 conditions, 910 events. 61/910 cut-off events. For 529/530 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3735 event pairs, 7 based on Foata normal form. 18/883 useless extension candidates. Maximal degree in co-relation 1444. Up to 39 conditions per place. [2022-07-22 21:12:49,968 INFO L132 encePairwiseOnDemand]: 268/274 looper letters, 12 selfloop transitions, 6 changer transitions 0/287 dead transitions. [2022-07-22 21:12:49,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 287 transitions, 1177 flow [2022-07-22 21:12:49,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:12:49,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:12:49,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 765 transitions. [2022-07-22 21:12:49,970 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9306569343065694 [2022-07-22 21:12:49,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 765 transitions. [2022-07-22 21:12:49,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 765 transitions. [2022-07-22 21:12:49,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:12:49,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 765 transitions. [2022-07-22 21:12:49,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:49,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:49,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:49,973 INFO L186 Difference]: Start difference. First operand has 316 places, 285 transitions, 1134 flow. Second operand 3 states and 765 transitions. [2022-07-22 21:12:49,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 287 transitions, 1177 flow [2022-07-22 21:12:49,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 287 transitions, 1087 flow, removed 0 selfloop flow, removed 23 redundant places. [2022-07-22 21:12:49,981 INFO L242 Difference]: Finished difference. Result has 295 places, 285 transitions, 1056 flow [2022-07-22 21:12:49,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1056, PETRI_PLACES=295, PETRI_TRANSITIONS=285} [2022-07-22 21:12:49,983 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 41 predicate places. [2022-07-22 21:12:49,983 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 285 transitions, 1056 flow [2022-07-22 21:12:49,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:49,983 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:12:49,983 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:12:49,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:12:49,984 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:12:49,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:12:49,984 INFO L85 PathProgramCache]: Analyzing trace with hash 380125886, now seen corresponding path program 1 times [2022-07-22 21:12:49,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:12:49,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927803299] [2022-07-22 21:12:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:12:49,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:12:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:12:50,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:12:50,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:12:50,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927803299] [2022-07-22 21:12:50,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927803299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:12:50,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:12:50,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-07-22 21:12:50,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137954877] [2022-07-22 21:12:50,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:12:50,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-22 21:12:50,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:12:50,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-22 21:12:50,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2022-07-22 21:12:51,002 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 274 [2022-07-22 21:12:51,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 285 transitions, 1056 flow. Second operand has 30 states, 30 states have (on average 167.66666666666666) internal successors, (5030), 30 states have internal predecessors, (5030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:51,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:12:51,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 274 [2022-07-22 21:12:51,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:12:53,700 INFO L129 PetriNetUnfolder]: 533/2476 cut-off events. [2022-07-22 21:12:53,700 INFO L130 PetriNetUnfolder]: For 1098/1102 co-relation queries the response was YES. [2022-07-22 21:12:53,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4907 conditions, 2476 events. 533/2476 cut-off events. For 1098/1102 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 15420 event pairs, 69 based on Foata normal form. 0/2376 useless extension candidates. Maximal degree in co-relation 4878. Up to 433 conditions per place. [2022-07-22 21:12:53,717 INFO L132 encePairwiseOnDemand]: 239/274 looper letters, 160 selfloop transitions, 73 changer transitions 0/378 dead transitions. [2022-07-22 21:12:53,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 378 transitions, 1798 flow [2022-07-22 21:12:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 21:12:53,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-22 21:12:53,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5477 transitions. [2022-07-22 21:12:53,730 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6246578467153284 [2022-07-22 21:12:53,730 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5477 transitions. [2022-07-22 21:12:53,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5477 transitions. [2022-07-22 21:12:53,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:12:53,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5477 transitions. [2022-07-22 21:12:53,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 171.15625) internal successors, (5477), 32 states have internal predecessors, (5477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:53,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 274.0) internal successors, (9042), 33 states have internal predecessors, (9042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:53,750 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 274.0) internal successors, (9042), 33 states have internal predecessors, (9042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:53,750 INFO L186 Difference]: Start difference. First operand has 295 places, 285 transitions, 1056 flow. Second operand 32 states and 5477 transitions. [2022-07-22 21:12:53,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 378 transitions, 1798 flow [2022-07-22 21:12:53,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 378 transitions, 1792 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:12:53,766 INFO L242 Difference]: Finished difference. Result has 332 places, 308 transitions, 1350 flow [2022-07-22 21:12:53,766 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1350, PETRI_PLACES=332, PETRI_TRANSITIONS=308} [2022-07-22 21:12:53,767 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 78 predicate places. [2022-07-22 21:12:53,767 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 308 transitions, 1350 flow [2022-07-22 21:12:53,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 167.66666666666666) internal successors, (5030), 30 states have internal predecessors, (5030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:53,768 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:12:53,769 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:12:53,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 21:12:53,769 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:12:53,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:12:53,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1707383024, now seen corresponding path program 2 times [2022-07-22 21:12:53,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:12:53,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230328734] [2022-07-22 21:12:53,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:12:53,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:12:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:12:55,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:12:55,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:12:55,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230328734] [2022-07-22 21:12:55,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230328734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:12:55,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:12:55,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-07-22 21:12:55,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068984073] [2022-07-22 21:12:55,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:12:55,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-22 21:12:55,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:12:55,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-22 21:12:55,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1322, Unknown=0, NotChecked=0, Total=1482 [2022-07-22 21:12:55,828 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 274 [2022-07-22 21:12:55,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 308 transitions, 1350 flow. Second operand has 39 states, 39 states have (on average 155.23076923076923) internal successors, (6054), 39 states have internal predecessors, (6054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:12:55,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:12:55,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 274 [2022-07-22 21:12:55,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:13:01,079 INFO L129 PetriNetUnfolder]: 672/3028 cut-off events. [2022-07-22 21:13:01,079 INFO L130 PetriNetUnfolder]: For 1956/1967 co-relation queries the response was YES. [2022-07-22 21:13:01,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6453 conditions, 3028 events. 672/3028 cut-off events. For 1956/1967 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 20583 event pairs, 71 based on Foata normal form. 0/2914 useless extension candidates. Maximal degree in co-relation 6416. Up to 419 conditions per place. [2022-07-22 21:13:01,100 INFO L132 encePairwiseOnDemand]: 228/274 looper letters, 181 selfloop transitions, 94 changer transitions 0/411 dead transitions. [2022-07-22 21:13:01,100 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 411 transitions, 2218 flow [2022-07-22 21:13:01,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-22 21:13:01,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-07-22 21:13:01,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7109 transitions. [2022-07-22 21:13:01,110 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5765612327656123 [2022-07-22 21:13:01,110 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7109 transitions. [2022-07-22 21:13:01,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7109 transitions. [2022-07-22 21:13:01,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:13:01,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7109 transitions. [2022-07-22 21:13:01,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 157.9777777777778) internal successors, (7109), 45 states have internal predecessors, (7109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:01,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 274.0) internal successors, (12604), 46 states have internal predecessors, (12604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:01,134 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 274.0) internal successors, (12604), 46 states have internal predecessors, (12604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:01,134 INFO L186 Difference]: Start difference. First operand has 332 places, 308 transitions, 1350 flow. Second operand 45 states and 7109 transitions. [2022-07-22 21:13:01,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 411 transitions, 2218 flow [2022-07-22 21:13:01,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 411 transitions, 2109 flow, removed 8 selfloop flow, removed 19 redundant places. [2022-07-22 21:13:01,152 INFO L242 Difference]: Finished difference. Result has 366 places, 330 transitions, 1595 flow [2022-07-22 21:13:01,152 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1595, PETRI_PLACES=366, PETRI_TRANSITIONS=330} [2022-07-22 21:13:01,153 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 112 predicate places. [2022-07-22 21:13:01,153 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 330 transitions, 1595 flow [2022-07-22 21:13:01,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 155.23076923076923) internal successors, (6054), 39 states have internal predecessors, (6054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:01,154 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:13:01,155 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:13:01,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 21:13:01,155 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:13:01,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:13:01,155 INFO L85 PathProgramCache]: Analyzing trace with hash -743729229, now seen corresponding path program 1 times [2022-07-22 21:13:01,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:13:01,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667500165] [2022-07-22 21:13:01,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:13:01,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:13:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:13:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:13:02,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:13:02,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667500165] [2022-07-22 21:13:02,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667500165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:13:02,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:13:02,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-07-22 21:13:02,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135213627] [2022-07-22 21:13:02,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:13:02,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-22 21:13:02,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:13:02,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-22 21:13:02,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 21:13:02,835 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 274 [2022-07-22 21:13:02,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 330 transitions, 1595 flow. Second operand has 34 states, 34 states have (on average 162.58823529411765) internal successors, (5528), 34 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:02,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:13:02,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 274 [2022-07-22 21:13:02,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:13:07,181 INFO L129 PetriNetUnfolder]: 670/3350 cut-off events. [2022-07-22 21:13:07,181 INFO L130 PetriNetUnfolder]: For 2722/2730 co-relation queries the response was YES. [2022-07-22 21:13:07,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7260 conditions, 3350 events. 670/3350 cut-off events. For 2722/2730 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 23674 event pairs, 71 based on Foata normal form. 5/3235 useless extension candidates. Maximal degree in co-relation 7214. Up to 352 conditions per place. [2022-07-22 21:13:07,203 INFO L132 encePairwiseOnDemand]: 235/274 looper letters, 206 selfloop transitions, 80 changer transitions 0/435 dead transitions. [2022-07-22 21:13:07,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 435 transitions, 2476 flow [2022-07-22 21:13:07,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-22 21:13:07,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-07-22 21:13:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 6634 transitions. [2022-07-22 21:13:07,211 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6052919708029197 [2022-07-22 21:13:07,211 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 6634 transitions. [2022-07-22 21:13:07,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 6634 transitions. [2022-07-22 21:13:07,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:13:07,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 6634 transitions. [2022-07-22 21:13:07,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 165.85) internal successors, (6634), 40 states have internal predecessors, (6634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:07,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 274.0) internal successors, (11234), 41 states have internal predecessors, (11234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:07,228 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 274.0) internal successors, (11234), 41 states have internal predecessors, (11234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:07,228 INFO L186 Difference]: Start difference. First operand has 366 places, 330 transitions, 1595 flow. Second operand 40 states and 6634 transitions. [2022-07-22 21:13:07,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 435 transitions, 2476 flow [2022-07-22 21:13:07,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 435 transitions, 2329 flow, removed 12 selfloop flow, removed 28 redundant places. [2022-07-22 21:13:07,249 INFO L242 Difference]: Finished difference. Result has 382 places, 341 transitions, 1689 flow [2022-07-22 21:13:07,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=1689, PETRI_PLACES=382, PETRI_TRANSITIONS=341} [2022-07-22 21:13:07,250 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 128 predicate places. [2022-07-22 21:13:07,250 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 341 transitions, 1689 flow [2022-07-22 21:13:07,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 162.58823529411765) internal successors, (5528), 34 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:07,252 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:13:07,252 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:13:07,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 21:13:07,252 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:13:07,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:13:07,253 INFO L85 PathProgramCache]: Analyzing trace with hash -445438229, now seen corresponding path program 1 times [2022-07-22 21:13:07,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:13:07,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384739569] [2022-07-22 21:13:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:13:07,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:13:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:13:08,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:13:08,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:13:08,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384739569] [2022-07-22 21:13:08,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384739569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:13:08,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:13:08,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-07-22 21:13:08,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133099047] [2022-07-22 21:13:08,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:13:08,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-22 21:13:08,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:13:08,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-22 21:13:08,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870 [2022-07-22 21:13:08,047 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 274 [2022-07-22 21:13:08,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 341 transitions, 1689 flow. Second operand has 30 states, 30 states have (on average 175.43333333333334) internal successors, (5263), 30 states have internal predecessors, (5263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:08,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:13:08,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 274 [2022-07-22 21:13:08,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:13:10,088 INFO L129 PetriNetUnfolder]: 499/2400 cut-off events. [2022-07-22 21:13:10,088 INFO L130 PetriNetUnfolder]: For 2351/2358 co-relation queries the response was YES. [2022-07-22 21:13:10,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5558 conditions, 2400 events. 499/2400 cut-off events. For 2351/2358 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 14368 event pairs, 71 based on Foata normal form. 6/2326 useless extension candidates. Maximal degree in co-relation 5508. Up to 477 conditions per place. [2022-07-22 21:13:10,106 INFO L132 encePairwiseOnDemand]: 243/274 looper letters, 139 selfloop transitions, 68 changer transitions 0/363 dead transitions. [2022-07-22 21:13:10,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 363 transitions, 2075 flow [2022-07-22 21:13:10,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-22 21:13:10,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-22 21:13:10,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4823 transitions. [2022-07-22 21:13:10,111 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6519329548526629 [2022-07-22 21:13:10,111 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4823 transitions. [2022-07-22 21:13:10,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4823 transitions. [2022-07-22 21:13:10,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:13:10,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4823 transitions. [2022-07-22 21:13:10,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 178.62962962962962) internal successors, (4823), 27 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:10,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 274.0) internal successors, (7672), 28 states have internal predecessors, (7672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:10,124 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 274.0) internal successors, (7672), 28 states have internal predecessors, (7672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:10,124 INFO L186 Difference]: Start difference. First operand has 382 places, 341 transitions, 1689 flow. Second operand 27 states and 4823 transitions. [2022-07-22 21:13:10,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 363 transitions, 2075 flow [2022-07-22 21:13:10,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 363 transitions, 1915 flow, removed 18 selfloop flow, removed 33 redundant places. [2022-07-22 21:13:10,142 INFO L242 Difference]: Finished difference. Result has 360 places, 322 transitions, 1518 flow [2022-07-22 21:13:10,142 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1518, PETRI_PLACES=360, PETRI_TRANSITIONS=322} [2022-07-22 21:13:10,142 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 106 predicate places. [2022-07-22 21:13:10,143 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 322 transitions, 1518 flow [2022-07-22 21:13:10,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 175.43333333333334) internal successors, (5263), 30 states have internal predecessors, (5263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:10,144 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:13:10,144 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:13:10,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 21:13:10,144 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:13:10,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:13:10,145 INFO L85 PathProgramCache]: Analyzing trace with hash -346580370, now seen corresponding path program 1 times [2022-07-22 21:13:10,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:13:10,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144149285] [2022-07-22 21:13:10,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:13:10,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:13:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:13:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:13:12,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:13:12,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144149285] [2022-07-22 21:13:12,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144149285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:13:12,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:13:12,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-07-22 21:13:12,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943849204] [2022-07-22 21:13:12,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:13:12,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-22 21:13:12,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:13:12,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-22 21:13:12,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2083, Unknown=0, NotChecked=0, Total=2256 [2022-07-22 21:13:12,804 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 274 [2022-07-22 21:13:12,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 322 transitions, 1518 flow. Second operand has 48 states, 48 states have (on average 130.3125) internal successors, (6255), 48 states have internal predecessors, (6255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:12,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:13:12,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 274 [2022-07-22 21:13:12,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:13:26,353 INFO L129 PetriNetUnfolder]: 6035/14723 cut-off events. [2022-07-22 21:13:26,353 INFO L130 PetriNetUnfolder]: For 9633/9636 co-relation queries the response was YES. [2022-07-22 21:13:26,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33041 conditions, 14723 events. 6035/14723 cut-off events. For 9633/9636 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 116951 event pairs, 1245 based on Foata normal form. 2/13709 useless extension candidates. Maximal degree in co-relation 32997. Up to 4855 conditions per place. [2022-07-22 21:13:26,447 INFO L132 encePairwiseOnDemand]: 216/274 looper letters, 574 selfloop transitions, 187 changer transitions 58/937 dead transitions. [2022-07-22 21:13:26,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 937 transitions, 5015 flow [2022-07-22 21:13:26,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-07-22 21:13:26,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2022-07-22 21:13:26,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 10746 transitions. [2022-07-22 21:13:26,459 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5028074115665356 [2022-07-22 21:13:26,460 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 10746 transitions. [2022-07-22 21:13:26,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 10746 transitions. [2022-07-22 21:13:26,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:13:26,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 10746 transitions. [2022-07-22 21:13:26,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 137.76923076923077) internal successors, (10746), 78 states have internal predecessors, (10746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:26,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 274.0) internal successors, (21646), 79 states have internal predecessors, (21646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:26,490 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 274.0) internal successors, (21646), 79 states have internal predecessors, (21646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:26,490 INFO L186 Difference]: Start difference. First operand has 360 places, 322 transitions, 1518 flow. Second operand 78 states and 10746 transitions. [2022-07-22 21:13:26,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 937 transitions, 5015 flow [2022-07-22 21:13:26,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 937 transitions, 4823 flow, removed 0 selfloop flow, removed 26 redundant places. [2022-07-22 21:13:26,563 INFO L242 Difference]: Finished difference. Result has 468 places, 457 transitions, 2858 flow [2022-07-22 21:13:26,563 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=2858, PETRI_PLACES=468, PETRI_TRANSITIONS=457} [2022-07-22 21:13:26,564 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 214 predicate places. [2022-07-22 21:13:26,564 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 457 transitions, 2858 flow [2022-07-22 21:13:26,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 130.3125) internal successors, (6255), 48 states have internal predecessors, (6255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:26,565 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:13:26,565 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:13:26,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 21:13:26,566 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:13:26,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:13:26,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1163127472, now seen corresponding path program 2 times [2022-07-22 21:13:26,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:13:26,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954387101] [2022-07-22 21:13:26,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:13:26,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:13:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:13:29,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:13:29,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:13:29,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954387101] [2022-07-22 21:13:29,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954387101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:13:29,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:13:29,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-07-22 21:13:29,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411693627] [2022-07-22 21:13:29,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:13:29,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-22 21:13:29,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:13:29,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-22 21:13:29,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1813, Unknown=0, NotChecked=0, Total=1980 [2022-07-22 21:13:29,074 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 274 [2022-07-22 21:13:29,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 457 transitions, 2858 flow. Second operand has 45 states, 45 states have (on average 136.4) internal successors, (6138), 45 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:29,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:13:29,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 274 [2022-07-22 21:13:29,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:13:42,081 INFO L129 PetriNetUnfolder]: 7447/17898 cut-off events. [2022-07-22 21:13:42,082 INFO L130 PetriNetUnfolder]: For 139566/139652 co-relation queries the response was YES. [2022-07-22 21:13:42,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63108 conditions, 17898 events. 7447/17898 cut-off events. For 139566/139652 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 146602 event pairs, 2909 based on Foata normal form. 179/17701 useless extension candidates. Maximal degree in co-relation 63007. Up to 10167 conditions per place. [2022-07-22 21:13:42,240 INFO L132 encePairwiseOnDemand]: 221/274 looper letters, 546 selfloop transitions, 123 changer transitions 38/832 dead transitions. [2022-07-22 21:13:42,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 832 transitions, 6813 flow [2022-07-22 21:13:42,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-07-22 21:13:42,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-07-22 21:13:42,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 9226 transitions. [2022-07-22 21:13:42,255 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5180235822571589 [2022-07-22 21:13:42,255 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 9226 transitions. [2022-07-22 21:13:42,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 9226 transitions. [2022-07-22 21:13:42,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:13:42,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 9226 transitions. [2022-07-22 21:13:42,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 141.93846153846152) internal successors, (9226), 65 states have internal predecessors, (9226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:42,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 274.0) internal successors, (18084), 66 states have internal predecessors, (18084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:42,294 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 274.0) internal successors, (18084), 66 states have internal predecessors, (18084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:42,294 INFO L186 Difference]: Start difference. First operand has 468 places, 457 transitions, 2858 flow. Second operand 65 states and 9226 transitions. [2022-07-22 21:13:42,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 832 transitions, 6813 flow [2022-07-22 21:13:42,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 832 transitions, 6714 flow, removed 22 selfloop flow, removed 15 redundant places. [2022-07-22 21:13:42,610 INFO L242 Difference]: Finished difference. Result has 550 places, 561 transitions, 4713 flow [2022-07-22 21:13:42,610 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=2773, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=4713, PETRI_PLACES=550, PETRI_TRANSITIONS=561} [2022-07-22 21:13:42,611 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 296 predicate places. [2022-07-22 21:13:42,611 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 561 transitions, 4713 flow [2022-07-22 21:13:42,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 136.4) internal successors, (6138), 45 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:42,612 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:13:42,613 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:13:42,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 21:13:42,613 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:13:42,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:13:42,614 INFO L85 PathProgramCache]: Analyzing trace with hash 564604696, now seen corresponding path program 3 times [2022-07-22 21:13:42,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:13:42,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358390107] [2022-07-22 21:13:42,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:13:42,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:13:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:13:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:13:45,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:13:45,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358390107] [2022-07-22 21:13:45,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358390107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:13:45,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:13:45,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-07-22 21:13:45,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641051755] [2022-07-22 21:13:45,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:13:45,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-22 21:13:45,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:13:45,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-22 21:13:45,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2081, Unknown=0, NotChecked=0, Total=2256 [2022-07-22 21:13:45,634 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 274 [2022-07-22 21:13:45,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 561 transitions, 4713 flow. Second operand has 48 states, 48 states have (on average 130.3125) internal successors, (6255), 48 states have internal predecessors, (6255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:13:45,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:13:45,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 274 [2022-07-22 21:13:45,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:14:02,032 INFO L129 PetriNetUnfolder]: 8692/20597 cut-off events. [2022-07-22 21:14:02,032 INFO L130 PetriNetUnfolder]: For 633428/633534 co-relation queries the response was YES. [2022-07-22 21:14:02,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91575 conditions, 20597 events. 8692/20597 cut-off events. For 633428/633534 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 173222 event pairs, 2177 based on Foata normal form. 177/20330 useless extension candidates. Maximal degree in co-relation 91442. Up to 11219 conditions per place. [2022-07-22 21:14:02,293 INFO L132 encePairwiseOnDemand]: 218/274 looper letters, 632 selfloop transitions, 142 changer transitions 39/931 dead transitions. [2022-07-22 21:14:02,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 931 transitions, 9323 flow [2022-07-22 21:14:02,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-07-22 21:14:02,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-07-22 21:14:02,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 9212 transitions. [2022-07-22 21:14:02,302 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.4944182052382997 [2022-07-22 21:14:02,302 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 9212 transitions. [2022-07-22 21:14:02,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 9212 transitions. [2022-07-22 21:14:02,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:14:02,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 9212 transitions. [2022-07-22 21:14:02,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 135.47058823529412) internal successors, (9212), 68 states have internal predecessors, (9212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:14:02,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 274.0) internal successors, (18906), 69 states have internal predecessors, (18906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:14:02,328 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 274.0) internal successors, (18906), 69 states have internal predecessors, (18906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:14:02,329 INFO L186 Difference]: Start difference. First operand has 550 places, 561 transitions, 4713 flow. Second operand 68 states and 9212 transitions. [2022-07-22 21:14:02,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 931 transitions, 9323 flow [2022-07-22 21:14:03,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 605 places, 931 transitions, 8398 flow, removed 448 selfloop flow, removed 12 redundant places. [2022-07-22 21:14:03,415 INFO L242 Difference]: Finished difference. Result has 637 places, 659 transitions, 5759 flow [2022-07-22 21:14:03,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=3886, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=5759, PETRI_PLACES=637, PETRI_TRANSITIONS=659} [2022-07-22 21:14:03,416 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 383 predicate places. [2022-07-22 21:14:03,416 INFO L495 AbstractCegarLoop]: Abstraction has has 637 places, 659 transitions, 5759 flow [2022-07-22 21:14:03,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 130.3125) internal successors, (6255), 48 states have internal predecessors, (6255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:14:03,418 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:14:03,418 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:14:03,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 21:14:03,418 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:14:03,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:14:03,419 INFO L85 PathProgramCache]: Analyzing trace with hash -806597076, now seen corresponding path program 4 times [2022-07-22 21:14:03,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:14:03,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555234939] [2022-07-22 21:14:03,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:14:03,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:14:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:14:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:14:06,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:14:06,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555234939] [2022-07-22 21:14:06,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555234939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:14:06,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:14:06,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-07-22 21:14:06,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329528945] [2022-07-22 21:14:06,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:14:06,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-22 21:14:06,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:14:06,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-22 21:14:06,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1822, Unknown=0, NotChecked=0, Total=1980 [2022-07-22 21:14:06,251 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 274 [2022-07-22 21:14:06,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 659 transitions, 5759 flow. Second operand has 45 states, 45 states have (on average 136.4) internal successors, (6138), 45 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:14:06,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:14:06,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 274 [2022-07-22 21:14:06,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:14:23,272 INFO L129 PetriNetUnfolder]: 9536/22841 cut-off events. [2022-07-22 21:14:23,272 INFO L130 PetriNetUnfolder]: For 1451081/1451211 co-relation queries the response was YES. [2022-07-22 21:14:23,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114742 conditions, 22841 events. 9536/22841 cut-off events. For 1451081/1451211 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 197926 event pairs, 2435 based on Foata normal form. 143/22483 useless extension candidates. Maximal degree in co-relation 114577. Up to 12499 conditions per place. [2022-07-22 21:14:23,706 INFO L132 encePairwiseOnDemand]: 220/274 looper letters, 695 selfloop transitions, 168 changer transitions 43/1032 dead transitions. [2022-07-22 21:14:23,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 703 places, 1032 transitions, 11396 flow [2022-07-22 21:14:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-07-22 21:14:23,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2022-07-22 21:14:23,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 9504 transitions. [2022-07-22 21:14:23,716 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5177034535352435 [2022-07-22 21:14:23,717 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 9504 transitions. [2022-07-22 21:14:23,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 9504 transitions. [2022-07-22 21:14:23,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:14:23,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 9504 transitions. [2022-07-22 21:14:23,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 141.8507462686567) internal successors, (9504), 67 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:14:23,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 274.0) internal successors, (18632), 68 states have internal predecessors, (18632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:14:23,748 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 274.0) internal successors, (18632), 68 states have internal predecessors, (18632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:14:23,748 INFO L186 Difference]: Start difference. First operand has 637 places, 659 transitions, 5759 flow. Second operand 67 states and 9504 transitions. [2022-07-22 21:14:23,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 703 places, 1032 transitions, 11396 flow [2022-07-22 21:14:25,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 689 places, 1032 transitions, 10704 flow, removed 325 selfloop flow, removed 14 redundant places. [2022-07-22 21:14:25,553 INFO L242 Difference]: Finished difference. Result has 717 places, 746 transitions, 7055 flow [2022-07-22 21:14:25,553 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=5091, PETRI_DIFFERENCE_MINUEND_PLACES=623, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=7055, PETRI_PLACES=717, PETRI_TRANSITIONS=746} [2022-07-22 21:14:25,554 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 463 predicate places. [2022-07-22 21:14:25,554 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 746 transitions, 7055 flow [2022-07-22 21:14:25,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 136.4) internal successors, (6138), 45 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:14:25,555 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:14:25,555 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:14:25,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 21:14:25,556 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:14:25,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:14:25,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2146314864, now seen corresponding path program 5 times [2022-07-22 21:14:25,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:14:25,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609967820] [2022-07-22 21:14:25,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:14:25,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:14:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:14:28,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:14:28,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:14:28,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609967820] [2022-07-22 21:14:28,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609967820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:14:28,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:14:28,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-07-22 21:14:28,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770537496] [2022-07-22 21:14:28,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:14:28,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-22 21:14:28,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:14:28,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-22 21:14:28,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1817, Unknown=0, NotChecked=0, Total=1980 [2022-07-22 21:14:28,154 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 274 [2022-07-22 21:14:28,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 746 transitions, 7055 flow. Second operand has 45 states, 45 states have (on average 136.4) internal successors, (6138), 45 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:14:28,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:14:28,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 274 [2022-07-22 21:14:28,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:14:45,739 INFO L129 PetriNetUnfolder]: 10584/25348 cut-off events. [2022-07-22 21:14:45,739 INFO L130 PetriNetUnfolder]: For 2486038/2486222 co-relation queries the response was YES. [2022-07-22 21:14:46,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137710 conditions, 25348 events. 10584/25348 cut-off events. For 2486038/2486222 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 224997 event pairs, 2808 based on Foata normal form. 159/24944 useless extension candidates. Maximal degree in co-relation 137517. Up to 14281 conditions per place. [2022-07-22 21:14:46,203 INFO L132 encePairwiseOnDemand]: 221/274 looper letters, 776 selfloop transitions, 164 changer transitions 41/1107 dead transitions. [2022-07-22 21:14:46,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 782 places, 1107 transitions, 12916 flow [2022-07-22 21:14:46,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-07-22 21:14:46,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2022-07-22 21:14:46,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 9358 transitions. [2022-07-22 21:14:46,211 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5174740101747402 [2022-07-22 21:14:46,211 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 9358 transitions. [2022-07-22 21:14:46,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 9358 transitions. [2022-07-22 21:14:46,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:14:46,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 9358 transitions. [2022-07-22 21:14:46,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 141.78787878787878) internal successors, (9358), 66 states have internal predecessors, (9358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:14:46,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 274.0) internal successors, (18358), 67 states have internal predecessors, (18358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:14:46,233 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 274.0) internal successors, (18358), 67 states have internal predecessors, (18358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:14:46,233 INFO L186 Difference]: Start difference. First operand has 717 places, 746 transitions, 7055 flow. Second operand 66 states and 9358 transitions. [2022-07-22 21:14:46,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 782 places, 1107 transitions, 12916 flow [2022-07-22 21:14:49,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 763 places, 1107 transitions, 11975 flow, removed 400 selfloop flow, removed 19 redundant places. [2022-07-22 21:14:49,370 INFO L242 Difference]: Finished difference. Result has 791 places, 829 transitions, 8181 flow [2022-07-22 21:14:49,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=6119, PETRI_DIFFERENCE_MINUEND_PLACES=698, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=8181, PETRI_PLACES=791, PETRI_TRANSITIONS=829} [2022-07-22 21:14:49,371 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 537 predicate places. [2022-07-22 21:14:49,372 INFO L495 AbstractCegarLoop]: Abstraction has has 791 places, 829 transitions, 8181 flow [2022-07-22 21:14:49,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 136.4) internal successors, (6138), 45 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:14:49,372 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:14:49,373 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:14:49,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 21:14:49,373 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:14:49,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:14:49,373 INFO L85 PathProgramCache]: Analyzing trace with hash -769930222, now seen corresponding path program 6 times [2022-07-22 21:14:49,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:14:49,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037380496] [2022-07-22 21:14:49,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:14:49,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:14:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:14:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:14:52,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:14:52,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037380496] [2022-07-22 21:14:52,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037380496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:14:52,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:14:52,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-07-22 21:14:52,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761429673] [2022-07-22 21:14:52,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:14:52,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-22 21:14:52,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:14:52,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-22 21:14:52,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2081, Unknown=0, NotChecked=0, Total=2256 [2022-07-22 21:14:52,895 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 274 [2022-07-22 21:14:52,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 791 places, 829 transitions, 8181 flow. Second operand has 48 states, 48 states have (on average 133.3125) internal successors, (6399), 48 states have internal predecessors, (6399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:14:52,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:14:52,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 274 [2022-07-22 21:14:52,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand