./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d 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/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 19:58:53,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 19:58:53,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 19:58:53,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 19:58:53,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 19:58:53,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 19:58:53,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 19:58:53,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 19:58:53,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 19:58:53,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 19:58:53,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 19:58:53,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 19:58:53,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 19:58:53,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 19:58:53,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 19:58:53,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 19:58:53,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 19:58:53,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 19:58:53,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 19:58:53,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 19:58:53,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 19:58:53,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 19:58:53,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 19:58:53,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 19:58:53,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 19:58:53,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 19:58:53,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 19:58:53,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 19:58:53,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 19:58:53,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 19:58:53,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 19:58:53,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 19:58:53,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 19:58:53,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 19:58:53,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 19:58:53,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 19:58:53,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 19:58:53,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 19:58:53,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 19:58:53,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 19:58:53,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 19:58:53,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 19:58:54,012 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 19:58:54,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 19:58:54,014 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 19:58:54,014 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 19:58:54,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 19:58:54,015 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 19:58:54,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 19:58:54,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 19:58:54,016 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 19:58:54,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 19:58:54,017 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 19:58:54,017 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 19:58:54,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 19:58:54,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 19:58:54,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 19:58:54,018 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 19:58:54,018 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 19:58:54,018 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 19:58:54,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 19:58:54,019 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 19:58:54,019 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 19:58:54,019 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 19:58:54,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 19:58:54,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 19:58:54,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 19:58:54,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:58:54,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 19:58:54,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 19:58:54,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 19:58:54,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 19:58:54,021 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 19:58:54,021 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 19:58:54,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 19:58:54,021 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 19:58:54,022 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 19:58:54,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 19:58:54,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 19:58:54,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 19:58:54,326 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 19:58:54,326 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 19:58:54,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-08-29 19:58:55,457 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 19:58:55,792 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 19:58:55,793 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-08-29 19:58:55,807 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/308ecfeb3/495da3e27cbc4e6b95c1e1483483c880/FLAG94fa94129 [2023-08-29 19:58:55,831 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/308ecfeb3/495da3e27cbc4e6b95c1e1483483c880 [2023-08-29 19:58:55,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 19:58:55,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 19:58:55,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 19:58:55,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 19:58:55,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 19:58:55,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:58:55" (1/1) ... [2023-08-29 19:58:55,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55977c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:58:55, skipping insertion in model container [2023-08-29 19:58:55,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:58:55" (1/1) ... [2023-08-29 19:58:55,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 19:58:55,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 19:58:56,145 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i[30553,30566] [2023-08-29 19:58:56,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:58:56,169 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 19:58:56,206 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i[30553,30566] [2023-08-29 19:58:56,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:58:56,255 INFO L208 MainTranslator]: Completed translation [2023-08-29 19:58:56,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:58:56 WrapperNode [2023-08-29 19:58:56,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 19:58:56,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 19:58:56,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 19:58:56,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 19:58:56,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:58:56" (1/1) ... [2023-08-29 19:58:56,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:58:56" (1/1) ... [2023-08-29 19:58:56,319 INFO L138 Inliner]: procedures = 172, calls = 27, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 126 [2023-08-29 19:58:56,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 19:58:56,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 19:58:56,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 19:58:56,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 19:58:56,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:58:56" (1/1) ... [2023-08-29 19:58:56,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:58:56" (1/1) ... [2023-08-29 19:58:56,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:58:56" (1/1) ... [2023-08-29 19:58:56,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:58:56" (1/1) ... [2023-08-29 19:58:56,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:58:56" (1/1) ... [2023-08-29 19:58:56,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:58:56" (1/1) ... [2023-08-29 19:58:56,346 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:58:56" (1/1) ... [2023-08-29 19:58:56,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:58:56" (1/1) ... [2023-08-29 19:58:56,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 19:58:56,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 19:58:56,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 19:58:56,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 19:58:56,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:58:56" (1/1) ... [2023-08-29 19:58:56,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:58:56,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:58:56,389 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) [2023-08-29 19:58:56,404 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 [2023-08-29 19:58:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 19:58:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-29 19:58:56,432 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-29 19:58:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-29 19:58:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-29 19:58:56,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 19:58:56,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 19:58:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 19:58:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 19:58:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 19:58:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 19:58:56,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 19:58:56,437 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 19:58:56,580 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 19:58:56,582 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 19:58:56,973 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 19:58:57,133 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 19:58:57,133 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-29 19:58:57,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:58:57 BoogieIcfgContainer [2023-08-29 19:58:57,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 19:58:57,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 19:58:57,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 19:58:57,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 19:58:57,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 07:58:55" (1/3) ... [2023-08-29 19:58:57,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b050a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:58:57, skipping insertion in model container [2023-08-29 19:58:57,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:58:56" (2/3) ... [2023-08-29 19:58:57,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b050a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:58:57, skipping insertion in model container [2023-08-29 19:58:57,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:58:57" (3/3) ... [2023-08-29 19:58:57,143 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2023-08-29 19:58:57,157 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 19:58:57,158 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-29 19:58:57,158 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 19:58:57,270 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 19:58:57,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 108 transitions, 226 flow [2023-08-29 19:58:57,368 INFO L130 PetriNetUnfolder]: 6/122 cut-off events. [2023-08-29 19:58:57,369 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:58:57,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 122 events. 6/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 281 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 103. Up to 4 conditions per place. [2023-08-29 19:58:57,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 108 transitions, 226 flow [2023-08-29 19:58:57,382 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 107 transitions, 222 flow [2023-08-29 19:58:57,385 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 19:58:57,395 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 107 transitions, 222 flow [2023-08-29 19:58:57,398 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 107 transitions, 222 flow [2023-08-29 19:58:57,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 107 transitions, 222 flow [2023-08-29 19:58:57,438 INFO L130 PetriNetUnfolder]: 6/122 cut-off events. [2023-08-29 19:58:57,438 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:58:57,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 122 events. 6/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 281 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 103. Up to 4 conditions per place. [2023-08-29 19:58:57,443 INFO L119 LiptonReduction]: Number of co-enabled transitions 4236 [2023-08-29 19:59:00,088 INFO L134 LiptonReduction]: Checked pairs total: 10655 [2023-08-29 19:59:00,089 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-29 19:59:00,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 19:59:00,106 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@377eabcd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 19:59:00,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2023-08-29 19:59:00,108 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 19:59:00,108 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:59:00,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:00,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 19:59:00,110 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-08-29 19:59:00,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:00,114 INFO L85 PathProgramCache]: Analyzing trace with hash 642, now seen corresponding path program 1 times [2023-08-29 19:59:00,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:00,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931291336] [2023-08-29 19:59:00,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:00,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:00,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:00,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:00,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931291336] [2023-08-29 19:59:00,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931291336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:00,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:00,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 19:59:00,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603704512] [2023-08-29 19:59:00,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:00,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 19:59:00,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:00,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 19:59:00,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 19:59:00,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 206 [2023-08-29 19:59:00,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 112 flow. Second operand has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:00,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:00,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 206 [2023-08-29 19:59:00,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:00,569 INFO L130 PetriNetUnfolder]: 1418/2191 cut-off events. [2023-08-29 19:59:00,569 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-29 19:59:00,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4360 conditions, 2191 events. 1418/2191 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 10704 event pairs, 1135 based on Foata normal form. 0/1029 useless extension candidates. Maximal degree in co-relation 4350. Up to 2139 conditions per place. [2023-08-29 19:59:00,588 INFO L137 encePairwiseOnDemand]: 188/206 looper letters, 31 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2023-08-29 19:59:00,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 138 flow [2023-08-29 19:59:00,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 19:59:00,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 19:59:00,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 189 transitions. [2023-08-29 19:59:00,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4587378640776699 [2023-08-29 19:59:00,601 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 189 transitions. [2023-08-29 19:59:00,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 189 transitions. [2023-08-29 19:59:00,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:00,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 189 transitions. [2023-08-29 19:59:00,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:00,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:00,615 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:00,617 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 112 flow. Second operand 2 states and 189 transitions. [2023-08-29 19:59:00,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 138 flow [2023-08-29 19:59:00,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 137 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 19:59:00,621 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 75 flow [2023-08-29 19:59:00,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=75, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-08-29 19:59:00,626 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -18 predicate places. [2023-08-29 19:59:00,626 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 75 flow [2023-08-29 19:59:00,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:00,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:00,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 19:59:00,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 19:59:00,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-08-29 19:59:00,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:00,636 INFO L85 PathProgramCache]: Analyzing trace with hash 19606480, now seen corresponding path program 1 times [2023-08-29 19:59:00,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:00,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692129363] [2023-08-29 19:59:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:00,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:00,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:00,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:00,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692129363] [2023-08-29 19:59:00,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692129363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:00,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:00,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:59:00,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268844369] [2023-08-29 19:59:00,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:00,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:59:00,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:00,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:59:00,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:59:00,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 206 [2023-08-29 19:59:00,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:00,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:00,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 206 [2023-08-29 19:59:00,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:01,057 INFO L130 PetriNetUnfolder]: 1107/1727 cut-off events. [2023-08-29 19:59:01,057 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-29 19:59:01,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3441 conditions, 1727 events. 1107/1727 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8124 event pairs, 881 based on Foata normal form. 0/884 useless extension candidates. Maximal degree in co-relation 3437. Up to 1683 conditions per place. [2023-08-29 19:59:01,067 INFO L137 encePairwiseOnDemand]: 204/206 looper letters, 29 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-08-29 19:59:01,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 133 flow [2023-08-29 19:59:01,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:59:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:59:01,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2023-08-29 19:59:01,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3511326860841424 [2023-08-29 19:59:01,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2023-08-29 19:59:01,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2023-08-29 19:59:01,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:01,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2023-08-29 19:59:01,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,074 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,074 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 75 flow. Second operand 3 states and 217 transitions. [2023-08-29 19:59:01,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 133 flow [2023-08-29 19:59:01,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 133 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:59:01,075 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 75 flow [2023-08-29 19:59:01,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-08-29 19:59:01,076 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -17 predicate places. [2023-08-29 19:59:01,076 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 75 flow [2023-08-29 19:59:01,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:01,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 19:59:01,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 19:59:01,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-08-29 19:59:01,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:01,078 INFO L85 PathProgramCache]: Analyzing trace with hash 19606481, now seen corresponding path program 1 times [2023-08-29 19:59:01,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:01,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365789660] [2023-08-29 19:59:01,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:01,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:01,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:01,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365789660] [2023-08-29 19:59:01,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365789660] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:01,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:01,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:59:01,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099894598] [2023-08-29 19:59:01,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:01,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:59:01,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:01,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:59:01,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:59:01,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 206 [2023-08-29 19:59:01,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:01,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 206 [2023-08-29 19:59:01,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:01,315 INFO L130 PetriNetUnfolder]: 796/1263 cut-off events. [2023-08-29 19:59:01,315 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-29 19:59:01,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2524 conditions, 1263 events. 796/1263 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5713 event pairs, 627 based on Foata normal form. 0/739 useless extension candidates. Maximal degree in co-relation 2519. Up to 1228 conditions per place. [2023-08-29 19:59:01,323 INFO L137 encePairwiseOnDemand]: 204/206 looper letters, 28 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-08-29 19:59:01,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 131 flow [2023-08-29 19:59:01,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:59:01,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:59:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2023-08-29 19:59:01,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35436893203883496 [2023-08-29 19:59:01,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2023-08-29 19:59:01,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2023-08-29 19:59:01,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:01,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2023-08-29 19:59:01,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,330 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,330 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 75 flow. Second operand 3 states and 219 transitions. [2023-08-29 19:59:01,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 131 flow [2023-08-29 19:59:01,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 19:59:01,331 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 74 flow [2023-08-29 19:59:01,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-08-29 19:59:01,331 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -17 predicate places. [2023-08-29 19:59:01,331 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 74 flow [2023-08-29 19:59:01,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:01,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 19:59:01,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 19:59:01,332 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-08-29 19:59:01,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:01,333 INFO L85 PathProgramCache]: Analyzing trace with hash 19604718, now seen corresponding path program 1 times [2023-08-29 19:59:01,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:01,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395126614] [2023-08-29 19:59:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:01,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:01,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:01,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395126614] [2023-08-29 19:59:01,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395126614] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:01,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:01,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:59:01,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668238043] [2023-08-29 19:59:01,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:01,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:59:01,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:01,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:59:01,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:59:01,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 206 [2023-08-29 19:59:01,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:01,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 206 [2023-08-29 19:59:01,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:01,529 INFO L130 PetriNetUnfolder]: 441/721 cut-off events. [2023-08-29 19:59:01,529 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-29 19:59:01,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443 conditions, 721 events. 441/721 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2942 event pairs, 349 based on Foata normal form. 0/514 useless extension candidates. Maximal degree in co-relation 1438. Up to 693 conditions per place. [2023-08-29 19:59:01,534 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 22 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-29 19:59:01,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 108 flow [2023-08-29 19:59:01,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:59:01,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:59:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-08-29 19:59:01,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3818770226537217 [2023-08-29 19:59:01,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-08-29 19:59:01,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-08-29 19:59:01,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:01,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-08-29 19:59:01,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,545 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 74 flow. Second operand 3 states and 236 transitions. [2023-08-29 19:59:01,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 108 flow [2023-08-29 19:59:01,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 19:59:01,546 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 63 flow [2023-08-29 19:59:01,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-08-29 19:59:01,548 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -22 predicate places. [2023-08-29 19:59:01,548 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 63 flow [2023-08-29 19:59:01,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:01,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 19:59:01,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 19:59:01,550 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-08-29 19:59:01,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:01,551 INFO L85 PathProgramCache]: Analyzing trace with hash 19604719, now seen corresponding path program 1 times [2023-08-29 19:59:01,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:01,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217921601] [2023-08-29 19:59:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:01,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:01,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:01,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:01,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217921601] [2023-08-29 19:59:01,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217921601] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:01,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:01,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:59:01,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716799309] [2023-08-29 19:59:01,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:01,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:59:01,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:01,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:59:01,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:59:01,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 206 [2023-08-29 19:59:01,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:01,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 206 [2023-08-29 19:59:01,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:01,719 INFO L130 PetriNetUnfolder]: 215/370 cut-off events. [2023-08-29 19:59:01,719 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 19:59:01,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 744 conditions, 370 events. 215/370 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1286 event pairs, 173 based on Foata normal form. 15/342 useless extension candidates. Maximal degree in co-relation 739. Up to 350 conditions per place. [2023-08-29 19:59:01,722 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 17 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2023-08-29 19:59:01,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 89 flow [2023-08-29 19:59:01,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:59:01,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:59:01,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-08-29 19:59:01,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37702265372168287 [2023-08-29 19:59:01,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-08-29 19:59:01,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-08-29 19:59:01,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:01,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-08-29 19:59:01,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,727 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 63 flow. Second operand 3 states and 233 transitions. [2023-08-29 19:59:01,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 89 flow [2023-08-29 19:59:01,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 19:59:01,728 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 54 flow [2023-08-29 19:59:01,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2023-08-29 19:59:01,731 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -26 predicate places. [2023-08-29 19:59:01,731 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 54 flow [2023-08-29 19:59:01,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:01,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 19:59:01,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 19:59:01,732 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-08-29 19:59:01,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:01,733 INFO L85 PathProgramCache]: Analyzing trace with hash 607746914, now seen corresponding path program 1 times [2023-08-29 19:59:01,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:01,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323175143] [2023-08-29 19:59:01,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:01,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:01,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:01,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:01,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323175143] [2023-08-29 19:59:01,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323175143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:01,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:01,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:59:01,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113182951] [2023-08-29 19:59:01,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:01,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:59:01,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:01,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:59:01,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:59:01,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 206 [2023-08-29 19:59:01,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:01,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 206 [2023-08-29 19:59:01,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:01,863 INFO L130 PetriNetUnfolder]: 232/389 cut-off events. [2023-08-29 19:59:01,863 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 19:59:01,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 389 events. 232/389 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1310 event pairs, 66 based on Foata normal form. 0/355 useless extension candidates. Maximal degree in co-relation 791. Up to 278 conditions per place. [2023-08-29 19:59:01,865 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 21 selfloop transitions, 2 changer transitions 1/26 dead transitions. [2023-08-29 19:59:01,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 112 flow [2023-08-29 19:59:01,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:59:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:59:01,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2023-08-29 19:59:01,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3511326860841424 [2023-08-29 19:59:01,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2023-08-29 19:59:01,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2023-08-29 19:59:01,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:01,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2023-08-29 19:59:01,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,869 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 54 flow. Second operand 3 states and 217 transitions. [2023-08-29 19:59:01,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 112 flow [2023-08-29 19:59:01,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 111 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 19:59:01,870 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 59 flow [2023-08-29 19:59:01,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2023-08-29 19:59:01,871 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -24 predicate places. [2023-08-29 19:59:01,871 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 59 flow [2023-08-29 19:59:01,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:01,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:01,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 19:59:01,872 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-08-29 19:59:01,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:01,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1487540627, now seen corresponding path program 1 times [2023-08-29 19:59:01,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:01,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10047985] [2023-08-29 19:59:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:01,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:01,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:01,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:01,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10047985] [2023-08-29 19:59:01,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10047985] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:01,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:01,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:59:01,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129712335] [2023-08-29 19:59:01,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:01,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:59:01,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:01,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:59:01,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:59:01,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 206 [2023-08-29 19:59:01,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 59 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:01,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:01,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 206 [2023-08-29 19:59:01,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:02,046 INFO L130 PetriNetUnfolder]: 207/349 cut-off events. [2023-08-29 19:59:02,046 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-29 19:59:02,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 349 events. 207/349 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1132 event pairs, 29 based on Foata normal form. 3/351 useless extension candidates. Maximal degree in co-relation 754. Up to 238 conditions per place. [2023-08-29 19:59:02,048 INFO L137 encePairwiseOnDemand]: 201/206 looper letters, 29 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-08-29 19:59:02,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 155 flow [2023-08-29 19:59:02,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:59:02,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:59:02,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 339 transitions. [2023-08-29 19:59:02,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.329126213592233 [2023-08-29 19:59:02,050 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 339 transitions. [2023-08-29 19:59:02,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 339 transitions. [2023-08-29 19:59:02,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:02,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 339 transitions. [2023-08-29 19:59:02,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,053 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,053 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 59 flow. Second operand 5 states and 339 transitions. [2023-08-29 19:59:02,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 155 flow [2023-08-29 19:59:02,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:59:02,054 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 67 flow [2023-08-29 19:59:02,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=67, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2023-08-29 19:59:02,055 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -21 predicate places. [2023-08-29 19:59:02,055 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 67 flow [2023-08-29 19:59:02,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:02,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:02,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 19:59:02,056 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-08-29 19:59:02,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:02,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1130879636, now seen corresponding path program 1 times [2023-08-29 19:59:02,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:02,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743849577] [2023-08-29 19:59:02,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:02,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:02,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:02,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743849577] [2023-08-29 19:59:02,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743849577] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:02,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:02,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:59:02,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577711911] [2023-08-29 19:59:02,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:02,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:59:02,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:02,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:59:02,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:59:02,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 206 [2023-08-29 19:59:02,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 67 flow. Second operand has 6 states, 6 states have (on average 60.666666666666664) internal successors, (364), 6 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:02,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 206 [2023-08-29 19:59:02,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:02,248 INFO L130 PetriNetUnfolder]: 192/325 cut-off events. [2023-08-29 19:59:02,248 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-29 19:59:02,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 325 events. 192/325 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1035 event pairs, 20 based on Foata normal form. 9/333 useless extension candidates. Maximal degree in co-relation 742. Up to 118 conditions per place. [2023-08-29 19:59:02,250 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 33 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-29 19:59:02,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 40 transitions, 183 flow [2023-08-29 19:59:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 19:59:02,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 19:59:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 393 transitions. [2023-08-29 19:59:02,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3179611650485437 [2023-08-29 19:59:02,252 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 393 transitions. [2023-08-29 19:59:02,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 393 transitions. [2023-08-29 19:59:02,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:02,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 393 transitions. [2023-08-29 19:59:02,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,255 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,255 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 67 flow. Second operand 6 states and 393 transitions. [2023-08-29 19:59:02,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 40 transitions, 183 flow [2023-08-29 19:59:02,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 175 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 19:59:02,257 INFO L231 Difference]: Finished difference. Result has 37 places, 20 transitions, 73 flow [2023-08-29 19:59:02,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=73, PETRI_PLACES=37, PETRI_TRANSITIONS=20} [2023-08-29 19:59:02,258 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -19 predicate places. [2023-08-29 19:59:02,258 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 20 transitions, 73 flow [2023-08-29 19:59:02,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.666666666666664) internal successors, (364), 6 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:02,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:02,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 19:59:02,258 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-08-29 19:59:02,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:02,259 INFO L85 PathProgramCache]: Analyzing trace with hash -313107462, now seen corresponding path program 1 times [2023-08-29 19:59:02,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:02,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781079394] [2023-08-29 19:59:02,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:02,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:02,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:02,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781079394] [2023-08-29 19:59:02,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781079394] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:02,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:02,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 19:59:02,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568008527] [2023-08-29 19:59:02,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:02,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 19:59:02,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:02,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 19:59:02,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-29 19:59:02,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 206 [2023-08-29 19:59:02,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 20 transitions, 73 flow. Second operand has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:02,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 206 [2023-08-29 19:59:02,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:02,480 INFO L130 PetriNetUnfolder]: 208/356 cut-off events. [2023-08-29 19:59:02,480 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2023-08-29 19:59:02,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 356 events. 208/356 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1149 event pairs, 17 based on Foata normal form. 9/364 useless extension candidates. Maximal degree in co-relation 828. Up to 96 conditions per place. [2023-08-29 19:59:02,482 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 36 selfloop transitions, 6 changer transitions 2/46 dead transitions. [2023-08-29 19:59:02,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 213 flow [2023-08-29 19:59:02,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 19:59:02,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 19:59:02,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 451 transitions. [2023-08-29 19:59:02,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3127600554785021 [2023-08-29 19:59:02,484 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 451 transitions. [2023-08-29 19:59:02,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 451 transitions. [2023-08-29 19:59:02,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:02,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 451 transitions. [2023-08-29 19:59:02,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.42857142857143) internal successors, (451), 7 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,488 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,488 INFO L175 Difference]: Start difference. First operand has 37 places, 20 transitions, 73 flow. Second operand 7 states and 451 transitions. [2023-08-29 19:59:02,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 213 flow [2023-08-29 19:59:02,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 46 transitions, 203 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 19:59:02,490 INFO L231 Difference]: Finished difference. Result has 40 places, 20 transitions, 83 flow [2023-08-29 19:59:02,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=83, PETRI_PLACES=40, PETRI_TRANSITIONS=20} [2023-08-29 19:59:02,491 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -16 predicate places. [2023-08-29 19:59:02,491 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 20 transitions, 83 flow [2023-08-29 19:59:02,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:02,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:02,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 19:59:02,491 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-08-29 19:59:02,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:02,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1116397779, now seen corresponding path program 1 times [2023-08-29 19:59:02,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:02,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008343908] [2023-08-29 19:59:02,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:02,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:02,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:02,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008343908] [2023-08-29 19:59:02,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008343908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:02,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:02,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 19:59:02,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626035116] [2023-08-29 19:59:02,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:02,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 19:59:02,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:02,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 19:59:02,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-29 19:59:02,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 206 [2023-08-29 19:59:02,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 20 transitions, 83 flow. Second operand has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:02,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 206 [2023-08-29 19:59:02,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:02,763 INFO L130 PetriNetUnfolder]: 174/298 cut-off events. [2023-08-29 19:59:02,763 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2023-08-29 19:59:02,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 298 events. 174/298 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 932 event pairs, 14 based on Foata normal form. 6/303 useless extension candidates. Maximal degree in co-relation 743. Up to 125 conditions per place. [2023-08-29 19:59:02,764 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2023-08-29 19:59:02,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 211 flow [2023-08-29 19:59:02,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 19:59:02,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 19:59:02,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 499 transitions. [2023-08-29 19:59:02,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30279126213592233 [2023-08-29 19:59:02,766 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 499 transitions. [2023-08-29 19:59:02,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 499 transitions. [2023-08-29 19:59:02,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:02,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 499 transitions. [2023-08-29 19:59:02,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 62.375) internal successors, (499), 8 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,770 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,770 INFO L175 Difference]: Start difference. First operand has 40 places, 20 transitions, 83 flow. Second operand 8 states and 499 transitions. [2023-08-29 19:59:02,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 211 flow [2023-08-29 19:59:02,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 43 transitions, 191 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-08-29 19:59:02,772 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-08-29 19:59:02,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-08-29 19:59:02,773 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -20 predicate places. [2023-08-29 19:59:02,773 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-08-29 19:59:02,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:02,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 55 remaining) [2023-08-29 19:59:02,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 55 remaining) [2023-08-29 19:59:02,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 55 remaining) [2023-08-29 19:59:02,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 55 remaining) [2023-08-29 19:59:02,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 55 remaining) [2023-08-29 19:59:02,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 55 remaining) [2023-08-29 19:59:02,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 55 remaining) [2023-08-29 19:59:02,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 55 remaining) [2023-08-29 19:59:02,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 55 remaining) [2023-08-29 19:59:02,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 55 remaining) [2023-08-29 19:59:02,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 55 remaining) [2023-08-29 19:59:02,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 55 remaining) [2023-08-29 19:59:02,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 55 remaining) [2023-08-29 19:59:02,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 55 remaining) [2023-08-29 19:59:02,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 55 remaining) [2023-08-29 19:59:02,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 55 remaining) [2023-08-29 19:59:02,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 55 remaining) [2023-08-29 19:59:02,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 55 remaining) [2023-08-29 19:59:02,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 55 remaining) [2023-08-29 19:59:02,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 55 remaining) [2023-08-29 19:59:02,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 55 remaining) [2023-08-29 19:59:02,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 55 remaining) [2023-08-29 19:59:02,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 55 remaining) [2023-08-29 19:59:02,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (31 of 55 remaining) [2023-08-29 19:59:02,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 55 remaining) [2023-08-29 19:59:02,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 55 remaining) [2023-08-29 19:59:02,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 55 remaining) [2023-08-29 19:59:02,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 55 remaining) [2023-08-29 19:59:02,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 55 remaining) [2023-08-29 19:59:02,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (25 of 55 remaining) [2023-08-29 19:59:02,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 55 remaining) [2023-08-29 19:59:02,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 55 remaining) [2023-08-29 19:59:02,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 55 remaining) [2023-08-29 19:59:02,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 55 remaining) [2023-08-29 19:59:02,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 55 remaining) [2023-08-29 19:59:02,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 55 remaining) [2023-08-29 19:59:02,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 55 remaining) [2023-08-29 19:59:02,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 55 remaining) [2023-08-29 19:59:02,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 55 remaining) [2023-08-29 19:59:02,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 55 remaining) [2023-08-29 19:59:02,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 55 remaining) [2023-08-29 19:59:02,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 55 remaining) [2023-08-29 19:59:02,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 55 remaining) [2023-08-29 19:59:02,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 55 remaining) [2023-08-29 19:59:02,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 55 remaining) [2023-08-29 19:59:02,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (9 of 55 remaining) [2023-08-29 19:59:02,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 55 remaining) [2023-08-29 19:59:02,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 55 remaining) [2023-08-29 19:59:02,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 55 remaining) [2023-08-29 19:59:02,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 55 remaining) [2023-08-29 19:59:02,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 55 remaining) [2023-08-29 19:59:02,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 55 remaining) [2023-08-29 19:59:02,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 55 remaining) [2023-08-29 19:59:02,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 55 remaining) [2023-08-29 19:59:02,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 55 remaining) [2023-08-29 19:59:02,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 19:59:02,782 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:02,784 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 19:59:02,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 108 transitions, 226 flow [2023-08-29 19:59:02,797 INFO L130 PetriNetUnfolder]: 6/122 cut-off events. [2023-08-29 19:59:02,797 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:59:02,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 122 events. 6/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 281 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 103. Up to 4 conditions per place. [2023-08-29 19:59:02,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 108 transitions, 226 flow [2023-08-29 19:59:02,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 105 transitions, 218 flow [2023-08-29 19:59:02,799 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 19:59:02,799 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 105 transitions, 218 flow [2023-08-29 19:59:02,799 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 105 transitions, 218 flow [2023-08-29 19:59:02,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 105 transitions, 218 flow [2023-08-29 19:59:02,808 INFO L130 PetriNetUnfolder]: 6/120 cut-off events. [2023-08-29 19:59:02,808 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:59:02,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 120 events. 6/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 278 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 103. Up to 4 conditions per place. [2023-08-29 19:59:02,811 INFO L119 LiptonReduction]: Number of co-enabled transitions 4236 [2023-08-29 19:59:05,059 INFO L134 LiptonReduction]: Checked pairs total: 10655 [2023-08-29 19:59:05,059 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-08-29 19:59:05,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 19:59:05,061 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@377eabcd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 19:59:05,061 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-29 19:59:05,065 INFO L130 PetriNetUnfolder]: 1/36 cut-off events. [2023-08-29 19:59:05,066 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:59:05,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:05,066 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:05,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 19:59:05,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:05,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1203140769, now seen corresponding path program 1 times [2023-08-29 19:59:05,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:05,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286042507] [2023-08-29 19:59:05,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:05,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 19:59:05,084 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 19:59:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 19:59:05,119 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 19:59:05,119 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 19:59:05,119 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-29 19:59:05,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-29 19:59:05,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 19:59:05,120 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 19:59:05,121 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-29 19:59:05,121 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 19:59:05,121 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 19:59:05,174 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 19:59:05,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 174 transitions, 372 flow [2023-08-29 19:59:05,208 INFO L130 PetriNetUnfolder]: 8/183 cut-off events. [2023-08-29 19:59:05,208 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 19:59:05,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 183 events. 8/183 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 556 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 192. Up to 6 conditions per place. [2023-08-29 19:59:05,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 174 transitions, 372 flow [2023-08-29 19:59:05,213 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 151 transitions, 317 flow [2023-08-29 19:59:05,213 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 19:59:05,213 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 151 transitions, 317 flow [2023-08-29 19:59:05,213 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 151 transitions, 317 flow [2023-08-29 19:59:05,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 151 transitions, 317 flow [2023-08-29 19:59:05,234 INFO L130 PetriNetUnfolder]: 8/183 cut-off events. [2023-08-29 19:59:05,234 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 19:59:05,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 183 events. 8/183 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 560 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 168. Up to 6 conditions per place. [2023-08-29 19:59:05,244 INFO L119 LiptonReduction]: Number of co-enabled transitions 11416 [2023-08-29 19:59:08,272 INFO L134 LiptonReduction]: Checked pairs total: 42449 [2023-08-29 19:59:08,272 INFO L136 LiptonReduction]: Total number of compositions: 137 [2023-08-29 19:59:08,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 19:59:08,279 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@377eabcd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 19:59:08,279 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2023-08-29 19:59:08,279 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 19:59:08,280 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:59:08,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:08,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 19:59:08,281 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:08,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:08,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1109, now seen corresponding path program 1 times [2023-08-29 19:59:08,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:08,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223469669] [2023-08-29 19:59:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:08,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:08,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:08,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223469669] [2023-08-29 19:59:08,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223469669] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:08,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:08,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 19:59:08,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921355043] [2023-08-29 19:59:08,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:08,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 19:59:08,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:08,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 19:59:08,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 19:59:08,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 311 [2023-08-29 19:59:08,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 189 flow. Second operand has 2 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:08,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:08,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 311 [2023-08-29 19:59:08,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:11,661 INFO L130 PetriNetUnfolder]: 27013/39057 cut-off events. [2023-08-29 19:59:11,662 INFO L131 PetriNetUnfolder]: For 483/483 co-relation queries the response was YES. [2023-08-29 19:59:11,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75896 conditions, 39057 events. 27013/39057 cut-off events. For 483/483 co-relation queries the response was YES. Maximal size of possible extension queue 1837. Compared 282182 event pairs, 22776 based on Foata normal form. 0/18017 useless extension candidates. Maximal degree in co-relation 75885. Up to 36275 conditions per place. [2023-08-29 19:59:11,934 INFO L137 encePairwiseOnDemand]: 284/311 looper letters, 47 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2023-08-29 19:59:11,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 229 flow [2023-08-29 19:59:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 19:59:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 19:59:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 274 transitions. [2023-08-29 19:59:11,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405144694533762 [2023-08-29 19:59:11,937 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 274 transitions. [2023-08-29 19:59:11,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 274 transitions. [2023-08-29 19:59:11,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:11,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 274 transitions. [2023-08-29 19:59:11,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:11,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:11,941 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:11,941 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 189 flow. Second operand 2 states and 274 transitions. [2023-08-29 19:59:11,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 229 flow [2023-08-29 19:59:11,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 60 transitions, 226 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 19:59:11,945 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 132 flow [2023-08-29 19:59:11,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=132, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2023-08-29 19:59:11,946 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -27 predicate places. [2023-08-29 19:59:11,946 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 132 flow [2023-08-29 19:59:11,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:11,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:11,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 19:59:11,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 19:59:11,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:11,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:11,947 INFO L85 PathProgramCache]: Analyzing trace with hash 34034850, now seen corresponding path program 1 times [2023-08-29 19:59:11,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:11,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123402888] [2023-08-29 19:59:11,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:11,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:11,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:11,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123402888] [2023-08-29 19:59:11,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123402888] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:11,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:11,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:59:11,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115006661] [2023-08-29 19:59:11,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:11,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:59:11,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:11,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:59:11,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:59:11,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 311 [2023-08-29 19:59:12,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:12,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:12,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 311 [2023-08-29 19:59:12,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:14,137 INFO L130 PetriNetUnfolder]: 19722/28800 cut-off events. [2023-08-29 19:59:14,137 INFO L131 PetriNetUnfolder]: For 429/429 co-relation queries the response was YES. [2023-08-29 19:59:14,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55981 conditions, 28800 events. 19722/28800 cut-off events. For 429/429 co-relation queries the response was YES. Maximal size of possible extension queue 1299. Compared 202067 event pairs, 16544 based on Foata normal form. 0/14106 useless extension candidates. Maximal degree in co-relation 55976. Up to 26670 conditions per place. [2023-08-29 19:59:14,312 INFO L137 encePairwiseOnDemand]: 309/311 looper letters, 45 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-08-29 19:59:14,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 59 transitions, 222 flow [2023-08-29 19:59:14,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:59:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:59:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-08-29 19:59:14,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3461950696677385 [2023-08-29 19:59:14,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-08-29 19:59:14,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-08-29 19:59:14,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:14,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-08-29 19:59:14,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:14,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:14,318 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:14,318 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 132 flow. Second operand 3 states and 323 transitions. [2023-08-29 19:59:14,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 59 transitions, 222 flow [2023-08-29 19:59:14,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 222 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:59:14,322 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 132 flow [2023-08-29 19:59:14,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-08-29 19:59:14,323 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -26 predicate places. [2023-08-29 19:59:14,323 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 132 flow [2023-08-29 19:59:14,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:14,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:14,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 19:59:14,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 19:59:14,324 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:14,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:14,324 INFO L85 PathProgramCache]: Analyzing trace with hash 34034851, now seen corresponding path program 1 times [2023-08-29 19:59:14,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:14,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115312857] [2023-08-29 19:59:14,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:14,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:14,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:14,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115312857] [2023-08-29 19:59:14,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115312857] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:14,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:14,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:59:14,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89112640] [2023-08-29 19:59:14,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:14,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:59:14,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:14,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:59:14,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:59:14,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 311 [2023-08-29 19:59:14,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:14,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:14,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 311 [2023-08-29 19:59:14,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:15,669 INFO L130 PetriNetUnfolder]: 12431/18543 cut-off events. [2023-08-29 19:59:15,669 INFO L131 PetriNetUnfolder]: For 429/429 co-relation queries the response was YES. [2023-08-29 19:59:15,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36122 conditions, 18543 events. 12431/18543 cut-off events. For 429/429 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 124953 event pairs, 10312 based on Foata normal form. 0/10195 useless extension candidates. Maximal degree in co-relation 36116. Up to 17066 conditions per place. [2023-08-29 19:59:15,768 INFO L137 encePairwiseOnDemand]: 309/311 looper letters, 44 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-29 19:59:15,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 220 flow [2023-08-29 19:59:15,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:59:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:59:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2023-08-29 19:59:15,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35476956055734193 [2023-08-29 19:59:15,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 331 transitions. [2023-08-29 19:59:15,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 331 transitions. [2023-08-29 19:59:15,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:15,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 331 transitions. [2023-08-29 19:59:15,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:15,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:15,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:15,774 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 132 flow. Second operand 3 states and 331 transitions. [2023-08-29 19:59:15,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 220 flow [2023-08-29 19:59:15,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 219 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 19:59:15,778 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 131 flow [2023-08-29 19:59:15,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2023-08-29 19:59:15,781 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -26 predicate places. [2023-08-29 19:59:15,781 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 131 flow [2023-08-29 19:59:15,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:15,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:15,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 19:59:15,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 19:59:15,782 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:15,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:15,783 INFO L85 PathProgramCache]: Analyzing trace with hash 34031836, now seen corresponding path program 1 times [2023-08-29 19:59:15,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:15,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705028457] [2023-08-29 19:59:15,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:15,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:15,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:15,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705028457] [2023-08-29 19:59:15,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705028457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:15,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:15,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:59:15,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404714792] [2023-08-29 19:59:15,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:15,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:59:15,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:15,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:59:15,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:59:15,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 311 [2023-08-29 19:59:15,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:15,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:15,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 311 [2023-08-29 19:59:15,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:16,311 INFO L130 PetriNetUnfolder]: 5267/8252 cut-off events. [2023-08-29 19:59:16,312 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2023-08-29 19:59:16,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15867 conditions, 8252 events. 5267/8252 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 53022 event pairs, 4350 based on Foata normal form. 0/5692 useless extension candidates. Maximal degree in co-relation 15861. Up to 7304 conditions per place. [2023-08-29 19:59:16,361 INFO L137 encePairwiseOnDemand]: 300/311 looper letters, 34 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-08-29 19:59:16,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 48 transitions, 181 flow [2023-08-29 19:59:16,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:59:16,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:59:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2023-08-29 19:59:16,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3665594855305466 [2023-08-29 19:59:16,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2023-08-29 19:59:16,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2023-08-29 19:59:16,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:16,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2023-08-29 19:59:16,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:16,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:16,366 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:16,367 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 131 flow. Second operand 3 states and 342 transitions. [2023-08-29 19:59:16,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 48 transitions, 181 flow [2023-08-29 19:59:16,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 48 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 19:59:16,368 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 112 flow [2023-08-29 19:59:16,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2023-08-29 19:59:16,369 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -35 predicate places. [2023-08-29 19:59:16,369 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 112 flow [2023-08-29 19:59:16,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:16,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:16,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 19:59:16,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 19:59:16,370 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:16,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:16,370 INFO L85 PathProgramCache]: Analyzing trace with hash 34031837, now seen corresponding path program 1 times [2023-08-29 19:59:16,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:16,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629282371] [2023-08-29 19:59:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:16,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:16,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:16,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629282371] [2023-08-29 19:59:16,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629282371] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:16,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:16,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:59:16,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771338691] [2023-08-29 19:59:16,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:16,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:59:16,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:16,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:59:16,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:59:16,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 311 [2023-08-29 19:59:16,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:16,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:16,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 311 [2023-08-29 19:59:16,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:16,754 INFO L130 PetriNetUnfolder]: 1995/3351 cut-off events. [2023-08-29 19:59:16,754 INFO L131 PetriNetUnfolder]: For 134/134 co-relation queries the response was YES. [2023-08-29 19:59:16,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6347 conditions, 3351 events. 1995/3351 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 19922 event pairs, 1650 based on Foata normal form. 90/3002 useless extension candidates. Maximal degree in co-relation 6341. Up to 2820 conditions per place. [2023-08-29 19:59:16,765 INFO L137 encePairwiseOnDemand]: 302/311 looper letters, 26 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-29 19:59:16,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 40 transitions, 150 flow [2023-08-29 19:59:16,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:59:16,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:59:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2023-08-29 19:59:16,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3590568060021436 [2023-08-29 19:59:16,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2023-08-29 19:59:16,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2023-08-29 19:59:16,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:16,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2023-08-29 19:59:16,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:16,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:16,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:16,774 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 112 flow. Second operand 3 states and 335 transitions. [2023-08-29 19:59:16,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 40 transitions, 150 flow [2023-08-29 19:59:16,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 40 transitions, 149 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 19:59:16,775 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 97 flow [2023-08-29 19:59:16,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-08-29 19:59:16,777 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -42 predicate places. [2023-08-29 19:59:16,777 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 97 flow [2023-08-29 19:59:16,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:16,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:16,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 19:59:16,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 19:59:16,778 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:16,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:16,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1054988019, now seen corresponding path program 1 times [2023-08-29 19:59:16,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:16,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586223044] [2023-08-29 19:59:16,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:16,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:16,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:16,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586223044] [2023-08-29 19:59:16,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586223044] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:16,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:16,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:59:16,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238786603] [2023-08-29 19:59:16,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:16,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:59:16,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:16,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:59:16,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:59:16,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 311 [2023-08-29 19:59:16,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:16,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:16,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 311 [2023-08-29 19:59:16,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:17,253 INFO L130 PetriNetUnfolder]: 3000/4499 cut-off events. [2023-08-29 19:59:17,254 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-08-29 19:59:17,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8935 conditions, 4499 events. 3000/4499 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 25156 event pairs, 851 based on Foata normal form. 0/4010 useless extension candidates. Maximal degree in co-relation 8929. Up to 3957 conditions per place. [2023-08-29 19:59:17,281 INFO L137 encePairwiseOnDemand]: 307/311 looper letters, 39 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-08-29 19:59:17,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 208 flow [2023-08-29 19:59:17,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:59:17,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:59:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2023-08-29 19:59:17,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3322615219721329 [2023-08-29 19:59:17,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2023-08-29 19:59:17,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2023-08-29 19:59:17,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:17,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2023-08-29 19:59:17,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:17,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:17,287 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:17,287 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 97 flow. Second operand 3 states and 310 transitions. [2023-08-29 19:59:17,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 208 flow [2023-08-29 19:59:17,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 19:59:17,290 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 115 flow [2023-08-29 19:59:17,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-08-29 19:59:17,291 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -40 predicate places. [2023-08-29 19:59:17,291 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 115 flow [2023-08-29 19:59:17,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:17,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:17,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:17,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-29 19:59:17,292 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:17,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:17,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1207234227, now seen corresponding path program 1 times [2023-08-29 19:59:17,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:17,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324293354] [2023-08-29 19:59:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:17,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:17,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:17,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:17,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324293354] [2023-08-29 19:59:17,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324293354] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:17,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:17,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:59:17,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877922587] [2023-08-29 19:59:17,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:17,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:59:17,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:17,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:59:17,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:59:17,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 311 [2023-08-29 19:59:17,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 115 flow. Second operand has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:17,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:17,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 311 [2023-08-29 19:59:17,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:17,930 INFO L130 PetriNetUnfolder]: 4083/6060 cut-off events. [2023-08-29 19:59:17,930 INFO L131 PetriNetUnfolder]: For 662/662 co-relation queries the response was YES. [2023-08-29 19:59:17,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12711 conditions, 6060 events. 4083/6060 cut-off events. For 662/662 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 35640 event pairs, 887 based on Foata normal form. 48/5829 useless extension candidates. Maximal degree in co-relation 12704. Up to 4252 conditions per place. [2023-08-29 19:59:17,957 INFO L137 encePairwiseOnDemand]: 301/311 looper letters, 84 selfloop transitions, 17 changer transitions 0/109 dead transitions. [2023-08-29 19:59:17,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 109 transitions, 482 flow [2023-08-29 19:59:17,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 19:59:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 19:59:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 705 transitions. [2023-08-29 19:59:17,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3238401469912724 [2023-08-29 19:59:17,960 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 705 transitions. [2023-08-29 19:59:17,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 705 transitions. [2023-08-29 19:59:17,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:17,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 705 transitions. [2023-08-29 19:59:17,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.71428571428571) internal successors, (705), 7 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:17,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 311.0) internal successors, (2488), 8 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:17,965 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 311.0) internal successors, (2488), 8 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:17,965 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 115 flow. Second operand 7 states and 705 transitions. [2023-08-29 19:59:17,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 109 transitions, 482 flow [2023-08-29 19:59:17,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 109 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 19:59:17,968 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 231 flow [2023-08-29 19:59:17,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=231, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2023-08-29 19:59:17,969 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -31 predicate places. [2023-08-29 19:59:17,969 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 231 flow [2023-08-29 19:59:17,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:17,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:17,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:17,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 19:59:17,970 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:17,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:17,970 INFO L85 PathProgramCache]: Analyzing trace with hash 510924539, now seen corresponding path program 1 times [2023-08-29 19:59:17,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:17,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516803150] [2023-08-29 19:59:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:17,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:18,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:18,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516803150] [2023-08-29 19:59:18,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516803150] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:18,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:18,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:59:18,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377921535] [2023-08-29 19:59:18,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:18,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:59:18,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:18,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:59:18,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:59:18,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 311 [2023-08-29 19:59:18,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 231 flow. Second operand has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:18,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:18,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 311 [2023-08-29 19:59:18,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:18,828 INFO L130 PetriNetUnfolder]: 4841/7272 cut-off events. [2023-08-29 19:59:18,828 INFO L131 PetriNetUnfolder]: For 3935/3991 co-relation queries the response was YES. [2023-08-29 19:59:18,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18137 conditions, 7272 events. 4841/7272 cut-off events. For 3935/3991 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 44796 event pairs, 1086 based on Foata normal form. 108/7103 useless extension candidates. Maximal degree in co-relation 18126. Up to 3998 conditions per place. [2023-08-29 19:59:18,871 INFO L137 encePairwiseOnDemand]: 300/311 looper letters, 104 selfloop transitions, 23 changer transitions 0/135 dead transitions. [2023-08-29 19:59:18,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 135 transitions, 717 flow [2023-08-29 19:59:18,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 19:59:18,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 19:59:18,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 799 transitions. [2023-08-29 19:59:18,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32114147909967844 [2023-08-29 19:59:18,875 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 799 transitions. [2023-08-29 19:59:18,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 799 transitions. [2023-08-29 19:59:18,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:18,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 799 transitions. [2023-08-29 19:59:18,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 99.875) internal successors, (799), 8 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:18,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 311.0) internal successors, (2799), 9 states have internal predecessors, (2799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:18,881 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 311.0) internal successors, (2799), 9 states have internal predecessors, (2799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:18,882 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 231 flow. Second operand 8 states and 799 transitions. [2023-08-29 19:59:18,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 135 transitions, 717 flow [2023-08-29 19:59:18,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 135 transitions, 709 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-29 19:59:18,896 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 328 flow [2023-08-29 19:59:18,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=328, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-08-29 19:59:18,897 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -23 predicate places. [2023-08-29 19:59:18,897 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 328 flow [2023-08-29 19:59:18,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:18,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:18,898 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:18,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-29 19:59:18,898 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:18,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:18,899 INFO L85 PathProgramCache]: Analyzing trace with hash -933953182, now seen corresponding path program 1 times [2023-08-29 19:59:18,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:18,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051408164] [2023-08-29 19:59:18,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:18,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 19:59:18,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:18,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051408164] [2023-08-29 19:59:18,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051408164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:18,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:18,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:59:18,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758926184] [2023-08-29 19:59:18,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:18,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:59:18,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:18,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:59:18,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:59:18,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 311 [2023-08-29 19:59:18,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:18,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:18,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 311 [2023-08-29 19:59:18,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:19,593 INFO L130 PetriNetUnfolder]: 5485/8170 cut-off events. [2023-08-29 19:59:19,593 INFO L131 PetriNetUnfolder]: For 7577/7701 co-relation queries the response was YES. [2023-08-29 19:59:19,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22534 conditions, 8170 events. 5485/8170 cut-off events. For 7577/7701 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 51564 event pairs, 1059 based on Foata normal form. 48/7945 useless extension candidates. Maximal degree in co-relation 22520. Up to 6339 conditions per place. [2023-08-29 19:59:19,632 INFO L137 encePairwiseOnDemand]: 301/311 looper letters, 99 selfloop transitions, 25 changer transitions 0/133 dead transitions. [2023-08-29 19:59:19,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 133 transitions, 849 flow [2023-08-29 19:59:19,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 19:59:19,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 19:59:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 699 transitions. [2023-08-29 19:59:19,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210840606338999 [2023-08-29 19:59:19,634 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 699 transitions. [2023-08-29 19:59:19,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 699 transitions. [2023-08-29 19:59:19,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:19,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 699 transitions. [2023-08-29 19:59:19,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:19,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 311.0) internal successors, (2488), 8 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:19,639 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 311.0) internal successors, (2488), 8 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:19,639 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 328 flow. Second operand 7 states and 699 transitions. [2023-08-29 19:59:19,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 133 transitions, 849 flow [2023-08-29 19:59:19,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 133 transitions, 788 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-29 19:59:19,660 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 524 flow [2023-08-29 19:59:19,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=524, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2023-08-29 19:59:19,661 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -18 predicate places. [2023-08-29 19:59:19,661 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 524 flow [2023-08-29 19:59:19,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:19,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:19,662 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:19,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-29 19:59:19,662 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:19,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:19,662 INFO L85 PathProgramCache]: Analyzing trace with hash 119170062, now seen corresponding path program 1 times [2023-08-29 19:59:19,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:19,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463540936] [2023-08-29 19:59:19,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:19,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 19:59:19,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:19,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463540936] [2023-08-29 19:59:19,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463540936] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:19,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:19,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:59:19,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592540265] [2023-08-29 19:59:19,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:19,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:59:19,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:19,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:59:19,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:59:19,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 311 [2023-08-29 19:59:19,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 524 flow. Second operand has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:19,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:19,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 311 [2023-08-29 19:59:19,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:20,523 INFO L130 PetriNetUnfolder]: 6348/9535 cut-off events. [2023-08-29 19:59:20,523 INFO L131 PetriNetUnfolder]: For 14531/14563 co-relation queries the response was YES. [2023-08-29 19:59:20,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28363 conditions, 9535 events. 6348/9535 cut-off events. For 14531/14563 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 61806 event pairs, 1435 based on Foata normal form. 110/9388 useless extension candidates. Maximal degree in co-relation 28345. Up to 6094 conditions per place. [2023-08-29 19:59:20,579 INFO L137 encePairwiseOnDemand]: 300/311 looper letters, 121 selfloop transitions, 36 changer transitions 0/166 dead transitions. [2023-08-29 19:59:20,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 166 transitions, 1171 flow [2023-08-29 19:59:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 19:59:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 19:59:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 791 transitions. [2023-08-29 19:59:20,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3179260450160772 [2023-08-29 19:59:20,582 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 791 transitions. [2023-08-29 19:59:20,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 791 transitions. [2023-08-29 19:59:20,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:20,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 791 transitions. [2023-08-29 19:59:20,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 98.875) internal successors, (791), 8 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:20,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 311.0) internal successors, (2799), 9 states have internal predecessors, (2799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:20,588 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 311.0) internal successors, (2799), 9 states have internal predecessors, (2799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:20,588 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 524 flow. Second operand 8 states and 791 transitions. [2023-08-29 19:59:20,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 166 transitions, 1171 flow [2023-08-29 19:59:20,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 166 transitions, 1145 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-08-29 19:59:20,658 INFO L231 Difference]: Finished difference. Result has 83 places, 94 transitions, 706 flow [2023-08-29 19:59:20,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=706, PETRI_PLACES=83, PETRI_TRANSITIONS=94} [2023-08-29 19:59:20,659 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -9 predicate places. [2023-08-29 19:59:20,659 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 94 transitions, 706 flow [2023-08-29 19:59:20,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:20,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:20,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:20,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-29 19:59:20,660 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:20,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash 72986151, now seen corresponding path program 1 times [2023-08-29 19:59:20,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:20,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372445099] [2023-08-29 19:59:20,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:20,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:20,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:20,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:20,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372445099] [2023-08-29 19:59:20,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372445099] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:20,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:20,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 19:59:20,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697036471] [2023-08-29 19:59:20,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:20,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 19:59:20,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:20,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 19:59:20,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-29 19:59:20,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 311 [2023-08-29 19:59:20,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 94 transitions, 706 flow. Second operand has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:20,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:20,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 311 [2023-08-29 19:59:20,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:22,593 INFO L130 PetriNetUnfolder]: 10699/15680 cut-off events. [2023-08-29 19:59:22,593 INFO L131 PetriNetUnfolder]: For 41820/41954 co-relation queries the response was YES. [2023-08-29 19:59:22,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50012 conditions, 15680 events. 10699/15680 cut-off events. For 41820/41954 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 105242 event pairs, 1206 based on Foata normal form. 404/15745 useless extension candidates. Maximal degree in co-relation 49991. Up to 6484 conditions per place. [2023-08-29 19:59:22,727 INFO L137 encePairwiseOnDemand]: 297/311 looper letters, 207 selfloop transitions, 103 changer transitions 0/318 dead transitions. [2023-08-29 19:59:22,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 318 transitions, 2541 flow [2023-08-29 19:59:22,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-29 19:59:22,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-29 19:59:22,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1350 transitions. [2023-08-29 19:59:22,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3100597152044097 [2023-08-29 19:59:22,732 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1350 transitions. [2023-08-29 19:59:22,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1350 transitions. [2023-08-29 19:59:22,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:22,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1350 transitions. [2023-08-29 19:59:22,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 96.42857142857143) internal successors, (1350), 14 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:22,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 311.0) internal successors, (4665), 15 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:22,742 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 311.0) internal successors, (4665), 15 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:22,742 INFO L175 Difference]: Start difference. First operand has 83 places, 94 transitions, 706 flow. Second operand 14 states and 1350 transitions. [2023-08-29 19:59:22,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 318 transitions, 2541 flow [2023-08-29 19:59:22,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 318 transitions, 2348 flow, removed 36 selfloop flow, removed 5 redundant places. [2023-08-29 19:59:22,897 INFO L231 Difference]: Finished difference. Result has 100 places, 161 transitions, 1649 flow [2023-08-29 19:59:22,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1649, PETRI_PLACES=100, PETRI_TRANSITIONS=161} [2023-08-29 19:59:22,897 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 8 predicate places. [2023-08-29 19:59:22,897 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 161 transitions, 1649 flow [2023-08-29 19:59:22,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:22,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:22,898 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:22,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-29 19:59:22,898 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:22,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:22,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1326044919, now seen corresponding path program 1 times [2023-08-29 19:59:22,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:22,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922428301] [2023-08-29 19:59:22,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:22,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 19:59:22,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:22,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922428301] [2023-08-29 19:59:22,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922428301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:22,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:22,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 19:59:22,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988205153] [2023-08-29 19:59:22,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:22,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 19:59:22,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:22,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 19:59:22,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-29 19:59:23,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 311 [2023-08-29 19:59:23,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 161 transitions, 1649 flow. Second operand has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:23,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:23,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 311 [2023-08-29 19:59:23,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:25,184 INFO L130 PetriNetUnfolder]: 10921/16288 cut-off events. [2023-08-29 19:59:25,185 INFO L131 PetriNetUnfolder]: For 81006/81300 co-relation queries the response was YES. [2023-08-29 19:59:25,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63284 conditions, 16288 events. 10921/16288 cut-off events. For 81006/81300 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 113016 event pairs, 2009 based on Foata normal form. 86/16039 useless extension candidates. Maximal degree in co-relation 63255. Up to 12129 conditions per place. [2023-08-29 19:59:25,401 INFO L137 encePairwiseOnDemand]: 297/311 looper letters, 228 selfloop transitions, 71 changer transitions 0/307 dead transitions. [2023-08-29 19:59:25,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 307 transitions, 3247 flow [2023-08-29 19:59:25,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-29 19:59:25,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-29 19:59:25,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1330 transitions. [2023-08-29 19:59:25,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3054662379421222 [2023-08-29 19:59:25,405 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1330 transitions. [2023-08-29 19:59:25,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1330 transitions. [2023-08-29 19:59:25,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:25,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1330 transitions. [2023-08-29 19:59:25,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 95.0) internal successors, (1330), 14 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:25,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 311.0) internal successors, (4665), 15 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:25,414 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 311.0) internal successors, (4665), 15 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:25,414 INFO L175 Difference]: Start difference. First operand has 100 places, 161 transitions, 1649 flow. Second operand 14 states and 1330 transitions. [2023-08-29 19:59:25,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 307 transitions, 3247 flow [2023-08-29 19:59:25,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 307 transitions, 2955 flow, removed 94 selfloop flow, removed 6 redundant places. [2023-08-29 19:59:25,741 INFO L231 Difference]: Finished difference. Result has 112 places, 200 transitions, 2091 flow [2023-08-29 19:59:25,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2091, PETRI_PLACES=112, PETRI_TRANSITIONS=200} [2023-08-29 19:59:25,742 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 20 predicate places. [2023-08-29 19:59:25,742 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 200 transitions, 2091 flow [2023-08-29 19:59:25,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:25,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:25,743 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:25,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-29 19:59:25,743 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:25,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:25,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1285095159, now seen corresponding path program 2 times [2023-08-29 19:59:25,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:25,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241995956] [2023-08-29 19:59:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:25,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:25,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 19:59:25,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:25,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241995956] [2023-08-29 19:59:25,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241995956] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:25,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:25,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 19:59:25,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191385580] [2023-08-29 19:59:25,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:25,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 19:59:25,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:25,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 19:59:25,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-29 19:59:25,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 311 [2023-08-29 19:59:25,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 200 transitions, 2091 flow. Second operand has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:25,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:25,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 311 [2023-08-29 19:59:25,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:27,720 INFO L130 PetriNetUnfolder]: 11868/17545 cut-off events. [2023-08-29 19:59:27,721 INFO L131 PetriNetUnfolder]: For 100788/101328 co-relation queries the response was YES. [2023-08-29 19:59:27,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70678 conditions, 17545 events. 11868/17545 cut-off events. For 100788/101328 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 122421 event pairs, 2079 based on Foata normal form. 120/17314 useless extension candidates. Maximal degree in co-relation 70643. Up to 13122 conditions per place. [2023-08-29 19:59:27,934 INFO L137 encePairwiseOnDemand]: 297/311 looper letters, 261 selfloop transitions, 81 changer transitions 0/350 dead transitions. [2023-08-29 19:59:27,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 350 transitions, 3788 flow [2023-08-29 19:59:27,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-29 19:59:27,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-29 19:59:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1327 transitions. [2023-08-29 19:59:27,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30477721635277905 [2023-08-29 19:59:27,937 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1327 transitions. [2023-08-29 19:59:27,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1327 transitions. [2023-08-29 19:59:27,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:27,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1327 transitions. [2023-08-29 19:59:27,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 94.78571428571429) internal successors, (1327), 14 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:27,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 311.0) internal successors, (4665), 15 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:27,945 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 311.0) internal successors, (4665), 15 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:27,945 INFO L175 Difference]: Start difference. First operand has 112 places, 200 transitions, 2091 flow. Second operand 14 states and 1327 transitions. [2023-08-29 19:59:27,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 350 transitions, 3788 flow [2023-08-29 19:59:28,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 350 transitions, 3549 flow, removed 98 selfloop flow, removed 5 redundant places. [2023-08-29 19:59:28,469 INFO L231 Difference]: Finished difference. Result has 125 places, 234 transitions, 2504 flow [2023-08-29 19:59:28,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2504, PETRI_PLACES=125, PETRI_TRANSITIONS=234} [2023-08-29 19:59:28,470 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 33 predicate places. [2023-08-29 19:59:28,470 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 234 transitions, 2504 flow [2023-08-29 19:59:28,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:28,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:28,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:28,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-29 19:59:28,471 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:28,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:28,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1420157570, now seen corresponding path program 1 times [2023-08-29 19:59:28,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:28,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238478084] [2023-08-29 19:59:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:28,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:28,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:59:28,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:28,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238478084] [2023-08-29 19:59:28,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238478084] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:28,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:28,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 19:59:28,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924816982] [2023-08-29 19:59:28,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:28,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 19:59:28,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:28,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 19:59:28,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-29 19:59:28,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 311 [2023-08-29 19:59:28,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 234 transitions, 2504 flow. Second operand has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:28,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:28,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 311 [2023-08-29 19:59:28,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:31,238 INFO L130 PetriNetUnfolder]: 14778/21495 cut-off events. [2023-08-29 19:59:31,238 INFO L131 PetriNetUnfolder]: For 155080/155372 co-relation queries the response was YES. [2023-08-29 19:59:31,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89141 conditions, 21495 events. 14778/21495 cut-off events. For 155080/155372 co-relation queries the response was YES. Maximal size of possible extension queue 1141. Compared 148796 event pairs, 2044 based on Foata normal form. 250/21402 useless extension candidates. Maximal degree in co-relation 89101. Up to 8536 conditions per place. [2023-08-29 19:59:31,589 INFO L137 encePairwiseOnDemand]: 296/311 looper letters, 273 selfloop transitions, 179 changer transitions 9/470 dead transitions. [2023-08-29 19:59:31,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 470 transitions, 5042 flow [2023-08-29 19:59:31,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-29 19:59:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-29 19:59:31,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1505 transitions. [2023-08-29 19:59:31,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.302451768488746 [2023-08-29 19:59:31,592 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1505 transitions. [2023-08-29 19:59:31,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1505 transitions. [2023-08-29 19:59:31,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:31,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1505 transitions. [2023-08-29 19:59:31,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.0625) internal successors, (1505), 16 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:31,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 311.0) internal successors, (5287), 17 states have internal predecessors, (5287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:31,601 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 311.0) internal successors, (5287), 17 states have internal predecessors, (5287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:31,601 INFO L175 Difference]: Start difference. First operand has 125 places, 234 transitions, 2504 flow. Second operand 16 states and 1505 transitions. [2023-08-29 19:59:31,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 470 transitions, 5042 flow [2023-08-29 19:59:32,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 470 transitions, 4716 flow, removed 101 selfloop flow, removed 6 redundant places. [2023-08-29 19:59:32,333 INFO L231 Difference]: Finished difference. Result has 137 places, 269 transitions, 3159 flow [2023-08-29 19:59:32,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=2233, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3159, PETRI_PLACES=137, PETRI_TRANSITIONS=269} [2023-08-29 19:59:32,334 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 45 predicate places. [2023-08-29 19:59:32,334 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 269 transitions, 3159 flow [2023-08-29 19:59:32,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:32,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:32,335 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:32,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-29 19:59:32,335 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:32,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:32,336 INFO L85 PathProgramCache]: Analyzing trace with hash 744505279, now seen corresponding path program 1 times [2023-08-29 19:59:32,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:32,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686686515] [2023-08-29 19:59:32,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:32,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:32,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 19:59:32,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:32,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686686515] [2023-08-29 19:59:32,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686686515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:32,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:32,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 19:59:32,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46489856] [2023-08-29 19:59:32,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:32,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 19:59:32,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:32,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 19:59:32,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-29 19:59:32,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 311 [2023-08-29 19:59:32,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 269 transitions, 3159 flow. Second operand has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:32,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:32,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 311 [2023-08-29 19:59:32,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:35,114 INFO L130 PetriNetUnfolder]: 14878/22091 cut-off events. [2023-08-29 19:59:35,114 INFO L131 PetriNetUnfolder]: For 192818/193348 co-relation queries the response was YES. [2023-08-29 19:59:35,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98296 conditions, 22091 events. 14878/22091 cut-off events. For 192818/193348 co-relation queries the response was YES. Maximal size of possible extension queue 1201. Compared 158448 event pairs, 2390 based on Foata normal form. 376/22224 useless extension candidates. Maximal degree in co-relation 98253. Up to 10117 conditions per place. [2023-08-29 19:59:35,330 INFO L137 encePairwiseOnDemand]: 297/311 looper letters, 238 selfloop transitions, 222 changer transitions 0/469 dead transitions. [2023-08-29 19:59:35,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 469 transitions, 5862 flow [2023-08-29 19:59:35,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-29 19:59:35,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-29 19:59:35,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1403 transitions. [2023-08-29 19:59:35,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3007502679528403 [2023-08-29 19:59:35,332 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1403 transitions. [2023-08-29 19:59:35,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1403 transitions. [2023-08-29 19:59:35,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:35,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1403 transitions. [2023-08-29 19:59:35,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 93.53333333333333) internal successors, (1403), 15 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:35,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 311.0) internal successors, (4976), 16 states have internal predecessors, (4976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:35,338 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 311.0) internal successors, (4976), 16 states have internal predecessors, (4976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:35,338 INFO L175 Difference]: Start difference. First operand has 137 places, 269 transitions, 3159 flow. Second operand 15 states and 1403 transitions. [2023-08-29 19:59:35,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 469 transitions, 5862 flow [2023-08-29 19:59:36,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 469 transitions, 5626 flow, removed 37 selfloop flow, removed 10 redundant places. [2023-08-29 19:59:36,224 INFO L231 Difference]: Finished difference. Result has 147 places, 332 transitions, 4583 flow [2023-08-29 19:59:36,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=2950, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4583, PETRI_PLACES=147, PETRI_TRANSITIONS=332} [2023-08-29 19:59:36,225 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 55 predicate places. [2023-08-29 19:59:36,225 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 332 transitions, 4583 flow [2023-08-29 19:59:36,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:36,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:36,225 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:36,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-29 19:59:36,225 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:36,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:36,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1276106653, now seen corresponding path program 1 times [2023-08-29 19:59:36,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:36,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496707720] [2023-08-29 19:59:36,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:36,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 19:59:36,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:36,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496707720] [2023-08-29 19:59:36,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496707720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:36,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:36,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 19:59:36,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90666237] [2023-08-29 19:59:36,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:36,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 19:59:36,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:36,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 19:59:36,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-29 19:59:36,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 311 [2023-08-29 19:59:36,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 332 transitions, 4583 flow. Second operand has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:36,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:36,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 311 [2023-08-29 19:59:36,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:39,476 INFO L130 PetriNetUnfolder]: 16507/24690 cut-off events. [2023-08-29 19:59:39,477 INFO L131 PetriNetUnfolder]: For 279400/280124 co-relation queries the response was YES. [2023-08-29 19:59:39,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120064 conditions, 24690 events. 16507/24690 cut-off events. For 279400/280124 co-relation queries the response was YES. Maximal size of possible extension queue 1366. Compared 182314 event pairs, 2935 based on Foata normal form. 344/24733 useless extension candidates. Maximal degree in co-relation 120014. Up to 18080 conditions per place. [2023-08-29 19:59:39,887 INFO L137 encePairwiseOnDemand]: 297/311 looper letters, 360 selfloop transitions, 121 changer transitions 0/490 dead transitions. [2023-08-29 19:59:39,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 490 transitions, 7033 flow [2023-08-29 19:59:39,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-29 19:59:39,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-29 19:59:39,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1392 transitions. [2023-08-29 19:59:39,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29839228295819936 [2023-08-29 19:59:39,890 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1392 transitions. [2023-08-29 19:59:39,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1392 transitions. [2023-08-29 19:59:39,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:39,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1392 transitions. [2023-08-29 19:59:39,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 92.8) internal successors, (1392), 15 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:39,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 311.0) internal successors, (4976), 16 states have internal predecessors, (4976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:39,896 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 311.0) internal successors, (4976), 16 states have internal predecessors, (4976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:39,896 INFO L175 Difference]: Start difference. First operand has 147 places, 332 transitions, 4583 flow. Second operand 15 states and 1392 transitions. [2023-08-29 19:59:39,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 490 transitions, 7033 flow [2023-08-29 19:59:41,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 490 transitions, 6694 flow, removed 167 selfloop flow, removed 1 redundant places. [2023-08-29 19:59:41,721 INFO L231 Difference]: Finished difference. Result has 163 places, 364 transitions, 5269 flow [2023-08-29 19:59:41,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=4312, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5269, PETRI_PLACES=163, PETRI_TRANSITIONS=364} [2023-08-29 19:59:41,722 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 71 predicate places. [2023-08-29 19:59:41,722 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 364 transitions, 5269 flow [2023-08-29 19:59:41,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:41,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:41,723 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:41,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-29 19:59:41,723 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:41,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:41,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1761382533, now seen corresponding path program 2 times [2023-08-29 19:59:41,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:41,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821376521] [2023-08-29 19:59:41,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:41,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:41,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 19:59:41,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:41,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821376521] [2023-08-29 19:59:41,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821376521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:41,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:41,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:59:41,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7192970] [2023-08-29 19:59:41,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:41,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:59:41,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:41,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:59:41,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:59:41,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 311 [2023-08-29 19:59:41,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 364 transitions, 5269 flow. Second operand has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:41,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:41,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 311 [2023-08-29 19:59:41,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:46,104 INFO L130 PetriNetUnfolder]: 17329/25986 cut-off events. [2023-08-29 19:59:46,105 INFO L131 PetriNetUnfolder]: For 314996/315868 co-relation queries the response was YES. [2023-08-29 19:59:46,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128613 conditions, 25986 events. 17329/25986 cut-off events. For 314996/315868 co-relation queries the response was YES. Maximal size of possible extension queue 1447. Compared 193718 event pairs, 3669 based on Foata normal form. 278/25947 useless extension candidates. Maximal degree in co-relation 128559. Up to 21354 conditions per place. [2023-08-29 19:59:46,559 INFO L137 encePairwiseOnDemand]: 298/311 looper letters, 375 selfloop transitions, 76 changer transitions 0/466 dead transitions. [2023-08-29 19:59:46,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 466 transitions, 7083 flow [2023-08-29 19:59:46,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 19:59:46,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 19:59:46,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 963 transitions. [2023-08-29 19:59:46,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30964630225080386 [2023-08-29 19:59:46,561 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 963 transitions. [2023-08-29 19:59:46,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 963 transitions. [2023-08-29 19:59:46,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:46,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 963 transitions. [2023-08-29 19:59:46,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 96.3) internal successors, (963), 10 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:46,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 311.0) internal successors, (3421), 11 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:46,566 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 311.0) internal successors, (3421), 11 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:46,566 INFO L175 Difference]: Start difference. First operand has 163 places, 364 transitions, 5269 flow. Second operand 10 states and 963 transitions. [2023-08-29 19:59:46,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 466 transitions, 7083 flow [2023-08-29 19:59:48,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 466 transitions, 6746 flow, removed 103 selfloop flow, removed 10 redundant places. [2023-08-29 19:59:48,103 INFO L231 Difference]: Finished difference. Result has 165 places, 391 transitions, 5707 flow [2023-08-29 19:59:48,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=4935, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5707, PETRI_PLACES=165, PETRI_TRANSITIONS=391} [2023-08-29 19:59:48,104 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 73 predicate places. [2023-08-29 19:59:48,104 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 391 transitions, 5707 flow [2023-08-29 19:59:48,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:48,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:48,104 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:48,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-29 19:59:48,105 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:48,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:48,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1885941469, now seen corresponding path program 3 times [2023-08-29 19:59:48,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:48,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466440444] [2023-08-29 19:59:48,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:48,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 19:59:48,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:48,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466440444] [2023-08-29 19:59:48,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466440444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:48,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:48,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 19:59:48,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568998182] [2023-08-29 19:59:48,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:48,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 19:59:48,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:48,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 19:59:48,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-29 19:59:48,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 311 [2023-08-29 19:59:48,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 391 transitions, 5707 flow. Second operand has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:48,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:48,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 311 [2023-08-29 19:59:48,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:59:52,907 INFO L130 PetriNetUnfolder]: 19144/28519 cut-off events. [2023-08-29 19:59:52,907 INFO L131 PetriNetUnfolder]: For 378140/378980 co-relation queries the response was YES. [2023-08-29 19:59:53,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141432 conditions, 28519 events. 19144/28519 cut-off events. For 378140/378980 co-relation queries the response was YES. Maximal size of possible extension queue 1629. Compared 215311 event pairs, 4096 based on Foata normal form. 516/28726 useless extension candidates. Maximal degree in co-relation 141375. Up to 12410 conditions per place. [2023-08-29 19:59:53,421 INFO L137 encePairwiseOnDemand]: 297/311 looper letters, 264 selfloop transitions, 302 changer transitions 0/575 dead transitions. [2023-08-29 19:59:53,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 575 transitions, 8687 flow [2023-08-29 19:59:53,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-29 19:59:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-29 19:59:53,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1401 transitions. [2023-08-29 19:59:53,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30032154340836015 [2023-08-29 19:59:53,423 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1401 transitions. [2023-08-29 19:59:53,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1401 transitions. [2023-08-29 19:59:53,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:59:53,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1401 transitions. [2023-08-29 19:59:53,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 93.4) internal successors, (1401), 15 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:53,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 311.0) internal successors, (4976), 16 states have internal predecessors, (4976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:53,429 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 311.0) internal successors, (4976), 16 states have internal predecessors, (4976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:53,429 INFO L175 Difference]: Start difference. First operand has 165 places, 391 transitions, 5707 flow. Second operand 15 states and 1401 transitions. [2023-08-29 19:59:53,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 575 transitions, 8687 flow [2023-08-29 19:59:55,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 575 transitions, 8493 flow, removed 97 selfloop flow, removed 0 redundant places. [2023-08-29 19:59:55,168 INFO L231 Difference]: Finished difference. Result has 185 places, 438 transitions, 7400 flow [2023-08-29 19:59:55,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=5513, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7400, PETRI_PLACES=185, PETRI_TRANSITIONS=438} [2023-08-29 19:59:55,169 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 93 predicate places. [2023-08-29 19:59:55,169 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 438 transitions, 7400 flow [2023-08-29 19:59:55,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:55,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:59:55,170 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:59:55,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-29 19:59:55,170 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 19:59:55,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:59:55,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1705708296, now seen corresponding path program 1 times [2023-08-29 19:59:55,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:59:55,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466435162] [2023-08-29 19:59:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:59:55,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:59:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:59:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 19:59:55,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:59:55,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466435162] [2023-08-29 19:59:55,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466435162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:59:55,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:59:55,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 19:59:55,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714958096] [2023-08-29 19:59:55,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:59:55,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 19:59:55,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:59:55,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 19:59:55,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-29 19:59:55,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 311 [2023-08-29 19:59:55,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 438 transitions, 7400 flow. Second operand has 8 states, 8 states have (on average 82.125) internal successors, (657), 8 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:59:55,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:59:55,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 311 [2023-08-29 19:59:55,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:00:01,909 INFO L130 PetriNetUnfolder]: 25180/36547 cut-off events. [2023-08-29 20:00:01,909 INFO L131 PetriNetUnfolder]: For 561722/562806 co-relation queries the response was YES. [2023-08-29 20:00:02,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195302 conditions, 36547 events. 25180/36547 cut-off events. For 561722/562806 co-relation queries the response was YES. Maximal size of possible extension queue 2061. Compared 273116 event pairs, 2616 based on Foata normal form. 568/36746 useless extension candidates. Maximal degree in co-relation 195238. Up to 17252 conditions per place. [2023-08-29 20:00:02,649 INFO L137 encePairwiseOnDemand]: 296/311 looper letters, 410 selfloop transitions, 381 changer transitions 0/805 dead transitions. [2023-08-29 20:00:02,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 805 transitions, 13642 flow [2023-08-29 20:00:02,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-29 20:00:02,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-29 20:00:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1336 transitions. [2023-08-29 20:00:02,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30684428112080847 [2023-08-29 20:00:02,651 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1336 transitions. [2023-08-29 20:00:02,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1336 transitions. [2023-08-29 20:00:02,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:00:02,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1336 transitions. [2023-08-29 20:00:02,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 95.42857142857143) internal successors, (1336), 14 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:00:02,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 311.0) internal successors, (4665), 15 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:00:02,656 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 311.0) internal successors, (4665), 15 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:00:02,656 INFO L175 Difference]: Start difference. First operand has 185 places, 438 transitions, 7400 flow. Second operand 14 states and 1336 transitions. [2023-08-29 20:00:02,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 805 transitions, 13642 flow [2023-08-29 20:00:06,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 805 transitions, 13210 flow, removed 200 selfloop flow, removed 3 redundant places. [2023-08-29 20:00:06,360 INFO L231 Difference]: Finished difference. Result has 204 places, 607 transitions, 11635 flow [2023-08-29 20:00:06,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=7069, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11635, PETRI_PLACES=204, PETRI_TRANSITIONS=607} [2023-08-29 20:00:06,361 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 112 predicate places. [2023-08-29 20:00:06,361 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 607 transitions, 11635 flow [2023-08-29 20:00:06,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 82.125) internal successors, (657), 8 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:00:06,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:00:06,362 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:00:06,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-29 20:00:06,362 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:00:06,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:00:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash -70026827, now seen corresponding path program 1 times [2023-08-29 20:00:06,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:00:06,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851595276] [2023-08-29 20:00:06,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:00:06,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:00:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:00:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 20:00:06,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:00:06,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851595276] [2023-08-29 20:00:06,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851595276] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 20:00:06,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178886185] [2023-08-29 20:00:06,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:00:06,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 20:00:06,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:00:06,449 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 20:00:06,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 20:00:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:00:06,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 20:00:06,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:00:06,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 20:00:06,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 20:00:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 20:00:06,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178886185] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 20:00:06,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 20:00:06,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-29 20:00:06,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345921617] [2023-08-29 20:00:06,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 20:00:06,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 20:00:06,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:00:06,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 20:00:06,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-08-29 20:00:06,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 311 [2023-08-29 20:00:06,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 607 transitions, 11635 flow. Second operand has 13 states, 13 states have (on average 79.76923076923077) internal successors, (1037), 13 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:00:06,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:00:06,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 311 [2023-08-29 20:00:06,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:00:16,207 INFO L130 PetriNetUnfolder]: 26544/39391 cut-off events. [2023-08-29 20:00:16,207 INFO L131 PetriNetUnfolder]: For 847858/848940 co-relation queries the response was YES. [2023-08-29 20:00:16,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237583 conditions, 39391 events. 26544/39391 cut-off events. For 847858/848940 co-relation queries the response was YES. Maximal size of possible extension queue 2336. Compared 306235 event pairs, 4865 based on Foata normal form. 988/40029 useless extension candidates. Maximal degree in co-relation 237510. Up to 10202 conditions per place. [2023-08-29 20:00:16,946 INFO L137 encePairwiseOnDemand]: 296/311 looper letters, 422 selfloop transitions, 656 changer transitions 0/1088 dead transitions. [2023-08-29 20:00:16,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 1088 transitions, 20044 flow [2023-08-29 20:00:16,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-29 20:00:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-29 20:00:16,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3232 transitions. [2023-08-29 20:00:16,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2808725123837664 [2023-08-29 20:00:16,951 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3232 transitions. [2023-08-29 20:00:16,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3232 transitions. [2023-08-29 20:00:16,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:00:16,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3232 transitions. [2023-08-29 20:00:16,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 87.35135135135135) internal successors, (3232), 37 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:00:16,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 311.0) internal successors, (11818), 38 states have internal predecessors, (11818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:00:16,966 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 311.0) internal successors, (11818), 38 states have internal predecessors, (11818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:00:16,966 INFO L175 Difference]: Start difference. First operand has 204 places, 607 transitions, 11635 flow. Second operand 37 states and 3232 transitions. [2023-08-29 20:00:16,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 1088 transitions, 20044 flow [2023-08-29 20:00:22,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 1088 transitions, 19145 flow, removed 351 selfloop flow, removed 5 redundant places. [2023-08-29 20:00:22,090 INFO L231 Difference]: Finished difference. Result has 250 places, 765 transitions, 16362 flow [2023-08-29 20:00:22,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=11000, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=515, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=16362, PETRI_PLACES=250, PETRI_TRANSITIONS=765} [2023-08-29 20:00:22,090 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 158 predicate places. [2023-08-29 20:00:22,090 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 765 transitions, 16362 flow [2023-08-29 20:00:22,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 79.76923076923077) internal successors, (1037), 13 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:00:22,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:00:22,091 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:00:22,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-29 20:00:22,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 20:00:22,296 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:00:22,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:00:22,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1491784378, now seen corresponding path program 1 times [2023-08-29 20:00:22,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:00:22,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163189704] [2023-08-29 20:00:22,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:00:22,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:00:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:00:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 20:00:22,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:00:22,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163189704] [2023-08-29 20:00:22,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163189704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:00:22,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:00:22,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 20:00:22,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491829398] [2023-08-29 20:00:22,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:00:22,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 20:00:22,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:00:22,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 20:00:22,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-29 20:00:22,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 311 [2023-08-29 20:00:22,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 765 transitions, 16362 flow. Second operand has 9 states, 9 states have (on average 80.11111111111111) internal successors, (721), 9 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:00:22,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:00:22,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 311 [2023-08-29 20:00:22,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:00:35,026 INFO L130 PetriNetUnfolder]: 31955/46582 cut-off events. [2023-08-29 20:00:35,026 INFO L131 PetriNetUnfolder]: For 1185924/1187032 co-relation queries the response was YES. [2023-08-29 20:00:35,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303355 conditions, 46582 events. 31955/46582 cut-off events. For 1185924/1187032 co-relation queries the response was YES. Maximal size of possible extension queue 2771. Compared 360437 event pairs, 3236 based on Foata normal form. 744/46915 useless extension candidates. Maximal degree in co-relation 303267. Up to 20144 conditions per place. [2023-08-29 20:00:36,048 INFO L137 encePairwiseOnDemand]: 295/311 looper letters, 533 selfloop transitions, 550 changer transitions 62/1160 dead transitions. [2023-08-29 20:00:36,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 1160 transitions, 24898 flow [2023-08-29 20:00:36,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-29 20:00:36,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-29 20:00:36,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1581 transitions. [2023-08-29 20:00:36,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2990353697749196 [2023-08-29 20:00:36,052 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1581 transitions. [2023-08-29 20:00:36,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1581 transitions. [2023-08-29 20:00:36,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:00:36,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1581 transitions. [2023-08-29 20:00:36,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 93.0) internal successors, (1581), 17 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:00:36,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 311.0) internal successors, (5598), 18 states have internal predecessors, (5598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:00:36,059 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 311.0) internal successors, (5598), 18 states have internal predecessors, (5598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:00:36,059 INFO L175 Difference]: Start difference. First operand has 250 places, 765 transitions, 16362 flow. Second operand 17 states and 1581 transitions. [2023-08-29 20:00:36,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 1160 transitions, 24898 flow [2023-08-29 20:00:47,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 1160 transitions, 22337 flow, removed 1109 selfloop flow, removed 8 redundant places. [2023-08-29 20:00:47,934 INFO L231 Difference]: Finished difference. Result has 263 places, 843 transitions, 17977 flow [2023-08-29 20:00:47,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=14605, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=765, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=461, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=17977, PETRI_PLACES=263, PETRI_TRANSITIONS=843} [2023-08-29 20:00:47,935 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 171 predicate places. [2023-08-29 20:00:47,935 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 843 transitions, 17977 flow [2023-08-29 20:00:47,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.11111111111111) internal successors, (721), 9 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:00:47,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:00:47,936 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:00:47,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-29 20:00:47,936 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:00:47,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:00:47,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1517170315, now seen corresponding path program 1 times [2023-08-29 20:00:47,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:00:47,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908515406] [2023-08-29 20:00:47,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:00:47,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:00:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:00:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 20:00:48,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:00:48,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908515406] [2023-08-29 20:00:48,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908515406] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 20:00:48,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104722585] [2023-08-29 20:00:48,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:00:48,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 20:00:48,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:00:48,033 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 20:00:48,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 20:00:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:00:48,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 20:00:48,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:00:48,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 20:00:48,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 20:00:48,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 20:00:48,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104722585] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 20:00:48,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 20:00:48,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-29 20:00:48,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959813089] [2023-08-29 20:00:48,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 20:00:48,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 20:00:48,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:00:48,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 20:00:48,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-08-29 20:00:48,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 311 [2023-08-29 20:00:48,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 843 transitions, 17977 flow. Second operand has 14 states, 14 states have (on average 79.85714285714286) internal successors, (1118), 14 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:00:48,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:00:48,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 311 [2023-08-29 20:00:48,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:01:04,151 INFO L130 PetriNetUnfolder]: 38387/56236 cut-off events. [2023-08-29 20:01:04,151 INFO L131 PetriNetUnfolder]: For 1391813/1393041 co-relation queries the response was YES. [2023-08-29 20:01:05,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366537 conditions, 56236 events. 38387/56236 cut-off events. For 1391813/1393041 co-relation queries the response was YES. Maximal size of possible extension queue 3432. Compared 448472 event pairs, 3798 based on Foata normal form. 890/56969 useless extension candidates. Maximal degree in co-relation 366444. Up to 17573 conditions per place. [2023-08-29 20:01:05,450 INFO L137 encePairwiseOnDemand]: 295/311 looper letters, 592 selfloop transitions, 972 changer transitions 1/1573 dead transitions. [2023-08-29 20:01:05,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 1573 transitions, 33267 flow [2023-08-29 20:01:05,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-29 20:01:05,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-29 20:01:05,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3102 transitions. [2023-08-29 20:01:05,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28497932935231973 [2023-08-29 20:01:05,454 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3102 transitions. [2023-08-29 20:01:05,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3102 transitions. [2023-08-29 20:01:05,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:01:05,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3102 transitions. [2023-08-29 20:01:05,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 88.62857142857143) internal successors, (3102), 35 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:01:05,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 311.0) internal successors, (11196), 36 states have internal predecessors, (11196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:01:05,463 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 311.0) internal successors, (11196), 36 states have internal predecessors, (11196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:01:05,463 INFO L175 Difference]: Start difference. First operand has 263 places, 843 transitions, 17977 flow. Second operand 35 states and 3102 transitions. [2023-08-29 20:01:05,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 1573 transitions, 33267 flow [2023-08-29 20:01:19,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 1573 transitions, 32203 flow, removed 301 selfloop flow, removed 8 redundant places. [2023-08-29 20:01:19,681 INFO L231 Difference]: Finished difference. Result has 306 places, 1183 transitions, 28424 flow [2023-08-29 20:01:19,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=17408, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=843, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=668, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=28424, PETRI_PLACES=306, PETRI_TRANSITIONS=1183} [2023-08-29 20:01:19,682 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 214 predicate places. [2023-08-29 20:01:19,682 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 1183 transitions, 28424 flow [2023-08-29 20:01:19,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 79.85714285714286) internal successors, (1118), 14 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:01:19,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:01:19,683 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:01:19,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-29 20:01:19,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-08-29 20:01:19,884 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:01:19,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:01:19,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1856806109, now seen corresponding path program 1 times [2023-08-29 20:01:19,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:01:19,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480860841] [2023-08-29 20:01:19,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:01:19,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:01:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:01:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 20:01:19,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:01:19,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480860841] [2023-08-29 20:01:19,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480860841] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:01:19,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:01:19,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 20:01:19,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620625509] [2023-08-29 20:01:19,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:01:19,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 20:01:19,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:01:19,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 20:01:19,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-29 20:01:20,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 311 [2023-08-29 20:01:20,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 1183 transitions, 28424 flow. Second operand has 9 states, 9 states have (on average 81.22222222222223) internal successors, (731), 9 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:01:20,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:01:20,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 311 [2023-08-29 20:01:20,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:01:40,952 INFO L130 PetriNetUnfolder]: 41493/60664 cut-off events. [2023-08-29 20:01:40,953 INFO L131 PetriNetUnfolder]: For 1947828/1949174 co-relation queries the response was YES. [2023-08-29 20:01:42,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436833 conditions, 60664 events. 41493/60664 cut-off events. For 1947828/1949174 co-relation queries the response was YES. Maximal size of possible extension queue 3712. Compared 488249 event pairs, 7259 based on Foata normal form. 550/60818 useless extension candidates. Maximal degree in co-relation 436723. Up to 48509 conditions per place. [2023-08-29 20:01:42,702 INFO L137 encePairwiseOnDemand]: 295/311 looper letters, 1219 selfloop transitions, 311 changer transitions 0/1543 dead transitions. [2023-08-29 20:01:42,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 1543 transitions, 38492 flow [2023-08-29 20:01:42,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-29 20:01:42,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-29 20:01:42,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1814 transitions. [2023-08-29 20:01:42,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29163987138263664 [2023-08-29 20:01:42,705 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1814 transitions. [2023-08-29 20:01:42,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1814 transitions. [2023-08-29 20:01:42,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:01:42,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1814 transitions. [2023-08-29 20:01:42,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 90.7) internal successors, (1814), 20 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:01:42,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 311.0) internal successors, (6531), 21 states have internal predecessors, (6531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:01:42,712 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 311.0) internal successors, (6531), 21 states have internal predecessors, (6531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:01:42,712 INFO L175 Difference]: Start difference. First operand has 306 places, 1183 transitions, 28424 flow. Second operand 20 states and 1814 transitions. [2023-08-29 20:01:42,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 1543 transitions, 38492 flow [2023-08-29 20:02:12,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1543 transitions, 36986 flow, removed 632 selfloop flow, removed 4 redundant places. [2023-08-29 20:02:12,261 INFO L231 Difference]: Finished difference. Result has 328 places, 1307 transitions, 31411 flow [2023-08-29 20:02:12,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=27215, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=927, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=31411, PETRI_PLACES=328, PETRI_TRANSITIONS=1307} [2023-08-29 20:02:12,263 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 236 predicate places. [2023-08-29 20:02:12,266 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 1307 transitions, 31411 flow [2023-08-29 20:02:12,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.22222222222223) internal successors, (731), 9 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:02:12,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:02:12,267 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:02:12,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-29 20:02:12,267 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:02:12,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:02:12,268 INFO L85 PathProgramCache]: Analyzing trace with hash 524833643, now seen corresponding path program 2 times [2023-08-29 20:02:12,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:02:12,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477066790] [2023-08-29 20:02:12,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:02:12,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:02:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:02:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 20:02:12,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:02:12,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477066790] [2023-08-29 20:02:12,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477066790] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:02:12,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:02:12,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 20:02:12,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120350389] [2023-08-29 20:02:12,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:02:12,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 20:02:12,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:02:12,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 20:02:12,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-29 20:02:12,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 311 [2023-08-29 20:02:12,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 1307 transitions, 31411 flow. Second operand has 9 states, 9 states have (on average 81.22222222222223) internal successors, (731), 9 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:02:12,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:02:12,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 311 [2023-08-29 20:02:12,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:02:38,103 INFO L130 PetriNetUnfolder]: 43584/63861 cut-off events. [2023-08-29 20:02:38,103 INFO L131 PetriNetUnfolder]: For 1962725/1964051 co-relation queries the response was YES. [2023-08-29 20:02:39,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456449 conditions, 63861 events. 43584/63861 cut-off events. For 1962725/1964051 co-relation queries the response was YES. Maximal size of possible extension queue 3845. Compared 518710 event pairs, 7927 based on Foata normal form. 452/64063 useless extension candidates. Maximal degree in co-relation 456331. Up to 53135 conditions per place. [2023-08-29 20:02:39,791 INFO L137 encePairwiseOnDemand]: 296/311 looper letters, 1343 selfloop transitions, 279 changer transitions 0/1632 dead transitions. [2023-08-29 20:02:39,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1632 transitions, 40096 flow [2023-08-29 20:02:39,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-29 20:02:39,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-29 20:02:39,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2066 transitions. [2023-08-29 20:02:39,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2888298615965329 [2023-08-29 20:02:39,793 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2066 transitions. [2023-08-29 20:02:39,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2066 transitions. [2023-08-29 20:02:39,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:02:39,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2066 transitions. [2023-08-29 20:02:39,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 89.82608695652173) internal successors, (2066), 23 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:02:39,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 311.0) internal successors, (7464), 24 states have internal predecessors, (7464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:02:39,801 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 311.0) internal successors, (7464), 24 states have internal predecessors, (7464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:02:39,801 INFO L175 Difference]: Start difference. First operand has 328 places, 1307 transitions, 31411 flow. Second operand 23 states and 2066 transitions. [2023-08-29 20:02:39,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1632 transitions, 40096 flow [2023-08-29 20:03:10,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 1632 transitions, 39369 flow, removed 244 selfloop flow, removed 8 redundant places. [2023-08-29 20:03:10,690 INFO L231 Difference]: Finished difference. Result has 352 places, 1399 transitions, 34114 flow [2023-08-29 20:03:10,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=30784, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1032, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=34114, PETRI_PLACES=352, PETRI_TRANSITIONS=1399} [2023-08-29 20:03:10,692 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 260 predicate places. [2023-08-29 20:03:10,692 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 1399 transitions, 34114 flow [2023-08-29 20:03:10,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.22222222222223) internal successors, (731), 9 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:03:10,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:03:10,693 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:03:10,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-29 20:03:10,693 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:03:10,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:03:10,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1637091773, now seen corresponding path program 3 times [2023-08-29 20:03:10,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:03:10,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149016798] [2023-08-29 20:03:10,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:03:10,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:03:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:03:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 20:03:10,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:03:10,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149016798] [2023-08-29 20:03:10,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149016798] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:03:10,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:03:10,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 20:03:10,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423947336] [2023-08-29 20:03:10,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:03:10,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 20:03:10,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:03:10,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 20:03:10,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-29 20:03:10,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 311 [2023-08-29 20:03:10,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 1399 transitions, 34114 flow. Second operand has 8 states, 8 states have (on average 81.375) internal successors, (651), 8 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:03:10,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:03:10,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 311 [2023-08-29 20:03:10,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:03:36,067 INFO L130 PetriNetUnfolder]: 44237/64868 cut-off events. [2023-08-29 20:03:36,067 INFO L131 PetriNetUnfolder]: For 2106555/2107967 co-relation queries the response was YES. [2023-08-29 20:03:38,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472189 conditions, 64868 events. 44237/64868 cut-off events. For 2106555/2107967 co-relation queries the response was YES. Maximal size of possible extension queue 3904. Compared 527861 event pairs, 4148 based on Foata normal form. 778/65292 useless extension candidates. Maximal degree in co-relation 472060. Up to 37943 conditions per place. [2023-08-29 20:03:38,436 INFO L137 encePairwiseOnDemand]: 296/311 looper letters, 793 selfloop transitions, 860 changer transitions 0/1671 dead transitions. [2023-08-29 20:03:38,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 1671 transitions, 41251 flow [2023-08-29 20:03:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-29 20:03:38,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-29 20:03:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1734 transitions. [2023-08-29 20:03:38,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29345066847182266 [2023-08-29 20:03:38,438 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1734 transitions. [2023-08-29 20:03:38,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1734 transitions. [2023-08-29 20:03:38,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:03:38,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1734 transitions. [2023-08-29 20:03:38,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 91.26315789473684) internal successors, (1734), 19 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:03:38,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 311.0) internal successors, (6220), 20 states have internal predecessors, (6220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:03:38,443 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 311.0) internal successors, (6220), 20 states have internal predecessors, (6220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:03:38,443 INFO L175 Difference]: Start difference. First operand has 352 places, 1399 transitions, 34114 flow. Second operand 19 states and 1734 transitions. [2023-08-29 20:03:38,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 1671 transitions, 41251 flow [2023-08-29 20:04:09,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 1671 transitions, 40613 flow, removed 138 selfloop flow, removed 10 redundant places. [2023-08-29 20:04:09,595 INFO L231 Difference]: Finished difference. Result has 368 places, 1474 transitions, 38774 flow [2023-08-29 20:04:09,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=33510, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=785, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=38774, PETRI_PLACES=368, PETRI_TRANSITIONS=1474} [2023-08-29 20:04:09,597 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 276 predicate places. [2023-08-29 20:04:09,597 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 1474 transitions, 38774 flow [2023-08-29 20:04:09,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 81.375) internal successors, (651), 8 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:04:09,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:04:09,597 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:04:09,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-29 20:04:09,598 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:04:09,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:04:09,598 INFO L85 PathProgramCache]: Analyzing trace with hash -856575031, now seen corresponding path program 2 times [2023-08-29 20:04:09,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:04:09,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153181226] [2023-08-29 20:04:09,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:04:09,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:04:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:04:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 20:04:09,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:04:09,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153181226] [2023-08-29 20:04:09,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153181226] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 20:04:09,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731022578] [2023-08-29 20:04:09,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 20:04:09,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 20:04:09,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:04:09,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 20:04:09,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 20:04:09,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 20:04:09,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 20:04:09,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-29 20:04:09,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:04:09,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 20:04:09,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 20:04:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 20:04:09,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731022578] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 20:04:09,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 20:04:09,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2023-08-29 20:04:09,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704128497] [2023-08-29 20:04:09,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 20:04:09,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 20:04:09,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:04:09,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 20:04:09,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-29 20:04:09,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 311 [2023-08-29 20:04:09,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 1474 transitions, 38774 flow. Second operand has 8 states, 8 states have (on average 81.375) internal successors, (651), 8 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:04:09,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:04:09,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 311 [2023-08-29 20:04:09,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:04:38,940 INFO L130 PetriNetUnfolder]: 47346/69495 cut-off events. [2023-08-29 20:04:38,941 INFO L131 PetriNetUnfolder]: For 2640222/2641916 co-relation queries the response was YES. [2023-08-29 20:04:40,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535443 conditions, 69495 events. 47346/69495 cut-off events. For 2640222/2641916 co-relation queries the response was YES. Maximal size of possible extension queue 4235. Compared 570744 event pairs, 3928 based on Foata normal form. 848/69735 useless extension candidates. Maximal degree in co-relation 535307. Up to 39586 conditions per place. [2023-08-29 20:04:41,485 INFO L137 encePairwiseOnDemand]: 295/311 looper letters, 827 selfloop transitions, 946 changer transitions 0/1802 dead transitions. [2023-08-29 20:04:41,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 1802 transitions, 48103 flow [2023-08-29 20:04:41,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-29 20:04:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-29 20:04:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1825 transitions. [2023-08-29 20:04:41,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2934083601286174 [2023-08-29 20:04:41,488 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1825 transitions. [2023-08-29 20:04:41,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1825 transitions. [2023-08-29 20:04:41,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:04:41,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1825 transitions. [2023-08-29 20:04:41,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 91.25) internal successors, (1825), 20 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:04:41,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 311.0) internal successors, (6531), 21 states have internal predecessors, (6531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:04:41,495 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 311.0) internal successors, (6531), 21 states have internal predecessors, (6531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:04:41,496 INFO L175 Difference]: Start difference. First operand has 368 places, 1474 transitions, 38774 flow. Second operand 20 states and 1825 transitions. [2023-08-29 20:04:41,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 1802 transitions, 48103 flow [2023-08-29 20:05:22,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 1802 transitions, 47748 flow, removed 88 selfloop flow, removed 7 redundant places. [2023-08-29 20:05:22,726 INFO L231 Difference]: Finished difference. Result has 392 places, 1608 transitions, 46032 flow [2023-08-29 20:05:22,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=38433, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=820, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=46032, PETRI_PLACES=392, PETRI_TRANSITIONS=1608} [2023-08-29 20:05:22,728 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 300 predicate places. [2023-08-29 20:05:22,728 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 1608 transitions, 46032 flow [2023-08-29 20:05:22,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 81.375) internal successors, (651), 8 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:05:22,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:05:22,729 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:05:22,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 20:05:22,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 20:05:22,934 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:05:22,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:05:22,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2118258149, now seen corresponding path program 3 times [2023-08-29 20:05:22,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:05:22,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371141558] [2023-08-29 20:05:22,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:05:22,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:05:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:05:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 20:05:23,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:05:23,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371141558] [2023-08-29 20:05:23,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371141558] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:05:23,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:05:23,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 20:05:23,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101776183] [2023-08-29 20:05:23,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:05:23,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 20:05:23,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:05:23,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 20:05:23,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-29 20:05:23,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 311 [2023-08-29 20:05:23,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 1608 transitions, 46032 flow. Second operand has 8 states, 8 states have (on average 81.5) internal successors, (652), 8 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:05:23,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:05:23,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 311 [2023-08-29 20:05:23,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:05:57,209 INFO L130 PetriNetUnfolder]: 49975/73298 cut-off events. [2023-08-29 20:05:57,209 INFO L131 PetriNetUnfolder]: For 3272162/3273732 co-relation queries the response was YES. [2023-08-29 20:05:59,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601797 conditions, 73298 events. 49975/73298 cut-off events. For 3272162/3273732 co-relation queries the response was YES. Maximal size of possible extension queue 4457. Compared 603607 event pairs, 8830 based on Foata normal form. 724/73554 useless extension candidates. Maximal degree in co-relation 601653. Up to 45055 conditions per place. [2023-08-29 20:05:59,981 INFO L137 encePairwiseOnDemand]: 295/311 looper letters, 1236 selfloop transitions, 757 changer transitions 0/2013 dead transitions. [2023-08-29 20:05:59,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 2013 transitions, 59827 flow [2023-08-29 20:05:59,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-29 20:05:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-29 20:05:59,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1809 transitions. [2023-08-29 20:05:59,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2908360128617363 [2023-08-29 20:05:59,984 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1809 transitions. [2023-08-29 20:05:59,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1809 transitions. [2023-08-29 20:05:59,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:05:59,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1809 transitions. [2023-08-29 20:05:59,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 90.45) internal successors, (1809), 20 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:05:59,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 311.0) internal successors, (6531), 21 states have internal predecessors, (6531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:05:59,991 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 311.0) internal successors, (6531), 21 states have internal predecessors, (6531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:05:59,991 INFO L175 Difference]: Start difference. First operand has 392 places, 1608 transitions, 46032 flow. Second operand 20 states and 1809 transitions. [2023-08-29 20:05:59,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 2013 transitions, 59827 flow [2023-08-29 20:06:49,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 2013 transitions, 59117 flow, removed 248 selfloop flow, removed 8 redundant places. [2023-08-29 20:06:49,202 INFO L231 Difference]: Finished difference. Result has 410 places, 1739 transitions, 51778 flow [2023-08-29 20:06:49,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=45359, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=642, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=897, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=51778, PETRI_PLACES=410, PETRI_TRANSITIONS=1739} [2023-08-29 20:06:49,203 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 318 predicate places. [2023-08-29 20:06:49,203 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 1739 transitions, 51778 flow [2023-08-29 20:06:49,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 81.5) internal successors, (652), 8 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:06:49,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:06:49,204 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:06:49,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-29 20:06:49,204 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:06:49,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:06:49,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1316787869, now seen corresponding path program 4 times [2023-08-29 20:06:49,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:06:49,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082553397] [2023-08-29 20:06:49,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:06:49,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:06:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:06:49,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 20:06:49,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:06:49,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082553397] [2023-08-29 20:06:49,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082553397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:06:49,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:06:49,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 20:06:49,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776942311] [2023-08-29 20:06:49,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:06:49,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 20:06:49,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:06:49,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 20:06:49,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-29 20:06:49,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 311 [2023-08-29 20:06:49,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 1739 transitions, 51778 flow. Second operand has 9 states, 9 states have (on average 79.22222222222223) internal successors, (713), 9 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:06:49,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:06:49,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 311 [2023-08-29 20:06:49,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:07:24,086 INFO L130 PetriNetUnfolder]: 50172/73644 cut-off events. [2023-08-29 20:07:24,086 INFO L131 PetriNetUnfolder]: For 3448260/3449764 co-relation queries the response was YES. [2023-08-29 20:07:26,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624031 conditions, 73644 events. 50172/73644 cut-off events. For 3448260/3449764 co-relation queries the response was YES. Maximal size of possible extension queue 4499. Compared 607439 event pairs, 4053 based on Foata normal form. 890/73963 useless extension candidates. Maximal degree in co-relation 623879. Up to 28363 conditions per place. [2023-08-29 20:07:26,579 INFO L137 encePairwiseOnDemand]: 294/311 looper letters, 750 selfloop transitions, 1405 changer transitions 2/2177 dead transitions. [2023-08-29 20:07:26,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 2177 transitions, 65304 flow [2023-08-29 20:07:26,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-29 20:07:26,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-29 20:07:26,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2142 transitions. [2023-08-29 20:07:26,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2869774919614148 [2023-08-29 20:07:26,582 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2142 transitions. [2023-08-29 20:07:26,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2142 transitions. [2023-08-29 20:07:26,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:07:26,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2142 transitions. [2023-08-29 20:07:26,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 89.25) internal successors, (2142), 24 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:07:26,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 311.0) internal successors, (7775), 25 states have internal predecessors, (7775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:07:26,589 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 311.0) internal successors, (7775), 25 states have internal predecessors, (7775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:07:26,590 INFO L175 Difference]: Start difference. First operand has 410 places, 1739 transitions, 51778 flow. Second operand 24 states and 2142 transitions. [2023-08-29 20:07:26,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 2177 transitions, 65304 flow [2023-08-29 20:08:16,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 2177 transitions, 64227 flow, removed 247 selfloop flow, removed 10 redundant places. [2023-08-29 20:08:16,863 INFO L231 Difference]: Finished difference. Result has 432 places, 1889 transitions, 59436 flow [2023-08-29 20:08:16,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=50762, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=59436, PETRI_PLACES=432, PETRI_TRANSITIONS=1889} [2023-08-29 20:08:16,864 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 340 predicate places. [2023-08-29 20:08:16,865 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 1889 transitions, 59436 flow [2023-08-29 20:08:16,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.22222222222223) internal successors, (713), 9 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:08:16,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:08:16,865 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:08:16,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-29 20:08:16,865 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:08:16,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:08:16,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1103248163, now seen corresponding path program 5 times [2023-08-29 20:08:16,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:08:16,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447435883] [2023-08-29 20:08:16,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:08:16,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:08:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:08:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 20:08:17,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:08:17,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447435883] [2023-08-29 20:08:17,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447435883] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:08:17,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:08:17,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 20:08:17,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295761343] [2023-08-29 20:08:17,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:08:17,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 20:08:17,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:08:17,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 20:08:17,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-29 20:08:17,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 311 [2023-08-29 20:08:17,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 1889 transitions, 59436 flow. Second operand has 9 states, 9 states have (on average 81.22222222222223) internal successors, (731), 9 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:08:17,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:08:17,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 311 [2023-08-29 20:08:17,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:08:55,588 INFO L130 PetriNetUnfolder]: 53016/77675 cut-off events. [2023-08-29 20:08:55,589 INFO L131 PetriNetUnfolder]: For 4153774/4155408 co-relation queries the response was YES. [2023-08-29 20:08:57,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693643 conditions, 77675 events. 53016/77675 cut-off events. For 4153774/4155408 co-relation queries the response was YES. Maximal size of possible extension queue 4713. Compared 643766 event pairs, 8902 based on Foata normal form. 716/77809 useless extension candidates. Maximal degree in co-relation 693483. Up to 64379 conditions per place. [2023-08-29 20:08:58,715 INFO L137 encePairwiseOnDemand]: 295/311 looper letters, 1882 selfloop transitions, 355 changer transitions 0/2257 dead transitions. [2023-08-29 20:08:58,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 2257 transitions, 73118 flow [2023-08-29 20:08:58,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-29 20:08:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-29 20:08:58,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2237 transitions. [2023-08-29 20:08:58,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2877170418006431 [2023-08-29 20:08:58,717 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2237 transitions. [2023-08-29 20:08:58,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2237 transitions. [2023-08-29 20:08:58,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:08:58,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2237 transitions. [2023-08-29 20:08:58,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 89.48) internal successors, (2237), 25 states have internal predecessors, (2237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:08:58,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 311.0) internal successors, (8086), 26 states have internal predecessors, (8086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:08:58,723 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 311.0) internal successors, (8086), 26 states have internal predecessors, (8086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:08:58,723 INFO L175 Difference]: Start difference. First operand has 432 places, 1889 transitions, 59436 flow. Second operand 25 states and 2237 transitions. [2023-08-29 20:08:58,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 2257 transitions, 73118 flow [2023-08-29 20:10:07,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 2257 transitions, 71797 flow, removed 441 selfloop flow, removed 11 redundant places. [2023-08-29 20:10:07,972 INFO L231 Difference]: Finished difference. Result has 452 places, 2021 transitions, 64094 flow [2023-08-29 20:10:07,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=58294, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1889, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=64094, PETRI_PLACES=452, PETRI_TRANSITIONS=2021} [2023-08-29 20:10:07,973 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 360 predicate places. [2023-08-29 20:10:07,973 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 2021 transitions, 64094 flow [2023-08-29 20:10:07,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.22222222222223) internal successors, (731), 9 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:10:07,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:10:07,974 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:10:07,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-29 20:10:07,974 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:10:07,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:10:07,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1944796336, now seen corresponding path program 1 times [2023-08-29 20:10:07,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:10:07,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289038333] [2023-08-29 20:10:07,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:10:07,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:10:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:10:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 20:10:08,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:10:08,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289038333] [2023-08-29 20:10:08,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289038333] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 20:10:08,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061912279] [2023-08-29 20:10:08,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:10:08,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 20:10:08,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:10:08,076 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 20:10:08,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 20:10:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:10:08,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 20:10:08,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:10:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 20:10:08,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 20:10:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 20:10:08,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061912279] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 20:10:08,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 20:10:08,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-08-29 20:10:08,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303540926] [2023-08-29 20:10:08,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 20:10:08,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-29 20:10:08,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:10:08,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-29 20:10:08,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-08-29 20:10:08,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 311 [2023-08-29 20:10:08,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 2021 transitions, 64094 flow. Second operand has 17 states, 17 states have (on average 77.58823529411765) internal successors, (1319), 17 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:10:08,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:10:08,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 311 [2023-08-29 20:10:08,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:11:03,523 INFO L130 PetriNetUnfolder]: 67105/96672 cut-off events. [2023-08-29 20:11:03,523 INFO L131 PetriNetUnfolder]: For 5632376/5633282 co-relation queries the response was YES. [2023-08-29 20:11:07,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862784 conditions, 96672 events. 67105/96672 cut-off events. For 5632376/5633282 co-relation queries the response was YES. Maximal size of possible extension queue 5589. Compared 790401 event pairs, 6454 based on Foata normal form. 518/97107 useless extension candidates. Maximal degree in co-relation 862616. Up to 23406 conditions per place. [2023-08-29 20:11:07,881 INFO L137 encePairwiseOnDemand]: 294/311 looper letters, 1040 selfloop transitions, 2038 changer transitions 147/3244 dead transitions. [2023-08-29 20:11:07,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 3244 transitions, 101841 flow [2023-08-29 20:11:07,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-29 20:11:07,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-29 20:11:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3787 transitions. [2023-08-29 20:11:07,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27674656533177433 [2023-08-29 20:11:07,886 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3787 transitions. [2023-08-29 20:11:07,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3787 transitions. [2023-08-29 20:11:07,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:11:07,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3787 transitions. [2023-08-29 20:11:07,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 86.06818181818181) internal successors, (3787), 44 states have internal predecessors, (3787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:11:07,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 311.0) internal successors, (13995), 45 states have internal predecessors, (13995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:11:07,899 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 311.0) internal successors, (13995), 45 states have internal predecessors, (13995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:11:07,899 INFO L175 Difference]: Start difference. First operand has 452 places, 2021 transitions, 64094 flow. Second operand 44 states and 3787 transitions. [2023-08-29 20:11:07,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 3244 transitions, 101841 flow