./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.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-4.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 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --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 05:57:49,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:57:49,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:57:49,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:57:49,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:57:49,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:57:49,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:57:49,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:57:49,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:57:49,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:57:49,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:57:49,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:57:49,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:57:49,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:57:49,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:57:49,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:57:49,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:57:49,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:57:49,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:57:49,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:57:49,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:57:49,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:57:49,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:57:49,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:57:49,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:57:49,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:57:49,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:57:49,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:57:49,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:57:49,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:57:49,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:57:49,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:57:49,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:57:49,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:57:49,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:57:49,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:57:49,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:57:49,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:57:49,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:57:49,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:57:49,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:57:49,962 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 05:57:49,994 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:57:49,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:57:49,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:57:49,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:57:49,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:57:49,997 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:57:49,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:57:49,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:57:49,998 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:57:49,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:57:49,999 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:57:49,999 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:57:49,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:57:49,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:57:49,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:57:50,000 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:57:50,000 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:57:50,000 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:57:50,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:57:50,001 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:57:50,001 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:57:50,001 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:57:50,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:57:50,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:57:50,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:57:50,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:57:50,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:57:50,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:57:50,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 05:57:50,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 05:57:50,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:57:50,003 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:57:50,003 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:57:50,004 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:57:50,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:57:50,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:57:50,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:57:50,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:57:50,297 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:57:50,297 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:57:50,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-08-30 05:57:51,403 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:57:51,645 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:57:51,646 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-08-30 05:57:51,651 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17a171d02/7b1e685430c2474c982334ad742977a2/FLAG10e4b6d95 [2023-08-30 05:57:51,662 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17a171d02/7b1e685430c2474c982334ad742977a2 [2023-08-30 05:57:51,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:57:51,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:57:51,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:57:51,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:57:51,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:57:51,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:57:51" (1/1) ... [2023-08-30 05:57:51,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2290fad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:51, skipping insertion in model container [2023-08-30 05:57:51,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:57:51" (1/1) ... [2023-08-30 05:57:51,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:57:51,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:57:51,859 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-4.wvr.c[3526,3539] [2023-08-30 05:57:51,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:57:51,886 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 05:57:51,927 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-4.wvr.c[3526,3539] [2023-08-30 05:57:51,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:57:51,936 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:57:51,936 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:57:51,942 INFO L208 MainTranslator]: Completed translation [2023-08-30 05:57:51,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:51 WrapperNode [2023-08-30 05:57:51,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:57:51,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 05:57:51,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 05:57:51,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 05:57:51,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:51" (1/1) ... [2023-08-30 05:57:51,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:51" (1/1) ... [2023-08-30 05:57:52,013 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 206 [2023-08-30 05:57:52,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 05:57:52,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 05:57:52,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 05:57:52,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 05:57:52,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:51" (1/1) ... [2023-08-30 05:57:52,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:51" (1/1) ... [2023-08-30 05:57:52,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:51" (1/1) ... [2023-08-30 05:57:52,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:51" (1/1) ... [2023-08-30 05:57:52,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:51" (1/1) ... [2023-08-30 05:57:52,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:51" (1/1) ... [2023-08-30 05:57:52,042 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:51" (1/1) ... [2023-08-30 05:57:52,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:51" (1/1) ... [2023-08-30 05:57:52,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 05:57:52,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 05:57:52,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 05:57:52,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 05:57:52,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:51" (1/1) ... [2023-08-30 05:57:52,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:57:52,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:57:52,095 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 05:57:52,114 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 05:57:52,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 05:57:52,128 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 05:57:52,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 05:57:52,128 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 05:57:52,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 05:57:52,128 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 05:57:52,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 05:57:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 05:57:52,129 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 05:57:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 05:57:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 05:57:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 05:57:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 05:57:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 05:57:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 05:57:52,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 05:57:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 05:57:52,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 05:57:52,131 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 05:57:52,277 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 05:57:52,294 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 05:57:52,583 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 05:57:52,653 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 05:57:52,654 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 05:57:52,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:57:52 BoogieIcfgContainer [2023-08-30 05:57:52,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 05:57:52,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 05:57:52,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 05:57:52,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 05:57:52,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:57:51" (1/3) ... [2023-08-30 05:57:52,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21acbdb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:57:52, skipping insertion in model container [2023-08-30 05:57:52,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:51" (2/3) ... [2023-08-30 05:57:52,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21acbdb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:57:52, skipping insertion in model container [2023-08-30 05:57:52,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:57:52" (3/3) ... [2023-08-30 05:57:52,663 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-08-30 05:57:52,676 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 05:57:52,677 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-30 05:57:52,677 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 05:57:52,766 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 05:57:52,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 163 transitions, 358 flow [2023-08-30 05:57:52,862 INFO L130 PetriNetUnfolder]: 2/159 cut-off events. [2023-08-30 05:57:52,862 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 05:57:52,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 159 events. 2/159 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 111 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2023-08-30 05:57:52,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 163 transitions, 358 flow [2023-08-30 05:57:52,878 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 155 transitions, 334 flow [2023-08-30 05:57:52,882 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 05:57:52,901 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 155 transitions, 334 flow [2023-08-30 05:57:52,909 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 155 transitions, 334 flow [2023-08-30 05:57:52,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 155 transitions, 334 flow [2023-08-30 05:57:52,965 INFO L130 PetriNetUnfolder]: 2/155 cut-off events. [2023-08-30 05:57:52,965 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 05:57:52,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 155 events. 2/155 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 110 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2023-08-30 05:57:52,976 INFO L119 LiptonReduction]: Number of co-enabled transitions 1702 [2023-08-30 05:57:58,995 INFO L134 LiptonReduction]: Checked pairs total: 9805 [2023-08-30 05:57:58,995 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-08-30 05:57:59,006 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 05:57:59,012 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;@5f167099, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 05:57:59,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-30 05:57:59,013 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 05:57:59,014 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:57:59,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:59,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 05:57:59,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:57:59,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:59,019 INFO L85 PathProgramCache]: Analyzing trace with hash 640, now seen corresponding path program 1 times [2023-08-30 05:57:59,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:59,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318519116] [2023-08-30 05:57:59,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:59,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:59,124 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 05:57:59,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:59,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318519116] [2023-08-30 05:57:59,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318519116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:59,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:59,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 05:57:59,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166234262] [2023-08-30 05:57:59,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:59,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 05:57:59,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:59,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 05:57:59,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 05:57:59,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 306 [2023-08-30 05:57:59,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 126 flow. Second operand has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 05:57:59,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:59,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 306 [2023-08-30 05:57:59,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:59,815 INFO L130 PetriNetUnfolder]: 4185/6250 cut-off events. [2023-08-30 05:57:59,816 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2023-08-30 05:57:59,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12395 conditions, 6250 events. 4185/6250 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 35775 event pairs, 4185 based on Foata normal form. 0/5313 useless extension candidates. Maximal degree in co-relation 10254. Up to 5885 conditions per place. [2023-08-30 05:57:59,867 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 43 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2023-08-30 05:57:59,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 48 transitions, 206 flow [2023-08-30 05:57:59,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 05:57:59,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 05:57:59,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 326 transitions. [2023-08-30 05:57:59,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5326797385620915 [2023-08-30 05:57:59,889 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 326 transitions. [2023-08-30 05:57:59,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 326 transitions. [2023-08-30 05:57:59,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:59,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 326 transitions. [2023-08-30 05:57:59,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 163.0) internal successors, (326), 2 states have internal predecessors, (326), 0 states have call successors, (0), 0 states 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 05:57:59,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states 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 05:57:59,906 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states 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 05:57:59,908 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 126 flow. Second operand 2 states and 326 transitions. [2023-08-30 05:57:59,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 48 transitions, 206 flow [2023-08-30 05:57:59,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 190 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-30 05:57:59,920 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 104 flow [2023-08-30 05:57:59,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-08-30 05:57:59,925 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2023-08-30 05:57:59,927 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 104 flow [2023-08-30 05:57:59,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 05:57:59,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:59,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:57:59,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 05:57:59,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:57:59,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:59,933 INFO L85 PathProgramCache]: Analyzing trace with hash 631870, now seen corresponding path program 1 times [2023-08-30 05:57:59,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:59,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048353919] [2023-08-30 05:57:59,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:59,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:00,256 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 05:58:00,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:00,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048353919] [2023-08-30 05:58:00,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048353919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:00,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:00,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:58:00,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982314526] [2023-08-30 05:58:00,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:00,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:58:00,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:00,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:58:00,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:58:00,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 306 [2023-08-30 05:58:00,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:58:00,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:00,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 306 [2023-08-30 05:58:00,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:00,786 INFO L130 PetriNetUnfolder]: 4038/6033 cut-off events. [2023-08-30 05:58:00,787 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-30 05:58:00,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11790 conditions, 6033 events. 4038/6033 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 34506 event pairs, 4038 based on Foata normal form. 0/5164 useless extension candidates. Maximal degree in co-relation 11787. Up to 5669 conditions per place. [2023-08-30 05:58:00,822 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 40 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-08-30 05:58:00,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 182 flow [2023-08-30 05:58:00,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:58:00,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:58:00,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 430 transitions. [2023-08-30 05:58:00,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684095860566449 [2023-08-30 05:58:00,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 430 transitions. [2023-08-30 05:58:00,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 430 transitions. [2023-08-30 05:58:00,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:00,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 430 transitions. [2023-08-30 05:58:00,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:58:00,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 05:58:00,829 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 05:58:00,829 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 104 flow. Second operand 3 states and 430 transitions. [2023-08-30 05:58:00,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 182 flow [2023-08-30 05:58:00,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 05:58:00,831 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 102 flow [2023-08-30 05:58:00,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-08-30 05:58:00,832 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2023-08-30 05:58:00,832 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 102 flow [2023-08-30 05:58:00,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:58:00,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:00,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:58:00,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 05:58:00,834 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:00,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:00,834 INFO L85 PathProgramCache]: Analyzing trace with hash 631869, now seen corresponding path program 1 times [2023-08-30 05:58:00,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:00,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200906513] [2023-08-30 05:58:00,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:00,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:00,979 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 05:58:00,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:00,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200906513] [2023-08-30 05:58:00,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200906513] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:00,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:00,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:58:00,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818742851] [2023-08-30 05:58:00,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:00,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:58:00,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:00,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:58:00,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:58:01,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 306 [2023-08-30 05:58:01,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 05:58:01,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:01,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 306 [2023-08-30 05:58:01,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:01,443 INFO L130 PetriNetUnfolder]: 3891/5816 cut-off events. [2023-08-30 05:58:01,443 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-30 05:58:01,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11360 conditions, 5816 events. 3891/5816 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 33192 event pairs, 3891 based on Foata normal form. 0/5015 useless extension candidates. Maximal degree in co-relation 11356. Up to 5454 conditions per place. [2023-08-30 05:58:01,482 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 38 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-08-30 05:58:01,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 176 flow [2023-08-30 05:58:01,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:58:01,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:58:01,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-30 05:58:01,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485838779956427 [2023-08-30 05:58:01,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-30 05:58:01,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-30 05:58:01,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:01,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-30 05:58:01,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 05:58:01,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 05:58:01,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 05:58:01,490 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 102 flow. Second operand 3 states and 446 transitions. [2023-08-30 05:58:01,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 176 flow [2023-08-30 05:58:01,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 44 transitions, 175 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:58:01,494 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 99 flow [2023-08-30 05:58:01,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-08-30 05:58:01,495 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -11 predicate places. [2023-08-30 05:58:01,498 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 99 flow [2023-08-30 05:58:01,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 05:58:01,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:01,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:58:01,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 05:58:01,499 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:01,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:01,500 INFO L85 PathProgramCache]: Analyzing trace with hash 607239920, now seen corresponding path program 1 times [2023-08-30 05:58:01,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:01,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060743717] [2023-08-30 05:58:01,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:01,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:01,587 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 05:58:01,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:01,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060743717] [2023-08-30 05:58:01,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060743717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:01,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:01,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:58:01,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116598765] [2023-08-30 05:58:01,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:01,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:58:01,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:01,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:58:01,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:58:01,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 306 [2023-08-30 05:58:01,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states 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 05:58:01,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:01,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 306 [2023-08-30 05:58:01,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:02,062 INFO L130 PetriNetUnfolder]: 3843/5732 cut-off events. [2023-08-30 05:58:02,063 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-30 05:58:02,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11197 conditions, 5732 events. 3843/5732 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 32664 event pairs, 3843 based on Foata normal form. 0/4965 useless extension candidates. Maximal degree in co-relation 11193. Up to 5374 conditions per place. [2023-08-30 05:58:02,086 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 36 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 05:58:02,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 169 flow [2023-08-30 05:58:02,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:58:02,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:58:02,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-08-30 05:58:02,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48366013071895425 [2023-08-30 05:58:02,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-08-30 05:58:02,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-08-30 05:58:02,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:02,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-08-30 05:58:02,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 05:58:02,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 05:58:02,093 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 05:58:02,093 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 99 flow. Second operand 3 states and 444 transitions. [2023-08-30 05:58:02,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 169 flow [2023-08-30 05:58:02,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:58:02,094 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 96 flow [2023-08-30 05:58:02,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-08-30 05:58:02,095 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -12 predicate places. [2023-08-30 05:58:02,095 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 96 flow [2023-08-30 05:58:02,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states 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 05:58:02,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:02,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:58:02,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 05:58:02,097 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:02,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:02,097 INFO L85 PathProgramCache]: Analyzing trace with hash 607239919, now seen corresponding path program 1 times [2023-08-30 05:58:02,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:02,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908543974] [2023-08-30 05:58:02,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:02,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:02,149 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 05:58:02,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:02,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908543974] [2023-08-30 05:58:02,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908543974] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:02,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:02,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:58:02,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189446004] [2023-08-30 05:58:02,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:02,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:58:02,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:02,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:58:02,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:58:02,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 306 [2023-08-30 05:58:02,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states 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 05:58:02,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:02,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 306 [2023-08-30 05:58:02,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:02,551 INFO L130 PetriNetUnfolder]: 3795/5648 cut-off events. [2023-08-30 05:58:02,551 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-30 05:58:02,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11034 conditions, 5648 events. 3795/5648 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 32188 event pairs, 3795 based on Foata normal form. 0/4915 useless extension candidates. Maximal degree in co-relation 11030. Up to 5294 conditions per place. [2023-08-30 05:58:02,577 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 34 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-30 05:58:02,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 162 flow [2023-08-30 05:58:02,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:58:02,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:58:02,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-30 05:58:02,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46187363834422657 [2023-08-30 05:58:02,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-30 05:58:02,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-30 05:58:02,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:02,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-30 05:58:02,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 05:58:02,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 05:58:02,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 05:58:02,584 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 96 flow. Second operand 3 states and 424 transitions. [2023-08-30 05:58:02,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 162 flow [2023-08-30 05:58:02,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 40 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:58:02,585 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 93 flow [2023-08-30 05:58:02,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-08-30 05:58:02,588 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -13 predicate places. [2023-08-30 05:58:02,588 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 93 flow [2023-08-30 05:58:02,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states 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 05:58:02,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:02,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:58:02,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 05:58:02,589 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:02,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:02,590 INFO L85 PathProgramCache]: Analyzing trace with hash -557973210, now seen corresponding path program 1 times [2023-08-30 05:58:02,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:02,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084782788] [2023-08-30 05:58:02,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:02,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:02,646 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 05:58:02,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:02,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084782788] [2023-08-30 05:58:02,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084782788] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:02,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:02,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:58:02,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973558148] [2023-08-30 05:58:02,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:02,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:58:02,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:02,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:58:02,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:58:02,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 306 [2023-08-30 05:58:02,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 05:58:02,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:02,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 306 [2023-08-30 05:58:02,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:03,080 INFO L130 PetriNetUnfolder]: 3648/5417 cut-off events. [2023-08-30 05:58:03,081 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-30 05:58:03,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10589 conditions, 5417 events. 3648/5417 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 30580 event pairs, 3648 based on Foata normal form. 0/4756 useless extension candidates. Maximal degree in co-relation 10585. Up to 5079 conditions per place. [2023-08-30 05:58:03,118 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 32 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-30 05:58:03,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 38 transitions, 155 flow [2023-08-30 05:58:03,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:58:03,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:58:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-08-30 05:58:03,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596949891067538 [2023-08-30 05:58:03,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-08-30 05:58:03,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-08-30 05:58:03,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:03,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-08-30 05:58:03,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states 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 05:58:03,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 05:58:03,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 05:58:03,125 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 93 flow. Second operand 3 states and 422 transitions. [2023-08-30 05:58:03,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 38 transitions, 155 flow [2023-08-30 05:58:03,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 38 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:58:03,126 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 90 flow [2023-08-30 05:58:03,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2023-08-30 05:58:03,127 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -14 predicate places. [2023-08-30 05:58:03,127 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 90 flow [2023-08-30 05:58:03,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 05:58:03,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:03,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:58:03,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 05:58:03,128 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:03,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:03,129 INFO L85 PathProgramCache]: Analyzing trace with hash -557973211, now seen corresponding path program 1 times [2023-08-30 05:58:03,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:03,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777573839] [2023-08-30 05:58:03,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:03,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:03,192 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 05:58:03,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:03,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777573839] [2023-08-30 05:58:03,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777573839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:03,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:03,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:58:03,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509226683] [2023-08-30 05:58:03,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:03,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:58:03,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:03,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:58:03,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:58:03,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 306 [2023-08-30 05:58:03,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states 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 05:58:03,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:03,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 306 [2023-08-30 05:58:03,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:03,589 INFO L130 PetriNetUnfolder]: 3501/5186 cut-off events. [2023-08-30 05:58:03,590 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-30 05:58:03,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10144 conditions, 5186 events. 3501/5186 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 28972 event pairs, 3501 based on Foata normal form. 0/4597 useless extension candidates. Maximal degree in co-relation 10140. Up to 4864 conditions per place. [2023-08-30 05:58:03,613 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 30 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-08-30 05:58:03,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 36 transitions, 148 flow [2023-08-30 05:58:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:58:03,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:58:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-08-30 05:58:03,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477124183006536 [2023-08-30 05:58:03,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-08-30 05:58:03,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-08-30 05:58:03,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:03,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-08-30 05:58:03,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:58:03,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 05:58:03,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 05:58:03,619 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 90 flow. Second operand 3 states and 438 transitions. [2023-08-30 05:58:03,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 36 transitions, 148 flow [2023-08-30 05:58:03,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 36 transitions, 147 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:58:03,621 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 87 flow [2023-08-30 05:58:03,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2023-08-30 05:58:03,622 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-08-30 05:58:03,622 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 87 flow [2023-08-30 05:58:03,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states 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 05:58:03,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:03,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:58:03,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 05:58:03,623 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:03,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:03,623 INFO L85 PathProgramCache]: Analyzing trace with hash 658670065, now seen corresponding path program 1 times [2023-08-30 05:58:03,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:03,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112409327] [2023-08-30 05:58:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:03,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:03,786 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 05:58:03,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:03,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112409327] [2023-08-30 05:58:03,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112409327] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:03,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:03,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:58:03,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577052212] [2023-08-30 05:58:03,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:03,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:58:03,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:03,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:58:03,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:58:03,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 306 [2023-08-30 05:58:03,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 87 flow. Second operand has 6 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 0 states have call successors, (0), 0 states 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 05:58:03,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:03,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 306 [2023-08-30 05:58:03,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:04,162 INFO L130 PetriNetUnfolder]: 2733/4098 cut-off events. [2023-08-30 05:58:04,162 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-30 05:58:04,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8033 conditions, 4098 events. 2733/4098 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 22379 event pairs, 2733 based on Foata normal form. 0/3781 useless extension candidates. Maximal degree in co-relation 8029. Up to 3840 conditions per place. [2023-08-30 05:58:04,183 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 29 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-08-30 05:58:04,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 35 transitions, 145 flow [2023-08-30 05:58:04,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:58:04,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:58:04,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2023-08-30 05:58:04,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41612200435729846 [2023-08-30 05:58:04,186 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2023-08-30 05:58:04,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2023-08-30 05:58:04,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:04,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2023-08-30 05:58:04,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 05:58:04,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 05:58:04,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 05:58:04,189 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 87 flow. Second operand 3 states and 382 transitions. [2023-08-30 05:58:04,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 35 transitions, 145 flow [2023-08-30 05:58:04,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:58:04,191 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 86 flow [2023-08-30 05:58:04,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-08-30 05:58:04,193 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-08-30 05:58:04,193 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 86 flow [2023-08-30 05:58:04,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 0 states have call successors, (0), 0 states 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 05:58:04,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:04,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:58:04,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 05:58:04,194 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:04,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:04,194 INFO L85 PathProgramCache]: Analyzing trace with hash 658670063, now seen corresponding path program 1 times [2023-08-30 05:58:04,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:04,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460306146] [2023-08-30 05:58:04,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:04,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:04,236 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 05:58:04,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:04,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460306146] [2023-08-30 05:58:04,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460306146] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:04,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:04,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:58:04,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560743042] [2023-08-30 05:58:04,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:04,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:58:04,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:04,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:58:04,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:58:04,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 306 [2023-08-30 05:58:04,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 05:58:04,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:04,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 306 [2023-08-30 05:58:04,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:04,490 INFO L130 PetriNetUnfolder]: 1965/3010 cut-off events. [2023-08-30 05:58:04,490 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-30 05:58:04,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5922 conditions, 3010 events. 1965/3010 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15801 event pairs, 1965 based on Foata normal form. 0/2965 useless extension candidates. Maximal degree in co-relation 5918. Up to 2816 conditions per place. [2023-08-30 05:58:04,506 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 28 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-08-30 05:58:04,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 34 transitions, 142 flow [2023-08-30 05:58:04,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:58:04,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:58:04,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-08-30 05:58:04,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45751633986928103 [2023-08-30 05:58:04,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-08-30 05:58:04,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-08-30 05:58:04,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:04,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-08-30 05:58:04,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states 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 05:58:04,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 05:58:04,512 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 05:58:04,512 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 86 flow. Second operand 3 states and 420 transitions. [2023-08-30 05:58:04,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 34 transitions, 142 flow [2023-08-30 05:58:04,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 34 transitions, 141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:58:04,513 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 85 flow [2023-08-30 05:58:04,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2023-08-30 05:58:04,515 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-08-30 05:58:04,515 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 85 flow [2023-08-30 05:58:04,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 05:58:04,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:04,516 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] [2023-08-30 05:58:04,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 05:58:04,516 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:04,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:04,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1476785543, now seen corresponding path program 1 times [2023-08-30 05:58:04,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:04,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705603637] [2023-08-30 05:58:04,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:04,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:05,532 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 05:58:05,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:05,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705603637] [2023-08-30 05:58:05,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705603637] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:05,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:05,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:58:05,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926776289] [2023-08-30 05:58:05,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:05,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:58:05,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:05,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:58:05,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:58:05,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 306 [2023-08-30 05:58:05,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 85 flow. Second operand has 7 states, 7 states have (on average 129.85714285714286) internal successors, (909), 7 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 05:58:05,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:05,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 306 [2023-08-30 05:58:05,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:06,604 INFO L130 PetriNetUnfolder]: 10161/14324 cut-off events. [2023-08-30 05:58:06,605 INFO L131 PetriNetUnfolder]: For 228/228 co-relation queries the response was YES. [2023-08-30 05:58:06,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28965 conditions, 14324 events. 10161/14324 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 75194 event pairs, 2626 based on Foata normal form. 2/14326 useless extension candidates. Maximal degree in co-relation 28961. Up to 4603 conditions per place. [2023-08-30 05:58:06,689 INFO L137 encePairwiseOnDemand]: 294/306 looper letters, 113 selfloop transitions, 18 changer transitions 20/151 dead transitions. [2023-08-30 05:58:06,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 151 transitions, 643 flow [2023-08-30 05:58:06,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:58:06,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:58:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1153 transitions. [2023-08-30 05:58:06,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4709967320261438 [2023-08-30 05:58:06,693 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1153 transitions. [2023-08-30 05:58:06,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1153 transitions. [2023-08-30 05:58:06,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:06,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1153 transitions. [2023-08-30 05:58:06,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 144.125) internal successors, (1153), 8 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states 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 05:58:06,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states 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 05:58:06,699 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states 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 05:58:06,700 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 85 flow. Second operand 8 states and 1153 transitions. [2023-08-30 05:58:06,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 151 transitions, 643 flow [2023-08-30 05:58:06,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 151 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:58:06,702 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 220 flow [2023-08-30 05:58:06,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=220, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-08-30 05:58:06,703 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -3 predicate places. [2023-08-30 05:58:06,703 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 220 flow [2023-08-30 05:58:06,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.85714285714286) internal successors, (909), 7 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 05:58:06,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:06,704 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] [2023-08-30 05:58:06,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 05:58:06,704 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:06,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:06,705 INFO L85 PathProgramCache]: Analyzing trace with hash 53361737, now seen corresponding path program 2 times [2023-08-30 05:58:06,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:06,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101100526] [2023-08-30 05:58:06,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:06,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:06,941 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 05:58:06,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:06,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101100526] [2023-08-30 05:58:06,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101100526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:06,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:06,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:58:06,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989161875] [2023-08-30 05:58:06,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:06,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:58:06,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:06,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:58:06,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:58:06,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 05:58:06,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 0 states 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 05:58:06,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:06,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 05:58:06,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:07,534 INFO L130 PetriNetUnfolder]: 3556/5557 cut-off events. [2023-08-30 05:58:07,535 INFO L131 PetriNetUnfolder]: For 3407/3611 co-relation queries the response was YES. [2023-08-30 05:58:07,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14261 conditions, 5557 events. 3556/5557 cut-off events. For 3407/3611 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 32153 event pairs, 546 based on Foata normal form. 192/5557 useless extension candidates. Maximal degree in co-relation 14251. Up to 3451 conditions per place. [2023-08-30 05:58:07,568 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 79 selfloop transitions, 20 changer transitions 0/114 dead transitions. [2023-08-30 05:58:07,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 114 transitions, 600 flow [2023-08-30 05:58:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:58:07,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:58:07,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1029 transitions. [2023-08-30 05:58:07,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803921568627451 [2023-08-30 05:58:07,572 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1029 transitions. [2023-08-30 05:58:07,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1029 transitions. [2023-08-30 05:58:07,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:07,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1029 transitions. [2023-08-30 05:58:07,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states 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 05:58:07,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states 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 05:58:07,578 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states 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 05:58:07,578 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 220 flow. Second operand 7 states and 1029 transitions. [2023-08-30 05:58:07,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 114 transitions, 600 flow [2023-08-30 05:58:07,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 114 transitions, 585 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 05:58:07,596 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 311 flow [2023-08-30 05:58:07,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=311, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2023-08-30 05:58:07,597 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2023-08-30 05:58:07,597 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 311 flow [2023-08-30 05:58:07,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 0 states 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 05:58:07,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:07,599 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] [2023-08-30 05:58:07,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 05:58:07,599 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:07,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:07,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1215593255, now seen corresponding path program 3 times [2023-08-30 05:58:07,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:07,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090449292] [2023-08-30 05:58:07,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:07,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:07,858 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 05:58:07,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:07,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090449292] [2023-08-30 05:58:07,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090449292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:07,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:07,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:58:07,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332190988] [2023-08-30 05:58:07,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:07,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:58:07,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:07,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:58:07,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:58:07,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:07,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 05:58:07,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:07,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:07,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:08,429 INFO L130 PetriNetUnfolder]: 2780/4517 cut-off events. [2023-08-30 05:58:08,430 INFO L131 PetriNetUnfolder]: For 4413/4735 co-relation queries the response was YES. [2023-08-30 05:58:08,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13718 conditions, 4517 events. 2780/4517 cut-off events. For 4413/4735 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 26379 event pairs, 532 based on Foata normal form. 268/4661 useless extension candidates. Maximal degree in co-relation 13706. Up to 2821 conditions per place. [2023-08-30 05:58:08,467 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 75 selfloop transitions, 27 changer transitions 0/117 dead transitions. [2023-08-30 05:58:08,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 117 transitions, 701 flow [2023-08-30 05:58:08,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:58:08,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:58:08,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1016 transitions. [2023-08-30 05:58:08,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47432306255835666 [2023-08-30 05:58:08,472 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1016 transitions. [2023-08-30 05:58:08,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1016 transitions. [2023-08-30 05:58:08,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:08,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1016 transitions. [2023-08-30 05:58:08,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 145.14285714285714) internal successors, (1016), 7 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states 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 05:58:08,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states 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 05:58:08,479 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states 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 05:58:08,479 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 311 flow. Second operand 7 states and 1016 transitions. [2023-08-30 05:58:08,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 117 transitions, 701 flow [2023-08-30 05:58:08,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 117 transitions, 696 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:58:08,488 INFO L231 Difference]: Finished difference. Result has 75 places, 74 transitions, 419 flow [2023-08-30 05:58:08,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=419, PETRI_PLACES=75, PETRI_TRANSITIONS=74} [2023-08-30 05:58:08,489 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2023-08-30 05:58:08,489 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 74 transitions, 419 flow [2023-08-30 05:58:08,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 05:58:08,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:08,490 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] [2023-08-30 05:58:08,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 05:58:08,491 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:08,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:08,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1297582879, now seen corresponding path program 4 times [2023-08-30 05:58:08,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:08,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567849061] [2023-08-30 05:58:08,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:08,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:08,748 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 05:58:08,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:08,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567849061] [2023-08-30 05:58:08,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567849061] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:08,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:08,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 05:58:08,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241398151] [2023-08-30 05:58:08,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:08,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:58:08,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:08,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:58:08,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:58:08,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 05:58:08,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 419 flow. Second operand has 7 states, 7 states have (on average 137.14285714285714) internal successors, (960), 7 states have internal predecessors, (960), 0 states have call successors, (0), 0 states 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 05:58:08,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:08,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 05:58:08,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:09,403 INFO L130 PetriNetUnfolder]: 2900/4763 cut-off events. [2023-08-30 05:58:09,404 INFO L131 PetriNetUnfolder]: For 6864/7276 co-relation queries the response was YES. [2023-08-30 05:58:09,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15816 conditions, 4763 events. 2900/4763 cut-off events. For 6864/7276 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 28754 event pairs, 690 based on Foata normal form. 192/4813 useless extension candidates. Maximal degree in co-relation 15801. Up to 2800 conditions per place. [2023-08-30 05:58:09,447 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 76 selfloop transitions, 41 changer transitions 11/143 dead transitions. [2023-08-30 05:58:09,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 143 transitions, 978 flow [2023-08-30 05:58:09,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:58:09,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:58:09,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1306 transitions. [2023-08-30 05:58:09,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47421931735657225 [2023-08-30 05:58:09,452 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1306 transitions. [2023-08-30 05:58:09,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1306 transitions. [2023-08-30 05:58:09,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:09,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1306 transitions. [2023-08-30 05:58:09,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.11111111111111) internal successors, (1306), 9 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states 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 05:58:09,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 05:58:09,461 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 05:58:09,461 INFO L175 Difference]: Start difference. First operand has 75 places, 74 transitions, 419 flow. Second operand 9 states and 1306 transitions. [2023-08-30 05:58:09,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 143 transitions, 978 flow [2023-08-30 05:58:09,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 143 transitions, 973 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:58:09,474 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 635 flow [2023-08-30 05:58:09,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=635, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2023-08-30 05:58:09,475 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 22 predicate places. [2023-08-30 05:58:09,475 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 635 flow [2023-08-30 05:58:09,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 137.14285714285714) internal successors, (960), 7 states have internal predecessors, (960), 0 states have call successors, (0), 0 states 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 05:58:09,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:09,476 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] [2023-08-30 05:58:09,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 05:58:09,476 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:09,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:09,477 INFO L85 PathProgramCache]: Analyzing trace with hash -474786319, now seen corresponding path program 5 times [2023-08-30 05:58:09,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:09,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176426290] [2023-08-30 05:58:09,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:09,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:09,690 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 05:58:09,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:09,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176426290] [2023-08-30 05:58:09,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176426290] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:09,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:09,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:58:09,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726023300] [2023-08-30 05:58:09,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:09,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:58:09,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:09,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:58:09,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:58:09,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:09,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 635 flow. Second operand has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 05:58:09,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:09,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:09,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:10,164 INFO L130 PetriNetUnfolder]: 2260/3801 cut-off events. [2023-08-30 05:58:10,164 INFO L131 PetriNetUnfolder]: For 7055/7427 co-relation queries the response was YES. [2023-08-30 05:58:10,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13495 conditions, 3801 events. 2260/3801 cut-off events. For 7055/7427 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 22294 event pairs, 685 based on Foata normal form. 194/3885 useless extension candidates. Maximal degree in co-relation 13475. Up to 2444 conditions per place. [2023-08-30 05:58:10,230 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 57 selfloop transitions, 35 changer transitions 14/121 dead transitions. [2023-08-30 05:58:10,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 121 transitions, 968 flow [2023-08-30 05:58:10,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:58:10,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:58:10,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1004 transitions. [2023-08-30 05:58:10,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46872082166199813 [2023-08-30 05:58:10,234 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1004 transitions. [2023-08-30 05:58:10,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1004 transitions. [2023-08-30 05:58:10,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:10,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1004 transitions. [2023-08-30 05:58:10,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.42857142857142) internal successors, (1004), 7 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states 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 05:58:10,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states 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 05:58:10,241 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states 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 05:58:10,241 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 635 flow. Second operand 7 states and 1004 transitions. [2023-08-30 05:58:10,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 121 transitions, 968 flow [2023-08-30 05:58:10,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 121 transitions, 949 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-30 05:58:10,256 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 662 flow [2023-08-30 05:58:10,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=662, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2023-08-30 05:58:10,257 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 27 predicate places. [2023-08-30 05:58:10,257 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 662 flow [2023-08-30 05:58:10,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 05:58:10,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:10,258 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] [2023-08-30 05:58:10,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 05:58:10,258 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:10,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:10,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1164946831, now seen corresponding path program 6 times [2023-08-30 05:58:10,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:10,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034343817] [2023-08-30 05:58:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:10,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:10,502 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 05:58:10,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:10,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034343817] [2023-08-30 05:58:10,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034343817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:10,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:10,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:58:10,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680783937] [2023-08-30 05:58:10,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:10,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:58:10,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:10,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:58:10,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:58:10,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 05:58:10,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 662 flow. Second operand has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 0 states 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 05:58:10,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:10,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 05:58:10,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:10,818 INFO L130 PetriNetUnfolder]: 1199/2126 cut-off events. [2023-08-30 05:58:10,819 INFO L131 PetriNetUnfolder]: For 4207/4409 co-relation queries the response was YES. [2023-08-30 05:58:10,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7590 conditions, 2126 events. 1199/2126 cut-off events. For 4207/4409 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11507 event pairs, 390 based on Foata normal form. 168/2224 useless extension candidates. Maximal degree in co-relation 7568. Up to 1402 conditions per place. [2023-08-30 05:58:10,836 INFO L137 encePairwiseOnDemand]: 297/306 looper letters, 70 selfloop transitions, 38 changer transitions 0/119 dead transitions. [2023-08-30 05:58:10,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 119 transitions, 1052 flow [2023-08-30 05:58:10,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:58:10,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:58:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1010 transitions. [2023-08-30 05:58:10,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715219421101774 [2023-08-30 05:58:10,840 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1010 transitions. [2023-08-30 05:58:10,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1010 transitions. [2023-08-30 05:58:10,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:10,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1010 transitions. [2023-08-30 05:58:10,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states 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 05:58:10,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states 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 05:58:10,846 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states 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 05:58:10,846 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 662 flow. Second operand 7 states and 1010 transitions. [2023-08-30 05:58:10,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 119 transitions, 1052 flow [2023-08-30 05:58:10,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 119 transitions, 971 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-08-30 05:58:10,857 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 703 flow [2023-08-30 05:58:10,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=703, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2023-08-30 05:58:10,858 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 17 predicate places. [2023-08-30 05:58:10,858 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 703 flow [2023-08-30 05:58:10,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 0 states 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 05:58:10,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:10,859 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] [2023-08-30 05:58:10,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 05:58:10,859 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:10,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:10,860 INFO L85 PathProgramCache]: Analyzing trace with hash -140225591, now seen corresponding path program 7 times [2023-08-30 05:58:10,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:10,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413284294] [2023-08-30 05:58:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:10,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:11,093 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 05:58:11,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:11,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413284294] [2023-08-30 05:58:11,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413284294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:11,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:11,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 05:58:11,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659374737] [2023-08-30 05:58:11,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:11,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:58:11,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:11,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:58:11,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:58:11,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:11,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 703 flow. Second operand has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states 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 05:58:11,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:11,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:11,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:11,688 INFO L130 PetriNetUnfolder]: 2620/4741 cut-off events. [2023-08-30 05:58:11,689 INFO L131 PetriNetUnfolder]: For 7240/7668 co-relation queries the response was YES. [2023-08-30 05:58:11,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14989 conditions, 4741 events. 2620/4741 cut-off events. For 7240/7668 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 31924 event pairs, 441 based on Foata normal form. 150/4727 useless extension candidates. Maximal degree in co-relation 14971. Up to 1748 conditions per place. [2023-08-30 05:58:11,724 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 100 selfloop transitions, 59 changer transitions 0/170 dead transitions. [2023-08-30 05:58:11,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 170 transitions, 1377 flow [2023-08-30 05:58:11,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:58:11,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:58:11,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1311 transitions. [2023-08-30 05:58:11,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4760348583877996 [2023-08-30 05:58:11,728 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1311 transitions. [2023-08-30 05:58:11,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1311 transitions. [2023-08-30 05:58:11,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:11,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1311 transitions. [2023-08-30 05:58:11,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.66666666666666) internal successors, (1311), 9 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states 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 05:58:11,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 05:58:11,749 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 05:58:11,749 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 703 flow. Second operand 9 states and 1311 transitions. [2023-08-30 05:58:11,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 170 transitions, 1377 flow [2023-08-30 05:58:11,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 170 transitions, 1365 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 05:58:11,762 INFO L231 Difference]: Finished difference. Result has 90 places, 102 transitions, 993 flow [2023-08-30 05:58:11,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=993, PETRI_PLACES=90, PETRI_TRANSITIONS=102} [2023-08-30 05:58:11,763 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 26 predicate places. [2023-08-30 05:58:11,763 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 102 transitions, 993 flow [2023-08-30 05:58:11,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states 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 05:58:11,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:11,764 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] [2023-08-30 05:58:11,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 05:58:11,764 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:11,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:11,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1222155345, now seen corresponding path program 8 times [2023-08-30 05:58:11,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:11,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805184052] [2023-08-30 05:58:11,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:11,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:11,985 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 05:58:11,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:11,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805184052] [2023-08-30 05:58:11,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805184052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:11,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:11,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 05:58:11,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762034840] [2023-08-30 05:58:11,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:11,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:58:11,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:11,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:58:11,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:58:12,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:12,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 102 transitions, 993 flow. Second operand has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states 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 05:58:12,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:12,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:12,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:12,605 INFO L130 PetriNetUnfolder]: 2600/4767 cut-off events. [2023-08-30 05:58:12,605 INFO L131 PetriNetUnfolder]: For 12049/12825 co-relation queries the response was YES. [2023-08-30 05:58:12,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17632 conditions, 4767 events. 2600/4767 cut-off events. For 12049/12825 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 32597 event pairs, 423 based on Foata normal form. 352/4943 useless extension candidates. Maximal degree in co-relation 17611. Up to 1744 conditions per place. [2023-08-30 05:58:12,639 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 93 selfloop transitions, 61 changer transitions 4/169 dead transitions. [2023-08-30 05:58:12,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 169 transitions, 1592 flow [2023-08-30 05:58:12,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:58:12,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:58:12,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1307 transitions. [2023-08-30 05:58:12,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745824255628177 [2023-08-30 05:58:12,644 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1307 transitions. [2023-08-30 05:58:12,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1307 transitions. [2023-08-30 05:58:12,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:12,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1307 transitions. [2023-08-30 05:58:12,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.22222222222223) internal successors, (1307), 9 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states 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 05:58:12,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 05:58:12,651 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 05:58:12,652 INFO L175 Difference]: Start difference. First operand has 90 places, 102 transitions, 993 flow. Second operand 9 states and 1307 transitions. [2023-08-30 05:58:12,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 169 transitions, 1592 flow [2023-08-30 05:58:12,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 169 transitions, 1576 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 05:58:12,674 INFO L231 Difference]: Finished difference. Result has 99 places, 106 transitions, 1164 flow [2023-08-30 05:58:12,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1164, PETRI_PLACES=99, PETRI_TRANSITIONS=106} [2023-08-30 05:58:12,675 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 35 predicate places. [2023-08-30 05:58:12,675 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 106 transitions, 1164 flow [2023-08-30 05:58:12,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states 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 05:58:12,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:12,676 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] [2023-08-30 05:58:12,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 05:58:12,676 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:12,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:12,677 INFO L85 PathProgramCache]: Analyzing trace with hash -2122783463, now seen corresponding path program 9 times [2023-08-30 05:58:12,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:12,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45158974] [2023-08-30 05:58:12,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:12,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:12,906 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 05:58:12,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:12,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45158974] [2023-08-30 05:58:12,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45158974] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:12,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:12,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:58:12,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46467951] [2023-08-30 05:58:12,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:12,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:58:12,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:12,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:58:12,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:58:12,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:12,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 106 transitions, 1164 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:12,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:12,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:12,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:13,667 INFO L130 PetriNetUnfolder]: 2691/5022 cut-off events. [2023-08-30 05:58:13,668 INFO L131 PetriNetUnfolder]: For 16860/17682 co-relation queries the response was YES. [2023-08-30 05:58:13,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19983 conditions, 5022 events. 2691/5022 cut-off events. For 16860/17682 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 35599 event pairs, 437 based on Foata normal form. 388/5218 useless extension candidates. Maximal degree in co-relation 19959. Up to 1753 conditions per place. [2023-08-30 05:58:13,715 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 115 selfloop transitions, 76 changer transitions 4/206 dead transitions. [2023-08-30 05:58:13,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 206 transitions, 2118 flow [2023-08-30 05:58:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 05:58:13,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 05:58:13,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1735 transitions. [2023-08-30 05:58:13,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4724945533769063 [2023-08-30 05:58:13,724 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1735 transitions. [2023-08-30 05:58:13,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1735 transitions. [2023-08-30 05:58:13,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:13,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1735 transitions. [2023-08-30 05:58:13,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.58333333333334) internal successors, (1735), 12 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states 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 05:58:13,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states 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 05:58:13,735 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states 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 05:58:13,736 INFO L175 Difference]: Start difference. First operand has 99 places, 106 transitions, 1164 flow. Second operand 12 states and 1735 transitions. [2023-08-30 05:58:13,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 206 transitions, 2118 flow [2023-08-30 05:58:13,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 206 transitions, 2029 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 05:58:13,771 INFO L231 Difference]: Finished difference. Result has 108 places, 121 transitions, 1453 flow [2023-08-30 05:58:13,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1453, PETRI_PLACES=108, PETRI_TRANSITIONS=121} [2023-08-30 05:58:13,772 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 44 predicate places. [2023-08-30 05:58:13,772 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 121 transitions, 1453 flow [2023-08-30 05:58:13,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:13,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:13,773 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] [2023-08-30 05:58:13,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 05:58:13,773 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:13,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:13,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1246124463, now seen corresponding path program 10 times [2023-08-30 05:58:13,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:13,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392880795] [2023-08-30 05:58:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:13,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:13,973 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 05:58:13,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:13,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392880795] [2023-08-30 05:58:13,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392880795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:13,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:13,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:58:13,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077076183] [2023-08-30 05:58:13,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:13,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:58:13,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:13,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:58:13,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:58:14,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:14,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 121 transitions, 1453 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:14,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:14,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:14,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:14,724 INFO L130 PetriNetUnfolder]: 2624/4929 cut-off events. [2023-08-30 05:58:14,724 INFO L131 PetriNetUnfolder]: For 20012/20864 co-relation queries the response was YES. [2023-08-30 05:58:14,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20473 conditions, 4929 events. 2624/4929 cut-off events. For 20012/20864 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 35029 event pairs, 499 based on Foata normal form. 318/5053 useless extension candidates. Maximal degree in co-relation 20447. Up to 1732 conditions per place. [2023-08-30 05:58:14,767 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 107 selfloop transitions, 84 changer transitions 8/210 dead transitions. [2023-08-30 05:58:14,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 210 transitions, 2331 flow [2023-08-30 05:58:14,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 05:58:14,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 05:58:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1729 transitions. [2023-08-30 05:58:14,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47086056644880175 [2023-08-30 05:58:14,771 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1729 transitions. [2023-08-30 05:58:14,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1729 transitions. [2023-08-30 05:58:14,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:14,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1729 transitions. [2023-08-30 05:58:14,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.08333333333334) internal successors, (1729), 12 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states 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 05:58:14,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states 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 05:58:14,779 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states 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 05:58:14,779 INFO L175 Difference]: Start difference. First operand has 108 places, 121 transitions, 1453 flow. Second operand 12 states and 1729 transitions. [2023-08-30 05:58:14,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 210 transitions, 2331 flow [2023-08-30 05:58:14,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 210 transitions, 2200 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-30 05:58:14,816 INFO L231 Difference]: Finished difference. Result has 115 places, 129 transitions, 1592 flow [2023-08-30 05:58:14,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1592, PETRI_PLACES=115, PETRI_TRANSITIONS=129} [2023-08-30 05:58:14,816 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 51 predicate places. [2023-08-30 05:58:14,816 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 129 transitions, 1592 flow [2023-08-30 05:58:14,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:14,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:14,817 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] [2023-08-30 05:58:14,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 05:58:14,817 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:14,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:14,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1899180883, now seen corresponding path program 11 times [2023-08-30 05:58:14,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:14,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093363701] [2023-08-30 05:58:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:14,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:15,034 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 05:58:15,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:15,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093363701] [2023-08-30 05:58:15,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093363701] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:15,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:15,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:58:15,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917635817] [2023-08-30 05:58:15,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:15,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:58:15,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:15,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:58:15,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:58:15,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:15,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 129 transitions, 1592 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:15,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:15,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:15,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:15,753 INFO L130 PetriNetUnfolder]: 2060/3931 cut-off events. [2023-08-30 05:58:15,753 INFO L131 PetriNetUnfolder]: For 19824/20592 co-relation queries the response was YES. [2023-08-30 05:58:15,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17156 conditions, 3931 events. 2060/3931 cut-off events. For 19824/20592 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 27137 event pairs, 470 based on Foata normal form. 422/4251 useless extension candidates. Maximal degree in co-relation 17128. Up to 1546 conditions per place. [2023-08-30 05:58:15,782 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 103 selfloop transitions, 100 changer transitions 19/233 dead transitions. [2023-08-30 05:58:15,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 233 transitions, 2850 flow [2023-08-30 05:58:15,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 05:58:15,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 05:58:15,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1590 transitions. [2023-08-30 05:58:15,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47237076648841353 [2023-08-30 05:58:15,785 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1590 transitions. [2023-08-30 05:58:15,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1590 transitions. [2023-08-30 05:58:15,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:15,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1590 transitions. [2023-08-30 05:58:15,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 144.54545454545453) internal successors, (1590), 11 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states 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 05:58:15,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states 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 05:58:15,795 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states 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 05:58:15,795 INFO L175 Difference]: Start difference. First operand has 115 places, 129 transitions, 1592 flow. Second operand 11 states and 1590 transitions. [2023-08-30 05:58:15,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 233 transitions, 2850 flow [2023-08-30 05:58:15,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 233 transitions, 2783 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-30 05:58:15,829 INFO L231 Difference]: Finished difference. Result has 122 places, 146 transitions, 2052 flow [2023-08-30 05:58:15,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2052, PETRI_PLACES=122, PETRI_TRANSITIONS=146} [2023-08-30 05:58:15,829 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 58 predicate places. [2023-08-30 05:58:15,830 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 146 transitions, 2052 flow [2023-08-30 05:58:15,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:15,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:15,830 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] [2023-08-30 05:58:15,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 05:58:15,831 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:15,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:15,831 INFO L85 PathProgramCache]: Analyzing trace with hash -381515783, now seen corresponding path program 12 times [2023-08-30 05:58:15,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:15,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814767251] [2023-08-30 05:58:15,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:15,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:58:16,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:16,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814767251] [2023-08-30 05:58:16,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814767251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:16,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:16,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:58:16,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821945081] [2023-08-30 05:58:16,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:16,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:58:16,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:16,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:58:16,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:58:16,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:16,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 146 transitions, 2052 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:16,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:16,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:16,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:16,794 INFO L130 PetriNetUnfolder]: 2353/4608 cut-off events. [2023-08-30 05:58:16,794 INFO L131 PetriNetUnfolder]: For 27066/27828 co-relation queries the response was YES. [2023-08-30 05:58:16,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20783 conditions, 4608 events. 2353/4608 cut-off events. For 27066/27828 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 33383 event pairs, 190 based on Foata normal form. 210/4704 useless extension candidates. Maximal degree in co-relation 20751. Up to 1404 conditions per place. [2023-08-30 05:58:16,835 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 105 selfloop transitions, 125 changer transitions 2/243 dead transitions. [2023-08-30 05:58:16,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 243 transitions, 3012 flow [2023-08-30 05:58:16,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 05:58:16,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 05:58:16,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1456 transitions. [2023-08-30 05:58:16,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47581699346405226 [2023-08-30 05:58:16,839 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1456 transitions. [2023-08-30 05:58:16,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1456 transitions. [2023-08-30 05:58:16,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:16,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1456 transitions. [2023-08-30 05:58:16,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 145.6) internal successors, (1456), 10 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 05:58:16,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states 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 05:58:16,847 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states 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 05:58:16,847 INFO L175 Difference]: Start difference. First operand has 122 places, 146 transitions, 2052 flow. Second operand 10 states and 1456 transitions. [2023-08-30 05:58:16,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 243 transitions, 3012 flow [2023-08-30 05:58:16,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 243 transitions, 2937 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-08-30 05:58:16,908 INFO L231 Difference]: Finished difference. Result has 128 places, 170 transitions, 2590 flow [2023-08-30 05:58:16,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2590, PETRI_PLACES=128, PETRI_TRANSITIONS=170} [2023-08-30 05:58:16,909 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 64 predicate places. [2023-08-30 05:58:16,909 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 170 transitions, 2590 flow [2023-08-30 05:58:16,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:16,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:16,910 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] [2023-08-30 05:58:16,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 05:58:16,910 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:16,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:16,910 INFO L85 PathProgramCache]: Analyzing trace with hash 389047513, now seen corresponding path program 13 times [2023-08-30 05:58:16,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:16,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466261402] [2023-08-30 05:58:16,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:16,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:58:17,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:17,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466261402] [2023-08-30 05:58:17,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466261402] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:17,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:17,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:58:17,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256559132] [2023-08-30 05:58:17,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:17,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:58:17,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:17,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:58:17,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:58:17,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:17,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 170 transitions, 2590 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:17,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:17,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:17,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:18,042 INFO L130 PetriNetUnfolder]: 2428/4805 cut-off events. [2023-08-30 05:58:18,043 INFO L131 PetriNetUnfolder]: For 38626/39658 co-relation queries the response was YES. [2023-08-30 05:58:18,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24137 conditions, 4805 events. 2428/4805 cut-off events. For 38626/39658 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 35238 event pairs, 408 based on Foata normal form. 210/4901 useless extension candidates. Maximal degree in co-relation 24103. Up to 1945 conditions per place. [2023-08-30 05:58:18,070 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 120 selfloop transitions, 141 changer transitions 2/274 dead transitions. [2023-08-30 05:58:18,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 274 transitions, 3937 flow [2023-08-30 05:58:18,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 05:58:18,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 05:58:18,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1859 transitions. [2023-08-30 05:58:18,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673202614379085 [2023-08-30 05:58:18,075 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1859 transitions. [2023-08-30 05:58:18,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1859 transitions. [2023-08-30 05:58:18,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:18,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1859 transitions. [2023-08-30 05:58:18,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 143.0) internal successors, (1859), 13 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states 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 05:58:18,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states 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 05:58:18,083 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states 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 05:58:18,083 INFO L175 Difference]: Start difference. First operand has 128 places, 170 transitions, 2590 flow. Second operand 13 states and 1859 transitions. [2023-08-30 05:58:18,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 274 transitions, 3937 flow [2023-08-30 05:58:18,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 274 transitions, 3782 flow, removed 55 selfloop flow, removed 5 redundant places. [2023-08-30 05:58:18,183 INFO L231 Difference]: Finished difference. Result has 139 places, 209 transitions, 3456 flow [2023-08-30 05:58:18,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=2487, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3456, PETRI_PLACES=139, PETRI_TRANSITIONS=209} [2023-08-30 05:58:18,184 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 75 predicate places. [2023-08-30 05:58:18,184 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 209 transitions, 3456 flow [2023-08-30 05:58:18,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:18,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:18,185 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] [2023-08-30 05:58:18,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 05:58:18,185 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:18,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:18,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1523814905, now seen corresponding path program 14 times [2023-08-30 05:58:18,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:18,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563336881] [2023-08-30 05:58:18,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:18,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:18,410 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 05:58:18,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:18,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563336881] [2023-08-30 05:58:18,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563336881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:18,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:18,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 05:58:18,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912397608] [2023-08-30 05:58:18,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:18,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 05:58:18,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:18,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 05:58:18,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-30 05:58:18,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:18,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 209 transitions, 3456 flow. Second operand has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states 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 05:58:18,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:18,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:18,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:19,352 INFO L130 PetriNetUnfolder]: 2397/4869 cut-off events. [2023-08-30 05:58:19,352 INFO L131 PetriNetUnfolder]: For 46258/47266 co-relation queries the response was YES. [2023-08-30 05:58:19,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25955 conditions, 4869 events. 2397/4869 cut-off events. For 46258/47266 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 36427 event pairs, 334 based on Foata normal form. 378/5181 useless extension candidates. Maximal degree in co-relation 25917. Up to 1365 conditions per place. [2023-08-30 05:58:19,408 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 143 selfloop transitions, 165 changer transitions 10/329 dead transitions. [2023-08-30 05:58:19,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 329 transitions, 5127 flow [2023-08-30 05:58:19,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 05:58:19,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 05:58:19,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1732 transitions. [2023-08-30 05:58:19,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47167755991285404 [2023-08-30 05:58:19,411 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1732 transitions. [2023-08-30 05:58:19,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1732 transitions. [2023-08-30 05:58:19,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:19,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1732 transitions. [2023-08-30 05:58:19,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.33333333333334) internal successors, (1732), 12 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states 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 05:58:19,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states 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 05:58:19,417 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states 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 05:58:19,418 INFO L175 Difference]: Start difference. First operand has 139 places, 209 transitions, 3456 flow. Second operand 12 states and 1732 transitions. [2023-08-30 05:58:19,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 329 transitions, 5127 flow [2023-08-30 05:58:19,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 329 transitions, 4978 flow, removed 35 selfloop flow, removed 4 redundant places. [2023-08-30 05:58:19,552 INFO L231 Difference]: Finished difference. Result has 148 places, 246 transitions, 4290 flow [2023-08-30 05:58:19,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=3335, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4290, PETRI_PLACES=148, PETRI_TRANSITIONS=246} [2023-08-30 05:58:19,553 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 84 predicate places. [2023-08-30 05:58:19,553 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 246 transitions, 4290 flow [2023-08-30 05:58:19,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states 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 05:58:19,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:19,554 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] [2023-08-30 05:58:19,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 05:58:19,554 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:19,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:19,554 INFO L85 PathProgramCache]: Analyzing trace with hash -983768009, now seen corresponding path program 15 times [2023-08-30 05:58:19,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:19,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057639498] [2023-08-30 05:58:19,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:19,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:19,759 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 05:58:19,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:19,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057639498] [2023-08-30 05:58:19,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057639498] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:19,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:19,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 05:58:19,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128032997] [2023-08-30 05:58:19,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:19,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 05:58:19,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:19,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 05:58:19,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 05:58:19,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:19,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 246 transitions, 4290 flow. Second operand has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states 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 05:58:19,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:19,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:19,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:20,887 INFO L130 PetriNetUnfolder]: 2324/4756 cut-off events. [2023-08-30 05:58:20,887 INFO L131 PetriNetUnfolder]: For 56915/57885 co-relation queries the response was YES. [2023-08-30 05:58:20,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27115 conditions, 4756 events. 2324/4756 cut-off events. For 56915/57885 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 35690 event pairs, 402 based on Foata normal form. 284/4962 useless extension candidates. Maximal degree in co-relation 27074. Up to 1916 conditions per place. [2023-08-30 05:58:20,921 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 148 selfloop transitions, 159 changer transitions 5/323 dead transitions. [2023-08-30 05:58:20,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 323 transitions, 5399 flow [2023-08-30 05:58:20,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 05:58:20,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 05:58:20,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2135 transitions. [2023-08-30 05:58:20,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4651416122004357 [2023-08-30 05:58:20,925 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2135 transitions. [2023-08-30 05:58:20,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2135 transitions. [2023-08-30 05:58:20,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:20,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2135 transitions. [2023-08-30 05:58:20,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 142.33333333333334) internal successors, (2135), 15 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states 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 05:58:20,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states 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 05:58:20,934 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states 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 05:58:20,934 INFO L175 Difference]: Start difference. First operand has 148 places, 246 transitions, 4290 flow. Second operand 15 states and 2135 transitions. [2023-08-30 05:58:20,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 323 transitions, 5399 flow [2023-08-30 05:58:21,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 323 transitions, 5146 flow, removed 58 selfloop flow, removed 9 redundant places. [2023-08-30 05:58:21,077 INFO L231 Difference]: Finished difference. Result has 154 places, 245 transitions, 4379 flow [2023-08-30 05:58:21,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4063, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4379, PETRI_PLACES=154, PETRI_TRANSITIONS=245} [2023-08-30 05:58:21,078 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 90 predicate places. [2023-08-30 05:58:21,078 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 245 transitions, 4379 flow [2023-08-30 05:58:21,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states 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 05:58:21,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:21,078 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] [2023-08-30 05:58:21,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 05:58:21,079 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:21,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:21,079 INFO L85 PathProgramCache]: Analyzing trace with hash -671271949, now seen corresponding path program 16 times [2023-08-30 05:58:21,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:21,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105176021] [2023-08-30 05:58:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:21,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:21,310 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 05:58:21,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:21,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105176021] [2023-08-30 05:58:21,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105176021] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:21,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:21,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 05:58:21,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317453609] [2023-08-30 05:58:21,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:21,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:58:21,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:21,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:58:21,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:58:21,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:21,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 245 transitions, 4379 flow. Second operand has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states 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 05:58:21,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:21,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:21,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:22,417 INFO L130 PetriNetUnfolder]: 2321/4773 cut-off events. [2023-08-30 05:58:22,417 INFO L131 PetriNetUnfolder]: For 59456/60452 co-relation queries the response was YES. [2023-08-30 05:58:22,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27534 conditions, 4773 events. 2321/4773 cut-off events. For 59456/60452 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 36002 event pairs, 410 based on Foata normal form. 284/4979 useless extension candidates. Maximal degree in co-relation 27493. Up to 1922 conditions per place. [2023-08-30 05:58:22,451 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 152 selfloop transitions, 162 changer transitions 14/339 dead transitions. [2023-08-30 05:58:22,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 339 transitions, 5698 flow [2023-08-30 05:58:22,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 05:58:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 05:58:22,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2681 transitions. [2023-08-30 05:58:22,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4611283109735122 [2023-08-30 05:58:22,453 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2681 transitions. [2023-08-30 05:58:22,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2681 transitions. [2023-08-30 05:58:22,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:22,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2681 transitions. [2023-08-30 05:58:22,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 141.10526315789474) internal successors, (2681), 19 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states 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 05:58:22,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states 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 05:58:22,462 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states 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 05:58:22,462 INFO L175 Difference]: Start difference. First operand has 154 places, 245 transitions, 4379 flow. Second operand 19 states and 2681 transitions. [2023-08-30 05:58:22,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 339 transitions, 5698 flow [2023-08-30 05:58:22,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 339 transitions, 5530 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-08-30 05:58:22,635 INFO L231 Difference]: Finished difference. Result has 164 places, 248 transitions, 4646 flow [2023-08-30 05:58:22,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4237, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4646, PETRI_PLACES=164, PETRI_TRANSITIONS=248} [2023-08-30 05:58:22,636 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 100 predicate places. [2023-08-30 05:58:22,636 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 248 transitions, 4646 flow [2023-08-30 05:58:22,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states 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 05:58:22,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:22,637 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] [2023-08-30 05:58:22,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 05:58:22,637 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:22,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:22,637 INFO L85 PathProgramCache]: Analyzing trace with hash -789055745, now seen corresponding path program 17 times [2023-08-30 05:58:22,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:22,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660499153] [2023-08-30 05:58:22,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:22,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:22,853 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 05:58:22,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:22,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660499153] [2023-08-30 05:58:22,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660499153] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:22,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:22,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 05:58:22,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749034079] [2023-08-30 05:58:22,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:22,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:58:22,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:22,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:58:22,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:58:22,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:22,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 248 transitions, 4646 flow. Second operand has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states 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 05:58:22,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:22,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:22,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:23,806 INFO L130 PetriNetUnfolder]: 2366/4883 cut-off events. [2023-08-30 05:58:23,807 INFO L131 PetriNetUnfolder]: For 67902/68978 co-relation queries the response was YES. [2023-08-30 05:58:23,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28870 conditions, 4883 events. 2366/4883 cut-off events. For 67902/68978 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 37403 event pairs, 410 based on Foata normal form. 374/5181 useless extension candidates. Maximal degree in co-relation 28829. Up to 1921 conditions per place. [2023-08-30 05:58:23,841 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 131 selfloop transitions, 135 changer transitions 76/353 dead transitions. [2023-08-30 05:58:23,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 353 transitions, 6339 flow [2023-08-30 05:58:23,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 05:58:23,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 05:58:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2414 transitions. [2023-08-30 05:58:23,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46405228758169936 [2023-08-30 05:58:23,844 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2414 transitions. [2023-08-30 05:58:23,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2414 transitions. [2023-08-30 05:58:23,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:23,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2414 transitions. [2023-08-30 05:58:23,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 142.0) internal successors, (2414), 17 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states 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 05:58:23,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 306.0) internal successors, (5508), 18 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states 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 05:58:23,852 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 306.0) internal successors, (5508), 18 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states 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 05:58:23,852 INFO L175 Difference]: Start difference. First operand has 164 places, 248 transitions, 4646 flow. Second operand 17 states and 2414 transitions. [2023-08-30 05:58:23,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 353 transitions, 6339 flow [2023-08-30 05:58:24,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 353 transitions, 5963 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-08-30 05:58:24,008 INFO L231 Difference]: Finished difference. Result has 166 places, 220 transitions, 3996 flow [2023-08-30 05:58:24,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4322, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3996, PETRI_PLACES=166, PETRI_TRANSITIONS=220} [2023-08-30 05:58:24,008 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 102 predicate places. [2023-08-30 05:58:24,009 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 220 transitions, 3996 flow [2023-08-30 05:58:24,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states 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 05:58:24,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:24,009 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] [2023-08-30 05:58:24,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 05:58:24,010 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:24,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:24,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1827200889, now seen corresponding path program 18 times [2023-08-30 05:58:24,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:24,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625916173] [2023-08-30 05:58:24,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:24,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:24,252 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 05:58:24,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:24,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625916173] [2023-08-30 05:58:24,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625916173] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:24,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:24,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 05:58:24,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200856043] [2023-08-30 05:58:24,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:24,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:58:24,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:24,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:58:24,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:58:24,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:24,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 220 transitions, 3996 flow. Second operand has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states 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 05:58:24,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:24,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:24,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:24,991 INFO L130 PetriNetUnfolder]: 2118/4375 cut-off events. [2023-08-30 05:58:24,992 INFO L131 PetriNetUnfolder]: For 62863/63785 co-relation queries the response was YES. [2023-08-30 05:58:25,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26002 conditions, 4375 events. 2118/4375 cut-off events. For 62863/63785 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 32688 event pairs, 570 based on Foata normal form. 108/4419 useless extension candidates. Maximal degree in co-relation 25959. Up to 3289 conditions per place. [2023-08-30 05:58:25,038 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 210 selfloop transitions, 48 changer transitions 8/277 dead transitions. [2023-08-30 05:58:25,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 277 transitions, 4939 flow [2023-08-30 05:58:25,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 05:58:25,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 05:58:25,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2231 transitions. [2023-08-30 05:58:25,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4556781045751634 [2023-08-30 05:58:25,041 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2231 transitions. [2023-08-30 05:58:25,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2231 transitions. [2023-08-30 05:58:25,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:25,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2231 transitions. [2023-08-30 05:58:25,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.4375) internal successors, (2231), 16 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states 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 05:58:25,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 306.0) internal successors, (5202), 17 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states 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 05:58:25,047 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 306.0) internal successors, (5202), 17 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states 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 05:58:25,047 INFO L175 Difference]: Start difference. First operand has 166 places, 220 transitions, 3996 flow. Second operand 16 states and 2231 transitions. [2023-08-30 05:58:25,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 277 transitions, 4939 flow [2023-08-30 05:58:25,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 277 transitions, 4763 flow, removed 13 selfloop flow, removed 12 redundant places. [2023-08-30 05:58:25,169 INFO L231 Difference]: Finished difference. Result has 163 places, 221 transitions, 3946 flow [2023-08-30 05:58:25,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=3835, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3946, PETRI_PLACES=163, PETRI_TRANSITIONS=221} [2023-08-30 05:58:25,169 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 99 predicate places. [2023-08-30 05:58:25,170 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 221 transitions, 3946 flow [2023-08-30 05:58:25,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states 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 05:58:25,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:25,170 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] [2023-08-30 05:58:25,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 05:58:25,171 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:25,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:25,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1055248889, now seen corresponding path program 19 times [2023-08-30 05:58:25,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:25,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681946197] [2023-08-30 05:58:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:25,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:25,355 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 05:58:25,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:25,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681946197] [2023-08-30 05:58:25,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681946197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:25,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:25,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 05:58:25,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170810422] [2023-08-30 05:58:25,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:25,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:58:25,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:25,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:58:25,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:58:25,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 306 [2023-08-30 05:58:25,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 221 transitions, 3946 flow. Second operand has 7 states, 7 states have (on average 138.14285714285714) internal successors, (967), 7 states have internal predecessors, (967), 0 states have call successors, (0), 0 states 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 05:58:25,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:25,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 306 [2023-08-30 05:58:25,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:25,965 INFO L130 PetriNetUnfolder]: 1936/4194 cut-off events. [2023-08-30 05:58:25,965 INFO L131 PetriNetUnfolder]: For 59261/59759 co-relation queries the response was YES. [2023-08-30 05:58:25,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24199 conditions, 4194 events. 1936/4194 cut-off events. For 59261/59759 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 32330 event pairs, 346 based on Foata normal form. 230/4382 useless extension candidates. Maximal degree in co-relation 24157. Up to 1162 conditions per place. [2023-08-30 05:58:25,994 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 129 selfloop transitions, 137 changer transitions 13/290 dead transitions. [2023-08-30 05:58:25,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 290 transitions, 5024 flow [2023-08-30 05:58:25,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:58:25,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:58:25,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1182 transitions. [2023-08-30 05:58:25,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48284313725490197 [2023-08-30 05:58:25,996 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1182 transitions. [2023-08-30 05:58:25,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1182 transitions. [2023-08-30 05:58:25,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:25,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1182 transitions. [2023-08-30 05:58:25,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 147.75) internal successors, (1182), 8 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states 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 05:58:25,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states 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 05:58:26,000 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states 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 05:58:26,000 INFO L175 Difference]: Start difference. First operand has 163 places, 221 transitions, 3946 flow. Second operand 8 states and 1182 transitions. [2023-08-30 05:58:26,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 290 transitions, 5024 flow [2023-08-30 05:58:26,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 290 transitions, 4922 flow, removed 4 selfloop flow, removed 11 redundant places. [2023-08-30 05:58:26,109 INFO L231 Difference]: Finished difference. Result has 160 places, 232 transitions, 4473 flow [2023-08-30 05:58:26,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=3828, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4473, PETRI_PLACES=160, PETRI_TRANSITIONS=232} [2023-08-30 05:58:26,109 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 96 predicate places. [2023-08-30 05:58:26,109 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 232 transitions, 4473 flow [2023-08-30 05:58:26,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.14285714285714) internal successors, (967), 7 states have internal predecessors, (967), 0 states have call successors, (0), 0 states 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 05:58:26,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:26,110 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] [2023-08-30 05:58:26,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 05:58:26,110 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:26,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:26,111 INFO L85 PathProgramCache]: Analyzing trace with hash -285930057, now seen corresponding path program 20 times [2023-08-30 05:58:26,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:26,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080215746] [2023-08-30 05:58:26,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:26,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:26,341 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 05:58:26,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:26,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080215746] [2023-08-30 05:58:26,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080215746] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:26,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:26,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:58:26,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790144463] [2023-08-30 05:58:26,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:26,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:58:26,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:26,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:58:26,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:58:26,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:26,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 232 transitions, 4473 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:26,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:26,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:26,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:27,079 INFO L130 PetriNetUnfolder]: 1886/4021 cut-off events. [2023-08-30 05:58:27,079 INFO L131 PetriNetUnfolder]: For 67085/68225 co-relation queries the response was YES. [2023-08-30 05:58:27,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25243 conditions, 4021 events. 1886/4021 cut-off events. For 67085/68225 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 30314 event pairs, 159 based on Foata normal form. 436/4409 useless extension candidates. Maximal degree in co-relation 25200. Up to 1188 conditions per place. [2023-08-30 05:58:27,107 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 99 selfloop transitions, 178 changer transitions 9/297 dead transitions. [2023-08-30 05:58:27,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 297 transitions, 5400 flow [2023-08-30 05:58:27,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 05:58:27,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 05:58:27,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1445 transitions. [2023-08-30 05:58:27,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-30 05:58:27,110 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1445 transitions. [2023-08-30 05:58:27,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1445 transitions. [2023-08-30 05:58:27,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:27,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1445 transitions. [2023-08-30 05:58:27,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 144.5) internal successors, (1445), 10 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states 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 05:58:27,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states 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 05:58:27,115 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states 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 05:58:27,115 INFO L175 Difference]: Start difference. First operand has 160 places, 232 transitions, 4473 flow. Second operand 10 states and 1445 transitions. [2023-08-30 05:58:27,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 297 transitions, 5400 flow [2023-08-30 05:58:27,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 297 transitions, 5322 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-30 05:58:27,233 INFO L231 Difference]: Finished difference. Result has 166 places, 229 transitions, 4740 flow [2023-08-30 05:58:27,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4395, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4740, PETRI_PLACES=166, PETRI_TRANSITIONS=229} [2023-08-30 05:58:27,233 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 102 predicate places. [2023-08-30 05:58:27,234 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 229 transitions, 4740 flow [2023-08-30 05:58:27,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:27,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:27,234 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] [2023-08-30 05:58:27,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 05:58:27,234 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:27,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:27,236 INFO L85 PathProgramCache]: Analyzing trace with hash 675694263, now seen corresponding path program 21 times [2023-08-30 05:58:27,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:27,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290236400] [2023-08-30 05:58:27,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:27,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:27,429 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 05:58:27,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:27,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290236400] [2023-08-30 05:58:27,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290236400] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:27,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:27,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 05:58:27,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26272344] [2023-08-30 05:58:27,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:27,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 05:58:27,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:27,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 05:58:27,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-30 05:58:27,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:27,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 229 transitions, 4740 flow. Second operand has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states 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 05:58:27,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:27,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:27,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:28,296 INFO L130 PetriNetUnfolder]: 1886/4052 cut-off events. [2023-08-30 05:58:28,296 INFO L131 PetriNetUnfolder]: For 76929/77973 co-relation queries the response was YES. [2023-08-30 05:58:28,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26928 conditions, 4052 events. 1886/4052 cut-off events. For 76929/77973 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 30796 event pairs, 151 based on Foata normal form. 378/4380 useless extension candidates. Maximal degree in co-relation 26884. Up to 1128 conditions per place. [2023-08-30 05:58:28,327 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 108 selfloop transitions, 181 changer transitions 6/306 dead transitions. [2023-08-30 05:58:28,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 306 transitions, 5838 flow [2023-08-30 05:58:28,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 05:58:28,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 05:58:28,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1590 transitions. [2023-08-30 05:58:28,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47237076648841353 [2023-08-30 05:58:28,329 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1590 transitions. [2023-08-30 05:58:28,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1590 transitions. [2023-08-30 05:58:28,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:28,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1590 transitions. [2023-08-30 05:58:28,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 144.54545454545453) internal successors, (1590), 11 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states 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 05:58:28,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states 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 05:58:28,332 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states 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 05:58:28,332 INFO L175 Difference]: Start difference. First operand has 166 places, 229 transitions, 4740 flow. Second operand 11 states and 1590 transitions. [2023-08-30 05:58:28,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 306 transitions, 5838 flow [2023-08-30 05:58:28,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 306 transitions, 5471 flow, removed 14 selfloop flow, removed 10 redundant places. [2023-08-30 05:58:28,452 INFO L231 Difference]: Finished difference. Result has 167 places, 233 transitions, 4857 flow [2023-08-30 05:58:28,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4411, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4857, PETRI_PLACES=167, PETRI_TRANSITIONS=233} [2023-08-30 05:58:28,453 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 103 predicate places. [2023-08-30 05:58:28,453 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 233 transitions, 4857 flow [2023-08-30 05:58:28,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states 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 05:58:28,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:28,453 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] [2023-08-30 05:58:28,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 05:58:28,454 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:28,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:28,454 INFO L85 PathProgramCache]: Analyzing trace with hash -719863875, now seen corresponding path program 22 times [2023-08-30 05:58:28,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:28,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950354607] [2023-08-30 05:58:28,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:28,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:28,717 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 05:58:28,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:28,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950354607] [2023-08-30 05:58:28,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950354607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:28,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:28,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 05:58:28,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457406775] [2023-08-30 05:58:28,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:28,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 05:58:28,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:28,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 05:58:28,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-30 05:58:28,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 306 [2023-08-30 05:58:28,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 233 transitions, 4857 flow. Second operand has 9 states, 9 states have (on average 132.33333333333334) internal successors, (1191), 9 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states 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 05:58:28,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:28,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 306 [2023-08-30 05:58:28,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:29,648 INFO L130 PetriNetUnfolder]: 2371/4770 cut-off events. [2023-08-30 05:58:29,649 INFO L131 PetriNetUnfolder]: For 90921/92089 co-relation queries the response was YES. [2023-08-30 05:58:29,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30803 conditions, 4770 events. 2371/4770 cut-off events. For 90921/92089 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 35179 event pairs, 215 based on Foata normal form. 422/5136 useless extension candidates. Maximal degree in co-relation 30760. Up to 1463 conditions per place. [2023-08-30 05:58:29,685 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 109 selfloop transitions, 178 changer transitions 22/319 dead transitions. [2023-08-30 05:58:29,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 319 transitions, 6066 flow [2023-08-30 05:58:29,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 05:58:29,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 05:58:29,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1698 transitions. [2023-08-30 05:58:29,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624183006535948 [2023-08-30 05:58:29,689 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1698 transitions. [2023-08-30 05:58:29,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1698 transitions. [2023-08-30 05:58:29,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:29,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1698 transitions. [2023-08-30 05:58:29,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.5) internal successors, (1698), 12 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states 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 05:58:29,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states 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 05:58:29,695 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states 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 05:58:29,695 INFO L175 Difference]: Start difference. First operand has 167 places, 233 transitions, 4857 flow. Second operand 12 states and 1698 transitions. [2023-08-30 05:58:29,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 319 transitions, 6066 flow [2023-08-30 05:58:29,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 319 transitions, 5716 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 05:58:29,857 INFO L231 Difference]: Finished difference. Result has 172 places, 229 transitions, 4825 flow [2023-08-30 05:58:29,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4525, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4825, PETRI_PLACES=172, PETRI_TRANSITIONS=229} [2023-08-30 05:58:29,857 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 108 predicate places. [2023-08-30 05:58:29,857 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 229 transitions, 4825 flow [2023-08-30 05:58:29,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 132.33333333333334) internal successors, (1191), 9 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states 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 05:58:29,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:29,858 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] [2023-08-30 05:58:29,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 05:58:29,858 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:29,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:29,858 INFO L85 PathProgramCache]: Analyzing trace with hash 472995197, now seen corresponding path program 23 times [2023-08-30 05:58:29,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:29,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312158859] [2023-08-30 05:58:29,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:29,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:30,036 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 05:58:30,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:30,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312158859] [2023-08-30 05:58:30,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312158859] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:30,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:30,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 05:58:30,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815078277] [2023-08-30 05:58:30,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:30,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 05:58:30,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:30,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 05:58:30,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-30 05:58:30,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:30,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 229 transitions, 4825 flow. Second operand has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states 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 05:58:30,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:30,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:30,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:30,745 INFO L130 PetriNetUnfolder]: 1806/3929 cut-off events. [2023-08-30 05:58:30,746 INFO L131 PetriNetUnfolder]: For 77203/78293 co-relation queries the response was YES. [2023-08-30 05:58:30,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26334 conditions, 3929 events. 1806/3929 cut-off events. For 77203/78293 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 30031 event pairs, 164 based on Foata normal form. 416/4303 useless extension candidates. Maximal degree in co-relation 26290. Up to 1094 conditions per place. [2023-08-30 05:58:30,776 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 104 selfloop transitions, 173 changer transitions 17/305 dead transitions. [2023-08-30 05:58:30,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 305 transitions, 5872 flow [2023-08-30 05:58:30,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 05:58:30,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 05:58:30,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1593 transitions. [2023-08-30 05:58:30,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732620320855615 [2023-08-30 05:58:30,778 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1593 transitions. [2023-08-30 05:58:30,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1593 transitions. [2023-08-30 05:58:30,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:30,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1593 transitions. [2023-08-30 05:58:30,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 144.8181818181818) internal successors, (1593), 11 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states 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 05:58:30,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states 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 05:58:30,782 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states 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 05:58:30,782 INFO L175 Difference]: Start difference. First operand has 172 places, 229 transitions, 4825 flow. Second operand 11 states and 1593 transitions. [2023-08-30 05:58:30,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 305 transitions, 5872 flow [2023-08-30 05:58:30,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 305 transitions, 5652 flow, removed 7 selfloop flow, removed 11 redundant places. [2023-08-30 05:58:30,897 INFO L231 Difference]: Finished difference. Result has 173 places, 224 transitions, 4905 flow [2023-08-30 05:58:30,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4585, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4905, PETRI_PLACES=173, PETRI_TRANSITIONS=224} [2023-08-30 05:58:30,898 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 109 predicate places. [2023-08-30 05:58:30,898 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 224 transitions, 4905 flow [2023-08-30 05:58:30,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states 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 05:58:30,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:30,898 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] [2023-08-30 05:58:30,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 05:58:30,899 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:30,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:30,899 INFO L85 PathProgramCache]: Analyzing trace with hash -585421383, now seen corresponding path program 24 times [2023-08-30 05:58:30,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:30,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039505449] [2023-08-30 05:58:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:30,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:31,145 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 05:58:31,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:31,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039505449] [2023-08-30 05:58:31,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039505449] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:31,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:31,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 05:58:31,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983619970] [2023-08-30 05:58:31,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:31,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:58:31,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:31,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:58:31,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:58:31,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:31,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 224 transitions, 4905 flow. Second operand has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states 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 05:58:31,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:31,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:31,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:31,854 INFO L130 PetriNetUnfolder]: 1614/3514 cut-off events. [2023-08-30 05:58:31,855 INFO L131 PetriNetUnfolder]: For 82097/82823 co-relation queries the response was YES. [2023-08-30 05:58:31,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24172 conditions, 3514 events. 1614/3514 cut-off events. For 82097/82823 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 26466 event pairs, 414 based on Foata normal form. 188/3660 useless extension candidates. Maximal degree in co-relation 24128. Up to 2309 conditions per place. [2023-08-30 05:58:31,880 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 202 selfloop transitions, 64 changer transitions 5/282 dead transitions. [2023-08-30 05:58:31,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 282 transitions, 5921 flow [2023-08-30 05:58:31,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 05:58:31,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 05:58:31,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2238 transitions. [2023-08-30 05:58:31,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571078431372549 [2023-08-30 05:58:31,882 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2238 transitions. [2023-08-30 05:58:31,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2238 transitions. [2023-08-30 05:58:31,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:31,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2238 transitions. [2023-08-30 05:58:31,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.875) internal successors, (2238), 16 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states 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 05:58:31,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 306.0) internal successors, (5202), 17 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states 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 05:58:31,888 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 306.0) internal successors, (5202), 17 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states 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 05:58:31,888 INFO L175 Difference]: Start difference. First operand has 173 places, 224 transitions, 4905 flow. Second operand 16 states and 2238 transitions. [2023-08-30 05:58:31,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 282 transitions, 5921 flow [2023-08-30 05:58:32,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 282 transitions, 5768 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-30 05:58:32,011 INFO L231 Difference]: Finished difference. Result has 183 places, 225 transitions, 4933 flow [2023-08-30 05:58:32,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4772, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4933, PETRI_PLACES=183, PETRI_TRANSITIONS=225} [2023-08-30 05:58:32,012 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 119 predicate places. [2023-08-30 05:58:32,012 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 225 transitions, 4933 flow [2023-08-30 05:58:32,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states 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 05:58:32,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:32,012 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] [2023-08-30 05:58:32,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 05:58:32,012 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:32,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:32,013 INFO L85 PathProgramCache]: Analyzing trace with hash 462488823, now seen corresponding path program 25 times [2023-08-30 05:58:32,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:32,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749155626] [2023-08-30 05:58:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:32,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:32,189 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 05:58:32,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:32,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749155626] [2023-08-30 05:58:32,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749155626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:32,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:32,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:58:32,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073311082] [2023-08-30 05:58:32,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:32,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:58:32,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:32,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:58:32,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:58:32,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:32,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 225 transitions, 4933 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:32,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:32,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:32,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:32,884 INFO L130 PetriNetUnfolder]: 1566/3430 cut-off events. [2023-08-30 05:58:32,884 INFO L131 PetriNetUnfolder]: For 79940/80732 co-relation queries the response was YES. [2023-08-30 05:58:32,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23132 conditions, 3430 events. 1566/3430 cut-off events. For 79940/80732 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25798 event pairs, 280 based on Foata normal form. 272/3660 useless extension candidates. Maximal degree in co-relation 23088. Up to 1197 conditions per place. [2023-08-30 05:58:32,910 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 121 selfloop transitions, 129 changer transitions 18/278 dead transitions. [2023-08-30 05:58:32,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 278 transitions, 5775 flow [2023-08-30 05:58:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 05:58:32,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 05:58:32,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1571 transitions. [2023-08-30 05:58:32,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4667260843731432 [2023-08-30 05:58:32,912 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1571 transitions. [2023-08-30 05:58:32,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1571 transitions. [2023-08-30 05:58:32,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:32,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1571 transitions. [2023-08-30 05:58:32,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 142.8181818181818) internal successors, (1571), 11 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states 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 05:58:32,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states 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 05:58:32,916 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states 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 05:58:32,917 INFO L175 Difference]: Start difference. First operand has 183 places, 225 transitions, 4933 flow. Second operand 11 states and 1571 transitions. [2023-08-30 05:58:32,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 278 transitions, 5775 flow [2023-08-30 05:58:33,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 278 transitions, 5672 flow, removed 15 selfloop flow, removed 10 redundant places. [2023-08-30 05:58:33,039 INFO L231 Difference]: Finished difference. Result has 184 places, 218 transitions, 4977 flow [2023-08-30 05:58:33,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4811, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4977, PETRI_PLACES=184, PETRI_TRANSITIONS=218} [2023-08-30 05:58:33,039 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 120 predicate places. [2023-08-30 05:58:33,039 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 218 transitions, 4977 flow [2023-08-30 05:58:33,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:33,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:33,040 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] [2023-08-30 05:58:33,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 05:58:33,040 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:33,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:33,040 INFO L85 PathProgramCache]: Analyzing trace with hash -177458077, now seen corresponding path program 26 times [2023-08-30 05:58:33,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:33,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833786221] [2023-08-30 05:58:33,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:33,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:33,234 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 05:58:33,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:33,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833786221] [2023-08-30 05:58:33,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833786221] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:33,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:33,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:58:33,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947716404] [2023-08-30 05:58:33,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:33,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:58:33,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:33,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:58:33,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:58:33,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:33,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 218 transitions, 4977 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:33,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:33,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:33,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:33,710 INFO L130 PetriNetUnfolder]: 1178/2601 cut-off events. [2023-08-30 05:58:33,710 INFO L131 PetriNetUnfolder]: For 68155/68525 co-relation queries the response was YES. [2023-08-30 05:58:33,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18403 conditions, 2601 events. 1178/2601 cut-off events. For 68155/68525 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 18575 event pairs, 354 based on Foata normal form. 86/2655 useless extension candidates. Maximal degree in co-relation 18358. Up to 1907 conditions per place. [2023-08-30 05:58:33,729 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 165 selfloop transitions, 23 changer transitions 17/215 dead transitions. [2023-08-30 05:58:33,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 215 transitions, 4836 flow [2023-08-30 05:58:33,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 05:58:33,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 05:58:33,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1401 transitions. [2023-08-30 05:58:33,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45784313725490194 [2023-08-30 05:58:33,732 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1401 transitions. [2023-08-30 05:58:33,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1401 transitions. [2023-08-30 05:58:33,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:33,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1401 transitions. [2023-08-30 05:58:33,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.1) internal successors, (1401), 10 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:58:33,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states 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 05:58:33,737 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states 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 05:58:33,737 INFO L175 Difference]: Start difference. First operand has 184 places, 218 transitions, 4977 flow. Second operand 10 states and 1401 transitions. [2023-08-30 05:58:33,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 215 transitions, 4836 flow [2023-08-30 05:58:33,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 215 transitions, 4467 flow, removed 22 selfloop flow, removed 14 redundant places. [2023-08-30 05:58:33,840 INFO L231 Difference]: Finished difference. Result has 172 places, 176 transitions, 3586 flow [2023-08-30 05:58:33,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=3792, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3586, PETRI_PLACES=172, PETRI_TRANSITIONS=176} [2023-08-30 05:58:33,841 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 108 predicate places. [2023-08-30 05:58:33,841 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 176 transitions, 3586 flow [2023-08-30 05:58:33,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:33,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:33,841 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] [2023-08-30 05:58:33,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 05:58:33,842 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:33,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:33,842 INFO L85 PathProgramCache]: Analyzing trace with hash -977182193, now seen corresponding path program 27 times [2023-08-30 05:58:33,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:33,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587875585] [2023-08-30 05:58:33,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:33,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:34,029 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 05:58:34,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:34,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587875585] [2023-08-30 05:58:34,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587875585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:34,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:34,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:58:34,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863350160] [2023-08-30 05:58:34,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:34,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:58:34,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:34,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:58:34,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:58:34,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:34,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 176 transitions, 3586 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:34,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:34,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:34,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:34,480 INFO L130 PetriNetUnfolder]: 763/1728 cut-off events. [2023-08-30 05:58:34,480 INFO L131 PetriNetUnfolder]: For 28332/28610 co-relation queries the response was YES. [2023-08-30 05:58:34,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10917 conditions, 1728 events. 763/1728 cut-off events. For 28332/28610 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11308 event pairs, 194 based on Foata normal form. 114/1828 useless extension candidates. Maximal degree in co-relation 10876. Up to 1106 conditions per place. [2023-08-30 05:58:34,492 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 113 selfloop transitions, 29 changer transitions 25/177 dead transitions. [2023-08-30 05:58:34,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 177 transitions, 3217 flow [2023-08-30 05:58:34,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 05:58:34,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 05:58:34,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1541 transitions. [2023-08-30 05:58:34,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45781342840166367 [2023-08-30 05:58:34,498 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1541 transitions. [2023-08-30 05:58:34,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1541 transitions. [2023-08-30 05:58:34,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:34,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1541 transitions. [2023-08-30 05:58:34,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 140.0909090909091) internal successors, (1541), 11 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states 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 05:58:34,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states 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 05:58:34,503 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states 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 05:58:34,503 INFO L175 Difference]: Start difference. First operand has 172 places, 176 transitions, 3586 flow. Second operand 11 states and 1541 transitions. [2023-08-30 05:58:34,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 177 transitions, 3217 flow [2023-08-30 05:58:34,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 177 transitions, 3082 flow, removed 10 selfloop flow, removed 15 redundant places. [2023-08-30 05:58:34,554 INFO L231 Difference]: Finished difference. Result has 163 places, 129 transitions, 2191 flow [2023-08-30 05:58:34,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2191, PETRI_PLACES=163, PETRI_TRANSITIONS=129} [2023-08-30 05:58:34,555 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 99 predicate places. [2023-08-30 05:58:34,555 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 129 transitions, 2191 flow [2023-08-30 05:58:34,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:34,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:34,556 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] [2023-08-30 05:58:34,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 05:58:34,556 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:34,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:34,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1035502487, now seen corresponding path program 28 times [2023-08-30 05:58:34,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:34,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298202395] [2023-08-30 05:58:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:34,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:34,823 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 05:58:34,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:34,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298202395] [2023-08-30 05:58:34,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298202395] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:34,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:34,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 05:58:34,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880322228] [2023-08-30 05:58:34,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:34,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:58:34,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:34,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:58:34,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:58:34,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 306 [2023-08-30 05:58:34,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 129 transitions, 2191 flow. Second operand has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states 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 05:58:34,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:34,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 306 [2023-08-30 05:58:34,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:35,277 INFO L130 PetriNetUnfolder]: 756/1587 cut-off events. [2023-08-30 05:58:35,278 INFO L131 PetriNetUnfolder]: For 22006/22178 co-relation queries the response was YES. [2023-08-30 05:58:35,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9350 conditions, 1587 events. 756/1587 cut-off events. For 22006/22178 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9562 event pairs, 250 based on Foata normal form. 48/1617 useless extension candidates. Maximal degree in co-relation 9309. Up to 1185 conditions per place. [2023-08-30 05:58:35,287 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 86 selfloop transitions, 11 changer transitions 46/152 dead transitions. [2023-08-30 05:58:35,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 152 transitions, 2470 flow [2023-08-30 05:58:35,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 05:58:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 05:58:35,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2029 transitions. [2023-08-30 05:58:35,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420479302832244 [2023-08-30 05:58:35,290 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2029 transitions. [2023-08-30 05:58:35,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2029 transitions. [2023-08-30 05:58:35,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:35,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2029 transitions. [2023-08-30 05:58:35,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 135.26666666666668) internal successors, (2029), 15 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states 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 05:58:35,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states 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 05:58:35,294 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states 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 05:58:35,294 INFO L175 Difference]: Start difference. First operand has 163 places, 129 transitions, 2191 flow. Second operand 15 states and 2029 transitions. [2023-08-30 05:58:35,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 152 transitions, 2470 flow [2023-08-30 05:58:35,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 152 transitions, 2078 flow, removed 55 selfloop flow, removed 34 redundant places. [2023-08-30 05:58:35,322 INFO L231 Difference]: Finished difference. Result has 139 places, 92 transitions, 1169 flow [2023-08-30 05:58:35,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1169, PETRI_PLACES=139, PETRI_TRANSITIONS=92} [2023-08-30 05:58:35,323 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 75 predicate places. [2023-08-30 05:58:35,323 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 92 transitions, 1169 flow [2023-08-30 05:58:35,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states 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 05:58:35,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:35,323 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] [2023-08-30 05:58:35,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-30 05:58:35,324 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:35,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:35,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1988646801, now seen corresponding path program 29 times [2023-08-30 05:58:35,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:35,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109832549] [2023-08-30 05:58:35,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:35,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:35,519 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 05:58:35,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:35,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109832549] [2023-08-30 05:58:35,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109832549] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:35,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:35,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:58:35,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957953742] [2023-08-30 05:58:35,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:35,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:58:35,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:35,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:58:35,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:58:35,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:35,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 92 transitions, 1169 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:35,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:35,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:35,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:35,750 INFO L130 PetriNetUnfolder]: 143/356 cut-off events. [2023-08-30 05:58:35,750 INFO L131 PetriNetUnfolder]: For 4132/4228 co-relation queries the response was YES. [2023-08-30 05:58:35,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2104 conditions, 356 events. 143/356 cut-off events. For 4132/4228 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1510 event pairs, 2 based on Foata normal form. 80/436 useless extension candidates. Maximal degree in co-relation 2067. Up to 110 conditions per place. [2023-08-30 05:58:35,753 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 37 selfloop transitions, 15 changer transitions 27/87 dead transitions. [2023-08-30 05:58:35,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 87 transitions, 976 flow [2023-08-30 05:58:35,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:58:35,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:58:35,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1261 transitions. [2023-08-30 05:58:35,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4578794480755265 [2023-08-30 05:58:35,758 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1261 transitions. [2023-08-30 05:58:35,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1261 transitions. [2023-08-30 05:58:35,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:35,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1261 transitions. [2023-08-30 05:58:35,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 140.11111111111111) internal successors, (1261), 9 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states 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 05:58:35,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 05:58:35,762 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 05:58:35,762 INFO L175 Difference]: Start difference. First operand has 139 places, 92 transitions, 1169 flow. Second operand 9 states and 1261 transitions. [2023-08-30 05:58:35,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 87 transitions, 976 flow [2023-08-30 05:58:35,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 87 transitions, 740 flow, removed 46 selfloop flow, removed 34 redundant places. [2023-08-30 05:58:35,772 INFO L231 Difference]: Finished difference. Result has 94 places, 43 transitions, 300 flow [2023-08-30 05:58:35,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=300, PETRI_PLACES=94, PETRI_TRANSITIONS=43} [2023-08-30 05:58:35,773 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 30 predicate places. [2023-08-30 05:58:35,774 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 43 transitions, 300 flow [2023-08-30 05:58:35,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states 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 05:58:35,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:35,774 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] [2023-08-30 05:58:35,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-30 05:58:35,774 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 05:58:35,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:35,775 INFO L85 PathProgramCache]: Analyzing trace with hash 2058135143, now seen corresponding path program 30 times [2023-08-30 05:58:35,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:35,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621343573] [2023-08-30 05:58:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:35,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:35,952 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 05:58:35,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:35,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621343573] [2023-08-30 05:58:35,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621343573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:58:35,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:58:35,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 05:58:35,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260769209] [2023-08-30 05:58:35,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:58:35,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 05:58:35,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:35,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 05:58:35,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-30 05:58:35,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-30 05:58:35,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 43 transitions, 300 flow. Second operand has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states 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 05:58:35,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:35,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-30 05:58:35,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:36,076 INFO L130 PetriNetUnfolder]: 36/103 cut-off events. [2023-08-30 05:58:36,076 INFO L131 PetriNetUnfolder]: For 572/572 co-relation queries the response was YES. [2023-08-30 05:58:36,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 103 events. 36/103 cut-off events. For 572/572 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 279 event pairs, 0 based on Foata normal form. 4/107 useless extension candidates. Maximal degree in co-relation 501. Up to 23 conditions per place. [2023-08-30 05:58:36,077 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-08-30 05:58:36,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 42 transitions, 350 flow [2023-08-30 05:58:36,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:58:36,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:58:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1226 transitions. [2023-08-30 05:58:36,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44517066085693535 [2023-08-30 05:58:36,080 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1226 transitions. [2023-08-30 05:58:36,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1226 transitions. [2023-08-30 05:58:36,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:36,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1226 transitions. [2023-08-30 05:58:36,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.22222222222223) internal successors, (1226), 9 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states 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 05:58:36,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 05:58:36,083 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 05:58:36,084 INFO L175 Difference]: Start difference. First operand has 94 places, 43 transitions, 300 flow. Second operand 9 states and 1226 transitions. [2023-08-30 05:58:36,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 42 transitions, 350 flow [2023-08-30 05:58:36,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 42 transitions, 201 flow, removed 20 selfloop flow, removed 29 redundant places. [2023-08-30 05:58:36,086 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-08-30 05:58:36,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-08-30 05:58:36,087 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -11 predicate places. [2023-08-30 05:58:36,087 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-08-30 05:58:36,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states 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 05:58:36,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 22 remaining) [2023-08-30 05:58:36,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 22 remaining) [2023-08-30 05:58:36,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 22 remaining) [2023-08-30 05:58:36,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 22 remaining) [2023-08-30 05:58:36,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 22 remaining) [2023-08-30 05:58:36,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 22 remaining) [2023-08-30 05:58:36,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 22 remaining) [2023-08-30 05:58:36,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 22 remaining) [2023-08-30 05:58:36,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 22 remaining) [2023-08-30 05:58:36,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 22 remaining) [2023-08-30 05:58:36,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 22 remaining) [2023-08-30 05:58:36,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 22 remaining) [2023-08-30 05:58:36,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 22 remaining) [2023-08-30 05:58:36,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 22 remaining) [2023-08-30 05:58:36,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 22 remaining) [2023-08-30 05:58:36,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 22 remaining) [2023-08-30 05:58:36,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (5 of 22 remaining) [2023-08-30 05:58:36,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK (4 of 22 remaining) [2023-08-30 05:58:36,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 22 remaining) [2023-08-30 05:58:36,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 22 remaining) [2023-08-30 05:58:36,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 22 remaining) [2023-08-30 05:58:36,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 22 remaining) [2023-08-30 05:58:36,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-30 05:58:36,098 INFO L445 BasicCegarLoop]: Path program histogram: [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:58:36,101 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 05:58:36,101 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 05:58:36,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:58:36 BasicIcfg [2023-08-30 05:58:36,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 05:58:36,105 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 05:58:36,105 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 05:58:36,105 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 05:58:36,106 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:57:52" (3/4) ... [2023-08-30 05:58:36,108 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 05:58:36,114 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 05:58:36,114 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 05:58:36,114 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 05:58:36,114 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-08-30 05:58:36,121 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-08-30 05:58:36,122 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 05:58:36,122 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 05:58:36,122 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 05:58:36,166 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 05:58:36,166 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 05:58:36,170 INFO L158 Benchmark]: Toolchain (without parser) took 44500.94ms. Allocated memory was 79.7MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 57.4MB in the beginning and 898.0MB in the end (delta: -840.6MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-08-30 05:58:36,170 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 05:58:36,171 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.57ms. Allocated memory is still 79.7MB. Free memory was 57.2MB in the beginning and 45.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 05:58:36,171 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.16ms. Allocated memory is still 79.7MB. Free memory was 45.6MB in the beginning and 43.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 05:58:36,171 INFO L158 Benchmark]: Boogie Preprocessor took 29.32ms. Allocated memory is still 79.7MB. Free memory was 43.5MB in the beginning and 42.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 05:58:36,171 INFO L158 Benchmark]: RCFGBuilder took 610.81ms. Allocated memory is still 79.7MB. Free memory was 41.9MB in the beginning and 36.3MB in the end (delta: 5.5MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2023-08-30 05:58:36,172 INFO L158 Benchmark]: TraceAbstraction took 43446.66ms. Allocated memory was 79.7MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 35.9MB in the beginning and 902.2MB in the end (delta: -866.3MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2023-08-30 05:58:36,172 INFO L158 Benchmark]: Witness Printer took 61.54ms. Allocated memory is still 2.1GB. Free memory was 902.2MB in the beginning and 898.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 05:58:36,173 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.57ms. Allocated memory is still 79.7MB. Free memory was 57.2MB in the beginning and 45.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.16ms. Allocated memory is still 79.7MB. Free memory was 45.6MB in the beginning and 43.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.32ms. Allocated memory is still 79.7MB. Free memory was 43.5MB in the beginning and 42.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 610.81ms. Allocated memory is still 79.7MB. Free memory was 41.9MB in the beginning and 36.3MB in the end (delta: 5.5MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * TraceAbstraction took 43446.66ms. Allocated memory was 79.7MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 35.9MB in the beginning and 902.2MB in the end (delta: -866.3MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 61.54ms. Allocated memory is still 2.1GB. Free memory was 902.2MB in the beginning and 898.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.1s, 166 PlacesBefore, 64 PlacesAfterwards, 155 TransitionsBefore, 51 TransitionsAfterwards, 1702 CoEnabledTransitionPairs, 8 FixpointIterations, 90 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 143 TotalNumberOfCompositions, 9805 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3770, independent: 3504, independent conditional: 0, independent unconditional: 3504, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 819, independent: 786, independent conditional: 0, independent unconditional: 786, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3770, independent: 2718, independent conditional: 0, independent unconditional: 2718, dependent: 233, dependent conditional: 0, dependent unconditional: 233, unknown: 819, unknown conditional: 0, unknown unconditional: 819] , Statistics on independence cache: Total cache size (in pairs): 226, Positive cache size: 207, Positive conditional cache size: 0, Positive unconditional cache size: 207, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 146]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 120]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 195 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 43.3s, OverallIterations: 39, TraceHistogramMax: 1, PathProgramHistogramMax: 30, EmptinessCheckTime: 0.0s, AutomataDifference: 28.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3483 SdHoareTripleChecker+Valid, 7.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2819 mSDsluCounter, 1115 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1021 mSDsCounter, 730 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12766 IncrementalHoareTripleChecker+Invalid, 13496 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 730 mSolverCounterUnsat, 94 mSDtfsCounter, 12766 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 383 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4977occurred in iteration=34, InterpolantAutomatonStates: 359, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 1069 NumberOfCodeBlocks, 1069 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1030 ConstructedInterpolants, 0 QuantifiedInterpolants, 4347 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 39 InterpolantComputations, 39 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 05:58:36,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE