./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/test-easy10.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 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 01:16:26,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 01:16:26,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 01:16:26,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 01:16:26,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 01:16:26,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 01:16:26,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 01:16:26,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 01:16:26,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 01:16:26,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 01:16:26,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 01:16:26,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 01:16:26,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 01:16:26,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 01:16:26,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 01:16:26,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 01:16:26,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 01:16:26,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 01:16:26,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 01:16:26,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 01:16:26,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 01:16:26,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 01:16:26,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 01:16:26,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 01:16:26,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 01:16:26,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 01:16:26,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 01:16:26,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 01:16:26,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 01:16:26,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 01:16:26,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 01:16:26,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 01:16:26,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 01:16:26,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 01:16:26,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 01:16:26,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 01:16:26,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 01:16:26,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 01:16:26,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 01:16:26,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 01:16:26,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 01:16:26,919 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 01:16:26,954 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 01:16:26,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 01:16:26,955 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 01:16:26,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 01:16:26,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 01:16:26,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 01:16:26,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 01:16:26,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 01:16:26,957 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 01:16:26,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 01:16:26,958 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 01:16:26,959 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 01:16:26,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 01:16:26,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 01:16:26,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 01:16:26,959 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 01:16:26,960 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 01:16:26,960 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 01:16:26,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 01:16:26,960 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 01:16:26,960 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 01:16:26,961 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 01:16:26,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 01:16:26,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 01:16:26,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 01:16:26,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:16:26,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 01:16:26,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 01:16:26,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 01:16:26,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 01:16:26,962 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 01:16:26,963 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 01:16:26,963 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 01:16:26,963 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 01:16:26,963 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 01:16:27,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 01:16:27,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 01:16:27,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 01:16:27,302 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 01:16:27,302 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 01:16:27,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-08-30 01:16:28,589 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 01:16:28,808 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 01:16:28,809 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-08-30 01:16:28,815 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8db625011/03210d5760dc40c78eb9da4c4e3d0e95/FLAG0102a78f4 [2023-08-30 01:16:28,826 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8db625011/03210d5760dc40c78eb9da4c4e3d0e95 [2023-08-30 01:16:28,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 01:16:28,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 01:16:28,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 01:16:28,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 01:16:28,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 01:16:28,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:16:28" (1/1) ... [2023-08-30 01:16:28,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb00787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:28, skipping insertion in model container [2023-08-30 01:16:28,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:16:28" (1/1) ... [2023-08-30 01:16:28,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 01:16:28,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 01:16:28,999 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/test-easy10.wvr.c[3907,3920] [2023-08-30 01:16:29,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:16:29,019 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 01:16:29,065 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/test-easy10.wvr.c[3907,3920] [2023-08-30 01:16:29,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:16:29,076 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 01:16:29,079 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 01:16:29,084 INFO L208 MainTranslator]: Completed translation [2023-08-30 01:16:29,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:29 WrapperNode [2023-08-30 01:16:29,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 01:16:29,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 01:16:29,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 01:16:29,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 01:16:29,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:29" (1/1) ... [2023-08-30 01:16:29,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:29" (1/1) ... [2023-08-30 01:16:29,143 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 192 [2023-08-30 01:16:29,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 01:16:29,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 01:16:29,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 01:16:29,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 01:16:29,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:29" (1/1) ... [2023-08-30 01:16:29,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:29" (1/1) ... [2023-08-30 01:16:29,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:29" (1/1) ... [2023-08-30 01:16:29,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:29" (1/1) ... [2023-08-30 01:16:29,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:29" (1/1) ... [2023-08-30 01:16:29,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:29" (1/1) ... [2023-08-30 01:16:29,187 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:29" (1/1) ... [2023-08-30 01:16:29,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:29" (1/1) ... [2023-08-30 01:16:29,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 01:16:29,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 01:16:29,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 01:16:29,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 01:16:29,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:29" (1/1) ... [2023-08-30 01:16:29,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:16:29,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:16:29,231 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 01:16:29,259 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 01:16:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 01:16:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 01:16:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 01:16:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 01:16:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 01:16:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 01:16:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 01:16:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 01:16:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 01:16:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 01:16:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 01:16:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 01:16:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 01:16:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 01:16:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 01:16:29,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 01:16:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 01:16:29,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 01:16:29,288 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 01:16:29,423 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 01:16:29,425 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 01:16:29,685 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 01:16:29,786 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 01:16:29,787 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 01:16:29,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:16:29 BoogieIcfgContainer [2023-08-30 01:16:29,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 01:16:29,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 01:16:29,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 01:16:29,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 01:16:29,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:16:28" (1/3) ... [2023-08-30 01:16:29,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19440b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:16:29, skipping insertion in model container [2023-08-30 01:16:29,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:29" (2/3) ... [2023-08-30 01:16:29,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19440b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:16:29, skipping insertion in model container [2023-08-30 01:16:29,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:16:29" (3/3) ... [2023-08-30 01:16:29,797 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2023-08-30 01:16:29,812 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 01:16:29,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-30 01:16:29,812 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 01:16:29,943 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 01:16:29,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 155 transitions, 342 flow [2023-08-30 01:16:30,065 INFO L130 PetriNetUnfolder]: 2/151 cut-off events. [2023-08-30 01:16:30,065 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 01:16:30,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 151 events. 2/151 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 133 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2023-08-30 01:16:30,069 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 155 transitions, 342 flow [2023-08-30 01:16:30,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 147 transitions, 318 flow [2023-08-30 01:16:30,077 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 01:16:30,086 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 147 transitions, 318 flow [2023-08-30 01:16:30,089 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 147 transitions, 318 flow [2023-08-30 01:16:30,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 147 transitions, 318 flow [2023-08-30 01:16:30,120 INFO L130 PetriNetUnfolder]: 2/147 cut-off events. [2023-08-30 01:16:30,121 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 01:16:30,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 147 events. 2/147 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2023-08-30 01:16:30,124 INFO L119 LiptonReduction]: Number of co-enabled transitions 2336 [2023-08-30 01:16:35,012 INFO L134 LiptonReduction]: Checked pairs total: 14657 [2023-08-30 01:16:35,013 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-30 01:16:35,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 01:16:35,037 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;@1e120291, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 01:16:35,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-30 01:16:35,039 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 01:16:35,039 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:16:35,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:35,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 01:16:35,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 01:16:35,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:35,045 INFO L85 PathProgramCache]: Analyzing trace with hash 571, now seen corresponding path program 1 times [2023-08-30 01:16:35,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:35,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061324594] [2023-08-30 01:16:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:35,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:35,137 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 01:16:35,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:35,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061324594] [2023-08-30 01:16:35,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061324594] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:35,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:35,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 01:16:35,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832508812] [2023-08-30 01:16:35,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:35,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 01:16:35,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:35,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 01:16:35,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 01:16:35,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 277 [2023-08-30 01:16:35,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 140 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 01:16:35,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:35,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 277 [2023-08-30 01:16:35,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:35,453 INFO L130 PetriNetUnfolder]: 1328/2127 cut-off events. [2023-08-30 01:16:35,454 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-08-30 01:16:35,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4220 conditions, 2127 events. 1328/2127 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13522 event pairs, 1328 based on Foata normal form. 0/1544 useless extension candidates. Maximal degree in co-relation 3308. Up to 1968 conditions per place. [2023-08-30 01:16:35,472 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 39 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2023-08-30 01:16:35,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 55 transitions, 212 flow [2023-08-30 01:16:35,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 01:16:35,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 01:16:35,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 322 transitions. [2023-08-30 01:16:35,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5812274368231047 [2023-08-30 01:16:35,489 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 322 transitions. [2023-08-30 01:16:35,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 322 transitions. [2023-08-30 01:16:35,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:35,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 322 transitions. [2023-08-30 01:16:35,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 161.0) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:35,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:35,506 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:35,508 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 140 flow. Second operand 2 states and 322 transitions. [2023-08-30 01:16:35,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 55 transitions, 212 flow [2023-08-30 01:16:35,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 196 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-30 01:16:35,524 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 118 flow [2023-08-30 01:16:35,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-08-30 01:16:35,533 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2023-08-30 01:16:35,534 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 118 flow [2023-08-30 01:16:35,534 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 01:16:35,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:35,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:16:35,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 01:16:35,535 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 01:16:35,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:35,538 INFO L85 PathProgramCache]: Analyzing trace with hash 561080, now seen corresponding path program 1 times [2023-08-30 01:16:35,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:35,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647032119] [2023-08-30 01:16:35,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:35,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:35,979 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 01:16:35,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:35,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647032119] [2023-08-30 01:16:35,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647032119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:35,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:35,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:16:35,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278023135] [2023-08-30 01:16:35,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:35,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:16:35,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:35,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:16:35,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:16:36,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 277 [2023-08-30 01:16:36,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 118 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 01:16:36,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:36,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 277 [2023-08-30 01:16:36,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:36,271 INFO L130 PetriNetUnfolder]: 1272/2041 cut-off events. [2023-08-30 01:16:36,271 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:16:36,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3965 conditions, 2041 events. 1272/2041 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12895 event pairs, 1272 based on Foata normal form. 0/1490 useless extension candidates. Maximal degree in co-relation 3962. Up to 1881 conditions per place. [2023-08-30 01:16:36,285 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 36 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-08-30 01:16:36,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 188 flow [2023-08-30 01:16:36,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:16:36,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:16:36,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-08-30 01:16:36,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342960288808665 [2023-08-30 01:16:36,289 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-08-30 01:16:36,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-08-30 01:16:36,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:36,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-08-30 01:16:36,291 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 01:16:36,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:36,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:36,294 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 118 flow. Second operand 3 states and 444 transitions. [2023-08-30 01:16:36,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 188 flow [2023-08-30 01:16:36,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 01:16:36,296 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 116 flow [2023-08-30 01:16:36,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-08-30 01:16:36,297 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2023-08-30 01:16:36,297 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 116 flow [2023-08-30 01:16:36,298 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 01:16:36,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:36,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:16:36,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 01:16:36,298 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 01:16:36,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:36,299 INFO L85 PathProgramCache]: Analyzing trace with hash 561079, now seen corresponding path program 1 times [2023-08-30 01:16:36,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:36,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547882485] [2023-08-30 01:16:36,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:36,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:36,422 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 01:16:36,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:36,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547882485] [2023-08-30 01:16:36,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547882485] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:36,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:36,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:16:36,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722453380] [2023-08-30 01:16:36,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:36,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:16:36,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:36,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:16:36,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:16:36,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 277 [2023-08-30 01:16:36,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 116 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 01:16:36,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:36,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 277 [2023-08-30 01:16:36,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:36,682 INFO L130 PetriNetUnfolder]: 1216/1955 cut-off events. [2023-08-30 01:16:36,682 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:16:36,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3795 conditions, 1955 events. 1216/1955 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12338 event pairs, 1216 based on Foata normal form. 0/1436 useless extension candidates. Maximal degree in co-relation 3791. Up to 1795 conditions per place. [2023-08-30 01:16:36,698 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 34 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-08-30 01:16:36,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 182 flow [2023-08-30 01:16:36,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:16:36,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:16:36,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-30 01:16:36,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102286401925391 [2023-08-30 01:16:36,701 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-30 01:16:36,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-30 01:16:36,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:36,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-30 01:16:36,703 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 01:16:36,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:36,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:36,706 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 116 flow. Second operand 3 states and 424 transitions. [2023-08-30 01:16:36,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 182 flow [2023-08-30 01:16:36,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 51 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:16:36,710 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 113 flow [2023-08-30 01:16:36,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2023-08-30 01:16:36,711 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -11 predicate places. [2023-08-30 01:16:36,714 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 113 flow [2023-08-30 01:16:36,714 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 01:16:36,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:36,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 01:16:36,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 01:16:36,715 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 01:16:36,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:36,716 INFO L85 PathProgramCache]: Analyzing trace with hash 539212037, now seen corresponding path program 1 times [2023-08-30 01:16:36,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:36,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392880343] [2023-08-30 01:16:36,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:36,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:36,854 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 01:16:36,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:36,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392880343] [2023-08-30 01:16:36,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392880343] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:36,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:36,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:16:36,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955531783] [2023-08-30 01:16:36,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:36,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:16:36,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:36,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:16:36,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:16:36,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 277 [2023-08-30 01:16:36,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 113 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 01:16:36,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:36,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 277 [2023-08-30 01:16:36,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:37,119 INFO L130 PetriNetUnfolder]: 1192/1913 cut-off events. [2023-08-30 01:16:37,120 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:16:37,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3712 conditions, 1913 events. 1192/1913 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12008 event pairs, 1192 based on Foata normal form. 0/1419 useless extension candidates. Maximal degree in co-relation 3708. Up to 1753 conditions per place. [2023-08-30 01:16:37,132 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 32 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-08-30 01:16:37,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 175 flow [2023-08-30 01:16:37,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:16:37,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:16:37,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-30 01:16:37,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529482551143201 [2023-08-30 01:16:37,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-30 01:16:37,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-30 01:16:37,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:37,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-30 01:16:37,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:37,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:37,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:37,138 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 113 flow. Second operand 3 states and 440 transitions. [2023-08-30 01:16:37,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 175 flow [2023-08-30 01:16:37,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 49 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:16:37,140 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 110 flow [2023-08-30 01:16:37,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2023-08-30 01:16:37,141 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -12 predicate places. [2023-08-30 01:16:37,141 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 110 flow [2023-08-30 01:16:37,142 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 01:16:37,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:37,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 01:16:37,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 01:16:37,142 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 01:16:37,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:37,143 INFO L85 PathProgramCache]: Analyzing trace with hash 539212036, now seen corresponding path program 1 times [2023-08-30 01:16:37,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:37,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581362905] [2023-08-30 01:16:37,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:37,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:37,219 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 01:16:37,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:37,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581362905] [2023-08-30 01:16:37,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581362905] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:37,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:37,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:16:37,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080563700] [2023-08-30 01:16:37,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:37,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:16:37,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:37,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:16:37,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:16:37,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 277 [2023-08-30 01:16:37,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 110 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 01:16:37,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:37,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 277 [2023-08-30 01:16:37,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:37,475 INFO L130 PetriNetUnfolder]: 1168/1871 cut-off events. [2023-08-30 01:16:37,475 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:16:37,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3629 conditions, 1871 events. 1168/1871 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11768 event pairs, 1168 based on Foata normal form. 0/1402 useless extension candidates. Maximal degree in co-relation 3625. Up to 1711 conditions per place. [2023-08-30 01:16:37,487 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 30 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-08-30 01:16:37,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 47 transitions, 168 flow [2023-08-30 01:16:37,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:16:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:16:37,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-08-30 01:16:37,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054151624548736 [2023-08-30 01:16:37,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-08-30 01:16:37,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-08-30 01:16:37,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:37,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-08-30 01:16:37,493 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 01:16:37,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:37,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:37,495 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 110 flow. Second operand 3 states and 420 transitions. [2023-08-30 01:16:37,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 47 transitions, 168 flow [2023-08-30 01:16:37,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 47 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:16:37,499 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 107 flow [2023-08-30 01:16:37,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2023-08-30 01:16:37,501 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -13 predicate places. [2023-08-30 01:16:37,502 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 107 flow [2023-08-30 01:16:37,502 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 01:16:37,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:37,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:37,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 01:16:37,503 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 01:16:37,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:37,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1508263802, now seen corresponding path program 1 times [2023-08-30 01:16:37,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:37,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823073567] [2023-08-30 01:16:37,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:37,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:37,567 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 01:16:37,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:37,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823073567] [2023-08-30 01:16:37,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823073567] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:37,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:37,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:16:37,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104219641] [2023-08-30 01:16:37,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:37,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:16:37,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:37,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:16:37,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:16:37,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 277 [2023-08-30 01:16:37,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 107 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 01:16:37,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:37,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 277 [2023-08-30 01:16:37,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:37,829 INFO L130 PetriNetUnfolder]: 1112/1785 cut-off events. [2023-08-30 01:16:37,829 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:16:37,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3458 conditions, 1785 events. 1112/1785 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11061 event pairs, 1112 based on Foata normal form. 0/1364 useless extension candidates. Maximal degree in co-relation 3454. Up to 1625 conditions per place. [2023-08-30 01:16:37,840 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 28 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-08-30 01:16:37,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 161 flow [2023-08-30 01:16:37,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:16:37,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:16:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-08-30 01:16:37,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030084235860409 [2023-08-30 01:16:37,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-08-30 01:16:37,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-08-30 01:16:37,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:37,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-08-30 01:16:37,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:37,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:37,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:37,847 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 107 flow. Second operand 3 states and 418 transitions. [2023-08-30 01:16:37,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 161 flow [2023-08-30 01:16:37,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 45 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:16:37,849 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 104 flow [2023-08-30 01:16:37,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2023-08-30 01:16:37,850 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -14 predicate places. [2023-08-30 01:16:37,850 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 104 flow [2023-08-30 01:16:37,850 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 01:16:37,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:37,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:37,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 01:16:37,851 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 01:16:37,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:37,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1508263804, now seen corresponding path program 1 times [2023-08-30 01:16:37,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:37,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28617114] [2023-08-30 01:16:37,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:37,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:37,910 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 01:16:37,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:37,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28617114] [2023-08-30 01:16:37,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28617114] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:37,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:37,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:16:37,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640416784] [2023-08-30 01:16:37,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:37,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:16:37,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:37,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:16:37,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:16:37,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 277 [2023-08-30 01:16:37,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 104 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 01:16:37,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:37,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 277 [2023-08-30 01:16:37,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:38,112 INFO L130 PetriNetUnfolder]: 1056/1699 cut-off events. [2023-08-30 01:16:38,112 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:16:38,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3287 conditions, 1699 events. 1056/1699 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10453 event pairs, 1056 based on Foata normal form. 0/1326 useless extension candidates. Maximal degree in co-relation 3283. Up to 1539 conditions per place. [2023-08-30 01:16:38,121 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 26 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-30 01:16:38,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 43 transitions, 154 flow [2023-08-30 01:16:38,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:16:38,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:16:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2023-08-30 01:16:38,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222623345367028 [2023-08-30 01:16:38,124 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2023-08-30 01:16:38,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2023-08-30 01:16:38,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:38,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2023-08-30 01:16:38,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:38,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:38,127 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:38,127 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 104 flow. Second operand 3 states and 434 transitions. [2023-08-30 01:16:38,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 43 transitions, 154 flow [2023-08-30 01:16:38,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 43 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:16:38,129 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 101 flow [2023-08-30 01:16:38,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2023-08-30 01:16:38,130 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -15 predicate places. [2023-08-30 01:16:38,130 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 101 flow [2023-08-30 01:16:38,130 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 01:16:38,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:38,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:38,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 01:16:38,131 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 01:16:38,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:38,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2037522704, now seen corresponding path program 1 times [2023-08-30 01:16:38,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:38,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726290398] [2023-08-30 01:16:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:38,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:38,167 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 01:16:38,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:38,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726290398] [2023-08-30 01:16:38,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726290398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:38,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:38,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:16:38,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868316551] [2023-08-30 01:16:38,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:38,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:16:38,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:38,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:16:38,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:16:38,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 277 [2023-08-30 01:16:38,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 101 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 01:16:38,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:38,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 277 [2023-08-30 01:16:38,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:38,332 INFO L130 PetriNetUnfolder]: 840/1402 cut-off events. [2023-08-30 01:16:38,332 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:16:38,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 1402 events. 840/1402 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8549 event pairs, 840 based on Foata normal form. 0/1164 useless extension candidates. Maximal degree in co-relation 2690. Up to 1242 conditions per place. [2023-08-30 01:16:38,340 INFO L137 encePairwiseOnDemand]: 275/277 looper letters, 25 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 01:16:38,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 42 transitions, 151 flow [2023-08-30 01:16:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:16:38,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:16:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2023-08-30 01:16:38,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018050541516246 [2023-08-30 01:16:38,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2023-08-30 01:16:38,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2023-08-30 01:16:38,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:38,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2023-08-30 01:16:38,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:38,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:38,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:38,346 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 101 flow. Second operand 3 states and 417 transitions. [2023-08-30 01:16:38,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 42 transitions, 151 flow [2023-08-30 01:16:38,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 42 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:16:38,348 INFO L231 Difference]: Finished difference. Result has 56 places, 42 transitions, 100 flow [2023-08-30 01:16:38,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, 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=100, PETRI_PLACES=56, PETRI_TRANSITIONS=42} [2023-08-30 01:16:38,348 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -15 predicate places. [2023-08-30 01:16:38,349 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 42 transitions, 100 flow [2023-08-30 01:16:38,349 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 01:16:38,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:38,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:38,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 01:16:38,350 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 01:16:38,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:38,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2037522705, now seen corresponding path program 1 times [2023-08-30 01:16:38,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:38,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852185844] [2023-08-30 01:16:38,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:38,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:38,473 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 01:16:38,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:38,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852185844] [2023-08-30 01:16:38,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852185844] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:38,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:38,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 01:16:38,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607086269] [2023-08-30 01:16:38,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:38,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 01:16:38,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:38,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 01:16:38,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 01:16:38,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 277 [2023-08-30 01:16:38,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 42 transitions, 100 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 01:16:38,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:38,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 277 [2023-08-30 01:16:38,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:38,711 INFO L130 PetriNetUnfolder]: 624/1105 cut-off events. [2023-08-30 01:16:38,711 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:16:38,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2101 conditions, 1105 events. 624/1105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6650 event pairs, 624 based on Foata normal form. 0/1002 useless extension candidates. Maximal degree in co-relation 2097. Up to 945 conditions per place. [2023-08-30 01:16:38,717 INFO L137 encePairwiseOnDemand]: 275/277 looper letters, 24 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-30 01:16:38,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 41 transitions, 148 flow [2023-08-30 01:16:38,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:16:38,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:16:38,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2023-08-30 01:16:38,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4536702767749699 [2023-08-30 01:16:38,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2023-08-30 01:16:38,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2023-08-30 01:16:38,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:38,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2023-08-30 01:16:38,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:38,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:38,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:38,723 INFO L175 Difference]: Start difference. First operand has 56 places, 42 transitions, 100 flow. Second operand 3 states and 377 transitions. [2023-08-30 01:16:38,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 41 transitions, 148 flow [2023-08-30 01:16:38,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 41 transitions, 147 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:16:38,724 INFO L231 Difference]: Finished difference. Result has 56 places, 41 transitions, 99 flow [2023-08-30 01:16:38,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=56, PETRI_TRANSITIONS=41} [2023-08-30 01:16:38,725 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -15 predicate places. [2023-08-30 01:16:38,725 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 41 transitions, 99 flow [2023-08-30 01:16:38,726 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 01:16:38,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:38,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:38,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 01:16:38,727 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 01:16:38,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:38,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1771008404, now seen corresponding path program 1 times [2023-08-30 01:16:38,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:38,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054921725] [2023-08-30 01:16:38,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:38,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:39,082 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 01:16:39,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:39,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054921725] [2023-08-30 01:16:39,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054921725] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:39,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:39,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 01:16:39,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62395781] [2023-08-30 01:16:39,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:39,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:16:39,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:39,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:16:39,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:16:39,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 277 [2023-08-30 01:16:39,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 41 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:39,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:39,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 277 [2023-08-30 01:16:39,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:39,235 INFO L130 PetriNetUnfolder]: 665/1143 cut-off events. [2023-08-30 01:16:39,235 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 01:16:39,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2205 conditions, 1143 events. 665/1143 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6172 event pairs, 492 based on Foata normal form. 25/1154 useless extension candidates. Maximal degree in co-relation 2201. Up to 960 conditions per place. [2023-08-30 01:16:39,244 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-30 01:16:39,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 189 flow [2023-08-30 01:16:39,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:16:39,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:16:39,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-08-30 01:16:39,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5415162454873647 [2023-08-30 01:16:39,247 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-08-30 01:16:39,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-08-30 01:16:39,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:39,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-08-30 01:16:39,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:39,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:39,252 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:39,252 INFO L175 Difference]: Start difference. First operand has 56 places, 41 transitions, 99 flow. Second operand 3 states and 450 transitions. [2023-08-30 01:16:39,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 189 flow [2023-08-30 01:16:39,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 50 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:16:39,256 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 106 flow [2023-08-30 01:16:39,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-08-30 01:16:39,257 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -13 predicate places. [2023-08-30 01:16:39,257 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 106 flow [2023-08-30 01:16:39,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:39,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:39,258 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, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:39,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 01:16:39,258 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 01:16:39,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:39,259 INFO L85 PathProgramCache]: Analyzing trace with hash -603300392, now seen corresponding path program 2 times [2023-08-30 01:16:39,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:39,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115892559] [2023-08-30 01:16:39,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:39,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:39,567 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 01:16:39,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:39,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115892559] [2023-08-30 01:16:39,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115892559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:39,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:39,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 01:16:39,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130998914] [2023-08-30 01:16:39,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:39,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:16:39,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:39,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:16:39,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:16:39,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 277 [2023-08-30 01:16:39,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:39,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:39,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 277 [2023-08-30 01:16:39,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:39,716 INFO L130 PetriNetUnfolder]: 707/1243 cut-off events. [2023-08-30 01:16:39,716 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-08-30 01:16:39,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2464 conditions, 1243 events. 707/1243 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6895 event pairs, 176 based on Foata normal form. 14/1226 useless extension candidates. Maximal degree in co-relation 2459. Up to 936 conditions per place. [2023-08-30 01:16:39,723 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 35 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-30 01:16:39,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 52 transitions, 207 flow [2023-08-30 01:16:39,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:16:39,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:16:39,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-30 01:16:39,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439229843561973 [2023-08-30 01:16:39,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-30 01:16:39,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-30 01:16:39,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:39,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-30 01:16:39,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:39,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:39,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:39,729 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 106 flow. Second operand 3 states and 452 transitions. [2023-08-30 01:16:39,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 52 transitions, 207 flow [2023-08-30 01:16:39,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 203 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:16:39,730 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 110 flow [2023-08-30 01:16:39,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2023-08-30 01:16:39,731 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -12 predicate places. [2023-08-30 01:16:39,731 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 110 flow [2023-08-30 01:16:39,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:39,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:39,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:39,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 01:16:39,732 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 01:16:39,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:39,733 INFO L85 PathProgramCache]: Analyzing trace with hash -669590944, now seen corresponding path program 3 times [2023-08-30 01:16:39,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:39,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763391716] [2023-08-30 01:16:39,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:39,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:39,959 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 01:16:39,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:39,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763391716] [2023-08-30 01:16:39,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763391716] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:39,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:39,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 01:16:39,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764286252] [2023-08-30 01:16:39,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:39,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:16:39,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:39,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:16:39,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:16:39,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 277 [2023-08-30 01:16:39,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:39,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:39,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 277 [2023-08-30 01:16:39,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:40,086 INFO L130 PetriNetUnfolder]: 667/1137 cut-off events. [2023-08-30 01:16:40,086 INFO L131 PetriNetUnfolder]: For 139/142 co-relation queries the response was YES. [2023-08-30 01:16:40,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 1137 events. 667/1137 cut-off events. For 139/142 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6312 event pairs, 160 based on Foata normal form. 25/1125 useless extension candidates. Maximal degree in co-relation 2368. Up to 964 conditions per place. [2023-08-30 01:16:40,092 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 35 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-30 01:16:40,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 211 flow [2023-08-30 01:16:40,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:16:40,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:16:40,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-30 01:16:40,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439229843561973 [2023-08-30 01:16:40,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-30 01:16:40,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-30 01:16:40,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:40,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-30 01:16:40,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,099 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,099 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 110 flow. Second operand 3 states and 452 transitions. [2023-08-30 01:16:40,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 211 flow [2023-08-30 01:16:40,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 52 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:16:40,100 INFO L231 Difference]: Finished difference. Result has 60 places, 41 transitions, 114 flow [2023-08-30 01:16:40,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=60, PETRI_TRANSITIONS=41} [2023-08-30 01:16:40,101 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -11 predicate places. [2023-08-30 01:16:40,102 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 41 transitions, 114 flow [2023-08-30 01:16:40,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:40,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:40,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 01:16:40,103 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 01:16:40,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:40,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1233912070, now seen corresponding path program 4 times [2023-08-30 01:16:40,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:40,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767400990] [2023-08-30 01:16:40,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:40,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:40,289 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 01:16:40,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:40,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767400990] [2023-08-30 01:16:40,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767400990] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:40,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:40,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 01:16:40,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90134460] [2023-08-30 01:16:40,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:40,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:16:40,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:40,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:16:40,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:16:40,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 277 [2023-08-30 01:16:40,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 41 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:40,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 277 [2023-08-30 01:16:40,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:40,404 INFO L130 PetriNetUnfolder]: 581/1041 cut-off events. [2023-08-30 01:16:40,405 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2023-08-30 01:16:40,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2217 conditions, 1041 events. 581/1041 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5499 event pairs, 176 based on Foata normal form. 30/1027 useless extension candidates. Maximal degree in co-relation 2210. Up to 756 conditions per place. [2023-08-30 01:16:40,410 INFO L137 encePairwiseOnDemand]: 274/277 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-30 01:16:40,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 50 transitions, 208 flow [2023-08-30 01:16:40,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:16:40,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:16:40,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-08-30 01:16:40,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5415162454873647 [2023-08-30 01:16:40,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-08-30 01:16:40,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-08-30 01:16:40,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:40,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-08-30 01:16:40,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,416 INFO L175 Difference]: Start difference. First operand has 60 places, 41 transitions, 114 flow. Second operand 3 states and 450 transitions. [2023-08-30 01:16:40,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 50 transitions, 208 flow [2023-08-30 01:16:40,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 50 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:16:40,418 INFO L231 Difference]: Finished difference. Result has 61 places, 41 transitions, 118 flow [2023-08-30 01:16:40,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=61, PETRI_TRANSITIONS=41} [2023-08-30 01:16:40,419 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2023-08-30 01:16:40,419 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 41 transitions, 118 flow [2023-08-30 01:16:40,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:40,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:40,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 01:16:40,420 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 01:16:40,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:40,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1838582346, now seen corresponding path program 5 times [2023-08-30 01:16:40,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:40,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617849945] [2023-08-30 01:16:40,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:40,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:42,444 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 01:16:42,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:42,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617849945] [2023-08-30 01:16:42,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617849945] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:42,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:42,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 01:16:42,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831965582] [2023-08-30 01:16:42,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:42,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 01:16:42,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:42,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 01:16:42,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-30 01:16:42,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-08-30 01:16:42,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 41 transitions, 118 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:42,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:42,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-08-30 01:16:42,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:45,201 INFO L130 PetriNetUnfolder]: 6729/10127 cut-off events. [2023-08-30 01:16:45,202 INFO L131 PetriNetUnfolder]: For 2007/2007 co-relation queries the response was YES. [2023-08-30 01:16:45,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22355 conditions, 10127 events. 6729/10127 cut-off events. For 2007/2007 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 55117 event pairs, 1243 based on Foata normal form. 1/10128 useless extension candidates. Maximal degree in co-relation 22347. Up to 2692 conditions per place. [2023-08-30 01:16:45,261 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 200 selfloop transitions, 13 changer transitions 16/233 dead transitions. [2023-08-30 01:16:45,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 233 transitions, 1048 flow [2023-08-30 01:16:45,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 01:16:45,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 01:16:45,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1798 transitions. [2023-08-30 01:16:45,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46364105208870554 [2023-08-30 01:16:45,267 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1798 transitions. [2023-08-30 01:16:45,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1798 transitions. [2023-08-30 01:16:45,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:45,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1798 transitions. [2023-08-30 01:16:45,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.42857142857142) internal successors, (1798), 14 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,280 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,280 INFO L175 Difference]: Start difference. First operand has 61 places, 41 transitions, 118 flow. Second operand 14 states and 1798 transitions. [2023-08-30 01:16:45,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 233 transitions, 1048 flow [2023-08-30 01:16:45,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 233 transitions, 1044 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:16:45,287 INFO L231 Difference]: Finished difference. Result has 84 places, 53 transitions, 219 flow [2023-08-30 01:16:45,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=219, PETRI_PLACES=84, PETRI_TRANSITIONS=53} [2023-08-30 01:16:45,288 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 13 predicate places. [2023-08-30 01:16:45,288 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 53 transitions, 219 flow [2023-08-30 01:16:45,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:45,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:45,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 01:16:45,289 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 01:16:45,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:45,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1433664338, now seen corresponding path program 6 times [2023-08-30 01:16:45,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:45,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253668475] [2023-08-30 01:16:45,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:45,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:46,955 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 01:16:46,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:46,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253668475] [2023-08-30 01:16:46,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253668475] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:46,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:46,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 01:16:46,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342316267] [2023-08-30 01:16:46,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:46,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 01:16:46,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:46,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 01:16:46,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-08-30 01:16:47,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-08-30 01:16:47,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 53 transitions, 219 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:47,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:47,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-08-30 01:16:47,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:50,719 INFO L130 PetriNetUnfolder]: 14627/22410 cut-off events. [2023-08-30 01:16:50,719 INFO L131 PetriNetUnfolder]: For 22881/22881 co-relation queries the response was YES. [2023-08-30 01:16:50,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66886 conditions, 22410 events. 14627/22410 cut-off events. For 22881/22881 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 144815 event pairs, 2615 based on Foata normal form. 1/22411 useless extension candidates. Maximal degree in co-relation 66866. Up to 6868 conditions per place. [2023-08-30 01:16:50,950 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 253 selfloop transitions, 25 changer transitions 9/291 dead transitions. [2023-08-30 01:16:50,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 291 transitions, 1711 flow [2023-08-30 01:16:50,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 01:16:50,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 01:16:50,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1804 transitions. [2023-08-30 01:16:50,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46518824136152653 [2023-08-30 01:16:50,956 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1804 transitions. [2023-08-30 01:16:50,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1804 transitions. [2023-08-30 01:16:50,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:50,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1804 transitions. [2023-08-30 01:16:50,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.85714285714286) internal successors, (1804), 14 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:51,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:51,051 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:51,051 INFO L175 Difference]: Start difference. First operand has 84 places, 53 transitions, 219 flow. Second operand 14 states and 1804 transitions. [2023-08-30 01:16:51,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 291 transitions, 1711 flow [2023-08-30 01:16:51,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 291 transitions, 1667 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-08-30 01:16:51,470 INFO L231 Difference]: Finished difference. Result has 104 places, 73 transitions, 454 flow [2023-08-30 01:16:51,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=454, PETRI_PLACES=104, PETRI_TRANSITIONS=73} [2023-08-30 01:16:51,471 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 33 predicate places. [2023-08-30 01:16:51,471 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 73 transitions, 454 flow [2023-08-30 01:16:51,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:51,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:51,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:51,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 01:16:51,473 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 01:16:51,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:51,476 INFO L85 PathProgramCache]: Analyzing trace with hash 325330296, now seen corresponding path program 7 times [2023-08-30 01:16:51,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:51,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161506383] [2023-08-30 01:16:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:51,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:52,964 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 01:16:52,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:52,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161506383] [2023-08-30 01:16:52,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161506383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:52,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:52,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 01:16:52,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375376834] [2023-08-30 01:16:52,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:52,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 01:16:52,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:52,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 01:16:52,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-08-30 01:16:53,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-08-30 01:16:53,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 73 transitions, 454 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:53,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:53,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-08-30 01:16:53,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:58,613 INFO L130 PetriNetUnfolder]: 24683/38513 cut-off events. [2023-08-30 01:16:58,614 INFO L131 PetriNetUnfolder]: For 94709/94709 co-relation queries the response was YES. [2023-08-30 01:16:58,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139596 conditions, 38513 events. 24683/38513 cut-off events. For 94709/94709 co-relation queries the response was YES. Maximal size of possible extension queue 1317. Compared 280890 event pairs, 4855 based on Foata normal form. 1/38514 useless extension candidates. Maximal degree in co-relation 139566. Up to 13193 conditions per place. [2023-08-30 01:16:59,000 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 289 selfloop transitions, 41 changer transitions 9/343 dead transitions. [2023-08-30 01:16:59,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 343 transitions, 2546 flow [2023-08-30 01:16:59,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 01:16:59,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 01:16:59,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1807 transitions. [2023-08-30 01:16:59,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46596183599793706 [2023-08-30 01:16:59,006 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1807 transitions. [2023-08-30 01:16:59,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1807 transitions. [2023-08-30 01:16:59,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:59,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1807 transitions. [2023-08-30 01:16:59,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 129.07142857142858) internal successors, (1807), 14 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:59,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:59,029 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:59,030 INFO L175 Difference]: Start difference. First operand has 104 places, 73 transitions, 454 flow. Second operand 14 states and 1807 transitions. [2023-08-30 01:16:59,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 343 transitions, 2546 flow [2023-08-30 01:16:59,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 343 transitions, 2500 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-08-30 01:16:59,827 INFO L231 Difference]: Finished difference. Result has 126 places, 106 transitions, 942 flow [2023-08-30 01:16:59,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=942, PETRI_PLACES=126, PETRI_TRANSITIONS=106} [2023-08-30 01:16:59,828 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 55 predicate places. [2023-08-30 01:16:59,828 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 106 transitions, 942 flow [2023-08-30 01:16:59,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:59,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:59,830 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, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:59,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 01:16:59,830 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 01:16:59,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:59,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1956000212, now seen corresponding path program 8 times [2023-08-30 01:16:59,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:59,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322794818] [2023-08-30 01:16:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:59,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:17:01,314 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 01:17:01,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:17:01,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322794818] [2023-08-30 01:17:01,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322794818] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:17:01,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:17:01,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 01:17:01,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023391824] [2023-08-30 01:17:01,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:17:01,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 01:17:01,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:17:01,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 01:17:01,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-08-30 01:17:01,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-08-30 01:17:01,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 106 transitions, 942 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:01,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:17:01,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-08-30 01:17:01,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:17:08,345 INFO L130 PetriNetUnfolder]: 31847/50874 cut-off events. [2023-08-30 01:17:08,346 INFO L131 PetriNetUnfolder]: For 232988/232988 co-relation queries the response was YES. [2023-08-30 01:17:08,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215648 conditions, 50874 events. 31847/50874 cut-off events. For 232988/232988 co-relation queries the response was YES. Maximal size of possible extension queue 1768. Compared 399798 event pairs, 7945 based on Foata normal form. 1/50875 useless extension candidates. Maximal degree in co-relation 215607. Up to 13538 conditions per place. [2023-08-30 01:17:09,152 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 306 selfloop transitions, 68 changer transitions 10/388 dead transitions. [2023-08-30 01:17:09,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 388 transitions, 3560 flow [2023-08-30 01:17:09,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 01:17:09,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 01:17:09,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1801 transitions. [2023-08-30 01:17:09,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46441464672511606 [2023-08-30 01:17:09,159 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1801 transitions. [2023-08-30 01:17:09,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1801 transitions. [2023-08-30 01:17:09,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:17:09,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1801 transitions. [2023-08-30 01:17:09,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.64285714285714) internal successors, (1801), 14 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:09,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:09,169 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:09,169 INFO L175 Difference]: Start difference. First operand has 126 places, 106 transitions, 942 flow. Second operand 14 states and 1801 transitions. [2023-08-30 01:17:09,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 388 transitions, 3560 flow [2023-08-30 01:17:10,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 388 transitions, 3522 flow, removed 19 selfloop flow, removed 1 redundant places. [2023-08-30 01:17:10,729 INFO L231 Difference]: Finished difference. Result has 149 places, 145 transitions, 1694 flow [2023-08-30 01:17:10,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1694, PETRI_PLACES=149, PETRI_TRANSITIONS=145} [2023-08-30 01:17:10,730 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 78 predicate places. [2023-08-30 01:17:10,730 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 145 transitions, 1694 flow [2023-08-30 01:17:10,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:10,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:17:10,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:17:10,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 01:17:10,731 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 01:17:10,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:17:10,732 INFO L85 PathProgramCache]: Analyzing trace with hash -13354356, now seen corresponding path program 9 times [2023-08-30 01:17:10,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:17:10,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401781969] [2023-08-30 01:17:10,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:17:10,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:17:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:17:12,239 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 01:17:12,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:17:12,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401781969] [2023-08-30 01:17:12,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401781969] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:17:12,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:17:12,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 01:17:12,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055058066] [2023-08-30 01:17:12,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:17:12,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 01:17:12,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:17:12,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 01:17:12,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-08-30 01:17:12,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-08-30 01:17:12,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 145 transitions, 1694 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:12,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:17:12,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-08-30 01:17:12,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:17:24,948 INFO L130 PetriNetUnfolder]: 52893/87422 cut-off events. [2023-08-30 01:17:24,949 INFO L131 PetriNetUnfolder]: For 728583/728583 co-relation queries the response was YES. [2023-08-30 01:17:25,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434294 conditions, 87422 events. 52893/87422 cut-off events. For 728583/728583 co-relation queries the response was YES. Maximal size of possible extension queue 3338. Compared 785999 event pairs, 13387 based on Foata normal form. 1/87415 useless extension candidates. Maximal degree in co-relation 434241. Up to 25410 conditions per place. [2023-08-30 01:17:25,997 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 460 selfloop transitions, 69 changer transitions 9/542 dead transitions. [2023-08-30 01:17:25,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 542 transitions, 6910 flow [2023-08-30 01:17:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 01:17:25,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 01:17:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1800 transitions. [2023-08-30 01:17:26,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46415678184631254 [2023-08-30 01:17:26,004 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1800 transitions. [2023-08-30 01:17:26,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1800 transitions. [2023-08-30 01:17:26,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:17:26,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1800 transitions. [2023-08-30 01:17:26,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.57142857142858) internal successors, (1800), 14 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:26,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:26,015 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:26,015 INFO L175 Difference]: Start difference. First operand has 149 places, 145 transitions, 1694 flow. Second operand 14 states and 1800 transitions. [2023-08-30 01:17:26,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 542 transitions, 6910 flow [2023-08-30 01:17:35,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 542 transitions, 6785 flow, removed 56 selfloop flow, removed 2 redundant places. [2023-08-30 01:17:35,024 INFO L231 Difference]: Finished difference. Result has 171 places, 203 transitions, 2861 flow [2023-08-30 01:17:35,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2861, PETRI_PLACES=171, PETRI_TRANSITIONS=203} [2023-08-30 01:17:35,025 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 100 predicate places. [2023-08-30 01:17:35,025 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 203 transitions, 2861 flow [2023-08-30 01:17:35,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:35,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:17:35,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:17:35,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 01:17:35,026 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 01:17:35,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:17:35,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1553534764, now seen corresponding path program 10 times [2023-08-30 01:17:35,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:17:35,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377808320] [2023-08-30 01:17:35,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:17:35,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:17:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:17:36,221 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 01:17:36,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:17:36,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377808320] [2023-08-30 01:17:36,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377808320] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:17:36,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:17:36,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 01:17:36,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030958797] [2023-08-30 01:17:36,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:17:36,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 01:17:36,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:17:36,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 01:17:36,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-08-30 01:17:36,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-08-30 01:17:36,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 203 transitions, 2861 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:36,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:17:36,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-08-30 01:17:36,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:17:54,231 INFO L130 PetriNetUnfolder]: 62075/105030 cut-off events. [2023-08-30 01:17:54,231 INFO L131 PetriNetUnfolder]: For 1167094/1167094 co-relation queries the response was YES. [2023-08-30 01:17:55,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570402 conditions, 105030 events. 62075/105030 cut-off events. For 1167094/1167094 co-relation queries the response was YES. Maximal size of possible extension queue 4199. Compared 998272 event pairs, 19575 based on Foata normal form. 1/105031 useless extension candidates. Maximal degree in co-relation 570338. Up to 42455 conditions per place. [2023-08-30 01:17:55,572 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 431 selfloop transitions, 88 changer transitions 9/532 dead transitions. [2023-08-30 01:17:55,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 532 transitions, 7224 flow [2023-08-30 01:17:55,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 01:17:55,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 01:17:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1793 transitions. [2023-08-30 01:17:55,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46235172769468796 [2023-08-30 01:17:55,577 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1793 transitions. [2023-08-30 01:17:55,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1793 transitions. [2023-08-30 01:17:55,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:17:55,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1793 transitions. [2023-08-30 01:17:55,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.07142857142858) internal successors, (1793), 14 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:55,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:55,587 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:55,587 INFO L175 Difference]: Start difference. First operand has 171 places, 203 transitions, 2861 flow. Second operand 14 states and 1793 transitions. [2023-08-30 01:17:55,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 532 transitions, 7224 flow [2023-08-30 01:18:10,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 532 transitions, 7029 flow, removed 89 selfloop flow, removed 2 redundant places. [2023-08-30 01:18:10,590 INFO L231 Difference]: Finished difference. Result has 192 places, 257 transitions, 4007 flow [2023-08-30 01:18:10,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4007, PETRI_PLACES=192, PETRI_TRANSITIONS=257} [2023-08-30 01:18:10,591 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 121 predicate places. [2023-08-30 01:18:10,591 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 257 transitions, 4007 flow [2023-08-30 01:18:10,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:18:10,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:18:10,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:18:10,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 01:18:10,592 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 01:18:10,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:18:10,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1863950844, now seen corresponding path program 11 times [2023-08-30 01:18:10,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:18:10,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693624776] [2023-08-30 01:18:10,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:18:10,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:18:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:18:12,175 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 01:18:12,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:18:12,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693624776] [2023-08-30 01:18:12,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693624776] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:18:12,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:18:12,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 01:18:12,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960023041] [2023-08-30 01:18:12,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:18:12,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 01:18:12,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:18:12,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 01:18:12,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-08-30 01:18:12,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-08-30 01:18:12,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 257 transitions, 4007 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:18:12,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:18:12,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-08-30 01:18:12,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:18:34,546 INFO L130 PetriNetUnfolder]: 71148/124513 cut-off events. [2023-08-30 01:18:34,547 INFO L131 PetriNetUnfolder]: For 1797447/1797447 co-relation queries the response was YES. [2023-08-30 01:18:35,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728579 conditions, 124513 events. 71148/124513 cut-off events. For 1797447/1797447 co-relation queries the response was YES. Maximal size of possible extension queue 5123. Compared 1267981 event pairs, 18333 based on Foata normal form. 1/124514 useless extension candidates. Maximal degree in co-relation 728505. Up to 34150 conditions per place. [2023-08-30 01:18:36,375 INFO L137 encePairwiseOnDemand]: 264/277 looper letters, 623 selfloop transitions, 106 changer transitions 11/744 dead transitions. [2023-08-30 01:18:36,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 744 transitions, 11985 flow [2023-08-30 01:18:36,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 01:18:36,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 01:18:36,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1803 transitions. [2023-08-30 01:18:36,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46493037648272306 [2023-08-30 01:18:36,379 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1803 transitions. [2023-08-30 01:18:36,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1803 transitions. [2023-08-30 01:18:36,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:18:36,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1803 transitions. [2023-08-30 01:18:36,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.78571428571428) internal successors, (1803), 14 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:18:36,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:18:36,389 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 277.0) internal successors, (4155), 15 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:18:36,390 INFO L175 Difference]: Start difference. First operand has 192 places, 257 transitions, 4007 flow. Second operand 14 states and 1803 transitions. [2023-08-30 01:18:36,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 744 transitions, 11985 flow [2023-08-30 01:19:14,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 744 transitions, 11550 flow, removed 205 selfloop flow, removed 2 redundant places. [2023-08-30 01:19:14,387 INFO L231 Difference]: Finished difference. Result has 214 places, 330 transitions, 5537 flow [2023-08-30 01:19:14,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5537, PETRI_PLACES=214, PETRI_TRANSITIONS=330} [2023-08-30 01:19:14,388 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 143 predicate places. [2023-08-30 01:19:14,388 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 330 transitions, 5537 flow [2023-08-30 01:19:14,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:19:14,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:19:14,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:19:14,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 01:19:14,389 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 01:19:14,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:19:14,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1273965686, now seen corresponding path program 12 times [2023-08-30 01:19:14,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:19:14,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659026288] [2023-08-30 01:19:14,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:19:14,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:19:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:19:15,627 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 01:19:15,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:19:15,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659026288] [2023-08-30 01:19:15,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659026288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:19:15,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:19:15,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 01:19:15,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059076014] [2023-08-30 01:19:15,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:19:15,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 01:19:15,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:19:15,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 01:19:15,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-08-30 01:19:15,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 277 [2023-08-30 01:19:15,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 330 transitions, 5537 flow. Second operand has 14 states, 14 states have (on average 114.64285714285714) internal successors, (1605), 14 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:19:15,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:19:15,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 277 [2023-08-30 01:19:15,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand