./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c --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/weaver/parallel-ticket-6.wvr.c -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 c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 --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 05:58:38,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:58:38,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:58:38,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:58:38,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:58:38,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:58:38,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:58:38,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:58:38,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:58:38,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:58:38,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:58:38,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:58:38,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:58:38,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:58:38,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:58:38,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:58:38,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:58:38,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:58:38,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:58:38,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:58:38,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:58:38,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:58:38,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:58:38,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:58:38,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:58:38,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:58:38,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:58:38,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:58:38,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:58:38,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:58:38,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:58:38,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:58:38,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:58:38,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:58:38,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:58:38,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:58:38,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:58:38,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:58:38,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:58:38,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:58:38,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:58:38,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 05:58:38,902 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:58:38,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:58:38,903 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:58:38,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:58:38,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:58:38,905 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:58:38,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:58:38,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:58:38,906 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:58:38,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:58:38,907 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:58:38,907 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:58:38,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:58:38,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:58:38,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:58:38,908 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:58:38,908 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:58:38,908 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:58:38,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:58:38,908 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:58:38,908 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:58:38,909 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:58:38,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:58:38,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:58:38,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:58:38,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:58:38,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:58:38,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:58:38,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 05:58:38,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 05:58:38,910 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:58:38,910 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:58:38,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:58:38,911 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:58:38,911 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:58:39,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:58:39,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:58:39,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:58:39,307 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:58:39,307 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:58:39,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c [2023-08-30 05:58:40,612 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:58:40,816 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:58:40,817 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c [2023-08-30 05:58:40,828 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9340d285e/2b322fa5635c43279f1254cf16f443b8/FLAG4f6ccc29a [2023-08-30 05:58:40,852 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9340d285e/2b322fa5635c43279f1254cf16f443b8 [2023-08-30 05:58:40,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:58:40,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:58:40,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:58:40,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:58:40,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:58:40,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:58:40" (1/1) ... [2023-08-30 05:58:40,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@619c60bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:58:40, skipping insertion in model container [2023-08-30 05:58:40,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:58:40" (1/1) ... [2023-08-30 05:58:40,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:58:40,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:58:41,092 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c[4400,4413] [2023-08-30 05:58:41,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:58:41,113 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 05:58:41,153 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c[4400,4413] [2023-08-30 05:58:41,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:58:41,169 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:58:41,169 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:58:41,175 INFO L208 MainTranslator]: Completed translation [2023-08-30 05:58:41,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:58:41 WrapperNode [2023-08-30 05:58:41,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:58:41,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 05:58:41,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 05:58:41,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 05:58:41,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:58:41" (1/1) ... [2023-08-30 05:58:41,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:58:41" (1/1) ... [2023-08-30 05:58:41,246 INFO L138 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 288 [2023-08-30 05:58:41,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 05:58:41,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 05:58:41,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 05:58:41,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 05:58:41,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:58:41" (1/1) ... [2023-08-30 05:58:41,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:58:41" (1/1) ... [2023-08-30 05:58:41,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:58:41" (1/1) ... [2023-08-30 05:58:41,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:58:41" (1/1) ... [2023-08-30 05:58:41,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:58:41" (1/1) ... [2023-08-30 05:58:41,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:58:41" (1/1) ... [2023-08-30 05:58:41,284 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:58:41" (1/1) ... [2023-08-30 05:58:41,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:58:41" (1/1) ... [2023-08-30 05:58:41,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 05:58:41,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 05:58:41,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 05:58:41,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 05:58:41,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:58:41" (1/1) ... [2023-08-30 05:58:41,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:58:41,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:58:41,326 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 05:58:41,327 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 05:58:41,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 05:58:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 05:58:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 05:58:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 05:58:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 05:58:41,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 05:58:41,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 05:58:41,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 05:58:41,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 05:58:41,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 05:58:41,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 05:58:41,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 05:58:41,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 05:58:41,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-30 05:58:41,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-30 05:58:41,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-30 05:58:41,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-30 05:58:41,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 05:58:41,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 05:58:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 05:58:41,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 05:58:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 05:58:41,359 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 05:58:41,459 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 05:58:41,461 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 05:58:41,853 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 05:58:42,000 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 05:58:42,007 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 05:58:42,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:58:42 BoogieIcfgContainer [2023-08-30 05:58:42,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 05:58:42,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 05:58:42,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 05:58:42,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 05:58:42,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:58:40" (1/3) ... [2023-08-30 05:58:42,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741798c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:58:42, skipping insertion in model container [2023-08-30 05:58:42,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:58:41" (2/3) ... [2023-08-30 05:58:42,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741798c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:58:42, skipping insertion in model container [2023-08-30 05:58:42,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:58:42" (3/3) ... [2023-08-30 05:58:42,019 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2023-08-30 05:58:42,035 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 05:58:42,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-30 05:58:42,036 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 05:58:42,162 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-30 05:58:42,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 219 transitions, 486 flow [2023-08-30 05:58:42,307 INFO L130 PetriNetUnfolder]: 2/213 cut-off events. [2023-08-30 05:58:42,308 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 05:58:42,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 213 events. 2/213 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 161 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 157. Up to 2 conditions per place. [2023-08-30 05:58:42,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 219 transitions, 486 flow [2023-08-30 05:58:42,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 209 transitions, 454 flow [2023-08-30 05:58:42,326 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 05:58:42,338 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 209 transitions, 454 flow [2023-08-30 05:58:42,343 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 209 transitions, 454 flow [2023-08-30 05:58:42,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 209 transitions, 454 flow [2023-08-30 05:58:42,421 INFO L130 PetriNetUnfolder]: 2/209 cut-off events. [2023-08-30 05:58:42,421 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 05:58:42,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 209 events. 2/209 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 160 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 157. Up to 2 conditions per place. [2023-08-30 05:58:42,425 INFO L119 LiptonReduction]: Number of co-enabled transitions 3930 [2023-08-30 05:58:52,247 INFO L134 LiptonReduction]: Checked pairs total: 22494 [2023-08-30 05:58:52,247 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-08-30 05:58:52,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 05:58:52,265 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;@376e006, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 05:58:52,266 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-30 05:58:52,269 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 05:58:52,269 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:58:52,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:52,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 05:58:52,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 05:58:52,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:52,275 INFO L85 PathProgramCache]: Analyzing trace with hash 856, now seen corresponding path program 1 times [2023-08-30 05:58:52,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:52,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862397044] [2023-08-30 05:58:52,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:52,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:52,372 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 05:58:52,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:52,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862397044] [2023-08-30 05:58:52,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862397044] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:52,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:52,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 05:58:52,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207297265] [2023-08-30 05:58:52,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:52,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 05:58:52,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:52,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 05:58:52,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 05:58:52,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 399 [2023-08-30 05:58:52,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 75 transitions, 186 flow. Second operand has 2 states, 2 states have (on average 186.5) internal successors, (373), 2 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 05:58:52,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:52,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 399 [2023-08-30 05:58:52,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:59:02,614 INFO L130 PetriNetUnfolder]: 107865/140648 cut-off events. [2023-08-30 05:59:02,615 INFO L131 PetriNetUnfolder]: For 3091/3091 co-relation queries the response was YES. [2023-08-30 05:59:03,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279915 conditions, 140648 events. 107865/140648 cut-off events. For 3091/3091 co-relation queries the response was YES. Maximal size of possible extension queue 5167. Compared 887494 event pairs, 107865 based on Foata normal form. 0/126595 useless extension candidates. Maximal degree in co-relation 229388. Up to 135165 conditions per place. [2023-08-30 05:59:03,744 INFO L137 encePairwiseOnDemand]: 396/399 looper letters, 65 selfloop transitions, 0 changer transitions 0/72 dead transitions. [2023-08-30 05:59:03,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 72 transitions, 310 flow [2023-08-30 05:59:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 05:59:03,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 05:59:03,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 440 transitions. [2023-08-30 05:59:03,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5513784461152882 [2023-08-30 05:59:03,767 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 440 transitions. [2023-08-30 05:59:03,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 440 transitions. [2023-08-30 05:59:03,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:59:03,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 440 transitions. [2023-08-30 05:59:03,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 220.0) internal successors, (440), 2 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 05:59:03,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 399.0) internal successors, (1197), 3 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states 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 05:59:03,784 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 399.0) internal successors, (1197), 3 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states 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 05:59:03,785 INFO L175 Difference]: Start difference. First operand has 94 places, 75 transitions, 186 flow. Second operand 2 states and 440 transitions. [2023-08-30 05:59:03,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 72 transitions, 310 flow [2023-08-30 05:59:04,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 72 transitions, 286 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-30 05:59:04,304 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 156 flow [2023-08-30 05:59:04,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=156, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2023-08-30 05:59:04,309 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -14 predicate places. [2023-08-30 05:59:04,309 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 156 flow [2023-08-30 05:59:04,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 186.5) internal successors, (373), 2 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 05:59:04,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:59:04,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:59:04,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 05:59:04,311 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 05:59:04,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:59:04,311 INFO L85 PathProgramCache]: Analyzing trace with hash 843898, now seen corresponding path program 1 times [2023-08-30 05:59:04,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:59:04,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060742695] [2023-08-30 05:59:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:59:04,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:59:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:59:05,088 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 05:59:05,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:59:05,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060742695] [2023-08-30 05:59:05,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060742695] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:59:05,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:59:05,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:59:05,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363672279] [2023-08-30 05:59:05,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:59:05,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:59:05,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:59:05,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:59:05,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:59:05,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 399 [2023-08-30 05:59:05,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 05:59:05,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:59:05,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 399 [2023-08-30 05:59:05,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:59:11,971 INFO L130 PetriNetUnfolder]: 104022/135775 cut-off events. [2023-08-30 05:59:11,971 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2023-08-30 05:59:12,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267436 conditions, 135775 events. 104022/135775 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5105. Compared 856881 event pairs, 104022 based on Foata normal form. 0/122750 useless extension candidates. Maximal degree in co-relation 267433. Up to 130293 conditions per place. [2023-08-30 05:59:12,770 INFO L137 encePairwiseOnDemand]: 396/399 looper letters, 62 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-08-30 05:59:12,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 70 transitions, 278 flow [2023-08-30 05:59:12,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:59:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:59:12,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 584 transitions. [2023-08-30 05:59:12,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878863826232247 [2023-08-30 05:59:12,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 584 transitions. [2023-08-30 05:59:12,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 584 transitions. [2023-08-30 05:59:12,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:59:12,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 584 transitions. [2023-08-30 05:59:12,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 05:59:12,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 05:59:12,783 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 05:59:12,784 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 156 flow. Second operand 3 states and 584 transitions. [2023-08-30 05:59:12,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 70 transitions, 278 flow [2023-08-30 05:59:12,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 70 transitions, 278 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 05:59:12,787 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 154 flow [2023-08-30 05:59:12,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2023-08-30 05:59:12,789 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -14 predicate places. [2023-08-30 05:59:12,789 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 154 flow [2023-08-30 05:59:12,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 05:59:12,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:59:12,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:59:12,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 05:59:12,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 05:59:12,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:59:12,794 INFO L85 PathProgramCache]: Analyzing trace with hash 843897, now seen corresponding path program 1 times [2023-08-30 05:59:12,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:59:12,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384644069] [2023-08-30 05:59:12,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:59:12,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:59:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:59:13,124 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 05:59:13,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:59:13,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384644069] [2023-08-30 05:59:13,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384644069] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:59:13,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:59:13,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:59:13,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332746975] [2023-08-30 05:59:13,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:59:13,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:59:13,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:59:13,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:59:13,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:59:13,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 399 [2023-08-30 05:59:13,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 05:59:13,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:59:13,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 399 [2023-08-30 05:59:13,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:59:19,608 INFO L130 PetriNetUnfolder]: 100179/130902 cut-off events. [2023-08-30 05:59:19,609 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2023-08-30 05:59:19,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257694 conditions, 130902 events. 100179/130902 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5070. Compared 826643 event pairs, 100179 based on Foata normal form. 0/118905 useless extension candidates. Maximal degree in co-relation 257690. Up to 125422 conditions per place. [2023-08-30 05:59:20,485 INFO L137 encePairwiseOnDemand]: 396/399 looper letters, 60 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-08-30 05:59:20,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 68 transitions, 272 flow [2023-08-30 05:59:20,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:59:20,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:59:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 585 transitions. [2023-08-30 05:59:20,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48872180451127817 [2023-08-30 05:59:20,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 585 transitions. [2023-08-30 05:59:20,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 585 transitions. [2023-08-30 05:59:20,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:59:20,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 585 transitions. [2023-08-30 05:59:20,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states 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 05:59:20,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 05:59:20,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 05:59:20,493 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 154 flow. Second operand 3 states and 585 transitions. [2023-08-30 05:59:20,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 68 transitions, 272 flow [2023-08-30 05:59:20,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 68 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:59:20,495 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 151 flow [2023-08-30 05:59:20,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=77, 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=151, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2023-08-30 05:59:20,496 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -15 predicate places. [2023-08-30 05:59:20,496 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 151 flow [2023-08-30 05:59:20,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 05:59:20,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:59:20,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:59:20,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 05:59:20,497 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 05:59:20,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:59:20,498 INFO L85 PathProgramCache]: Analyzing trace with hash 811004555, now seen corresponding path program 1 times [2023-08-30 05:59:20,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:59:20,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809234587] [2023-08-30 05:59:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:59:20,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:59:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:59:20,642 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 05:59:20,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:59:20,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809234587] [2023-08-30 05:59:20,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809234587] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:59:20,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:59:20,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:59:20,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833462840] [2023-08-30 05:59:20,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:59:20,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:59:20,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:59:20,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:59:20,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:59:20,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 399 [2023-08-30 05:59:20,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 05:59:20,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:59:20,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 399 [2023-08-30 05:59:20,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:59:26,982 INFO L130 PetriNetUnfolder]: 99387/129834 cut-off events. [2023-08-30 05:59:26,982 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2023-08-30 05:59:27,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255563 conditions, 129834 events. 99387/129834 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5070. Compared 820046 event pairs, 99387 based on Foata normal form. 0/118110 useless extension candidates. Maximal degree in co-relation 255559. Up to 124358 conditions per place. [2023-08-30 05:59:27,678 INFO L137 encePairwiseOnDemand]: 396/399 looper letters, 58 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2023-08-30 05:59:27,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 66 transitions, 265 flow [2023-08-30 05:59:27,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:59:27,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:59:27,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 580 transitions. [2023-08-30 05:59:27,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48454469507101083 [2023-08-30 05:59:27,680 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 580 transitions. [2023-08-30 05:59:27,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 580 transitions. [2023-08-30 05:59:27,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:59:27,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 580 transitions. [2023-08-30 05:59:27,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states 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 05:59:27,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 05:59:27,685 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 05:59:27,685 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 151 flow. Second operand 3 states and 580 transitions. [2023-08-30 05:59:27,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 66 transitions, 265 flow [2023-08-30 05:59:27,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 66 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:59:27,688 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 148 flow [2023-08-30 05:59:27,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2023-08-30 05:59:27,689 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -16 predicate places. [2023-08-30 05:59:27,689 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 148 flow [2023-08-30 05:59:27,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 05:59:27,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:59:27,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:59:27,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 05:59:27,690 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 05:59:27,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:59:27,691 INFO L85 PathProgramCache]: Analyzing trace with hash 811004553, now seen corresponding path program 1 times [2023-08-30 05:59:27,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:59:27,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840121201] [2023-08-30 05:59:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:59:27,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:59:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:59:27,980 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 05:59:27,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:59:27,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840121201] [2023-08-30 05:59:27,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840121201] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:59:27,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:59:27,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:59:27,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617844255] [2023-08-30 05:59:27,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:59:27,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:59:27,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:59:27,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:59:27,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:59:28,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 399 [2023-08-30 05:59:28,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states 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 05:59:28,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:59:28,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 399 [2023-08-30 05:59:28,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:59:34,042 INFO L130 PetriNetUnfolder]: 98595/128766 cut-off events. [2023-08-30 05:59:34,043 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2023-08-30 05:59:34,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253432 conditions, 128766 events. 98595/128766 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5070. Compared 813193 event pairs, 98595 based on Foata normal form. 0/117315 useless extension candidates. Maximal degree in co-relation 253428. Up to 123294 conditions per place. [2023-08-30 05:59:34,975 INFO L137 encePairwiseOnDemand]: 396/399 looper letters, 56 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-08-30 05:59:34,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 258 flow [2023-08-30 05:59:34,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:59:34,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:59:34,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 581 transitions. [2023-08-30 05:59:34,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2023-08-30 05:59:34,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 581 transitions. [2023-08-30 05:59:34,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 581 transitions. [2023-08-30 05:59:34,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:59:34,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 581 transitions. [2023-08-30 05:59:34,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 05:59:34,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 05:59:34,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 05:59:34,983 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 148 flow. Second operand 3 states and 581 transitions. [2023-08-30 05:59:34,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 258 flow [2023-08-30 05:59:34,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 64 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:59:34,985 INFO L231 Difference]: Finished difference. Result has 77 places, 64 transitions, 145 flow [2023-08-30 05:59:34,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=77, PETRI_TRANSITIONS=64} [2023-08-30 05:59:34,986 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -17 predicate places. [2023-08-30 05:59:34,986 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 64 transitions, 145 flow [2023-08-30 05:59:34,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states 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 05:59:34,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:59:34,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:59:34,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 05:59:34,987 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 05:59:34,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:59:34,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1986316189, now seen corresponding path program 1 times [2023-08-30 05:59:34,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:59:34,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663680412] [2023-08-30 05:59:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:59:34,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:59:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:59:35,100 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 05:59:35,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:59:35,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663680412] [2023-08-30 05:59:35,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663680412] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:59:35,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:59:35,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:59:35,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540266303] [2023-08-30 05:59:35,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:59:35,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:59:35,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:59:35,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:59:35,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:59:35,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 399 [2023-08-30 05:59:35,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 64 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 05:59:35,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:59:35,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 399 [2023-08-30 05:59:35,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:59:41,513 INFO L130 PetriNetUnfolder]: 98307/128318 cut-off events. [2023-08-30 05:59:41,513 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2023-08-30 05:59:41,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252569 conditions, 128318 events. 98307/128318 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5070. Compared 809974 event pairs, 98307 based on Foata normal form. 0/117047 useless extension candidates. Maximal degree in co-relation 252565. Up to 122878 conditions per place. [2023-08-30 05:59:42,214 INFO L137 encePairwiseOnDemand]: 396/399 looper letters, 54 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-30 05:59:42,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 62 transitions, 251 flow [2023-08-30 05:59:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:59:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:59:42,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 576 transitions. [2023-08-30 05:59:42,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48120300751879697 [2023-08-30 05:59:42,217 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 576 transitions. [2023-08-30 05:59:42,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 576 transitions. [2023-08-30 05:59:42,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:59:42,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 576 transitions. [2023-08-30 05:59:42,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 05:59:42,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 05:59:42,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 05:59:42,223 INFO L175 Difference]: Start difference. First operand has 77 places, 64 transitions, 145 flow. Second operand 3 states and 576 transitions. [2023-08-30 05:59:42,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 62 transitions, 251 flow [2023-08-30 05:59:42,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 62 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:59:42,226 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 142 flow [2023-08-30 05:59:42,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2023-08-30 05:59:42,229 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -18 predicate places. [2023-08-30 05:59:42,229 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 142 flow [2023-08-30 05:59:42,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 05:59:42,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:59:42,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:59:42,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 05:59:42,231 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 05:59:42,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:59:42,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1986316187, now seen corresponding path program 1 times [2023-08-30 05:59:42,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:59:42,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65377057] [2023-08-30 05:59:42,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:59:42,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:59:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:59:42,360 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 05:59:42,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:59:42,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65377057] [2023-08-30 05:59:42,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65377057] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:59:42,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:59:42,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:59:42,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72003011] [2023-08-30 05:59:42,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:59:42,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:59:42,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:59:42,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:59:42,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:59:42,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 399 [2023-08-30 05:59:42,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states 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 05:59:42,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:59:42,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 399 [2023-08-30 05:59:42,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:59:48,614 INFO L130 PetriNetUnfolder]: 98019/127886 cut-off events. [2023-08-30 05:59:48,614 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2023-08-30 05:59:48,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251722 conditions, 127886 events. 98019/127886 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5070. Compared 807037 event pairs, 98019 based on Foata normal form. 0/116747 useless extension candidates. Maximal degree in co-relation 251718. Up to 122462 conditions per place. [2023-08-30 05:59:49,338 INFO L137 encePairwiseOnDemand]: 396/399 looper letters, 52 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-08-30 05:59:49,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 60 transitions, 244 flow [2023-08-30 05:59:49,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:59:49,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:59:49,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2023-08-30 05:59:49,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49958228905597324 [2023-08-30 05:59:49,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2023-08-30 05:59:49,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2023-08-30 05:59:49,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:59:49,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2023-08-30 05:59:49,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states 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 05:59:49,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 05:59:49,345 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 05:59:49,345 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 142 flow. Second operand 3 states and 598 transitions. [2023-08-30 05:59:49,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 60 transitions, 244 flow [2023-08-30 05:59:49,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 60 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:59:49,347 INFO L231 Difference]: Finished difference. Result has 75 places, 60 transitions, 139 flow [2023-08-30 05:59:49,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=75, PETRI_TRANSITIONS=60} [2023-08-30 05:59:49,348 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -19 predicate places. [2023-08-30 05:59:49,348 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 60 transitions, 139 flow [2023-08-30 05:59:49,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states 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 05:59:49,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:59:49,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:59:49,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 05:59:49,349 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 05:59:49,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:59:49,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1884397819, now seen corresponding path program 1 times [2023-08-30 05:59:49,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:59:49,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229926587] [2023-08-30 05:59:49,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:59:49,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:59:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:59:49,433 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 05:59:49,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:59:49,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229926587] [2023-08-30 05:59:49,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229926587] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:59:49,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:59:49,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:59:49,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153414770] [2023-08-30 05:59:49,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:59:49,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:59:49,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:59:49,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:59:49,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:59:49,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 399 [2023-08-30 05:59:49,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 60 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states 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 05:59:49,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:59:49,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 399 [2023-08-30 05:59:49,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:59:55,655 INFO L130 PetriNetUnfolder]: 97227/126758 cut-off events. [2023-08-30 05:59:55,656 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2023-08-30 05:59:56,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249531 conditions, 126758 events. 97227/126758 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5061. Compared 798720 event pairs, 97227 based on Foata normal form. 0/115891 useless extension candidates. Maximal degree in co-relation 249527. Up to 121398 conditions per place. [2023-08-30 05:59:56,435 INFO L137 encePairwiseOnDemand]: 396/399 looper letters, 50 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-30 05:59:56,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 58 transitions, 237 flow [2023-08-30 05:59:56,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:59:56,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:59:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2023-08-30 05:59:56,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4778613199665831 [2023-08-30 05:59:56,437 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 572 transitions. [2023-08-30 05:59:56,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 572 transitions. [2023-08-30 05:59:56,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:59:56,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 572 transitions. [2023-08-30 05:59:56,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states 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 05:59:56,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 05:59:56,444 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 05:59:56,444 INFO L175 Difference]: Start difference. First operand has 75 places, 60 transitions, 139 flow. Second operand 3 states and 572 transitions. [2023-08-30 05:59:56,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 58 transitions, 237 flow [2023-08-30 05:59:56,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 58 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:59:56,449 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 136 flow [2023-08-30 05:59:56,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=72, 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=136, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2023-08-30 05:59:56,452 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -20 predicate places. [2023-08-30 05:59:56,452 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 136 flow [2023-08-30 05:59:56,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states 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 05:59:56,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:59:56,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:59:56,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 05:59:56,453 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 05:59:56,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:59:56,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1884397820, now seen corresponding path program 1 times [2023-08-30 05:59:56,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:59:56,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172618743] [2023-08-30 05:59:56,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:59:56,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:59:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:59:56,568 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 05:59:56,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:59:56,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172618743] [2023-08-30 05:59:56,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172618743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:59:56,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:59:56,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:59:56,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607861959] [2023-08-30 05:59:56,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:59:56,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:59:56,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:59:56,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:59:56,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:59:56,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 399 [2023-08-30 05:59:56,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 05:59:56,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:59:56,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 399 [2023-08-30 05:59:56,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:00:02,926 INFO L130 PetriNetUnfolder]: 96435/125630 cut-off events. [2023-08-30 06:00:02,926 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2023-08-30 06:00:03,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247340 conditions, 125630 events. 96435/125630 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5052. Compared 790165 event pairs, 96435 based on Foata normal form. 0/115035 useless extension candidates. Maximal degree in co-relation 247336. Up to 120334 conditions per place. [2023-08-30 06:00:03,916 INFO L137 encePairwiseOnDemand]: 396/399 looper letters, 48 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 06:00:03,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 56 transitions, 230 flow [2023-08-30 06:00:03,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 06:00:03,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 06:00:03,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2023-08-30 06:00:03,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49624060150375937 [2023-08-30 06:00:03,918 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2023-08-30 06:00:03,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2023-08-30 06:00:03,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:00:03,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2023-08-30 06:00:03,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 06:00:03,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 06:00:03,921 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 06:00:03,921 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 136 flow. Second operand 3 states and 594 transitions. [2023-08-30 06:00:03,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 56 transitions, 230 flow [2023-08-30 06:00:03,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 06:00:03,923 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 133 flow [2023-08-30 06:00:03,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2023-08-30 06:00:03,924 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -21 predicate places. [2023-08-30 06:00:03,924 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 133 flow [2023-08-30 06:00:03,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 06:00:03,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:00:03,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:00:03,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 06:00:03,925 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 06:00:03,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:00:03,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1569875367, now seen corresponding path program 1 times [2023-08-30 06:00:03,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:00:03,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769891690] [2023-08-30 06:00:03,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:00:03,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:00:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:00:04,025 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 06:00:04,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:00:04,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769891690] [2023-08-30 06:00:04,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769891690] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:00:04,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:00:04,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 06:00:04,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54303907] [2023-08-30 06:00:04,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:00:04,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 06:00:04,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:00:04,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 06:00:04,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 06:00:04,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 399 [2023-08-30 06:00:04,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:00:04,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:00:04,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 399 [2023-08-30 06:00:04,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:00:11,233 INFO L130 PetriNetUnfolder]: 92592/120503 cut-off events. [2023-08-30 06:00:11,233 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2023-08-30 06:00:11,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237343 conditions, 120503 events. 92592/120503 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 4858. Compared 752443 event pairs, 92592 based on Foata normal form. 0/110936 useless extension candidates. Maximal degree in co-relation 237339. Up to 115463 conditions per place. [2023-08-30 06:00:12,166 INFO L137 encePairwiseOnDemand]: 396/399 looper letters, 46 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-08-30 06:00:12,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 54 transitions, 223 flow [2023-08-30 06:00:12,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 06:00:12,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 06:00:12,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2023-08-30 06:00:12,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47451963241436923 [2023-08-30 06:00:12,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2023-08-30 06:00:12,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2023-08-30 06:00:12,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:00:12,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2023-08-30 06:00:12,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:00:12,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 06:00:12,172 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 06:00:12,172 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 133 flow. Second operand 3 states and 568 transitions. [2023-08-30 06:00:12,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 54 transitions, 223 flow [2023-08-30 06:00:12,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 54 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 06:00:12,174 INFO L231 Difference]: Finished difference. Result has 72 places, 54 transitions, 130 flow [2023-08-30 06:00:12,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=70, 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=72, PETRI_TRANSITIONS=54} [2023-08-30 06:00:12,174 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -22 predicate places. [2023-08-30 06:00:12,175 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 54 transitions, 130 flow [2023-08-30 06:00:12,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:00:12,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:00:12,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:00:12,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 06:00:12,176 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 06:00:12,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:00:12,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1569875366, now seen corresponding path program 1 times [2023-08-30 06:00:12,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:00:12,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143667278] [2023-08-30 06:00:12,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:00:12,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:00:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:00:12,251 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 06:00:12,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:00:12,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143667278] [2023-08-30 06:00:12,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143667278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:00:12,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:00:12,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 06:00:12,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207044023] [2023-08-30 06:00:12,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:00:12,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 06:00:12,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:00:12,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 06:00:12,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 06:00:12,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 399 [2023-08-30 06:00:12,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 54 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states 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 06:00:12,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:00:12,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 399 [2023-08-30 06:00:12,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:00:18,237 INFO L130 PetriNetUnfolder]: 88749/115376 cut-off events. [2023-08-30 06:00:18,237 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2023-08-30 06:00:18,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227346 conditions, 115376 events. 88749/115376 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 4706. Compared 715427 event pairs, 88749 based on Foata normal form. 0/106837 useless extension candidates. Maximal degree in co-relation 227342. Up to 110592 conditions per place. [2023-08-30 06:00:19,146 INFO L137 encePairwiseOnDemand]: 396/399 looper letters, 44 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-08-30 06:00:19,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 52 transitions, 216 flow [2023-08-30 06:00:19,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 06:00:19,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 06:00:19,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-08-30 06:00:19,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928989139515455 [2023-08-30 06:00:19,148 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-08-30 06:00:19,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-08-30 06:00:19,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:00:19,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-08-30 06:00:19,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states 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 06:00:19,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 06:00:19,152 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 06:00:19,152 INFO L175 Difference]: Start difference. First operand has 72 places, 54 transitions, 130 flow. Second operand 3 states and 590 transitions. [2023-08-30 06:00:19,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 52 transitions, 216 flow [2023-08-30 06:00:19,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 52 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 06:00:19,154 INFO L231 Difference]: Finished difference. Result has 71 places, 52 transitions, 127 flow [2023-08-30 06:00:19,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=71, PETRI_TRANSITIONS=52} [2023-08-30 06:00:19,154 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -23 predicate places. [2023-08-30 06:00:19,154 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 52 transitions, 127 flow [2023-08-30 06:00:19,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states 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 06:00:19,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:00:19,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:00:19,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 06:00:19,155 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 06:00:19,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:00:19,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1116684260, now seen corresponding path program 1 times [2023-08-30 06:00:19,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:00:19,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715665051] [2023-08-30 06:00:19,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:00:19,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:00:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:00:19,214 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 06:00:19,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:00:19,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715665051] [2023-08-30 06:00:19,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715665051] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:00:19,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:00:19,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 06:00:19,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508402641] [2023-08-30 06:00:19,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:00:19,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 06:00:19,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:00:19,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 06:00:19,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 06:00:19,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 399 [2023-08-30 06:00:19,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 52 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states 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 06:00:19,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:00:19,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 399 [2023-08-30 06:00:19,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:00:24,356 INFO L130 PetriNetUnfolder]: 70317/91824 cut-off events. [2023-08-30 06:00:24,356 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2023-08-30 06:00:24,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181267 conditions, 91824 events. 70317/91824 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 3631. Compared 560378 event pairs, 70317 based on Foata normal form. 0/87381 useless extension candidates. Maximal degree in co-relation 181263. Up to 88064 conditions per place. [2023-08-30 06:00:24,991 INFO L137 encePairwiseOnDemand]: 397/399 looper letters, 43 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-08-30 06:00:24,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 51 transitions, 213 flow [2023-08-30 06:00:24,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 06:00:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 06:00:24,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 567 transitions. [2023-08-30 06:00:24,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-08-30 06:00:24,993 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 567 transitions. [2023-08-30 06:00:24,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 567 transitions. [2023-08-30 06:00:24,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:00:24,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 567 transitions. [2023-08-30 06:00:24,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states 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 06:00:24,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 06:00:24,997 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 06:00:24,997 INFO L175 Difference]: Start difference. First operand has 71 places, 52 transitions, 127 flow. Second operand 3 states and 567 transitions. [2023-08-30 06:00:24,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 51 transitions, 213 flow [2023-08-30 06:00:24,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 51 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 06:00:24,998 INFO L231 Difference]: Finished difference. Result has 71 places, 51 transitions, 126 flow [2023-08-30 06:00:24,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=71, PETRI_TRANSITIONS=51} [2023-08-30 06:00:24,999 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -23 predicate places. [2023-08-30 06:00:24,999 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 51 transitions, 126 flow [2023-08-30 06:00:24,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states 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 06:00:24,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:00:24,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:00:24,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 06:00:24,999 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 06:00:25,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:00:25,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1116684261, now seen corresponding path program 1 times [2023-08-30 06:00:25,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:00:25,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496643634] [2023-08-30 06:00:25,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:00:25,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:00:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:00:25,218 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 06:00:25,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:00:25,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496643634] [2023-08-30 06:00:25,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496643634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:00:25,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:00:25,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 06:00:25,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99410307] [2023-08-30 06:00:25,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:00:25,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 06:00:25,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:00:25,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 06:00:25,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-30 06:00:25,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 399 [2023-08-30 06:00:25,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 51 transitions, 126 flow. Second operand has 8 states, 8 states have (on average 154.625) internal successors, (1237), 8 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states 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 06:00:25,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:00:25,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 399 [2023-08-30 06:00:25,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:00:29,042 INFO L130 PetriNetUnfolder]: 51885/68272 cut-off events. [2023-08-30 06:00:29,043 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2023-08-30 06:00:29,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135188 conditions, 68272 events. 51885/68272 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 2580. Compared 409343 event pairs, 51885 based on Foata normal form. 0/67925 useless extension candidates. Maximal degree in co-relation 135184. Up to 65536 conditions per place. [2023-08-30 06:00:29,535 INFO L137 encePairwiseOnDemand]: 397/399 looper letters, 42 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-08-30 06:00:29,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 50 transitions, 210 flow [2023-08-30 06:00:29,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 06:00:29,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 06:00:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-08-30 06:00:29,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4202172096908939 [2023-08-30 06:00:29,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-08-30 06:00:29,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-08-30 06:00:29,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:00:29,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-08-30 06:00:29,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states 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 06:00:29,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 06:00:29,539 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 06:00:29,540 INFO L175 Difference]: Start difference. First operand has 71 places, 51 transitions, 126 flow. Second operand 3 states and 503 transitions. [2023-08-30 06:00:29,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 50 transitions, 210 flow [2023-08-30 06:00:29,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 50 transitions, 209 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 06:00:29,541 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 125 flow [2023-08-30 06:00:29,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2023-08-30 06:00:29,541 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -23 predicate places. [2023-08-30 06:00:29,542 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 125 flow [2023-08-30 06:00:29,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 154.625) internal successors, (1237), 8 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states 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 06:00:29,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:00:29,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:00:29,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 06:00:29,542 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 06:00:29,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:00:29,543 INFO L85 PathProgramCache]: Analyzing trace with hash 715616713, now seen corresponding path program 1 times [2023-08-30 06:00:29,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:00:29,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018109003] [2023-08-30 06:00:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:00:29,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:00:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:00:30,998 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 06:00:30,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:00:30,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018109003] [2023-08-30 06:00:30,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018109003] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:00:30,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:00:30,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 06:00:30,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179052583] [2023-08-30 06:00:30,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:00:31,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 06:00:31,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:00:31,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 06:00:31,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 06:00:31,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 399 [2023-08-30 06:00:31,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states 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 06:00:31,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:00:31,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 399 [2023-08-30 06:00:31,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:00:53,255 INFO L130 PetriNetUnfolder]: 340125/423387 cut-off events. [2023-08-30 06:00:53,256 INFO L131 PetriNetUnfolder]: For 5903/5903 co-relation queries the response was YES. [2023-08-30 06:00:54,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853457 conditions, 423387 events. 340125/423387 cut-off events. For 5903/5903 co-relation queries the response was YES. Maximal size of possible extension queue 7868. Compared 2338595 event pairs, 87704 based on Foata normal form. 1/423388 useless extension candidates. Maximal degree in co-relation 853453. Up to 222239 conditions per place. [2023-08-30 06:00:55,795 INFO L137 encePairwiseOnDemand]: 390/399 looper letters, 143 selfloop transitions, 18 changer transitions 17/178 dead transitions. [2023-08-30 06:00:55,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 178 transitions, 761 flow [2023-08-30 06:00:55,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 06:00:55,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 06:00:55,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1229 transitions. [2023-08-30 06:00:55,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133667502088555 [2023-08-30 06:00:55,798 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1229 transitions. [2023-08-30 06:00:55,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1229 transitions. [2023-08-30 06:00:55,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:00:55,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1229 transitions. [2023-08-30 06:00:55,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states 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 06:00:55,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states 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 06:00:55,805 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states 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 06:00:55,806 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 125 flow. Second operand 6 states and 1229 transitions. [2023-08-30 06:00:55,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 178 transitions, 761 flow [2023-08-30 06:00:55,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 178 transitions, 760 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 06:00:55,809 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 246 flow [2023-08-30 06:00:55,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2023-08-30 06:00:55,810 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -16 predicate places. [2023-08-30 06:00:55,810 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 246 flow [2023-08-30 06:00:55,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states 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 06:00:55,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:00:55,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:00:55,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 06:00:55,811 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 06:00:55,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:00:55,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1348256613, now seen corresponding path program 2 times [2023-08-30 06:00:55,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:00:55,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366267968] [2023-08-30 06:00:55,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:00:55,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:00:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:00:56,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:00:56,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:00:56,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366267968] [2023-08-30 06:00:56,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366267968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:00:56,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:00:56,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 06:00:56,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310363719] [2023-08-30 06:00:56,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:00:56,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 06:00:56,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:00:56,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 06:00:56,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-30 06:00:56,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 399 [2023-08-30 06:00:56,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 246 flow. Second operand has 9 states, 9 states have (on average 183.77777777777777) internal successors, (1654), 9 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states 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 06:00:56,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:00:56,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 399 [2023-08-30 06:00:56,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:01:07,185 INFO L130 PetriNetUnfolder]: 115642/156768 cut-off events. [2023-08-30 06:01:07,185 INFO L131 PetriNetUnfolder]: For 6360/7184 co-relation queries the response was YES. [2023-08-30 06:01:08,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324048 conditions, 156768 events. 115642/156768 cut-off events. For 6360/7184 co-relation queries the response was YES. Maximal size of possible extension queue 6757. Compared 1093039 event pairs, 21836 based on Foata normal form. 480/147130 useless extension candidates. Maximal degree in co-relation 324041. Up to 112830 conditions per place. [2023-08-30 06:01:08,748 INFO L137 encePairwiseOnDemand]: 385/399 looper letters, 189 selfloop transitions, 93 changer transitions 0/310 dead transitions. [2023-08-30 06:01:08,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 310 transitions, 1321 flow [2023-08-30 06:01:08,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 06:01:08,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 06:01:08,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2611 transitions. [2023-08-30 06:01:08,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033738191632928 [2023-08-30 06:01:08,754 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2611 transitions. [2023-08-30 06:01:08,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2611 transitions. [2023-08-30 06:01:08,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:01:08,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2611 transitions. [2023-08-30 06:01:08,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 200.84615384615384) internal successors, (2611), 13 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states 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 06:01:08,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 399.0) internal successors, (5586), 14 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states 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 06:01:08,782 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 399.0) internal successors, (5586), 14 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states 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 06:01:08,783 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 246 flow. Second operand 13 states and 2611 transitions. [2023-08-30 06:01:08,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 310 transitions, 1321 flow [2023-08-30 06:01:13,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 310 transitions, 1313 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 06:01:13,160 INFO L231 Difference]: Finished difference. Result has 91 places, 181 transitions, 720 flow [2023-08-30 06:01:13,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=720, PETRI_PLACES=91, PETRI_TRANSITIONS=181} [2023-08-30 06:01:13,161 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -3 predicate places. [2023-08-30 06:01:13,161 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 181 transitions, 720 flow [2023-08-30 06:01:13,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 183.77777777777777) internal successors, (1654), 9 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states 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 06:01:13,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:01:13,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:01:13,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 06:01:13,162 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 06:01:13,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:01:13,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1911156773, now seen corresponding path program 3 times [2023-08-30 06:01:13,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:01:13,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456524311] [2023-08-30 06:01:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:01:13,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:01:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:01:13,568 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 06:01:13,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:01:13,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456524311] [2023-08-30 06:01:13,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456524311] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:01:13,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:01:13,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 06:01:13,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619718752] [2023-08-30 06:01:13,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:01:13,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 06:01:13,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:01:13,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 06:01:13,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 06:01:13,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 399 [2023-08-30 06:01:13,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 181 transitions, 720 flow. Second operand has 7 states, 7 states have (on average 184.14285714285714) internal successors, (1289), 7 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states 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 06:01:13,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:01:13,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 399 [2023-08-30 06:01:13,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:01:45,480 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([625] L147-->L150: Formula: (= v_~b~0_9 (ite (= (ite (or (not (= (mod v_~b~0_10 256) 0)) (= v_~x~0_7 1)) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_10, ~x~0=v_~x~0_7} OutVars{~b~0=v_~b~0_9, ~x~0=v_~x~0_7} AuxVars[] AssignedVars[~b~0][327], [Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), 145#L131true, Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), 213#L150true, 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, 87#L93true, 167#thread1EXITtrue, 214#L74true, 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 333#(<= (+ ~s~0 1) ~t~0), 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), 62#L181-4true, 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 140#thread4EXITtrue, 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 307#true, 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1)]) [2023-08-30 06:01:45,480 INFO L383 tUnfolder$Statistics]: this new event has 33 ancestors and is cut-off event [2023-08-30 06:01:45,480 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:01:45,480 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:01:45,480 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:01:46,511 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([625] L147-->L150: Formula: (= v_~b~0_9 (ite (= (ite (or (not (= (mod v_~b~0_10 256) 0)) (= v_~x~0_7 1)) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_10, ~x~0=v_~x~0_7} OutVars{~b~0=v_~b~0_9, ~x~0=v_~x~0_7} AuxVars[] AssignedVars[~b~0][327], [145#L131true, Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 213#L150true, 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, 87#L93true, 167#thread1EXITtrue, 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 214#L74true, 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 333#(<= (+ ~s~0 1) ~t~0), 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 140#thread4EXITtrue, 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 93#L182-1true, 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), 307#true]) [2023-08-30 06:01:46,511 INFO L383 tUnfolder$Statistics]: this new event has 34 ancestors and is cut-off event [2023-08-30 06:01:46,512 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-30 06:01:46,512 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-30 06:01:46,512 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-30 06:01:47,730 INFO L130 PetriNetUnfolder]: 288482/399786 cut-off events. [2023-08-30 06:01:47,730 INFO L131 PetriNetUnfolder]: For 165027/190703 co-relation queries the response was YES. [2023-08-30 06:01:50,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044684 conditions, 399786 events. 288482/399786 cut-off events. For 165027/190703 co-relation queries the response was YES. Maximal size of possible extension queue 16198. Compared 3225399 event pairs, 48861 based on Foata normal form. 4854/378340 useless extension candidates. Maximal degree in co-relation 1044675. Up to 185401 conditions per place. [2023-08-30 06:01:51,871 INFO L137 encePairwiseOnDemand]: 385/399 looper letters, 223 selfloop transitions, 129 changer transitions 0/380 dead transitions. [2023-08-30 06:01:51,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 380 transitions, 2064 flow [2023-08-30 06:01:51,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 06:01:51,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 06:01:51,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1824 transitions. [2023-08-30 06:01:51,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2023-08-30 06:01:51,875 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1824 transitions. [2023-08-30 06:01:51,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1824 transitions. [2023-08-30 06:01:51,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:01:51,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1824 transitions. [2023-08-30 06:01:51,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 202.66666666666666) internal successors, (1824), 9 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states 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 06:01:51,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 399.0) internal successors, (3990), 10 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states 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 06:01:51,885 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 399.0) internal successors, (3990), 10 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states 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 06:01:51,885 INFO L175 Difference]: Start difference. First operand has 91 places, 181 transitions, 720 flow. Second operand 9 states and 1824 transitions. [2023-08-30 06:01:51,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 380 transitions, 2064 flow [2023-08-30 06:02:42,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 380 transitions, 2064 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 06:02:42,485 INFO L231 Difference]: Finished difference. Result has 102 places, 233 transitions, 1377 flow [2023-08-30 06:02:42,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1377, PETRI_PLACES=102, PETRI_TRANSITIONS=233} [2023-08-30 06:02:42,486 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 8 predicate places. [2023-08-30 06:02:42,486 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 233 transitions, 1377 flow [2023-08-30 06:02:42,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 184.14285714285714) internal successors, (1289), 7 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states 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 06:02:42,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:02:42,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:02:42,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 06:02:42,487 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 06:02:42,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:02:42,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1291435257, now seen corresponding path program 4 times [2023-08-30 06:02:42,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:02:42,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332874740] [2023-08-30 06:02:42,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:02:42,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:02:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:02:42,800 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 06:02:42,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:02:42,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332874740] [2023-08-30 06:02:42,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332874740] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:02:42,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:02:42,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 06:02:42,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96221775] [2023-08-30 06:02:42,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:02:42,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 06:02:42,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:02:42,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 06:02:42,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 06:02:42,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 399 [2023-08-30 06:02:42,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 233 transitions, 1377 flow. Second operand has 8 states, 8 states have (on average 185.375) internal successors, (1483), 8 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states 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 06:02:42,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:02:42,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 399 [2023-08-30 06:02:42,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:03:16,939 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([625] L147-->L150: Formula: (= v_~b~0_9 (ite (= (ite (or (not (= (mod v_~b~0_10 256) 0)) (= v_~x~0_7 1)) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_10, ~x~0=v_~x~0_7} OutVars{~b~0=v_~b~0_9, ~x~0=v_~x~0_7} AuxVars[] AssignedVars[~b~0][391], [Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), 213#L150true, 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, 87#L93true, 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 39#thread5EXITtrue, Black: 339#(and (<= (+ 2 ~s~0) ~m3~0) (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), Black: 341#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), Black: 333#(<= (+ ~s~0 1) ~t~0), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), 37#thread2EXITtrue, 62#L181-4true, 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), 346#true, Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 334#(<= (+ 2 ~s~0) ~t~0), 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 221#L112true, 13#L52true, 307#true, 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1)]) [2023-08-30 06:03:16,939 INFO L383 tUnfolder$Statistics]: this new event has 32 ancestors and is cut-off event [2023-08-30 06:03:16,939 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-30 06:03:16,939 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-30 06:03:16,939 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-30 06:03:16,940 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([619] L128-->L131: Formula: (= v_~b~0_7 (ite (= (ite (or (= v_~x~0_6 1) (not (= 0 (mod v_~b~0_8 256)))) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_8, ~x~0=v_~x~0_6} OutVars{~b~0=v_~b~0_7, ~x~0=v_~x~0_6} AuxVars[] AssignedVars[~b~0][284], [Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), 145#L131true, Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, 87#L93true, 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 90#thread6EXITtrue, Black: 339#(and (<= (+ 2 ~s~0) ~m3~0) (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), Black: 341#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), Black: 333#(<= (+ ~s~0 1) ~t~0), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), 37#thread2EXITtrue, 62#L181-4true, 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), 346#true, Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 334#(<= (+ 2 ~s~0) ~t~0), 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 221#L112true, 13#L52true, 307#true, 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1)]) [2023-08-30 06:03:16,940 INFO L383 tUnfolder$Statistics]: this new event has 32 ancestors and is cut-off event [2023-08-30 06:03:16,940 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-30 06:03:16,940 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-30 06:03:16,940 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-30 06:03:17,980 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([625] L147-->L150: Formula: (= v_~b~0_9 (ite (= (ite (or (not (= (mod v_~b~0_10 256) 0)) (= v_~x~0_7 1)) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_10, ~x~0=v_~x~0_7} OutVars{~b~0=v_~b~0_9, ~x~0=v_~x~0_7} AuxVars[] AssignedVars[~b~0][391], [Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), 213#L150true, 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, 87#L93true, 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), Black: 339#(and (<= (+ 2 ~s~0) ~m3~0) (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), 39#thread5EXITtrue, Black: 341#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), Black: 333#(<= (+ ~s~0 1) ~t~0), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), 37#thread2EXITtrue, 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), 346#true, Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 334#(<= (+ 2 ~s~0) ~t~0), 221#L112true, 13#L52true, 93#L182-1true, 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), 307#true]) [2023-08-30 06:03:17,981 INFO L383 tUnfolder$Statistics]: this new event has 33 ancestors and is cut-off event [2023-08-30 06:03:17,981 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:03:17,981 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:03:17,981 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:03:17,981 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([619] L128-->L131: Formula: (= v_~b~0_7 (ite (= (ite (or (= v_~x~0_6 1) (not (= 0 (mod v_~b~0_8 256)))) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_8, ~x~0=v_~x~0_6} OutVars{~b~0=v_~b~0_7, ~x~0=v_~x~0_6} AuxVars[] AssignedVars[~b~0][284], [145#L131true, Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, 87#L93true, 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 90#thread6EXITtrue, Black: 339#(and (<= (+ 2 ~s~0) ~m3~0) (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), Black: 341#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), Black: 333#(<= (+ ~s~0 1) ~t~0), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), 37#thread2EXITtrue, 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), 346#true, Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 334#(<= (+ 2 ~s~0) ~t~0), 221#L112true, 13#L52true, 93#L182-1true, 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), 307#true]) [2023-08-30 06:03:17,981 INFO L383 tUnfolder$Statistics]: this new event has 33 ancestors and is cut-off event [2023-08-30 06:03:17,982 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:03:17,982 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:03:17,982 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:03:19,827 INFO L130 PetriNetUnfolder]: 297596/414896 cut-off events. [2023-08-30 06:03:19,827 INFO L131 PetriNetUnfolder]: For 646454/683230 co-relation queries the response was YES. [2023-08-30 06:03:23,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373462 conditions, 414896 events. 297596/414896 cut-off events. For 646454/683230 co-relation queries the response was YES. Maximal size of possible extension queue 16527. Compared 3384475 event pairs, 70514 based on Foata normal form. 12330/403209 useless extension candidates. Maximal degree in co-relation 1373449. Up to 292790 conditions per place. [2023-08-30 06:03:25,390 INFO L137 encePairwiseOnDemand]: 385/399 looper letters, 228 selfloop transitions, 202 changer transitions 0/458 dead transitions. [2023-08-30 06:03:25,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 458 transitions, 3420 flow [2023-08-30 06:03:25,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 06:03:25,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 06:03:25,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1823 transitions. [2023-08-30 06:03:25,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076580339738235 [2023-08-30 06:03:25,394 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1823 transitions. [2023-08-30 06:03:25,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1823 transitions. [2023-08-30 06:03:25,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:03:25,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1823 transitions. [2023-08-30 06:03:25,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 202.55555555555554) internal successors, (1823), 9 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states 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 06:03:25,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 399.0) internal successors, (3990), 10 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states 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 06:03:25,401 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 399.0) internal successors, (3990), 10 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states 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 06:03:25,401 INFO L175 Difference]: Start difference. First operand has 102 places, 233 transitions, 1377 flow. Second operand 9 states and 1823 transitions. [2023-08-30 06:03:25,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 458 transitions, 3420 flow [2023-08-30 06:04:25,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 458 transitions, 3407 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 06:04:25,359 INFO L231 Difference]: Finished difference. Result has 111 places, 321 transitions, 2606 flow [2023-08-30 06:04:25,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2606, PETRI_PLACES=111, PETRI_TRANSITIONS=321} [2023-08-30 06:04:25,361 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 17 predicate places. [2023-08-30 06:04:25,361 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 321 transitions, 2606 flow [2023-08-30 06:04:25,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 185.375) internal successors, (1483), 8 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states 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 06:04:25,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:04:25,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:04:25,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 06:04:25,362 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 06:04:25,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:04:25,363 INFO L85 PathProgramCache]: Analyzing trace with hash 493214089, now seen corresponding path program 5 times [2023-08-30 06:04:25,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:04:25,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862371317] [2023-08-30 06:04:25,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:04:25,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:04:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:04:25,629 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 06:04:25,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:04:25,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862371317] [2023-08-30 06:04:25,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862371317] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:04:25,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:04:25,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 06:04:25,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208817724] [2023-08-30 06:04:25,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:04:25,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 06:04:25,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:04:25,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 06:04:25,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 06:04:25,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 399 [2023-08-30 06:04:25,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 321 transitions, 2606 flow. Second operand has 6 states, 6 states have (on average 186.16666666666666) internal successors, (1117), 6 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states 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 06:04:25,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:04:25,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 399 [2023-08-30 06:04:25,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:05:06,004 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([625] L147-->L150: Formula: (= v_~b~0_9 (ite (= (ite (or (not (= (mod v_~b~0_10 256) 0)) (= v_~x~0_7 1)) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_10, ~x~0=v_~x~0_7} OutVars{~b~0=v_~b~0_9, ~x~0=v_~x~0_7} AuxVars[] AssignedVars[~b~0][395], [Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 192#L128true, 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), 213#L150true, 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, 87#L93true, 167#thread1EXITtrue, 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 214#L74true, Black: 339#(and (<= (+ 2 ~s~0) ~m3~0) (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), Black: 341#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 333#(<= (+ ~s~0 1) ~t~0), 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), 362#true, Black: 353#(<= (+ 2 ~s~0) ~m4~0), Black: 357#(and (<= 3 ~m4~0) (<= 3 ~t~0) (= ~s~0 0)), Black: 355#(and (<= 3 ~t~0) (<= (+ 2 ~s~0) ~m4~0) (= ~s~0 0)), 62#L181-4true, 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 346#true, 140#thread4EXITtrue, 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), 307#true]) [2023-08-30 06:05:06,005 INFO L383 tUnfolder$Statistics]: this new event has 32 ancestors and is cut-off event [2023-08-30 06:05:06,005 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-30 06:05:06,005 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-30 06:05:06,005 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-30 06:05:06,005 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([625] L147-->L150: Formula: (= v_~b~0_9 (ite (= (ite (or (not (= (mod v_~b~0_10 256) 0)) (= v_~x~0_7 1)) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_10, ~x~0=v_~x~0_7} OutVars{~b~0=v_~b~0_9, ~x~0=v_~x~0_7} AuxVars[] AssignedVars[~b~0][395], [Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), 192#L128true, 213#L150true, 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, 87#L93true, 167#thread1EXITtrue, 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 214#L74true, Black: 339#(and (<= (+ 2 ~s~0) ~m3~0) (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), Black: 341#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), Black: 333#(<= (+ ~s~0 1) ~t~0), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), Black: 353#(<= (+ 2 ~s~0) ~m4~0), 362#true, Black: 357#(and (<= 3 ~m4~0) (<= 3 ~t~0) (= ~s~0 0)), Black: 355#(and (<= 3 ~t~0) (<= (+ 2 ~s~0) ~m4~0) (= ~s~0 0)), 62#L181-4true, 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), 346#true, Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 140#thread4EXITtrue, 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 334#(<= (+ 2 ~s~0) ~t~0), 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), 307#true]) [2023-08-30 06:05:06,005 INFO L383 tUnfolder$Statistics]: this new event has 32 ancestors and is cut-off event [2023-08-30 06:05:06,005 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-30 06:05:06,005 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-30 06:05:06,006 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-30 06:05:07,423 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([625] L147-->L150: Formula: (= v_~b~0_9 (ite (= (ite (or (not (= (mod v_~b~0_10 256) 0)) (= v_~x~0_7 1)) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_10, ~x~0=v_~x~0_7} OutVars{~b~0=v_~b~0_9, ~x~0=v_~x~0_7} AuxVars[] AssignedVars[~b~0][395], [Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), 213#L150true, 192#L128true, 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, 87#L93true, 167#thread1EXITtrue, 214#L74true, 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), Black: 339#(and (<= (+ 2 ~s~0) ~m3~0) (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), Black: 341#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 333#(<= (+ ~s~0 1) ~t~0), 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), Black: 353#(<= (+ 2 ~s~0) ~m4~0), 362#true, Black: 357#(and (<= 3 ~m4~0) (<= 3 ~t~0) (= ~s~0 0)), Black: 355#(and (<= 3 ~t~0) (<= (+ 2 ~s~0) ~m4~0) (= ~s~0 0)), 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), 346#true, Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 140#thread4EXITtrue, 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 93#L182-1true, 307#true, 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1)]) [2023-08-30 06:05:07,423 INFO L383 tUnfolder$Statistics]: this new event has 33 ancestors and is cut-off event [2023-08-30 06:05:07,424 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:05:07,424 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:05:07,424 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:05:07,425 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([625] L147-->L150: Formula: (= v_~b~0_9 (ite (= (ite (or (not (= (mod v_~b~0_10 256) 0)) (= v_~x~0_7 1)) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_10, ~x~0=v_~x~0_7} OutVars{~b~0=v_~b~0_9, ~x~0=v_~x~0_7} AuxVars[] AssignedVars[~b~0][395], [Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), 213#L150true, 192#L128true, 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, 87#L93true, 167#thread1EXITtrue, 214#L74true, 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), Black: 339#(and (<= (+ 2 ~s~0) ~m3~0) (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), Black: 341#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), Black: 333#(<= (+ ~s~0 1) ~t~0), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), Black: 353#(<= (+ 2 ~s~0) ~m4~0), 362#true, Black: 357#(and (<= 3 ~m4~0) (<= 3 ~t~0) (= ~s~0 0)), Black: 355#(and (<= 3 ~t~0) (<= (+ 2 ~s~0) ~m4~0) (= ~s~0 0)), 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), 346#true, Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 140#thread4EXITtrue, 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 334#(<= (+ 2 ~s~0) ~t~0), 93#L182-1true, 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), 307#true]) [2023-08-30 06:05:07,425 INFO L383 tUnfolder$Statistics]: this new event has 33 ancestors and is cut-off event [2023-08-30 06:05:07,425 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:05:07,425 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:05:07,425 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:05:07,502 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([613] L109-->L112: Formula: (= (ite (= (ite (or (not (= (mod v_~b~0_6 256) 0)) (= v_~x~0_5 1)) 1 0) 0) 0 1) v_~b~0_5) InVars {~b~0=v_~b~0_6, ~x~0=v_~x~0_5} OutVars{~b~0=v_~b~0_5, ~x~0=v_~x~0_5} AuxVars[] AssignedVars[~b~0][265], [Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), 145#L131true, Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), 213#L150true, 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, 167#thread1EXITtrue, 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 214#L74true, Black: 339#(and (<= (+ 2 ~s~0) ~m3~0) (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), Black: 341#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), Black: 333#(<= (+ ~s~0 1) ~t~0), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), 362#true, Black: 353#(<= (+ 2 ~s~0) ~m4~0), Black: 357#(and (<= 3 ~m4~0) (<= 3 ~t~0) (= ~s~0 0)), Black: 355#(and (<= 3 ~t~0) (<= (+ 2 ~s~0) ~m4~0) (= ~s~0 0)), 62#L181-4true, 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), 329#true, Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 346#true, 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 221#L112true, 64#thread3EXITtrue, 307#true, 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1)]) [2023-08-30 06:05:07,502 INFO L383 tUnfolder$Statistics]: this new event has 33 ancestors and is not cut-off event [2023-08-30 06:05:07,502 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is not cut-off event [2023-08-30 06:05:07,502 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is not cut-off event [2023-08-30 06:05:07,502 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is not cut-off event [2023-08-30 06:05:08,125 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([613] L109-->L112: Formula: (= (ite (= (ite (or (not (= (mod v_~b~0_6 256) 0)) (= v_~x~0_5 1)) 1 0) 0) 0 1) v_~b~0_5) InVars {~b~0=v_~b~0_6, ~x~0=v_~x~0_5} OutVars{~b~0=v_~b~0_5, ~x~0=v_~x~0_5} AuxVars[] AssignedVars[~b~0][265], [Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), 145#L131true, Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), 213#L150true, 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, 167#thread1EXITtrue, 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 214#L74true, Black: 339#(and (<= (+ 2 ~s~0) ~m3~0) (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), Black: 341#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), Black: 333#(<= (+ ~s~0 1) ~t~0), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), 362#true, Black: 353#(<= (+ 2 ~s~0) ~m4~0), Black: 357#(and (<= 3 ~m4~0) (<= 3 ~t~0) (= ~s~0 0)), Black: 355#(and (<= 3 ~t~0) (<= (+ 2 ~s~0) ~m4~0) (= ~s~0 0)), 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), 329#true, Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 346#true, 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 221#L112true, 64#thread3EXITtrue, 93#L182-1true, 307#true, 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1)]) [2023-08-30 06:05:08,125 INFO L383 tUnfolder$Statistics]: this new event has 34 ancestors and is not cut-off event [2023-08-30 06:05:08,125 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is not cut-off event [2023-08-30 06:05:08,126 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is not cut-off event [2023-08-30 06:05:08,126 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is not cut-off event [2023-08-30 06:05:09,668 INFO L130 PetriNetUnfolder]: 296973/412652 cut-off events. [2023-08-30 06:05:09,668 INFO L131 PetriNetUnfolder]: For 976825/1020386 co-relation queries the response was YES. [2023-08-30 06:05:13,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511868 conditions, 412652 events. 296973/412652 cut-off events. For 976825/1020386 co-relation queries the response was YES. Maximal size of possible extension queue 16080. Compared 3336460 event pairs, 85427 based on Foata normal form. 7562/396112 useless extension candidates. Maximal degree in co-relation 1511851. Up to 308340 conditions per place. [2023-08-30 06:05:16,247 INFO L137 encePairwiseOnDemand]: 385/399 looper letters, 220 selfloop transitions, 250 changer transitions 0/498 dead transitions. [2023-08-30 06:05:16,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 498 transitions, 4772 flow [2023-08-30 06:05:16,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 06:05:16,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 06:05:16,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1411 transitions. [2023-08-30 06:05:16,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051915503043323 [2023-08-30 06:05:16,250 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1411 transitions. [2023-08-30 06:05:16,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1411 transitions. [2023-08-30 06:05:16,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:05:16,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1411 transitions. [2023-08-30 06:05:16,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.57142857142858) internal successors, (1411), 7 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states 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 06:05:16,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 399.0) internal successors, (3192), 8 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 06:05:16,255 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 399.0) internal successors, (3192), 8 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 06:05:16,255 INFO L175 Difference]: Start difference. First operand has 111 places, 321 transitions, 2606 flow. Second operand 7 states and 1411 transitions. [2023-08-30 06:05:16,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 498 transitions, 4772 flow [2023-08-30 06:06:09,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 498 transitions, 4501 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 06:06:09,959 INFO L231 Difference]: Finished difference. Result has 115 places, 401 transitions, 3794 flow [2023-08-30 06:06:09,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3794, PETRI_PLACES=115, PETRI_TRANSITIONS=401} [2023-08-30 06:06:09,960 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 21 predicate places. [2023-08-30 06:06:09,960 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 401 transitions, 3794 flow [2023-08-30 06:06:09,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 186.16666666666666) internal successors, (1117), 6 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states 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 06:06:09,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:06:09,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:06:09,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 06:06:09,961 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 06:06:09,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:06:09,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1021202661, now seen corresponding path program 6 times [2023-08-30 06:06:09,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:06:09,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568557360] [2023-08-30 06:06:09,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:06:09,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:06:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:06:10,303 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 06:06:10,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:06:10,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568557360] [2023-08-30 06:06:10,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568557360] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:06:10,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:06:10,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 06:06:10,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218314765] [2023-08-30 06:06:10,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:06:10,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 06:06:10,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:06:10,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 06:06:10,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-30 06:06:10,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 399 [2023-08-30 06:06:10,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 401 transitions, 3794 flow. Second operand has 9 states, 9 states have (on average 183.77777777777777) internal successors, (1654), 9 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states 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 06:06:10,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:06:10,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 399 [2023-08-30 06:06:10,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:06:53,142 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([625] L147-->L150: Formula: (= v_~b~0_9 (ite (= (ite (or (not (= (mod v_~b~0_10 256) 0)) (= v_~x~0_7 1)) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_10, ~x~0=v_~x~0_7} OutVars{~b~0=v_~b~0_9, ~x~0=v_~x~0_7} AuxVars[] AssignedVars[~b~0][438], [Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), 192#L128true, 213#L150true, 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, 87#L93true, 167#thread1EXITtrue, 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 214#L74true, Black: 339#(and (<= (+ 2 ~s~0) ~m3~0) (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), Black: 341#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 333#(<= (+ ~s~0 1) ~t~0), 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 375#true, 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), 362#true, Black: 353#(<= (+ 2 ~s~0) ~m4~0), Black: 357#(and (<= 3 ~m4~0) (<= 3 ~t~0) (= ~s~0 0)), Black: 355#(and (<= 3 ~t~0) (<= (+ 2 ~s~0) ~m4~0) (= ~s~0 0)), 62#L181-4true, 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 140#thread4EXITtrue, 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), Black: 369#(and (= ~m1~0 0) (<= 1 ~t~0) (<= 1 ~m2~0) (= ~s~0 0)), Black: 371#(and (<= 1 ~t~0) (<= 1 ~m2~0) (= ~s~0 0)), 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), 307#true]) [2023-08-30 06:06:53,143 INFO L383 tUnfolder$Statistics]: this new event has 32 ancestors and is cut-off event [2023-08-30 06:06:53,143 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-30 06:06:53,143 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-30 06:06:53,143 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-30 06:06:54,603 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([625] L147-->L150: Formula: (= v_~b~0_9 (ite (= (ite (or (not (= (mod v_~b~0_10 256) 0)) (= v_~x~0_7 1)) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_10, ~x~0=v_~x~0_7} OutVars{~b~0=v_~b~0_9, ~x~0=v_~x~0_7} AuxVars[] AssignedVars[~b~0][438], [Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 213#L150true, 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, 87#L93true, 167#thread1EXITtrue, 214#L74true, 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 39#thread5EXITtrue, Black: 339#(and (<= (+ 2 ~s~0) ~m3~0) (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), Black: 341#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), Black: 333#(<= (+ ~s~0 1) ~t~0), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 375#true, 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), Black: 353#(<= (+ 2 ~s~0) ~m4~0), 362#true, Black: 357#(and (<= 3 ~m4~0) (<= 3 ~t~0) (= ~s~0 0)), Black: 355#(and (<= 3 ~t~0) (<= (+ 2 ~s~0) ~m4~0) (= ~s~0 0)), 62#L181-4true, 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 334#(<= (+ 2 ~s~0) ~t~0), Black: 369#(and (= ~m1~0 0) (<= 1 ~t~0) (<= 1 ~m2~0) (= ~s~0 0)), Black: 371#(and (<= 1 ~t~0) (<= 1 ~m2~0) (= ~s~0 0)), 221#L112true, 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), 307#true]) [2023-08-30 06:06:54,604 INFO L383 tUnfolder$Statistics]: this new event has 33 ancestors and is cut-off event [2023-08-30 06:06:54,604 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:06:54,604 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:06:54,604 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:06:55,260 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([625] L147-->L150: Formula: (= v_~b~0_9 (ite (= (ite (or (not (= (mod v_~b~0_10 256) 0)) (= v_~x~0_7 1)) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_10, ~x~0=v_~x~0_7} OutVars{~b~0=v_~b~0_9, ~x~0=v_~x~0_7} AuxVars[] AssignedVars[~b~0][438], [Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 213#L150true, 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), 192#L128true, 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, 87#L93true, 167#thread1EXITtrue, 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 214#L74true, Black: 339#(and (<= (+ 2 ~s~0) ~m3~0) (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), Black: 341#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 333#(<= (+ ~s~0 1) ~t~0), 375#true, 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), 362#true, Black: 353#(<= (+ 2 ~s~0) ~m4~0), Black: 357#(and (<= 3 ~m4~0) (<= 3 ~t~0) (= ~s~0 0)), Black: 355#(and (<= 3 ~t~0) (<= (+ 2 ~s~0) ~m4~0) (= ~s~0 0)), 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 140#thread4EXITtrue, 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), Black: 369#(and (= ~m1~0 0) (<= 1 ~t~0) (<= 1 ~m2~0) (= ~s~0 0)), Black: 371#(and (<= 1 ~t~0) (<= 1 ~m2~0) (= ~s~0 0)), 93#L182-1true, 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), 307#true]) [2023-08-30 06:06:55,261 INFO L383 tUnfolder$Statistics]: this new event has 33 ancestors and is cut-off event [2023-08-30 06:06:55,261 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:06:55,261 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:06:55,261 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:06:56,356 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([625] L147-->L150: Formula: (= v_~b~0_9 (ite (= (ite (or (not (= (mod v_~b~0_10 256) 0)) (= v_~x~0_7 1)) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_10, ~x~0=v_~x~0_7} OutVars{~b~0=v_~b~0_9, ~x~0=v_~x~0_7} AuxVars[] AssignedVars[~b~0][438], [Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 213#L150true, 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, 87#L93true, 167#thread1EXITtrue, 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 214#L74true, 39#thread5EXITtrue, Black: 339#(and (<= (+ 2 ~s~0) ~m3~0) (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), Black: 341#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), Black: 333#(<= (+ ~s~0 1) ~t~0), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 375#true, 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), 362#true, Black: 353#(<= (+ 2 ~s~0) ~m4~0), Black: 357#(and (<= 3 ~m4~0) (<= 3 ~t~0) (= ~s~0 0)), Black: 355#(and (<= 3 ~t~0) (<= (+ 2 ~s~0) ~m4~0) (= ~s~0 0)), 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 334#(<= (+ 2 ~s~0) ~t~0), 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), Black: 369#(and (= ~m1~0 0) (<= 1 ~t~0) (<= 1 ~m2~0) (= ~s~0 0)), Black: 371#(and (<= 1 ~t~0) (<= 1 ~m2~0) (= ~s~0 0)), 221#L112true, 93#L182-1true, 307#true, 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1)]) [2023-08-30 06:06:56,356 INFO L383 tUnfolder$Statistics]: this new event has 34 ancestors and is cut-off event [2023-08-30 06:06:56,356 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-30 06:06:56,357 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-30 06:06:56,357 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-30 06:06:58,173 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([745] L74-->thread2EXIT: Formula: (and (= (+ v_~s~0_127 1) v_~s~0_126) (= |v_thread2Thread1of1ForFork3_#res#1.base_7| 0) (= |v_thread2Thread1of1ForFork3_#res#1.offset_7| 0)) InVars {~s~0=v_~s~0_127} OutVars{thread2Thread1of1ForFork3_#t~post4#1=|v_thread2Thread1of1ForFork3_#t~post4#1_5|, thread2Thread1of1ForFork3_#res#1.offset=|v_thread2Thread1of1ForFork3_#res#1.offset_7|, thread2Thread1of1ForFork3_#res#1.base=|v_thread2Thread1of1ForFork3_#res#1.base_7|, ~s~0=v_~s~0_126} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_#t~post4#1, thread2Thread1of1ForFork3_#res#1.offset, thread2Thread1of1ForFork3_#res#1.base, ~s~0][213], [Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), 192#L128true, 213#L150true, 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, 87#L93true, 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 183#L183-1true, Black: 339#(and (<= (+ 2 ~s~0) ~m3~0) (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), Black: 341#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), Black: 333#(<= (+ ~s~0 1) ~t~0), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 375#true, 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), 37#thread2EXITtrue, 362#true, Black: 353#(<= (+ 2 ~s~0) ~m4~0), Black: 357#(and (<= 3 ~m4~0) (<= 3 ~t~0) (= ~s~0 0)), Black: 355#(and (<= 3 ~t~0) (<= (+ 2 ~s~0) ~m4~0) (= ~s~0 0)), 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, 329#true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 140#thread4EXITtrue, 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), Black: 369#(and (= ~m1~0 0) (<= 1 ~t~0) (<= 1 ~m2~0) (= ~s~0 0)), Black: 371#(and (<= 1 ~t~0) (<= 1 ~m2~0) (= ~s~0 0)), 307#true, 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1)]) [2023-08-30 06:06:58,174 INFO L383 tUnfolder$Statistics]: this new event has 36 ancestors and is cut-off event [2023-08-30 06:06:58,174 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-30 06:06:58,174 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-30 06:06:58,174 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-30 06:06:59,576 INFO L130 PetriNetUnfolder]: 300577/418940 cut-off events. [2023-08-30 06:06:59,577 INFO L131 PetriNetUnfolder]: For 1155409/1209762 co-relation queries the response was YES. [2023-08-30 06:07:04,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1568238 conditions, 418940 events. 300577/418940 cut-off events. For 1155409/1209762 co-relation queries the response was YES. Maximal size of possible extension queue 16409. Compared 3414107 event pairs, 84358 based on Foata normal form. 8898/403513 useless extension candidates. Maximal degree in co-relation 1568219. Up to 308622 conditions per place. [2023-08-30 06:07:08,016 INFO L137 encePairwiseOnDemand]: 385/399 looper letters, 226 selfloop transitions, 375 changer transitions 0/629 dead transitions. [2023-08-30 06:07:08,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 629 transitions, 6694 flow [2023-08-30 06:07:08,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 06:07:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 06:07:08,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2599 transitions. [2023-08-30 06:07:08,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5010603431656063 [2023-08-30 06:07:08,024 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2599 transitions. [2023-08-30 06:07:08,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2599 transitions. [2023-08-30 06:07:08,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:07:08,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2599 transitions. [2023-08-30 06:07:08,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 199.92307692307693) internal successors, (2599), 13 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states 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 06:07:08,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 399.0) internal successors, (5586), 14 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states 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 06:07:08,048 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 399.0) internal successors, (5586), 14 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states 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 06:07:08,049 INFO L175 Difference]: Start difference. First operand has 115 places, 401 transitions, 3794 flow. Second operand 13 states and 2599 transitions. [2023-08-30 06:07:08,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 629 transitions, 6694 flow [2023-08-30 06:08:12,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 629 transitions, 6355 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 06:08:12,956 INFO L231 Difference]: Finished difference. Result has 127 places, 499 transitions, 5534 flow [2023-08-30 06:08:12,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=3553, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5534, PETRI_PLACES=127, PETRI_TRANSITIONS=499} [2023-08-30 06:08:12,956 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 33 predicate places. [2023-08-30 06:08:12,957 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 499 transitions, 5534 flow [2023-08-30 06:08:12,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 183.77777777777777) internal successors, (1654), 9 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states 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 06:08:12,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:08:12,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:08:12,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 06:08:12,958 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 06:08:12,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:08:12,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1566796969, now seen corresponding path program 7 times [2023-08-30 06:08:12,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:08:12,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843251148] [2023-08-30 06:08:12,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:08:12,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:08:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:08:13,227 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 06:08:13,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:08:13,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843251148] [2023-08-30 06:08:13,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843251148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:08:13,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:08:13,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 06:08:13,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853244430] [2023-08-30 06:08:13,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:08:13,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 06:08:13,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:08:13,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 06:08:13,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 06:08:13,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 399 [2023-08-30 06:08:13,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 499 transitions, 5534 flow. Second operand has 8 states, 8 states have (on average 183.375) internal successors, (1467), 8 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states 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 06:08:13,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:08:13,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 399 [2023-08-30 06:08:13,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:09:03,648 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([773] L93-->thread3EXIT: Formula: (and (= |v_thread3Thread1of1ForFork1_#res#1.base_7| 0) (= |v_thread3Thread1of1ForFork1_#res#1.offset_7| 0) (= (+ v_~s~0_141 1) v_~s~0_140)) InVars {~s~0=v_~s~0_141} OutVars{thread3Thread1of1ForFork1_#res#1.offset=|v_thread3Thread1of1ForFork1_#res#1.offset_7|, thread3Thread1of1ForFork1_#res#1.base=|v_thread3Thread1of1ForFork1_#res#1.base_7|, thread3Thread1of1ForFork1_#t~post6#1=|v_thread3Thread1of1ForFork1_#t~post6#1_7|, ~s~0=v_~s~0_140} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_#res#1.offset, thread3Thread1of1ForFork1_#res#1.base, thread3Thread1of1ForFork1_#t~post6#1, ~s~0][219], [397#true, Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 213#L150true, 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), Black: 391#(and (<= 4 ~m6~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, Black: 393#(and (<= 4 ~m6~0) (<= 4 ~t~0) (= ~s~0 0)), 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), Black: 339#(and (<= (+ 2 ~s~0) ~m3~0) (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), 39#thread5EXITtrue, Black: 341#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), Black: 333#(<= (+ ~s~0 1) ~t~0), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 375#true, 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), 14#L182-2true, Black: 353#(<= (+ 2 ~s~0) ~m4~0), Black: 357#(and (<= 3 ~m4~0) (<= 3 ~t~0) (= ~s~0 0)), Black: 355#(and (<= 3 ~t~0) (<= (+ 2 ~s~0) ~m4~0) (= ~s~0 0)), 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, 125#$Ultimate##0true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), 329#true, Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), Black: 369#(and (= ~m1~0 0) (<= 1 ~t~0) (<= 1 ~m2~0) (= ~s~0 0)), Black: 371#(and (<= 1 ~t~0) (<= 1 ~m2~0) (= ~s~0 0)), 221#L112true, 64#thread3EXITtrue, 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), 307#true]) [2023-08-30 06:09:03,648 INFO L383 tUnfolder$Statistics]: this new event has 33 ancestors and is cut-off event [2023-08-30 06:09:03,649 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:09:03,649 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:09:03,649 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-30 06:09:05,663 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([773] L93-->thread3EXIT: Formula: (and (= |v_thread3Thread1of1ForFork1_#res#1.base_7| 0) (= |v_thread3Thread1of1ForFork1_#res#1.offset_7| 0) (= (+ v_~s~0_141 1) v_~s~0_140)) InVars {~s~0=v_~s~0_141} OutVars{thread3Thread1of1ForFork1_#res#1.offset=|v_thread3Thread1of1ForFork1_#res#1.offset_7|, thread3Thread1of1ForFork1_#res#1.base=|v_thread3Thread1of1ForFork1_#res#1.base_7|, thread3Thread1of1ForFork1_#t~post6#1=|v_thread3Thread1of1ForFork1_#t~post6#1_7|, ~s~0=v_~s~0_140} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_#res#1.offset, thread3Thread1of1ForFork1_#res#1.base, thread3Thread1of1ForFork1_#t~post6#1, ~s~0][219], [397#true, Black: 323#(and (<= 4 ~m5~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), Black: 325#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 213#L150true, 276#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), Black: 391#(and (<= 4 ~m6~0) (= ~m1~0 0) (<= 4 ~t~0) (= ~s~0 0)), 284#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (< 0 (+ |ULTIMATE.start_main_~#t1~0#1.offset| 1))), 239#true, Black: 393#(and (<= 4 ~m6~0) (<= 4 ~t~0) (= ~s~0 0)), 260#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 183#L183-1true, Black: 339#(and (<= (+ 2 ~s~0) ~m3~0) (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), 39#thread5EXITtrue, Black: 341#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), 244#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), Black: 333#(<= (+ ~s~0 1) ~t~0), 280#(and (= (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|) 4) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 272#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 264#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 256#(and (<= 0 |ULTIMATE.start_main_~#t3~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t3~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 375#true, 248#(and (<= 0 |ULTIMATE.start_main_~#t2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~#t2~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), Black: 353#(<= (+ 2 ~s~0) ~m4~0), Black: 357#(and (<= 3 ~m4~0) (<= 3 ~t~0) (= ~s~0 0)), Black: 355#(and (<= 3 ~t~0) (<= (+ 2 ~s~0) ~m4~0) (= ~s~0 0)), 252#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 295#true, 125#$Ultimate##0true, Black: 297#(= (+ (* (div ~b~0 256) 256) (* (div (+ (* (- 256) (div ~b~0 256)) ~b~0) 4294967296) 4294967296)) ~b~0), 329#true, Black: 300#(and (<= ~b~0 0) (<= 0 ~b~0)), 268#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), Black: 369#(and (= ~m1~0 0) (<= 1 ~t~0) (<= 1 ~m2~0) (= ~s~0 0)), Black: 371#(and (<= 1 ~t~0) (<= 1 ~m2~0) (= ~s~0 0)), 221#L112true, 64#thread3EXITtrue, 307#true, 293#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1)]) [2023-08-30 06:09:05,664 INFO L383 tUnfolder$Statistics]: this new event has 34 ancestors and is cut-off event [2023-08-30 06:09:05,664 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-30 06:09:05,664 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-30 06:09:05,664 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-30 06:09:09,240 INFO L130 PetriNetUnfolder]: 309218/435635 cut-off events. [2023-08-30 06:09:09,241 INFO L131 PetriNetUnfolder]: For 1299357/1403511 co-relation queries the response was YES. [2023-08-30 06:09:13,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1668473 conditions, 435635 events. 309218/435635 cut-off events. For 1299357/1403511 co-relation queries the response was YES. Maximal size of possible extension queue 17258. Compared 3672262 event pairs, 48220 based on Foata normal form. 25708/437581 useless extension candidates. Maximal degree in co-relation 1668452. Up to 199374 conditions per place. [2023-08-30 06:09:16,238 INFO L137 encePairwiseOnDemand]: 385/399 looper letters, 297 selfloop transitions, 499 changer transitions 1/825 dead transitions. [2023-08-30 06:09:16,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 825 transitions, 9310 flow [2023-08-30 06:09:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 06:09:16,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 06:09:16,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2422 transitions. [2023-08-30 06:09:16,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058479532163743 [2023-08-30 06:09:16,242 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2422 transitions. [2023-08-30 06:09:16,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2422 transitions. [2023-08-30 06:09:16,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:09:16,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2422 transitions. [2023-08-30 06:09:16,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 201.83333333333334) internal successors, (2422), 12 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states 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 06:09:16,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 399.0) internal successors, (5187), 13 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states 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 06:09:16,250 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 399.0) internal successors, (5187), 13 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states 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 06:09:16,250 INFO L175 Difference]: Start difference. First operand has 127 places, 499 transitions, 5534 flow. Second operand 12 states and 2422 transitions. [2023-08-30 06:09:16,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 825 transitions, 9310 flow Killed by 15