./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 TOGETHER --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 TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 02:35:51,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 02:35:51,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 02:35:51,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 02:35:51,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 02:35:51,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 02:35:51,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 02:35:51,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 02:35:51,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 02:35:51,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 02:35:51,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 02:35:51,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 02:35:51,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 02:35:51,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 02:35:51,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 02:35:51,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 02:35:51,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 02:35:51,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 02:35:51,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 02:35:51,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 02:35:51,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 02:35:51,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 02:35:51,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 02:35:51,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 02:35:51,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 02:35:51,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 02:35:51,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 02:35:51,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 02:35:51,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 02:35:51,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 02:35:51,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 02:35:51,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 02:35:51,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 02:35:51,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 02:35:51,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 02:35:51,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 02:35:51,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 02:35:51,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 02:35:51,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 02:35:51,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 02:35:51,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 02:35:51,396 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 02:35:51,426 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 02:35:51,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 02:35:51,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 02:35:51,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 02:35:51,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 02:35:51,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 02:35:51,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 02:35:51,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 02:35:51,430 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 02:35:51,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 02:35:51,431 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 02:35:51,431 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 02:35:51,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 02:35:51,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 02:35:51,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 02:35:51,431 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 02:35:51,432 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 02:35:51,432 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 02:35:51,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 02:35:51,432 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 02:35:51,432 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 02:35:51,432 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 02:35:51,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 02:35:51,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 02:35:51,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 02:35:51,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:35:51,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 02:35:51,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 02:35:51,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 02:35:51,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 02:35:51,434 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 02:35:51,434 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 02:35:51,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 02:35:51,435 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 02:35:51,435 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 02:35:51,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 02:35:51,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 02:35:51,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 02:35:51,793 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 02:35:51,794 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 02:35:51,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-08-30 02:35:52,998 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 02:35:53,241 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 02:35:53,241 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-08-30 02:35:53,253 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71ca891c5/98b93197b55d404ca46ed9ba214bcdf2/FLAG0fa644ff8 [2023-08-30 02:35:53,266 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71ca891c5/98b93197b55d404ca46ed9ba214bcdf2 [2023-08-30 02:35:53,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 02:35:53,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 02:35:53,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 02:35:53,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 02:35:53,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 02:35:53,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:35:53" (1/1) ... [2023-08-30 02:35:53,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5f5bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:53, skipping insertion in model container [2023-08-30 02:35:53,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:35:53" (1/1) ... [2023-08-30 02:35:53,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 02:35:53,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 02:35:53,669 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] [2023-08-30 02:35:53,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:35:53,689 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 02:35:53,730 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] [2023-08-30 02:35:53,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:35:53,781 INFO L208 MainTranslator]: Completed translation [2023-08-30 02:35:53,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:53 WrapperNode [2023-08-30 02:35:53,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 02:35:53,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 02:35:53,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 02:35:53,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 02:35:53,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:53" (1/1) ... [2023-08-30 02:35:53,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:53" (1/1) ... [2023-08-30 02:35:53,849 INFO L138 Inliner]: procedures = 172, calls = 27, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 126 [2023-08-30 02:35:53,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 02:35:53,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 02:35:53,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 02:35:53,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 02:35:53,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:53" (1/1) ... [2023-08-30 02:35:53,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:53" (1/1) ... [2023-08-30 02:35:53,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:53" (1/1) ... [2023-08-30 02:35:53,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:53" (1/1) ... [2023-08-30 02:35:53,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:53" (1/1) ... [2023-08-30 02:35:53,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:53" (1/1) ... [2023-08-30 02:35:53,905 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:53" (1/1) ... [2023-08-30 02:35:53,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:53" (1/1) ... [2023-08-30 02:35:53,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 02:35:53,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 02:35:53,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 02:35:53,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 02:35:53,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:53" (1/1) ... [2023-08-30 02:35:53,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:35:53,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:35:53,945 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) [2023-08-30 02:35:53,953 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 [2023-08-30 02:35:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 02:35:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-30 02:35:53,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-30 02:35:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 02:35:53,978 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 02:35:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 02:35:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 02:35:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 02:35:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 02:35:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 02:35:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 02:35:53,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 02:35:53,981 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 02:35:54,087 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 02:35:54,089 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 02:35:54,434 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 02:35:54,629 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 02:35:54,630 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 02:35:54,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:35:54 BoogieIcfgContainer [2023-08-30 02:35:54,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 02:35:54,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 02:35:54,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 02:35:54,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 02:35:54,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:35:53" (1/3) ... [2023-08-30 02:35:54,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b03efd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:35:54, skipping insertion in model container [2023-08-30 02:35:54,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:53" (2/3) ... [2023-08-30 02:35:54,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b03efd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:35:54, skipping insertion in model container [2023-08-30 02:35:54,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:35:54" (3/3) ... [2023-08-30 02:35:54,640 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2023-08-30 02:35:54,656 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 02:35:54,656 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-30 02:35:54,657 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 02:35:54,750 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:35:54,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 108 transitions, 226 flow [2023-08-30 02:35:54,834 INFO L130 PetriNetUnfolder]: 6/122 cut-off events. [2023-08-30 02:35:54,834 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:35:54,840 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. [2023-08-30 02:35:54,840 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 108 transitions, 226 flow [2023-08-30 02:35:54,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 107 transitions, 222 flow [2023-08-30 02:35:54,848 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:35:54,863 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 107 transitions, 222 flow [2023-08-30 02:35:54,867 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 107 transitions, 222 flow [2023-08-30 02:35:54,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 107 transitions, 222 flow [2023-08-30 02:35:54,913 INFO L130 PetriNetUnfolder]: 6/122 cut-off events. [2023-08-30 02:35:54,913 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:35:54,915 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. [2023-08-30 02:35:54,919 INFO L119 LiptonReduction]: Number of co-enabled transitions 4236 [2023-08-30 02:35:57,625 INFO L134 LiptonReduction]: Checked pairs total: 10655 [2023-08-30 02:35:57,625 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-30 02:35:57,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:35:57,642 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;@27ccea74, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:35:57,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2023-08-30 02:35:57,644 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 02:35:57,644 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:35:57,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:35:57,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 02:35:57,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-08-30 02:35:57,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:35:57,650 INFO L85 PathProgramCache]: Analyzing trace with hash 642, now seen corresponding path program 1 times [2023-08-30 02:35:57,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:35:57,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788830786] [2023-08-30 02:35:57,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:35:57,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:35:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:35:57,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:35:57,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:35:57,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788830786] [2023-08-30 02:35:57,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788830786] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:35:57,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:35:57,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 02:35:57,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918897691] [2023-08-30 02:35:57,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:35:57,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:35:57,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:35:57,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:35:57,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:35:57,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 206 [2023-08-30 02:35:57,811 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) [2023-08-30 02:35:57,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:35:57,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 206 [2023-08-30 02:35:57,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:35:58,073 INFO L130 PetriNetUnfolder]: 1418/2191 cut-off events. [2023-08-30 02:35:58,074 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 02:35:58,077 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. [2023-08-30 02:35:58,090 INFO L137 encePairwiseOnDemand]: 188/206 looper letters, 31 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2023-08-30 02:35:58,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 138 flow [2023-08-30 02:35:58,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:35:58,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:35:58,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 189 transitions. [2023-08-30 02:35:58,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4587378640776699 [2023-08-30 02:35:58,137 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 189 transitions. [2023-08-30 02:35:58,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 189 transitions. [2023-08-30 02:35:58,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:35:58,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 189 transitions. [2023-08-30 02:35:58,145 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) [2023-08-30 02:35:58,178 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) [2023-08-30 02:35:58,178 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) [2023-08-30 02:35:58,180 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 112 flow. Second operand 2 states and 189 transitions. [2023-08-30 02:35:58,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 138 flow [2023-08-30 02:35:58,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 137 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:35:58,183 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 75 flow [2023-08-30 02:35:58,186 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} [2023-08-30 02:35:58,189 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -18 predicate places. [2023-08-30 02:35:58,189 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 75 flow [2023-08-30 02:35:58,189 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) [2023-08-30 02:35:58,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:35:58,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:35:58,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 02:35:58,197 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-08-30 02:35:58,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:35:58,198 INFO L85 PathProgramCache]: Analyzing trace with hash 19606480, now seen corresponding path program 1 times [2023-08-30 02:35:58,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:35:58,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215675682] [2023-08-30 02:35:58,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:35:58,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:35:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:35:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:35:58,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:35:58,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215675682] [2023-08-30 02:35:58,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215675682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:35:58,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:35:58,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:35:58,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835293469] [2023-08-30 02:35:58,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:35:58,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:35:58,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:35:58,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:35:58,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:35:58,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 206 [2023-08-30 02:35:58,364 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) [2023-08-30 02:35:58,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:35:58,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 206 [2023-08-30 02:35:58,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:35:58,563 INFO L130 PetriNetUnfolder]: 1107/1727 cut-off events. [2023-08-30 02:35:58,564 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 02:35:58,566 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. [2023-08-30 02:35:58,575 INFO L137 encePairwiseOnDemand]: 204/206 looper letters, 29 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-08-30 02:35:58,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 133 flow [2023-08-30 02:35:58,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:35:58,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:35:58,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2023-08-30 02:35:58,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3511326860841424 [2023-08-30 02:35:58,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2023-08-30 02:35:58,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2023-08-30 02:35:58,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:35:58,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2023-08-30 02:35:58,579 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) [2023-08-30 02:35:58,581 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) [2023-08-30 02:35:58,582 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) [2023-08-30 02:35:58,582 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 75 flow. Second operand 3 states and 217 transitions. [2023-08-30 02:35:58,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 133 flow [2023-08-30 02:35:58,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 133 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:35:58,584 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 75 flow [2023-08-30 02:35:58,584 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} [2023-08-30 02:35:58,585 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -17 predicate places. [2023-08-30 02:35:58,585 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 75 flow [2023-08-30 02:35:58,585 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) [2023-08-30 02:35:58,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:35:58,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:35:58,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 02:35:58,586 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-08-30 02:35:58,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:35:58,587 INFO L85 PathProgramCache]: Analyzing trace with hash 19606481, now seen corresponding path program 1 times [2023-08-30 02:35:58,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:35:58,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213610274] [2023-08-30 02:35:58,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:35:58,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:35:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:35:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:35:58,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:35:58,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213610274] [2023-08-30 02:35:58,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213610274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:35:58,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:35:58,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:35:58,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079273334] [2023-08-30 02:35:58,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:35:58,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:35:58,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:35:58,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:35:58,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:35:58,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 206 [2023-08-30 02:35:58,657 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) [2023-08-30 02:35:58,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:35:58,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 206 [2023-08-30 02:35:58,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:35:58,791 INFO L130 PetriNetUnfolder]: 796/1263 cut-off events. [2023-08-30 02:35:58,791 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 02:35:58,793 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. [2023-08-30 02:35:58,799 INFO L137 encePairwiseOnDemand]: 204/206 looper letters, 28 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-08-30 02:35:58,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 131 flow [2023-08-30 02:35:58,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:35:58,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:35:58,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2023-08-30 02:35:58,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35436893203883496 [2023-08-30 02:35:58,801 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2023-08-30 02:35:58,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2023-08-30 02:35:58,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:35:58,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2023-08-30 02:35:58,803 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) [2023-08-30 02:35:58,804 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) [2023-08-30 02:35:58,805 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) [2023-08-30 02:35:58,805 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 75 flow. Second operand 3 states and 219 transitions. [2023-08-30 02:35:58,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 131 flow [2023-08-30 02:35:58,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:35:58,806 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 74 flow [2023-08-30 02:35:58,806 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} [2023-08-30 02:35:58,807 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -17 predicate places. [2023-08-30 02:35:58,807 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 74 flow [2023-08-30 02:35:58,808 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) [2023-08-30 02:35:58,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:35:58,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:35:58,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 02:35:58,808 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-08-30 02:35:58,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:35:58,809 INFO L85 PathProgramCache]: Analyzing trace with hash 19604718, now seen corresponding path program 1 times [2023-08-30 02:35:58,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:35:58,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101477558] [2023-08-30 02:35:58,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:35:58,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:35:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:35:58,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:35:58,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:35:58,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101477558] [2023-08-30 02:35:58,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101477558] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:35:58,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:35:58,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:35:58,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064786541] [2023-08-30 02:35:58,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:35:58,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:35:58,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:35:58,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:35:58,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:35:58,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 206 [2023-08-30 02:35:58,964 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) [2023-08-30 02:35:58,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:35:58,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 206 [2023-08-30 02:35:58,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:35:59,045 INFO L130 PetriNetUnfolder]: 441/721 cut-off events. [2023-08-30 02:35:59,046 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 02:35:59,047 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. [2023-08-30 02:35:59,050 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 22 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-30 02:35:59,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 108 flow [2023-08-30 02:35:59,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:35:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:35:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-08-30 02:35:59,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3818770226537217 [2023-08-30 02:35:59,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-08-30 02:35:59,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-08-30 02:35:59,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:35:59,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-08-30 02:35:59,055 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) [2023-08-30 02:35:59,057 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) [2023-08-30 02:35:59,057 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) [2023-08-30 02:35:59,057 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 74 flow. Second operand 3 states and 236 transitions. [2023-08-30 02:35:59,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 108 flow [2023-08-30 02:35:59,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:35:59,059 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 63 flow [2023-08-30 02:35:59,059 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} [2023-08-30 02:35:59,060 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -22 predicate places. [2023-08-30 02:35:59,060 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 63 flow [2023-08-30 02:35:59,060 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) [2023-08-30 02:35:59,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:35:59,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:35:59,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 02:35:59,061 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-08-30 02:35:59,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:35:59,061 INFO L85 PathProgramCache]: Analyzing trace with hash 19604719, now seen corresponding path program 1 times [2023-08-30 02:35:59,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:35:59,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984244096] [2023-08-30 02:35:59,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:35:59,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:35:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:35:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:35:59,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:35:59,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984244096] [2023-08-30 02:35:59,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984244096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:35:59,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:35:59,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:35:59,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139427905] [2023-08-30 02:35:59,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:35:59,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:35:59,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:35:59,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:35:59,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:35:59,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 206 [2023-08-30 02:35:59,155 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) [2023-08-30 02:35:59,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:35:59,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 206 [2023-08-30 02:35:59,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:35:59,217 INFO L130 PetriNetUnfolder]: 215/370 cut-off events. [2023-08-30 02:35:59,218 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 02:35:59,218 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. [2023-08-30 02:35:59,220 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 17 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2023-08-30 02:35:59,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 89 flow [2023-08-30 02:35:59,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:35:59,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:35:59,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-08-30 02:35:59,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37702265372168287 [2023-08-30 02:35:59,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-08-30 02:35:59,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-08-30 02:35:59,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:35:59,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-08-30 02:35:59,223 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) [2023-08-30 02:35:59,224 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) [2023-08-30 02:35:59,224 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) [2023-08-30 02:35:59,225 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 63 flow. Second operand 3 states and 233 transitions. [2023-08-30 02:35:59,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 89 flow [2023-08-30 02:35:59,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:35:59,226 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 54 flow [2023-08-30 02:35:59,226 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} [2023-08-30 02:35:59,227 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -26 predicate places. [2023-08-30 02:35:59,227 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 54 flow [2023-08-30 02:35:59,227 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) [2023-08-30 02:35:59,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:35:59,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 02:35:59,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 02:35:59,228 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-08-30 02:35:59,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:35:59,228 INFO L85 PathProgramCache]: Analyzing trace with hash 607746914, now seen corresponding path program 1 times [2023-08-30 02:35:59,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:35:59,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040079991] [2023-08-30 02:35:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:35:59,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:35:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:35:59,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:35:59,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:35:59,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040079991] [2023-08-30 02:35:59,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040079991] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:35:59,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:35:59,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:35:59,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782686435] [2023-08-30 02:35:59,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:35:59,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:35:59,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:35:59,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:35:59,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:35:59,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 206 [2023-08-30 02:35:59,270 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) [2023-08-30 02:35:59,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:35:59,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 206 [2023-08-30 02:35:59,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:35:59,326 INFO L130 PetriNetUnfolder]: 232/389 cut-off events. [2023-08-30 02:35:59,326 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:35:59,327 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. [2023-08-30 02:35:59,329 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 22 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-08-30 02:35:59,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 112 flow [2023-08-30 02:35:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:35:59,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:35:59,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2023-08-30 02:35:59,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3511326860841424 [2023-08-30 02:35:59,331 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2023-08-30 02:35:59,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2023-08-30 02:35:59,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:35:59,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2023-08-30 02:35:59,332 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) [2023-08-30 02:35:59,333 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) [2023-08-30 02:35:59,333 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) [2023-08-30 02:35:59,334 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 54 flow. Second operand 3 states and 217 transitions. [2023-08-30 02:35:59,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 112 flow [2023-08-30 02:35:59,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 111 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:35:59,335 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 61 flow [2023-08-30 02:35:59,335 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=61, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2023-08-30 02:35:59,336 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -24 predicate places. [2023-08-30 02:35:59,336 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 61 flow [2023-08-30 02:35:59,336 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) [2023-08-30 02:35:59,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:35:59,337 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 02:35:59,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 02:35:59,337 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-08-30 02:35:59,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:35:59,337 INFO L85 PathProgramCache]: Analyzing trace with hash -571263522, now seen corresponding path program 1 times [2023-08-30 02:35:59,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:35:59,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651952390] [2023-08-30 02:35:59,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:35:59,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:35:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:35:59,348 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:35:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:35:59,370 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:35:59,370 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:35:59,371 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (56 of 57 remaining) [2023-08-30 02:35:59,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 57 remaining) [2023-08-30 02:35:59,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 57 remaining) [2023-08-30 02:35:59,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 57 remaining) [2023-08-30 02:35:59,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 57 remaining) [2023-08-30 02:35:59,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 57 remaining) [2023-08-30 02:35:59,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 57 remaining) [2023-08-30 02:35:59,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 57 remaining) [2023-08-30 02:35:59,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 57 remaining) [2023-08-30 02:35:59,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 57 remaining) [2023-08-30 02:35:59,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 57 remaining) [2023-08-30 02:35:59,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 57 remaining) [2023-08-30 02:35:59,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 57 remaining) [2023-08-30 02:35:59,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 57 remaining) [2023-08-30 02:35:59,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 57 remaining) [2023-08-30 02:35:59,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 57 remaining) [2023-08-30 02:35:59,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 57 remaining) [2023-08-30 02:35:59,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 57 remaining) [2023-08-30 02:35:59,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 57 remaining) [2023-08-30 02:35:59,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 57 remaining) [2023-08-30 02:35:59,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 57 remaining) [2023-08-30 02:35:59,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (35 of 57 remaining) [2023-08-30 02:35:59,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 57 remaining) [2023-08-30 02:35:59,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 57 remaining) [2023-08-30 02:35:59,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 57 remaining) [2023-08-30 02:35:59,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 57 remaining) [2023-08-30 02:35:59,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 57 remaining) [2023-08-30 02:35:59,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 57 remaining) [2023-08-30 02:35:59,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 57 remaining) [2023-08-30 02:35:59,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 57 remaining) [2023-08-30 02:35:59,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (26 of 57 remaining) [2023-08-30 02:35:59,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 57 remaining) [2023-08-30 02:35:59,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 57 remaining) [2023-08-30 02:35:59,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 57 remaining) [2023-08-30 02:35:59,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 57 remaining) [2023-08-30 02:35:59,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 57 remaining) [2023-08-30 02:35:59,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 57 remaining) [2023-08-30 02:35:59,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 57 remaining) [2023-08-30 02:35:59,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 57 remaining) [2023-08-30 02:35:59,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 57 remaining) [2023-08-30 02:35:59,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 57 remaining) [2023-08-30 02:35:59,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 57 remaining) [2023-08-30 02:35:59,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 57 remaining) [2023-08-30 02:35:59,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 57 remaining) [2023-08-30 02:35:59,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 57 remaining) [2023-08-30 02:35:59,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 57 remaining) [2023-08-30 02:35:59,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 57 remaining) [2023-08-30 02:35:59,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 57 remaining) [2023-08-30 02:35:59,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 57 remaining) [2023-08-30 02:35:59,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 57 remaining) [2023-08-30 02:35:59,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 57 remaining) [2023-08-30 02:35:59,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 57 remaining) [2023-08-30 02:35:59,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (4 of 57 remaining) [2023-08-30 02:35:59,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 57 remaining) [2023-08-30 02:35:59,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 57 remaining) [2023-08-30 02:35:59,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 57 remaining) [2023-08-30 02:35:59,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 57 remaining) [2023-08-30 02:35:59,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 02:35:59,383 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:35:59,385 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:35:59,385 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 02:35:59,444 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:35:59,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 174 transitions, 372 flow [2023-08-30 02:35:59,466 INFO L130 PetriNetUnfolder]: 8/183 cut-off events. [2023-08-30 02:35:59,466 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:35:59,467 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. [2023-08-30 02:35:59,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 174 transitions, 372 flow [2023-08-30 02:35:59,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 151 transitions, 317 flow [2023-08-30 02:35:59,470 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:35:59,470 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 151 transitions, 317 flow [2023-08-30 02:35:59,470 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 151 transitions, 317 flow [2023-08-30 02:35:59,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 151 transitions, 317 flow [2023-08-30 02:35:59,487 INFO L130 PetriNetUnfolder]: 8/183 cut-off events. [2023-08-30 02:35:59,487 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:35:59,489 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. [2023-08-30 02:35:59,494 INFO L119 LiptonReduction]: Number of co-enabled transitions 11416 [2023-08-30 02:36:02,711 INFO L134 LiptonReduction]: Checked pairs total: 42711 [2023-08-30 02:36:02,712 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-30 02:36:02,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:36:02,714 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;@27ccea74, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:36:02,714 INFO L358 AbstractCegarLoop]: Starting to check reachability of 82 error locations. [2023-08-30 02:36:02,715 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 02:36:02,715 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:36:02,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:02,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 02:36:02,715 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2023-08-30 02:36:02,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:02,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1015, now seen corresponding path program 1 times [2023-08-30 02:36:02,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:02,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509290748] [2023-08-30 02:36:02,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:02,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:02,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:02,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509290748] [2023-08-30 02:36:02,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509290748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:02,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:02,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 02:36:02,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207010061] [2023-08-30 02:36:02,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:02,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:36:02,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:02,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:36:02,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:36:02,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 309 [2023-08-30 02:36:02,723 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) [2023-08-30 02:36:02,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:02,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 309 [2023-08-30 02:36:02,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:06,266 INFO L130 PetriNetUnfolder]: 27013/39057 cut-off events. [2023-08-30 02:36:06,266 INFO L131 PetriNetUnfolder]: For 483/483 co-relation queries the response was YES. [2023-08-30 02:36:06,336 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 1841. Compared 282308 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. [2023-08-30 02:36:06,571 INFO L137 encePairwiseOnDemand]: 282/309 looper letters, 47 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2023-08-30 02:36:06,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 229 flow [2023-08-30 02:36:06,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:36:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:36:06,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 274 transitions. [2023-08-30 02:36:06,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44336569579288027 [2023-08-30 02:36:06,574 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 274 transitions. [2023-08-30 02:36:06,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 274 transitions. [2023-08-30 02:36:06,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:06,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 274 transitions. [2023-08-30 02:36:06,576 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) [2023-08-30 02:36:06,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:06,578 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:06,578 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 189 flow. Second operand 2 states and 274 transitions. [2023-08-30 02:36:06,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 229 flow [2023-08-30 02:36:06,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 60 transitions, 226 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 02:36:06,582 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 132 flow [2023-08-30 02:36:06,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, 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} [2023-08-30 02:36:06,584 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -27 predicate places. [2023-08-30 02:36:06,584 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 132 flow [2023-08-30 02:36:06,584 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) [2023-08-30 02:36:06,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:06,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:36:06,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 02:36:06,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2023-08-30 02:36:06,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:06,586 INFO L85 PathProgramCache]: Analyzing trace with hash 31143128, now seen corresponding path program 1 times [2023-08-30 02:36:06,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:06,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531486159] [2023-08-30 02:36:06,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:06,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:06,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:06,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531486159] [2023-08-30 02:36:06,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531486159] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:06,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:06,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:06,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300462418] [2023-08-30 02:36:06,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:06,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:06,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:06,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:06,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:06,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 309 [2023-08-30 02:36:06,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 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) [2023-08-30 02:36:06,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:06,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 309 [2023-08-30 02:36:06,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:08,814 INFO L130 PetriNetUnfolder]: 19722/28800 cut-off events. [2023-08-30 02:36:08,814 INFO L131 PetriNetUnfolder]: For 429/429 co-relation queries the response was YES. [2023-08-30 02:36:08,870 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 1301. Compared 202076 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. [2023-08-30 02:36:09,013 INFO L137 encePairwiseOnDemand]: 307/309 looper letters, 45 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-08-30 02:36:09,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 59 transitions, 222 flow [2023-08-30 02:36:09,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:09,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:09,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2023-08-30 02:36:09,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581445523193096 [2023-08-30 02:36:09,015 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2023-08-30 02:36:09,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2023-08-30 02:36:09,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:09,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2023-08-30 02:36:09,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:09,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 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) [2023-08-30 02:36:09,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 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) [2023-08-30 02:36:09,019 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 132 flow. Second operand 3 states and 332 transitions. [2023-08-30 02:36:09,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 59 transitions, 222 flow [2023-08-30 02:36:09,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 222 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:36:09,024 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 132 flow [2023-08-30 02:36:09,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, 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} [2023-08-30 02:36:09,027 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -26 predicate places. [2023-08-30 02:36:09,027 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 132 flow [2023-08-30 02:36:09,027 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) [2023-08-30 02:36:09,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:09,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:36:09,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 02:36:09,028 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2023-08-30 02:36:09,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:09,028 INFO L85 PathProgramCache]: Analyzing trace with hash 31143127, now seen corresponding path program 1 times [2023-08-30 02:36:09,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:09,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638293135] [2023-08-30 02:36:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:09,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:09,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:09,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638293135] [2023-08-30 02:36:09,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638293135] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:09,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:09,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:09,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348985768] [2023-08-30 02:36:09,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:09,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:09,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:09,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:09,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:09,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 309 [2023-08-30 02:36:09,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 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) [2023-08-30 02:36:09,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:09,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 309 [2023-08-30 02:36:09,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:10,505 INFO L130 PetriNetUnfolder]: 12431/18543 cut-off events. [2023-08-30 02:36:10,505 INFO L131 PetriNetUnfolder]: For 429/429 co-relation queries the response was YES. [2023-08-30 02:36:10,535 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 125031 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. [2023-08-30 02:36:10,621 INFO L137 encePairwiseOnDemand]: 307/309 looper letters, 44 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-30 02:36:10,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 220 flow [2023-08-30 02:36:10,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-08-30 02:36:10,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34735706580366776 [2023-08-30 02:36:10,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-08-30 02:36:10,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-08-30 02:36:10,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:10,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-08-30 02:36:10,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 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) [2023-08-30 02:36:10,627 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 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) [2023-08-30 02:36:10,627 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 132 flow. Second operand 3 states and 322 transitions. [2023-08-30 02:36:10,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 220 flow [2023-08-30 02:36:10,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 219 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:36:10,629 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 131 flow [2023-08-30 02:36:10,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, 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} [2023-08-30 02:36:10,629 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -26 predicate places. [2023-08-30 02:36:10,630 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 131 flow [2023-08-30 02:36:10,630 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) [2023-08-30 02:36:10,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:10,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:36:10,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 02:36:10,630 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2023-08-30 02:36:10,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:10,631 INFO L85 PathProgramCache]: Analyzing trace with hash 31140126, now seen corresponding path program 1 times [2023-08-30 02:36:10,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:10,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301063574] [2023-08-30 02:36:10,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:10,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:10,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:10,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:10,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301063574] [2023-08-30 02:36:10,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301063574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:10,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:10,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:10,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482571088] [2023-08-30 02:36:10,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:10,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:10,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:10,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:10,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:10,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 309 [2023-08-30 02:36:10,707 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) [2023-08-30 02:36:10,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:10,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 309 [2023-08-30 02:36:10,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:11,321 INFO L130 PetriNetUnfolder]: 5267/8252 cut-off events. [2023-08-30 02:36:11,321 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2023-08-30 02:36:11,336 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 53083 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. [2023-08-30 02:36:11,364 INFO L137 encePairwiseOnDemand]: 298/309 looper letters, 34 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-08-30 02:36:11,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 48 transitions, 181 flow [2023-08-30 02:36:11,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:11,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:11,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2023-08-30 02:36:11,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36893203883495146 [2023-08-30 02:36:11,367 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2023-08-30 02:36:11,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2023-08-30 02:36:11,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:11,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2023-08-30 02:36:11,368 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) [2023-08-30 02:36:11,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 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) [2023-08-30 02:36:11,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 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) [2023-08-30 02:36:11,370 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 131 flow. Second operand 3 states and 342 transitions. [2023-08-30 02:36:11,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 48 transitions, 181 flow [2023-08-30 02:36:11,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 48 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:36:11,372 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 112 flow [2023-08-30 02:36:11,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, 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} [2023-08-30 02:36:11,372 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -35 predicate places. [2023-08-30 02:36:11,372 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 112 flow [2023-08-30 02:36:11,373 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) [2023-08-30 02:36:11,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:11,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:36:11,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 02:36:11,373 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2023-08-30 02:36:11,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:11,374 INFO L85 PathProgramCache]: Analyzing trace with hash 31140127, now seen corresponding path program 1 times [2023-08-30 02:36:11,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:11,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787222549] [2023-08-30 02:36:11,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:11,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:11,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:11,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787222549] [2023-08-30 02:36:11,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787222549] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:11,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:11,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:11,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854448309] [2023-08-30 02:36:11,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:11,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:11,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:11,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:11,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:11,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 309 [2023-08-30 02:36:11,441 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) [2023-08-30 02:36:11,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:11,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 309 [2023-08-30 02:36:11,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:11,811 INFO L130 PetriNetUnfolder]: 1995/3351 cut-off events. [2023-08-30 02:36:11,811 INFO L131 PetriNetUnfolder]: For 134/134 co-relation queries the response was YES. [2023-08-30 02:36:11,817 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. [2023-08-30 02:36:11,827 INFO L137 encePairwiseOnDemand]: 300/309 looper letters, 26 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-30 02:36:11,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 40 transitions, 150 flow [2023-08-30 02:36:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:11,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:11,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2023-08-30 02:36:11,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36138079827400216 [2023-08-30 02:36:11,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2023-08-30 02:36:11,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2023-08-30 02:36:11,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:11,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2023-08-30 02:36:11,830 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) [2023-08-30 02:36:11,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 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) [2023-08-30 02:36:11,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 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) [2023-08-30 02:36:11,832 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 112 flow. Second operand 3 states and 335 transitions. [2023-08-30 02:36:11,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 40 transitions, 150 flow [2023-08-30 02:36:11,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 40 transitions, 149 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:36:11,834 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 97 flow [2023-08-30 02:36:11,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, 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} [2023-08-30 02:36:11,834 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -42 predicate places. [2023-08-30 02:36:11,834 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 97 flow [2023-08-30 02:36:11,835 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) [2023-08-30 02:36:11,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:11,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 02:36:11,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 02:36:11,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2023-08-30 02:36:11,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:11,836 INFO L85 PathProgramCache]: Analyzing trace with hash 965344917, now seen corresponding path program 1 times [2023-08-30 02:36:11,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:11,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698046999] [2023-08-30 02:36:11,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:11,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:11,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:11,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:11,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698046999] [2023-08-30 02:36:11,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698046999] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:11,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:11,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:11,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372838716] [2023-08-30 02:36:11,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:11,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:11,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:11,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:11,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:11,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 309 [2023-08-30 02:36:11,880 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) [2023-08-30 02:36:11,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:11,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 309 [2023-08-30 02:36:11,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:12,229 INFO L130 PetriNetUnfolder]: 3000/4499 cut-off events. [2023-08-30 02:36:12,230 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-08-30 02:36:12,240 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. [2023-08-30 02:36:12,254 INFO L137 encePairwiseOnDemand]: 305/309 looper letters, 39 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-08-30 02:36:12,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 208 flow [2023-08-30 02:36:12,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:12,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:12,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2023-08-30 02:36:12,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3344120819848975 [2023-08-30 02:36:12,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2023-08-30 02:36:12,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2023-08-30 02:36:12,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:12,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2023-08-30 02:36:12,258 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) [2023-08-30 02:36:12,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 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) [2023-08-30 02:36:12,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 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) [2023-08-30 02:36:12,262 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 97 flow. Second operand 3 states and 310 transitions. [2023-08-30 02:36:12,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 208 flow [2023-08-30 02:36:12,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:36:12,265 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 115 flow [2023-08-30 02:36:12,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, 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} [2023-08-30 02:36:12,266 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -40 predicate places. [2023-08-30 02:36:12,266 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 115 flow [2023-08-30 02:36:12,266 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) [2023-08-30 02:36:12,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:12,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:36:12,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 02:36:12,267 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2023-08-30 02:36:12,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:12,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2028905406, now seen corresponding path program 1 times [2023-08-30 02:36:12,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:12,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565989796] [2023-08-30 02:36:12,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:12,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:12,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:12,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565989796] [2023-08-30 02:36:12,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565989796] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:12,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:12,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:36:12,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550871055] [2023-08-30 02:36:12,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:12,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:36:12,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:12,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:36:12,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:36:12,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 309 [2023-08-30 02:36:12,389 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) [2023-08-30 02:36:12,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:12,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 309 [2023-08-30 02:36:12,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:12,946 INFO L130 PetriNetUnfolder]: 4083/6060 cut-off events. [2023-08-30 02:36:12,947 INFO L131 PetriNetUnfolder]: For 662/662 co-relation queries the response was YES. [2023-08-30 02:36:12,955 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. [2023-08-30 02:36:12,969 INFO L137 encePairwiseOnDemand]: 299/309 looper letters, 84 selfloop transitions, 17 changer transitions 0/109 dead transitions. [2023-08-30 02:36:12,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 109 transitions, 482 flow [2023-08-30 02:36:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 02:36:12,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 02:36:12,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 705 transitions. [2023-08-30 02:36:12,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3259361997226075 [2023-08-30 02:36:12,972 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 705 transitions. [2023-08-30 02:36:12,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 705 transitions. [2023-08-30 02:36:12,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:12,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 705 transitions. [2023-08-30 02:36:12,974 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) [2023-08-30 02:36:12,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:12,977 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:12,977 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 115 flow. Second operand 7 states and 705 transitions. [2023-08-30 02:36:12,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 109 transitions, 482 flow [2023-08-30 02:36:12,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 109 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:36:12,980 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 231 flow [2023-08-30 02:36:12,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, 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} [2023-08-30 02:36:12,981 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -31 predicate places. [2023-08-30 02:36:12,981 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 231 flow [2023-08-30 02:36:12,981 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) [2023-08-30 02:36:12,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:12,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:36:12,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 02:36:12,982 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2023-08-30 02:36:12,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:12,983 INFO L85 PathProgramCache]: Analyzing trace with hash -137057850, now seen corresponding path program 1 times [2023-08-30 02:36:12,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:12,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444067093] [2023-08-30 02:36:12,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:12,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:13,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:13,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444067093] [2023-08-30 02:36:13,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444067093] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:13,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:13,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 02:36:13,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183008920] [2023-08-30 02:36:13,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:13,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 02:36:13,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:13,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 02:36:13,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 02:36:13,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 309 [2023-08-30 02:36:13,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 231 flow. Second operand has 7 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:13,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:13,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 309 [2023-08-30 02:36:13,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:13,955 INFO L130 PetriNetUnfolder]: 4841/7252 cut-off events. [2023-08-30 02:36:13,956 INFO L131 PetriNetUnfolder]: For 3901/3957 co-relation queries the response was YES. [2023-08-30 02:36:13,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18113 conditions, 7252 events. 4841/7252 cut-off events. For 3901/3957 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 44860 event pairs, 639 based on Foata normal form. 108/7095 useless extension candidates. Maximal degree in co-relation 18102. Up to 3998 conditions per place. [2023-08-30 02:36:14,005 INFO L137 encePairwiseOnDemand]: 298/309 looper letters, 111 selfloop transitions, 23 changer transitions 0/142 dead transitions. [2023-08-30 02:36:14,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 142 transitions, 750 flow [2023-08-30 02:36:14,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 02:36:14,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 02:36:14,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 891 transitions. [2023-08-30 02:36:14,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32038834951456313 [2023-08-30 02:36:14,008 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 891 transitions. [2023-08-30 02:36:14,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 891 transitions. [2023-08-30 02:36:14,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:14,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 891 transitions. [2023-08-30 02:36:14,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.0) internal successors, (891), 9 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 309.0) internal successors, (3090), 10 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,015 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 309.0) internal successors, (3090), 10 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,016 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 231 flow. Second operand 9 states and 891 transitions. [2023-08-30 02:36:14,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 142 transitions, 750 flow [2023-08-30 02:36:14,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 142 transitions, 742 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 02:36:14,029 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 325 flow [2023-08-30 02:36:14,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, 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=9, PETRI_FLOW=325, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2023-08-30 02:36:14,031 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -22 predicate places. [2023-08-30 02:36:14,031 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 325 flow [2023-08-30 02:36:14,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:14,032 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 02:36:14,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 02:36:14,033 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2023-08-30 02:36:14,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:14,033 INFO L85 PathProgramCache]: Analyzing trace with hash -676912271, now seen corresponding path program 1 times [2023-08-30 02:36:14,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:14,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639834087] [2023-08-30 02:36:14,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:14,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:36:14,048 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:36:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:36:14,066 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:36:14,067 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:36:14,067 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (81 of 82 remaining) [2023-08-30 02:36:14,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 82 remaining) [2023-08-30 02:36:14,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 82 remaining) [2023-08-30 02:36:14,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 82 remaining) [2023-08-30 02:36:14,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 82 remaining) [2023-08-30 02:36:14,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 82 remaining) [2023-08-30 02:36:14,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 82 remaining) [2023-08-30 02:36:14,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 82 remaining) [2023-08-30 02:36:14,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 82 remaining) [2023-08-30 02:36:14,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 82 remaining) [2023-08-30 02:36:14,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 82 remaining) [2023-08-30 02:36:14,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 82 remaining) [2023-08-30 02:36:14,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 82 remaining) [2023-08-30 02:36:14,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 82 remaining) [2023-08-30 02:36:14,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 82 remaining) [2023-08-30 02:36:14,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 82 remaining) [2023-08-30 02:36:14,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 82 remaining) [2023-08-30 02:36:14,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 82 remaining) [2023-08-30 02:36:14,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 82 remaining) [2023-08-30 02:36:14,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 82 remaining) [2023-08-30 02:36:14,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 82 remaining) [2023-08-30 02:36:14,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (60 of 82 remaining) [2023-08-30 02:36:14,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 82 remaining) [2023-08-30 02:36:14,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 82 remaining) [2023-08-30 02:36:14,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 82 remaining) [2023-08-30 02:36:14,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 82 remaining) [2023-08-30 02:36:14,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 82 remaining) [2023-08-30 02:36:14,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 82 remaining) [2023-08-30 02:36:14,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 82 remaining) [2023-08-30 02:36:14,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 82 remaining) [2023-08-30 02:36:14,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (51 of 82 remaining) [2023-08-30 02:36:14,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (50 of 82 remaining) [2023-08-30 02:36:14,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 82 remaining) [2023-08-30 02:36:14,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 82 remaining) [2023-08-30 02:36:14,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 82 remaining) [2023-08-30 02:36:14,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 82 remaining) [2023-08-30 02:36:14,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 82 remaining) [2023-08-30 02:36:14,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 82 remaining) [2023-08-30 02:36:14,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 82 remaining) [2023-08-30 02:36:14,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 82 remaining) [2023-08-30 02:36:14,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 82 remaining) [2023-08-30 02:36:14,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 82 remaining) [2023-08-30 02:36:14,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 82 remaining) [2023-08-30 02:36:14,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 82 remaining) [2023-08-30 02:36:14,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 82 remaining) [2023-08-30 02:36:14,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 82 remaining) [2023-08-30 02:36:14,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 82 remaining) [2023-08-30 02:36:14,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 82 remaining) [2023-08-30 02:36:14,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 82 remaining) [2023-08-30 02:36:14,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 82 remaining) [2023-08-30 02:36:14,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 82 remaining) [2023-08-30 02:36:14,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 82 remaining) [2023-08-30 02:36:14,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 82 remaining) [2023-08-30 02:36:14,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 82 remaining) [2023-08-30 02:36:14,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 82 remaining) [2023-08-30 02:36:14,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 82 remaining) [2023-08-30 02:36:14,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 82 remaining) [2023-08-30 02:36:14,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 82 remaining) [2023-08-30 02:36:14,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 82 remaining) [2023-08-30 02:36:14,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 82 remaining) [2023-08-30 02:36:14,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 82 remaining) [2023-08-30 02:36:14,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 82 remaining) [2023-08-30 02:36:14,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 82 remaining) [2023-08-30 02:36:14,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 82 remaining) [2023-08-30 02:36:14,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 82 remaining) [2023-08-30 02:36:14,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 82 remaining) [2023-08-30 02:36:14,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 82 remaining) [2023-08-30 02:36:14,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 82 remaining) [2023-08-30 02:36:14,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (13 of 82 remaining) [2023-08-30 02:36:14,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 82 remaining) [2023-08-30 02:36:14,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 82 remaining) [2023-08-30 02:36:14,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 82 remaining) [2023-08-30 02:36:14,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 82 remaining) [2023-08-30 02:36:14,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 82 remaining) [2023-08-30 02:36:14,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 82 remaining) [2023-08-30 02:36:14,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 82 remaining) [2023-08-30 02:36:14,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 82 remaining) [2023-08-30 02:36:14,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (4 of 82 remaining) [2023-08-30 02:36:14,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 82 remaining) [2023-08-30 02:36:14,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 82 remaining) [2023-08-30 02:36:14,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 82 remaining) [2023-08-30 02:36:14,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 82 remaining) [2023-08-30 02:36:14,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 02:36:14,080 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:36:14,081 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:36:14,081 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 02:36:14,156 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:36:14,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 240 transitions, 522 flow [2023-08-30 02:36:14,197 INFO L130 PetriNetUnfolder]: 10/244 cut-off events. [2023-08-30 02:36:14,197 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 02:36:14,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 244 events. 10/244 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 865 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 258. Up to 8 conditions per place. [2023-08-30 02:36:14,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 240 transitions, 522 flow [2023-08-30 02:36:14,206 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 195 transitions, 414 flow [2023-08-30 02:36:14,206 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:36:14,206 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 195 transitions, 414 flow [2023-08-30 02:36:14,206 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 195 transitions, 414 flow [2023-08-30 02:36:14,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 195 transitions, 414 flow [2023-08-30 02:36:14,236 INFO L130 PetriNetUnfolder]: 10/244 cut-off events. [2023-08-30 02:36:14,237 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 02:36:14,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 244 events. 10/244 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 861 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 234. Up to 8 conditions per place. [2023-08-30 02:36:14,251 INFO L119 LiptonReduction]: Number of co-enabled transitions 22380 [2023-08-30 02:36:18,455 INFO L134 LiptonReduction]: Checked pairs total: 89534 [2023-08-30 02:36:18,455 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-08-30 02:36:18,457 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:36:18,458 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;@27ccea74, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:36:18,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 107 error locations. [2023-08-30 02:36:18,459 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 02:36:18,459 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:36:18,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:18,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 02:36:18,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2023-08-30 02:36:18,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:18,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1494, now seen corresponding path program 1 times [2023-08-30 02:36:18,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:18,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567124856] [2023-08-30 02:36:18,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:18,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:18,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:18,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567124856] [2023-08-30 02:36:18,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567124856] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:18,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:18,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 02:36:18,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195653802] [2023-08-30 02:36:18,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:18,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:36:18,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:18,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:36:18,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:36:18,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 412 [2023-08-30 02:36:18,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 117 transitions, 258 flow. Second operand has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:18,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:18,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 412 [2023-08-30 02:36:18,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:37:13,617 INFO L130 PetriNetUnfolder]: 578213/756407 cut-off events. [2023-08-30 02:37:13,617 INFO L131 PetriNetUnfolder]: For 15414/15414 co-relation queries the response was YES. [2023-08-30 02:37:15,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1493424 conditions, 756407 events. 578213/756407 cut-off events. For 15414/15414 co-relation queries the response was YES. Maximal size of possible extension queue 23174. Compared 5763445 event pairs, 501412 based on Foata normal form. 0/346826 useless extension candidates. Maximal degree in co-relation 1493412. Up to 725679 conditions per place. [2023-08-30 02:37:18,446 INFO L137 encePairwiseOnDemand]: 376/412 looper letters, 64 selfloop transitions, 0 changer transitions 0/81 dead transitions. [2023-08-30 02:37:18,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 81 transitions, 314 flow [2023-08-30 02:37:18,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:37:18,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:37:18,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 360 transitions. [2023-08-30 02:37:18,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368932038834951 [2023-08-30 02:37:18,449 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 360 transitions. [2023-08-30 02:37:18,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 360 transitions. [2023-08-30 02:37:18,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:37:18,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 360 transitions. [2023-08-30 02:37:18,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 180.0) internal successors, (360), 2 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:18,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 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) [2023-08-30 02:37:18,452 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 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) [2023-08-30 02:37:18,452 INFO L175 Difference]: Start difference. First operand has 123 places, 117 transitions, 258 flow. Second operand 2 states and 360 transitions. [2023-08-30 02:37:18,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 81 transitions, 314 flow [2023-08-30 02:37:18,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 81 transitions, 307 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 02:37:18,463 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 179 flow [2023-08-30 02:37:18,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=179, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2023-08-30 02:37:18,463 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -36 predicate places. [2023-08-30 02:37:18,463 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 179 flow [2023-08-30 02:37:18,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:18,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:37:18,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:37:18,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 02:37:18,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2023-08-30 02:37:18,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:37:18,465 INFO L85 PathProgramCache]: Analyzing trace with hash 45760191, now seen corresponding path program 1 times [2023-08-30 02:37:18,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:37:18,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772609386] [2023-08-30 02:37:18,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:37:18,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:37:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:37:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:37:18,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:37:18,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772609386] [2023-08-30 02:37:18,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772609386] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:37:18,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:37:18,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:37:18,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294247463] [2023-08-30 02:37:18,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:37:18,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:37:18,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:37:18,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:37:18,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:37:18,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 412 [2023-08-30 02:37:18,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:18,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:37:18,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 412 [2023-08-30 02:37:18,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:00,986 INFO L130 PetriNetUnfolder]: 425022/559275 cut-off events. [2023-08-30 02:38:00,987 INFO L131 PetriNetUnfolder]: For 6738/6738 co-relation queries the response was YES. [2023-08-30 02:38:02,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102565 conditions, 559275 events. 425022/559275 cut-off events. For 6738/6738 co-relation queries the response was YES. Maximal size of possible extension queue 16803. Compared 4184359 event pairs, 367421 based on Foata normal form. 0/269549 useless extension candidates. Maximal degree in co-relation 1102559. Up to 535623 conditions per place. [2023-08-30 02:38:04,926 INFO L137 encePairwiseOnDemand]: 410/412 looper letters, 62 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2023-08-30 02:38:04,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 80 transitions, 303 flow [2023-08-30 02:38:04,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:04,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 430 transitions. [2023-08-30 02:38:04,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3478964401294498 [2023-08-30 02:38:04,928 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 430 transitions. [2023-08-30 02:38:04,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 430 transitions. [2023-08-30 02:38:04,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:04,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 430 transitions. [2023-08-30 02:38:04,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:04,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 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) [2023-08-30 02:38:04,932 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 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) [2023-08-30 02:38:04,932 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 179 flow. Second operand 3 states and 430 transitions. [2023-08-30 02:38:04,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 80 transitions, 303 flow [2023-08-30 02:38:04,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 80 transitions, 303 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:38:04,934 INFO L231 Difference]: Finished difference. Result has 88 places, 80 transitions, 179 flow [2023-08-30 02:38:04,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=88, PETRI_TRANSITIONS=80} [2023-08-30 02:38:04,934 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -35 predicate places. [2023-08-30 02:38:04,934 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 80 transitions, 179 flow [2023-08-30 02:38:04,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:04,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:04,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:38:04,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 02:38:04,935 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2023-08-30 02:38:04,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:04,936 INFO L85 PathProgramCache]: Analyzing trace with hash 45760189, now seen corresponding path program 1 times [2023-08-30 02:38:04,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:04,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839617101] [2023-08-30 02:38:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:04,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:04,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:38:04,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:04,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839617101] [2023-08-30 02:38:04,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839617101] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:04,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:04,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:38:04,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239824067] [2023-08-30 02:38:04,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:04,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:04,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:04,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:04,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:04,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 412 [2023-08-30 02:38:04,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:04,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:04,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 412 [2023-08-30 02:38:04,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:29,511 INFO L130 PetriNetUnfolder]: 271831/362143 cut-off events. [2023-08-30 02:38:29,511 INFO L131 PetriNetUnfolder]: For 6738/6738 co-relation queries the response was YES. [2023-08-30 02:38:30,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715380 conditions, 362143 events. 271831/362143 cut-off events. For 6738/6738 co-relation queries the response was YES. Maximal size of possible extension queue 10423. Compared 2654158 event pairs, 233430 based on Foata normal form. 0/192272 useless extension candidates. Maximal degree in co-relation 715373. Up to 345568 conditions per place. [2023-08-30 02:38:32,156 INFO L137 encePairwiseOnDemand]: 410/412 looper letters, 61 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2023-08-30 02:38:32,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 79 transitions, 301 flow [2023-08-30 02:38:32,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:32,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:32,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-08-30 02:38:32,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34951456310679613 [2023-08-30 02:38:32,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-08-30 02:38:32,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-08-30 02:38:32,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:32,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-08-30 02:38:32,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:32,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 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) [2023-08-30 02:38:32,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 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) [2023-08-30 02:38:32,162 INFO L175 Difference]: Start difference. First operand has 88 places, 80 transitions, 179 flow. Second operand 3 states and 432 transitions. [2023-08-30 02:38:32,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 79 transitions, 301 flow [2023-08-30 02:38:32,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 79 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:32,166 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 178 flow [2023-08-30 02:38:32,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2023-08-30 02:38:32,167 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -35 predicate places. [2023-08-30 02:38:32,167 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 178 flow [2023-08-30 02:38:32,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:32,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:32,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:38:32,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 02:38:32,168 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2023-08-30 02:38:32,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:32,168 INFO L85 PathProgramCache]: Analyzing trace with hash 45757545, now seen corresponding path program 1 times [2023-08-30 02:38:32,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:32,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304939663] [2023-08-30 02:38:32,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:32,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:38:32,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:32,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304939663] [2023-08-30 02:38:32,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304939663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:32,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:32,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:38:32,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229584504] [2023-08-30 02:38:32,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:32,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:32,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:32,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:32,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:32,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 412 [2023-08-30 02:38:32,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 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) [2023-08-30 02:38:32,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:32,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 412 [2023-08-30 02:38:32,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:42,187 INFO L130 PetriNetUnfolder]: 110675/150178 cut-off events. [2023-08-30 02:38:42,187 INFO L131 PetriNetUnfolder]: For 3428/3428 co-relation queries the response was YES. [2023-08-30 02:38:42,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295556 conditions, 150178 events. 110675/150178 cut-off events. For 3428/3428 co-relation queries the response was YES. Maximal size of possible extension queue 4508. Compared 1050387 event pairs, 94788 based on Foata normal form. 2562/96922 useless extension candidates. Maximal degree in co-relation 295549. Up to 141440 conditions per place. [2023-08-30 02:38:43,339 INFO L137 encePairwiseOnDemand]: 400/412 looper letters, 50 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-08-30 02:38:43,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 68 transitions, 258 flow [2023-08-30 02:38:43,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:43,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:43,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-30 02:38:43,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3656957928802589 [2023-08-30 02:38:43,341 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-30 02:38:43,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-30 02:38:43,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:43,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-30 02:38:43,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:43,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 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) [2023-08-30 02:38:43,345 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 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) [2023-08-30 02:38:43,345 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 178 flow. Second operand 3 states and 452 transitions. [2023-08-30 02:38:43,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 68 transitions, 258 flow [2023-08-30 02:38:43,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 68 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:43,348 INFO L231 Difference]: Finished difference. Result has 78 places, 68 transitions, 157 flow [2023-08-30 02:38:43,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=78, PETRI_TRANSITIONS=68} [2023-08-30 02:38:43,349 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -45 predicate places. [2023-08-30 02:38:43,349 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 68 transitions, 157 flow [2023-08-30 02:38:43,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 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) [2023-08-30 02:38:43,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:43,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:38:43,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 02:38:43,350 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2023-08-30 02:38:43,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:43,351 INFO L85 PathProgramCache]: Analyzing trace with hash 45757544, now seen corresponding path program 1 times [2023-08-30 02:38:43,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:43,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080156941] [2023-08-30 02:38:43,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:43,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:38:43,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:43,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080156941] [2023-08-30 02:38:43,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080156941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:43,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:43,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:38:43,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596604988] [2023-08-30 02:38:43,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:43,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:43,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:43,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:43,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:43,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 412 [2023-08-30 02:38:43,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 68 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:43,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:43,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 412 [2023-08-30 02:38:43,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:45,920 INFO L130 PetriNetUnfolder]: 25015/35789 cut-off events. [2023-08-30 02:38:45,920 INFO L131 PetriNetUnfolder]: For 1149/1149 co-relation queries the response was YES. [2023-08-30 02:38:46,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69481 conditions, 35789 events. 25015/35789 cut-off events. For 1149/1149 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 237440 event pairs, 21126 based on Foata normal form. 0/30975 useless extension candidates. Maximal degree in co-relation 69474. Up to 32310 conditions per place. [2023-08-30 02:38:46,097 INFO L137 encePairwiseOnDemand]: 397/412 looper letters, 36 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-08-30 02:38:46,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 54 transitions, 203 flow [2023-08-30 02:38:46,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:46,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:46,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-08-30 02:38:46,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35436893203883496 [2023-08-30 02:38:46,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-08-30 02:38:46,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-08-30 02:38:46,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:46,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-08-30 02:38:46,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:46,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 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) [2023-08-30 02:38:46,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 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) [2023-08-30 02:38:46,103 INFO L175 Difference]: Start difference. First operand has 78 places, 68 transitions, 157 flow. Second operand 3 states and 438 transitions. [2023-08-30 02:38:46,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 54 transitions, 203 flow [2023-08-30 02:38:46,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 54 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:46,105 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 130 flow [2023-08-30 02:38:46,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2023-08-30 02:38:46,105 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -58 predicate places. [2023-08-30 02:38:46,105 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 130 flow [2023-08-30 02:38:46,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:46,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:46,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 02:38:46,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 02:38:46,106 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2023-08-30 02:38:46,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:46,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1418485145, now seen corresponding path program 1 times [2023-08-30 02:38:46,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:46,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102024937] [2023-08-30 02:38:46,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:46,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:38:46,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:46,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102024937] [2023-08-30 02:38:46,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102024937] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:46,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:46,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:38:46,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571134257] [2023-08-30 02:38:46,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:46,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:46,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:46,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:46,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:46,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 412 [2023-08-30 02:38:46,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:46,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:46,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 412 [2023-08-30 02:38:46,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:50,170 INFO L130 PetriNetUnfolder]: 42422/57705 cut-off events. [2023-08-30 02:38:50,170 INFO L131 PetriNetUnfolder]: For 1828/1828 co-relation queries the response was YES. [2023-08-30 02:38:50,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114422 conditions, 57705 events. 42422/57705 cut-off events. For 1828/1828 co-relation queries the response was YES. Maximal size of possible extension queue 1821. Compared 366161 event pairs, 14953 based on Foata normal form. 0/51464 useless extension candidates. Maximal degree in co-relation 114415. Up to 53723 conditions per place. [2023-08-30 02:38:50,494 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 53 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-08-30 02:38:50,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 284 flow [2023-08-30 02:38:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-08-30 02:38:50,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32362459546925565 [2023-08-30 02:38:50,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-08-30 02:38:50,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-08-30 02:38:50,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:50,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-08-30 02:38:50,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:50,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 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) [2023-08-30 02:38:50,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 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) [2023-08-30 02:38:50,499 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 130 flow. Second operand 3 states and 400 transitions. [2023-08-30 02:38:50,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 284 flow [2023-08-30 02:38:50,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:50,503 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 155 flow [2023-08-30 02:38:50,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2023-08-30 02:38:50,504 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -56 predicate places. [2023-08-30 02:38:50,504 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 155 flow [2023-08-30 02:38:50,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:50,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:50,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:50,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 02:38:50,505 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2023-08-30 02:38:50,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:50,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1265097717, now seen corresponding path program 1 times [2023-08-30 02:38:50,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:50,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129239308] [2023-08-30 02:38:50,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:50,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:38:50,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:50,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129239308] [2023-08-30 02:38:50,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129239308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:50,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:50,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:38:50,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500814580] [2023-08-30 02:38:50,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:50,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:38:50,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:50,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:38:50,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:38:50,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 412 [2023-08-30 02:38:50,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:50,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:50,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 412 [2023-08-30 02:38:50,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:56,098 INFO L130 PetriNetUnfolder]: 61844/83615 cut-off events. [2023-08-30 02:38:56,099 INFO L131 PetriNetUnfolder]: For 10101/10101 co-relation queries the response was YES. [2023-08-30 02:38:56,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175247 conditions, 83615 events. 61844/83615 cut-off events. For 10101/10101 co-relation queries the response was YES. Maximal size of possible extension queue 2762. Compared 551840 event pairs, 16883 based on Foata normal form. 488/79298 useless extension candidates. Maximal degree in co-relation 175239. Up to 61245 conditions per place. [2023-08-30 02:38:56,630 INFO L137 encePairwiseOnDemand]: 398/412 looper letters, 129 selfloop transitions, 27 changer transitions 0/167 dead transitions. [2023-08-30 02:38:56,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 167 transitions, 754 flow [2023-08-30 02:38:56,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 02:38:56,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 02:38:56,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 935 transitions. [2023-08-30 02:38:56,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32420249653259364 [2023-08-30 02:38:56,633 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 935 transitions. [2023-08-30 02:38:56,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 935 transitions. [2023-08-30 02:38:56,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:56,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 935 transitions. [2023-08-30 02:38:56,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.57142857142858) internal successors, (935), 7 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:56,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:56,639 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:56,639 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 155 flow. Second operand 7 states and 935 transitions. [2023-08-30 02:38:56,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 167 transitions, 754 flow [2023-08-30 02:38:56,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 167 transitions, 748 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:56,647 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 346 flow [2023-08-30 02:38:56,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=346, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2023-08-30 02:38:56,648 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -47 predicate places. [2023-08-30 02:38:56,648 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 346 flow [2023-08-30 02:38:56,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:56,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:56,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:56,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 02:38:56,649 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2023-08-30 02:38:56,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:56,649 INFO L85 PathProgramCache]: Analyzing trace with hash -283120680, now seen corresponding path program 1 times [2023-08-30 02:38:56,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:56,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824151756] [2023-08-30 02:38:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:56,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:38:56,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:56,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824151756] [2023-08-30 02:38:56,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824151756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:56,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:56,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 02:38:56,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297972654] [2023-08-30 02:38:56,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:56,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 02:38:56,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:56,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 02:38:56,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 02:38:56,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 412 [2023-08-30 02:38:56,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 110.71428571428571) internal successors, (775), 7 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:56,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:56,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 412 [2023-08-30 02:38:56,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:39:05,138 INFO L130 PetriNetUnfolder]: 80642/109703 cut-off events. [2023-08-30 02:39:05,138 INFO L131 PetriNetUnfolder]: For 69647/71741 co-relation queries the response was YES. [2023-08-30 02:39:05,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284166 conditions, 109703 events. 80642/109703 cut-off events. For 69647/71741 co-relation queries the response was YES. Maximal size of possible extension queue 3768. Compared 761946 event pairs, 15825 based on Foata normal form. 1276/105340 useless extension candidates. Maximal degree in co-relation 284154. Up to 62245 conditions per place. [2023-08-30 02:39:06,010 INFO L137 encePairwiseOnDemand]: 396/412 looper letters, 195 selfloop transitions, 47 changer transitions 0/253 dead transitions. [2023-08-30 02:39:06,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 253 transitions, 1404 flow [2023-08-30 02:39:06,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 02:39:06,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 02:39:06,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1334 transitions. [2023-08-30 02:39:06,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3237864077669903 [2023-08-30 02:39:06,014 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1334 transitions. [2023-08-30 02:39:06,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1334 transitions. [2023-08-30 02:39:06,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:39:06,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1334 transitions. [2023-08-30 02:39:06,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 133.4) internal successors, (1334), 10 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:06,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 412.0) internal successors, (4532), 11 states have internal predecessors, (4532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:06,022 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 412.0) internal successors, (4532), 11 states have internal predecessors, (4532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:06,022 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 346 flow. Second operand 10 states and 1334 transitions. [2023-08-30 02:39:06,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 253 transitions, 1404 flow [2023-08-30 02:39:06,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 253 transitions, 1390 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 02:39:06,171 INFO L231 Difference]: Finished difference. Result has 87 places, 100 transitions, 621 flow [2023-08-30 02:39:06,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=621, PETRI_PLACES=87, PETRI_TRANSITIONS=100} [2023-08-30 02:39:06,172 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -36 predicate places. [2023-08-30 02:39:06,172 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 100 transitions, 621 flow [2023-08-30 02:39:06,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.71428571428571) internal successors, (775), 7 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:06,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:39:06,172 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:39:06,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 02:39:06,173 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2023-08-30 02:39:06,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:39:06,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1764955793, now seen corresponding path program 1 times [2023-08-30 02:39:06,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:39:06,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424790128] [2023-08-30 02:39:06,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:39:06,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:39:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:39:06,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 02:39:06,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:39:06,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424790128] [2023-08-30 02:39:06,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424790128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:39:06,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:39:06,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:39:06,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932336590] [2023-08-30 02:39:06,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:39:06,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:39:06,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:39:06,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:39:06,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:39:06,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 412 [2023-08-30 02:39:06,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 100 transitions, 621 flow. Second operand has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:06,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:39:06,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 412 [2023-08-30 02:39:06,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:39:18,184 INFO L130 PetriNetUnfolder]: 102918/140065 cut-off events. [2023-08-30 02:39:18,184 INFO L131 PetriNetUnfolder]: For 232387/238271 co-relation queries the response was YES. [2023-08-30 02:39:18,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434920 conditions, 140065 events. 102918/140065 cut-off events. For 232387/238271 co-relation queries the response was YES. Maximal size of possible extension queue 5080. Compared 1003932 event pairs, 23283 based on Foata normal form. 612/134394 useless extension candidates. Maximal degree in co-relation 434904. Up to 108507 conditions per place. [2023-08-30 02:39:19,506 INFO L137 encePairwiseOnDemand]: 398/412 looper letters, 191 selfloop transitions, 38 changer transitions 0/241 dead transitions. [2023-08-30 02:39:19,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 241 transitions, 1809 flow [2023-08-30 02:39:19,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 02:39:19,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 02:39:19,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 929 transitions. [2023-08-30 02:39:19,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.322122052704577 [2023-08-30 02:39:19,509 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 929 transitions. [2023-08-30 02:39:19,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 929 transitions. [2023-08-30 02:39:19,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:39:19,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 929 transitions. [2023-08-30 02:39:19,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 132.71428571428572) internal successors, (929), 7 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:19,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:19,514 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:19,514 INFO L175 Difference]: Start difference. First operand has 87 places, 100 transitions, 621 flow. Second operand 7 states and 929 transitions. [2023-08-30 02:39:19,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 241 transitions, 1809 flow [2023-08-30 02:39:20,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 241 transitions, 1616 flow, removed 60 selfloop flow, removed 5 redundant places. [2023-08-30 02:39:20,534 INFO L231 Difference]: Finished difference. Result has 92 places, 132 transitions, 921 flow [2023-08-30 02:39:20,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=921, PETRI_PLACES=92, PETRI_TRANSITIONS=132} [2023-08-30 02:39:20,535 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -31 predicate places. [2023-08-30 02:39:20,535 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 132 transitions, 921 flow [2023-08-30 02:39:20,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:20,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:39:20,536 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:39:20,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 02:39:20,536 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2023-08-30 02:39:20,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:39:20,536 INFO L85 PathProgramCache]: Analyzing trace with hash 389618332, now seen corresponding path program 1 times [2023-08-30 02:39:20,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:39:20,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169683970] [2023-08-30 02:39:20,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:39:20,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:39:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:39:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 02:39:20,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:39:20,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169683970] [2023-08-30 02:39:20,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169683970] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:39:20,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:39:20,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 02:39:20,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695194959] [2023-08-30 02:39:20,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:39:20,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 02:39:20,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:39:20,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 02:39:20,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 02:39:20,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 412 [2023-08-30 02:39:20,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 132 transitions, 921 flow. Second operand has 7 states, 7 states have (on average 110.85714285714286) internal successors, (776), 7 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:20,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:39:20,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 412 [2023-08-30 02:39:20,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:39:36,420 INFO L130 PetriNetUnfolder]: 122812/168173 cut-off events. [2023-08-30 02:39:36,420 INFO L131 PetriNetUnfolder]: For 478490/486964 co-relation queries the response was YES. [2023-08-30 02:39:37,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582792 conditions, 168173 events. 122812/168173 cut-off events. For 478490/486964 co-relation queries the response was YES. Maximal size of possible extension queue 6260. Compared 1248863 event pairs, 22195 based on Foata normal form. 1858/163364 useless extension candidates. Maximal degree in co-relation 582771. Up to 109521 conditions per place. [2023-08-30 02:39:38,469 INFO L137 encePairwiseOnDemand]: 397/412 looper letters, 262 selfloop transitions, 54 changer transitions 0/328 dead transitions. [2023-08-30 02:39:38,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 328 transitions, 2550 flow [2023-08-30 02:39:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 02:39:38,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 02:39:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1187 transitions. [2023-08-30 02:39:38,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3201186623516721 [2023-08-30 02:39:38,472 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1187 transitions. [2023-08-30 02:39:38,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1187 transitions. [2023-08-30 02:39:38,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:39:38,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1187 transitions. [2023-08-30 02:39:38,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 131.88888888888889) internal successors, (1187), 9 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:38,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 412.0) internal successors, (4120), 10 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:38,476 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 412.0) internal successors, (4120), 10 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:38,476 INFO L175 Difference]: Start difference. First operand has 92 places, 132 transitions, 921 flow. Second operand 9 states and 1187 transitions. [2023-08-30 02:39:38,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 328 transitions, 2550 flow [2023-08-30 02:39:41,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 328 transitions, 2454 flow, removed 48 selfloop flow, removed 0 redundant places. [2023-08-30 02:39:41,361 INFO L231 Difference]: Finished difference. Result has 102 places, 148 transitions, 1161 flow [2023-08-30 02:39:41,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1161, PETRI_PLACES=102, PETRI_TRANSITIONS=148} [2023-08-30 02:39:41,361 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -21 predicate places. [2023-08-30 02:39:41,361 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 148 transitions, 1161 flow [2023-08-30 02:39:41,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.85714285714286) internal successors, (776), 7 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:41,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:39:41,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:39:41,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 02:39:41,362 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2023-08-30 02:39:41,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:39:41,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1152721377, now seen corresponding path program 1 times [2023-08-30 02:39:41,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:39:41,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800089139] [2023-08-30 02:39:41,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:39:41,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:39:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:39:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:39:41,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:39:41,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800089139] [2023-08-30 02:39:41,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800089139] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:39:41,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:39:41,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 02:39:41,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715642522] [2023-08-30 02:39:41,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:39:41,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 02:39:41,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:39:41,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 02:39:41,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 02:39:41,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 412 [2023-08-30 02:39:41,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 148 transitions, 1161 flow. Second operand has 9 states, 9 states have (on average 105.77777777777777) internal successors, (952), 9 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:41,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:39:41,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 412 [2023-08-30 02:39:41,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:40:10,280 INFO L130 PetriNetUnfolder]: 210138/281001 cut-off events. [2023-08-30 02:40:10,281 INFO L131 PetriNetUnfolder]: For 1293054/1301532 co-relation queries the response was YES. [2023-08-30 02:40:12,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039110 conditions, 281001 events. 210138/281001 cut-off events. For 1293054/1301532 co-relation queries the response was YES. Maximal size of possible extension queue 9873. Compared 2081477 event pairs, 20433 based on Foata normal form. 6246/276218 useless extension candidates. Maximal degree in co-relation 1039086. Up to 119917 conditions per place. [2023-08-30 02:40:13,647 INFO L137 encePairwiseOnDemand]: 393/412 looper letters, 416 selfloop transitions, 209 changer transitions 0/636 dead transitions. [2023-08-30 02:40:13,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 636 transitions, 5803 flow [2023-08-30 02:40:13,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 02:40:13,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 02:40:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2089 transitions. [2023-08-30 02:40:13,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168992718446602 [2023-08-30 02:40:13,654 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2089 transitions. [2023-08-30 02:40:13,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2089 transitions. [2023-08-30 02:40:13,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:40:13,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2089 transitions. [2023-08-30 02:40:13,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 130.5625) internal successors, (2089), 16 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:40:13,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 412.0) internal successors, (7004), 17 states have internal predecessors, (7004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:40:13,665 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 412.0) internal successors, (7004), 17 states have internal predecessors, (7004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:40:13,665 INFO L175 Difference]: Start difference. First operand has 102 places, 148 transitions, 1161 flow. Second operand 16 states and 2089 transitions. [2023-08-30 02:40:13,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 636 transitions, 5803 flow [2023-08-30 02:40:23,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 636 transitions, 4971 flow, removed 272 selfloop flow, removed 6 redundant places. [2023-08-30 02:40:23,498 INFO L231 Difference]: Finished difference. Result has 120 places, 293 transitions, 3248 flow [2023-08-30 02:40:23,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3248, PETRI_PLACES=120, PETRI_TRANSITIONS=293} [2023-08-30 02:40:23,499 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -3 predicate places. [2023-08-30 02:40:23,499 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 293 transitions, 3248 flow [2023-08-30 02:40:23,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 105.77777777777777) internal successors, (952), 9 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:40:23,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:40:23,500 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:40:23,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 02:40:23,500 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2023-08-30 02:40:23,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:40:23,501 INFO L85 PathProgramCache]: Analyzing trace with hash -237187141, now seen corresponding path program 1 times [2023-08-30 02:40:23,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:40:23,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962165923] [2023-08-30 02:40:23,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:40:23,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:40:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:40:23,515 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:40:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:40:23,526 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:40:23,526 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:40:23,527 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (106 of 107 remaining) [2023-08-30 02:40:23,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 107 remaining) [2023-08-30 02:40:23,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 107 remaining) [2023-08-30 02:40:23,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 107 remaining) [2023-08-30 02:40:23,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 107 remaining) [2023-08-30 02:40:23,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 107 remaining) [2023-08-30 02:40:23,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 107 remaining) [2023-08-30 02:40:23,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 107 remaining) [2023-08-30 02:40:23,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 107 remaining) [2023-08-30 02:40:23,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 107 remaining) [2023-08-30 02:40:23,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 107 remaining) [2023-08-30 02:40:23,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 107 remaining) [2023-08-30 02:40:23,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 107 remaining) [2023-08-30 02:40:23,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 107 remaining) [2023-08-30 02:40:23,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 107 remaining) [2023-08-30 02:40:23,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 107 remaining) [2023-08-30 02:40:23,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 107 remaining) [2023-08-30 02:40:23,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 107 remaining) [2023-08-30 02:40:23,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 107 remaining) [2023-08-30 02:40:23,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 107 remaining) [2023-08-30 02:40:23,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 107 remaining) [2023-08-30 02:40:23,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (85 of 107 remaining) [2023-08-30 02:40:23,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 107 remaining) [2023-08-30 02:40:23,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 107 remaining) [2023-08-30 02:40:23,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 107 remaining) [2023-08-30 02:40:23,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 107 remaining) [2023-08-30 02:40:23,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 107 remaining) [2023-08-30 02:40:23,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 107 remaining) [2023-08-30 02:40:23,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 107 remaining) [2023-08-30 02:40:23,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 107 remaining) [2023-08-30 02:40:23,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (76 of 107 remaining) [2023-08-30 02:40:23,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (75 of 107 remaining) [2023-08-30 02:40:23,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 107 remaining) [2023-08-30 02:40:23,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 107 remaining) [2023-08-30 02:40:23,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 107 remaining) [2023-08-30 02:40:23,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 107 remaining) [2023-08-30 02:40:23,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 107 remaining) [2023-08-30 02:40:23,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 107 remaining) [2023-08-30 02:40:23,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 107 remaining) [2023-08-30 02:40:23,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 107 remaining) [2023-08-30 02:40:23,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 107 remaining) [2023-08-30 02:40:23,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 107 remaining) [2023-08-30 02:40:23,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 107 remaining) [2023-08-30 02:40:23,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 107 remaining) [2023-08-30 02:40:23,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 107 remaining) [2023-08-30 02:40:23,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 107 remaining) [2023-08-30 02:40:23,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 107 remaining) [2023-08-30 02:40:23,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 107 remaining) [2023-08-30 02:40:23,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 107 remaining) [2023-08-30 02:40:23,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 107 remaining) [2023-08-30 02:40:23,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 107 remaining) [2023-08-30 02:40:23,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 107 remaining) [2023-08-30 02:40:23,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 107 remaining) [2023-08-30 02:40:23,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 107 remaining) [2023-08-30 02:40:23,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 107 remaining) [2023-08-30 02:40:23,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 107 remaining) [2023-08-30 02:40:23,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 107 remaining) [2023-08-30 02:40:23,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 107 remaining) [2023-08-30 02:40:23,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 107 remaining) [2023-08-30 02:40:23,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 107 remaining) [2023-08-30 02:40:23,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 107 remaining) [2023-08-30 02:40:23,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 107 remaining) [2023-08-30 02:40:23,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 107 remaining) [2023-08-30 02:40:23,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 107 remaining) [2023-08-30 02:40:23,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 107 remaining) [2023-08-30 02:40:23,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 107 remaining) [2023-08-30 02:40:23,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 107 remaining) [2023-08-30 02:40:23,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 107 remaining) [2023-08-30 02:40:23,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 107 remaining) [2023-08-30 02:40:23,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 107 remaining) [2023-08-30 02:40:23,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 107 remaining) [2023-08-30 02:40:23,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 107 remaining) [2023-08-30 02:40:23,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 107 remaining) [2023-08-30 02:40:23,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 107 remaining) [2023-08-30 02:40:23,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 107 remaining) [2023-08-30 02:40:23,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 107 remaining) [2023-08-30 02:40:23,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 107 remaining) [2023-08-30 02:40:23,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 107 remaining) [2023-08-30 02:40:23,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 107 remaining) [2023-08-30 02:40:23,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 107 remaining) [2023-08-30 02:40:23,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 107 remaining) [2023-08-30 02:40:23,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 107 remaining) [2023-08-30 02:40:23,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 107 remaining) [2023-08-30 02:40:23,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 107 remaining) [2023-08-30 02:40:23,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (22 of 107 remaining) [2023-08-30 02:40:23,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 107 remaining) [2023-08-30 02:40:23,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 107 remaining) [2023-08-30 02:40:23,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 107 remaining) [2023-08-30 02:40:23,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 107 remaining) [2023-08-30 02:40:23,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 107 remaining) [2023-08-30 02:40:23,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 107 remaining) [2023-08-30 02:40:23,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 107 remaining) [2023-08-30 02:40:23,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 107 remaining) [2023-08-30 02:40:23,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (13 of 107 remaining) [2023-08-30 02:40:23,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 107 remaining) [2023-08-30 02:40:23,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 107 remaining) [2023-08-30 02:40:23,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 107 remaining) [2023-08-30 02:40:23,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 107 remaining) [2023-08-30 02:40:23,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 107 remaining) [2023-08-30 02:40:23,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 107 remaining) [2023-08-30 02:40:23,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 107 remaining) [2023-08-30 02:40:23,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 107 remaining) [2023-08-30 02:40:23,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (4 of 107 remaining) [2023-08-30 02:40:23,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 107 remaining) [2023-08-30 02:40:23,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 107 remaining) [2023-08-30 02:40:23,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 107 remaining) [2023-08-30 02:40:23,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 107 remaining) [2023-08-30 02:40:23,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 02:40:23,542 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:40:23,542 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:40:23,543 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 02:40:23,597 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:40:23,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 306 transitions, 676 flow [2023-08-30 02:40:23,632 INFO L130 PetriNetUnfolder]: 12/305 cut-off events. [2023-08-30 02:40:23,632 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 02:40:23,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 305 events. 12/305 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1183 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 325. Up to 10 conditions per place. [2023-08-30 02:40:23,637 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 306 transitions, 676 flow [2023-08-30 02:40:23,641 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 239 transitions, 513 flow [2023-08-30 02:40:23,641 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:40:23,641 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 239 transitions, 513 flow [2023-08-30 02:40:23,641 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 239 transitions, 513 flow [2023-08-30 02:40:23,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 239 transitions, 513 flow [2023-08-30 02:40:23,680 INFO L130 PetriNetUnfolder]: 12/305 cut-off events. [2023-08-30 02:40:23,680 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 02:40:23,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 305 events. 12/305 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1182 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 301. Up to 10 conditions per place. [2023-08-30 02:40:23,698 INFO L119 LiptonReduction]: Number of co-enabled transitions 37128 [2023-08-30 02:40:28,717 INFO L134 LiptonReduction]: Checked pairs total: 158895 [2023-08-30 02:40:28,717 INFO L136 LiptonReduction]: Total number of compositions: 232 [2023-08-30 02:40:28,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:40:28,719 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;@27ccea74, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:40:28,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 132 error locations. [2023-08-30 02:40:28,719 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 02:40:28,720 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:40:28,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:40:28,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 02:40:28,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 129 more)] === [2023-08-30 02:40:28,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:40:28,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2097, now seen corresponding path program 1 times [2023-08-30 02:40:28,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:40:28,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852905299] [2023-08-30 02:40:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:40:28,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:40:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:40:28,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:40:28,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:40:28,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852905299] [2023-08-30 02:40:28,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852905299] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:40:28,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:40:28,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 02:40:28,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127240170] [2023-08-30 02:40:28,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:40:28,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:40:28,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:40:28,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:40:28,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:40:28,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 538 [2023-08-30 02:40:28,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 147 transitions, 329 flow. Second operand has 2 states, 2 states have (on average 160.5) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:40:28,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:40:28,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 538 [2023-08-30 02:40:28,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand